commit 6a71a5bd7787a2dc4a585e9e6ea0a440d0458a54
author Tony Wickham <twickham@google.com> Tue Aug 21 11:40:23 2018 -0700
committer Tony Wickham <twickham@google.com> Thu Aug 30 16:22:25 2018 -0700
tree b3bdc0c63c2540f57042c0d09d82786ec8d1869c
parent 1654c9e1c00cb41de392880adf7c3a5a558270b3

Add undo snackbar for deleting items

- Add methods to ModelWriter to prepareForUndoDelete, then
  enqueueDeleteRunnable, followed by commitDelete or abortDelete.
- Add Snackbar floating view
- Show Undo snackbar when dropping or flinging to delete target; if the
  undo action is clicked, we abort the delete, otherwise we commit it.

Bug: 24238108
Change-Id: I9997235e1f8525cbb8b1fa2338099609e7358426

src/com/android/launcher3/AbstractFloatingView.java

diff --git a/src/com/android/launcher3/AbstractFloatingView.java b/src/com/android/launcher3/AbstractFloatingView.java
index 1c07ea4..4fe6099 100644
--- a/src/com/android/launcher3/AbstractFloatingView.java
+++ b/src/com/android/launcher3/AbstractFloatingView.java
@@ -19,7 +19,6 @@
 import static android.view.accessibility.AccessibilityEvent.TYPE_VIEW_FOCUSED;
 import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_CONTENT_CHANGED;
 import static android.view.accessibility.AccessibilityEvent.TYPE_WINDOW_STATE_CHANGED;
-
 import static com.android.launcher3.compat.AccessibilityManagerCompat.isAccessibilityEnabled;
 import static com.android.launcher3.compat.AccessibilityManagerCompat.sendCustomAccessibilityEvent;
 
@@ -54,6 +53,7 @@
             TYPE_WIDGETS_FULL_SHEET,
             TYPE_ON_BOARD_POPUP,
             TYPE_DISCOVERY_BOUNCE,
+            TYPE_SNACKBAR,
 
             TYPE_QUICKSTEP_PREVIEW,
             TYPE_TASK_MENU,
@@ -68,23 +68,25 @@
     public static final int TYPE_WIDGETS_FULL_SHEET = 1 << 4;
     public static final int TYPE_ON_BOARD_POPUP = 1 << 5;
     public static final int TYPE_DISCOVERY_BOUNCE = 1 << 6;
+    public static final int TYPE_SNACKBAR = 1 << 7;
 
     // Popups related to quickstep UI
-    public static final int TYPE_QUICKSTEP_PREVIEW = 1 << 7;
-    public static final int TYPE_TASK_MENU = 1 << 8;
-    public static final int TYPE_OPTIONS_POPUP = 1 << 9;
+    public static final int TYPE_QUICKSTEP_PREVIEW = 1 << 8;
+    public static final int TYPE_TASK_MENU = 1 << 9;
+    public static final int TYPE_OPTIONS_POPUP = 1 << 10;
 
     public static final int TYPE_ALL = TYPE_FOLDER | TYPE_ACTION_POPUP
             | TYPE_WIDGETS_BOTTOM_SHEET | TYPE_WIDGET_RESIZE_FRAME | TYPE_WIDGETS_FULL_SHEET
             | TYPE_QUICKSTEP_PREVIEW | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE | TYPE_TASK_MENU
-            | TYPE_OPTIONS_POPUP;
+            | TYPE_OPTIONS_POPUP | TYPE_SNACKBAR;
 
     // Type of popups which should be kept open during launcher rebind
     public static final int TYPE_REBIND_SAFE = TYPE_WIDGETS_FULL_SHEET
             | TYPE_QUICKSTEP_PREVIEW | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE;
 
     // Usually we show the back button when a floating view is open. Instead, hide for these types.
-    public static final int TYPE_HIDE_BACK_BUTTON = TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE;
+    public static final int TYPE_HIDE_BACK_BUTTON = TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE
+            | TYPE_SNACKBAR;
 
     public static final int TYPE_ACCESSIBLE = TYPE_ALL
             & ~TYPE_DISCOVERY_BOUNCE & ~TYPE_QUICKSTEP_PREVIEW;