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.calendar.selectcalendars;
18
19import android.app.ActionBar;
20import android.app.ExpandableListActivity;
21import android.content.ContentResolver;
22import android.database.Cursor;
23import android.database.MatrixCursor;
24import android.os.Bundle;
25import android.provider.CalendarContract.Calendars;
26import android.view.Menu;
27import android.view.MenuItem;
28import android.view.View;
29import android.widget.ExpandableListView;
30
31import com.android.calendar.R;
32import com.android.calendar.Utils;
33
34public class SelectSyncedCalendarsMultiAccountActivity extends ExpandableListActivity
35    implements View.OnClickListener {
36
37    private static final String TAG = "Calendar";
38    private static final String EXPANDED_KEY = "is_expanded";
39    private static final String ACCOUNT_UNIQUE_KEY = "ACCOUNT_KEY";
40    private Cursor mCursor = null;
41    private ExpandableListView mList;
42    private SelectSyncedCalendarsMultiAccountAdapter mAdapter;
43    private static final String[] PROJECTION = new String[] {
44        Calendars._ID,
45        Calendars.ACCOUNT_TYPE,
46        Calendars.ACCOUNT_NAME,
47        Calendars.ACCOUNT_TYPE + " || " + Calendars.ACCOUNT_NAME + " AS " +
48                ACCOUNT_UNIQUE_KEY,
49    };
50
51    @Override
52    protected void onCreate(Bundle icicle) {
53        super.onCreate(icicle);
54        setContentView(R.layout.select_calendars_multi_accounts_fragment);
55        mList = getExpandableListView();
56//TODO Move managedQuery into a background thread.
57//TODO change to something that supports group by queries.
58        mCursor = managedQuery(Calendars.CONTENT_URI, PROJECTION,
59                "1) GROUP BY (" + ACCOUNT_UNIQUE_KEY, //Cheap hack to make WHERE a GROUP BY query
60                null /* selectionArgs */,
61                Calendars.ACCOUNT_NAME /*sort order*/);
62        MatrixCursor accountsCursor = Utils.matrixCursorFromCursor(mCursor);
63        if (accountsCursor != null) {
64            startManagingCursor(accountsCursor);
65        }
66
67        mAdapter = new SelectSyncedCalendarsMultiAccountAdapter(findViewById(R.id.calendars)
68                .getContext(), accountsCursor, this);
69        mList.setAdapter(mAdapter);
70
71        // TODO initialize from sharepref
72        int count = mList.getCount();
73        for(int i = 0; i < count; i++) {
74            mList.expandGroup(i);
75        }
76
77        // Start a background sync to get the list of calendars from the server.
78        startCalendarMetafeedSync();
79
80        findViewById(R.id.btn_done).setOnClickListener(this);
81        findViewById(R.id.btn_discard).setOnClickListener(this);
82    }
83
84    @Override
85    public void onClick(View view) {
86        if (view.getId() == R.id.btn_done) {
87            mAdapter.doSaveAction();
88            finish();
89        } else if (view.getId() == R.id.btn_discard) {
90            finish();
91        }
92    }
93
94    @Override
95    protected void onResume() {
96        super.onResume();
97        if (mAdapter != null) {
98            mAdapter.startRefreshStopDelay();
99        }
100    }
101
102    @Override
103    protected void onPause() {
104        super.onPause();
105        mAdapter.cancelRefreshStopDelay();
106    }
107
108    @Override
109    protected void onSaveInstanceState(Bundle outState) {
110        super.onSaveInstanceState(outState);
111        boolean[] isExpanded;
112        mList = getExpandableListView();
113        if(mList != null) {
114            int count = mList.getCount();
115            isExpanded = new boolean[count];
116            for(int i = 0; i < count; i++) {
117                isExpanded[i] = mList.isGroupExpanded(i);
118            }
119        } else {
120            isExpanded = null;
121        }
122        outState.putBooleanArray(EXPANDED_KEY, isExpanded);
123        //TODO Store this to preferences instead so it remains on restart
124    }
125
126    @Override
127    protected void onRestoreInstanceState(Bundle state) {
128        super.onRestoreInstanceState(state);
129        mList = getExpandableListView();
130        boolean[] isExpanded = state.getBooleanArray(EXPANDED_KEY);
131        if(mList != null && isExpanded != null && mList.getCount() >= isExpanded.length) {
132            for(int i = 0; i < isExpanded.length; i++) {
133                if(isExpanded[i] && !mList.isGroupExpanded(i)) {
134                    mList.expandGroup(i);
135                } else if(!isExpanded[i] && mList.isGroupExpanded(i)){
136                    mList.collapseGroup(i);
137                }
138            }
139        }
140    }
141
142    @Override
143    public boolean onCreateOptionsMenu(Menu menu) {
144        getActionBar()
145                .setDisplayOptions(ActionBar.DISPLAY_HOME_AS_UP, ActionBar.DISPLAY_HOME_AS_UP);
146        return true;
147    }
148
149    @Override
150    public boolean onOptionsItemSelected(MenuItem item) {
151        switch (item.getItemId()) {
152            case android.R.id.home:
153                Utils.returnToCalendarHome(this);
154                return true;
155        }
156        return super.onOptionsItemSelected(item);
157    }
158
159    // startCalendarMetafeedSync() checks the server for an updated list of
160    // Calendars (in the background).
161    //
162    // If a Calendar is added on the web (and it is selected and not
163    // hidden) then it will be added to the list of calendars on the phone
164    // (when this finishes).  When a new calendar from the
165    // web is added to the phone, then the events for that calendar are also
166    // downloaded from the web.
167    //
168    // This sync is done automatically in the background when the
169    // SelectCalendars activity is started.
170    private void startCalendarMetafeedSync() {
171        Bundle extras = new Bundle();
172        extras.putBoolean(ContentResolver.SYNC_EXTRAS_MANUAL, true);
173        extras.putBoolean("metafeedonly", true);
174        ContentResolver.requestSync(null /* all accounts */,
175                Calendars.CONTENT_URI.getAuthority(), extras);
176    }
177}
178