src/com/android/photos/MultiChoiceManager.java - LeafOS-Project/android_packages_apps_Gallery2 - 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.photos;

 import android.app.Activity;
 import android.content.Context;
 import android.content.Intent;
 import android.net.Uri;
 import android.os.AsyncTask;
 import android.provider.MediaStore.Files.FileColumns;
 import android.util.SparseBooleanArray;
 import android.view.ActionMode;
 import android.view.Menu;
 import android.view.MenuInflater;
 import android.view.MenuItem;
 import android.widget.AbsListView.MultiChoiceModeListener;

 import com.android.gallery3d.R;
 import com.android.gallery3d.app.TrimVideo;
 import com.android.gallery3d.data.MediaObject;
 import com.android.gallery3d.filtershow.FilterShowActivity;
 import com.android.gallery3d.filtershow.crop.CropActivity;
 import com.android.gallery3d.util.GalleryUtils;

 import java.util.ArrayList;
 import java.util.List;

 public class MultiChoiceManager implements MultiChoiceModeListener,
     SelectionManager.SelectedUriSource {

     public interface Provider {
         public MultiChoiceManager getMultiChoiceManager();
     }

     public interface Delegate {
         public SparseBooleanArray getSelectedItemPositions();
         public int getSelectedItemCount();
         public int getItemMediaType(Object item);
         public int getItemSupportedOperations(Object item);
         public ArrayList<Uri> getSubItemUrisForItem(Object item);
         public Uri getItemUri(Object item);
         public Object getItemAtPosition(int position);
         public Object getPathForItemAtPosition(int position);
         public void deleteItemWithPath(Object itemPath);
     }

     private SelectionManager mSelectionManager;
     private ActionMode mActionMode;
     private Context mContext;
     private Delegate mDelegate;

     private ArrayList<Uri> mSelectedShareableUrisArray = new ArrayList<Uri>();

     public MultiChoiceManager(Activity activity) {
         mContext = activity;
         mSelectionManager = new SelectionManager(activity);
     }

     public void setDelegate(Delegate delegate) {
         if (mDelegate == delegate) {
             return;
         }
         if (mActionMode != null) {
             mActionMode.finish();
         }
         mDelegate = delegate;
     }

     @Override
     public ArrayList<Uri> getSelectedShareableUris() {
         return mSelectedShareableUrisArray;
     }

     private void updateSelectedTitle(ActionMode mode) {
         int count = mDelegate.getSelectedItemCount();
         mode.setTitle(mContext.getResources().getQuantityString(
                 R.plurals.number_of_items_selected, count, count));
     }

     private String getItemMimetype(Object item) {
         int type = mDelegate.getItemMediaType(item);
         if (type == FileColumns.MEDIA_TYPE_IMAGE) {
             return GalleryUtils.MIME_TYPE_IMAGE;
         } else if (type == FileColumns.MEDIA_TYPE_VIDEO) {
             return GalleryUtils.MIME_TYPE_VIDEO;
         } else {
             return GalleryUtils.MIME_TYPE_ALL;
         }
     }

     @Override
     public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
             boolean checked) {
         updateSelectedTitle(mode);
         Object item = mDelegate.getItemAtPosition(position);

         int supported = mDelegate.getItemSupportedOperations(item);

         if ((supported & MediaObject.SUPPORT_SHARE) > 0) {
             ArrayList<Uri> subItems = mDelegate.getSubItemUrisForItem(item);
             if (checked) {
                 mSelectedShareableUrisArray.addAll(subItems);
             } else {
                 mSelectedShareableUrisArray.removeAll(subItems);
             }
         }

         mSelectionManager.onItemSelectedStateChanged(
                 mDelegate.getItemMediaType(item),
                 supported,
                 checked);
         updateActionItemVisibilities(mode.getMenu(),
                 mSelectionManager.getSupportedOperations());
     }

     private void updateActionItemVisibilities(Menu menu, int supportedOperations) {
         MenuItem editItem = menu.findItem(R.id.menu_edit);
         MenuItem deleteItem = menu.findItem(R.id.menu_delete);
         MenuItem shareItem = menu.findItem(R.id.menu_share);
         MenuItem cropItem = menu.findItem(R.id.menu_crop);
         MenuItem trimItem = menu.findItem(R.id.menu_trim);
         MenuItem muteItem = menu.findItem(R.id.menu_mute);

         editItem.setVisible((supportedOperations & MediaObject.SUPPORT_EDIT) > 0);
         deleteItem.setVisible((supportedOperations & MediaObject.SUPPORT_DELETE) > 0);
         shareItem.setVisible((supportedOperations & MediaObject.SUPPORT_SHARE) > 0);
         cropItem.setVisible((supportedOperations & MediaObject.SUPPORT_CROP) > 0);
         trimItem.setVisible((supportedOperations & MediaObject.SUPPORT_TRIM) > 0);
         muteItem.setVisible((supportedOperations & MediaObject.SUPPORT_MUTE) > 0);
     }

     @Override
     public boolean onCreateActionMode(ActionMode mode, Menu menu) {
         mSelectionManager.setSelectedUriSource(this);
         mActionMode = mode;
         MenuInflater inflater = mode.getMenuInflater();
         inflater.inflate(R.menu.gallery_multiselect, menu);
         MenuItem menuItem = menu.findItem(R.id.menu_share);
         if (menuItem != null) {
             menuItem.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
                 @Override
                 public boolean onMenuItemClick(MenuItem item) {
                     mActionMode.finish();
                     Intent shareIntent = mSelectionManager.getShareIntent();
                     if (shareIntent != null) {
                         Intent intent = Intent.createChooser(shareIntent, null);
                         intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                         mContext.startActivity(intent);
                     }
                     return true;
                 }
             });
         }
         updateSelectedTitle(mode);
         return true;
     }

     @Override
     public void onDestroyActionMode(ActionMode mode) {
         // onDestroyActionMode gets called when the share target was selected,
         // but apparently before the ArrayList is serialized in the intent
         // so we can't clear the old one here.
         mSelectedShareableUrisArray = new ArrayList<Uri>();
         mSelectionManager.onClearSelection();
         mSelectionManager.setSelectedUriSource(null);
         mActionMode = null;
     }

     @Override
     public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
         updateSelectedTitle(mode);
         return false;
     }

     private static class BulkDeleteTask extends AsyncTask<Void, Void, Void> {
         private Delegate mDelegate;
         private List<Object> mPaths;

         public BulkDeleteTask(Delegate delegate, List<Object> paths) {
             mDelegate = delegate;
             mPaths = paths;
         }

         @Override
         protected Void doInBackground(Void... ignored) {
             for (Object path : mPaths) {
                 mDelegate.deleteItemWithPath(path);
             }
             return null;
         }
     }

     @Override
     public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
         int actionItemId = item.getItemId();
         switch (actionItemId) {
             case R.id.menu_delete:
                 BulkDeleteTask deleteTask = new BulkDeleteTask(mDelegate,
                         getPathsForSelectedItems());
                 deleteTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
                 mode.finish();
                 return true;
             case R.id.menu_edit:
             case R.id.menu_crop:
             case R.id.menu_trim:
             case R.id.menu_mute:
                 singleItemAction(getSelectedItem(), actionItemId);
                 mode.finish();
                 return true;
             default:
                 return false;
         }
     }

     private void singleItemAction(Object item, int actionItemId) {
         Intent intent = new Intent();
         String mime = getItemMimetype(item);
         Uri uri = mDelegate.getItemUri(item);
         switch (actionItemId) {
             case R.id.menu_edit:
                 intent.setDataAndType(uri, mime)
                       .setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
                       .setAction(Intent.ACTION_EDIT);
                 mContext.startActivity(Intent.createChooser(intent, null));
                 return;
             case R.id.menu_crop:
                 intent.setDataAndType(uri, mime)
                       .setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
                       .setAction(CropActivity.CROP_ACTION)
                       .setClass(mContext, FilterShowActivity.class);
                 mContext.startActivity(intent);
                 return;
             case R.id.menu_trim:
                 intent.setData(uri)
                       .setClass(mContext, TrimVideo.class);
                 mContext.startActivity(intent);
                 return;
             case R.id.menu_mute:
                 /* TODO need a way to get the file path of an item
                 MuteVideo muteVideo = new MuteVideo(filePath,
                         uri, (Activity) mContext);
                 muteVideo.muteInBackground();
                 */
                 return;
             default:
                 return;
         }
     }

     private List<Object> getPathsForSelectedItems() {
         List<Object> paths = new ArrayList<Object>();
         SparseBooleanArray selected = mDelegate.getSelectedItemPositions();
         for (int i = 0; i < selected.size(); i++) {
             if (selected.valueAt(i)) {
                 paths.add(mDelegate.getPathForItemAtPosition(i));
             }
         }
         return paths;
     }

     public Object getSelectedItem() {
         if (mDelegate.getSelectedItemCount() != 1) {
             return null;
         }
         SparseBooleanArray selected = mDelegate.getSelectedItemPositions();
         for (int i = 0; i < selected.size(); i++) {
             if (selected.valueAt(i)) {
                 return mDelegate.getItemAtPosition(selected.keyAt(i));
             }
         }
         return null;
     }
 }
	/*
	* 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.photos;

	import android.app.Activity;
	import android.content.Context;
	import android.content.Intent;
	import android.net.Uri;
	import android.os.AsyncTask;
	import android.provider.MediaStore.Files.FileColumns;
	import android.util.SparseBooleanArray;
	import android.view.ActionMode;
	import android.view.Menu;
	import android.view.MenuInflater;
	import android.view.MenuItem;
	import android.widget.AbsListView.MultiChoiceModeListener;

	import com.android.gallery3d.R;
	import com.android.gallery3d.app.TrimVideo;
	import com.android.gallery3d.data.MediaObject;
	import com.android.gallery3d.filtershow.FilterShowActivity;
	import com.android.gallery3d.filtershow.crop.CropActivity;
	import com.android.gallery3d.util.GalleryUtils;

	import java.util.ArrayList;
	import java.util.List;

	public class MultiChoiceManager implements MultiChoiceModeListener,
	SelectionManager.SelectedUriSource {

	public interface Provider {
	public MultiChoiceManager getMultiChoiceManager();
	}

	public interface Delegate {
	public SparseBooleanArray getSelectedItemPositions();
	public int getSelectedItemCount();
	public int getItemMediaType(Object item);
	public int getItemSupportedOperations(Object item);
	public ArrayList<Uri> getSubItemUrisForItem(Object item);
	public Uri getItemUri(Object item);
	public Object getItemAtPosition(int position);
	public Object getPathForItemAtPosition(int position);
	public void deleteItemWithPath(Object itemPath);
	}

	private SelectionManager mSelectionManager;
	private ActionMode mActionMode;
	private Context mContext;
	private Delegate mDelegate;

	private ArrayList<Uri> mSelectedShareableUrisArray = new ArrayList<Uri>();

	public MultiChoiceManager(Activity activity) {
	mContext = activity;
	mSelectionManager = new SelectionManager(activity);
	}

	public void setDelegate(Delegate delegate) {
	if (mDelegate == delegate) {
	return;
	}
	if (mActionMode != null) {
	mActionMode.finish();
	}
	mDelegate = delegate;
	}

	@Override
	public ArrayList<Uri> getSelectedShareableUris() {
	return mSelectedShareableUrisArray;
	}

	private void updateSelectedTitle(ActionMode mode) {
	int count = mDelegate.getSelectedItemCount();
	mode.setTitle(mContext.getResources().getQuantityString(
	R.plurals.number_of_items_selected, count, count));
	}

	private String getItemMimetype(Object item) {
	int type = mDelegate.getItemMediaType(item);
	if (type == FileColumns.MEDIA_TYPE_IMAGE) {
	return GalleryUtils.MIME_TYPE_IMAGE;
	} else if (type == FileColumns.MEDIA_TYPE_VIDEO) {
	return GalleryUtils.MIME_TYPE_VIDEO;
	} else {
	return GalleryUtils.MIME_TYPE_ALL;
	}
	}

	@Override
	public void onItemCheckedStateChanged(ActionMode mode, int position, long id,
	boolean checked) {
	updateSelectedTitle(mode);
	Object item = mDelegate.getItemAtPosition(position);

	int supported = mDelegate.getItemSupportedOperations(item);

	if ((supported & MediaObject.SUPPORT_SHARE) > 0) {
	ArrayList<Uri> subItems = mDelegate.getSubItemUrisForItem(item);
	if (checked) {
	mSelectedShareableUrisArray.addAll(subItems);
	} else {
	mSelectedShareableUrisArray.removeAll(subItems);
	}
	}

	mSelectionManager.onItemSelectedStateChanged(
	mDelegate.getItemMediaType(item),
	supported,
	checked);
	updateActionItemVisibilities(mode.getMenu(),
	mSelectionManager.getSupportedOperations());
	}

	private void updateActionItemVisibilities(Menu menu, int supportedOperations) {
	MenuItem editItem = menu.findItem(R.id.menu_edit);
	MenuItem deleteItem = menu.findItem(R.id.menu_delete);
	MenuItem shareItem = menu.findItem(R.id.menu_share);
	MenuItem cropItem = menu.findItem(R.id.menu_crop);
	MenuItem trimItem = menu.findItem(R.id.menu_trim);
	MenuItem muteItem = menu.findItem(R.id.menu_mute);

	editItem.setVisible((supportedOperations & MediaObject.SUPPORT_EDIT) > 0);
	deleteItem.setVisible((supportedOperations & MediaObject.SUPPORT_DELETE) > 0);
	shareItem.setVisible((supportedOperations & MediaObject.SUPPORT_SHARE) > 0);
	cropItem.setVisible((supportedOperations & MediaObject.SUPPORT_CROP) > 0);
	trimItem.setVisible((supportedOperations & MediaObject.SUPPORT_TRIM) > 0);
	muteItem.setVisible((supportedOperations & MediaObject.SUPPORT_MUTE) > 0);
	}

	@Override
	public boolean onCreateActionMode(ActionMode mode, Menu menu) {
	mSelectionManager.setSelectedUriSource(this);
	mActionMode = mode;
	MenuInflater inflater = mode.getMenuInflater();
	inflater.inflate(R.menu.gallery_multiselect, menu);
	MenuItem menuItem = menu.findItem(R.id.menu_share);
	if (menuItem != null) {
	menuItem.setOnMenuItemClickListener(new MenuItem.OnMenuItemClickListener() {
	@Override
	public boolean onMenuItemClick(MenuItem item) {
	mActionMode.finish();
	Intent shareIntent = mSelectionManager.getShareIntent();
	if (shareIntent != null) {
	Intent intent = Intent.createChooser(shareIntent, null);
	intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
	mContext.startActivity(intent);
	}
	return true;
	}
	});
	}
	updateSelectedTitle(mode);
	return true;
	}

	@Override
	public void onDestroyActionMode(ActionMode mode) {
	// onDestroyActionMode gets called when the share target was selected,
	// but apparently before the ArrayList is serialized in the intent
	// so we can't clear the old one here.
	mSelectedShareableUrisArray = new ArrayList<Uri>();
	mSelectionManager.onClearSelection();
	mSelectionManager.setSelectedUriSource(null);
	mActionMode = null;
	}

	@Override
	public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
	updateSelectedTitle(mode);
	return false;
	}

	private static class BulkDeleteTask extends AsyncTask<Void, Void, Void> {
	private Delegate mDelegate;
	private List<Object> mPaths;

	public BulkDeleteTask(Delegate delegate, List<Object> paths) {
	mDelegate = delegate;
	mPaths = paths;
	}

	@Override
	protected Void doInBackground(Void... ignored) {
	for (Object path : mPaths) {
	mDelegate.deleteItemWithPath(path);
	}
	return null;
	}
	}

	@Override
	public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
	int actionItemId = item.getItemId();
	switch (actionItemId) {
	case R.id.menu_delete:
	BulkDeleteTask deleteTask = new BulkDeleteTask(mDelegate,
	getPathsForSelectedItems());
	deleteTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
	mode.finish();
	return true;
	case R.id.menu_edit:
	case R.id.menu_crop:
	case R.id.menu_trim:
	case R.id.menu_mute:
	singleItemAction(getSelectedItem(), actionItemId);
	mode.finish();
	return true;
	default:
	return false;
	}
	}

	private void singleItemAction(Object item, int actionItemId) {
	Intent intent = new Intent();
	String mime = getItemMimetype(item);
	Uri uri = mDelegate.getItemUri(item);
	switch (actionItemId) {
	case R.id.menu_edit:
	intent.setDataAndType(uri, mime)
	.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
	.setAction(Intent.ACTION_EDIT);
	mContext.startActivity(Intent.createChooser(intent, null));
	return;
	case R.id.menu_crop:
	intent.setDataAndType(uri, mime)
	.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
	.setAction(CropActivity.CROP_ACTION)
	.setClass(mContext, FilterShowActivity.class);
	mContext.startActivity(intent);
	return;
	case R.id.menu_trim:
	intent.setData(uri)
	.setClass(mContext, TrimVideo.class);
	mContext.startActivity(intent);
	return;
	case R.id.menu_mute:
	/* TODO need a way to get the file path of an item
	MuteVideo muteVideo = new MuteVideo(filePath,
	uri, (Activity) mContext);
	muteVideo.muteInBackground();
	*/
	return;
	default:
	return;
	}
	}

	private List<Object> getPathsForSelectedItems() {
	List<Object> paths = new ArrayList<Object>();
	SparseBooleanArray selected = mDelegate.getSelectedItemPositions();
	for (int i = 0; i < selected.size(); i++) {
	if (selected.valueAt(i)) {
	paths.add(mDelegate.getPathForItemAtPosition(i));
	}
	}
	return paths;
	}

	public Object getSelectedItem() {
	if (mDelegate.getSelectedItemCount() != 1) {
	return null;
	}
	SparseBooleanArray selected = mDelegate.getSelectedItemPositions();
	for (int i = 0; i < selected.size(); i++) {
	if (selected.valueAt(i)) {
	return mDelegate.getItemAtPosition(selected.keyAt(i));
	}
	}
	return null;
	}
	}