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.ActivityNotFoundException;
24import android.content.ContentUris;
25import android.content.Context;
26import android.content.CursorLoader;
27import android.content.Intent;
28import android.content.Loader;
29import android.content.res.Resources;
30import android.database.Cursor;
31import android.graphics.Rect;
32import android.net.Uri;
33import android.os.Bundle;
34import android.provider.ContactsContract.Groups;
35import android.text.TextUtils;
36import android.util.Log;
37import android.view.LayoutInflater;
38import android.view.Menu;
39import android.view.MenuInflater;
40import android.view.MenuItem;
41import android.view.View;
42import android.view.View.OnClickListener;
43import android.view.ViewGroup;
44import android.widget.AbsListView;
45import android.widget.AbsListView.OnScrollListener;
46import android.widget.ListView;
47import android.widget.TextView;
48import android.widget.Toast;
49
50import com.android.contacts.GroupMemberLoader;
51import com.android.contacts.GroupMetaDataLoader;
52import com.android.contacts.R;
53import com.android.contacts.common.ContactPhotoManager;
54import com.android.contacts.interactions.GroupDeletionDialogFragment;
55import com.android.contacts.common.list.ContactTileAdapter;
56import com.android.contacts.common.list.ContactTileView;
57import com.android.contacts.list.GroupMemberTileAdapter;
58import com.android.contacts.common.model.AccountTypeManager;
59import com.android.contacts.common.model.account.AccountType;
60
61/**
62 * Displays the details of a group and shows a list of actions possible for the group.
63 */
64public class GroupDetailFragment extends Fragment implements OnScrollListener {
65
66    public static interface Listener {
67        /**
68         * The group title has been loaded
69         */
70        public void onGroupTitleUpdated(String title);
71
72        /**
73         * The number of group members has been determined
74         */
75        public void onGroupSizeUpdated(String size);
76
77        /**
78         * The account type and dataset have been determined.
79         */
80        public void onAccountTypeUpdated(String accountTypeString, String dataSet);
81
82        /**
83         * User decided to go to Edit-Mode
84         */
85        public void onEditRequested(Uri groupUri);
86
87        /**
88         * Contact is selected and should launch details page
89         */
90        public void onContactSelected(Uri contactUri);
91    }
92
93    private static final String TAG = "GroupDetailFragment";
94
95    private static final int LOADER_METADATA = 0;
96    private static final int LOADER_MEMBERS = 1;
97
98    private Context mContext;
99
100    private View mRootView;
101    private ViewGroup mGroupSourceViewContainer;
102    private View mGroupSourceView;
103    private TextView mGroupTitle;
104    private TextView mGroupSize;
105    private ListView mMemberListView;
106    private View mEmptyView;
107
108    private Listener mListener;
109
110    private ContactTileAdapter mAdapter;
111    private ContactPhotoManager mPhotoManager;
112    private AccountTypeManager mAccountTypeManager;
113
114    private Uri mGroupUri;
115    private long mGroupId;
116    private String mGroupName;
117    private String mAccountTypeString;
118    private String mDataSet;
119    private boolean mIsReadOnly;
120    private boolean mIsMembershipEditable;
121
122    private boolean mShowGroupActionInActionBar;
123    private boolean mOptionsMenuGroupDeletable;
124    private boolean mOptionsMenuGroupEditable;
125    private boolean mCloseActivityAfterDelete;
126
127    public GroupDetailFragment() {
128    }
129
130    @Override
131    public void onAttach(Activity activity) {
132        super.onAttach(activity);
133        mContext = activity;
134        mAccountTypeManager = AccountTypeManager.getInstance(mContext);
135
136        Resources res = getResources();
137        int columnCount = res.getInteger(R.integer.contact_tile_column_count);
138
139        mAdapter = new GroupMemberTileAdapter(activity, mContactTileListener, columnCount);
140
141        configurePhotoLoader();
142    }
143
144    @Override
145    public void onDetach() {
146        super.onDetach();
147        mContext = null;
148    }
149
150    @Override
151    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedState) {
152        setHasOptionsMenu(true);
153        mRootView = inflater.inflate(R.layout.group_detail_fragment, container, false);
154        mGroupTitle = (TextView) mRootView.findViewById(R.id.group_title);
155        mGroupSize = (TextView) mRootView.findViewById(R.id.group_size);
156        mGroupSourceViewContainer = (ViewGroup) mRootView.findViewById(
157                R.id.group_source_view_container);
158        mEmptyView = mRootView.findViewById(android.R.id.empty);
159        mMemberListView = (ListView) mRootView.findViewById(android.R.id.list);
160        mMemberListView.setItemsCanFocus(true);
161        mMemberListView.setAdapter(mAdapter);
162
163        return mRootView;
164    }
165
166    public void loadGroup(Uri groupUri) {
167        mGroupUri= groupUri;
168        startGroupMetadataLoader();
169    }
170
171    public void setQuickContact(boolean enableQuickContact) {
172        mAdapter.enableQuickContact(enableQuickContact);
173    }
174
175    private void configurePhotoLoader() {
176        if (mContext != null) {
177            if (mPhotoManager == null) {
178                mPhotoManager = ContactPhotoManager.getInstance(mContext);
179            }
180            if (mMemberListView != null) {
181                mMemberListView.setOnScrollListener(this);
182            }
183            if (mAdapter != null) {
184                mAdapter.setPhotoLoader(mPhotoManager);
185            }
186        }
187    }
188
189    public void setListener(Listener value) {
190        mListener = value;
191    }
192
193    public void setShowGroupSourceInActionBar(boolean show) {
194        mShowGroupActionInActionBar = show;
195    }
196
197    public Uri getGroupUri() {
198        return mGroupUri;
199    }
200
201    /**
202     * Start the loader to retrieve the metadata for this group.
203     */
204    private void startGroupMetadataLoader() {
205        getLoaderManager().restartLoader(LOADER_METADATA, null, mGroupMetadataLoaderListener);
206    }
207
208    /**
209     * Start the loader to retrieve the list of group members.
210     */
211    private void startGroupMembersLoader() {
212        getLoaderManager().restartLoader(LOADER_MEMBERS, null, mGroupMemberListLoaderListener);
213    }
214
215    private final ContactTileView.Listener mContactTileListener =
216            new ContactTileView.Listener() {
217
218        @Override
219        public void onContactSelected(Uri contactUri, Rect targetRect) {
220            mListener.onContactSelected(contactUri);
221        }
222
223        @Override
224        public void onCallNumberDirectly(String phoneNumber) {
225            // No need to call phone number directly from People app.
226            Log.w(TAG, "unexpected invocation of onCallNumberDirectly()");
227        }
228
229        @Override
230        public int getApproximateTileWidth() {
231            return getView().getWidth() / mAdapter.getColumnCount();
232        }
233    };
234
235    /**
236     * The listener for the group metadata loader.
237     */
238    private final LoaderManager.LoaderCallbacks<Cursor> mGroupMetadataLoaderListener =
239            new LoaderCallbacks<Cursor>() {
240
241        @Override
242        public CursorLoader onCreateLoader(int id, Bundle args) {
243            return new GroupMetaDataLoader(mContext, mGroupUri);
244        }
245
246        @Override
247        public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
248            if (data == null || data.isClosed()) {
249                Log.e(TAG, "Failed to load group metadata");
250                return;
251            }
252            data.moveToPosition(-1);
253            if (data.moveToNext()) {
254                boolean deleted = data.getInt(GroupMetaDataLoader.DELETED) == 1;
255                if (!deleted) {
256                    bindGroupMetaData(data);
257
258                    // Retrieve the list of members
259                    startGroupMembersLoader();
260                    return;
261                }
262            }
263            updateSize(-1);
264            updateTitle(null);
265        }
266
267        @Override
268        public void onLoaderReset(Loader<Cursor> loader) {}
269    };
270
271    /**
272     * The listener for the group members list loader
273     */
274    private final LoaderManager.LoaderCallbacks<Cursor> mGroupMemberListLoaderListener =
275            new LoaderCallbacks<Cursor>() {
276
277        @Override
278        public CursorLoader onCreateLoader(int id, Bundle args) {
279            return GroupMemberLoader.constructLoaderForGroupDetailQuery(mContext, mGroupId);
280        }
281
282        @Override
283        public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
284            if (data == null || data.isClosed()) {
285                Log.e(TAG, "Failed to load group members");
286                return;
287            }
288            updateSize(data.getCount());
289            mAdapter.setContactCursor(data);
290            mMemberListView.setEmptyView(mEmptyView);
291        }
292
293        @Override
294        public void onLoaderReset(Loader<Cursor> loader) {}
295    };
296
297    private void bindGroupMetaData(Cursor cursor) {
298        cursor.moveToPosition(-1);
299        if (cursor.moveToNext()) {
300            mAccountTypeString = cursor.getString(GroupMetaDataLoader.ACCOUNT_TYPE);
301            mDataSet = cursor.getString(GroupMetaDataLoader.DATA_SET);
302            mGroupId = cursor.getLong(GroupMetaDataLoader.GROUP_ID);
303            mGroupName = cursor.getString(GroupMetaDataLoader.TITLE);
304            mIsReadOnly = cursor.getInt(GroupMetaDataLoader.IS_READ_ONLY) == 1;
305            updateTitle(mGroupName);
306            // Must call invalidate so that the option menu will get updated
307            getActivity().invalidateOptionsMenu ();
308
309            final String accountTypeString = cursor.getString(GroupMetaDataLoader.ACCOUNT_TYPE);
310            final String dataSet = cursor.getString(GroupMetaDataLoader.DATA_SET);
311            updateAccountType(accountTypeString, dataSet);
312        }
313    }
314
315    private void updateTitle(String title) {
316        if (mGroupTitle != null) {
317            mGroupTitle.setText(title);
318        } else {
319            mListener.onGroupTitleUpdated(title);
320        }
321    }
322
323    /**
324     * Display the count of the number of group members.
325     * @param size of the group (can be -1 if no size could be determined)
326     */
327    private void updateSize(int size) {
328        String groupSizeString;
329        if (size == -1) {
330            groupSizeString = null;
331        } else {
332            AccountType accountType = mAccountTypeManager.getAccountType(mAccountTypeString,
333                    mDataSet);
334            final CharSequence dispLabel = accountType.getDisplayLabel(mContext);
335            if (!TextUtils.isEmpty(dispLabel)) {
336                String groupSizeTemplateString = getResources().getQuantityString(
337                        R.plurals.num_contacts_in_group, size);
338                groupSizeString = String.format(groupSizeTemplateString, size, dispLabel);
339            } else {
340                String groupSizeTemplateString = getResources().getQuantityString(
341                        R.plurals.group_list_num_contacts_in_group, size);
342                groupSizeString = String.format(groupSizeTemplateString, size);
343            }
344        }
345
346        if (mGroupSize != null) {
347            mGroupSize.setText(groupSizeString);
348        } else {
349            mListener.onGroupSizeUpdated(groupSizeString);
350        }
351    }
352
353    /**
354     * Once the account type, group source action, and group source URI have been determined
355     * (based on the result from the {@link Loader}), then we can display this to the user in 1 of
356     * 2 ways depending on screen size and orientation: either as a button in the action bar or as
357     * a button in a static header on the page.
358     * We also use isGroupMembershipEditable() of accountType to determine whether or not we should
359     * display the Edit option in the Actionbar.
360     */
361    private void updateAccountType(final String accountTypeString, final String dataSet) {
362        final AccountTypeManager manager = AccountTypeManager.getInstance(getActivity());
363        final AccountType accountType =
364                manager.getAccountType(accountTypeString, dataSet);
365
366        mIsMembershipEditable = accountType.isGroupMembershipEditable();
367
368        // If the group action should be shown in the action bar, then pass the data to the
369        // listener who will take care of setting up the view and click listener. There is nothing
370        // else to be done by this {@link Fragment}.
371        if (mShowGroupActionInActionBar) {
372            mListener.onAccountTypeUpdated(accountTypeString, dataSet);
373            return;
374        }
375
376        // Otherwise, if the {@link Fragment} needs to create and setup the button, then first
377        // verify that there is a valid action.
378        if (!TextUtils.isEmpty(accountType.getViewGroupActivity())) {
379            if (mGroupSourceView == null) {
380                mGroupSourceView = GroupDetailDisplayUtils.getNewGroupSourceView(mContext);
381                // Figure out how to add the view to the fragment.
382                // If there is a static header with a container for the group source view, insert
383                // the view there.
384                if (mGroupSourceViewContainer != null) {
385                    mGroupSourceViewContainer.addView(mGroupSourceView);
386                }
387            }
388
389            // Rebind the data since this action can change if the loader returns updated data
390            mGroupSourceView.setVisibility(View.VISIBLE);
391            GroupDetailDisplayUtils.bindGroupSourceView(mContext, mGroupSourceView,
392                    accountTypeString, dataSet);
393            mGroupSourceView.setOnClickListener(new OnClickListener() {
394                @Override
395                public void onClick(View v) {
396                    final Uri uri = ContentUris.withAppendedId(Groups.CONTENT_URI, mGroupId);
397                    final Intent intent = new Intent(Intent.ACTION_VIEW, uri);
398                    intent.setClassName(accountType.syncAdapterPackageName,
399                            accountType.getViewGroupActivity());
400                    try {
401                        startActivity(intent);
402                    } catch (ActivityNotFoundException e) {
403                        Log.e(TAG, "startActivity() failed: " + e);
404                        Toast.makeText(getActivity(), R.string.missing_app,
405                                Toast.LENGTH_SHORT).show();
406                    }
407                }
408            });
409        } else if (mGroupSourceView != null) {
410            mGroupSourceView.setVisibility(View.GONE);
411        }
412    }
413
414    @Override
415    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount,
416            int totalItemCount) {
417    }
418
419    @Override
420    public void onScrollStateChanged(AbsListView view, int scrollState) {
421        if (scrollState == OnScrollListener.SCROLL_STATE_FLING) {
422            mPhotoManager.pause();
423        } else {
424            mPhotoManager.resume();
425        }
426    }
427
428    @Override
429    public void onCreateOptionsMenu(Menu menu, final MenuInflater inflater) {
430        inflater.inflate(R.menu.view_group, menu);
431    }
432
433    public boolean isOptionsMenuChanged() {
434        return mOptionsMenuGroupDeletable != isGroupDeletable() &&
435                mOptionsMenuGroupEditable != isGroupEditableAndPresent();
436    }
437
438    public boolean isGroupDeletable() {
439        return mGroupUri != null && !mIsReadOnly;
440    }
441
442    public boolean isGroupEditableAndPresent() {
443        return mGroupUri != null && mIsMembershipEditable;
444    }
445
446    @Override
447    public void onPrepareOptionsMenu(Menu menu) {
448        mOptionsMenuGroupDeletable = isGroupDeletable() && isVisible();
449        mOptionsMenuGroupEditable = isGroupEditableAndPresent() && isVisible();
450
451        final MenuItem editMenu = menu.findItem(R.id.menu_edit_group);
452        editMenu.setVisible(mOptionsMenuGroupEditable);
453
454        final MenuItem deleteMenu = menu.findItem(R.id.menu_delete_group);
455        deleteMenu.setVisible(mOptionsMenuGroupDeletable);
456    }
457
458    @Override
459    public boolean onOptionsItemSelected(MenuItem item) {
460        switch (item.getItemId()) {
461            case R.id.menu_edit_group: {
462                if (mListener != null) mListener.onEditRequested(mGroupUri);
463                break;
464            }
465            case R.id.menu_delete_group: {
466                GroupDeletionDialogFragment.show(getFragmentManager(), mGroupId, mGroupName,
467                        mCloseActivityAfterDelete);
468                return true;
469            }
470        }
471        return false;
472    }
473
474    public void closeActivityAfterDelete(boolean closeActivity) {
475        mCloseActivityAfterDelete = closeActivity;
476    }
477
478    public long getGroupId() {
479        return mGroupId;
480    }
481}
482