GalleryActionBar.java revision 89e7975ade04cea9df6dff285fe1c74425e4df7f 
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 android.annotation.TargetApi;
20import android.app.ActionBar;
21import android.app.ActionBar.OnMenuVisibilityListener;
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 com.android.gallery3d.R;
36import com.android.gallery3d.common.ApiHelper;
37
38import java.util.ArrayList;
39
40public class GalleryActionBar implements ActionBar.OnNavigationListener {
41    @SuppressWarnings("unused")
42    private static final String TAG = "GalleryActionBar";
43
44    private ClusterRunner mClusterRunner;
45    private CharSequence[] mTitles;
46    private ArrayList<Integer> mActions;
47    private Context mContext;
48    private LayoutInflater mInflater;
49    private GalleryActivity mActivity;
50    private ActionBar mActionBar;
51    private int mCurrentIndex;
52    private ClusterAdapter mAdapter = new ClusterAdapter();
53
54    public interface ClusterRunner {
55        public void doCluster(int id);
56    }
57
58    private static class ActionItem {
59        public int action;
60        public boolean enabled;
61        public boolean visible;
62        public int spinnerTitle;
63        public int dialogTitle;
64        public int clusterBy;
65
66        public ActionItem(int action, boolean applied, boolean enabled, int title,
67                int clusterBy) {
68            this(action, applied, enabled, title, title, clusterBy);
69        }
70
71        public ActionItem(int action, boolean applied, boolean enabled, int spinnerTitle,
72                int dialogTitle, int clusterBy) {
73            this.action = action;
74            this.enabled = enabled;
75            this.spinnerTitle = spinnerTitle;
76            this.dialogTitle = dialogTitle;
77            this.clusterBy = clusterBy;
78            this.visible = true;
79        }
80    }
81
82    private static final ActionItem[] sClusterItems = new ActionItem[] {
83        new ActionItem(FilterUtils.CLUSTER_BY_ALBUM, true, false, R.string.albums,
84                R.string.group_by_album),
85        new ActionItem(FilterUtils.CLUSTER_BY_LOCATION, true, false,
86                R.string.locations, R.string.location, R.string.group_by_location),
87        new ActionItem(FilterUtils.CLUSTER_BY_TIME, true, false, R.string.times,
88                R.string.time, R.string.group_by_time),
89        new ActionItem(FilterUtils.CLUSTER_BY_FACE, true, false, R.string.people,
90                R.string.group_by_faces),
91        new ActionItem(FilterUtils.CLUSTER_BY_TAG, true, false, R.string.tags,
92                R.string.group_by_tags)
93    };
94
95    private class ClusterAdapter extends BaseAdapter {
96
97        @Override
98        public int getCount() {
99            return sClusterItems.length;
100        }
101
102        @Override
103        public Object getItem(int position) {
104            return sClusterItems[position];
105        }
106
107        @Override
108        public long getItemId(int position) {
109            return sClusterItems[position].action;
110        }
111
112        @Override
113        public View getView(int position, View convertView, ViewGroup parent) {
114            if (convertView == null) {
115                convertView = mInflater.inflate(R.layout.action_bar_text,
116                        parent, false);
117            }
118            TextView view = (TextView) convertView;
119            view.setText(sClusterItems[position].spinnerTitle);
120            return convertView;
121        }
122    }
123
124    public static String getClusterByTypeString(Context context, int type) {
125        for (ActionItem item : sClusterItems) {
126            if (item.action == type) {
127                return context.getString(item.clusterBy);
128            }
129        }
130        return null;
131    }
132
133    public static ShareActionProvider initializeShareActionProvider(Menu menu) {
134        MenuItem item = menu.findItem(R.id.action_share);
135        ShareActionProvider shareActionProvider = null;
136        if (item != null) {
137            shareActionProvider = (ShareActionProvider) item.getActionProvider();
138        }
139        return shareActionProvider;
140    }
141
142    public GalleryActionBar(GalleryActivity activity) {
143        mActionBar = ((Activity) activity).getActionBar();
144        mContext = activity.getAndroidContext();
145        mActivity = activity;
146        mInflater = ((Activity) mActivity).getLayoutInflater();
147        mCurrentIndex = 0;
148    }
149
150    private void createDialogData() {
151        ArrayList<CharSequence> titles = new ArrayList<CharSequence>();
152        mActions = new ArrayList<Integer>();
153        for (ActionItem item : sClusterItems) {
154            if (item.enabled && item.visible) {
155                titles.add(mContext.getString(item.dialogTitle));
156                mActions.add(item.action);
157            }
158        }
159        mTitles = new CharSequence[titles.size()];
160        titles.toArray(mTitles);
161    }
162
163    public int getHeight() {
164        return mActionBar != null ? mActionBar.getHeight() : 0;
165    }
166
167    public void setClusterItemEnabled(int id, boolean enabled) {
168        for (ActionItem item : sClusterItems) {
169            if (item.action == id) {
170                item.enabled = enabled;
171                return;
172            }
173        }
174    }
175
176    public void setClusterItemVisibility(int id, boolean visible) {
177        for (ActionItem item : sClusterItems) {
178            if (item.action == id) {
179                item.visible = visible;
180                return;
181            }
182        }
183    }
184
185    public int getClusterTypeAction() {
186        return sClusterItems[mCurrentIndex].action;
187    }
188
189    public void enableClusterMenu(int action, ClusterRunner runner) {
190        if (mActionBar != null) {
191            // Don't set cluster runner until action bar is ready.
192            mClusterRunner = null;
193            mActionBar.setListNavigationCallbacks(mAdapter, this);
194            mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_LIST);
195            setSelectedAction(action);
196            mClusterRunner = runner;
197        }
198    }
199
200    // The only use case not to hideMenu in this method is to ensure
201    // all elements disappear at the same time when exiting gallery.
202    // hideMenu should always be true in all other cases.
203    public void disableClusterMenu(boolean hideMenu) {
204        if (mActionBar != null) {
205            mClusterRunner = null;
206            if (hideMenu) {
207                mActionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
208            }
209        }
210    }
211
212    public void showClusterDialog(final ClusterRunner clusterRunner) {
213        createDialogData();
214        final ArrayList<Integer> actions = mActions;
215        new AlertDialog.Builder(mContext).setTitle(R.string.group_by).setItems(
216                mTitles, new DialogInterface.OnClickListener() {
217            @Override
218            public void onClick(DialogInterface dialog, int which) {
219                // Need to lock rendering when operations invoked by system UI (main thread) are
220                // modifying slot data used in GL thread for rendering.
221                mActivity.getGLRoot().lockRenderThread();
222                try {
223                    clusterRunner.doCluster(actions.get(which).intValue());
224                } finally {
225                    mActivity.getGLRoot().unlockRenderThread();
226                }
227            }
228        }).create().show();
229    }
230
231    @TargetApi(ApiHelper.VERSION_CODES.ICE_CREAM_SANDWICH)
232    private void setHomeButtonEnabled(boolean enabled) {
233        if (ApiHelper.HAS_ACTION_BAR_SET_HOME_BUTTON_ENABLED) {
234            mActionBar.setHomeButtonEnabled(enabled);
235        }
236    }
237
238    public void setDisplayOptions(boolean displayHomeAsUp, boolean showTitle) {
239        if (mActionBar != null) {
240            int options = (displayHomeAsUp ? ActionBar.DISPLAY_HOME_AS_UP : 0) |
241                    (showTitle ? ActionBar.DISPLAY_SHOW_TITLE : 0);
242            mActionBar.setDisplayOptions(options,
243                    ActionBar.DISPLAY_HOME_AS_UP | ActionBar.DISPLAY_SHOW_TITLE);
244            setHomeButtonEnabled(displayHomeAsUp);
245        }
246    }
247
248    public void setTitle(String title) {
249        if (mActionBar != null) mActionBar.setTitle(title);
250    }
251
252    public void setTitle(int titleId) {
253        if (mActionBar != null) mActionBar.setTitle(titleId);
254    }
255
256    public void setSubtitle(String title) {
257        if (mActionBar != null) mActionBar.setSubtitle(title);
258    }
259
260    public void show() {
261        if (mActionBar != null) mActionBar.show();
262    }
263
264    public void hide() {
265        if (mActionBar != null) mActionBar.hide();
266    }
267
268    public void addOnMenuVisibilityListener(OnMenuVisibilityListener listener) {
269        if (mActionBar != null) mActionBar.addOnMenuVisibilityListener(listener);
270    }
271
272    public void removeOnMenuVisibilityListener(OnMenuVisibilityListener listener) {
273        if (mActionBar != null) mActionBar.removeOnMenuVisibilityListener(listener);
274    }
275
276    public boolean setSelectedAction(int type) {
277        if (mActionBar == null) return false;
278
279        for (int i = 0, n = sClusterItems.length; i < n; i++) {
280            ActionItem item = sClusterItems[i];
281            if (item.action == type) {
282                mActionBar.setSelectedNavigationItem(i);
283                mCurrentIndex = i;
284                return true;
285            }
286        }
287        return false;
288    }
289
290    @Override
291    public boolean onNavigationItemSelected(int itemPosition, long itemId) {
292        if (itemPosition != mCurrentIndex && mClusterRunner != null) {
293            // Need to lock rendering when operations invoked by system UI (main thread) are
294            // modifying slot data used in GL thread for rendering.
295            mActivity.getGLRoot().lockRenderThread();
296            try {
297                mClusterRunner.doCluster(sClusterItems[itemPosition].action);
298            } finally {
299                mActivity.getGLRoot().unlockRenderThread();
300            }
301        }
302        return false;
303    }
304}
305