package com.example.checkableviews; | |
/******************************************************************************* | |
* Copyright 2013 Chris Banes. | |
* | |
* 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. | |
*******************************************************************************/ | |
import android.content.Context; | |
import android.util.AttributeSet; | |
import android.util.Log; | |
import android.view.View; | |
import android.widget.Checkable; | |
import android.widget.LinearLayout; | |
public class CheckableLinearLayout extends LinearLayout implements Checkable { | |
/** | |
* Interface definition for a callback to be invoked when the checked state of this View is | |
* changed. | |
*/ | |
public static interface OnCheckedChangeListener { | |
/** | |
* Called when the checked state of a compound button has changed. | |
* | |
* @param checkableView The view whose state has changed. | |
* @param isChecked The new checked state of checkableView. | |
*/ | |
void onCheckedChanged(View checkableView, boolean isChecked); | |
} | |
private static final int[] CHECKED_STATE_SET = {android.R.attr.state_checked}; | |
private boolean mChecked = false; | |
private OnCheckedChangeListener mOnCheckedChangeListener; | |
public CheckableLinearLayout(Context context, AttributeSet attrs) { | |
super(context, attrs); | |
} | |
public boolean isChecked() { | |
return mChecked; | |
} | |
public void setChecked(boolean b) { | |
if (b != mChecked) { | |
mChecked = b; | |
refreshDrawableState(); | |
if (mOnCheckedChangeListener != null) { | |
mOnCheckedChangeListener.onCheckedChanged(this, mChecked); | |
} | |
} | |
} | |
public void toggle() { | |
setChecked(!mChecked); | |
} | |
@Override | |
public int[] onCreateDrawableState(int extraSpace) { | |
final int[] drawableState = super.onCreateDrawableState(extraSpace + 1); | |
if (isChecked()) { | |
mergeDrawableStates(drawableState, CHECKED_STATE_SET); | |
} | |
return drawableState; | |
} | |
/** | |
* Register a callback to be invoked when the checked state of this view changes. | |
* | |
* @param listener the callback to call on checked state change | |
*/ | |
public void setOnCheckedChangeListener(OnCheckedChangeListener listener) { | |
mOnCheckedChangeListener = listener; | |
} | |
} |
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