// Copyright 2009 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.android.stardroid.views;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.content.res.TypedArray;
import android.graphics.drawable.Drawable;
import android.preference.PreferenceManager;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.ImageButton;
import com.google.android.stardroid.R;
import com.google.android.stardroid.util.Analytics;
import com.google.android.stardroid.util.MiscUtil;
public class PreferencesButton extends ImageButton
implements android.view.View.OnClickListener, OnSharedPreferenceChangeListener {
private static final String TAG = MiscUtil.getTag(PreferencesButton.class);
private OnClickListener secondaryOnClickListener;
@Override
public void setOnClickListener(OnClickListener l) {
this.secondaryOnClickListener = l;
}
private Drawable imageOn;
private Drawable imageOff;
private boolean isOn;
private String prefKey;
private SharedPreferences preferences;
private boolean defaultValue;
public PreferencesButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
setAttrs(context, attrs);
init();
}
public PreferencesButton(Context context, AttributeSet attrs) {
super(context, attrs);
setAttrs(context, attrs);
init();
}
private void setAttrs(Context context, AttributeSet attrs) {
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.PreferencesButton);
imageOn = a.getDrawable(R.styleable.PreferencesButton_image_on);
imageOff = a.getDrawable(R.styleable.PreferencesButton_image_off);
prefKey = a.getString(R.styleable.PreferencesButton_pref_key);
defaultValue = a.getBoolean(R.styleable.PreferencesButton_default_value, false);
Log.d(TAG, "Preference key is " + prefKey);
}
public PreferencesButton(Context context) {
super(context);
init();
}
private void init() {
super.setOnClickListener(this);
preferences = PreferenceManager.getDefaultSharedPreferences(getContext());
preferences.registerOnSharedPreferenceChangeListener(this);
this.isOn = preferences.getBoolean(prefKey, defaultValue);
Log.d(TAG, "Setting initial value of preference " + prefKey + " to " + isOn);
setVisuallyOnOrOff();
}
private void setVisuallyOnOrOff() {
setImageDrawable(isOn ? imageOn : imageOff);
}
private void setPreference() {
Log.d(TAG, "Setting preference " + prefKey + " to " + isOn);
// TODO(put this on a background thread)
if (prefKey != null) {
preferences.edit().putBoolean(prefKey, isOn).commit();
}
}
@Override
public void onClick(View v) {
isOn = !isOn;
Analytics.getInstance(getContext()).trackEvent(
Analytics.USER_ACTION_CATEGORY, Analytics.PREFERENCE_BUTTON_TOGGLE, prefKey, isOn ? 1 : 0);
setVisuallyOnOrOff();
setPreference();
if (secondaryOnClickListener != null) {
secondaryOnClickListener.onClick(v);
}
}
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,
String changedKey) {
if (changedKey.equals(prefKey)) {
isOn = sharedPreferences.getBoolean(changedKey, isOn);
setVisuallyOnOrOff();
}
}
}