Add a dummy activity which we can catch on-click in launcher to open allapps/widgets

Change-Id: Idc718a9e03e7358f972c59fcfc3bf2eaf75e56ee

AndroidManifest.xml

@@ -82,6 +82,17 @@
             </intent-filter>
         </activity>
 
+        <activity
+            android:name="com.android.launcher3.WidgetAdder"
+            android:label="@string/widget_adder"
+            android:icon="@mipmap/ic_launcher_home">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
         <activity
             android:name="com.android.launcher3.WallpaperChooser"
             android:theme="@style/Theme.WallpaperPicker"

res/values/strings.xml

@@ -39,6 +39,8 @@
     <!--  Labels for the tabs in the customize drawer -->
     <string name="widgets_tab_label">Widgets</string>
 
+    <string name="widget_adder">Widgets</string>
+
     <!-- AppsCustomize pane -->
     <!-- Message to tell the user to press and hold on a widget to add it [CHAR_LIMIT=50] -->
     <string name="long_press_widget_to_add">Touch &amp; hold to pick up a widget.</string>

src/com/android/launcher3/Folder.java

@@ -236,14 +236,7 @@ public class Folder extends LinearLayout implements DragSource, View.OnClickList
     public void onClick(View v) {
         Object tag = v.getTag();
         if (tag instanceof ShortcutInfo) {
-            // refactor this code from Folder
-            ShortcutInfo item = (ShortcutInfo) tag;
-            int[] pos = new int[2];
-            v.getLocationOnScreen(pos);
-            item.intent.setSourceBounds(new Rect(pos[0], pos[1],
-                    pos[0] + v.getWidth(), pos[1] + v.getHeight()));
-
-            mLauncher.startActivitySafely(v, item.intent, item);
+            mLauncher.onClick(v);
         }
     }
 

src/com/android/launcher3/Launcher.java

@@ -2000,6 +2000,12 @@ public final class Launcher extends Activity
         if (tag instanceof ShortcutInfo) {
             // Open shortcut
             final Intent intent = ((ShortcutInfo) tag).intent;
+
+            ComponentName widgetComp = new ComponentName(this, WidgetAdder.class);
+            if (intent.getComponent().getClassName().equals(widgetComp.getClassName())) {
+                showAllApps(true);
+                return;
+            }
             int[] pos = new int[2];
             v.getLocationOnScreen(pos);
             intent.setSourceBounds(new Rect(pos[0], pos[1],

src/com/android/launcher3/WidgetAdder.java

@@ -0,0 +1,7 @@
+package com.android.launcher3;
+
+import android.app.Activity;
+
+public class WidgetAdder extends Activity {
+
+}