it.gulch.linuxday.android.widgets.BookmarksMultiChoiceModeListener.java Source code

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Here is the source code for it.gulch.linuxday.android.widgets.BookmarksMultiChoiceModeListener.java

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/*
 * Copyright 2014 Christophe Beyls
 *
 * 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 it.gulch.linuxday.android.widgets;

import android.annotation.TargetApi;
import android.os.AsyncTask;
import android.os.Build;
import android.view.ActionMode;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AbsListView;
import android.widget.AbsListView.MultiChoiceModeListener;

import org.apache.commons.collections4.CollectionUtils;
import org.apache.commons.lang3.ArrayUtils;

import java.sql.SQLException;
import java.util.Arrays;
import java.util.List;

import it.gulch.linuxday.android.R;
import it.gulch.linuxday.android.db.manager.BookmarkManager;

/**
 * Context menu for the bookmarks list items, available for API 11+ only.
 *
 * @author Christophe Beyls
 */
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public class BookmarksMultiChoiceModeListener implements MultiChoiceModeListener {
    private AbsListView listView;

    private BookmarkManager bookmarkManager;

    public static void register(AbsListView listView, BookmarkManager bookmarkManager) {
        listView.setChoiceMode(AbsListView.CHOICE_MODE_MULTIPLE_MODAL);
        BookmarksMultiChoiceModeListener listener = new BookmarksMultiChoiceModeListener(listView, bookmarkManager);
        listView.setMultiChoiceModeListener(listener);
    }

    private BookmarksMultiChoiceModeListener(AbsListView listView, BookmarkManager bookmarkManager) {
        this.listView = listView;
        this.bookmarkManager = bookmarkManager;
    }

    @Override
    public boolean onCreateActionMode(ActionMode mode, Menu menu) {
        updateSelectedCountDisplay(mode);
        return true;
    }

    private void updateSelectedCountDisplay(ActionMode mode) {
        int count = listView.getCheckedItemCount();
        mode.setTitle(listView.getContext().getResources().getQuantityString(R.plurals.selected, count, count));
    }

    @Override
    public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
        mode.getMenuInflater().inflate(R.menu.action_mode_bookmarks, menu);
        return true;
    }

    @Override
    public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
        switch (item.getItemId()) {
        case R.id.delete:
            // Remove multiple bookmarks at once
            long[] checkedItemIds = listView.getCheckedItemIds();
            List<Long> checkedItemIdsList = Arrays.asList(ArrayUtils.toObject(checkedItemIds));
            new RemoveBookmarksAsyncTask().execute(checkedItemIdsList);
            mode.finish();
            return true;
        }

        return false;
    }

    @Override
    public void onItemCheckedStateChanged(ActionMode mode, int position, long id, boolean checked) {
        updateSelectedCountDisplay(mode);
    }

    @Override
    public void onDestroyActionMode(ActionMode mode) {
    }

    private class RemoveBookmarksAsyncTask extends AsyncTask<List<Long>, Void, Void> {
        @Override
        protected Void doInBackground(List<Long>... params) {
            try {
                bookmarkManager.removeBookmarksByEventId(params[0]);
            } catch (SQLException e) {
                // FIXME
                e.printStackTrace();
            }

            return null;
        }
    }
}