Refactor LauncherAppTransitionManager & polish for new app transitions.

* Add start delay when launcher resumes from all apps or landscape.
* Track the last app transition animator and cancel it before beginning a new one,
  otherwise the animators can conflict with each other.
  ie. Opening an app from all apps and then immediately pressing back to return to
      all apps.
* Use class overrride instead of UiFactory.

Bug: 70220260
Change-Id: I4755d45d820f9d551e443d6c4a148e8789c5bc57

src/com/android/launcher3/Launcher.java

@@ -214,6 +214,8 @@ public class Launcher extends BaseActivity
     private static final int NEW_APPS_ANIMATION_INACTIVE_TIMEOUT_SECONDS = 5;
     @Thunk static final int NEW_APPS_ANIMATION_DELAY = 500;
 
+    private LauncherAppTransitionManager mAppTransitionManager;
+
     @Thunk Workspace mWorkspace;
     private View mLauncherView;
     @Thunk DragLayer mDragLayer;
@@ -403,8 +405,11 @@ public class Launcher extends BaseActivity
         getSystemUiController().updateUiState(SystemUiController.UI_STATE_BASE_WINDOW,
                 Themes.getAttrBoolean(this, R.attr.isWorkspaceDarkText));
 
+        mAppTransitionManager = Utilities.getOverrideObject(LauncherAppTransitionManager.class,
+                        this, R.string.app_transition_manager_class);
+
         if (!isInMultiWindowModeCompat()) {
-            UiFactory.registerRemoteAnimations(this);
+            mAppTransitionManager.registerRemoteAnimations();
         }
 
         if (mLauncherCallbacks != null) {
@@ -1918,38 +1923,11 @@ public class Launcher extends BaseActivity
         }
     }
 
-    public Bundle getDefaultActivityLaunchOptions(View v) {
-        if (Utilities.ATLEAST_MARSHMALLOW) {
-            int left = 0, top = 0;
-            int width = v.getMeasuredWidth(), height = v.getMeasuredHeight();
-            if (v instanceof BubbleTextView) {
-                // Launch from center of icon, not entire view
-                Drawable icon = ((BubbleTextView) v).getIcon();
-                if (icon != null) {
-                    Rect bounds = icon.getBounds();
-                    left = (width - bounds.width()) / 2;
-                    top = v.getPaddingTop();
-                    width = bounds.width();
-                    height = bounds.height();
-                }
-            }
-            return ActivityOptions.makeClipRevealAnimation(v, left, top, width, height)
-                    .toBundle();
-        } else if (Utilities.ATLEAST_LOLLIPOP_MR1) {
-            // On L devices, we use the device default slide-up transition.
-            // On L MR1 devices, we use a custom version of the slide-up transition which
-            // doesn't have the delay present in the device default.
-            return ActivityOptions.makeCustomAnimation(
-                    this, R.anim.task_open_enter, R.anim.no_anim).toBundle();
-        }
-        return null;
-    }
-
     @TargetApi(Build.VERSION_CODES.M)
     public Bundle getActivityLaunchOptions(View v, boolean useDefaultLaunchOptions) {
         return useDefaultLaunchOptions
-                ? getDefaultActivityLaunchOptions(v)
-                : UiFactory.getActivityLaunchOptions(this, v);
+                ? mAppTransitionManager.getDefaultActivityLaunchOptions(this, v)
+                : mAppTransitionManager.getActivityLaunchOptions(this, v);
     }
 
     public Rect getViewBounds(View v) {