src/com/android/launcher3/WallpaperPickerActivity.java - platform/packages/apps/Launcher3 - Gitiles

 /*
  * Copyright (C) 2013 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.
  */

 package com.android.launcher3;

 import android.animation.LayoutTransition;
 import android.app.ActionBar;
 import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.content.pm.ActivityInfo;
 import android.content.pm.ApplicationInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.res.Resources;
 import android.graphics.Bitmap;
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.graphics.RectF;
 import android.graphics.drawable.Drawable;
 import android.graphics.drawable.LevelListDrawable;
 import android.net.Uri;
 import android.os.Bundle;
 import android.util.Log;
 import android.util.Pair;
 import android.view.ActionMode;
 import android.view.LayoutInflater;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.view.SubMenu;
 import android.view.View;
 import android.view.View.OnClickListener;
 import android.view.ViewGroup;
 import android.view.animation.DecelerateInterpolator;
 import android.widget.BaseAdapter;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.ListAdapter;
 import android.widget.SpinnerAdapter;
 import android.widget.TextView;

 import com.android.photos.BitmapRegionTileSource;

 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;

 public class WallpaperPickerActivity extends WallpaperCropActivity {
     static final String TAG = "Launcher.WallpaperPickerActivity";

     private static final int IMAGE_PICK = 5;
     private static final int PICK_WALLPAPER_THIRD_PARTY_ACTIVITY = 6;
     private static final String TEMP_WALLPAPER_TILES = "TEMP_WALLPAPER_TILES";

     private ArrayList<Drawable> mBundledWallpaperThumbs;
     private ArrayList<Integer> mBundledWallpaperResIds;
     private Resources mWallpaperResources;

     private View mSelectedThumb;
     private boolean mIgnoreNextTap;
     private OnClickListener mThumbnailOnClickListener;

     private LinearLayout mWallpapersView;

     private ActionMode.Callback mActionModeCallback;
     private ActionMode mActionMode;

     private View.OnLongClickListener mLongClickListener;

     ArrayList<Uri> mTempWallpaperTiles = new ArrayList<Uri>();
     private SavedWallpaperImages mSavedImages;

     private static class ThumbnailMetaData {
         public boolean mLaunchesGallery;
         public Uri mWallpaperUri;
         public int mSavedWallpaperDbId;
         public int mWallpaperResId;
     }

     // called by onCreate; this is subclassed to overwrite WallpaperCropActivity
     protected void init() {
         setContentView(R.layout.wallpaper_picker);

         mCropView = (CropView) findViewById(R.id.cropView);
         final View wallpaperStrip = findViewById(R.id.wallpaper_strip);
         mCropView.setTouchCallback(new CropView.TouchCallback() {
             LauncherViewPropertyAnimator mAnim;
             public void onTouchDown() {
                 if (mAnim != null) {
                     mAnim.cancel();
                 }
                 if (wallpaperStrip.getTranslationY() == 0) {
                     mIgnoreNextTap = true;
                 }
                 mAnim = new LauncherViewPropertyAnimator(wallpaperStrip);
                 mAnim.translationY(wallpaperStrip.getHeight())
                     .setInterpolator(new DecelerateInterpolator(0.75f));
                 mAnim.start();
             }
             public void onTap() {
                 boolean ignoreTap = mIgnoreNextTap;
                 mIgnoreNextTap = false;
                 if (!ignoreTap) {
                     if (mAnim != null) {
                         mAnim.cancel();
                     }
                     mAnim = new LauncherViewPropertyAnimator(wallpaperStrip);
                     mAnim.translationY(0).setInterpolator(new DecelerateInterpolator(0.75f));
                     mAnim.start();
                 }
             }
         });

         mThumbnailOnClickListener = new OnClickListener() {
             public void onClick(View v) {
                 if (mActionMode != null) {
                     // When CAB is up, clicking toggles the item instead
                     if (v.isLongClickable()) {
                         mLongClickListener.onLongClick(v);
                     }
                     return;
                 }
                 if (mSelectedThumb != null) {
                     mSelectedThumb.setSelected(false);
                 }

                 ThumbnailMetaData meta = (ThumbnailMetaData) v.getTag();

                 if (!meta.mLaunchesGallery) {
                     mSelectedThumb = v;
                     v.setSelected(true);
                 }

                 if (meta.mLaunchesGallery) {
                     Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
                     intent.setType("image/*");
                     Utilities.startActivityForResultSafely(
                             WallpaperPickerActivity.this, intent, IMAGE_PICK);
                 } else if (meta.mWallpaperUri != null) {
                     mCropView.setTileSource(new BitmapRegionTileSource(WallpaperPickerActivity.this,
                             meta.mWallpaperUri, 1024, 0), null);
                     mCropView.setTouchEnabled(true);
                 } else if (meta.mSavedWallpaperDbId != 0) {
                     String imageFilename = mSavedImages.getImageFilename(meta.mSavedWallpaperDbId);
                     File file = new File(getFilesDir(), imageFilename);
                     mCropView.setTileSource(new BitmapRegionTileSource(WallpaperPickerActivity.this,
                             file.getAbsolutePath(), 1024, 0), null);
                     mCropView.moveToLeft();
                     mCropView.setTouchEnabled(false);
                 } else if (meta.mWallpaperResId != 0) {
                     BitmapRegionTileSource source = new BitmapRegionTileSource(mWallpaperResources,
                             WallpaperPickerActivity.this, meta.mWallpaperResId, 1024, 0);
                     mCropView.setTileSource(source, null);
                     Point wallpaperSize = WallpaperCropActivity.getDefaultWallpaperSize(
                             getResources(), getWindowManager());
                     RectF crop = WallpaperCropActivity.getMaxCropRect(
                             source.getImageWidth(), source.getImageHeight(),
                             wallpaperSize.x, wallpaperSize.y, false);
                     mCropView.setScale(wallpaperSize.x / crop.width());
                     mCropView.setTouchEnabled(false);
                 }
             }
         };
         mLongClickListener = new View.OnLongClickListener() {
             // Called when the user long-clicks on someView
             public boolean onLongClick(View view) {
                 CheckableFrameLayout c = (CheckableFrameLayout) view;
                 c.toggle();

                 if (mActionMode != null) {
                     mActionMode.invalidate();
                 } else {
                     // Start the CAB using the ActionMode.Callback defined below
                     mActionMode = startActionMode(mActionModeCallback);
                     int childCount = mWallpapersView.getChildCount();
                     for (int i = 0; i < childCount; i++) {
                         mWallpapersView.getChildAt(i).setSelected(false);
                     }
                 }
                 return true;
             }
         };

         // Populate the built-in wallpapers
         findBundledWallpapers();
         mWallpapersView = (LinearLayout) findViewById(R.id.wallpaper_list);
         ImageAdapter ia = new ImageAdapter(this, mBundledWallpaperThumbs);
         populateWallpapersFromAdapter(mWallpapersView, ia, mBundledWallpaperResIds, true, false);

         // Populate the saved wallpapers
         mSavedImages = new SavedWallpaperImages(this);
         mSavedImages.loadThumbnailsAndImageIdList();
         ArrayList<Drawable> savedWallpaperThumbs = mSavedImages.getThumbnails();
         ArrayList<Integer > savedWallpaperIds = mSavedImages.getImageIds();
         ia = new ImageAdapter(this, savedWallpaperThumbs);
         populateWallpapersFromAdapter(mWallpapersView, ia, savedWallpaperIds, false, true);

         // Add a tile for the Gallery
         FrameLayout galleryThumbnail = (FrameLayout) getLayoutInflater().
                 inflate(R.layout.wallpaper_picker_gallery_item, mWallpapersView, false);
         setWallpaperItemPaddingToZero(galleryThumbnail);

         TextView galleryLabel =
                 (TextView) galleryThumbnail.findViewById(R.id.wallpaper_item_label);
         galleryLabel.setText(R.string.gallery);
         mWallpapersView.addView(galleryThumbnail, 0);

         ThumbnailMetaData meta = new ThumbnailMetaData();
         meta.mLaunchesGallery = true;
         galleryThumbnail.setTag(meta);
         galleryThumbnail.setOnClickListener(mThumbnailOnClickListener);

         // Create smooth layout transitions for when items are deleted
         final LayoutTransition transitioner = new LayoutTransition();
         transitioner.setDuration(200);
         transitioner.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 0);
         transitioner.setAnimator(LayoutTransition.DISAPPEARING, null);
         mWallpapersView.setLayoutTransition(transitioner);

         // Action bar
         // Show the custom action bar view
         final ActionBar actionBar = getActionBar();
         actionBar.setCustomView(R.layout.actionbar_set_wallpaper);
         actionBar.getCustomView().setOnClickListener(
                 new View.OnClickListener() {
                     @Override
                     public void onClick(View v) {
                         ThumbnailMetaData meta = (ThumbnailMetaData) mSelectedThumb.getTag();
                         if (meta.mLaunchesGallery) {
                             // shouldn't be selected, but do nothing
                         } else if (meta.mWallpaperUri != null) {
                             boolean finishActivityWhenDone = true;
                             OnBitmapCroppedHandler h = new OnBitmapCroppedHandler() {
                                 public void onBitmapCropped(byte[] imageBytes) {
                                     Bitmap thumb = createThumbnail(null, imageBytes, true);
                                     mSavedImages.writeImage(thumb, imageBytes);
                                 }
                             };
                             cropImageAndSetWallpaper(meta.mWallpaperUri, h, finishActivityWhenDone);
                         } else if (meta.mSavedWallpaperDbId != 0) {
                             boolean finishActivityWhenDone = true;
                             String imageFilename =
                                     mSavedImages.getImageFilename(meta.mSavedWallpaperDbId);
                             setWallpaper(imageFilename, finishActivityWhenDone);
                         } else if (meta.mWallpaperResId != 0) {
                             boolean finishActivityWhenDone = true;
                             cropImageAndSetWallpaper(mWallpaperResources,
                                     meta.mWallpaperResId, finishActivityWhenDone);
                         }
                     }
                 });

         // CAB for deleting items
         mActionModeCallback = new ActionMode.Callback() {
             // Called when the action mode is created; startActionMode() was called
             @Override
             public boolean onCreateActionMode(ActionMode mode, Menu menu) {
                 // Inflate a menu resource providing context menu items
                 MenuInflater inflater = mode.getMenuInflater();
                 inflater.inflate(R.menu.cab_delete_wallpapers, menu);
                 return true;
             }

             private int numCheckedItems() {
                 int childCount = mWallpapersView.getChildCount();
                 int numCheckedItems = 0;
                 for (int i = 0; i < childCount; i++) {
                     CheckableFrameLayout c = (CheckableFrameLayout) mWallpapersView.getChildAt(i);
                     if (c.isChecked()) {
                         numCheckedItems++;
                     }
                 }
                 return numCheckedItems;
             }

             // Called each time the action mode is shown. Always called after onCreateActionMode,
             // but may be called multiple times if the mode is invalidated.
             @Override
             public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
                 int numCheckedItems = numCheckedItems();
                 if (numCheckedItems == 0) {
                     mode.finish();
                     return true;
                 } else {
                     mode.setTitle(getResources().getQuantityString(
                             R.plurals.number_of_items_selected, numCheckedItems, numCheckedItems));
                     return true;
                 }
             }

             // Called when the user selects a contextual menu item
             @Override
             public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
                 int itemId = item.getItemId();
                 if (itemId == R.id.menu_delete) {
                     int childCount = mWallpapersView.getChildCount();
                     ArrayList<View> viewsToRemove = new ArrayList<View>();
                     for (int i = 0; i < childCount; i++) {
                         CheckableFrameLayout c =
                                 (CheckableFrameLayout) mWallpapersView.getChildAt(i);
                         if (c.isChecked()) {
                             ThumbnailMetaData meta = (ThumbnailMetaData) c.getTag();
                             mSavedImages.deleteImage(meta.mSavedWallpaperDbId);
                             viewsToRemove.add(c);
                         }
                     }
                     for (View v : viewsToRemove) {
                         mWallpapersView.removeView(v);
                     }
                     ///xxxxx DESTROYING
                     mode.finish(); // Action picked, so close the CAB
                     return true;
                 } else {
                     return false;
                 }
             }

             // Called when the user exits the action mode
             @Override
             public void onDestroyActionMode(ActionMode mode) {
                 int childCount = mWallpapersView.getChildCount();
                 for (int i = 0; i < childCount; i++) {
                     CheckableFrameLayout c = (CheckableFrameLayout) mWallpapersView.getChildAt(i);
                     c.setChecked(false);
                 }
                 mSelectedThumb.setSelected(true);
                 mActionMode = null;
             }
         };
     }
     protected void onSaveInstanceState(Bundle outState) {
         outState.putParcelableArrayList(TEMP_WALLPAPER_TILES, mTempWallpaperTiles);
     }

     protected void onRestoreInstanceState(Bundle savedInstanceState) {
         ArrayList<Uri> uris = savedInstanceState.getParcelableArrayList(TEMP_WALLPAPER_TILES);
         for (Uri uri : uris) {
             addTemporaryWallpaperTile(uri);
         }
     }

     private void populateWallpapersFromAdapter(ViewGroup parent, ImageAdapter ia,
             ArrayList<Integer> imageIds, boolean imagesAreResources, boolean addLongPressHandler) {
         for (int i = 0; i < ia.getCount(); i++) {
             FrameLayout thumbnail = (FrameLayout) ia.getView(i, null, parent);
             parent.addView(thumbnail, i);

             ThumbnailMetaData meta = new ThumbnailMetaData();
             if (imagesAreResources) {
                 meta.mWallpaperResId = imageIds.get(i);
             } else {
                 meta.mSavedWallpaperDbId = imageIds.get(i);
             }
             thumbnail.setTag(meta);
             if (addLongPressHandler) {
                 addLongPressHandler(thumbnail);
             }
             thumbnail.setOnClickListener(mThumbnailOnClickListener);
             if (i == 0) {
                 mThumbnailOnClickListener.onClick(thumbnail);
             }
         }
     }

     private Bitmap createThumbnail(Uri uri, byte[] imageBytes, boolean leftAligned) {
         Resources res = getResources();
         int width = res.getDimensionPixelSize(R.dimen.wallpaperThumbnailWidth);
         int height = res.getDimensionPixelSize(R.dimen.wallpaperThumbnailHeight);

         BitmapCropTask cropTask;
         if (uri != null) {
             cropTask = new BitmapCropTask(uri, null, width, height, false, true, null);
         } else {
             cropTask = new BitmapCropTask(imageBytes, null, width, height, false, true, null);
         }
         Point bounds = cropTask.getImageBounds();
         if (bounds == null) {
             return null;
         }

         RectF cropRect = WallpaperCropActivity.getMaxCropRect(
                 bounds.x, bounds.y, width, height, leftAligned);
         cropTask.setCropBounds(cropRect);

         if (cropTask.cropBitmap()) {
             return cropTask.getCroppedBitmap();
         } else {
             return null;
         }
     }

     private void addTemporaryWallpaperTile(Uri uri) {
         mTempWallpaperTiles.add(uri);
         // Add a tile for the image picked from Gallery
         FrameLayout pickedImageThumbnail = (FrameLayout) getLayoutInflater().
                 inflate(R.layout.wallpaper_picker_item, mWallpapersView, false);
         setWallpaperItemPaddingToZero(pickedImageThumbnail);

         // Load the thumbnail
         ImageView image = (ImageView) pickedImageThumbnail.findViewById(R.id.wallpaper_image);
         Bitmap thumb = createThumbnail(uri, null, false);
         if (thumb != null) {
             image.setImageBitmap(thumb);
             Drawable thumbDrawable = image.getDrawable();
             thumbDrawable.setDither(true);
         } else {
             Log.e(TAG, "Error loading thumbnail for uri=" + uri);
         }
         mWallpapersView.addView(pickedImageThumbnail, 1);

         ThumbnailMetaData meta = new ThumbnailMetaData();
         meta.mWallpaperUri = uri;
         pickedImageThumbnail.setTag(meta);
         pickedImageThumbnail.setOnClickListener(mThumbnailOnClickListener);
         mThumbnailOnClickListener.onClick(pickedImageThumbnail);
     }

     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (requestCode == IMAGE_PICK && resultCode == RESULT_OK) {
             Uri uri = data.getData();
             addTemporaryWallpaperTile(uri);
         } else if (requestCode == PICK_WALLPAPER_THIRD_PARTY_ACTIVITY) {
             // No result code is returned; just return
             setResult(RESULT_OK);
             finish();
         }
     }

     private static void setWallpaperItemPaddingToZero(FrameLayout frameLayout) {
         frameLayout.setPadding(0, 0, 0, 0);
         frameLayout.setForeground(new ZeroPaddingDrawable(frameLayout.getForeground()));
     }

     private void addLongPressHandler(View v) {
         v.setOnLongClickListener(mLongClickListener);
     }


     public boolean onMenuItemSelected(int featureId, MenuItem item) {
         if (item.getIntent() == null) {
             return super.onMenuItemSelected(featureId, item);
         } else {
             Utilities.startActivityForResultSafely(
                     this, item.getIntent(), PICK_WALLPAPER_THIRD_PARTY_ACTIVITY);
             return true;
         }
     }

     @Override
     public boolean onCreateOptionsMenu(Menu menu) {
         final Intent pickWallpaperIntent = new Intent(Intent.ACTION_SET_WALLPAPER);
         final PackageManager pm = getPackageManager();
         final List<ResolveInfo> apps =
                 pm.queryIntentActivities(pickWallpaperIntent, 0);

         SubMenu sub = menu.addSubMenu("Other\u2026"); // TODO: what's the better way to do this?
         sub.getItem().setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);


         // Get list of image picker intents
         Intent pickImageIntent = new Intent(Intent.ACTION_GET_CONTENT);
         pickImageIntent.setType("image/*");
         final List<ResolveInfo> imagePickerActivities =
                 pm.queryIntentActivities(pickImageIntent, 0);
         final ComponentName[] imageActivities = new ComponentName[imagePickerActivities.size()];
         for (int i = 0; i < imagePickerActivities.size(); i++) {
             ActivityInfo activityInfo = imagePickerActivities.get(i).activityInfo;
             imageActivities[i] = new ComponentName(activityInfo.packageName, activityInfo.name);
         }

         outerLoop:
         for (ResolveInfo info : apps) {
             final ComponentName itemComponentName =
                     new ComponentName(info.activityInfo.packageName, info.activityInfo.name);
             final String itemPackageName = itemComponentName.getPackageName();
             // Exclude anything from our own package, and the old Launcher
             if (itemPackageName.equals(getPackageName()) ||
                     itemPackageName.equals("com.android.launcher")) {
                 continue;
             }
             // Exclude any package that already responds to the image picker intent
             for (ResolveInfo imagePickerActivityInfo : imagePickerActivities) {
                 if (itemPackageName.equals(
                         imagePickerActivityInfo.activityInfo.packageName)) {
                     continue outerLoop;
                 }
             }
             MenuItem mi = sub.add(info.loadLabel(pm));
             Intent launchIntent = new Intent(Intent.ACTION_SET_WALLPAPER);
             launchIntent.setComponent(itemComponentName);
             mi.setIntent(launchIntent);
             Drawable icon = info.loadIcon(pm);
             if (icon != null) {
                 mi.setIcon(icon);
             }
         }
         return super.onCreateOptionsMenu(menu);
     }

     private void findBundledWallpapers() {
         mBundledWallpaperThumbs = new ArrayList<Drawable>(24);
         mBundledWallpaperResIds = new ArrayList<Integer>(24);

         Pair<ApplicationInfo, Integer> r = getWallpaperArrayResourceId();
         if (r != null) {
             try {
                 mWallpaperResources = getPackageManager().getResourcesForApplication(r.first);
                 addWallpapers(mWallpaperResources, r.first.packageName, r.second);
             } catch (PackageManager.NameNotFoundException e) {
             }
         }
     }

     public Pair<ApplicationInfo, Integer> getWallpaperArrayResourceId() {
         // Context.getPackageName() may return the "original" package name,
         // com.android.launcher3; Resources needs the real package name,
         // com.android.launcher3. So we ask Resources for what it thinks the
         // package name should be.
         final String packageName = getResources().getResourcePackageName(R.array.wallpapers);
         try {
             ApplicationInfo info = getPackageManager().getApplicationInfo(packageName, 0);
             return new Pair<ApplicationInfo, Integer>(info, R.array.wallpapers);
         } catch (PackageManager.NameNotFoundException e) {
             return null;
         }
     }

     private void addWallpapers(Resources resources, String packageName, int listResId) {
         final String[] extras = resources.getStringArray(listResId);
         for (String extra : extras) {
             int res = resources.getIdentifier(extra, "drawable", packageName);
             if (res != 0) {
                 final int thumbRes = resources.getIdentifier(extra + "_small",
                         "drawable", packageName);

                 if (thumbRes != 0) {
                     mBundledWallpaperThumbs.add(resources.getDrawable(thumbRes));
                     mBundledWallpaperResIds.add(res);
                     // Log.d(TAG, "add: [" + packageName + "]: " + extra + " (" + res + ")");
                 }
             } else {
                 Log.e(TAG, "Couldn't find wallpaper " + extra);
             }
         }
     }

     static class ZeroPaddingDrawable extends LevelListDrawable {
         public ZeroPaddingDrawable(Drawable d) {
             super();
             addLevel(0, 0, d);
             setLevel(0);
         }

         @Override
         public boolean getPadding(Rect padding) {
             padding.set(0, 0, 0, 0);
             return true;
         }
     }

     private static class ImageAdapter extends BaseAdapter implements ListAdapter, SpinnerAdapter {
         private LayoutInflater mLayoutInflater;
         private ArrayList<Drawable> mThumbs;

         ImageAdapter(Activity activity, ArrayList<Drawable> thumbs) {
             mLayoutInflater = activity.getLayoutInflater();
             mThumbs = thumbs;
         }

         public int getCount() {
             return mThumbs.size();
         }

         public Object getItem(int position) {
             return position;
         }

         public long getItemId(int position) {
             return position;
         }

         public View getView(int position, View convertView, ViewGroup parent) {
             View view;

             if (convertView == null) {
                 view = mLayoutInflater.inflate(R.layout.wallpaper_picker_item, parent, false);
             } else {
                 view = convertView;
             }

             setWallpaperItemPaddingToZero((FrameLayout) view);

             ImageView image = (ImageView) view.findViewById(R.id.wallpaper_image);

             Drawable thumbDrawable = mThumbs.get(position);
             if (thumbDrawable != null) {
                 image.setImageDrawable(thumbDrawable);
                 thumbDrawable.setDither(true);
             } else {
                 Log.e(TAG, "Error decoding thumbnail for wallpaper #" + position);
             }

             return view;
         }
     }
 }
	/*
	* Copyright (C) 2013 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.
	*/

	package com.android.launcher3;

	import android.animation.LayoutTransition;
	import android.app.ActionBar;
	import android.app.Activity;
	import android.content.ComponentName;
	import android.content.Intent;
	import android.content.pm.ActivityInfo;
	import android.content.pm.ApplicationInfo;
	import android.content.pm.PackageManager;
	import android.content.pm.ResolveInfo;
	import android.content.res.Resources;
	import android.graphics.Bitmap;
	import android.graphics.Point;
	import android.graphics.Rect;
	import android.graphics.RectF;
	import android.graphics.drawable.Drawable;
	import android.graphics.drawable.LevelListDrawable;
	import android.net.Uri;
	import android.os.Bundle;
	import android.util.Log;
	import android.util.Pair;
	import android.view.ActionMode;
	import android.view.LayoutInflater;
	import android.view.Menu;
	import android.view.MenuInflater;
	import android.view.MenuItem;
	import android.view.SubMenu;
	import android.view.View;
	import android.view.View.OnClickListener;
	import android.view.ViewGroup;
	import android.view.animation.DecelerateInterpolator;
	import android.widget.BaseAdapter;
	import android.widget.FrameLayout;
	import android.widget.ImageView;
	import android.widget.LinearLayout;
	import android.widget.ListAdapter;
	import android.widget.SpinnerAdapter;
	import android.widget.TextView;

	import com.android.photos.BitmapRegionTileSource;

	import java.io.File;
	import java.util.ArrayList;
	import java.util.List;

	public class WallpaperPickerActivity extends WallpaperCropActivity {
	static final String TAG = "Launcher.WallpaperPickerActivity";

	private static final int IMAGE_PICK = 5;
	private static final int PICK_WALLPAPER_THIRD_PARTY_ACTIVITY = 6;
	private static final String TEMP_WALLPAPER_TILES = "TEMP_WALLPAPER_TILES";

	private ArrayList<Drawable> mBundledWallpaperThumbs;
	private ArrayList<Integer> mBundledWallpaperResIds;
	private Resources mWallpaperResources;

	private View mSelectedThumb;
	private boolean mIgnoreNextTap;
	private OnClickListener mThumbnailOnClickListener;

	private LinearLayout mWallpapersView;

	private ActionMode.Callback mActionModeCallback;
	private ActionMode mActionMode;

	private View.OnLongClickListener mLongClickListener;

	ArrayList<Uri> mTempWallpaperTiles = new ArrayList<Uri>();
	private SavedWallpaperImages mSavedImages;

	private static class ThumbnailMetaData {
	public boolean mLaunchesGallery;
	public Uri mWallpaperUri;
	public int mSavedWallpaperDbId;
	public int mWallpaperResId;
	}

	// called by onCreate; this is subclassed to overwrite WallpaperCropActivity
	protected void init() {
	setContentView(R.layout.wallpaper_picker);

	mCropView = (CropView) findViewById(R.id.cropView);
	final View wallpaperStrip = findViewById(R.id.wallpaper_strip);
	mCropView.setTouchCallback(new CropView.TouchCallback() {
	LauncherViewPropertyAnimator mAnim;
	public void onTouchDown() {
	if (mAnim != null) {
	mAnim.cancel();
	}
	if (wallpaperStrip.getTranslationY() == 0) {
	mIgnoreNextTap = true;
	}
	mAnim = new LauncherViewPropertyAnimator(wallpaperStrip);
	mAnim.translationY(wallpaperStrip.getHeight())
	.setInterpolator(new DecelerateInterpolator(0.75f));
	mAnim.start();
	}
	public void onTap() {
	boolean ignoreTap = mIgnoreNextTap;
	mIgnoreNextTap = false;
	if (!ignoreTap) {
	if (mAnim != null) {
	mAnim.cancel();
	}
	mAnim = new LauncherViewPropertyAnimator(wallpaperStrip);
	mAnim.translationY(0).setInterpolator(new DecelerateInterpolator(0.75f));
	mAnim.start();
	}
	}
	});

	mThumbnailOnClickListener = new OnClickListener() {
	public void onClick(View v) {
	if (mActionMode != null) {
	// When CAB is up, clicking toggles the item instead
	if (v.isLongClickable()) {
	mLongClickListener.onLongClick(v);
	}
	return;
	}
	if (mSelectedThumb != null) {
	mSelectedThumb.setSelected(false);
	}

	ThumbnailMetaData meta = (ThumbnailMetaData) v.getTag();

	if (!meta.mLaunchesGallery) {
	mSelectedThumb = v;
	v.setSelected(true);
	}

	if (meta.mLaunchesGallery) {
	Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
	intent.setType("image/*");
	Utilities.startActivityForResultSafely(
	WallpaperPickerActivity.this, intent, IMAGE_PICK);
	} else if (meta.mWallpaperUri != null) {
	mCropView.setTileSource(new BitmapRegionTileSource(WallpaperPickerActivity.this,
	meta.mWallpaperUri, 1024, 0), null);
	mCropView.setTouchEnabled(true);
	} else if (meta.mSavedWallpaperDbId != 0) {
	String imageFilename = mSavedImages.getImageFilename(meta.mSavedWallpaperDbId);
	File file = new File(getFilesDir(), imageFilename);
	mCropView.setTileSource(new BitmapRegionTileSource(WallpaperPickerActivity.this,
	file.getAbsolutePath(), 1024, 0), null);
	mCropView.moveToLeft();
	mCropView.setTouchEnabled(false);
	} else if (meta.mWallpaperResId != 0) {
	BitmapRegionTileSource source = new BitmapRegionTileSource(mWallpaperResources,
	WallpaperPickerActivity.this, meta.mWallpaperResId, 1024, 0);
	mCropView.setTileSource(source, null);
	Point wallpaperSize = WallpaperCropActivity.getDefaultWallpaperSize(
	getResources(), getWindowManager());
	RectF crop = WallpaperCropActivity.getMaxCropRect(
	source.getImageWidth(), source.getImageHeight(),
	wallpaperSize.x, wallpaperSize.y, false);
	mCropView.setScale(wallpaperSize.x / crop.width());
	mCropView.setTouchEnabled(false);
	}
	}
	};
	mLongClickListener = new View.OnLongClickListener() {
	// Called when the user long-clicks on someView
	public boolean onLongClick(View view) {
	CheckableFrameLayout c = (CheckableFrameLayout) view;
	c.toggle();

	if (mActionMode != null) {
	mActionMode.invalidate();
	} else {
	// Start the CAB using the ActionMode.Callback defined below
	mActionMode = startActionMode(mActionModeCallback);
	int childCount = mWallpapersView.getChildCount();
	for (int i = 0; i < childCount; i++) {
	mWallpapersView.getChildAt(i).setSelected(false);
	}
	}
	return true;
	}
	};

	// Populate the built-in wallpapers
	findBundledWallpapers();
	mWallpapersView = (LinearLayout) findViewById(R.id.wallpaper_list);
	ImageAdapter ia = new ImageAdapter(this, mBundledWallpaperThumbs);
	populateWallpapersFromAdapter(mWallpapersView, ia, mBundledWallpaperResIds, true, false);

	// Populate the saved wallpapers
	mSavedImages = new SavedWallpaperImages(this);
	mSavedImages.loadThumbnailsAndImageIdList();
	ArrayList<Drawable> savedWallpaperThumbs = mSavedImages.getThumbnails();
	ArrayList<Integer > savedWallpaperIds = mSavedImages.getImageIds();
	ia = new ImageAdapter(this, savedWallpaperThumbs);
	populateWallpapersFromAdapter(mWallpapersView, ia, savedWallpaperIds, false, true);

	// Add a tile for the Gallery
	FrameLayout galleryThumbnail = (FrameLayout) getLayoutInflater().
	inflate(R.layout.wallpaper_picker_gallery_item, mWallpapersView, false);
	setWallpaperItemPaddingToZero(galleryThumbnail);

	TextView galleryLabel =
	(TextView) galleryThumbnail.findViewById(R.id.wallpaper_item_label);
	galleryLabel.setText(R.string.gallery);
	mWallpapersView.addView(galleryThumbnail, 0);

	ThumbnailMetaData meta = new ThumbnailMetaData();
	meta.mLaunchesGallery = true;
	galleryThumbnail.setTag(meta);
	galleryThumbnail.setOnClickListener(mThumbnailOnClickListener);

	// Create smooth layout transitions for when items are deleted
	final LayoutTransition transitioner = new LayoutTransition();
	transitioner.setDuration(200);
	transitioner.setStartDelay(LayoutTransition.CHANGE_DISAPPEARING, 0);
	transitioner.setAnimator(LayoutTransition.DISAPPEARING, null);
	mWallpapersView.setLayoutTransition(transitioner);

	// Action bar
	// Show the custom action bar view
	final ActionBar actionBar = getActionBar();
	actionBar.setCustomView(R.layout.actionbar_set_wallpaper);
	actionBar.getCustomView().setOnClickListener(
	new View.OnClickListener() {
	@Override
	public void onClick(View v) {
	ThumbnailMetaData meta = (ThumbnailMetaData) mSelectedThumb.getTag();
	if (meta.mLaunchesGallery) {
	// shouldn't be selected, but do nothing
	} else if (meta.mWallpaperUri != null) {
	boolean finishActivityWhenDone = true;
	OnBitmapCroppedHandler h = new OnBitmapCroppedHandler() {
	public void onBitmapCropped(byte[] imageBytes) {
	Bitmap thumb = createThumbnail(null, imageBytes, true);
	mSavedImages.writeImage(thumb, imageBytes);
	}
	};
	cropImageAndSetWallpaper(meta.mWallpaperUri, h, finishActivityWhenDone);
	} else if (meta.mSavedWallpaperDbId != 0) {
	boolean finishActivityWhenDone = true;
	String imageFilename =
	mSavedImages.getImageFilename(meta.mSavedWallpaperDbId);
	setWallpaper(imageFilename, finishActivityWhenDone);
	} else if (meta.mWallpaperResId != 0) {
	boolean finishActivityWhenDone = true;
	cropImageAndSetWallpaper(mWallpaperResources,
	meta.mWallpaperResId, finishActivityWhenDone);
	}
	}
	});

	// CAB for deleting items
	mActionModeCallback = new ActionMode.Callback() {
	// Called when the action mode is created; startActionMode() was called
	@Override
	public boolean onCreateActionMode(ActionMode mode, Menu menu) {
	// Inflate a menu resource providing context menu items
	MenuInflater inflater = mode.getMenuInflater();
	inflater.inflate(R.menu.cab_delete_wallpapers, menu);
	return true;
	}

	private int numCheckedItems() {
	int childCount = mWallpapersView.getChildCount();
	int numCheckedItems = 0;
	for (int i = 0; i < childCount; i++) {
	CheckableFrameLayout c = (CheckableFrameLayout) mWallpapersView.getChildAt(i);
	if (c.isChecked()) {
	numCheckedItems++;
	}
	}
	return numCheckedItems;
	}

	// Called each time the action mode is shown. Always called after onCreateActionMode,
	// but may be called multiple times if the mode is invalidated.
	@Override
	public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
	int numCheckedItems = numCheckedItems();
	if (numCheckedItems == 0) {
	mode.finish();
	return true;
	} else {
	mode.setTitle(getResources().getQuantityString(
	R.plurals.number_of_items_selected, numCheckedItems, numCheckedItems));
	return true;
	}
	}

	// Called when the user selects a contextual menu item
	@Override
	public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
	int itemId = item.getItemId();
	if (itemId == R.id.menu_delete) {
	int childCount = mWallpapersView.getChildCount();
	ArrayList<View> viewsToRemove = new ArrayList<View>();
	for (int i = 0; i < childCount; i++) {
	CheckableFrameLayout c =
	(CheckableFrameLayout) mWallpapersView.getChildAt(i);
	if (c.isChecked()) {
	ThumbnailMetaData meta = (ThumbnailMetaData) c.getTag();
	mSavedImages.deleteImage(meta.mSavedWallpaperDbId);
	viewsToRemove.add(c);
	}
	}
	for (View v : viewsToRemove) {
	mWallpapersView.removeView(v);
	}
	///xxxxx DESTROYING
	mode.finish(); // Action picked, so close the CAB
	return true;
	} else {
	return false;
	}
	}

	// Called when the user exits the action mode
	@Override
	public void onDestroyActionMode(ActionMode mode) {
	int childCount = mWallpapersView.getChildCount();
	for (int i = 0; i < childCount; i++) {
	CheckableFrameLayout c = (CheckableFrameLayout) mWallpapersView.getChildAt(i);
	c.setChecked(false);
	}
	mSelectedThumb.setSelected(true);
	mActionMode = null;
	}
	};
	}
	protected void onSaveInstanceState(Bundle outState) {
	outState.putParcelableArrayList(TEMP_WALLPAPER_TILES, mTempWallpaperTiles);
	}

	protected void onRestoreInstanceState(Bundle savedInstanceState) {
	ArrayList<Uri> uris = savedInstanceState.getParcelableArrayList(TEMP_WALLPAPER_TILES);
	for (Uri uri : uris) {
	addTemporaryWallpaperTile(uri);
	}
	}

	private void populateWallpapersFromAdapter(ViewGroup parent, ImageAdapter ia,
	ArrayList<Integer> imageIds, boolean imagesAreResources, boolean addLongPressHandler) {
	for (int i = 0; i < ia.getCount(); i++) {
	FrameLayout thumbnail = (FrameLayout) ia.getView(i, null, parent);
	parent.addView(thumbnail, i);

	ThumbnailMetaData meta = new ThumbnailMetaData();
	if (imagesAreResources) {
	meta.mWallpaperResId = imageIds.get(i);
	} else {
	meta.mSavedWallpaperDbId = imageIds.get(i);
	}
	thumbnail.setTag(meta);
	if (addLongPressHandler) {
	addLongPressHandler(thumbnail);
	}
	thumbnail.setOnClickListener(mThumbnailOnClickListener);
	if (i == 0) {
	mThumbnailOnClickListener.onClick(thumbnail);
	}
	}
	}

	private Bitmap createThumbnail(Uri uri, byte[] imageBytes, boolean leftAligned) {
	Resources res = getResources();
	int width = res.getDimensionPixelSize(R.dimen.wallpaperThumbnailWidth);
	int height = res.getDimensionPixelSize(R.dimen.wallpaperThumbnailHeight);

	BitmapCropTask cropTask;
	if (uri != null) {
	cropTask = new BitmapCropTask(uri, null, width, height, false, true, null);
	} else {
	cropTask = new BitmapCropTask(imageBytes, null, width, height, false, true, null);
	}
	Point bounds = cropTask.getImageBounds();
	if (bounds == null) {
	return null;
	}

	RectF cropRect = WallpaperCropActivity.getMaxCropRect(
	bounds.x, bounds.y, width, height, leftAligned);
	cropTask.setCropBounds(cropRect);

	if (cropTask.cropBitmap()) {
	return cropTask.getCroppedBitmap();
	} else {
	return null;
	}
	}

	private void addTemporaryWallpaperTile(Uri uri) {
	mTempWallpaperTiles.add(uri);
	// Add a tile for the image picked from Gallery
	FrameLayout pickedImageThumbnail = (FrameLayout) getLayoutInflater().
	inflate(R.layout.wallpaper_picker_item, mWallpapersView, false);
	setWallpaperItemPaddingToZero(pickedImageThumbnail);

	// Load the thumbnail
	ImageView image = (ImageView) pickedImageThumbnail.findViewById(R.id.wallpaper_image);
	Bitmap thumb = createThumbnail(uri, null, false);
	if (thumb != null) {
	image.setImageBitmap(thumb);
	Drawable thumbDrawable = image.getDrawable();
	thumbDrawable.setDither(true);
	} else {
	Log.e(TAG, "Error loading thumbnail for uri=" + uri);
	}
	mWallpapersView.addView(pickedImageThumbnail, 1);

	ThumbnailMetaData meta = new ThumbnailMetaData();
	meta.mWallpaperUri = uri;
	pickedImageThumbnail.setTag(meta);
	pickedImageThumbnail.setOnClickListener(mThumbnailOnClickListener);
	mThumbnailOnClickListener.onClick(pickedImageThumbnail);
	}

	protected void onActivityResult(int requestCode, int resultCode, Intent data) {
	if (requestCode == IMAGE_PICK && resultCode == RESULT_OK) {
	Uri uri = data.getData();
	addTemporaryWallpaperTile(uri);
	} else if (requestCode == PICK_WALLPAPER_THIRD_PARTY_ACTIVITY) {
	// No result code is returned; just return
	setResult(RESULT_OK);
	finish();
	}
	}

	private static void setWallpaperItemPaddingToZero(FrameLayout frameLayout) {
	frameLayout.setPadding(0, 0, 0, 0);
	frameLayout.setForeground(new ZeroPaddingDrawable(frameLayout.getForeground()));
	}

	private void addLongPressHandler(View v) {
	v.setOnLongClickListener(mLongClickListener);
	}


	public boolean onMenuItemSelected(int featureId, MenuItem item) {
	if (item.getIntent() == null) {
	return super.onMenuItemSelected(featureId, item);
	} else {
	Utilities.startActivityForResultSafely(
	this, item.getIntent(), PICK_WALLPAPER_THIRD_PARTY_ACTIVITY);
	return true;
	}
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
	final Intent pickWallpaperIntent = new Intent(Intent.ACTION_SET_WALLPAPER);
	final PackageManager pm = getPackageManager();
	final List<ResolveInfo> apps =
	pm.queryIntentActivities(pickWallpaperIntent, 0);

	SubMenu sub = menu.addSubMenu("Other\u2026"); // TODO: what's the better way to do this?
	sub.getItem().setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);


	// Get list of image picker intents
	Intent pickImageIntent = new Intent(Intent.ACTION_GET_CONTENT);
	pickImageIntent.setType("image/*");
	final List<ResolveInfo> imagePickerActivities =
	pm.queryIntentActivities(pickImageIntent, 0);
	final ComponentName[] imageActivities = new ComponentName[imagePickerActivities.size()];
	for (int i = 0; i < imagePickerActivities.size(); i++) {
	ActivityInfo activityInfo = imagePickerActivities.get(i).activityInfo;
	imageActivities[i] = new ComponentName(activityInfo.packageName, activityInfo.name);
	}

	outerLoop:
	for (ResolveInfo info : apps) {
	final ComponentName itemComponentName =
	new ComponentName(info.activityInfo.packageName, info.activityInfo.name);
	final String itemPackageName = itemComponentName.getPackageName();
	// Exclude anything from our own package, and the old Launcher
	if (itemPackageName.equals(getPackageName()) \|\|
	itemPackageName.equals("com.android.launcher")) {
	continue;
	}
	// Exclude any package that already responds to the image picker intent
	for (ResolveInfo imagePickerActivityInfo : imagePickerActivities) {
	if (itemPackageName.equals(
	imagePickerActivityInfo.activityInfo.packageName)) {
	continue outerLoop;
	}
	}
	MenuItem mi = sub.add(info.loadLabel(pm));
	Intent launchIntent = new Intent(Intent.ACTION_SET_WALLPAPER);
	launchIntent.setComponent(itemComponentName);
	mi.setIntent(launchIntent);
	Drawable icon = info.loadIcon(pm);
	if (icon != null) {
	mi.setIcon(icon);
	}
	}
	return super.onCreateOptionsMenu(menu);
	}

	private void findBundledWallpapers() {
	mBundledWallpaperThumbs = new ArrayList<Drawable>(24);
	mBundledWallpaperResIds = new ArrayList<Integer>(24);

	Pair<ApplicationInfo, Integer> r = getWallpaperArrayResourceId();
	if (r != null) {
	try {
	mWallpaperResources = getPackageManager().getResourcesForApplication(r.first);
	addWallpapers(mWallpaperResources, r.first.packageName, r.second);
	} catch (PackageManager.NameNotFoundException e) {
	}
	}
	}

	public Pair<ApplicationInfo, Integer> getWallpaperArrayResourceId() {
	// Context.getPackageName() may return the "original" package name,
	// com.android.launcher3; Resources needs the real package name,
	// com.android.launcher3. So we ask Resources for what it thinks the
	// package name should be.
	final String packageName = getResources().getResourcePackageName(R.array.wallpapers);
	try {
	ApplicationInfo info = getPackageManager().getApplicationInfo(packageName, 0);
	return new Pair<ApplicationInfo, Integer>(info, R.array.wallpapers);
	} catch (PackageManager.NameNotFoundException e) {
	return null;
	}
	}

	private void addWallpapers(Resources resources, String packageName, int listResId) {
	final String[] extras = resources.getStringArray(listResId);
	for (String extra : extras) {
	int res = resources.getIdentifier(extra, "drawable", packageName);
	if (res != 0) {
	final int thumbRes = resources.getIdentifier(extra + "_small",
	"drawable", packageName);

	if (thumbRes != 0) {
	mBundledWallpaperThumbs.add(resources.getDrawable(thumbRes));
	mBundledWallpaperResIds.add(res);
	// Log.d(TAG, "add: [" + packageName + "]: " + extra + " (" + res + ")");
	}
	} else {
	Log.e(TAG, "Couldn't find wallpaper " + extra);
	}
	}
	}

	static class ZeroPaddingDrawable extends LevelListDrawable {
	public ZeroPaddingDrawable(Drawable d) {
	super();
	addLevel(0, 0, d);
	setLevel(0);
	}

	@Override
	public boolean getPadding(Rect padding) {
	padding.set(0, 0, 0, 0);
	return true;
	}
	}

	private static class ImageAdapter extends BaseAdapter implements ListAdapter, SpinnerAdapter {
	private LayoutInflater mLayoutInflater;
	private ArrayList<Drawable> mThumbs;

	ImageAdapter(Activity activity, ArrayList<Drawable> thumbs) {
	mLayoutInflater = activity.getLayoutInflater();
	mThumbs = thumbs;
	}

	public int getCount() {
	return mThumbs.size();
	}

	public Object getItem(int position) {
	return position;
	}

	public long getItemId(int position) {
	return position;
	}

	public View getView(int position, View convertView, ViewGroup parent) {
	View view;

	if (convertView == null) {
	view = mLayoutInflater.inflate(R.layout.wallpaper_picker_item, parent, false);
	} else {
	view = convertView;
	}

	setWallpaperItemPaddingToZero((FrameLayout) view);

	ImageView image = (ImageView) view.findViewById(R.id.wallpaper_image);

	Drawable thumbDrawable = mThumbs.get(position);
	if (thumbDrawable != null) {
	image.setImageDrawable(thumbDrawable);
	thumbDrawable.setDither(true);
	} else {
	Log.e(TAG, "Error decoding thumbnail for wallpaper #" + position);
	}

	return view;
	}
	}
	}