WidgetTray revamp work

- RecyclerView is rendering
- Animation is connected
- Drag and drop is now handled
- UI tweaking: background, margins, more to come.
- Flicker and preview not loading issue:
  fixed height for the horizontal scroll view.
- Shortcuts are added
- Widget Preview loading should support shortPress for drop
- UI tweaks left: overlay of arrow when there are more items to scroll
- icons are added in the section header
- Sorting of widget sections and widget horizontal list
- Adding all the padding constants to dimen.xml file
- RecyclerView should only support one view type

For items to be addressed in follow up patches OR CLs,
TODO is added to the comment.

b/19897708

Change-Id: Ibfc4da1696a23d20bada93db46e126706eb13cdc

1 files changed, 49 insertions, 0 deletions

diff --git a/res/layout/widgets_view.xml b/res/layout/widgets_view.xml
new file mode 100644
index 000000000..8e7ed161a
--- /dev/null
+++ b/res/layout/widgets_view.xml
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2015 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<!-- The top and bottom paddings are defined in this container, but since we want
+     the list view to span the full width (for touch interception purposes), we
+     will bake the left/right padding into that view's background itself. -->
+<com.android.launcher3.widget.WidgetsContainerView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/widgets_view"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:paddingTop="@dimen/widget_container_inset"
+    android:paddingBottom="@dimen/widget_container_inset"
+    android:descendantFocusability="afterDescendants">
+
+    <!-- Temporary until finalizing on animation.  -->
+    <include
+        android:id="@+id/widgets_reveal_view"
+        layout="@layout/apps_reveal_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center" />
+
+    <LinearLayout
+        android:id="@+id/content"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:clipChildren="false"
+        android:orientation="vertical">
+
+        <android.support.v7.widget.RecyclerView
+                android:id="@+id/widgets_list_view"
+                android:layout_width="match_parent"
+                android:layout_height="match_parent"
+                android:background="@drawable/quantum_panel_dark"/>
+    </LinearLayout>
+</com.android.launcher3.widget.WidgetsContainerView>
\ No newline at end of file