Remove hardcoded itemTypes from SearchTarget

- Introduces componentName and userHandle members to SearchTarget
- SearchTargetEvent now has searchTarget member
- Builder pattern for SearchTarget and SearchTargetEvent
- Search backend should add headers manually instead of launcher inferring sections

Bug: 171026321
Test: Manual
Change-Id: I28e0455e82b925277a17703b9aa061c8f9f15262

src_plugins/com/android/systemui/plugins/shared/SearchTargetEvent.java

@@ -15,32 +15,76 @@
  */
 package com.android.systemui.plugins.shared;
 
-import android.app.RemoteAction;
-import android.content.pm.ShortcutInfo;
 import android.os.Bundle;
 
 /**
  * Event used for the feedback loop to the plugin. (and future aiai)
  */
 public class SearchTargetEvent {
+    public static final int POSITION_NONE = -1;
+
     public static final int SELECT = 0;
     public static final int QUICK_SELECT = 1;
     public static final int LONG_PRESS = 2;
     public static final int CHILD_SELECT = 3;
 
-    public SearchTarget.ItemType type;
-    public ShortcutInfo shortcut;
-    public RemoteAction remoteAction;
-    public int eventType;
-    public Bundle bundle;
-    public int index;
-    public String sessionIdentifier;
+    private final SearchTarget mSearchTarget;
+    private final int mEventType;
+    private final int mShortcutPosition;
+    private final Bundle mExtras;
 
-    public SearchTargetEvent(SearchTarget.ItemType itemType, int eventType, int index,
-            String sessionId) {
-        this.type = itemType;
-        this.eventType = eventType;
-        this.index = index;
-        this.sessionIdentifier = sessionId;
+    public SearchTargetEvent(SearchTarget searchTarget, int eventType, int shortcutPosition,
+            Bundle extras) {
+        mSearchTarget = searchTarget;
+        mEventType = eventType;
+        mShortcutPosition = shortcutPosition;
+        mExtras = extras;
     }
+
+
+    public SearchTarget getSearchTarget() {
+        return mSearchTarget;
+    }
+
+    public int getShortcutPosition() {
+        return mShortcutPosition;
+    }
+
+    public int getEventType() {
+        return mEventType;
+    }
+
+    public Bundle getExtras() {
+        return mExtras;
+    }
+
+    /**
+     * A builder for {@link SearchTarget}
+     */
+    public static final class Builder {
+        private final SearchTarget mSearchTarget;
+        private final int mEventType;
+        private int mShortcutPosition = POSITION_NONE;
+        private Bundle mExtras;
+
+        public Builder(SearchTarget searchTarget, int eventType) {
+            mSearchTarget = searchTarget;
+            mEventType = eventType;
+        }
+
+        public Builder setShortcutPosition(int shortcutPosition) {
+            mShortcutPosition = shortcutPosition;
+            return this;
+        }
+
+        public Builder setExtras(Bundle extras) {
+            mExtras = extras;
+            return this;
+        }
+
+        public SearchTargetEvent build() {
+            return new SearchTargetEvent(mSearchTarget, mEventType, mShortcutPosition, mExtras);
+        }
+    }
+
 }