Adding paging for the widget/shortcut/folder customization area and fixing bugs.

Adding pages for customization drawer with initial implementation of proposed flow
layout for widgets.  Fixes for keeping all apps, and widgets in sync with Launcher
Model, optimizations for reloading all apps pages when invalidating.  Adding some
animations for tab transitions and feedback when long pressing to add certain items.

Change-Id: I8d51749f3a91c964bed35681f3a9192200b0d93e

1 files changed, 32 insertions, 11 deletions

diff --git a/src/com/android/launcher2/AllAppsTabbed.java b/src/com/android/launcher2/AllAppsTabbed.java
index 0470cee3e..114da4ed2 100644
--- a/src/com/android/launcher2/AllAppsTabbed.java
+++ b/src/com/android/launcher2/AllAppsTabbed.java
@@ -18,6 +18,10 @@ package com.android.launcher2;
 
 import java.util.ArrayList;
 
+import android.animation.Animatable;
+import android.animation.AnimatableListenerAdapter;
+import android.animation.Animator;
+import android.animation.PropertyAnimator;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Color;
@@ -96,16 +100,30 @@ public class AllAppsTabbed extends TabHost implements AllAppsView {
 
         setOnTabChangedListener(new OnTabChangeListener() {
             public void onTabChanged(String tabId) {
-                String tag = getCurrentTabTag();
-                if (tag == TAG_ALL) {
-                    mAllApps.setAppFilter(AllAppsPagedView.ALL_APPS_FLAG);
-                } else if (tag == TAG_APPS) {
-                    mAllApps.setAppFilter(ApplicationInfo.APP_FLAG);
-                } else if (tag == TAG_GAMES) {
-                    mAllApps.setAppFilter(ApplicationInfo.GAME_FLAG);
-                } else if (tag == TAG_DOWNLOADED) {
-                    mAllApps.setAppFilter(ApplicationInfo.DOWNLOADED_FLAG);
-                }
+                // animate the changing of the tab content by fading pages in and out
+                final int duration = 150;
+                final float alpha = mAllApps.getAlpha();
+                Animator alphaAnim = new PropertyAnimator(duration, mAllApps, "alpha", alpha, 0.0f);
+                alphaAnim.addListener(new AnimatableListenerAdapter() {
+                    public void onAnimationEnd(Animatable animation) {
+                        String tag = getCurrentTabTag();
+                        if (tag == TAG_ALL) {
+                            mAllApps.setAppFilter(AllAppsPagedView.ALL_APPS_FLAG);
+                        } else if (tag == TAG_APPS) {
+                            mAllApps.setAppFilter(ApplicationInfo.APP_FLAG);
+                        } else if (tag == TAG_GAMES) {
+                            mAllApps.setAppFilter(ApplicationInfo.GAME_FLAG);
+                        } else if (tag == TAG_DOWNLOADED) {
+                            mAllApps.setAppFilter(ApplicationInfo.DOWNLOADED_FLAG);
+                        }
+
+                        final float alpha = mAllApps.getAlpha();
+                        Animator alphaAnim = 
+                            new PropertyAnimator(duration, mAllApps, "alpha", alpha, 1.0f);
+                        alphaAnim.start();
+                    }
+                });
+                alphaAnim.start();
             }
         });
 
@@ -135,9 +153,12 @@ public class AllAppsTabbed extends TabHost implements AllAppsView {
 
     @Override
     public void setVisibility(int visibility) {
+        final boolean isVisible = (visibility == View.VISIBLE); 
         super.setVisibility(visibility);
-        float zoom = visibility == View.VISIBLE ? 1.0f : 0.0f;
+        float zoom = (isVisible ? 1.0f : 0.0f);
         mAllApps.zoom(zoom, false);
+        if (!isVisible)
+            mAllApps.cleanup();
     }
 
     @Override