1/*
2 * Copyright (C) 2010 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.camera.ui;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.util.Log;
22import android.view.LayoutInflater;
23import android.view.View;
24import android.view.ViewGroup;
25import android.widget.AdapterView;
26import android.widget.ArrayAdapter;
27import android.widget.ListView;
28
29import com.android.camera.ListPreference;
30import com.android.camera.PreferenceGroup;
31import com.android.camera.R;
32
33import java.util.ArrayList;
34
35/* A popup window that contains several camera settings. */
36public class MoreSettingPopup extends AbstractSettingPopup
37        implements InLineSettingItem.Listener,
38        AdapterView.OnItemClickListener {
39    @SuppressWarnings("unused")
40    private static final String TAG = "MoreSettingPopup";
41
42    private Listener mListener;
43    private ArrayList<ListPreference> mListItem = new ArrayList<ListPreference>();
44
45    // Keep track of which setting items are disabled
46    // e.g. White balance will be disabled when scene mode is set to non-auto
47    private boolean[] mEnabled;
48
49    static public interface Listener {
50        public void onSettingChanged(ListPreference pref);
51        public void onPreferenceClicked(ListPreference pref);
52    }
53
54    private class MoreSettingAdapter extends ArrayAdapter<ListPreference> {
55        LayoutInflater mInflater;
56        String mOnString;
57        String mOffString;
58        MoreSettingAdapter() {
59            super(MoreSettingPopup.this.getContext(), 0, mListItem);
60            Context context = getContext();
61            mInflater = LayoutInflater.from(context);
62            mOnString = context.getString(R.string.setting_on);
63            mOffString = context.getString(R.string.setting_off);
64        }
65
66        private int getSettingLayoutId(ListPreference pref) {
67
68            if (isOnOffPreference(pref)) {
69                return R.layout.in_line_setting_check_box;
70            }
71            return R.layout.in_line_setting_menu;
72        }
73
74        private boolean isOnOffPreference(ListPreference pref) {
75            CharSequence[] entries = pref.getEntries();
76            if (entries.length != 2) return false;
77            String str1 = entries[0].toString();
78            String str2 = entries[1].toString();
79            return ((str1.equals(mOnString) && str2.equals(mOffString)) ||
80                    (str1.equals(mOffString) && str2.equals(mOnString)));
81        }
82
83        @Override
84        public View getView(int position, View convertView, ViewGroup parent) {
85            if (convertView != null) return convertView;
86
87            ListPreference pref = mListItem.get(position);
88
89            int viewLayoutId = getSettingLayoutId(pref);
90            InLineSettingItem view = (InLineSettingItem)
91                    mInflater.inflate(viewLayoutId, parent, false);
92
93            view.initialize(pref); // no init for restore one
94            view.setSettingChangedListener(MoreSettingPopup.this);
95            if (position >= 0 && position < mEnabled.length) {
96                view.setEnabled(mEnabled[position]);
97            } else {
98                Log.w(TAG, "Invalid input: enabled list length, " + mEnabled.length
99                        + " position " + position);
100            }
101            return view;
102        }
103
104        @Override
105        public boolean isEnabled(int position) {
106            if (position >= 0 && position < mEnabled.length) {
107                return mEnabled[position];
108            }
109            return true;
110        }
111    }
112
113    public void setSettingChangedListener(Listener listener) {
114        mListener = listener;
115    }
116
117    public MoreSettingPopup(Context context, AttributeSet attrs) {
118        super(context, attrs);
119    }
120
121    public void initialize(PreferenceGroup group, String[] keys) {
122        // Prepare the setting items.
123        for (int i = 0; i < keys.length; ++i) {
124            ListPreference pref = group.findPreference(keys[i]);
125            if (pref != null) mListItem.add(pref);
126        }
127
128        ArrayAdapter<ListPreference> mListItemAdapter = new MoreSettingAdapter();
129        ((ListView) mSettingList).setAdapter(mListItemAdapter);
130        ((ListView) mSettingList).setOnItemClickListener(this);
131        ((ListView) mSettingList).setSelector(android.R.color.transparent);
132        // Initialize mEnabled
133        mEnabled = new boolean[mListItem.size()];
134        for (int i = 0; i < mEnabled.length; i++) {
135            mEnabled[i] = true;
136        }
137    }
138
139    // When preferences are disabled, we will display them grayed out. Users
140    // will not be able to change the disabled preferences, but they can still see
141    // the current value of the preferences
142    public void setPreferenceEnabled(String key, boolean enable) {
143        int count = mEnabled == null ? 0 : mEnabled.length;
144        for (int j = 0; j < count; j++) {
145            ListPreference pref = mListItem.get(j);
146            if (pref != null && key.equals(pref.getKey())) {
147                mEnabled[j] = enable;
148                break;
149            }
150        }
151    }
152
153    public void onSettingChanged(ListPreference pref) {
154        if (mListener != null) {
155            mListener.onSettingChanged(pref);
156        }
157    }
158
159    // Scene mode can override other camera settings (ex: flash mode).
160    public void overrideSettings(final String ... keyvalues) {
161        int count = mEnabled == null ? 0 : mEnabled.length;
162        for (int i = 0; i < keyvalues.length; i += 2) {
163            String key = keyvalues[i];
164            String value = keyvalues[i + 1];
165            for (int j = 0; j < count; j++) {
166                ListPreference pref = mListItem.get(j);
167                if (pref != null && key.equals(pref.getKey())) {
168                    // Change preference
169                    if (value != null) pref.setValue(value);
170                    // If the preference is overridden, disable the preference
171                    boolean enable = value == null;
172                    mEnabled[j] = enable;
173                    if (mSettingList.getChildCount() > j) {
174                        mSettingList.getChildAt(j).setEnabled(enable);
175                    }
176                }
177            }
178        }
179        reloadPreference();
180    }
181
182    @Override
183    public void onItemClick(AdapterView<?> parent, View view, int position,
184            long id) {
185        if (mListener != null) {
186            ListPreference pref = mListItem.get(position);
187            mListener.onPreferenceClicked(pref);
188        }
189    }
190
191    @Override
192    public void reloadPreference() {
193        int count = mSettingList.getChildCount();
194        for (int i = 0; i < count; i++) {
195            ListPreference pref = mListItem.get(i);
196            if (pref != null) {
197                InLineSettingItem settingItem =
198                        (InLineSettingItem) mSettingList.getChildAt(i);
199                settingItem.reloadPreference();
200            }
201        }
202    }
203}
204