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/*
* Copyright (C) 2011 The CyanogenMod Project
*
* 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 android.preference;
import android.app.AlertDialog.Builder;
import android.content.Context;
import android.content.DialogInterface;
import android.text.TextUtils;
import android.util.AttributeSet;
/**
* @hide
*/
public class ListPreferenceMultiSelect extends ListPreference {
private static final String SEPARATOR = "OV=I=XseparatorX=I=VO";
private boolean[] mClickedDialogEntryIndices;
private String mSummary;
public ListPreferenceMultiSelect(Context context) {
super(context);
}
public ListPreferenceMultiSelect(Context context, AttributeSet attrs) {
super(context, attrs);
}
@Override
protected void onPrepareDialogBuilder(Builder builder) {
CharSequence[] entries = getEntries();
CharSequence[] entryValues = getEntryValues();
if (entries == null || entryValues == null || entries.length != entryValues.length) {
throw new IllegalStateException(
this.getClass().getSimpleName()
+ " requires an entries array and an entryValues array which are both the same length");
}
mClickedDialogEntryIndices = new boolean[entryValues.length];
restoreCheckedEntries();
builder.setMultiChoiceItems(entries, mClickedDialogEntryIndices, new DialogInterface.OnMultiChoiceClickListener() {
@Override
public void onClick(DialogInterface dialog, int which, boolean isChecked) {
mClickedDialogEntryIndices[which] = isChecked;
}
});
}
public static String[] parseStoredValue(CharSequence val) {
if (TextUtils.isEmpty(val)) {
return null;
} else {
return val.toString().split(SEPARATOR);
}
}
private void restoreCheckedEntries() {
CharSequence[] entryValues = getEntryValues();
String[] vals = parseStoredValue(getValue());
if (vals != null) {
for (String val : vals) {
for (int i = 0; i < entryValues.length; i++) {
CharSequence entry = entryValues[i];
if (entry.equals(val)) {
mClickedDialogEntryIndices[i] = true;
break;
}
}
}
}
}
@Override
protected void onDialogClosed(boolean positiveResult) {
CharSequence[] entryValues = getEntryValues();
if (positiveResult && entryValues != null) {
StringBuilder value = new StringBuilder();
for (int i = 0; i < entryValues.length; i++) {
if (mClickedDialogEntryIndices[i]) {
if (value.length() > 0) {
value.append(SEPARATOR);
}
value.append(entryValues[i]);
}
}
String val = value.toString();
if (callChangeListener(val)) {
setValue(val);
}
}
}
@Override
public CharSequence getSummary() {
final CharSequence entry = getEntry();
if (mSummary == null) {
return super.getSummary();
} else {
return mSummary;
}
}
@Override
public void setSummary(CharSequence summary) {
super.setSummary(summary);
if (summary == null && mSummary != null) {
mSummary = null;
} else if (summary != null && !summary.equals(mSummary)) {
mSummary = summary.toString();
}
}
}
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