Updating the ui for widget restore flow

> Pending widget show a PreloadIconDrawable to indicate
installation progress
> Only the concerned widgets are reinflated on package
install and not the whole workspace.
> Adding support for storing default package icon in
IconCache

issue: 10779035
issue: 16737660

Change-Id: Id787ae4a5ef72d6e01aeb5a1bae5ab8840037679

1 files changed, 16 insertions, 0 deletions

diff --git a/src/com/android/launcher3/LauncherAppWidgetHost.java b/src/com/android/launcher3/LauncherAppWidgetHost.java
index fa5e38f8b..a309f268c 100644
--- a/src/com/android/launcher3/LauncherAppWidgetHost.java
+++ b/src/com/android/launcher3/LauncherAppWidgetHost.java
@@ -22,6 +22,8 @@ import android.appwidget.AppWidgetProviderInfo;
 import android.content.Context;
 import android.os.TransactionTooLargeException;
 
+import java.util.ArrayList;
+
 /**
  * Specific {@link AppWidgetHost} that creates our {@link LauncherAppWidgetHostView}
  * which correctly captures all long-press events. This ensures that users can
@@ -29,6 +31,8 @@ import android.os.TransactionTooLargeException;
  */
 public class LauncherAppWidgetHost extends AppWidgetHost {
 
+    private final ArrayList<Runnable> mProviderChangeListeners = new ArrayList<Runnable>();
+
     Launcher mLauncher;
 
     public LauncherAppWidgetHost(Launcher launcher, int hostId) {
@@ -64,9 +68,21 @@ public class LauncherAppWidgetHost extends AppWidgetHost {
         clearViews();
     }
 
+    public void addProviderChangeListener(Runnable callback) {
+        mProviderChangeListeners.add(callback);
+    }
+
+    public void removeProviderChangeListener(Runnable callback) {
+        mProviderChangeListeners.remove(callback);
+    }
+
     protected void onProvidersChanged() {
         // Once we get the message that widget packages are updated, we need to rebind items
         // in AppsCustomize accordingly.
         mLauncher.bindPackagesUpdated(LauncherModel.getSortedWidgetsAndShortcuts(mLauncher));
+
+        for (Runnable callback : mProviderChangeListeners) {
+            callback.run();
+        }
     }
 }