1/*
2 * Copyright (C) 2012 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 java.util.Locale;
20
21import android.content.Context;
22import android.content.res.Resources;
23import android.util.AttributeSet;
24import android.util.Log;
25import android.view.View;
26import android.widget.Button;
27import android.widget.CompoundButton;
28import android.widget.NumberPicker;
29import android.widget.Switch;
30import android.widget.TextView;
31
32import com.android.camera.ListPreference;
33import com.android.camera.R;
34
35/**
36 * This is a popup window that allows users to turn on/off time lapse feature,
37 * and to select a time interval for taking a time lapse video.
38 */
39
40public class TimerSettingPopup extends AbstractSettingPopup {
41    private static final String TAG = "TimerSettingPopup";
42    private NumberPicker mNumberSpinner;
43    private Switch mTimerSwitch;
44    private String[] mDurations;
45    private ListPreference mPreference;
46    private Listener mListener;
47    private Button mConfirmButton;
48    private TextView mHelpText;
49    private View mTimePicker;
50
51    static public interface Listener {
52        public void onListPrefChanged(ListPreference pref);
53    }
54
55    public void setSettingChangedListener(Listener listener) {
56        mListener = listener;
57    }
58
59    public TimerSettingPopup(Context context, AttributeSet attrs) {
60        super(context, attrs);
61    }
62
63    public void initialize(ListPreference preference) {
64        mPreference = preference;
65
66        // Set title.
67        mTitle.setText(mPreference.getTitle());
68
69        // Duration
70        CharSequence[] entries = mPreference.getEntryValues();
71        mDurations = new String[entries.length - 1];
72        Locale locale = getResources().getConfiguration().locale;
73        for (int i = 1; i < entries.length; i++)
74            mDurations[i-1] = String.format(locale, "%d",
75                    Integer.parseInt(entries[i].toString()));
76        int durationCount = mDurations.length;
77        mNumberSpinner = (NumberPicker) findViewById(R.id.duration);
78        mNumberSpinner.setMinValue(0);
79        mNumberSpinner.setMaxValue(durationCount - 1);
80        mNumberSpinner.setDisplayedValues(mDurations);
81        mNumberSpinner.setWrapSelectorWheel(false);
82
83        mTimerSwitch = (Switch) findViewById(R.id.timer_setting_switch);
84        mHelpText = (TextView) findViewById(R.id.set_timer_help_text);
85        mConfirmButton = (Button) findViewById(R.id.timer_set_button);
86        mTimePicker = findViewById(R.id.time_duration_picker);
87
88        // Disable focus on the spinners to prevent keyboard from coming up
89        mNumberSpinner.setDescendantFocusability(NumberPicker.FOCUS_BLOCK_DESCENDANTS);
90
91        mTimerSwitch.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
92            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
93                setTimeSelectionEnabled(isChecked);
94            }
95        });
96        mConfirmButton.setOnClickListener(new View.OnClickListener() {
97            public void onClick(View v) {
98                updateInputState();
99            }
100        });
101    }
102
103    private void restoreSetting() {
104        int index = mPreference.findIndexOfValue(mPreference.getValue());
105        if (index == -1) {
106            Log.e(TAG, "Invalid preference value.");
107            mPreference.print();
108            throw new IllegalArgumentException();
109        } else if (index == 0) {
110            // default choice: time lapse off
111            mTimerSwitch.setChecked(false);
112            setTimeSelectionEnabled(false);
113        } else {
114            mTimerSwitch.setChecked(true);
115            setTimeSelectionEnabled(true);
116            mNumberSpinner.setValue(index - 1);
117        }
118    }
119
120    @Override
121    public void setVisibility(int visibility) {
122        if (visibility == View.VISIBLE) {
123            if (getVisibility() != View.VISIBLE) {
124                // Set the number pickers and on/off switch to be consistent
125                // with the preference
126                restoreSetting();
127            }
128        }
129        super.setVisibility(visibility);
130    }
131
132    protected void setTimeSelectionEnabled(boolean enabled) {
133        mHelpText.setVisibility(enabled ? GONE : VISIBLE);
134        mTimePicker.setVisibility(enabled ? VISIBLE : GONE);
135    }
136
137    @Override
138    public void reloadPreference() {
139    }
140
141    private void updateInputState() {
142        if (mTimerSwitch.isChecked()) {
143            int newId = mNumberSpinner.getValue() + 1;
144            mPreference.setValueIndex(newId);
145        } else {
146            mPreference.setValueIndex(0);
147        }
148
149        if (mListener != null) {
150            mListener.onListPrefChanged(mPreference);
151        }
152    }
153}
154