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package com.android.settings;
import android.content.Context;
import android.os.Bundle;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.Checkable;
/**
* A hybrid of AppListPreference and SwitchPreference, representing a preference which can be on or
* off but must have a selected value when turned on.
*
* It is invalid to show this preference when zero valid apps are present.
*/
public class AppListSwitchPreference extends AppListPreference {
private static final String TAG = "AppListSwitchPref";
private Checkable mSwitch;
public AppListSwitchPreference(Context context, AttributeSet attrs) {
super(context, attrs, 0, R.style.AppListSwitchPreference);
}
@Override
protected void onBindView(View view) {
super.onBindView(view);
mSwitch = (Checkable) view.findViewById(com.android.internal.R.id.switchWidget);
mSwitch.setChecked(getValue() != null);
}
@Override
protected void showDialog(Bundle state) {
if (getValue() != null) {
// Turning off the current value.
if (callChangeListener(null)) {
setValue(null);
}
} else if (getEntryValues() == null || getEntryValues().length == 0) {
Log.e(TAG, "Attempting to show dialog with zero entries: " + getKey());
} else if (getEntryValues().length == 1) {
// Suppress the dialog and just toggle the preference with the only choice.
String value = getEntryValues()[0].toString();
if (callChangeListener(value)) {
setValue(value);
}
} else {
super.showDialog(state);
}
}
@Override
public void setValue(String value) {
super.setValue(value);
if (mSwitch != null) {
mSwitch.setChecked(value != null);
}
}
}
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