Updating the folder page indicator to be more like the

framework page indicator (used in quick settings)

The active page is indicated with the accent color. During scroll
the active indicator expands to 2 dots corresponding to the visible pages.

Change-Id: Iaf57836b642cf87e5eed98048ecca7dd8e7643a4

src/com/android/launcher3/folder/Folder.java

@@ -78,6 +78,7 @@ import com.android.launcher3.dragndrop.DragController;
 import com.android.launcher3.dragndrop.DragController.DragListener;
 import com.android.launcher3.dragndrop.DragLayer;
 import com.android.launcher3.logging.UserEventDispatcher.LaunchSourceProvider;
+import com.android.launcher3.pageindicators.PageIndicatorDots;
 import com.android.launcher3.userevent.nano.LauncherLogProto;
 import com.android.launcher3.userevent.nano.LauncherLogProto.Target;
 import com.android.launcher3.util.Thunk;
@@ -148,6 +149,7 @@ public class Folder extends LinearLayout implements DragSource, View.OnClickList
     @Thunk FolderPagedView mContent;
     @Thunk View mContentWrapper;
     public ExtendedEditText mFolderName;
+    private PageIndicatorDots mPageIndicator;
 
     private View mFooter;
     private int mFooterHeight;
@@ -228,6 +230,7 @@ public class Folder extends LinearLayout implements DragSource, View.OnClickList
         mContent = (FolderPagedView) findViewById(R.id.folder_content);
         mContent.setFolder(this);
 
+        mPageIndicator = (PageIndicatorDots) findViewById(R.id.folder_page_indicator);
         mFolderName = (ExtendedEditText) findViewById(R.id.folder_name);
         mFolderName.setOnBackKeyListener(new ExtendedEditText.OnBackKeyListener() {
             @Override
@@ -612,7 +615,7 @@ public class Folder extends LinearLayout implements DragSource, View.OnClickList
             float textWidth =  mFolderName.getPaint().measureText(mFolderName.getText().toString());
             float translation = (footerWidth - textWidth) / 2;
             mFolderName.setTranslationX(mContent.mIsRtl ? -translation : translation);
-            mContent.setMarkerScale(0);
+            mPageIndicator.prepareEntryAnimation();
 
             // Do not update the flag if we are in drag mode. The flag will be updated, when we
             // actually drop the icon.
@@ -628,7 +631,7 @@ public class Folder extends LinearLayout implements DragSource, View.OnClickList
                                 AnimationUtils.loadInterpolator(mLauncher,
                                         android.R.interpolator.fast_out_slow_in)
                                 : new LogDecelerateInterpolator(100, 0));
-                    mContent.animateMarkers();
+                    mPageIndicator.playEntryAnimation();
 
                     if (updateAnimationFlag) {
                         mInfo.setOption(FolderInfo.FLAG_MULTI_PAGE_ANIMATION, true, mLauncher);
@@ -637,9 +640,9 @@ public class Folder extends LinearLayout implements DragSource, View.OnClickList
             });
         } else {
             mFolderName.setTranslationX(0);
-            mContent.setMarkerScale(1);
         }
 
+        mPageIndicator.stopAllAnimations();
         openFolderAnim.start();
 
         // Make sure the folder picks up the last drag move even if the finger doesn't move.