Merge "Allow overriding DragController and drag use cases" into tm-qpr-dev

src/com/android/launcher3/Launcher.java

@@ -305,7 +305,6 @@ public class Launcher extends StatefulActivity<LauncherState>
     Workspace<?> mWorkspace;
     @Thunk
     DragLayer mDragLayer;
-    private DragController mDragController;
 
     private WidgetManagerHelper mAppWidgetManager;
     private LauncherAppWidgetHost mAppWidgetHost;
@@ -369,6 +368,7 @@ public class Launcher extends StatefulActivity<LauncherState>
     private RotationHelper mRotationHelper;
 
     protected LauncherOverlayManager mOverlayManager;
+    protected DragController mDragController;
     // If true, overlay callbacks are deferred
     private boolean mDeferOverlayCallbacks;
     private final Runnable mDeferredOverlayCallbacks = this::checkIfOverlayStillDeferred;
@@ -465,7 +465,7 @@ public class Launcher extends StatefulActivity<LauncherState>
         mIconCache = app.getIconCache();
         mAccessibilityDelegate = createAccessibilityDelegate();
 
-        mDragController = new LauncherDragController(this);
+        initDragController();
         mAllAppsController = new AllAppsTransitionController(this);
         mStateManager = new StateManager<>(this, NORMAL);
 
@@ -614,6 +614,13 @@ public class Launcher extends StatefulActivity<LauncherState>
         super.onConfigurationChanged(newConfig);
     }
 
+    /**
+     * Initializes the drag controller.
+     */
+    protected void initDragController() {
+        mDragController = new LauncherDragController(this);
+    }
+
     @Override
     public void onIdpChanged(boolean modelPropertiesChanged) {
         initDeviceProfile(mDeviceProfile.inv);

src/com/android/launcher3/Workspace.java

@@ -159,7 +159,7 @@ public class Workspace<T extends View & PageIndicator> extends PagedView<T>
     private LayoutTransition mLayoutTransition;
     @Thunk final WallpaperManager mWallpaperManager;
 
-    private ShortcutAndWidgetContainer mDragSourceInternal;
+    protected ShortcutAndWidgetContainer mDragSourceInternal;
 
     @Thunk final IntSparseArrayMap<CellLayout> mWorkspaceScreens = new IntSparseArrayMap<>();
     @Thunk final IntArray mScreenOrder = new IntArray();
@@ -195,7 +195,7 @@ public class Workspace<T extends View & PageIndicator> extends PagedView<T>
     @Thunk final Launcher mLauncher;
     @Thunk DragController mDragController;
 
-    private final int[] mTempXY = new int[2];
+    protected final int[] mTempXY = new int[2];
     private final float[] mTempFXY = new float[2];
     private final Rect mTempRect = new Rect();
     @Thunk float[] mDragViewVisualCenter = new float[2];