| /* |
| * Copyright (C) 2007 The Android Open Source 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 com.android.internal.preference; |
| |
| import android.content.Context; |
| import android.content.res.TypedArray; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.preference.DialogPreference; |
| import android.util.AttributeSet; |
| |
| /** |
| * The {@link YesNoPreference} is a preference to show a dialog with Yes and No |
| * buttons. |
| * <p> |
| * This preference will store a boolean into the SharedPreferences. |
| */ |
| public class YesNoPreference extends DialogPreference { |
| private boolean mWasPositiveResult; |
| |
| public YesNoPreference(Context context, AttributeSet attrs, int defStyleAttr) { |
| this(context, attrs, defStyleAttr, 0); |
| } |
| |
| public YesNoPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) { |
| super(context, attrs, defStyleAttr, defStyleRes); |
| } |
| |
| public YesNoPreference(Context context, AttributeSet attrs) { |
| this(context, attrs, com.android.internal.R.attr.yesNoPreferenceStyle); |
| } |
| |
| public YesNoPreference(Context context) { |
| this(context, null); |
| } |
| |
| @Override |
| protected void onDialogClosed(boolean positiveResult) { |
| super.onDialogClosed(positiveResult); |
| |
| if (callChangeListener(positiveResult)) { |
| setValue(positiveResult); |
| } |
| } |
| |
| /** |
| * Sets the value of this preference, and saves it to the persistent store |
| * if required. |
| * |
| * @param value The value of the preference. |
| */ |
| public void setValue(boolean value) { |
| mWasPositiveResult = value; |
| |
| persistBoolean(value); |
| |
| notifyDependencyChange(!value); |
| } |
| |
| /** |
| * Gets the value of this preference. |
| * |
| * @return The value of the preference. |
| */ |
| public boolean getValue() { |
| return mWasPositiveResult; |
| } |
| |
| @Override |
| protected Object onGetDefaultValue(TypedArray a, int index) { |
| return a.getBoolean(index, false); |
| } |
| |
| @Override |
| protected void onSetInitialValue(boolean restorePersistedValue, Object defaultValue) { |
| setValue(restorePersistedValue ? getPersistedBoolean(mWasPositiveResult) : |
| (Boolean) defaultValue); |
| } |
| |
| @Override |
| public boolean shouldDisableDependents() { |
| return !mWasPositiveResult || super.shouldDisableDependents(); |
| } |
| |
| @Override |
| protected Parcelable onSaveInstanceState() { |
| final Parcelable superState = super.onSaveInstanceState(); |
| if (isPersistent()) { |
| // No need to save instance state since it's persistent |
| return superState; |
| } |
| |
| final SavedState myState = new SavedState(superState); |
| myState.wasPositiveResult = getValue(); |
| return myState; |
| } |
| |
| @Override |
| protected void onRestoreInstanceState(Parcelable state) { |
| if (!state.getClass().equals(SavedState.class)) { |
| // Didn't save state for us in onSaveInstanceState |
| super.onRestoreInstanceState(state); |
| return; |
| } |
| |
| SavedState myState = (SavedState) state; |
| super.onRestoreInstanceState(myState.getSuperState()); |
| setValue(myState.wasPositiveResult); |
| } |
| |
| private static class SavedState extends BaseSavedState { |
| boolean wasPositiveResult; |
| |
| public SavedState(Parcel source) { |
| super(source); |
| wasPositiveResult = source.readInt() == 1; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel dest, int flags) { |
| super.writeToParcel(dest, flags); |
| dest.writeInt(wasPositiveResult ? 1 : 0); |
| } |
| |
| public SavedState(Parcelable superState) { |
| super(superState); |
| } |
| |
| public static final Parcelable.Creator<SavedState> CREATOR = |
| new Parcelable.Creator<SavedState>() { |
| public SavedState createFromParcel(Parcel in) { |
| return new SavedState(in); |
| } |
| |
| public SavedState[] newArray(int size) { |
| return new SavedState[size]; |
| } |
| }; |
| } |
| |
| } |