Add more education tips for widgets. (2/3)

Show education dialog on WidgetsFullSheet.
-Have a button in widget education dialog to intent into PixelTips apps.
-Make sure arrow tip view shows after dismissing education dialog on
WidgetsFullSheet if there is a widget to show it on.
-Update colors and layout for arrow tips.

Test: Tested manually
Bug: 185354491
Change-Id: I5cbdd02fc4f19a49a42dac4451b071e3d604747f
diff --git a/src/com/android/launcher3/AbstractFloatingView.java b/src/com/android/launcher3/AbstractFloatingView.java
index 9100947..4979b40 100644
--- a/src/com/android/launcher3/AbstractFloatingView.java
+++ b/src/com/android/launcher3/AbstractFloatingView.java
@@ -63,7 +63,8 @@
             TYPE_TASK_MENU,
             TYPE_OPTIONS_POPUP,
             TYPE_ICON_SURFACE,
-            TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP
+            TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP,
+            TYPE_WIDGETS_EDUCATION_DIALOG
     })
     @Retention(RetentionPolicy.SOURCE)
     public @interface FloatingViewType {}
@@ -85,17 +86,19 @@
     public static final int TYPE_ICON_SURFACE = 1 << 13;
 
     public static final int TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP = 1 << 14;
+    public static final int TYPE_WIDGETS_EDUCATION_DIALOG = 1 << 15;
 
     public static final int TYPE_ALL = TYPE_FOLDER | TYPE_ACTION_POPUP
             | TYPE_WIDGETS_BOTTOM_SHEET | TYPE_WIDGET_RESIZE_FRAME | TYPE_WIDGETS_FULL_SHEET
             | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE | TYPE_TASK_MENU
             | TYPE_OPTIONS_POPUP | TYPE_SNACKBAR | TYPE_LISTENER | TYPE_ALL_APPS_EDU
-            | TYPE_ICON_SURFACE | TYPE_DRAG_DROP_POPUP | TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP;
+            | TYPE_ICON_SURFACE | TYPE_DRAG_DROP_POPUP | TYPE_PIN_WIDGET_FROM_EXTERNAL_POPUP
+            | TYPE_WIDGETS_EDUCATION_DIALOG;
 
     // Type of popups which should be kept open during launcher rebind
     public static final int TYPE_REBIND_SAFE = TYPE_WIDGETS_FULL_SHEET
             | TYPE_WIDGETS_BOTTOM_SHEET | TYPE_ON_BOARD_POPUP | TYPE_DISCOVERY_BOUNCE
-            | TYPE_ALL_APPS_EDU | TYPE_ICON_SURFACE;
+            | TYPE_ALL_APPS_EDU | TYPE_ICON_SURFACE | TYPE_WIDGETS_EDUCATION_DIALOG;
 
     // 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