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.contacts.group;
18
19import android.app.Activity;
20import android.app.Fragment;
21import android.app.LoaderManager;
22import android.app.LoaderManager.LoaderCallbacks;
23import android.content.ContentUris;
24import android.content.Context;
25import android.content.CursorLoader;
26import android.content.Intent;
27import android.content.Loader;
28import android.content.res.Resources;
29import android.database.Cursor;
30import android.graphics.Rect;
31import android.net.Uri;
32import android.os.Bundle;
33import android.provider.ContactsContract.Groups;
34import android.text.TextUtils;
35import android.util.Log;
36import android.view.LayoutInflater;
37import android.view.Menu;
38import android.view.MenuInflater;
39import android.view.MenuItem;
40import android.view.View;
41import android.view.View.OnClickListener;
42import android.view.ViewGroup;
43import android.widget.AbsListView;
44import android.widget.AbsListView.OnScrollListener;
45import android.widget.ListView;
46import android.widget.TextView;
47
48import com.android.contacts.ContactPhotoManager;
49import com.android.contacts.GroupMemberLoader;
50import com.android.contacts.GroupMetaDataLoader;
51import com.android.contacts.R;
52import com.android.contacts.interactions.GroupDeletionDialogFragment;
53import com.android.contacts.list.ContactTileAdapter;
54import com.android.contacts.list.ContactTileAdapter.DisplayType;
55import com.android.contacts.list.ContactTileView;
56import com.android.contacts.model.AccountTypeManager;
57import com.android.contacts.model.account.AccountType;
58
59/**
60 * Displays the details of a group and shows a list of actions possible for the group.
61 */
62public class GroupDetailFragment extends Fragment implements OnScrollListener {
63
64    public static interface Listener {
65        /**
66         * The group title has been loaded
67         */
68        public void onGroupTitleUpdated(String title);
69
70        /**
71         * The number of group members has been determined
72         */
73        public void onGroupSizeUpdated(String size);
74
75        /**
76         * The account type and dataset have been determined.
77         */
78        public void onAccountTypeUpdated(String accountTypeString, String dataSet);
79
80        /**
81         * User decided to go to Edit-Mode
82         */
83        public void onEditRequested(Uri groupUri);
84
85        /**
86         * Contact is selected and should launch details page
87         */
88        public void onContactSelected(Uri contactUri);
89    }
90
91    private static final String TAG = "GroupDetailFragment";
92
93    private static final int LOADER_METADATA = 0;
94    private static final int LOADER_MEMBERS = 1;
95
96    private Context mContext;
97
98    private View mRootView;
99    private ViewGroup mGroupSourceViewContainer;
100    private View mGroupSourceView;
101    private TextView mGroupTitle;
102    private TextView mGroupSize;
103    private ListView mMemberListView;
104    private View mEmptyView;
105
106    private Listener mListener;
107
108    private ContactTileAdapter mAdapter;
109    private ContactPhotoManager mPhotoManager;
110    private AccountTypeManager mAccountTypeManager;
111
112    private Uri mGroupUri;
113    private long mGroupId;
114    private String mGroupName;
115    private String mAccountTypeString;
116    private String mDataSet;
117    private boolean mIsReadOnly;
118
119    private boolean mShowGroupActionInActionBar;
120    private boolean mOptionsMenuGroupDeletable;
121    private boolean mOptionsMenuGroupPresent;
122    private boolean mCloseActivityAfterDelete;
123
124    public GroupDetailFragment() {
125    }
126
127    @Override
128    public void onAttach(Activity activity) {
129        super.onAttach(activity);
130        mContext = activity;
131        mAccountTypeManager = AccountTypeManager.getInstance(mContext);
132
133        Resources res = getResources();
134        int columnCount = res.getInteger(R.integer.contact_tile_column_count);
135
136        mAdapter = new ContactTileAdapter(activity, mContactTileListener, columnCount,
137                DisplayType.GROUP_MEMBERS);
138
139        configurePhotoLoader();
140    }
141
142    @Override
143    public void onDetach() {
144        super.onDetach();
145        mContext = null;
146    }
147
148    @Override
149    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
150        setHasOptionsMenu(true);
151        mRootView = inflater.inflate(R.layout.group_detail_fragment, container, false);
152        mGroupTitle = (TextView) mRootView.findViewById(R.id.group_title);
153        mGroupSize = (TextView) mRootView.findViewById(R.id.group_size);
154        mGroupSourceViewContainer = (ViewGroup) mRootView.findViewById(
155                R.id.group_source_view_container);
156        mEmptyView = mRootView.findViewById(android.R.id.empty);
157        mMemberListView = (ListView) mRootView.findViewById(android.R.id.list);
158        mMemberListView.setItemsCanFocus(true);
159        mMemberListView.setAdapter(mAdapter);
160
161        return mRootView;
162    }
163
164    public void loadGroup(Uri groupUri) {
165        mGroupUri= groupUri;
166        startGroupMetadataLoader();
167    }
168
169    public void setQuickContact(boolean enableQuickContact) {
170        mAdapter.enableQuickContact(enableQuickContact);
171    }
172
173    private void configurePhotoLoader() {
174        if (mContext != null) {
175            if (mPhotoManager == null) {
176                mPhotoManager = ContactPhotoManager.getInstance(mContext);
177            }
178            if (mMemberListView != null) {
179                mMemberListView.setOnScrollListener(this);
180            }
181            if (mAdapter != null) {
182                mAdapter.setPhotoLoader(mPhotoManager);
183            }
184        }
185    }
186
187    public void setListener(Listener value) {
188        mListener = value;
189    }
190
191    public void setShowGroupSourceInActionBar(boolean show) {
192        mShowGroupActionInActionBar = show;
193    }
194
195    public Uri getGroupUri() {
196        return mGroupUri;
197    }
198
199    /**
200     * Start the loader to retrieve the metadata for this group.
201     */
202    private void startGroupMetadataLoader() {
203        getLoaderManager().restartLoader(LOADER_METADATA, null, mGroupMetadataLoaderListener);
204    }
205
206    /**
207     * Start the loader to retrieve the list of group members.
208     */
209    private void startGroupMembersLoader() {
210        getLoaderManager().restartLoader(LOADER_MEMBERS, null, mGroupMemberListLoaderListener);
211    }
212
213    private final ContactTileView.Listener mContactTileListener =
214            new ContactTileView.Listener() {
215
216        @Override
217        public void onContactSelected(Uri contactUri, Rect targetRect) {
218            mListener.onContactSelected(contactUri);
219        }
220
221        @Override
222        public void onCallNumberDirectly(String phoneNumber) {
223            // No need to call phone number directly from People app.
224            Log.w(TAG, "unexpected invocation of onCallNumberDirectly()");
225        }
226
227        @Override
228        public int getApproximateTileWidth() {
229            return getView().getWidth() / mAdapter.getColumnCount();
230        }
231    };
232
233    /**
234     * The listener for the group metadata loader.
235     */
236    private final LoaderManager.LoaderCallbacks<Cursor> mGroupMetadataLoaderListener =
237            new LoaderCallbacks<Cursor>() {
238
239        @Override
240        public CursorLoader onCreateLoader(int id, Bundle args) {
241            return new GroupMetaDataLoader(mContext, mGroupUri);
242        }
243
244        @Override
245        public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
246            data.moveToPosition(-1);
247            if (data.moveToNext()) {
248                boolean deleted = data.getInt(GroupMetaDataLoader.DELETED) == 1;
249                if (!deleted) {
250                    bindGroupMetaData(data);
251
252                    // Retrieve the list of members
253                    startGroupMembersLoader();
254                    return;
255                }
256            }
257            updateSize(-1);
258            updateTitle(null);
259        }
260
261        @Override
262        public void onLoaderReset(Loader<Cursor> loader) {}
263    };
264
265    /**
266     * The listener for the group members list loader
267     */
268    private final LoaderManager.LoaderCallbacks<Cursor> mGroupMemberListLoaderListener =
269            new LoaderCallbacks<Cursor>() {
270
271        @Override
272        public CursorLoader onCreateLoader(int id, Bundle args) {
273            return GroupMemberLoader.constructLoaderForGroupDetailQuery(mContext, mGroupId);
274        }
275
276        @Override
277        public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
278            updateSize(data.getCount());
279            mAdapter.setContactCursor(data);
280            mMemberListView.setEmptyView(mEmptyView);
281        }
282
283        @Override
284        public void onLoaderReset(Loader<Cursor> loader) {}
285    };
286
287    private void bindGroupMetaData(Cursor cursor) {
288        cursor.moveToPosition(-1);
289        if (cursor.moveToNext()) {
290            mAccountTypeString = cursor.getString(GroupMetaDataLoader.ACCOUNT_TYPE);
291            mDataSet = cursor.getString(GroupMetaDataLoader.DATA_SET);
292            mGroupId = cursor.getLong(GroupMetaDataLoader.GROUP_ID);
293            mGroupName = cursor.getString(GroupMetaDataLoader.TITLE);
294            mIsReadOnly = cursor.getInt(GroupMetaDataLoader.IS_READ_ONLY) == 1;
295            updateTitle(mGroupName);
296            // Must call invalidate so that the option menu will get updated
297            getActivity().invalidateOptionsMenu ();
298
299            final String accountTypeString = cursor.getString(GroupMetaDataLoader.ACCOUNT_TYPE);
300            final String dataSet = cursor.getString(GroupMetaDataLoader.DATA_SET);
301            updateAccountType(accountTypeString, dataSet);
302        }
303    }
304
305    private void updateTitle(String title) {
306        if (mGroupTitle != null) {
307            mGroupTitle.setText(title);
308        } else {
309            mListener.onGroupTitleUpdated(title);
310        }
311    }
312
313    /**
314     * Display the count of the number of group members.
315     * @param size of the group (can be -1 if no size could be determined)
316     */
317    private void updateSize(int size) {
318        String groupSizeString;
319        if (size == -1) {
320            groupSizeString = null;
321        } else {
322            String groupSizeTemplateString = getResources().getQuantityString(
323                    R.plurals.num_contacts_in_group, size);
324            AccountType accountType = mAccountTypeManager.getAccountType(mAccountTypeString,
325                    mDataSet);
326            groupSizeString = String.format(groupSizeTemplateString, size,
327                    accountType.getDisplayLabel(mContext));
328        }
329
330        if (mGroupSize != null) {
331            mGroupSize.setText(groupSizeString);
332        } else {
333            mListener.onGroupSizeUpdated(groupSizeString);
334        }
335    }
336
337    /**
338     * Once the account type, group source action, and group source URI have been determined
339     * (based on the result from the {@link Loader}), then we can display this to the user in 1 of
340     * 2 ways depending on screen size and orientation: either as a button in the action bar or as
341     * a button in a static header on the page.
342     */
343    private void updateAccountType(final String accountTypeString, final String dataSet) {
344
345        // If the group action should be shown in the action bar, then pass the data to the
346        // listener who will take care of setting up the view and click listener. There is nothing
347        // else to be done by this {@link Fragment}.
348        if (mShowGroupActionInActionBar) {
349            mListener.onAccountTypeUpdated(accountTypeString, dataSet);
350            return;
351        }
352
353        final AccountTypeManager manager = AccountTypeManager.getInstance(getActivity());
354        final AccountType accountType =
355                manager.getAccountType(accountTypeString, dataSet);
356
357        // Otherwise, if the {@link Fragment} needs to create and setup the button, then first
358        // verify that there is a valid action.
359        if (!TextUtils.isEmpty(accountType.getViewGroupActivity())) {
360            if (mGroupSourceView == null) {
361                mGroupSourceView = GroupDetailDisplayUtils.getNewGroupSourceView(mContext);
362                // Figure out how to add the view to the fragment.
363                // If there is a static header with a container for the group source view, insert
364                // the view there.
365                if (mGroupSourceViewContainer != null) {
366                    mGroupSourceViewContainer.addView(mGroupSourceView);
367                }
368            }
369
370            // Rebind the data since this action can change if the loader returns updated data
371            mGroupSourceView.setVisibility(View.VISIBLE);
372            GroupDetailDisplayUtils.bindGroupSourceView(mContext, mGroupSourceView,
373                    accountTypeString, dataSet);
374            mGroupSourceView.setOnClickListener(new OnClickListener() {
375                @Override
376                public void onClick(View v) {
377                    final Uri uri = ContentUris.withAppendedId(Groups.CONTENT_URI, mGroupId);
378                    final Intent intent = new Intent(Intent.ACTION_VIEW, uri);
379                    intent.setClassName(accountType.syncAdapterPackageName,
380                            accountType.getViewGroupActivity());
381                    startActivity(intent);
382                }
383            });
384        } else if (mGroupSourceView != null) {
385            mGroupSourceView.setVisibility(View.GONE);
386        }
387    }
388
389    @Override
390    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
391            int totalItemCount) {
392    }
393
394    @Override
395    public void onScrollStateChanged(AbsListView view, int scrollState) {
396        if (scrollState == OnScrollListener.SCROLL_STATE_FLING) {
397            mPhotoManager.pause();
398        } else {
399            mPhotoManager.resume();
400        }
401    }
402
403    @Override
404    public void onCreateOptionsMenu(Menu menu, final MenuInflater inflater) {
405        inflater.inflate(R.menu.view_group, menu);
406    }
407
408    public boolean isOptionsMenuChanged() {
409        return mOptionsMenuGroupDeletable != isGroupDeletable() &&
410                mOptionsMenuGroupPresent != isGroupPresent();
411    }
412
413    public boolean isGroupDeletable() {
414        return mGroupUri != null && !mIsReadOnly;
415    }
416
417    public boolean isGroupPresent() {
418        return mGroupUri != null;
419    }
420
421    @Override
422    public void onPrepareOptionsMenu(Menu menu) {
423        mOptionsMenuGroupDeletable = isGroupDeletable() && isVisible();
424        mOptionsMenuGroupPresent = isGroupPresent() && isVisible();
425
426        final MenuItem editMenu = menu.findItem(R.id.menu_edit_group);
427        editMenu.setVisible(mOptionsMenuGroupPresent);
428
429        final MenuItem deleteMenu = menu.findItem(R.id.menu_delete_group);
430        deleteMenu.setVisible(mOptionsMenuGroupDeletable);
431    }
432
433    @Override
434    public boolean onOptionsItemSelected(MenuItem item) {
435        switch (item.getItemId()) {
436            case R.id.menu_edit_group: {
437                if (mListener != null) mListener.onEditRequested(mGroupUri);
438                break;
439            }
440            case R.id.menu_delete_group: {
441                GroupDeletionDialogFragment.show(getFragmentManager(), mGroupId, mGroupName,
442                        mCloseActivityAfterDelete);
443                return true;
444            }
445        }
446        return false;
447    }
448
449    public void closeActivityAfterDelete(boolean closeActivity) {
450        mCloseActivityAfterDelete = closeActivity;
451    }
452
453    public long getGroupId() {
454        return mGroupId;
455    }
456}
457