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Diffstat (limited to 'src/com/android/photos/MultiChoiceManager.java')
| -rw-r--r-- | src/com/android/photos/MultiChoiceManager.java | 295 |
1 files changed, 295 insertions, 0 deletions
diff --git a/src/com/android/photos/MultiChoiceManager.java b/src/com/android/photos/MultiChoiceManager.java new file mode 100644 index 000000000..49519ca63 --- /dev/null +++ b/src/com/android/photos/MultiChoiceManager.java @@ -0,0 +1,295 @@ +/* + * 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 android.widget.ShareActionProvider; +import android.widget.ShareActionProvider.OnShareTargetSelectedListener; + +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, + OnShareTargetSelectedListener, 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 ShareActionProvider mShareActionProvider; + 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(mShareActionProvider, + 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); + MenuItem setAsItem = menu.findItem(R.id.menu_set_as); + + 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); + setAsItem.setVisible((supportedOperations & MediaObject.SUPPORT_SETAS) > 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); + mShareActionProvider = (ShareActionProvider) menuItem.getActionProvider(); + mShareActionProvider.setOnShareTargetSelectedListener(this); + 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); + mShareActionProvider = null; + mActionMode = null; + } + + @Override + public boolean onPrepareActionMode(ActionMode mode, Menu menu) { + updateSelectedTitle(mode); + return false; + } + + @Override + public boolean onShareTargetSelected(ShareActionProvider provider, Intent intent) { + mActionMode.finish(); + 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: + case R.id.menu_set_as: + 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; + case R.id.menu_set_as: + intent.setDataAndType(uri, mime) + .setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION) + .setAction(Intent.ACTION_ATTACH_DATA) + .putExtra("mimeType", mime); + mContext.startActivity(Intent.createChooser( + intent, mContext.getString(R.string.set_as))); + 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; + } +} |