GalleryActionBar.java revision 5ccc96ac39f9513f13977de4419d814112c23ab8 
1/*
2 * Copyright (C) 2011 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.gallery3d.app;
18
19import com.android.gallery3d.R;
20
21import android.app.ActionBar;
22import android.app.Activity;
23import android.app.AlertDialog;
24import android.content.Context;
25import android.content.DialogInterface;
26import android.view.LayoutInflater;
27import android.view.Menu;
28import android.view.MenuItem;
29import android.view.View;
30import android.view.ViewGroup;
31import android.widget.BaseAdapter;
32import android.widget.ShareActionProvider;
33import android.widget.TextView;
34
35import java.util.ArrayList;
36
37public class GalleryActionBar implements ActionBar.OnNavigationListener {
38    private static final String TAG = "GalleryActionBar";
39
40    public interface ClusterRunner {
41        public void doCluster(int id);
42    }
43
44    private static class ActionItem {
45        public int action;
46        public boolean enabled;
47        public boolean visible;
48        public int spinnerTitle;
49        public int dialogTitle;
50        public int clusterBy;
51
52        public ActionItem(int action, boolean applied, boolean enabled, int title,
53                int clusterBy) {
54            this(action, applied, enabled, title, title, clusterBy);
55        }
56
57        public ActionItem(int action, boolean applied, boolean enabled, int spinnerTitle,
58                int dialogTitle, int clusterBy) {
59            this.action = action;
60            this.enabled = enabled;
61            this.spinnerTitle = spinnerTitle;
62            this.dialogTitle = dialogTitle;
63            this.clusterBy = clusterBy;
64            this.visible = true;
65        }
66    }
67
68    private static final ActionItem[] sClusterItems = new ActionItem[] {
69        new ActionItem(FilterUtils.CLUSTER_BY_ALBUM, true, false, R.string.albums,
70                R.string.group_by_album),
71        new ActionItem(FilterUtils.CLUSTER_BY_LOCATION, true, false,
72                R.string.locations, R.string.location, R.string.group_by_location),
73        new ActionItem(FilterUtils.CLUSTER_BY_TIME, true, false, R.string.times,
74                R.string.time, R.string.group_by_time),
75        new ActionItem(FilterUtils.CLUSTER_BY_FACE, true, false, R.string.people,
76                R.string.group_by_faces),
77        new ActionItem(FilterUtils.CLUSTER_BY_TAG, true, false, R.string.tags,
78                R.string.group_by_tags)
79    };
80
81    private class ClusterAdapter extends BaseAdapter {
82
83        public int getCount() {
84            return sClusterItems.length;
85        }
86
87        public Object getItem(int position) {
88            return sClusterItems[position];
89        }
90
91        public long getItemId(int position) {
92            return sClusterItems[position].action;
93        }
94
95        public View getView(int position, View convertView, ViewGroup parent) {
96            if (convertView == null) {
97                convertView = mInflater.inflate(R.layout.action_bar_text,
98                        parent, false);
99            }
100            TextView view = (TextView) convertView;
101            view.setText(sClusterItems[position].spinnerTitle);
102            return convertView;
103        }
104    }
105
106    private ClusterRunner mClusterRunner;
107    private CharSequence[] mTitles;
108    private ArrayList<Integer> mActions;
109    private Context mContext;
110    private LayoutInflater mInflater;
111    private GalleryActivity mActivity;
112    private ActionBar mActionBar;
113    private int mCurrentIndex;
114    private ClusterAdapter mAdapter = new ClusterAdapter();
115
116    public GalleryActionBar(GalleryActivity activity) {
117        mActionBar = ((Activity) activity).getActionBar();
118        mContext = activity.getAndroidContext();
119        mActivity = activity;
120        mInflater = ((Activity) mActivity).getLayoutInflater();
121        mCurrentIndex = 0;
122    }
123
124    public static int getHeight(Activity activity) {
125        ActionBar actionBar = activity.getActionBar();
126        return actionBar != null ? actionBar.getHeight() : 0;
127    }
128
129    private void createDialogData() {
130        ArrayList<CharSequence> titles = new ArrayList<CharSequence>();
131        mActions = new ArrayList<Integer>();
132        for (ActionItem item : sClusterItems) {
133            if (item.enabled && item.visible) {
134                titles.add(mContext.getString(item.dialogTitle));
135                mActions.add(item.action);
136            }
137        }
138        mTitles = new CharSequence[titles.size()];
139        titles.toArray(mTitles);
140    }
141
142    public void setClusterItemEnabled(int id, boolean enabled) {
143        for (ActionItem item : sClusterItems) {
144            if (item.action == id) {
145                item.enabled = enabled;
146                return;
147            }
148        }
149    }
150
151    public void setClusterItemVisibility(int id, boolean visible) {
152        for (ActionItem item : sClusterItems) {
153            if (item.action == id) {
154                item.visible = visible;
155                return;
156            }
157        }
158    }
159
160    public int getClusterTypeAction() {
161        return sClusterItems[mCurrentIndex].action;
162    }
163
164    public static String getClusterByTypeString(Context context, int type) {
165        for (ActionItem item : sClusterItems) {
166            if (item.action == type) {
167                return context.getString(item.clusterBy);
168            }
169        }
170        return null;
171    }
172
173    public static ShareActionProvider initializeShareActionProvider(Menu menu) {
174        MenuItem item = menu.findItem(R.id.action_share);
175        ShareActionProvider shareActionProvider = null;
176        if (item != null) {
177            shareActionProvider = (ShareActionProvider) item.getActionProvider();
178        }
179        return shareActionProvider;
180    }
181
182    public void showClusterMenu(int action, ClusterRunner runner) {
183        Log.v(TAG, "showClusterMenu: runner=" + runner);
184        // Don't set cluster runner until action bar is ready.
185        mClusterRunner = null;
186        mActionBar.setListNavigationCallbacks(mAdapter, this);
187        mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
188        setSelectedAction(action);
189        mClusterRunner = runner;
190    }
191
192    public void hideClusterMenu() {
193        mClusterRunner = null;
194        mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
195    }
196
197    public void showClusterDialog(final ClusterRunner clusterRunner) {
198        createDialogData();
199        final ArrayList<Integer> actions = mActions;
200        new AlertDialog.Builder(mContext).setTitle(R.string.group_by).setItems(
201                mTitles, new DialogInterface.OnClickListener() {
202            public void onClick(DialogInterface dialog, int which) {
203                clusterRunner.doCluster(actions.get(which).intValue());
204            }
205        }).create().show();
206    }
207
208    public void setTitle(String title) {
209        if (mActionBar != null) mActionBar.setTitle(title);
210    }
211
212    public void setTitle(int titleId) {
213        if (mActionBar != null) mActionBar.setTitle(titleId);
214    }
215
216    public void setSubtitle(String title) {
217        if (mActionBar != null) mActionBar.setSubtitle(title);
218    }
219
220    public void setNavigationMode(int mode) {
221        if (mActionBar != null) mActionBar.setNavigationMode(mode);
222    }
223
224    public int getHeight() {
225        return mActionBar == null ? 0 : mActionBar.getHeight();
226    }
227
228    public boolean setSelectedAction(int type) {
229        for (int i = 0, n = sClusterItems.length; i < n; i++) {
230            ActionItem item = sClusterItems[i];
231            if (item.visible && item.action == type) {
232                mActionBar.setSelectedNavigationItem(i);
233                mCurrentIndex = i;
234                return true;
235            }
236        }
237        return false;
238    }
239
240    @Override
241    public boolean onNavigationItemSelected(int itemPosition, long itemId) {
242        if (itemPosition != mCurrentIndex && mClusterRunner != null) {
243            mActivity.getGLRoot().lockRenderThread();
244            try {
245                mClusterRunner.doCluster(sClusterItems[itemPosition].action);
246            } finally {
247                mActivity.getGLRoot().unlockRenderThread();
248            }
249        }
250        return false;
251    }
252}
253