From c911c3da724eb5fb9f91be907c01b6bbc308b9d5 Mon Sep 17 00:00:00 2001
From: Vadim Tryshev <vadimt@google.com>
Date: Wed, 21 Mar 2018 16:40:13 -0700
Subject: [PATCH] Dismissing tasks via keyboard

Bug: 73090995
Test: Press all Del buttons on keyboard, backspace, while in or not in
Alt-Tab.

Change-Id: I22f99c46adbc465373989c58ed831e32fc8e2ba5
---
 .../android/quickstep/TaskSystemShortcut.java | 13 +---------
 .../android/quickstep/views/RecentsView.java  | 26 +++++++++++++++++++
 2 files changed, 27 insertions(+), 12 deletions(-)

diff --git a/quickstep/src/com/android/quickstep/TaskSystemShortcut.java b/quickstep/src/com/android/quickstep/TaskSystemShortcut.java
index 08be0c8f2e..2ebf2525f5 100644
--- a/quickstep/src/com/android/quickstep/TaskSystemShortcut.java
+++ b/quickstep/src/com/android/quickstep/TaskSystemShortcut.java
@@ -16,8 +16,6 @@
 
 package com.android.quickstep;
 
-import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
-
 import android.content.ComponentName;
 import android.content.Intent;
 import android.graphics.Bitmap;
@@ -37,7 +35,6 @@ import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.ItemInfo;
 import com.android.launcher3.R;
 import com.android.launcher3.ShortcutInfo;
-import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.popup.SystemShortcut;
 import com.android.launcher3.util.InstantAppResolver;
 import com.android.quickstep.views.RecentsView;
@@ -62,7 +59,6 @@ import java.util.function.Consumer;
 public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut {
 
     private static final String TAG = "TaskSystemShortcut";
-    private static final int DISMISS_TASK_DURATION = 300;
 
     protected T mSystemShortcut;
 
@@ -206,14 +202,7 @@ public class TaskSystemShortcut<T extends SystemShortcut> extends SystemShortcut
             mRecentsView.removeIgnoreResetTask(mTaskView);
 
             // Start animating in the side pages once launcher has been resized
-            PendingAnimation pendingAnim = mRecentsView.createTaskDismissAnimation(mTaskView,
-                    false, false, DISMISS_TASK_DURATION);
-            AnimatorPlaybackController controller = AnimatorPlaybackController.wrap(
-                    pendingAnim.anim, DISMISS_TASK_DURATION);
-            controller.dispatchOnStart();
-            controller.setEndAction(() -> pendingAnim.finish(true));
-            controller.getAnimationPlayer().setInterpolator(FAST_OUT_SLOW_IN);
-            controller.start();
+            mRecentsView.dismissTask(mTaskView, false, false);
         }
     }
 
diff --git a/quickstep/src/com/android/quickstep/views/RecentsView.java b/quickstep/src/com/android/quickstep/views/RecentsView.java
index db82286079..c7563b700a 100644
--- a/quickstep/src/com/android/quickstep/views/RecentsView.java
+++ b/quickstep/src/com/android/quickstep/views/RecentsView.java
@@ -18,6 +18,7 @@ package com.android.quickstep.views;
 
 import static com.android.launcher3.anim.Interpolators.ACCEL;
 import static com.android.launcher3.anim.Interpolators.ACCEL_2;
+import static com.android.launcher3.anim.Interpolators.FAST_OUT_SLOW_IN;
 import static com.android.launcher3.anim.Interpolators.LINEAR;
 
 import android.animation.AnimatorSet;
@@ -42,6 +43,7 @@ import com.android.launcher3.DeviceProfile;
 import com.android.launcher3.PagedView;
 import com.android.launcher3.R;
 import com.android.launcher3.Utilities;
+import com.android.launcher3.anim.AnimatorPlaybackController;
 import com.android.launcher3.config.FeatureFlags;
 import com.android.quickstep.PendingAnimation;
 import com.android.quickstep.QuickScrubController;
@@ -65,6 +67,7 @@ public abstract class RecentsView<T extends BaseActivity>
         extends PagedView implements OnSharedPreferenceChangeListener {
 
     private static final String PREF_FLIP_RECENTS = "pref_flip_recents";
+    private static final int DISMISS_TASK_DURATION = 300;
 
     private static final Rect sTempStableInsets = new Rect();
 
@@ -623,6 +626,17 @@ public abstract class RecentsView<T extends BaseActivity>
         }
     }
 
+    public void dismissTask(TaskView taskView, boolean animateTaskView, boolean removeTask) {
+        PendingAnimation pendingAnim = createTaskDismissAnimation(taskView, animateTaskView,
+                removeTask, DISMISS_TASK_DURATION);
+        AnimatorPlaybackController controller = AnimatorPlaybackController.wrap(
+                pendingAnim.anim, DISMISS_TASK_DURATION);
+        controller.dispatchOnStart();
+        controller.setEndAction(() -> pendingAnim.finish(true));
+        controller.getAnimationPlayer().setInterpolator(FAST_OUT_SLOW_IN);
+        controller.start();
+    }
+
     @Override
     public boolean dispatchKeyEvent(KeyEvent event) {
         if (event.getAction() == KeyEvent.ACTION_DOWN) {
@@ -636,6 +650,18 @@ public abstract class RecentsView<T extends BaseActivity>
                 case KeyEvent.KEYCODE_DPAD_LEFT:
                     snapToPageRelative(mIsRtl ? 1 : -1);
                     return true;
+                case KeyEvent.KEYCODE_DEL:
+                case KeyEvent.KEYCODE_FORWARD_DEL:
+                    dismissTask((TaskView) getChildAt(getNextPage()), true /*animateTaskView*/,
+                            true /*removeTask*/);
+                    return true;
+                case KeyEvent.KEYCODE_NUMPAD_DOT:
+                    if (event.isAltPressed()) {
+                        // Numpad DEL pressed while holding Alt.
+                        dismissTask((TaskView) getChildAt(getNextPage()), true /*animateTaskView*/,
+                                true /*removeTask*/);
+                        return true;
+                    }
             }
         }
         return super.dispatchKeyEvent(event);