Adding sort switch in FolderPagedView

> Adding options column in DB to store generation purpose flags
> Storing isSorted flag in FolderInfo
> Adding a switch for A-Z sorting (only visible if pageCount > 1)
> When in sorted mode, spring-load snaps to the target location for 1.5 seconds

Change-Id: I8c7c778d2cc3ccbd35a2890a1a705e1c1a7e9a66
diff --git a/src/com/android/launcher3/FolderInfo.java b/src/com/android/launcher3/FolderInfo.java
index 85a792f..3240cbf 100644
--- a/src/com/android/launcher3/FolderInfo.java
+++ b/src/com/android/launcher3/FolderInfo.java
@@ -29,11 +29,20 @@
  */
 public class FolderInfo extends ItemInfo {
 
+    public static final int NO_FLAGS = 0x00000000;
+
+    /**
+     * The folder is locked in sorted mode
+     */
+    public static final int FLAG_ITEMS_SORTED = 0x00000001;
+
     /**
      * Whether this folder has been opened
      */
     boolean opened;
 
+    public int options;
+
     /**
      * The apps and shortcuts
      */
@@ -83,6 +92,8 @@
     void onAddToDatabase(Context context, ContentValues values) {
         super.onAddToDatabase(context, values);
         values.put(LauncherSettings.Favorites.TITLE, title.toString());
+        values.put(LauncherSettings.Favorites.OPTIONS, options);
+
     }
 
     void addListener(FolderListener listener) {
@@ -121,4 +132,25 @@
                 + " cellX=" + cellX + " cellY=" + cellY + " spanX=" + spanX
                 + " spanY=" + spanY + " dropPos=" + Arrays.toString(dropPos) + ")";
     }
+
+    public boolean hasOption(int optionFlag) {
+        return (options & optionFlag) != 0;
+    }
+
+    /**
+     * @param option flag to set or clear
+     * @param isEnabled whether to set or clear the flag
+     * @param context if not null, save changes to the db.
+     */
+    public void setOption(int option, boolean isEnabled, Context context) {
+        int oldOptions = options;
+        if (isEnabled) {
+            options |= option;
+        } else {
+            options &= ~option;
+        }
+        if (context != null && oldOptions != options) {
+            LauncherModel.updateItemInDatabase(context, this);
+        }
+    }
 }