mirror of
https://github.com/LawnchairLauncher/lawnchair.git
synced 2026-02-18 02:08:20 +00:00
558 lines
22 KiB
Java
558 lines
22 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.launcher3.allapps;
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import android.content.Context;
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import android.content.Intent;
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import android.content.res.Resources;
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import android.graphics.Canvas;
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import android.graphics.Paint;
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import android.graphics.Point;
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import android.graphics.PointF;
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import android.graphics.Rect;
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import android.support.v4.view.accessibility.AccessibilityEventCompat;
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import android.support.v4.view.accessibility.AccessibilityRecordCompat;
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import android.support.v7.widget.GridLayoutManager;
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import android.support.v7.widget.RecyclerView;
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import android.view.Gravity;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.View.OnFocusChangeListener;
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import android.view.ViewConfiguration;
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import android.view.ViewGroup;
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import android.view.accessibility.AccessibilityEvent;
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import android.widget.TextView;
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import com.android.launcher3.AppInfo;
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import com.android.launcher3.BubbleTextView;
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import com.android.launcher3.CellLayout;
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import com.android.launcher3.DeviceProfile;
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import com.android.launcher3.Launcher;
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import com.android.launcher3.R;
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import com.android.launcher3.Utilities;
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import com.android.launcher3.shortcuts.DeepShortcutManager;
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import com.android.launcher3.shortcuts.ShortcutsContainerListener;
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import java.util.HashMap;
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import java.util.List;
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/**
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* The grid view adapter of all the apps.
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*/
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public class AllAppsGridAdapter extends RecyclerView.Adapter<AllAppsGridAdapter.ViewHolder> {
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public static final String TAG = "AppsGridAdapter";
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private static final boolean DEBUG = false;
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// A section break in the grid
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public static final int VIEW_TYPE_SECTION_BREAK = 1 << 0;
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// A normal icon
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public static final int VIEW_TYPE_ICON = 1 << 1;
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// A prediction icon
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public static final int VIEW_TYPE_PREDICTION_ICON = 1 << 2;
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// The message shown when there are no filtered results
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public static final int VIEW_TYPE_EMPTY_SEARCH = 1 << 3;
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// The message to continue to a market search when there are no filtered results
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public static final int VIEW_TYPE_SEARCH_MARKET = 1 << 4;
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// We use various dividers for various purposes. They share enough attributes to reuse layouts,
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// but differ in enough attributes to require different view types
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// A divider that separates the apps list and the search market button
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public static final int VIEW_TYPE_SEARCH_MARKET_DIVIDER = 1 << 5;
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// The divider under the search field
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public static final int VIEW_TYPE_SEARCH_DIVIDER = 1 << 6;
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// The divider that separates prediction icons from the app list
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public static final int VIEW_TYPE_PREDICTION_DIVIDER = 1 << 7;
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// Common view type masks
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public static final int VIEW_TYPE_MASK_DIVIDER = VIEW_TYPE_SEARCH_DIVIDER
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| VIEW_TYPE_SEARCH_MARKET_DIVIDER
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| VIEW_TYPE_PREDICTION_DIVIDER
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| VIEW_TYPE_SECTION_BREAK;
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public static final int VIEW_TYPE_MASK_ICON = VIEW_TYPE_ICON
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| VIEW_TYPE_PREDICTION_ICON;
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public interface BindViewCallback {
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public void onBindView(ViewHolder holder);
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}
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/**
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* ViewHolder for each icon.
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*/
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public static class ViewHolder extends RecyclerView.ViewHolder {
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public View mContent;
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public ViewHolder(View v) {
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super(v);
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mContent = v;
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}
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}
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/**
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* A subclass of GridLayoutManager that overrides accessibility values during app search.
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*/
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public class AppsGridLayoutManager extends GridLayoutManager {
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public AppsGridLayoutManager(Context context) {
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super(context, 1, GridLayoutManager.VERTICAL, false);
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}
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@Override
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public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
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super.onInitializeAccessibilityEvent(event);
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// Ensure that we only report the number apps for accessibility not including other
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// adapter views
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final AccessibilityRecordCompat record = AccessibilityEventCompat
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.asRecord(event);
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record.setItemCount(mApps.getNumFilteredApps());
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}
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@Override
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public int getRowCountForAccessibility(RecyclerView.Recycler recycler,
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RecyclerView.State state) {
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if (mApps.hasNoFilteredResults()) {
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// Disregard the no-search-results text as a list item for accessibility
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return 0;
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} else {
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return super.getRowCountForAccessibility(recycler, state);
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}
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}
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}
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/**
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* Helper class to size the grid items.
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*/
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public class GridSpanSizer extends GridLayoutManager.SpanSizeLookup {
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public GridSpanSizer() {
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super();
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setSpanIndexCacheEnabled(true);
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}
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@Override
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public int getSpanSize(int position) {
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if (isIconViewType(mApps.getAdapterItems().get(position).viewType)) {
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return 1;
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} else {
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// Section breaks span the full width
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return mAppsPerRow;
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}
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}
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}
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/**
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* Helper class to draw the section headers
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*/
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public class GridItemDecoration extends RecyclerView.ItemDecoration {
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private static final boolean DEBUG_SECTION_MARGIN = false;
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private static final boolean FADE_OUT_SECTIONS = false;
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private HashMap<String, PointF> mCachedSectionBounds = new HashMap<>();
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private Rect mTmpBounds = new Rect();
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@Override
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public void onDraw(Canvas c, RecyclerView parent, RecyclerView.State state) {
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if (mApps.hasFilter() || mAppsPerRow == 0) {
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return;
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}
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if (DEBUG_SECTION_MARGIN) {
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Paint p = new Paint();
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p.setColor(0x33ff0000);
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c.drawRect(mBackgroundPadding.left, 0, mBackgroundPadding.left + mSectionNamesMargin,
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parent.getMeasuredHeight(), p);
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}
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List<AlphabeticalAppsList.AdapterItem> items = mApps.getAdapterItems();
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boolean showSectionNames = mSectionNamesMargin > 0;
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int childCount = parent.getChildCount();
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int lastSectionTop = 0;
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int lastSectionHeight = 0;
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for (int i = 0; i < childCount; i++) {
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View child = parent.getChildAt(i);
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ViewHolder holder = (ViewHolder) parent.getChildViewHolder(child);
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if (!isValidHolderAndChild(holder, child, items)) {
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continue;
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}
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if (showSectionNames && shouldDrawItemSection(holder, i, items)) {
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// At this point, we only draw sections for each section break;
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int viewTopOffset = (2 * child.getPaddingTop());
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int pos = holder.getPosition();
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AlphabeticalAppsList.AdapterItem item = items.get(pos);
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AlphabeticalAppsList.SectionInfo sectionInfo = item.sectionInfo;
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// Draw all the sections for this index
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String lastSectionName = item.sectionName;
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for (int j = item.sectionAppIndex; j < sectionInfo.numApps; j++, pos++) {
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AlphabeticalAppsList.AdapterItem nextItem = items.get(pos);
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String sectionName = nextItem.sectionName;
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if (nextItem.sectionInfo != sectionInfo) {
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break;
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}
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if (j > item.sectionAppIndex && sectionName.equals(lastSectionName)) {
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continue;
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}
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// Find the section name bounds
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PointF sectionBounds = getAndCacheSectionBounds(sectionName);
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// Calculate where to draw the section
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int sectionBaseline = (int) (viewTopOffset + sectionBounds.y);
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int x = mIsRtl ?
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parent.getWidth() - mBackgroundPadding.left - mSectionNamesMargin :
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mBackgroundPadding.left;
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x += (int) ((mSectionNamesMargin - sectionBounds.x) / 2f);
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int y = child.getTop() + sectionBaseline;
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// Determine whether this is the last row with apps in that section, if
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// so, then fix the section to the row allowing it to scroll past the
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// baseline, otherwise, bound it to the baseline so it's in the viewport
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int appIndexInSection = items.get(pos).sectionAppIndex;
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int nextRowPos = Math.min(items.size() - 1,
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pos + mAppsPerRow - (appIndexInSection % mAppsPerRow));
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AlphabeticalAppsList.AdapterItem nextRowItem = items.get(nextRowPos);
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boolean fixedToRow = !sectionName.equals(nextRowItem.sectionName);
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if (!fixedToRow) {
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y = Math.max(sectionBaseline, y);
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}
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// In addition, if it overlaps with the last section that was drawn, then
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// offset it so that it does not overlap
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if (lastSectionHeight > 0 && y <= (lastSectionTop + lastSectionHeight)) {
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y += lastSectionTop - y + lastSectionHeight;
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}
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// Draw the section header
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if (FADE_OUT_SECTIONS) {
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int alpha = 255;
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if (fixedToRow) {
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alpha = Math.min(255,
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(int) (255 * (Math.max(0, y) / (float) sectionBaseline)));
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}
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mSectionTextPaint.setAlpha(alpha);
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}
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c.drawText(sectionName, x, y, mSectionTextPaint);
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lastSectionTop = y;
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lastSectionHeight = (int) (sectionBounds.y + mSectionHeaderOffset);
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lastSectionName = sectionName;
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}
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i += (sectionInfo.numApps - item.sectionAppIndex);
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}
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}
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}
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@Override
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public void getItemOffsets(Rect outRect, View view, RecyclerView parent,
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RecyclerView.State state) {
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// Do nothing
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}
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/**
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* Given a section name, return the bounds of the given section name.
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*/
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private PointF getAndCacheSectionBounds(String sectionName) {
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PointF bounds = mCachedSectionBounds.get(sectionName);
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if (bounds == null) {
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mSectionTextPaint.getTextBounds(sectionName, 0, sectionName.length(), mTmpBounds);
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bounds = new PointF(mSectionTextPaint.measureText(sectionName), mTmpBounds.height());
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mCachedSectionBounds.put(sectionName, bounds);
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}
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return bounds;
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}
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/**
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* Returns whether we consider this a valid view holder for us to draw a divider or section for.
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*/
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private boolean isValidHolderAndChild(ViewHolder holder, View child,
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List<AlphabeticalAppsList.AdapterItem> items) {
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// Ensure item is not already removed
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GridLayoutManager.LayoutParams lp = (GridLayoutManager.LayoutParams)
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child.getLayoutParams();
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if (lp.isItemRemoved()) {
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return false;
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}
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// Ensure we have a valid holder
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if (holder == null) {
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return false;
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}
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// Ensure we have a holder position
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int pos = holder.getPosition();
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if (pos < 0 || pos >= items.size()) {
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return false;
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}
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return true;
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}
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/**
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* Returns whether to draw the section for the given child.
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*/
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private boolean shouldDrawItemSection(ViewHolder holder, int childIndex,
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List<AlphabeticalAppsList.AdapterItem> items) {
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int pos = holder.getPosition();
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AlphabeticalAppsList.AdapterItem item = items.get(pos);
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// Ensure it's an icon
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if (item.viewType != AllAppsGridAdapter.VIEW_TYPE_ICON) {
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return false;
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}
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// Draw the section header for the first item in each section
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return (childIndex == 0) ||
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(items.get(pos - 1).viewType == AllAppsGridAdapter.VIEW_TYPE_SECTION_BREAK);
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}
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}
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private final Launcher mLauncher;
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private final LayoutInflater mLayoutInflater;
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private final AlphabeticalAppsList mApps;
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private final GridLayoutManager mGridLayoutMgr;
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private final GridSpanSizer mGridSizer;
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private final GridItemDecoration mItemDecoration;
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private final View.OnClickListener mIconClickListener;
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private final View.OnLongClickListener mIconLongClickListener;
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private final Rect mBackgroundPadding = new Rect();
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private final boolean mIsRtl;
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// Section drawing
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@Deprecated
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private final int mSectionNamesMargin;
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@Deprecated
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private final int mSectionHeaderOffset;
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private final Paint mSectionTextPaint;
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private int mAppsPerRow;
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private BindViewCallback mBindViewCallback;
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private AllAppsSearchBarController mSearchController;
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private OnFocusChangeListener mIconFocusListener;
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// The text to show when there are no search results and no market search handler.
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private String mEmptySearchMessage;
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// The intent to send off to the market app, updated each time the search query changes.
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private Intent mMarketSearchIntent;
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public AllAppsGridAdapter(Launcher launcher, AlphabeticalAppsList apps, View.OnClickListener
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iconClickListener, View.OnLongClickListener iconLongClickListener) {
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Resources res = launcher.getResources();
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mLauncher = launcher;
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mApps = apps;
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mEmptySearchMessage = res.getString(R.string.all_apps_loading_message);
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mGridSizer = new GridSpanSizer();
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mGridLayoutMgr = new AppsGridLayoutManager(launcher);
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mGridLayoutMgr.setSpanSizeLookup(mGridSizer);
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mItemDecoration = new GridItemDecoration();
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mLayoutInflater = LayoutInflater.from(launcher);
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mIconClickListener = iconClickListener;
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mIconLongClickListener = iconLongClickListener;
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mSectionNamesMargin = res.getDimensionPixelSize(R.dimen.all_apps_grid_view_start_margin);
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mSectionHeaderOffset = res.getDimensionPixelSize(R.dimen.all_apps_grid_section_y_offset);
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mIsRtl = Utilities.isRtl(res);
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mSectionTextPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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mSectionTextPaint.setTextSize(res.getDimensionPixelSize(
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R.dimen.all_apps_grid_section_text_size));
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mSectionTextPaint.setColor(Utilities.getColorAccent(launcher));
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}
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public static boolean isDividerViewType(int viewType) {
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return isViewType(viewType, VIEW_TYPE_MASK_DIVIDER);
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}
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public static boolean isIconViewType(int viewType) {
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return isViewType(viewType, VIEW_TYPE_MASK_ICON);
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}
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public static boolean isViewType(int viewType, int viewTypeMask) {
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return (viewType & viewTypeMask) != 0;
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}
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/**
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* Sets the number of apps per row.
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*/
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public void setNumAppsPerRow(int appsPerRow) {
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mAppsPerRow = appsPerRow;
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mGridLayoutMgr.setSpanCount(appsPerRow);
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}
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public void setSearchController(AllAppsSearchBarController searchController) {
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mSearchController = searchController;
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}
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public void setIconFocusListener(OnFocusChangeListener focusListener) {
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mIconFocusListener = focusListener;
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}
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/**
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* Sets the last search query that was made, used to show when there are no results and to also
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* seed the intent for searching the market.
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*/
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public void setLastSearchQuery(String query) {
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Resources res = mLauncher.getResources();
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mEmptySearchMessage = res.getString(R.string.all_apps_no_search_results, query);
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mMarketSearchIntent = mSearchController.createMarketSearchIntent(query);
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}
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/**
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* Sets the callback for when views are bound.
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*/
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public void setBindViewCallback(BindViewCallback cb) {
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mBindViewCallback = cb;
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}
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/**
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* Notifies the adapter of the background padding so that it can draw things correctly in the
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* item decorator.
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*/
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public void updateBackgroundPadding(Rect padding) {
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mBackgroundPadding.set(padding);
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}
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/**
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* Returns the grid layout manager.
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*/
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public GridLayoutManager getLayoutManager() {
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return mGridLayoutMgr;
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}
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/**
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* Returns the item decoration for the recycler view.
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*/
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public RecyclerView.ItemDecoration getItemDecoration() {
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// We don't draw any headers when we are uncomfortably dense
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return mItemDecoration;
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}
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@Override
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public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
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switch (viewType) {
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case VIEW_TYPE_SECTION_BREAK:
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return new ViewHolder(new View(parent.getContext()));
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case VIEW_TYPE_ICON:
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/* falls through */
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case VIEW_TYPE_PREDICTION_ICON: {
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BubbleTextView icon = (BubbleTextView) mLayoutInflater.inflate(
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R.layout.all_apps_icon, parent, false);
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icon.setOnClickListener(mIconClickListener);
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icon.setOnLongClickListener(mIconLongClickListener);
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icon.setLongPressTimeout(ViewConfiguration.get(parent.getContext())
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.getLongPressTimeout());
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icon.setOnFocusChangeListener(mIconFocusListener);
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// Ensure the all apps icon height matches the workspace icons
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DeviceProfile profile = mLauncher.getDeviceProfile();
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Point cellSize = profile.getCellSize();
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GridLayoutManager.LayoutParams lp =
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(GridLayoutManager.LayoutParams) icon.getLayoutParams();
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lp.height = cellSize.y;
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icon.setLayoutParams(lp);
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return new ViewHolder(icon);
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}
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case VIEW_TYPE_EMPTY_SEARCH:
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return new ViewHolder(mLayoutInflater.inflate(R.layout.all_apps_empty_search,
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parent, false));
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case VIEW_TYPE_SEARCH_MARKET:
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View searchMarketView = mLayoutInflater.inflate(R.layout.all_apps_search_market,
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parent, false);
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searchMarketView.setOnClickListener(new View.OnClickListener() {
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@Override
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public void onClick(View v) {
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mLauncher.startActivitySafely(v, mMarketSearchIntent, null);
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}
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});
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return new ViewHolder(searchMarketView);
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case VIEW_TYPE_SEARCH_DIVIDER:
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return new ViewHolder(mLayoutInflater.inflate(
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R.layout.all_apps_search_divider, parent, false));
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case VIEW_TYPE_PREDICTION_DIVIDER:
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/* falls through */
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case VIEW_TYPE_SEARCH_MARKET_DIVIDER:
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return new ViewHolder(mLayoutInflater.inflate(
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R.layout.all_apps_divider, parent, false));
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default:
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throw new RuntimeException("Unexpected view type");
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}
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}
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@Override
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public void onBindViewHolder(ViewHolder holder, int position) {
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switch (holder.getItemViewType()) {
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case VIEW_TYPE_ICON: {
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AppInfo info = mApps.getAdapterItems().get(position).appInfo;
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BubbleTextView icon = (BubbleTextView) holder.mContent;
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icon.applyFromApplicationInfo(info);
|
|
if (DeepShortcutManager.supportsShortcuts(info)) {
|
|
// TODO: only add this listener if the item has shortcuts associated with it.
|
|
icon.setOnTouchListener(new ShortcutsContainerListener(icon));
|
|
}
|
|
icon.setAccessibilityDelegate(mLauncher.getAccessibilityDelegate());
|
|
break;
|
|
}
|
|
case VIEW_TYPE_PREDICTION_ICON: {
|
|
AppInfo info = mApps.getAdapterItems().get(position).appInfo;
|
|
BubbleTextView icon = (BubbleTextView) holder.mContent;
|
|
icon.applyFromApplicationInfo(info);
|
|
if (DeepShortcutManager.supportsShortcuts(info)) {
|
|
// TODO: only add this listener if the item has shortcuts associated with it.
|
|
icon.setOnTouchListener(new ShortcutsContainerListener(icon));
|
|
}
|
|
icon.setAccessibilityDelegate(mLauncher.getAccessibilityDelegate());
|
|
break;
|
|
}
|
|
case VIEW_TYPE_EMPTY_SEARCH:
|
|
TextView emptyViewText = (TextView) holder.mContent;
|
|
emptyViewText.setText(mEmptySearchMessage);
|
|
emptyViewText.setGravity(mApps.hasNoFilteredResults() ? Gravity.CENTER :
|
|
Gravity.START | Gravity.CENTER_VERTICAL);
|
|
break;
|
|
case VIEW_TYPE_SEARCH_MARKET:
|
|
TextView searchView = (TextView) holder.mContent;
|
|
if (mMarketSearchIntent != null) {
|
|
searchView.setVisibility(View.VISIBLE);
|
|
} else {
|
|
searchView.setVisibility(View.GONE);
|
|
}
|
|
break;
|
|
}
|
|
if (mBindViewCallback != null) {
|
|
mBindViewCallback.onBindView(holder);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public boolean onFailedToRecycleView(ViewHolder holder) {
|
|
// Always recycle and we will reset the view when it is bound
|
|
return true;
|
|
}
|
|
|
|
@Override
|
|
public int getItemCount() {
|
|
return mApps.getAdapterItems().size();
|
|
}
|
|
|
|
@Override
|
|
public int getItemViewType(int position) {
|
|
AlphabeticalAppsList.AdapterItem item = mApps.getAdapterItems().get(position);
|
|
return item.viewType;
|
|
}
|
|
}
|