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1ce9c476f73f30b55dd08e962506f51dc06ddac8
lawnchair/src/com/android/launcher3/Workspace.java
Sunny Goyal 1ce9c476f7 Removing some methods from the DragSource 
This makes is easier to create new DragSource and sets up
proper default values in DragOptions

Change-Id: I6cb0b1df41b9730cf29f785fe85fe7f0b573ee3a
2017-10-03 16:18:46 -07:00

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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.launcher3;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.LayoutTransition;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.animation.ValueAnimator;
import android.animation.ValueAnimator.AnimatorUpdateListener;
import android.annotation.SuppressLint;
import android.app.WallpaperManager;
import android.appwidget.AppWidgetHostView;
import android.appwidget.AppWidgetProviderInfo;
import android.content.Context;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.os.IBinder;
import android.os.Parcelable;
import android.os.UserHandle;
import android.util.AttributeSet;
import android.util.Log;
import android.util.Property;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewDebug;
import android.view.ViewGroup;
import android.view.accessibility.AccessibilityManager;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.Interpolator;
import android.widget.Toast;
import com.android.launcher3.Launcher.LauncherOverlay;
import com.android.launcher3.LauncherAppWidgetHost.ProviderChangedListener;
import com.android.launcher3.UninstallDropTarget.DropTargetSource;
import com.android.launcher3.accessibility.AccessibleDragListenerAdapter;
import com.android.launcher3.accessibility.OverviewAccessibilityDelegate;
import com.android.launcher3.accessibility.OverviewScreenAccessibilityDelegate;
import com.android.launcher3.accessibility.WorkspaceAccessibilityHelper;
import com.android.launcher3.anim.AnimationLayerSet;
import com.android.launcher3.badge.FolderBadgeInfo;
import com.android.launcher3.compat.AppWidgetManagerCompat;
import com.android.launcher3.config.FeatureFlags;
import com.android.launcher3.dragndrop.DragController;
import com.android.launcher3.dragndrop.DragLayer;
import com.android.launcher3.dragndrop.DragOptions;
import com.android.launcher3.dragndrop.DragView;
import com.android.launcher3.dragndrop.SpringLoadedDragController;
import com.android.launcher3.folder.Folder;
import com.android.launcher3.folder.FolderIcon;
import com.android.launcher3.folder.PreviewBackground;
import com.android.launcher3.graphics.DragPreviewProvider;
import com.android.launcher3.graphics.PreloadIconDrawable;
import com.android.launcher3.popup.PopupContainerWithArrow;
import com.android.launcher3.shortcuts.ShortcutDragPreviewProvider;
import com.android.launcher3.userevent.nano.LauncherLogProto.Action;
import com.android.launcher3.userevent.nano.LauncherLogProto.ContainerType;
import com.android.launcher3.userevent.nano.LauncherLogProto.Target;
import com.android.launcher3.util.ItemInfoMatcher;
import com.android.launcher3.util.LongArrayMap;
import com.android.launcher3.util.PackageUserKey;
import com.android.launcher3.util.Thunk;
import com.android.launcher3.util.WallpaperOffsetInterpolator;
import com.android.launcher3.widget.PendingAddShortcutInfo;
import com.android.launcher3.widget.PendingAddWidgetInfo;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;
/**
* The workspace is a wide area with a wallpaper and a finite number of pages.
* Each page contains a number of icons, folders or widgets the user can
* interact with. A workspace is meant to be used with a fixed width only.
*/
public class Workspace extends PagedView
implements DropTarget, DragSource, View.OnTouchListener,
DragController.DragListener, ViewGroup.OnHierarchyChangeListener,
Insettable, DropTargetSource {
private static final String TAG = "Launcher.Workspace";
/** The value that {@link #mTransitionProgress} must be greater than for
* {@link #transitionStateShouldAllowDrop()} to return true. */
private static final float ALLOW_DROP_TRANSITION_PROGRESS = 0.25f;
/** The value that {@link #mTransitionProgress} must be greater than for
* {@link #isFinishedSwitchingState()} ()} to return true. */
private static final float FINISHED_SWITCHING_STATE_TRANSITION_PROGRESS = 0.5f;
private static final boolean ENFORCE_DRAG_EVENT_ORDER = false;
private static final int SNAP_OFF_EMPTY_SCREEN_DURATION = 400;
private static final int FADE_EMPTY_SCREEN_DURATION = 150;
private static final int ADJACENT_SCREEN_DROP_DURATION = 300;
private static final int DEFAULT_PAGE = 0;
private static final boolean MAP_NO_RECURSE = false;
private static final boolean MAP_RECURSE = true;
// The screen id used for the empty screen always present to the right.
public static final long EXTRA_EMPTY_SCREEN_ID = -201;
// The is the first screen. It is always present, even if its empty.
public static final long FIRST_SCREEN_ID = 0;
private LayoutTransition mLayoutTransition;
@Thunk final WallpaperManager mWallpaperManager;
private ShortcutAndWidgetContainer mDragSourceInternal;
@Thunk final LongArrayMap<CellLayout> mWorkspaceScreens = new LongArrayMap<>();
@Thunk final ArrayList<Long> mScreenOrder = new ArrayList<>();
@Thunk Runnable mRemoveEmptyScreenRunnable;
@Thunk boolean mDeferRemoveExtraEmptyScreen = false;
/**
* CellInfo for the cell that is currently being dragged
*/
private CellLayout.CellInfo mDragInfo;
/**
* Target drop area calculated during last acceptDrop call.
*/
@Thunk int[] mTargetCell = new int[2];
private int mDragOverX = -1;
private int mDragOverY = -1;
/**
* The CellLayout that is currently being dragged over
*/
@Thunk CellLayout mDragTargetLayout = null;
/**
* The CellLayout that we will show as highlighted
*/
private CellLayout mDragOverlappingLayout = null;
/**
* The CellLayout which will be dropped to
*/
private CellLayout mDropToLayout = null;
@Thunk final Launcher mLauncher;
@Thunk DragController mDragController;
// These are temporary variables to prevent having to allocate a new object just to
// return an (x, y) value from helper functions. Do NOT use them to maintain other state.
private static final Rect sTempRect = new Rect();
private final int[] mTempXY = new int[2];
@Thunk float[] mDragViewVisualCenter = new float[2];
private final float[] mTempTouchCoordinates = new float[2];
private SpringLoadedDragController mSpringLoadedDragController;
private final float mOverviewModeShrinkFactor;
// State variable that indicates whether the pages are small (ie when you're
// in all apps or customize mode)
public enum State {
NORMAL (false, false, ContainerType.WORKSPACE),
NORMAL_HIDDEN (false, false, ContainerType.ALLAPPS),
SPRING_LOADED (false, true, ContainerType.WORKSPACE),
OVERVIEW (true, true, ContainerType.OVERVIEW),
OVERVIEW_HIDDEN (true, false, ContainerType.WIDGETS);
public final boolean shouldUpdateWidget;
public final boolean hasMultipleVisiblePages;
public final int containerType;
State(boolean shouldUpdateWidget, boolean hasMultipleVisiblePages, int containerType) {
this.shouldUpdateWidget = shouldUpdateWidget;
this.hasMultipleVisiblePages = hasMultipleVisiblePages;
this.containerType = containerType;
}
}
// Direction used for moving the workspace and hotseat UI
public enum Direction {
X (TRANSLATION_X),
Y (TRANSLATION_Y);
private final Property<View, Float> viewProperty;
Direction(Property<View, Float> viewProperty) {
this.viewProperty = viewProperty;
}
}
private static final int HOTSEAT_STATE_ALPHA_INDEX = 2;
/**
* These values correspond to {@link Direction#X} & {@link Direction#Y}
*/
private final float[] mPageAlpha = new float[] {1, 1};
/**
* Hotseat alpha can be changed when moving horizontally, vertically, changing states.
* The values correspond to {@link Direction#X}, {@link Direction#Y} &
* {@link #HOTSEAT_STATE_ALPHA_INDEX} respectively.
*/
private final float[] mHotseatAlpha = new float[] {1, 1, 1};
@ViewDebug.ExportedProperty(category = "launcher")
private State mState = State.NORMAL;
private boolean mIsSwitchingState = false;
boolean mAnimatingViewIntoPlace = false;
boolean mChildrenLayersEnabled = true;
private boolean mStripScreensOnPageStopMoving = false;
private DragPreviewProvider mOutlineProvider = null;
private final boolean mWorkspaceFadeInAdjacentScreens;
final WallpaperOffsetInterpolator mWallpaperOffset;
private boolean mUnlockWallpaperFromDefaultPageOnLayout;
@Thunk Runnable mDelayedResizeRunnable;
// Variables relating to the creation of user folders by hovering shortcuts over shortcuts
private static final int FOLDER_CREATION_TIMEOUT = 0;
public static final int REORDER_TIMEOUT = 350;
private final Alarm mFolderCreationAlarm = new Alarm();
private final Alarm mReorderAlarm = new Alarm();
private PreviewBackground mFolderCreateBg;
private FolderIcon mDragOverFolderIcon = null;
private boolean mCreateUserFolderOnDrop = false;
private boolean mAddToExistingFolderOnDrop = false;
private float mMaxDistanceForFolderCreation;
// Variables relating to touch disambiguation (scrolling workspace vs. scrolling a widget)
private float mXDown;
private float mYDown;
final static float START_DAMPING_TOUCH_SLOP_ANGLE = (float) Math.PI / 6;
final static float MAX_SWIPE_ANGLE = (float) Math.PI / 3;
final static float TOUCH_SLOP_DAMPING_FACTOR = 4;
// Relating to the animation of items being dropped externally
public static final int ANIMATE_INTO_POSITION_AND_DISAPPEAR = 0;
public static final int ANIMATE_INTO_POSITION_AND_REMAIN = 1;
public static final int ANIMATE_INTO_POSITION_AND_RESIZE = 2;
public static final int COMPLETE_TWO_STAGE_WIDGET_DROP_ANIMATION = 3;
public static final int CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION = 4;
// Related to dragging, folder creation and reordering
private static final int DRAG_MODE_NONE = 0;
private static final int DRAG_MODE_CREATE_FOLDER = 1;
private static final int DRAG_MODE_ADD_TO_FOLDER = 2;
private static final int DRAG_MODE_REORDER = 3;
private int mDragMode = DRAG_MODE_NONE;
@Thunk int mLastReorderX = -1;
@Thunk int mLastReorderY = -1;
private SparseArray<Parcelable> mSavedStates;
private final ArrayList<Integer> mRestoredPages = new ArrayList<>();
private float mCurrentScale;
private float mTransitionProgress;
@Thunk Runnable mDeferredAction;
private boolean mDeferDropAfterUninstall;
private boolean mUninstallSuccessful;
// State related to Launcher Overlay
LauncherOverlay mLauncherOverlay;
boolean mScrollInteractionBegan;
boolean mStartedSendingScrollEvents;
float mLastOverlayScroll = 0;
boolean mOverlayShown = false;
private boolean mForceDrawAdjacentPages = false;
// Total over scrollX in the overlay direction.
private float mOverlayTranslation;
// Handles workspace state transitions
private final WorkspaceStateTransitionAnimation mStateTransitionAnimation;
private AccessibilityDelegate mPagesAccessibilityDelegate;
/**
* Used to inflate the Workspace from XML.
*
* @param context The application's context.
* @param attrs The attributes set containing the Workspace's customization values.
*/
public Workspace(Context context, AttributeSet attrs) {
this(context, attrs, 0);
}
/**
* Used to inflate the Workspace from XML.
*
* @param context The application's context.
* @param attrs The attributes set containing the Workspace's customization values.
* @param defStyle Unused.
*/
public Workspace(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mLauncher = Launcher.getLauncher(context);
mStateTransitionAnimation = new WorkspaceStateTransitionAnimation(mLauncher, this);
final Resources res = getResources();
DeviceProfile grid = mLauncher.getDeviceProfile();
mWorkspaceFadeInAdjacentScreens = grid.shouldFadeAdjacentWorkspaceScreens();
mWallpaperManager = WallpaperManager.getInstance(context);
mWallpaperOffset = new WallpaperOffsetInterpolator(this);
mOverviewModeShrinkFactor =
res.getInteger(R.integer.config_workspaceOverviewShrinkPercentage) / 100f;
setOnHierarchyChangeListener(this);
setHapticFeedbackEnabled(false);
initWorkspace();
// Disable multitouch across the workspace/all apps/customize tray
setMotionEventSplittingEnabled(true);
}
@Override
public void setInsets(Rect insets) {
mInsets.set(insets);
}
/**
* Estimates the size of an item using spans: hSpan, vSpan.
*
* @return MAX_VALUE for each dimension if unsuccessful.
*/
public int[] estimateItemSize(ItemInfo itemInfo) {
int[] size = new int[2];
if (getChildCount() > 0) {
// Use the first page to estimate the child position
CellLayout cl = (CellLayout) getChildAt(0);
boolean isWidget = itemInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET;
Rect r = estimateItemPosition(cl, 0, 0, itemInfo.spanX, itemInfo.spanY);
float scale = 1;
if (isWidget) {
DeviceProfile profile = mLauncher.getDeviceProfile();
scale = Utilities.shrinkRect(r, profile.appWidgetScale.x, profile.appWidgetScale.y);
}
size[0] = r.width();
size[1] = r.height();
if (isWidget) {
size[0] /= scale;
size[1] /= scale;
}
return size;
} else {
size[0] = Integer.MAX_VALUE;
size[1] = Integer.MAX_VALUE;
return size;
}
}
public Rect estimateItemPosition(CellLayout cl, int hCell, int vCell, int hSpan, int vSpan) {
Rect r = new Rect();
cl.cellToRect(hCell, vCell, hSpan, vSpan, r);
return r;
}
@Override
public void onDragStart(DropTarget.DragObject dragObject, DragOptions options) {
if (ENFORCE_DRAG_EVENT_ORDER) {
enforceDragParity("onDragStart", 0, 0);
}
if (mDragInfo != null && mDragInfo.cell != null) {
CellLayout layout = (CellLayout) mDragInfo.cell.getParent().getParent();
layout.markCellsAsUnoccupiedForView(mDragInfo.cell);
}
if (mOutlineProvider != null) {
if (dragObject.dragView != null) {
Bitmap preview = dragObject.dragView.getPreviewBitmap();
// The outline is used to visualize where the item will land if dropped
mOutlineProvider.generateDragOutline(preview);
}
}
updateChildrenLayersEnabled(false);
mLauncher.lockScreenOrientation();
mLauncher.onInteractionBegin();
// Prevent any Un/InstallShortcutReceivers from updating the db while we are dragging
InstallShortcutReceiver.enableInstallQueue(InstallShortcutReceiver.FLAG_DRAG_AND_DROP);
// Do not add a new page if it is a accessible drag which was not started by the workspace.
// We do not support accessibility drag from other sources and instead provide a direct
// action for move/add to homescreen.
// When a accessible drag is started by the folder, we only allow rearranging withing the
// folder.
boolean addNewPage = !(options.isAccessibleDrag && dragObject.dragSource != this);
if (addNewPage) {
mDeferRemoveExtraEmptyScreen = false;
addExtraEmptyScreenOnDrag();
if (dragObject.dragInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET
&& dragObject.dragSource != this) {
// When dragging a widget from different source, move to a page which has
// enough space to place this widget (after rearranging/resizing). We special case
// widgets as they cannot be placed inside a folder.
// Start at the current page and search right (on LTR) until finding a page with
// enough space. Since an empty screen is the furthest right, a page must be found.
int currentPage = getPageNearestToCenterOfScreen();
for (int pageIndex = currentPage; pageIndex < getPageCount(); pageIndex++) {
CellLayout page = (CellLayout) getPageAt(pageIndex);
if (page.hasReorderSolution(dragObject.dragInfo)) {
setCurrentPage(pageIndex);
break;
}
}
}
}
// Always enter the spring loaded mode
mLauncher.enterSpringLoadedDragMode();
}
public void deferRemoveExtraEmptyScreen() {
mDeferRemoveExtraEmptyScreen = true;
}
@Override
public void onDragEnd() {
if (ENFORCE_DRAG_EVENT_ORDER) {
enforceDragParity("onDragEnd", 0, 0);
}
if (!mDeferRemoveExtraEmptyScreen) {
removeExtraEmptyScreen(true, mDragSourceInternal != null);
}
updateChildrenLayersEnabled(false);
mLauncher.unlockScreenOrientation(false);
// Re-enable any Un/InstallShortcutReceiver and now process any queued items
InstallShortcutReceiver.disableAndFlushInstallQueue(
InstallShortcutReceiver.FLAG_DRAG_AND_DROP, getContext());
mOutlineProvider = null;
mDragInfo = null;
mDragSourceInternal = null;
mLauncher.onInteractionEnd();
}
/**
* Initializes various states for this workspace.
*/
protected void initWorkspace() {
mCurrentPage = DEFAULT_PAGE;
DeviceProfile grid = mLauncher.getDeviceProfile();
setWillNotDraw(false);
setClipChildren(false);
setClipToPadding(false);
setMinScale(mOverviewModeShrinkFactor);
setupLayoutTransition();
mMaxDistanceForFolderCreation = (0.55f * grid.iconSizePx);
// Set the wallpaper dimensions when Launcher starts up
setWallpaperDimension();
}
@Override
public void initParentViews(View parent) {
super.initParentViews(parent);
mPageIndicator.setAccessibilityDelegate(new OverviewAccessibilityDelegate());
}
private void setupLayoutTransition() {
// We want to show layout transitions when pages are deleted, to close the gap.
mLayoutTransition = new LayoutTransition();
mLayoutTransition.enableTransitionType(LayoutTransition.DISAPPEARING);
mLayoutTransition.enableTransitionType(LayoutTransition.CHANGE_DISAPPEARING);
mLayoutTransition.disableTransitionType(LayoutTransition.APPEARING);
mLayoutTransition.disableTransitionType(LayoutTransition.CHANGE_APPEARING);
setLayoutTransition(mLayoutTransition);
}
void enableLayoutTransitions() {
setLayoutTransition(mLayoutTransition);
}
void disableLayoutTransitions() {
setLayoutTransition(null);
}
@Override
public void onChildViewAdded(View parent, View child) {
if (!(child instanceof CellLayout)) {
throw new IllegalArgumentException("A Workspace can only have CellLayout children.");
}
CellLayout cl = ((CellLayout) child);
cl.setOnInterceptTouchListener(this);
cl.setClickable(true);
cl.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
super.onChildViewAdded(parent, child);
}
boolean isTouchActive() {
return mTouchState != TOUCH_STATE_REST;
}
/**
* Initializes and binds the first page
* @param qsb an existing qsb to recycle or null.
*/
public void bindAndInitFirstWorkspaceScreen(View qsb) {
if (!FeatureFlags.QSB_ON_FIRST_SCREEN) {
return;
}
// Add the first page
CellLayout firstPage = insertNewWorkspaceScreen(Workspace.FIRST_SCREEN_ID, 0);
// Always add a QSB on the first screen.
if (qsb == null) {
// In transposed layout, we add the QSB in the Grid. As workspace does not touch the
// edges, we do not need a full width QSB.
qsb = LayoutInflater.from(getContext())
.inflate(R.layout.search_container_workspace,firstPage, false);
}
CellLayout.LayoutParams lp = new CellLayout.LayoutParams(0, 0, firstPage.getCountX(), 1);
lp.canReorder = false;
if (!firstPage.addViewToCellLayout(qsb, 0, R.id.search_container_workspace, lp, true)) {
Log.e(TAG, "Failed to add to item at (0, 0) to CellLayout");
}
}
public void removeAllWorkspaceScreens() {
// Disable all layout transitions before removing all pages to ensure that we don't get the
// transition animations competing with us changing the scroll when we add pages
disableLayoutTransitions();
// Recycle the QSB widget
View qsb = findViewById(R.id.search_container_workspace);
if (qsb != null) {
((ViewGroup) qsb.getParent()).removeView(qsb);
}
// Remove the pages and clear the screen models
removeAllViews();
mScreenOrder.clear();
mWorkspaceScreens.clear();
// Ensure that the first page is always present
bindAndInitFirstWorkspaceScreen(qsb);
// Re-enable the layout transitions
enableLayoutTransitions();
}
public void insertNewWorkspaceScreenBeforeEmptyScreen(long screenId) {
// Find the index to insert this view into. If the empty screen exists, then
// insert it before that.
int insertIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID);
if (insertIndex < 0) {
insertIndex = mScreenOrder.size();
}
insertNewWorkspaceScreen(screenId, insertIndex);
}
public void insertNewWorkspaceScreen(long screenId) {
insertNewWorkspaceScreen(screenId, getChildCount());
}
public CellLayout insertNewWorkspaceScreen(long screenId, int insertIndex) {
if (mWorkspaceScreens.containsKey(screenId)) {
throw new RuntimeException("Screen id " + screenId + " already exists!");
}
// Inflate the cell layout, but do not add it automatically so that we can get the newly
// created CellLayout.
CellLayout newScreen = (CellLayout) LayoutInflater.from(getContext()).inflate(
R.layout.workspace_screen, this, false /* attachToRoot */);
newScreen.setOnLongClickListener(mLongClickListener);
newScreen.setOnClickListener(mLauncher);
newScreen.setSoundEffectsEnabled(false);
int paddingLeftRight = mLauncher.getDeviceProfile().cellLayoutPaddingLeftRightPx;
int paddingBottom = mLauncher.getDeviceProfile().cellLayoutBottomPaddingPx;
newScreen.setPadding(paddingLeftRight, 0, paddingLeftRight, paddingBottom);
mWorkspaceScreens.put(screenId, newScreen);
mScreenOrder.add(insertIndex, screenId);
addView(newScreen, insertIndex);
if (mLauncher.getAccessibilityDelegate().isInAccessibleDrag()) {
newScreen.enableAccessibleDrag(true, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG);
}
return newScreen;
}
public void addExtraEmptyScreenOnDrag() {
boolean lastChildOnScreen = false;
boolean childOnFinalScreen = false;
// Cancel any pending removal of empty screen
mRemoveEmptyScreenRunnable = null;
if (mDragSourceInternal != null) {
if (mDragSourceInternal.getChildCount() == 1) {
lastChildOnScreen = true;
}
CellLayout cl = (CellLayout) mDragSourceInternal.getParent();
if (indexOfChild(cl) == getChildCount() - 1) {
childOnFinalScreen = true;
}
}
// If this is the last item on the final screen
if (lastChildOnScreen && childOnFinalScreen) {
return;
}
if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) {
insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID);
}
}
public boolean addExtraEmptyScreen() {
if (!mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID)) {
insertNewWorkspaceScreen(EXTRA_EMPTY_SCREEN_ID);
return true;
}
return false;
}
private void convertFinalScreenToEmptyScreenIfNecessary() {
if (mLauncher.isWorkspaceLoading()) {
// Invalid and dangerous operation if workspace is loading
return;
}
if (hasExtraEmptyScreen() || mScreenOrder.size() == 0) return;
long finalScreenId = mScreenOrder.get(mScreenOrder.size() - 1);
CellLayout finalScreen = mWorkspaceScreens.get(finalScreenId);
// If the final screen is empty, convert it to the extra empty screen
if (finalScreen.getShortcutsAndWidgets().getChildCount() == 0 &&
!finalScreen.isDropPending()) {
mWorkspaceScreens.remove(finalScreenId);
mScreenOrder.remove(finalScreenId);
// if this is the last screen, convert it to the empty screen
mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, finalScreen);
mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID);
// Update the model if we have changed any screens
LauncherModel.updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
}
}
public void removeExtraEmptyScreen(final boolean animate, boolean stripEmptyScreens) {
removeExtraEmptyScreenDelayed(animate, null, 0, stripEmptyScreens);
}
public void removeExtraEmptyScreenDelayed(final boolean animate, final Runnable onComplete,
final int delay, final boolean stripEmptyScreens) {
if (mLauncher.isWorkspaceLoading()) {
// Don't strip empty screens if the workspace is still loading
return;
}
if (delay > 0) {
postDelayed(new Runnable() {
@Override
public void run() {
removeExtraEmptyScreenDelayed(animate, onComplete, 0, stripEmptyScreens);
}
}, delay);
return;
}
convertFinalScreenToEmptyScreenIfNecessary();
if (hasExtraEmptyScreen()) {
int emptyIndex = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID);
if (getNextPage() == emptyIndex) {
snapToPage(getNextPage() - 1, SNAP_OFF_EMPTY_SCREEN_DURATION);
fadeAndRemoveEmptyScreen(SNAP_OFF_EMPTY_SCREEN_DURATION, FADE_EMPTY_SCREEN_DURATION,
onComplete, stripEmptyScreens);
} else {
snapToPage(getNextPage(), 0);
fadeAndRemoveEmptyScreen(0, FADE_EMPTY_SCREEN_DURATION,
onComplete, stripEmptyScreens);
}
return;
} else if (stripEmptyScreens) {
// If we're not going to strip the empty screens after removing
// the extra empty screen, do it right away.
stripEmptyScreens();
}
if (onComplete != null) {
onComplete.run();
}
}
private void fadeAndRemoveEmptyScreen(int delay, int duration, final Runnable onComplete,
final boolean stripEmptyScreens) {
// XXX: Do we need to update LM workspace screens below?
PropertyValuesHolder alpha = PropertyValuesHolder.ofFloat("alpha", 0f);
PropertyValuesHolder bgAlpha = PropertyValuesHolder.ofFloat("backgroundAlpha", 0f);
final CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID);
mRemoveEmptyScreenRunnable = new Runnable() {
@Override
public void run() {
if (hasExtraEmptyScreen()) {
mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID);
mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID);
removeView(cl);
if (stripEmptyScreens) {
stripEmptyScreens();
}
// Update the page indicator to reflect the removed page.
showPageIndicatorAtCurrentScroll();
}
}
};
ObjectAnimator oa = ObjectAnimator.ofPropertyValuesHolder(cl, alpha, bgAlpha);
oa.setDuration(duration);
oa.setStartDelay(delay);
oa.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
if (mRemoveEmptyScreenRunnable != null) {
mRemoveEmptyScreenRunnable.run();
}
if (onComplete != null) {
onComplete.run();
}
}
});
oa.start();
}
public boolean hasExtraEmptyScreen() {
return mWorkspaceScreens.containsKey(EXTRA_EMPTY_SCREEN_ID) && getChildCount() > 1;
}
public long commitExtraEmptyScreen() {
if (mLauncher.isWorkspaceLoading()) {
// Invalid and dangerous operation if workspace is loading
return -1;
}
CellLayout cl = mWorkspaceScreens.get(EXTRA_EMPTY_SCREEN_ID);
mWorkspaceScreens.remove(EXTRA_EMPTY_SCREEN_ID);
mScreenOrder.remove(EXTRA_EMPTY_SCREEN_ID);
long newId = LauncherSettings.Settings.call(getContext().getContentResolver(),
LauncherSettings.Settings.METHOD_NEW_SCREEN_ID)
.getLong(LauncherSettings.Settings.EXTRA_VALUE);
mWorkspaceScreens.put(newId, cl);
mScreenOrder.add(newId);
// Update the model for the new screen
LauncherModel.updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
return newId;
}
public CellLayout getScreenWithId(long screenId) {
return mWorkspaceScreens.get(screenId);
}
public long getIdForScreen(CellLayout layout) {
int index = mWorkspaceScreens.indexOfValue(layout);
if (index != -1) {
return mWorkspaceScreens.keyAt(index);
}
return -1;
}
public int getPageIndexForScreenId(long screenId) {
return indexOfChild(mWorkspaceScreens.get(screenId));
}
public long getScreenIdForPageIndex(int index) {
if (0 <= index && index < mScreenOrder.size()) {
return mScreenOrder.get(index);
}
return -1;
}
public ArrayList<Long> getScreenOrder() {
return mScreenOrder;
}
public void stripEmptyScreens() {
if (mLauncher.isWorkspaceLoading()) {
// Don't strip empty screens if the workspace is still loading.
// This is dangerous and can result in data loss.
return;
}
if (isPageInTransition()) {
mStripScreensOnPageStopMoving = true;
return;
}
int currentPage = getNextPage();
ArrayList<Long> removeScreens = new ArrayList<>();
int total = mWorkspaceScreens.size();
for (int i = 0; i < total; i++) {
long id = mWorkspaceScreens.keyAt(i);
CellLayout cl = mWorkspaceScreens.valueAt(i);
// FIRST_SCREEN_ID can never be removed.
if ((!FeatureFlags.QSB_ON_FIRST_SCREEN || id > FIRST_SCREEN_ID)
&& cl.getShortcutsAndWidgets().getChildCount() == 0) {
removeScreens.add(id);
}
}
boolean isInAccessibleDrag = mLauncher.getAccessibilityDelegate().isInAccessibleDrag();
// We enforce at least one page to add new items to. In the case that we remove the last
// such screen, we convert the last screen to the empty screen
int minScreens = 1;
int pageShift = 0;
for (Long id: removeScreens) {
CellLayout cl = mWorkspaceScreens.get(id);
mWorkspaceScreens.remove(id);
mScreenOrder.remove(id);
if (getChildCount() > minScreens) {
if (indexOfChild(cl) < currentPage) {
pageShift++;
}
if (isInAccessibleDrag) {
cl.enableAccessibleDrag(false, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG);
}
removeView(cl);
} else {
// if this is the last screen, convert it to the empty screen
mRemoveEmptyScreenRunnable = null;
mWorkspaceScreens.put(EXTRA_EMPTY_SCREEN_ID, cl);
mScreenOrder.add(EXTRA_EMPTY_SCREEN_ID);
}
}
if (!removeScreens.isEmpty()) {
// Update the model if we have changed any screens
LauncherModel.updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
}
if (pageShift >= 0) {
setCurrentPage(currentPage - pageShift);
}
}
/**
* At bind time, we use the rank (screenId) to compute x and y for hotseat items.
* See {@link #addInScreen}.
*/
public void addInScreenFromBind(View child, ItemInfo info) {
int x = info.cellX;
int y = info.cellY;
if (info.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
int screenId = (int) info.screenId;
x = mLauncher.getHotseat().getCellXFromOrder(screenId);
y = mLauncher.getHotseat().getCellYFromOrder(screenId);
}
addInScreen(child, info.container, info.screenId, x, y, info.spanX, info.spanY);
}
/**
* Adds the specified child in the specified screen based on the {@param info}
* See {@link #addInScreen(View, long, long, int, int, int, int)}.
*/
public void addInScreen(View child, ItemInfo info) {
addInScreen(child, info.container, info.screenId, info.cellX, info.cellY,
info.spanX, info.spanY);
}
/**
* Adds the specified child in the specified screen. The position and dimension of
* the child are defined by x, y, spanX and spanY.
*
* @param child The child to add in one of the workspace's screens.
* @param screenId The screen in which to add the child.
* @param x The X position of the child in the screen's grid.
* @param y The Y position of the child in the screen's grid.
* @param spanX The number of cells spanned horizontally by the child.
* @param spanY The number of cells spanned vertically by the child.
*/
private void addInScreen(View child, long container, long screenId, int x, int y,
int spanX, int spanY) {
if (container == LauncherSettings.Favorites.CONTAINER_DESKTOP) {
if (getScreenWithId(screenId) == null) {
Log.e(TAG, "Skipping child, screenId " + screenId + " not found");
// DEBUGGING - Print out the stack trace to see where we are adding from
new Throwable().printStackTrace();
return;
}
}
if (screenId == EXTRA_EMPTY_SCREEN_ID) {
// This should never happen
throw new RuntimeException("Screen id should not be EXTRA_EMPTY_SCREEN_ID");
}
final CellLayout layout;
if (container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
layout = mLauncher.getHotseat().getLayout();
child.setOnKeyListener(new HotseatIconKeyEventListener());
// Hide folder title in the hotseat
if (child instanceof FolderIcon) {
((FolderIcon) child).setTextVisible(false);
}
} else {
// Show folder title if not in the hotseat
if (child instanceof FolderIcon) {
((FolderIcon) child).setTextVisible(true);
}
layout = getScreenWithId(screenId);
child.setOnKeyListener(new IconKeyEventListener());
}
ViewGroup.LayoutParams genericLp = child.getLayoutParams();
CellLayout.LayoutParams lp;
if (genericLp == null || !(genericLp instanceof CellLayout.LayoutParams)) {
lp = new CellLayout.LayoutParams(x, y, spanX, spanY);
} else {
lp = (CellLayout.LayoutParams) genericLp;
lp.cellX = x;
lp.cellY = y;
lp.cellHSpan = spanX;
lp.cellVSpan = spanY;
}
if (spanX < 0 && spanY < 0) {
lp.isLockedToGrid = false;
}
// Get the canonical child id to uniquely represent this view in this screen
ItemInfo info = (ItemInfo) child.getTag();
int childId = mLauncher.getViewIdForItem(info);
boolean markCellsAsOccupied = !(child instanceof Folder);
if (!layout.addViewToCellLayout(child, -1, childId, lp, markCellsAsOccupied)) {
// TODO: This branch occurs when the workspace is adding views
// outside of the defined grid
// maybe we should be deleting these items from the LauncherModel?
Log.e(TAG, "Failed to add to item at (" + lp.cellX + "," + lp.cellY + ") to CellLayout");
}
if (!(child instanceof Folder)) {
child.setHapticFeedbackEnabled(false);
child.setOnLongClickListener(mLongClickListener);
}
if (child instanceof DropTarget) {
mDragController.addDropTarget((DropTarget) child);
}
}
/**
* Called directly from a CellLayout (not by the framework), after we've been added as a
* listener via setOnInterceptTouchEventListener(). This allows us to tell the CellLayout
* that it should intercept touch events, which is not something that is normally supported.
*/
@SuppressLint("ClickableViewAccessibility")
@Override
public boolean onTouch(View v, MotionEvent event) {
return shouldConsumeTouch(v);
}
private boolean shouldConsumeTouch(View v) {
return !workspaceIconsCanBeDragged()
|| (!workspaceInModalState() && indexOfChild(v) != mCurrentPage);
}
public boolean isSwitchingState() {
return mIsSwitchingState;
}
/** This differs from isSwitchingState in that we take into account how far the transition
* has completed. */
public boolean isFinishedSwitchingState() {
return !mIsSwitchingState
|| (mTransitionProgress > FINISHED_SWITCHING_STATE_TRANSITION_PROGRESS);
}
protected void onWindowVisibilityChanged (int visibility) {
mLauncher.onWindowVisibilityChanged(visibility);
}
@Override
public boolean dispatchUnhandledMove(View focused, int direction) {
if (workspaceInModalState() || !isFinishedSwitchingState()) {
// when the home screens are shrunken, shouldn't allow side-scrolling
return false;
}
return super.dispatchUnhandledMove(focused, direction);
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
switch (ev.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
mXDown = ev.getX();
mYDown = ev.getY();
break;
case MotionEvent.ACTION_POINTER_UP:
case MotionEvent.ACTION_UP:
if (mTouchState == TOUCH_STATE_REST) {
final CellLayout currentPage = (CellLayout) getChildAt(mCurrentPage);
if (currentPage != null) {
onWallpaperTap(ev);
}
}
}
return super.onInterceptTouchEvent(ev);
}
protected void reinflateWidgetsIfNecessary() {
final int clCount = getChildCount();
for (int i = 0; i < clCount; i++) {
CellLayout cl = (CellLayout) getChildAt(i);
ShortcutAndWidgetContainer swc = cl.getShortcutsAndWidgets();
final int itemCount = swc.getChildCount();
for (int j = 0; j < itemCount; j++) {
View v = swc.getChildAt(j);
if (v instanceof LauncherAppWidgetHostView
&& v.getTag() instanceof LauncherAppWidgetInfo) {
LauncherAppWidgetInfo info = (LauncherAppWidgetInfo) v.getTag();
LauncherAppWidgetHostView lahv = (LauncherAppWidgetHostView) v;
if (lahv.isReinflateRequired(mLauncher.getOrientation())) {
// Remove and rebind the current widget (which was inflated in the wrong
// orientation), but don't delete it from the database
mLauncher.removeItem(lahv, info, false /* deleteFromDb */);
mLauncher.bindAppWidget(info);
}
}
}
}
}
@Override
protected void determineScrollingStart(MotionEvent ev) {
if (!isFinishedSwitchingState()) return;
float deltaX = ev.getX() - mXDown;
float absDeltaX = Math.abs(deltaX);
float absDeltaY = Math.abs(ev.getY() - mYDown);
if (Float.compare(absDeltaX, 0f) == 0) return;
float slope = absDeltaY / absDeltaX;
float theta = (float) Math.atan(slope);
if (absDeltaX > mTouchSlop || absDeltaY > mTouchSlop) {
cancelCurrentPageLongPress();
}
if (theta > MAX_SWIPE_ANGLE) {
// Above MAX_SWIPE_ANGLE, we don't want to ever start scrolling the workspace
return;
} else if (theta > START_DAMPING_TOUCH_SLOP_ANGLE) {
// Above START_DAMPING_TOUCH_SLOP_ANGLE and below MAX_SWIPE_ANGLE, we want to
// increase the touch slop to make it harder to begin scrolling the workspace. This
// results in vertically scrolling widgets to more easily. The higher the angle, the
// more we increase touch slop.
theta -= START_DAMPING_TOUCH_SLOP_ANGLE;
float extraRatio = (float)
Math.sqrt((theta / (MAX_SWIPE_ANGLE - START_DAMPING_TOUCH_SLOP_ANGLE)));
super.determineScrollingStart(ev, 1 + TOUCH_SLOP_DAMPING_FACTOR * extraRatio);
} else {
// Below START_DAMPING_TOUCH_SLOP_ANGLE, we don't do anything special
super.determineScrollingStart(ev);
}
}
protected void onPageBeginTransition() {
super.onPageBeginTransition();
updateChildrenLayersEnabled(false);
}
protected void onPageEndTransition() {
super.onPageEndTransition();
updateChildrenLayersEnabled(false);
if (mDragController.isDragging()) {
if (workspaceInModalState()) {
// If we are in springloaded mode, then force an event to check if the current touch
// is under a new page (to scroll to)
mDragController.forceTouchMove();
}
}
if (mDelayedResizeRunnable != null && !mIsSwitchingState) {
mDelayedResizeRunnable.run();
mDelayedResizeRunnable = null;
}
if (mStripScreensOnPageStopMoving) {
stripEmptyScreens();
mStripScreensOnPageStopMoving = false;
}
}
protected void onScrollInteractionBegin() {
super.onScrollInteractionEnd();
mScrollInteractionBegan = true;
}
protected void onScrollInteractionEnd() {
super.onScrollInteractionEnd();
mScrollInteractionBegan = false;
if (mStartedSendingScrollEvents) {
mStartedSendingScrollEvents = false;
mLauncherOverlay.onScrollInteractionEnd();
}
}
public void setLauncherOverlay(LauncherOverlay overlay) {
mLauncherOverlay = overlay;
// A new overlay has been set. Reset event tracking
mStartedSendingScrollEvents = false;
onOverlayScrollChanged(0);
}
private boolean isScrollingOverlay() {
return mLauncherOverlay != null &&
((mIsRtl && getUnboundedScrollX() > mMaxScrollX) || (!mIsRtl && getUnboundedScrollX() < 0));
}
@Override
protected void snapToDestination() {
// If we're overscrolling the overlay, we make sure to immediately reset the PagedView
// to it's baseline position instead of letting the overscroll settle. The overlay handles
// it's own settling, and every gesture to the overlay should be self-contained and start
// from 0, so we zero it out here.
if (isScrollingOverlay()) {
// We reset mWasInOverscroll so that PagedView doesn't zero out the overscroll
// interaction when we call snapToPageImmediately.
mWasInOverscroll = false;
snapToPageImmediately(0);
} else {
super.snapToDestination();
}
}
@Override
protected void onScrollChanged(int l, int t, int oldl, int oldt) {
super.onScrollChanged(l, t, oldl, oldt);
// Update the page indicator progress.
boolean isTransitioning = mIsSwitchingState
|| (getLayoutTransition() != null && getLayoutTransition().isRunning());
if (!isTransitioning) {
showPageIndicatorAtCurrentScroll();
}
updatePageAlphaValues();
enableHwLayersOnVisiblePages();
}
private void showPageIndicatorAtCurrentScroll() {
if (mPageIndicator != null) {
mPageIndicator.setScroll(getScrollX(), computeMaxScrollX());
}
}
@Override
protected void overScroll(float amount) {
boolean shouldScrollOverlay = mLauncherOverlay != null &&
((amount <= 0 && !mIsRtl) || (amount >= 0 && mIsRtl));
boolean shouldZeroOverlay = mLauncherOverlay != null && mLastOverlayScroll != 0 &&
((amount >= 0 && !mIsRtl) || (amount <= 0 && mIsRtl));
if (shouldScrollOverlay) {
if (!mStartedSendingScrollEvents && mScrollInteractionBegan) {
mStartedSendingScrollEvents = true;
mLauncherOverlay.onScrollInteractionBegin();
}
mLastOverlayScroll = Math.abs(amount / getViewportWidth());
mLauncherOverlay.onScrollChange(mLastOverlayScroll, mIsRtl);
} else {
dampedOverScroll(amount);
}
if (shouldZeroOverlay) {
mLauncherOverlay.onScrollChange(0, mIsRtl);
}
}
@Override
protected boolean shouldFlingForVelocity(int velocityX) {
// When the overlay is moving, the fling or settle transition is controlled by the overlay.
return Float.compare(Math.abs(mOverlayTranslation), 0) == 0 &&
super.shouldFlingForVelocity(velocityX);
}
private final Interpolator mAlphaInterpolator = new DecelerateInterpolator(3f);
/**
* The overlay scroll is being controlled locally, just update our overlay effect
*/
public void onOverlayScrollChanged(float scroll) {
if (Float.compare(scroll, 1f) == 0) {
if (!mOverlayShown) {
mLauncher.getUserEventDispatcher().logActionOnContainer(Action.Touch.SWIPE,
Action.Direction.LEFT, ContainerType.WORKSPACE, 0);
}
mOverlayShown = true;
} else if (Float.compare(scroll, 0f) == 0) {
if (mOverlayShown) {
mLauncher.getUserEventDispatcher().logActionOnContainer(Action.Touch.SWIPE,
Action.Direction.RIGHT, ContainerType.WORKSPACE, -1);
}
mOverlayShown = false;
}
float offset = 0f;
float slip = 0f;
scroll = Math.max(scroll - offset, 0);
scroll = Math.min(1, scroll / (1 - offset));
float alpha = 1 - mAlphaInterpolator.getInterpolation(scroll);
float transX = mLauncher.getDragLayer().getMeasuredWidth() * scroll;
transX *= 1 - slip;
if (mIsRtl) {
transX = -transX;
}
mOverlayTranslation = transX;
// TODO(adamcohen): figure out a final effect here. We may need to recommend
// different effects based on device performance. On at least one relatively high-end
// device I've tried, translating the launcher causes things to get quite laggy.
setWorkspaceTranslationAndAlpha(Direction.X, transX, alpha);
setHotseatTranslationAndAlpha(Direction.X, transX, alpha);
}
/**
* Moves the workspace UI in the Y direction.
* @param translation the amount of shift.
* @param alpha the alpha for the workspace page
*/
public void setWorkspaceYTranslationAndAlpha(float translation, float alpha) {
setWorkspaceTranslationAndAlpha(Direction.Y, translation, alpha);
}
/**
* Moves the workspace UI in the provided direction.
* @param direction the direction to move the workspace
* @param translation the amount of shift.
* @param alpha the alpha for the workspace page
*/
private void setWorkspaceTranslationAndAlpha(Direction direction, float translation, float alpha) {
Property<View, Float> property = direction.viewProperty;
mPageAlpha[direction.ordinal()] = alpha;
float finalAlpha = mPageAlpha[0] * mPageAlpha[1];
View currentChild = getChildAt(getCurrentPage());
if (currentChild != null) {
property.set(currentChild, translation);
currentChild.setAlpha(finalAlpha);
}
// When the animation finishes, reset all pages, just in case we missed a page.
if (Float.compare(translation, 0) == 0) {
for (int i = getChildCount() - 1; i >= 0; i--) {
View child = getChildAt(i);
property.set(child, translation);
child.setAlpha(finalAlpha);
}
}
}
/**
* Moves the Hotseat UI in the provided direction.
* @param direction the direction to move the workspace
* @param translation the amount of shift.
* @param alpha the alpha for the hotseat page
*/
public void setHotseatTranslationAndAlpha(Direction direction, float translation, float alpha) {
Property<View, Float> property = direction.viewProperty;
// Skip the page indicator movement in the vertical bar layout
if (direction != Direction.Y || !mLauncher.getDeviceProfile().isVerticalBarLayout()) {
property.set(mPageIndicator, translation);
}
property.set(mLauncher.getHotseat(), translation);
setHotseatAlphaAtIndex(alpha, direction.ordinal());
}
private void setHotseatAlphaAtIndex(float alpha, int index) {
mHotseatAlpha[index] = alpha;
final float hotseatAlpha = mHotseatAlpha[0] * mHotseatAlpha[1] * mHotseatAlpha[2];
final float pageIndicatorAlpha = mHotseatAlpha[0] * mHotseatAlpha[2];
mLauncher.getHotseat().setAlpha(hotseatAlpha);
mPageIndicator.setAlpha(pageIndicatorAlpha);
}
public ValueAnimator createHotseatAlphaAnimator(float finalValue) {
if (Float.compare(finalValue, mHotseatAlpha[HOTSEAT_STATE_ALPHA_INDEX]) == 0) {
// Return a dummy animator to avoid null checks.
return ValueAnimator.ofFloat(0, 0);
} else {
ValueAnimator animator = ValueAnimator
.ofFloat(mHotseatAlpha[HOTSEAT_STATE_ALPHA_INDEX], finalValue);
animator.addUpdateListener(new AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
float value = (Float) valueAnimator.getAnimatedValue();
setHotseatAlphaAtIndex(value, HOTSEAT_STATE_ALPHA_INDEX);
}
});
AccessibilityManager am = (AccessibilityManager)
mLauncher.getSystemService(Context.ACCESSIBILITY_SERVICE);
final boolean accessibilityEnabled = am.isEnabled();
animator.addUpdateListener(
new AlphaUpdateListener(mLauncher.getHotseat(), accessibilityEnabled));
animator.addUpdateListener(
new AlphaUpdateListener(mPageIndicator, accessibilityEnabled));
return animator;
}
}
@Override
protected void notifyPageSwitchListener(int prevPage) {
super.notifyPageSwitchListener(prevPage);
if (prevPage != mCurrentPage) {
int swipeDirection = (prevPage < mCurrentPage) ? Action.Direction.RIGHT : Action.Direction.LEFT;
mLauncher.getUserEventDispatcher().logActionOnContainer(Action.Touch.SWIPE,
swipeDirection, ContainerType.WORKSPACE, prevPage);
}
}
protected void setWallpaperDimension() {
Utilities.THREAD_POOL_EXECUTOR.execute(new Runnable() {
@Override
public void run() {
final Point size = LauncherAppState.getIDP(getContext()).defaultWallpaperSize;
if (size.x != mWallpaperManager.getDesiredMinimumWidth()
|| size.y != mWallpaperManager.getDesiredMinimumHeight()) {
mWallpaperManager.suggestDesiredDimensions(size.x, size.y);
}
}
});
}
public void lockWallpaperToDefaultPage() {
mWallpaperOffset.setLockToDefaultPage(true);
}
public void unlockWallpaperFromDefaultPageOnNextLayout() {
if (mWallpaperOffset.isLockedToDefaultPage()) {
mUnlockWallpaperFromDefaultPageOnLayout = true;
requestLayout();
}
}
@Override
public void computeScroll() {
super.computeScroll();
mWallpaperOffset.syncWithScroll();
}
public void computeScrollWithoutInvalidation() {
computeScrollHelper(false);
}
@Override
protected void determineScrollingStart(MotionEvent ev, float touchSlopScale) {
if (!isSwitchingState()) {
super.determineScrollingStart(ev, touchSlopScale);
}
}
@Override
public void announceForAccessibility(CharSequence text) {
// Don't announce if apps is on top of us.
if (!mLauncher.isAppsViewVisible()) {
super.announceForAccessibility(text);
}
}
public void showOutlinesTemporarily() {
if (!mIsPageInTransition && !isTouchActive()) {
snapToPage(mCurrentPage);
}
}
private void updatePageAlphaValues() {
if (!workspaceInModalState() && !mIsSwitchingState) {
int screenCenter = getScrollX() + getViewportWidth() / 2;
for (int i = 0; i < getChildCount(); i++) {
CellLayout child = (CellLayout) getChildAt(i);
if (child != null) {
float scrollProgress = getScrollProgress(screenCenter, child, i);
float alpha = 1 - Math.abs(scrollProgress);
if (mWorkspaceFadeInAdjacentScreens) {
child.getShortcutsAndWidgets().setAlpha(alpha);
} else {
// Pages that are off-screen aren't important for accessibility.
child.getShortcutsAndWidgets().setImportantForAccessibility(
alpha > 0 ? IMPORTANT_FOR_ACCESSIBILITY_AUTO
: IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
}
}
}
}
}
protected void onAttachedToWindow() {
super.onAttachedToWindow();
IBinder windowToken = getWindowToken();
mWallpaperOffset.setWindowToken(windowToken);
computeScroll();
mDragController.setWindowToken(windowToken);
}
protected void onDetachedFromWindow() {
super.onDetachedFromWindow();
mWallpaperOffset.setWindowToken(null);
}
protected void onResume() {
mWallpaperOffset.onResume();
}
@Override
protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
if (mUnlockWallpaperFromDefaultPageOnLayout) {
mWallpaperOffset.setLockToDefaultPage(false);
mUnlockWallpaperFromDefaultPageOnLayout = false;
}
if (mFirstLayout && mCurrentPage >= 0 && mCurrentPage < getChildCount()) {
mWallpaperOffset.syncWithScroll();
mWallpaperOffset.jumpToFinal();
}
super.onLayout(changed, left, top, right, bottom);
updatePageAlphaValues();
}
@Override
public int getDescendantFocusability() {
if (workspaceInModalState()) {
return ViewGroup.FOCUS_BLOCK_DESCENDANTS;
}
return super.getDescendantFocusability();
}
public boolean workspaceInModalState() {
return mState != State.NORMAL;
}
/** Returns whether a drag should be allowed to be started from the current workspace state. */
public boolean workspaceIconsCanBeDragged() {
return mState == State.NORMAL || mState == State.SPRING_LOADED;
}
@Thunk void updateChildrenLayersEnabled(boolean force) {
boolean small = mState == State.OVERVIEW || mIsSwitchingState;
boolean enableChildrenLayers = force || small || mAnimatingViewIntoPlace || isPageInTransition();
if (enableChildrenLayers != mChildrenLayersEnabled) {
mChildrenLayersEnabled = enableChildrenLayers;
if (mChildrenLayersEnabled) {
enableHwLayersOnVisiblePages();
} else {
for (int i = 0; i < getPageCount(); i++) {
final CellLayout cl = (CellLayout) getChildAt(i);
cl.enableHardwareLayer(false);
}
}
}
}
private void enableHwLayersOnVisiblePages() {
if (mChildrenLayersEnabled) {
final int screenCount = getChildCount();
float visibleLeft = getViewportOffsetX();
float visibleRight = visibleLeft + getViewportWidth();
float scaleX = getScaleX();
if (scaleX < 1 && scaleX > 0) {
float mid = getMeasuredWidth() / 2;
visibleLeft = mid - ((mid - visibleLeft) / scaleX);
visibleRight = mid + ((visibleRight - mid) / scaleX);
}
int leftScreen = -1;
int rightScreen = -1;
for (int i = 0; i < screenCount; i++) {
final View child = getPageAt(i);
float left = child.getLeft() + child.getTranslationX() - getScrollX();
if (left <= visibleRight && (left + child.getMeasuredWidth()) >= visibleLeft) {
if (leftScreen == -1) {
leftScreen = i;
}
rightScreen = i;
}
}
if (mForceDrawAdjacentPages) {
// In overview mode, make sure that the two side pages are visible.
leftScreen = Utilities.boundToRange(getCurrentPage() - 1, 0, rightScreen);
rightScreen = Utilities.boundToRange(getCurrentPage() + 1,
leftScreen, getPageCount() - 1);
}
if (leftScreen == rightScreen) {
// make sure we're caching at least two pages always
if (rightScreen < screenCount - 1) {
rightScreen++;
} else if (leftScreen > 0) {
leftScreen--;
}
}
for (int i = 0; i < screenCount; i++) {
final CellLayout layout = (CellLayout) getPageAt(i);
// enable layers between left and right screen inclusive.
boolean enableLayer = leftScreen <= i && i <= rightScreen;
layout.enableHardwareLayer(enableLayer);
}
}
}
public void buildPageHardwareLayers() {
// force layers to be enabled just for the call to buildLayer
updateChildrenLayersEnabled(true);
if (getWindowToken() != null) {
final int childCount = getChildCount();
for (int i = 0; i < childCount; i++) {
CellLayout cl = (CellLayout) getChildAt(i);
cl.buildHardwareLayer();
}
}
updateChildrenLayersEnabled(false);
}
protected void onWallpaperTap(MotionEvent ev) {
final int[] position = mTempXY;
getLocationOnScreen(position);
int pointerIndex = ev.getActionIndex();
position[0] += (int) ev.getX(pointerIndex);
position[1] += (int) ev.getY(pointerIndex);
mWallpaperManager.sendWallpaperCommand(getWindowToken(),
ev.getAction() == MotionEvent.ACTION_UP
? WallpaperManager.COMMAND_TAP : WallpaperManager.COMMAND_SECONDARY_TAP,
position[0], position[1], 0, null);
}
public void prepareDragWithProvider(DragPreviewProvider outlineProvider) {
mOutlineProvider = outlineProvider;
}
public void onStartReordering() {
super.onStartReordering();
// Reordering handles its own animations, disable the automatic ones.
disableLayoutTransitions();
}
public void onEndReordering() {
super.onEndReordering();
if (mLauncher.isWorkspaceLoading()) {
// Invalid and dangerous operation if workspace is loading
return;
}
ArrayList<Long> prevScreenOrder = (ArrayList<Long>) mScreenOrder.clone();
mScreenOrder.clear();
int count = getChildCount();
for (int i = 0; i < count; i++) {
CellLayout cl = ((CellLayout) getChildAt(i));
mScreenOrder.add(getIdForScreen(cl));
}
for (int i = 0; i < prevScreenOrder.size(); i++) {
if (mScreenOrder.get(i) != prevScreenOrder.get(i)) {
mLauncher.getUserEventDispatcher().logOverviewReorder();
break;
}
}
LauncherModel.updateWorkspaceScreenOrder(mLauncher, mScreenOrder);
// Re-enable auto layout transitions for page deletion.
enableLayoutTransitions();
}
public boolean isInOverviewMode() {
return mState == State.OVERVIEW;
}
public void snapToPageFromOverView(int whichPage) {
mStateTransitionAnimation.snapToPageFromOverView(whichPage);
}
int getOverviewModeTranslationY() {
DeviceProfile grid = mLauncher.getDeviceProfile();
int overviewButtonBarHeight = grid.getOverviewModeButtonBarHeight();
int scaledHeight = (int) (mOverviewModeShrinkFactor * getNormalChildHeight());
Rect workspacePadding = grid.getWorkspacePadding(sTempRect);
int workspaceTop = mInsets.top + workspacePadding.top;
int workspaceBottom = getViewportHeight() - mInsets.bottom - workspacePadding.bottom;
int overviewTop = mInsets.top;
int overviewBottom = getViewportHeight() - mInsets.bottom - overviewButtonBarHeight;
int workspaceOffsetTopEdge = workspaceTop + ((workspaceBottom - workspaceTop) - scaledHeight) / 2;
int overviewOffsetTopEdge = overviewTop + (overviewBottom - overviewTop - scaledHeight) / 2;
return -workspaceOffsetTopEdge + overviewOffsetTopEdge;
}
float getSpringLoadedTranslationY() {
DeviceProfile grid = mLauncher.getDeviceProfile();
if (grid.isVerticalBarLayout() || getChildCount() == 0) {
return 0;
}
float scaledHeight = grid.workspaceSpringLoadShrinkFactor * getNormalChildHeight();
float shrunkTop = mInsets.top + grid.dropTargetBarSizePx;
float shrunkBottom = getViewportHeight() - mInsets.bottom
- grid.getWorkspacePadding(sTempRect).bottom
- grid.workspaceSpringLoadedBottomSpace;
float totalShrunkSpace = shrunkBottom - shrunkTop;
float desiredCellTop = shrunkTop + (totalShrunkSpace - scaledHeight) / 2;
float halfHeight = getHeight() / 2;
float myCenter = getTop() + halfHeight;
float cellTopFromCenter = halfHeight - getChildAt(0).getTop();
float actualCellTop = myCenter - cellTopFromCenter * grid.workspaceSpringLoadShrinkFactor;
return (desiredCellTop - actualCellTop) / grid.workspaceSpringLoadShrinkFactor;
}
float getOverviewModeShrinkFactor() {
return mOverviewModeShrinkFactor;
}
/**
* Sets the current workspace {@link State}, returning an animation transitioning the workspace
* to that new state.
*/
public Animator setStateWithAnimation(State toState, boolean animated,
AnimationLayerSet layerViews) {
final State fromState = mState;
// Update the current state
mState = toState;
// Create the animation to the new state
AnimatorSet workspaceAnim = mStateTransitionAnimation.getAnimationToState(fromState,
toState, animated, layerViews);
boolean shouldNotifyWidgetChange = !fromState.shouldUpdateWidget
&& toState.shouldUpdateWidget;
updateAccessibilityFlags();
if (shouldNotifyWidgetChange) {
mLauncher.notifyWidgetProvidersChanged();
}
onPrepareStateTransition(mState.hasMultipleVisiblePages);
StateTransitionListener listener = new StateTransitionListener();
if (animated) {
ValueAnimator stepAnimator = ValueAnimator.ofFloat(0, 1);
stepAnimator.addUpdateListener(listener);
workspaceAnim.play(stepAnimator);
workspaceAnim.addListener(listener);
} else {
listener.onAnimationStart(null);
listener.onAnimationEnd(null);
}
return workspaceAnim;
}
public State getState() {
return mState;
}
public void updateAccessibilityFlags() {
// TODO: Update the accessibility flags appropriately when dragging.
if (!mLauncher.getAccessibilityDelegate().isInAccessibleDrag()) {
int total = getPageCount();
for (int i = 0; i < total; i++) {
updateAccessibilityFlags((CellLayout) getPageAt(i), i);
}
setImportantForAccessibility((mState == State.NORMAL || mState == State.OVERVIEW)
? IMPORTANT_FOR_ACCESSIBILITY_AUTO
: IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
}
}
private void updateAccessibilityFlags(CellLayout page, int pageNo) {
if (mState == State.OVERVIEW) {
page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_YES);
page.getShortcutsAndWidgets().setImportantForAccessibility(
IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS);
page.setContentDescription(getPageDescription(pageNo));
// No custom action for the first page.
if (!FeatureFlags.QSB_ON_FIRST_SCREEN || pageNo > 0) {
if (mPagesAccessibilityDelegate == null) {
mPagesAccessibilityDelegate = new OverviewScreenAccessibilityDelegate(this);
}
page.setAccessibilityDelegate(mPagesAccessibilityDelegate);
}
} else {
int accessible = mState == State.NORMAL ?
IMPORTANT_FOR_ACCESSIBILITY_AUTO :
IMPORTANT_FOR_ACCESSIBILITY_NO_HIDE_DESCENDANTS;
page.setImportantForAccessibility(IMPORTANT_FOR_ACCESSIBILITY_NO);
page.getShortcutsAndWidgets().setImportantForAccessibility(accessible);
page.setContentDescription(null);
page.setAccessibilityDelegate(null);
}
}
public void onPrepareStateTransition(boolean multiplePagesVisible) {
mIsSwitchingState = true;
mTransitionProgress = 0;
if (multiplePagesVisible) {
mForceDrawAdjacentPages = true;
}
invalidate(); // This will call dispatchDraw(), which calls getVisiblePages().
updateChildrenLayersEnabled(false);
}
public void onEndStateTransition() {
mIsSwitchingState = false;
updateChildrenLayersEnabled(false);
mForceDrawAdjacentPages = false;
mTransitionProgress = 1;
}
public void startDrag(CellLayout.CellInfo cellInfo, DragOptions options) {
View child = cellInfo.cell;
mDragInfo = cellInfo;
child.setVisibility(INVISIBLE);
if (options.isAccessibleDrag) {
mDragController.addDragListener(new AccessibleDragListenerAdapter(
this, CellLayout.WORKSPACE_ACCESSIBILITY_DRAG) {
@Override
protected void enableAccessibleDrag(boolean enable) {
super.enableAccessibleDrag(enable);
setEnableForLayout(mLauncher.getHotseat().getLayout(),enable);
// We need to allow our individual children to become click handlers in this
// case, so temporarily unset the click handlers.
setOnClickListener(enable ? null : mLauncher);
}
});
}
beginDragShared(child, this, options);
}
public void beginDragShared(View child, DragSource source, DragOptions options) {
Object dragObject = child.getTag();
if (!(dragObject instanceof ItemInfo)) {
String msg = "Drag started with a view that has no tag set. This "
+ "will cause a crash (issue 11627249) down the line. "
+ "View: " + child + " tag: " + child.getTag();
throw new IllegalStateException(msg);
}
beginDragShared(child, source, (ItemInfo) dragObject,
new DragPreviewProvider(child), options);
}
public DragView beginDragShared(View child, DragSource source, ItemInfo dragObject,
DragPreviewProvider previewProvider, DragOptions dragOptions) {
child.clearFocus();
child.setPressed(false);
mOutlineProvider = previewProvider;
// The drag bitmap follows the touch point around on the screen
final Bitmap b = previewProvider.createDragBitmap();
int halfPadding = previewProvider.previewPadding / 2;
float scale = previewProvider.getScaleAndPosition(b, mTempXY);
int dragLayerX = mTempXY[0];
int dragLayerY = mTempXY[1];
DeviceProfile grid = mLauncher.getDeviceProfile();
Point dragVisualizeOffset = null;
Rect dragRect = null;
if (child instanceof BubbleTextView) {
dragRect = new Rect();
((BubbleTextView) child).getIconBounds(dragRect);
dragLayerY += dragRect.top;
// Note: The dragRect is used to calculate drag layer offsets, but the
// dragVisualizeOffset in addition to the dragRect (the size) to position the outline.
dragVisualizeOffset = new Point(- halfPadding, halfPadding);
} else if (child instanceof FolderIcon) {
int previewSize = grid.folderIconSizePx;
dragVisualizeOffset = new Point(- halfPadding, halfPadding - child.getPaddingTop());
dragRect = new Rect(0, child.getPaddingTop(), child.getWidth(), previewSize);
} else if (previewProvider instanceof ShortcutDragPreviewProvider) {
dragVisualizeOffset = new Point(- halfPadding, halfPadding);
}
// Clear the pressed state if necessary
if (child instanceof BubbleTextView) {
BubbleTextView icon = (BubbleTextView) child;
icon.clearPressedBackground();
}
if (child.getParent() instanceof ShortcutAndWidgetContainer) {
mDragSourceInternal = (ShortcutAndWidgetContainer) child.getParent();
}
if (child instanceof BubbleTextView && !dragOptions.isAccessibleDrag) {
PopupContainerWithArrow popupContainer = PopupContainerWithArrow
.showForIcon((BubbleTextView) child);
if (popupContainer != null) {
dragOptions.preDragCondition = popupContainer.createPreDragCondition();
mLauncher.getUserEventDispatcher().resetElapsedContainerMillis();
}
}
DragView dv = mDragController.startDrag(b, dragLayerX, dragLayerY, source,
dragObject, dragVisualizeOffset, dragRect, scale, dragOptions);
dv.setIntrinsicIconScaleFactor(dragOptions.intrinsicIconScaleFactor);
return dv;
}
private boolean transitionStateShouldAllowDrop() {
return ((!isSwitchingState() || mTransitionProgress > ALLOW_DROP_TRANSITION_PROGRESS) &&
(mState == State.NORMAL || mState == State.SPRING_LOADED));
}
/**
* {@inheritDoc}
*/
@Override
public boolean acceptDrop(DragObject d) {
// If it's an external drop (e.g. from All Apps), check if it should be accepted
CellLayout dropTargetLayout = mDropToLayout;
if (d.dragSource != this) {
// Don't accept the drop if we're not over a screen at time of drop
if (dropTargetLayout == null) {
return false;
}
if (!transitionStateShouldAllowDrop()) return false;
mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter);
// We want the point to be mapped to the dragTarget.
if (mLauncher.isHotseatLayout(dropTargetLayout)) {
mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
} else {
mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter);
}
int spanX;
int spanY;
if (mDragInfo != null) {
final CellLayout.CellInfo dragCellInfo = mDragInfo;
spanX = dragCellInfo.spanX;
spanY = dragCellInfo.spanY;
} else {
spanX = d.dragInfo.spanX;
spanY = d.dragInfo.spanY;
}
int minSpanX = spanX;
int minSpanY = spanY;
if (d.dragInfo instanceof PendingAddWidgetInfo) {
minSpanX = ((PendingAddWidgetInfo) d.dragInfo).minSpanX;
minSpanY = ((PendingAddWidgetInfo) d.dragInfo).minSpanY;
}
mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, dropTargetLayout,
mTargetCell);
float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0],
mDragViewVisualCenter[1], mTargetCell);
if (mCreateUserFolderOnDrop && willCreateUserFolder(d.dragInfo,
dropTargetLayout, mTargetCell, distance, true)) {
return true;
}
if (mAddToExistingFolderOnDrop && willAddToExistingUserFolder(d.dragInfo,
dropTargetLayout, mTargetCell, distance)) {
return true;
}
int[] resultSpan = new int[2];
mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY,
null, mTargetCell, resultSpan, CellLayout.MODE_ACCEPT_DROP);
boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0;
// Don't accept the drop if there's no room for the item
if (!foundCell) {
onNoCellFound(dropTargetLayout);
return false;
}
}
long screenId = getIdForScreen(dropTargetLayout);
if (screenId == EXTRA_EMPTY_SCREEN_ID) {
commitExtraEmptyScreen();
}
return true;
}
boolean willCreateUserFolder(ItemInfo info, CellLayout target, int[] targetCell,
float distance, boolean considerTimeout) {
if (distance > mMaxDistanceForFolderCreation) return false;
View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
return willCreateUserFolder(info, dropOverView, considerTimeout);
}
boolean willCreateUserFolder(ItemInfo info, View dropOverView, boolean considerTimeout) {
if (dropOverView != null) {
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams();
if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) {
return false;
}
}
boolean hasntMoved = false;
if (mDragInfo != null) {
hasntMoved = dropOverView == mDragInfo.cell;
}
if (dropOverView == null || hasntMoved || (considerTimeout && !mCreateUserFolderOnDrop)) {
return false;
}
boolean aboveShortcut = (dropOverView.getTag() instanceof ShortcutInfo);
boolean willBecomeShortcut =
(info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPLICATION ||
info.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT ||
info.itemType == LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT);
return (aboveShortcut && willBecomeShortcut);
}
boolean willAddToExistingUserFolder(ItemInfo dragInfo, CellLayout target, int[] targetCell,
float distance) {
if (distance > mMaxDistanceForFolderCreation) return false;
View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
return willAddToExistingUserFolder(dragInfo, dropOverView);
}
boolean willAddToExistingUserFolder(ItemInfo dragInfo, View dropOverView) {
if (dropOverView != null) {
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) dropOverView.getLayoutParams();
if (lp.useTmpCoords && (lp.tmpCellX != lp.cellX || lp.tmpCellY != lp.cellY)) {
return false;
}
}
if (dropOverView instanceof FolderIcon) {
FolderIcon fi = (FolderIcon) dropOverView;
if (fi.acceptDrop(dragInfo)) {
return true;
}
}
return false;
}
boolean createUserFolderIfNecessary(View newView, long container, CellLayout target,
int[] targetCell, float distance, boolean external, DragView dragView,
Runnable postAnimationRunnable) {
if (distance > mMaxDistanceForFolderCreation) return false;
View v = target.getChildAt(targetCell[0], targetCell[1]);
boolean hasntMoved = false;
if (mDragInfo != null) {
CellLayout cellParent = getParentCellLayoutForView(mDragInfo.cell);
hasntMoved = (mDragInfo.cellX == targetCell[0] &&
mDragInfo.cellY == targetCell[1]) && (cellParent == target);
}
if (v == null || hasntMoved || !mCreateUserFolderOnDrop) return false;
mCreateUserFolderOnDrop = false;
final long screenId = getIdForScreen(target);
boolean aboveShortcut = (v.getTag() instanceof ShortcutInfo);
boolean willBecomeShortcut = (newView.getTag() instanceof ShortcutInfo);
if (aboveShortcut && willBecomeShortcut) {
ShortcutInfo sourceInfo = (ShortcutInfo) newView.getTag();
ShortcutInfo destInfo = (ShortcutInfo) v.getTag();
// if the drag started here, we need to remove it from the workspace
if (!external) {
getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell);
}
Rect folderLocation = new Rect();
float scale = mLauncher.getDragLayer().getDescendantRectRelativeToSelf(v, folderLocation);
target.removeView(v);
FolderIcon fi =
mLauncher.addFolder(target, container, screenId, targetCell[0], targetCell[1]);
destInfo.cellX = -1;
destInfo.cellY = -1;
sourceInfo.cellX = -1;
sourceInfo.cellY = -1;
// If the dragView is null, we can't animate
boolean animate = dragView != null;
if (animate) {
// In order to keep everything continuous, we hand off the currently rendered
// folder background to the newly created icon. This preserves animation state.
fi.setFolderBackground(mFolderCreateBg);
mFolderCreateBg = new PreviewBackground();
fi.performCreateAnimation(destInfo, v, sourceInfo, dragView, folderLocation, scale,
postAnimationRunnable);
} else {
fi.prepareCreateAnimation(v);
fi.addItem(destInfo);
fi.addItem(sourceInfo);
}
return true;
}
return false;
}
boolean addToExistingFolderIfNecessary(View newView, CellLayout target, int[] targetCell,
float distance, DragObject d, boolean external) {
if (distance > mMaxDistanceForFolderCreation) return false;
View dropOverView = target.getChildAt(targetCell[0], targetCell[1]);
if (!mAddToExistingFolderOnDrop) return false;
mAddToExistingFolderOnDrop = false;
if (dropOverView instanceof FolderIcon) {
FolderIcon fi = (FolderIcon) dropOverView;
if (fi.acceptDrop(d.dragInfo)) {
fi.onDrop(d);
// if the drag started here, we need to remove it from the workspace
if (!external) {
getParentCellLayoutForView(mDragInfo.cell).removeView(mDragInfo.cell);
}
return true;
}
}
return false;
}
@Override
public void prepareAccessibilityDrop() { }
public void onDrop(final DragObject d) {
mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter);
CellLayout dropTargetLayout = mDropToLayout;
// We want the point to be mapped to the dragTarget.
if (dropTargetLayout != null) {
if (mLauncher.isHotseatLayout(dropTargetLayout)) {
mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
} else {
mapPointFromSelfToChild(dropTargetLayout, mDragViewVisualCenter);
}
}
boolean droppedOnOriginalCell = false;
int snapScreen = -1;
boolean resizeOnDrop = false;
if (d.dragSource != this) {
final int[] touchXY = new int[] { (int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1] };
onDropExternal(touchXY, dropTargetLayout, d);
} else if (mDragInfo != null) {
final View cell = mDragInfo.cell;
boolean droppedOnOriginalCellDuringTransition = false;
if (dropTargetLayout != null && !d.cancelled) {
// Move internally
boolean hasMovedLayouts = (getParentCellLayoutForView(cell) != dropTargetLayout);
boolean hasMovedIntoHotseat = mLauncher.isHotseatLayout(dropTargetLayout);
long container = hasMovedIntoHotseat ?
LauncherSettings.Favorites.CONTAINER_HOTSEAT :
LauncherSettings.Favorites.CONTAINER_DESKTOP;
long screenId = (mTargetCell[0] < 0) ?
mDragInfo.screenId : getIdForScreen(dropTargetLayout);
int spanX = mDragInfo != null ? mDragInfo.spanX : 1;
int spanY = mDragInfo != null ? mDragInfo.spanY : 1;
// First we find the cell nearest to point at which the item is
// dropped, without any consideration to whether there is an item there.
mTargetCell = findNearestArea((int) mDragViewVisualCenter[0], (int)
mDragViewVisualCenter[1], spanX, spanY, dropTargetLayout, mTargetCell);
float distance = dropTargetLayout.getDistanceFromCell(mDragViewVisualCenter[0],
mDragViewVisualCenter[1], mTargetCell);
// If the item being dropped is a shortcut and the nearest drop
// cell also contains a shortcut, then create a folder with the two shortcuts.
if (createUserFolderIfNecessary(cell, container,
dropTargetLayout, mTargetCell, distance, false, d.dragView, null)) {
return;
}
if (addToExistingFolderIfNecessary(cell, dropTargetLayout, mTargetCell,
distance, d, false)) {
return;
}
// Aside from the special case where we're dropping a shortcut onto a shortcut,
// we need to find the nearest cell location that is vacant
ItemInfo item = d.dragInfo;
int minSpanX = item.spanX;
int minSpanY = item.spanY;
if (item.minSpanX > 0 && item.minSpanY > 0) {
minSpanX = item.minSpanX;
minSpanY = item.minSpanY;
}
droppedOnOriginalCell = item.screenId == screenId && item.container == container
&& item.cellX == mTargetCell[0] && item.cellY == mTargetCell[1];
droppedOnOriginalCellDuringTransition = droppedOnOriginalCell && mIsSwitchingState;
// When quickly moving an item, a user may accidentally rearrange their
// workspace. So instead we move the icon back safely to its original position.
boolean returnToOriginalCellToPreventShuffling = !isFinishedSwitchingState()
&& !droppedOnOriginalCellDuringTransition && !dropTargetLayout
.isRegionVacant(mTargetCell[0], mTargetCell[1], spanX, spanY);
int[] resultSpan = new int[2];
if (returnToOriginalCellToPreventShuffling) {
mTargetCell[0] = mTargetCell[1] = -1;
} else {
mTargetCell = dropTargetLayout.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY, cell,
mTargetCell, resultSpan, CellLayout.MODE_ON_DROP);
}
boolean foundCell = mTargetCell[0] >= 0 && mTargetCell[1] >= 0;
// if the widget resizes on drop
if (foundCell && (cell instanceof AppWidgetHostView) &&
(resultSpan[0] != item.spanX || resultSpan[1] != item.spanY)) {
resizeOnDrop = true;
item.spanX = resultSpan[0];
item.spanY = resultSpan[1];
AppWidgetHostView awhv = (AppWidgetHostView) cell;
AppWidgetResizeFrame.updateWidgetSizeRanges(awhv, mLauncher, resultSpan[0],
resultSpan[1]);
}
if (foundCell) {
if (getScreenIdForPageIndex(mCurrentPage) != screenId && !hasMovedIntoHotseat) {
snapScreen = getPageIndexForScreenId(screenId);
snapToPage(snapScreen);
}
final ItemInfo info = (ItemInfo) cell.getTag();
if (hasMovedLayouts) {
// Reparent the view
CellLayout parentCell = getParentCellLayoutForView(cell);
if (parentCell != null) {
parentCell.removeView(cell);
} else if (FeatureFlags.IS_DOGFOOD_BUILD) {
throw new NullPointerException("mDragInfo.cell has null parent");
}
addInScreen(cell, container, screenId, mTargetCell[0], mTargetCell[1],
info.spanX, info.spanY);
}
// update the item's position after drop
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams();
lp.cellX = lp.tmpCellX = mTargetCell[0];
lp.cellY = lp.tmpCellY = mTargetCell[1];
lp.cellHSpan = item.spanX;
lp.cellVSpan = item.spanY;
lp.isLockedToGrid = true;
if (container != LauncherSettings.Favorites.CONTAINER_HOTSEAT &&
cell instanceof LauncherAppWidgetHostView) {
final CellLayout cellLayout = dropTargetLayout;
// We post this call so that the widget has a chance to be placed
// in its final location
final LauncherAppWidgetHostView hostView = (LauncherAppWidgetHostView) cell;
AppWidgetProviderInfo pInfo = hostView.getAppWidgetInfo();
if (pInfo != null && pInfo.resizeMode != AppWidgetProviderInfo.RESIZE_NONE
&& !d.accessibleDrag) {
mDelayedResizeRunnable = new Runnable() {
public void run() {
if (!isPageInTransition()) {
AppWidgetResizeFrame.showForWidget(hostView, cellLayout);
}
}
};
}
}
mLauncher.getModelWriter().modifyItemInDatabase(info, container, screenId,
lp.cellX, lp.cellY, item.spanX, item.spanY);
} else {
if (!returnToOriginalCellToPreventShuffling) {
onNoCellFound(dropTargetLayout);
}
// If we can't find a drop location, we return the item to its original position
CellLayout.LayoutParams lp = (CellLayout.LayoutParams) cell.getLayoutParams();
mTargetCell[0] = lp.cellX;
mTargetCell[1] = lp.cellY;
CellLayout layout = (CellLayout) cell.getParent().getParent();
layout.markCellsAsOccupiedForView(cell);
}
}
final CellLayout parent = (CellLayout) cell.getParent().getParent();
// Prepare it to be animated into its new position
// This must be called after the view has been re-parented
final Runnable onCompleteRunnable = new Runnable() {
@Override
public void run() {
mAnimatingViewIntoPlace = false;
updateChildrenLayersEnabled(false);
}
};
mAnimatingViewIntoPlace = true;
if (d.dragView.hasDrawn()) {
if (droppedOnOriginalCellDuringTransition) {
// Animate the item to its original position, while simultaneously exiting
// spring-loaded mode so the page meets the icon where it was picked up.
mLauncher.getDragController().animateDragViewToOriginalPosition(
mDelayedResizeRunnable, cell,
mStateTransitionAnimation.mSpringLoadedTransitionTime);
mLauncher.exitSpringLoadedDragMode();
mLauncher.getDropTargetBar().onDragEnd();
parent.onDropChild(cell);
return;
}
final ItemInfo info = (ItemInfo) cell.getTag();
boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET
|| info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
if (isWidget) {
int animationType = resizeOnDrop ? ANIMATE_INTO_POSITION_AND_RESIZE :
ANIMATE_INTO_POSITION_AND_DISAPPEAR;
animateWidgetDrop(info, parent, d.dragView,
onCompleteRunnable, animationType, cell, false);
} else {
int duration = snapScreen < 0 ? -1 : ADJACENT_SCREEN_DROP_DURATION;
mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, cell, duration,
onCompleteRunnable, this);
}
} else {
d.deferDragViewCleanupPostAnimation = false;
cell.setVisibility(VISIBLE);
}
parent.onDropChild(cell);
}
if (d.stateAnnouncer != null && !droppedOnOriginalCell) {
d.stateAnnouncer.completeAction(R.string.item_moved);
}
}
public void onNoCellFound(View dropTargetLayout) {
if (mLauncher.isHotseatLayout(dropTargetLayout)) {
Hotseat hotseat = mLauncher.getHotseat();
boolean droppedOnAllAppsIcon = !FeatureFlags.NO_ALL_APPS_ICON
&& mTargetCell != null && !mLauncher.getDeviceProfile().inv.isAllAppsButtonRank(
hotseat.getOrderInHotseat(mTargetCell[0], mTargetCell[1]));
if (!droppedOnAllAppsIcon) {
// Only show message when hotseat is full and drop target was not AllApps button
showOutOfSpaceMessage(true);
}
} else {
showOutOfSpaceMessage(false);
}
}
private void showOutOfSpaceMessage(boolean isHotseatLayout) {
int strId = (isHotseatLayout ? R.string.hotseat_out_of_space : R.string.out_of_space);
Toast.makeText(mLauncher, mLauncher.getString(strId), Toast.LENGTH_SHORT).show();
}
/**
* Computes the area relative to dragLayer which is used to display a page.
*/
public void getPageAreaRelativeToDragLayer(Rect outArea) {
CellLayout child = (CellLayout) getChildAt(getNextPage());
if (child == null) {
return;
}
ShortcutAndWidgetContainer boundingLayout = child.getShortcutsAndWidgets();
// Use the absolute left instead of the child left, as we want the visible area
// irrespective of the visible child. Since the view can only scroll horizontally, the
// top position is not affected.
mTempXY[0] = getViewportOffsetX() + getPaddingLeft() + boundingLayout.getLeft();
mTempXY[1] = child.getTop() + boundingLayout.getTop();
float scale = mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY);
outArea.set(mTempXY[0], mTempXY[1],
(int) (mTempXY[0] + scale * boundingLayout.getMeasuredWidth()),
(int) (mTempXY[1] + scale * boundingLayout.getMeasuredHeight()));
}
@Override
public void onDragEnter(DragObject d) {
if (ENFORCE_DRAG_EVENT_ORDER) {
enforceDragParity("onDragEnter", 1, 1);
}
mCreateUserFolderOnDrop = false;
mAddToExistingFolderOnDrop = false;
mDropToLayout = null;
mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter);
setDropLayoutForDragObject(d, mDragViewVisualCenter[0], mDragViewVisualCenter[1]);
}
@Override
public void onDragExit(DragObject d) {
if (ENFORCE_DRAG_EVENT_ORDER) {
enforceDragParity("onDragExit", -1, 0);
}
// Here we store the final page that will be dropped to, if the workspace in fact
// receives the drop
mDropToLayout = mDragTargetLayout;
if (mDragMode == DRAG_MODE_CREATE_FOLDER) {
mCreateUserFolderOnDrop = true;
} else if (mDragMode == DRAG_MODE_ADD_TO_FOLDER) {
mAddToExistingFolderOnDrop = true;
}
// Reset the previous drag target
setCurrentDropLayout(null);
setCurrentDragOverlappingLayout(null);
mSpringLoadedDragController.cancel();
}
private void enforceDragParity(String event, int update, int expectedValue) {
enforceDragParity(this, event, update, expectedValue);
for (int i = 0; i < getChildCount(); i++) {
enforceDragParity(getChildAt(i), event, update, expectedValue);
}
}
private void enforceDragParity(View v, String event, int update, int expectedValue) {
Object tag = v.getTag(R.id.drag_event_parity);
int value = tag == null ? 0 : (Integer) tag;
value += update;
v.setTag(R.id.drag_event_parity, value);
if (value != expectedValue) {
Log.e(TAG, event + ": Drag contract violated: " + value);
}
}
void setCurrentDropLayout(CellLayout layout) {
if (mDragTargetLayout != null) {
mDragTargetLayout.revertTempState();
mDragTargetLayout.onDragExit();
}
mDragTargetLayout = layout;
if (mDragTargetLayout != null) {
mDragTargetLayout.onDragEnter();
}
cleanupReorder(true);
cleanupFolderCreation();
setCurrentDropOverCell(-1, -1);
}
void setCurrentDragOverlappingLayout(CellLayout layout) {
if (mDragOverlappingLayout != null) {
mDragOverlappingLayout.setIsDragOverlapping(false);
}
mDragOverlappingLayout = layout;
if (mDragOverlappingLayout != null) {
mDragOverlappingLayout.setIsDragOverlapping(true);
}
// Invalidating the scrim will also force this CellLayout
// to be invalidated so that it is highlighted if necessary.
mLauncher.getDragLayer().invalidateScrim();
}
public CellLayout getCurrentDragOverlappingLayout() {
return mDragOverlappingLayout;
}
void setCurrentDropOverCell(int x, int y) {
if (x != mDragOverX || y != mDragOverY) {
mDragOverX = x;
mDragOverY = y;
setDragMode(DRAG_MODE_NONE);
}
}
void setDragMode(int dragMode) {
if (dragMode != mDragMode) {
if (dragMode == DRAG_MODE_NONE) {
cleanupAddToFolder();
// We don't want to cancel the re-order alarm every time the target cell changes
// as this feels to slow / unresponsive.
cleanupReorder(false);
cleanupFolderCreation();
} else if (dragMode == DRAG_MODE_ADD_TO_FOLDER) {
cleanupReorder(true);
cleanupFolderCreation();
} else if (dragMode == DRAG_MODE_CREATE_FOLDER) {
cleanupAddToFolder();
cleanupReorder(true);
} else if (dragMode == DRAG_MODE_REORDER) {
cleanupAddToFolder();
cleanupFolderCreation();
}
mDragMode = dragMode;
}
}
private void cleanupFolderCreation() {
if (mFolderCreateBg != null) {
mFolderCreateBg.animateToRest();
}
mFolderCreationAlarm.setOnAlarmListener(null);
mFolderCreationAlarm.cancelAlarm();
}
private void cleanupAddToFolder() {
if (mDragOverFolderIcon != null) {
mDragOverFolderIcon.onDragExit();
mDragOverFolderIcon = null;
}
}
private void cleanupReorder(boolean cancelAlarm) {
// Any pending reorders are canceled
if (cancelAlarm) {
mReorderAlarm.cancelAlarm();
}
mLastReorderX = -1;
mLastReorderY = -1;
}
/*
*
* Convert the 2D coordinate xy from the parent View's coordinate space to this CellLayout's
* coordinate space. The argument xy is modified with the return result.
*/
void mapPointFromSelfToChild(View v, float[] xy) {
xy[0] = xy[0] - v.getLeft();
xy[1] = xy[1] - v.getTop();
}
boolean isPointInSelfOverHotseat(int x, int y) {
mTempXY[0] = x;
mTempXY[1] = y;
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true);
View hotseat = mLauncher.getHotseat();
return mTempXY[0] >= hotseat.getLeft() &&
mTempXY[0] <= hotseat.getRight() &&
mTempXY[1] >= hotseat.getTop() &&
mTempXY[1] <= hotseat.getBottom();
}
void mapPointFromSelfToHotseatLayout(Hotseat hotseat, float[] xy) {
mTempXY[0] = (int) xy[0];
mTempXY[1] = (int) xy[1];
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(this, mTempXY, true);
mLauncher.getDragLayer().mapCoordInSelfToDescendant(hotseat.getLayout(), mTempXY);
xy[0] = mTempXY[0];
xy[1] = mTempXY[1];
}
private boolean isDragWidget(DragObject d) {
return (d.dragInfo instanceof LauncherAppWidgetInfo ||
d.dragInfo instanceof PendingAddWidgetInfo);
}
public void onDragOver(DragObject d) {
// Skip drag over events while we are dragging over side pages
if (!transitionStateShouldAllowDrop()) return;
ItemInfo item = d.dragInfo;
if (item == null) {
if (FeatureFlags.IS_DOGFOOD_BUILD) {
throw new NullPointerException("DragObject has null info");
}
return;
}
// Ensure that we have proper spans for the item that we are dropping
if (item.spanX < 0 || item.spanY < 0) throw new RuntimeException("Improper spans found");
mDragViewVisualCenter = d.getVisualCenter(mDragViewVisualCenter);
final View child = (mDragInfo == null) ? null : mDragInfo.cell;
if (setDropLayoutForDragObject(d, mDragViewVisualCenter[0], mDragViewVisualCenter[1])) {
if (mLauncher.isHotseatLayout(mDragTargetLayout)) {
mSpringLoadedDragController.cancel();
} else {
mSpringLoadedDragController.setAlarm(mDragTargetLayout);
}
}
// Handle the drag over
if (mDragTargetLayout != null) {
// We want the point to be mapped to the dragTarget.
if (mLauncher.isHotseatLayout(mDragTargetLayout)) {
mapPointFromSelfToHotseatLayout(mLauncher.getHotseat(), mDragViewVisualCenter);
} else {
mapPointFromSelfToChild(mDragTargetLayout, mDragViewVisualCenter);
}
int minSpanX = item.spanX;
int minSpanY = item.spanY;
if (item.minSpanX > 0 && item.minSpanY > 0) {
minSpanX = item.minSpanX;
minSpanY = item.minSpanY;
}
mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY,
mDragTargetLayout, mTargetCell);
int reorderX = mTargetCell[0];
int reorderY = mTargetCell[1];
setCurrentDropOverCell(mTargetCell[0], mTargetCell[1]);
float targetCellDistance = mDragTargetLayout.getDistanceFromCell(
mDragViewVisualCenter[0], mDragViewVisualCenter[1], mTargetCell);
manageFolderFeedback(mDragTargetLayout, mTargetCell, targetCellDistance, d);
boolean nearestDropOccupied = mDragTargetLayout.isNearestDropLocationOccupied((int)
mDragViewVisualCenter[0], (int) mDragViewVisualCenter[1], item.spanX,
item.spanY, child, mTargetCell);
if (!nearestDropOccupied) {
mDragTargetLayout.visualizeDropLocation(child, mOutlineProvider,
mTargetCell[0], mTargetCell[1], item.spanX, item.spanY, false, d);
} else if ((mDragMode == DRAG_MODE_NONE || mDragMode == DRAG_MODE_REORDER)
&& !mReorderAlarm.alarmPending() && (mLastReorderX != reorderX ||
mLastReorderY != reorderY)) {
int[] resultSpan = new int[2];
mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, item.spanX, item.spanY,
child, mTargetCell, resultSpan, CellLayout.MODE_SHOW_REORDER_HINT);
// Otherwise, if we aren't adding to or creating a folder and there's no pending
// reorder, then we schedule a reorder
ReorderAlarmListener listener = new ReorderAlarmListener(mDragViewVisualCenter,
minSpanX, minSpanY, item.spanX, item.spanY, d, child);
mReorderAlarm.setOnAlarmListener(listener);
mReorderAlarm.setAlarm(REORDER_TIMEOUT);
}
if (mDragMode == DRAG_MODE_CREATE_FOLDER || mDragMode == DRAG_MODE_ADD_TO_FOLDER ||
!nearestDropOccupied) {
if (mDragTargetLayout != null) {
mDragTargetLayout.revertTempState();
}
}
}
}
/**
* Updates {@link #mDragTargetLayout} and {@link #mDragOverlappingLayout}
* based on the DragObject's position.
*
* The layout will be:
* - The Hotseat if the drag object is over it
* - A side page if we are in spring-loaded mode and the drag object is over it
* - The current page otherwise
*
* @return whether the layout is different from the current {@link #mDragTargetLayout}.
*/
private boolean setDropLayoutForDragObject(DragObject d, float centerX, float centerY) {
CellLayout layout = null;
// Test to see if we are over the hotseat first
if (mLauncher.getHotseat() != null && !isDragWidget(d)) {
if (isPointInSelfOverHotseat(d.x, d.y)) {
layout = mLauncher.getHotseat().getLayout();
}
}
int nextPage = getNextPage();
if (layout == null && !isPageInTransition()) {
// Check if the item is dragged over left page
mTempTouchCoordinates[0] = Math.min(centerX, d.x);
mTempTouchCoordinates[1] = d.y;
layout = verifyInsidePage(nextPage + (mIsRtl ? 1 : -1), mTempTouchCoordinates);
}
if (layout == null && !isPageInTransition()) {
// Check if the item is dragged over right page
mTempTouchCoordinates[0] = Math.max(centerX, d.x);
mTempTouchCoordinates[1] = d.y;
layout = verifyInsidePage(nextPage + (mIsRtl ? -1 : 1), mTempTouchCoordinates);
}
// Always pick the current page.
if (layout == null && nextPage >= 0 && nextPage < getPageCount()) {
layout = (CellLayout) getChildAt(nextPage);
}
if (layout != mDragTargetLayout) {
setCurrentDropLayout(layout);
setCurrentDragOverlappingLayout(layout);
return true;
}
return false;
}
/**
* Returns the child CellLayout if the point is inside the page coordinates, null otherwise.
*/
private CellLayout verifyInsidePage(int pageNo, float[] touchXy) {
if (pageNo >= 0 && pageNo < getPageCount()) {
CellLayout cl = (CellLayout) getChildAt(pageNo);
mapPointFromSelfToChild(cl, touchXy);
if (touchXy[0] >= 0 && touchXy[0] <= cl.getWidth() &&
touchXy[1] >= 0 && touchXy[1] <= cl.getHeight()) {
// This point is inside the cell layout
return cl;
}
}
return null;
}
private void manageFolderFeedback(CellLayout targetLayout,
int[] targetCell, float distance, DragObject dragObject) {
if (distance > mMaxDistanceForFolderCreation) return;
final View dragOverView = mDragTargetLayout.getChildAt(mTargetCell[0], mTargetCell[1]);
ItemInfo info = dragObject.dragInfo;
boolean userFolderPending = willCreateUserFolder(info, dragOverView, false);
if (mDragMode == DRAG_MODE_NONE && userFolderPending &&
!mFolderCreationAlarm.alarmPending()) {
FolderCreationAlarmListener listener = new
FolderCreationAlarmListener(targetLayout, targetCell[0], targetCell[1]);
if (!dragObject.accessibleDrag) {
mFolderCreationAlarm.setOnAlarmListener(listener);
mFolderCreationAlarm.setAlarm(FOLDER_CREATION_TIMEOUT);
} else {
listener.onAlarm(mFolderCreationAlarm);
}
if (dragObject.stateAnnouncer != null) {
dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper
.getDescriptionForDropOver(dragOverView, getContext()));
}
return;
}
boolean willAddToFolder = willAddToExistingUserFolder(info, dragOverView);
if (willAddToFolder && mDragMode == DRAG_MODE_NONE) {
mDragOverFolderIcon = ((FolderIcon) dragOverView);
mDragOverFolderIcon.onDragEnter(info);
if (targetLayout != null) {
targetLayout.clearDragOutlines();
}
setDragMode(DRAG_MODE_ADD_TO_FOLDER);
if (dragObject.stateAnnouncer != null) {
dragObject.stateAnnouncer.announce(WorkspaceAccessibilityHelper
.getDescriptionForDropOver(dragOverView, getContext()));
}
return;
}
if (mDragMode == DRAG_MODE_ADD_TO_FOLDER && !willAddToFolder) {
setDragMode(DRAG_MODE_NONE);
}
if (mDragMode == DRAG_MODE_CREATE_FOLDER && !userFolderPending) {
setDragMode(DRAG_MODE_NONE);
}
}
class FolderCreationAlarmListener implements OnAlarmListener {
final CellLayout layout;
final int cellX;
final int cellY;
final PreviewBackground bg = new PreviewBackground();
public FolderCreationAlarmListener(CellLayout layout, int cellX, int cellY) {
this.layout = layout;
this.cellX = cellX;
this.cellY = cellY;
BubbleTextView cell = (BubbleTextView) layout.getChildAt(cellX, cellY);
bg.setup(mLauncher, null, cell.getMeasuredWidth(), cell.getPaddingTop());
// The full preview background should appear behind the icon
bg.isClipping = false;
}
public void onAlarm(Alarm alarm) {
mFolderCreateBg = bg;
mFolderCreateBg.animateToAccept(layout, cellX, cellY);
layout.clearDragOutlines();
setDragMode(DRAG_MODE_CREATE_FOLDER);
}
}
class ReorderAlarmListener implements OnAlarmListener {
final float[] dragViewCenter;
final int minSpanX, minSpanY, spanX, spanY;
final DragObject dragObject;
final View child;
public ReorderAlarmListener(float[] dragViewCenter, int minSpanX, int minSpanY, int spanX,
int spanY, DragObject dragObject, View child) {
this.dragViewCenter = dragViewCenter;
this.minSpanX = minSpanX;
this.minSpanY = minSpanY;
this.spanX = spanX;
this.spanY = spanY;
this.child = child;
this.dragObject = dragObject;
}
public void onAlarm(Alarm alarm) {
int[] resultSpan = new int[2];
mTargetCell = findNearestArea((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, mDragTargetLayout,
mTargetCell);
mLastReorderX = mTargetCell[0];
mLastReorderY = mTargetCell[1];
mTargetCell = mDragTargetLayout.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, spanX, spanY,
child, mTargetCell, resultSpan, CellLayout.MODE_DRAG_OVER);
if (mTargetCell[0] < 0 || mTargetCell[1] < 0) {
mDragTargetLayout.revertTempState();
} else {
setDragMode(DRAG_MODE_REORDER);
}
boolean resize = resultSpan[0] != spanX || resultSpan[1] != spanY;
mDragTargetLayout.visualizeDropLocation(child, mOutlineProvider,
mTargetCell[0], mTargetCell[1], resultSpan[0], resultSpan[1], resize, dragObject);
}
}
@Override
public void getHitRectRelativeToDragLayer(Rect outRect) {
// We want the workspace to have the whole area of the display (it will find the correct
// cell layout to drop to in the existing drag/drop logic.
mLauncher.getDragLayer().getDescendantRectRelativeToSelf(this, outRect);
}
/**
* Drop an item that didn't originate on one of the workspace screens.
* It may have come from Launcher (e.g. from all apps or customize), or it may have
* come from another app altogether.
*
* NOTE: This can also be called when we are outside of a drag event, when we want
* to add an item to one of the workspace screens.
*/
private void onDropExternal(final int[] touchXY, final CellLayout cellLayout, DragObject d) {
final Runnable exitSpringLoadedRunnable = new Runnable() {
@Override
public void run() {
mLauncher.exitSpringLoadedDragModeDelayed(true,
Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, null);
}
};
if (d.dragInfo instanceof PendingAddShortcutInfo) {
ShortcutInfo si = ((PendingAddShortcutInfo) d.dragInfo)
.activityInfo.createShortcutInfo();
if (si != null) {
d.dragInfo = si;
}
}
ItemInfo info = d.dragInfo;
int spanX = info.spanX;
int spanY = info.spanY;
if (mDragInfo != null) {
spanX = mDragInfo.spanX;
spanY = mDragInfo.spanY;
}
final long container = mLauncher.isHotseatLayout(cellLayout) ?
LauncherSettings.Favorites.CONTAINER_HOTSEAT :
LauncherSettings.Favorites.CONTAINER_DESKTOP;
final long screenId = getIdForScreen(cellLayout);
if (!mLauncher.isHotseatLayout(cellLayout)
&& screenId != getScreenIdForPageIndex(mCurrentPage)
&& mState != State.SPRING_LOADED) {
snapToPage(getPageIndexForScreenId(screenId));
}
if (info instanceof PendingAddItemInfo) {
final PendingAddItemInfo pendingInfo = (PendingAddItemInfo) info;
boolean findNearestVacantCell = true;
if (pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT) {
mTargetCell = findNearestArea(touchXY[0], touchXY[1], spanX, spanY,
cellLayout, mTargetCell);
float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0],
mDragViewVisualCenter[1], mTargetCell);
if (willCreateUserFolder(d.dragInfo, cellLayout, mTargetCell, distance, true)
|| willAddToExistingUserFolder(
d.dragInfo, cellLayout, mTargetCell, distance)) {
findNearestVacantCell = false;
}
}
final ItemInfo item = d.dragInfo;
boolean updateWidgetSize = false;
if (findNearestVacantCell) {
int minSpanX = item.spanX;
int minSpanY = item.spanY;
if (item.minSpanX > 0 && item.minSpanY > 0) {
minSpanX = item.minSpanX;
minSpanY = item.minSpanY;
}
int[] resultSpan = new int[2];
mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], minSpanX, minSpanY, info.spanX, info.spanY,
null, mTargetCell, resultSpan, CellLayout.MODE_ON_DROP_EXTERNAL);
if (resultSpan[0] != item.spanX || resultSpan[1] != item.spanY) {
updateWidgetSize = true;
}
item.spanX = resultSpan[0];
item.spanY = resultSpan[1];
}
Runnable onAnimationCompleteRunnable = new Runnable() {
@Override
public void run() {
// Normally removeExtraEmptyScreen is called in Workspace#onDragEnd, but when
// adding an item that may not be dropped right away (due to a config activity)
// we defer the removal until the activity returns.
deferRemoveExtraEmptyScreen();
// When dragging and dropping from customization tray, we deal with creating
// widgets/shortcuts/folders in a slightly different way
mLauncher.addPendingItem(pendingInfo, container, screenId, mTargetCell,
item.spanX, item.spanY);
}
};
boolean isWidget = pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET
|| pendingInfo.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
AppWidgetHostView finalView = isWidget ?
((PendingAddWidgetInfo) pendingInfo).boundWidget : null;
if (finalView != null && updateWidgetSize) {
AppWidgetResizeFrame.updateWidgetSizeRanges(finalView, mLauncher, item.spanX,
item.spanY);
}
int animationStyle = ANIMATE_INTO_POSITION_AND_DISAPPEAR;
if (isWidget && ((PendingAddWidgetInfo) pendingInfo).info != null &&
((PendingAddWidgetInfo) pendingInfo).getHandler().needsConfigure()) {
animationStyle = ANIMATE_INTO_POSITION_AND_REMAIN;
}
animateWidgetDrop(info, cellLayout, d.dragView, onAnimationCompleteRunnable,
animationStyle, finalView, true);
} else {
// This is for other drag/drop cases, like dragging from All Apps
View view;
switch (info.itemType) {
case LauncherSettings.Favorites.ITEM_TYPE_APPLICATION:
case LauncherSettings.Favorites.ITEM_TYPE_SHORTCUT:
case LauncherSettings.Favorites.ITEM_TYPE_DEEP_SHORTCUT:
if (info.container == NO_ID && info instanceof AppInfo) {
// Came from all apps -- make a copy
info = ((AppInfo) info).makeShortcut();
d.dragInfo = info;
}
view = mLauncher.createShortcut(cellLayout, (ShortcutInfo) info);
break;
case LauncherSettings.Favorites.ITEM_TYPE_FOLDER:
view = FolderIcon.fromXml(R.layout.folder_icon, mLauncher, cellLayout,
(FolderInfo) info);
break;
default:
throw new IllegalStateException("Unknown item type: " + info.itemType);
}
// First we find the cell nearest to point at which the item is
// dropped, without any consideration to whether there is an item there.
if (touchXY != null) {
mTargetCell = findNearestArea(touchXY[0], touchXY[1], spanX, spanY,
cellLayout, mTargetCell);
float distance = cellLayout.getDistanceFromCell(mDragViewVisualCenter[0],
mDragViewVisualCenter[1], mTargetCell);
d.postAnimationRunnable = exitSpringLoadedRunnable;
if (createUserFolderIfNecessary(view, container, cellLayout, mTargetCell, distance,
true, d.dragView, d.postAnimationRunnable)) {
return;
}
if (addToExistingFolderIfNecessary(view, cellLayout, mTargetCell, distance, d,
true)) {
return;
}
}
if (touchXY != null) {
// when dragging and dropping, just find the closest free spot
mTargetCell = cellLayout.performReorder((int) mDragViewVisualCenter[0],
(int) mDragViewVisualCenter[1], 1, 1, 1, 1,
null, mTargetCell, null, CellLayout.MODE_ON_DROP_EXTERNAL);
} else {
cellLayout.findCellForSpan(mTargetCell, 1, 1);
}
// Add the item to DB before adding to screen ensures that the container and other
// values of the info is properly updated.
mLauncher.getModelWriter().addOrMoveItemInDatabase(info, container, screenId,
mTargetCell[0], mTargetCell[1]);
addInScreen(view, container, screenId, mTargetCell[0], mTargetCell[1],
info.spanX, info.spanY);
cellLayout.onDropChild(view);
cellLayout.getShortcutsAndWidgets().measureChild(view);
if (d.dragView != null) {
// We wrap the animation call in the temporary set and reset of the current
// cellLayout to its final transform -- this means we animate the drag view to
// the correct final location.
setFinalTransitionTransform(cellLayout);
mLauncher.getDragLayer().animateViewIntoPosition(d.dragView, view,
exitSpringLoadedRunnable, this);
resetTransitionTransform(cellLayout);
}
}
}
public Bitmap createWidgetBitmap(ItemInfo widgetInfo, View layout) {
int[] unScaledSize = estimateItemSize(widgetInfo);
int visibility = layout.getVisibility();
layout.setVisibility(VISIBLE);
int width = MeasureSpec.makeMeasureSpec(unScaledSize[0], MeasureSpec.EXACTLY);
int height = MeasureSpec.makeMeasureSpec(unScaledSize[1], MeasureSpec.EXACTLY);
Bitmap b = Bitmap.createBitmap(unScaledSize[0], unScaledSize[1],
Bitmap.Config.ARGB_8888);
layout.measure(width, height);
layout.layout(0, 0, unScaledSize[0], unScaledSize[1]);
layout.draw(new Canvas(b));
layout.setVisibility(visibility);
return b;
}
private void getFinalPositionForDropAnimation(int[] loc, float[] scaleXY,
DragView dragView, CellLayout layout, ItemInfo info, int[] targetCell, boolean scale) {
// Now we animate the dragView, (ie. the widget or shortcut preview) into its final
// location and size on the home screen.
int spanX = info.spanX;
int spanY = info.spanY;
Rect r = estimateItemPosition(layout, targetCell[0], targetCell[1], spanX, spanY);
if (info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET) {
DeviceProfile profile = mLauncher.getDeviceProfile();
Utilities.shrinkRect(r, profile.appWidgetScale.x, profile.appWidgetScale.y);
}
loc[0] = r.left;
loc[1] = r.top;
setFinalTransitionTransform(layout);
float cellLayoutScale =
mLauncher.getDragLayer().getDescendantCoordRelativeToSelf(layout, loc, true);
resetTransitionTransform(layout);
if (scale) {
float dragViewScaleX = (1.0f * r.width()) / dragView.getMeasuredWidth();
float dragViewScaleY = (1.0f * r.height()) / dragView.getMeasuredHeight();
// The animation will scale the dragView about its center, so we need to center about
// the final location.
loc[0] -= (dragView.getMeasuredWidth() - cellLayoutScale * r.width()) / 2
- Math.ceil(layout.getUnusedHorizontalSpace() / 2f);
loc[1] -= (dragView.getMeasuredHeight() - cellLayoutScale * r.height()) / 2;
scaleXY[0] = dragViewScaleX * cellLayoutScale;
scaleXY[1] = dragViewScaleY * cellLayoutScale;
} else {
// Since we are not cross-fading the dragView, align the drag view to the
// final cell position.
float dragScale = dragView.getInitialScale() * cellLayoutScale;
loc[0] += (dragScale - 1) * dragView.getWidth() / 2;
loc[1] += (dragScale - 1) * dragView.getHeight() / 2;
scaleXY[0] = scaleXY[1] = dragScale;
// If a dragRegion was provided, offset the final position accordingly.
Rect dragRegion = dragView.getDragRegion();
if (dragRegion != null) {
loc[0] += cellLayoutScale * dragRegion.left;
loc[1] += cellLayoutScale * dragRegion.top;
}
}
}
public void animateWidgetDrop(ItemInfo info, CellLayout cellLayout, final DragView dragView,
final Runnable onCompleteRunnable, int animationType, final View finalView,
boolean external) {
Rect from = new Rect();
mLauncher.getDragLayer().getViewRectRelativeToSelf(dragView, from);
int[] finalPos = new int[2];
float scaleXY[] = new float[2];
boolean scalePreview = !(info instanceof PendingAddShortcutInfo);
getFinalPositionForDropAnimation(finalPos, scaleXY, dragView, cellLayout, info, mTargetCell,
scalePreview);
Resources res = mLauncher.getResources();
final int duration = res.getInteger(R.integer.config_dropAnimMaxDuration) - 200;
boolean isWidget = info.itemType == LauncherSettings.Favorites.ITEM_TYPE_APPWIDGET ||
info.itemType == LauncherSettings.Favorites.ITEM_TYPE_CUSTOM_APPWIDGET;
if ((animationType == ANIMATE_INTO_POSITION_AND_RESIZE || external) && finalView != null) {
Bitmap crossFadeBitmap = createWidgetBitmap(info, finalView);
dragView.setCrossFadeBitmap(crossFadeBitmap);
dragView.crossFade((int) (duration * 0.8f));
} else if (isWidget && external) {
scaleXY[0] = scaleXY[1] = Math.min(scaleXY[0], scaleXY[1]);
}
DragLayer dragLayer = mLauncher.getDragLayer();
if (animationType == CANCEL_TWO_STAGE_WIDGET_DROP_ANIMATION) {
mLauncher.getDragLayer().animateViewIntoPosition(dragView, finalPos, 0f, 0.1f, 0.1f,
DragLayer.ANIMATION_END_DISAPPEAR, onCompleteRunnable, duration);
} else {
int endStyle;
if (animationType == ANIMATE_INTO_POSITION_AND_REMAIN) {
endStyle = DragLayer.ANIMATION_END_REMAIN_VISIBLE;
} else {
endStyle = DragLayer.ANIMATION_END_DISAPPEAR;
}
Runnable onComplete = new Runnable() {
@Override
public void run() {
if (finalView != null) {
finalView.setVisibility(VISIBLE);
}
if (onCompleteRunnable != null) {
onCompleteRunnable.run();
}
}
};
dragLayer.animateViewIntoPosition(dragView, from.left, from.top, finalPos[0],
finalPos[1], 1, 1, 1, scaleXY[0], scaleXY[1], onComplete, endStyle,
duration, this);
}
}
public void setFinalTransitionTransform(CellLayout layout) {
if (isSwitchingState()) {
mCurrentScale = getScaleX();
setScaleX(mStateTransitionAnimation.getFinalScale());
setScaleY(mStateTransitionAnimation.getFinalScale());
}
}
public void resetTransitionTransform(CellLayout layout) {
if (isSwitchingState()) {
setScaleX(mCurrentScale);
setScaleY(mCurrentScale);
}
}
public WorkspaceStateTransitionAnimation getStateTransitionAnimation() {
return mStateTransitionAnimation;
}
/**
* Return the current CellInfo describing our current drag; this method exists
* so that Launcher can sync this object with the correct info when the activity is created/
* destroyed
*
*/
public CellLayout.CellInfo getDragInfo() {
return mDragInfo;
}
/**
* Calculate the nearest cell where the given object would be dropped.
*
* pixelX and pixelY should be in the coordinate system of layout
*/
@Thunk int[] findNearestArea(int pixelX, int pixelY,
int spanX, int spanY, CellLayout layout, int[] recycle) {
return layout.findNearestArea(
pixelX, pixelY, spanX, spanY, recycle);
}
void setup(DragController dragController) {
mSpringLoadedDragController = new SpringLoadedDragController(mLauncher);
mDragController = dragController;
// hardware layers on children are enabled on startup, but should be disabled until
// needed
updateChildrenLayersEnabled(false);
}
/**
* Called at the end of a drag which originated on the workspace.
*/
public void onDropCompleted(final View target, final DragObject d,
final boolean isFlingToDelete, final boolean success) {
if (mDeferDropAfterUninstall) {
final CellLayout.CellInfo dragInfo = mDragInfo;
mDeferredAction = new Runnable() {
public void run() {
mDragInfo = dragInfo; // Restore the drag info that was cleared in onDragEnd()
onDropCompleted(target, d, isFlingToDelete, success);
mDeferredAction = null;
}
};
return;
}
boolean beingCalledAfterUninstall = mDeferredAction != null;
if (success && !(beingCalledAfterUninstall && !mUninstallSuccessful)) {
if (target != this && mDragInfo != null) {
removeWorkspaceItem(mDragInfo.cell);
}
} else if (mDragInfo != null) {
final CellLayout cellLayout = mLauncher.getCellLayout(
mDragInfo.container, mDragInfo.screenId);
if (cellLayout != null) {
cellLayout.onDropChild(mDragInfo.cell);
} else if (FeatureFlags.IS_DOGFOOD_BUILD) {
throw new RuntimeException("Invalid state: cellLayout == null in "
+ "Workspace#onDropCompleted. Please file a bug. ");
}
}
if ((d.cancelled || (beingCalledAfterUninstall && !mUninstallSuccessful))
&& mDragInfo != null && mDragInfo.cell != null) {
mDragInfo.cell.setVisibility(VISIBLE);
}
mDragInfo = null;
if (!isFlingToDelete) {
// Fling to delete already exits spring loaded mode after the animation finishes.
mLauncher.exitSpringLoadedDragModeDelayed(success,
Launcher.EXIT_SPRINGLOADED_MODE_SHORT_TIMEOUT, mDelayedResizeRunnable);
mDelayedResizeRunnable = null;
}
}
/**
* For opposite operation. See {@link #addInScreen}.
*/
public void removeWorkspaceItem(View v) {
CellLayout parentCell = getParentCellLayoutForView(v);
if (parentCell != null) {
parentCell.removeView(v);
} else if (FeatureFlags.IS_DOGFOOD_BUILD) {
// When an app is uninstalled using the drop target, we wait until resume to remove
// the icon. We also remove all the corresponding items from the workspace at
// {@link Launcher#bindComponentsRemoved}. That call can come before or after
// {@link Launcher#mOnResumeCallbacks} depending on how busy the worker thread is.
Log.e(TAG, "mDragInfo.cell has null parent");
}
if (v instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) v);
}
}
/**
* Removes all folder listeners
*/
public void removeFolderListeners() {
mapOverItems(false, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View view) {
if (view instanceof FolderIcon) {
((FolderIcon) view).removeListeners();
}
return false;
}
});
}
@Override
public void deferCompleteDropAfterUninstallActivity() {
mDeferDropAfterUninstall = true;
}
/// maybe move this into a smaller part
@Override
public void onDragObjectRemoved(boolean success) {
mDeferDropAfterUninstall = false;
mUninstallSuccessful = success;
if (mDeferredAction != null) {
mDeferredAction.run();
}
}
public boolean isDropEnabled() {
return true;
}
@Override
protected void dispatchRestoreInstanceState(SparseArray<Parcelable> container) {
// We don't dispatch restoreInstanceState to our children using this code path.
// Some pages will be restored immediately as their items are bound immediately, and
// others we will need to wait until after their items are bound.
mSavedStates = container;
}
public void restoreInstanceStateForChild(int child) {
if (mSavedStates != null) {
mRestoredPages.add(child);
CellLayout cl = (CellLayout) getChildAt(child);
if (cl != null) {
cl.restoreInstanceState(mSavedStates);
}
}
}
public void restoreInstanceStateForRemainingPages() {
int count = getChildCount();
for (int i = 0; i < count; i++) {
if (!mRestoredPages.contains(i)) {
restoreInstanceStateForChild(i);
}
}
mRestoredPages.clear();
mSavedStates = null;
}
@Override
public void scrollLeft() {
if (!workspaceInModalState() && !mIsSwitchingState) {
super.scrollLeft();
}
Folder openFolder = Folder.getOpen(mLauncher);
if (openFolder != null) {
openFolder.completeDragExit();
}
}
@Override
public void scrollRight() {
if (!workspaceInModalState() && !mIsSwitchingState) {
super.scrollRight();
}
Folder openFolder = Folder.getOpen(mLauncher);
if (openFolder != null) {
openFolder.completeDragExit();
}
}
/**
* Returns a specific CellLayout
*/
CellLayout getParentCellLayoutForView(View v) {
ArrayList<CellLayout> layouts = getWorkspaceAndHotseatCellLayouts();
for (CellLayout layout : layouts) {
if (layout.getShortcutsAndWidgets().indexOfChild(v) > -1) {
return layout;
}
}
return null;
}
/**
* Returns a list of all the CellLayouts in the workspace.
*/
ArrayList<CellLayout> getWorkspaceAndHotseatCellLayouts() {
ArrayList<CellLayout> layouts = new ArrayList<>();
int screenCount = getChildCount();
for (int screen = 0; screen < screenCount; screen++) {
layouts.add(((CellLayout) getChildAt(screen)));
}
if (mLauncher.getHotseat() != null) {
layouts.add(mLauncher.getHotseat().getLayout());
}
return layouts;
}
/**
* We should only use this to search for specific children. Do not use this method to modify
* ShortcutsAndWidgetsContainer directly. Includes ShortcutAndWidgetContainers from
* the hotseat and workspace pages
*/
ArrayList<ShortcutAndWidgetContainer> getAllShortcutAndWidgetContainers() {
ArrayList<ShortcutAndWidgetContainer> childrenLayouts = new ArrayList<>();
int screenCount = getChildCount();
for (int screen = 0; screen < screenCount; screen++) {
childrenLayouts.add(((CellLayout) getChildAt(screen)).getShortcutsAndWidgets());
}
if (mLauncher.getHotseat() != null) {
childrenLayouts.add(mLauncher.getHotseat().getLayout().getShortcutsAndWidgets());
}
return childrenLayouts;
}
public View getHomescreenIconByItemId(final long id) {
return getFirstMatch(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
return info != null && info.id == id;
}
});
}
public View getViewForTag(final Object tag) {
return getFirstMatch(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
return info == tag;
}
});
}
public LauncherAppWidgetHostView getWidgetForAppWidgetId(final int appWidgetId) {
return (LauncherAppWidgetHostView) getFirstMatch(new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
return (info instanceof LauncherAppWidgetInfo) &&
((LauncherAppWidgetInfo) info).appWidgetId == appWidgetId;
}
});
}
public View getFirstMatch(final ItemOperator operator) {
final View[] value = new View[1];
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
if (operator.evaluate(info, v)) {
value[0] = v;
return true;
}
return false;
}
});
return value[0];
}
void clearDropTargets() {
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
if (v instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) v);
}
// not done, process all the shortcuts
return false;
}
});
}
/**
* Removes items that match the {@param matcher}. When applications are removed
* as a part of an update, this is called to ensure that other widgets and application
* shortcuts are not removed.
*/
public void removeItemsByMatcher(final ItemInfoMatcher matcher) {
ArrayList<CellLayout> cellLayouts = getWorkspaceAndHotseatCellLayouts();
for (final CellLayout layoutParent: cellLayouts) {
final ViewGroup layout = layoutParent.getShortcutsAndWidgets();
LongArrayMap<View> idToViewMap = new LongArrayMap<>();
ArrayList<ItemInfo> items = new ArrayList<>();
for (int j = 0; j < layout.getChildCount(); j++) {
final View view = layout.getChildAt(j);
if (view.getTag() instanceof ItemInfo) {
ItemInfo item = (ItemInfo) view.getTag();
items.add(item);
idToViewMap.put(item.id, view);
}
}
for (ItemInfo itemToRemove : matcher.filterItemInfos(items)) {
View child = idToViewMap.get(itemToRemove.id);
if (child != null) {
// Note: We can not remove the view directly from CellLayoutChildren as this
// does not re-mark the spaces as unoccupied.
layoutParent.removeViewInLayout(child);
if (child instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) child);
}
} else if (itemToRemove.container >= 0) {
// The item may belong to a folder.
View parent = idToViewMap.get(itemToRemove.container);
if (parent != null) {
FolderInfo folderInfo = (FolderInfo) parent.getTag();
folderInfo.prepareAutoUpdate();
folderInfo.remove((ShortcutInfo) itemToRemove, false);
}
}
}
}
// Strip all the empty screens
stripEmptyScreens();
}
public interface ItemOperator {
/**
* Process the next itemInfo, possibly with side-effect on the next item.
*
* @param info info for the shortcut
* @param view view for the shortcut
* @return true if done, false to continue the map
*/
boolean evaluate(ItemInfo info, View view);
}
/**
* Map the operator over the shortcuts and widgets, return the first-non-null value.
*
* @param recurse true: iterate over folder children. false: op get the folders themselves.
* @param op the operator to map over the shortcuts
*/
void mapOverItems(boolean recurse, ItemOperator op) {
ArrayList<ShortcutAndWidgetContainer> containers = getAllShortcutAndWidgetContainers();
final int containerCount = containers.size();
for (int containerIdx = 0; containerIdx < containerCount; containerIdx++) {
ShortcutAndWidgetContainer container = containers.get(containerIdx);
// map over all the shortcuts on the workspace
final int itemCount = container.getChildCount();
for (int itemIdx = 0; itemIdx < itemCount; itemIdx++) {
View item = container.getChildAt(itemIdx);
ItemInfo info = (ItemInfo) item.getTag();
if (recurse && info instanceof FolderInfo && item instanceof FolderIcon) {
FolderIcon folder = (FolderIcon) item;
ArrayList<View> folderChildren = folder.getFolder().getItemsInReadingOrder();
// map over all the children in the folder
final int childCount = folderChildren.size();
for (int childIdx = 0; childIdx < childCount; childIdx++) {
View child = folderChildren.get(childIdx);
info = (ItemInfo) child.getTag();
if (op.evaluate(info, child)) {
return;
}
}
} else {
if (op.evaluate(info, item)) {
return;
}
}
}
}
}
void updateShortcuts(ArrayList<ShortcutInfo> shortcuts) {
int total = shortcuts.size();
final HashSet<ShortcutInfo> updates = new HashSet<>(total);
final HashSet<Long> folderIds = new HashSet<>();
for (int i = 0; i < total; i++) {
ShortcutInfo s = shortcuts.get(i);
updates.add(s);
folderIds.add(s.container);
}
mapOverItems(MAP_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
if (info instanceof ShortcutInfo && v instanceof BubbleTextView &&
updates.contains(info)) {
ShortcutInfo si = (ShortcutInfo) info;
BubbleTextView shortcut = (BubbleTextView) v;
Drawable oldIcon = shortcut.getIcon();
boolean oldPromiseState = (oldIcon instanceof PreloadIconDrawable)
&& ((PreloadIconDrawable) oldIcon).hasNotCompleted();
shortcut.applyFromShortcutInfo(si, si.isPromise() != oldPromiseState);
}
// process all the shortcuts
return false;
}
});
// Update folder icons
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
if (info instanceof FolderInfo && folderIds.contains(info.id)) {
((FolderInfo) info).itemsChanged(false);
}
// process all the shortcuts
return false;
}
});
}
public void updateIconBadges(final Set<PackageUserKey> updatedBadges) {
final PackageUserKey packageUserKey = new PackageUserKey(null, null);
final HashSet<Long> folderIds = new HashSet<>();
mapOverItems(MAP_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
if (info instanceof ShortcutInfo && v instanceof BubbleTextView
&& packageUserKey.updateFromItemInfo(info)) {
if (updatedBadges.contains(packageUserKey)) {
((BubbleTextView) v).applyBadgeState(info, true /* animate */);
folderIds.add(info.container);
}
}
// process all the shortcuts
return false;
}
});
// Update folder icons
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
if (info instanceof FolderInfo && folderIds.contains(info.id)
&& v instanceof FolderIcon) {
FolderBadgeInfo folderBadgeInfo = new FolderBadgeInfo();
for (ShortcutInfo si : ((FolderInfo) info).contents) {
folderBadgeInfo.addBadgeInfo(mLauncher.getPopupDataProvider()
.getBadgeInfoForItem(si));
}
((FolderIcon) v).setBadgeInfo(folderBadgeInfo);
}
// process all the shortcuts
return false;
}
});
}
public void removeAbandonedPromise(String packageName, UserHandle user) {
HashSet<String> packages = new HashSet<>(1);
packages.add(packageName);
ItemInfoMatcher matcher = ItemInfoMatcher.ofPackages(packages, user);
mLauncher.getModelWriter().deleteItemsFromDatabase(matcher);
removeItemsByMatcher(matcher);
}
public void updateRestoreItems(final HashSet<ItemInfo> updates) {
mapOverItems(MAP_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View v) {
if (info instanceof ShortcutInfo && v instanceof BubbleTextView
&& updates.contains(info)) {
((BubbleTextView) v).applyPromiseState(false /* promiseStateChanged */);
} else if (v instanceof PendingAppWidgetHostView
&& info instanceof LauncherAppWidgetInfo
&& updates.contains(info)) {
((PendingAppWidgetHostView) v).applyState();
}
// process all the shortcuts
return false;
}
});
}
public void widgetsRestored(final ArrayList<LauncherAppWidgetInfo> changedInfo) {
if (!changedInfo.isEmpty()) {
DeferredWidgetRefresh widgetRefresh = new DeferredWidgetRefresh(changedInfo,
mLauncher.getAppWidgetHost());
LauncherAppWidgetInfo item = changedInfo.get(0);
final AppWidgetProviderInfo widgetInfo;
if (item.hasRestoreFlag(LauncherAppWidgetInfo.FLAG_ID_NOT_VALID)) {
widgetInfo = AppWidgetManagerCompat
.getInstance(mLauncher).findProvider(item.providerName, item.user);
} else {
widgetInfo = AppWidgetManagerCompat.getInstance(mLauncher)
.getLauncherAppWidgetInfo(item.appWidgetId);
}
if (widgetInfo != null) {
// Re-inflate the widgets which have changed status
widgetRefresh.run();
} else {
// widgetRefresh will automatically run when the packages are updated.
// For now just update the progress bars
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View view) {
if (view instanceof PendingAppWidgetHostView
&& changedInfo.contains(info)) {
((LauncherAppWidgetInfo) info).installProgress = 100;
((PendingAppWidgetHostView) view).applyState();
}
// process all the shortcuts
return false;
}
});
}
}
}
void moveToDefaultScreen() {
int page = DEFAULT_PAGE;
if (!workspaceInModalState() && getNextPage() != page) {
snapToPage(page);
}
View child = getChildAt(page);
if (child != null) {
child.requestFocus();
}
}
@Override
protected String getPageIndicatorDescription() {
return getResources().getString(R.string.all_apps_button_label);
}
@Override
protected String getCurrentPageDescription() {
int page = (mNextPage != INVALID_PAGE) ? mNextPage : mCurrentPage;
return getPageDescription(page);
}
private String getPageDescription(int page) {
int nScreens = getChildCount();
int extraScreenId = mScreenOrder.indexOf(EXTRA_EMPTY_SCREEN_ID);
if (extraScreenId >= 0 && nScreens > 1) {
if (page == extraScreenId) {
return getContext().getString(R.string.workspace_new_page);
}
nScreens--;
}
if (nScreens == 0) {
// When the workspace is not loaded, we do not know how many screen will be bound.
return getContext().getString(R.string.all_apps_home_button_label);
}
return getContext().getString(R.string.workspace_scroll_format, page + 1, nScreens);
}
@Override
public void fillInLogContainerData(View v, ItemInfo info, Target target, Target targetParent) {
target.gridX = info.cellX;
target.gridY = info.cellY;
target.pageIndex = getCurrentPage();
targetParent.containerType = ContainerType.WORKSPACE;
if (info.container == LauncherSettings.Favorites.CONTAINER_HOTSEAT) {
target.rank = info.rank;
targetParent.containerType = ContainerType.HOTSEAT;
} else if (info.container >= 0) {
targetParent.containerType = ContainerType.FOLDER;
}
}
@Override
public boolean enableFreeScroll() {
if (getState() == State.OVERVIEW) {
return super.enableFreeScroll();
} else {
Log.w(TAG, "enableFreeScroll called but not in overview: state=" + getState());
return false;
}
}
/**
* Used as a workaround to ensure that the AppWidgetService receives the
* PACKAGE_ADDED broadcast before updating widgets.
*/
private class DeferredWidgetRefresh implements Runnable, ProviderChangedListener {
private final ArrayList<LauncherAppWidgetInfo> mInfos;
private final LauncherAppWidgetHost mHost;
private final Handler mHandler;
private boolean mRefreshPending;
DeferredWidgetRefresh(ArrayList<LauncherAppWidgetInfo> infos,
LauncherAppWidgetHost host) {
mInfos = infos;
mHost = host;
mHandler = new Handler();
mRefreshPending = true;
mHost.addProviderChangeListener(this);
// Force refresh after 10 seconds, if we don't get the provider changed event.
// This could happen when the provider is no longer available in the app.
mHandler.postDelayed(this, 10000);
}
@Override
public void run() {
mHost.removeProviderChangeListener(this);
mHandler.removeCallbacks(this);
if (!mRefreshPending) {
return;
}
mRefreshPending = false;
mapOverItems(MAP_NO_RECURSE, new ItemOperator() {
@Override
public boolean evaluate(ItemInfo info, View view) {
if (view instanceof PendingAppWidgetHostView && mInfos.contains(info)) {
mLauncher.removeItem(view, info, false /* deleteFromDb */);
mLauncher.bindAppWidget((LauncherAppWidgetInfo) info);
}
// process all the shortcuts
return false;
}
});
}
@Override
public void notifyWidgetProvidersChanged() {
run();
}
}
private class StateTransitionListener extends AnimatorListenerAdapter
implements AnimatorUpdateListener {
@Override
public void onAnimationUpdate(ValueAnimator anim) {
mTransitionProgress = anim.getAnimatedFraction();
}
@Override
public void onAnimationStart(Animator animation) {
if (mState == State.SPRING_LOADED) {
// Show the page indicator at the same time as the rest of the transition.
showPageIndicatorAtCurrentScroll();
}
mTransitionProgress = 0;
}
@Override
public void onAnimationEnd(Animator animation) {
onEndStateTransition();
}
}
}
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