| /* |
| * Copyright (C) 2016 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 android.support.design.widget; |
| |
| import android.content.Context; |
| import android.support.v4.view.AccessibilityDelegateCompat; |
| import android.support.v4.view.ViewCompat; |
| import android.support.v4.view.accessibility.AccessibilityEventCompat; |
| import android.support.v4.view.accessibility.AccessibilityNodeInfoCompat; |
| import android.support.v7.widget.AppCompatImageButton; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.view.accessibility.AccessibilityEvent; |
| import android.widget.Checkable; |
| |
| /** |
| * @hide |
| */ |
| public class CheckableImageButton extends AppCompatImageButton implements Checkable { |
| |
| private static final int[] DRAWABLE_STATE_CHECKED = new int[]{android.R.attr.state_checked}; |
| |
| private boolean mChecked; |
| |
| public CheckableImageButton(Context context) { |
| this(context, null); |
| } |
| |
| public CheckableImageButton(Context context, AttributeSet attrs) { |
| this(context, attrs, android.support.v7.appcompat.R.attr.imageButtonStyle); |
| } |
| |
| public CheckableImageButton(Context context, AttributeSet attrs, int defStyleAttr) { |
| super(context, attrs, defStyleAttr); |
| |
| ViewCompat.setAccessibilityDelegate(this, new AccessibilityDelegateCompat() { |
| @Override |
| public void onInitializeAccessibilityEvent(View host, AccessibilityEvent event) { |
| super.onInitializeAccessibilityEvent(host, event); |
| event.setChecked(isChecked()); |
| } |
| |
| @Override |
| public void onInitializeAccessibilityNodeInfo(View host, |
| AccessibilityNodeInfoCompat info) { |
| super.onInitializeAccessibilityNodeInfo(host, info); |
| info.setCheckable(true); |
| info.setChecked(isChecked()); |
| } |
| }); |
| } |
| |
| @Override |
| public void setChecked(boolean checked) { |
| if (mChecked != checked) { |
| mChecked = checked; |
| refreshDrawableState(); |
| sendAccessibilityEvent( |
| AccessibilityEventCompat.TYPE_WINDOW_CONTENT_CHANGED); |
| } |
| } |
| |
| @Override |
| public boolean isChecked() { |
| return mChecked; |
| } |
| |
| @Override |
| public void toggle() { |
| setChecked(!mChecked); |
| } |
| |
| @Override |
| public int[] onCreateDrawableState(int extraSpace) { |
| if (mChecked) { |
| return mergeDrawableStates( |
| super.onCreateDrawableState(extraSpace + DRAWABLE_STATE_CHECKED.length), |
| DRAWABLE_STATE_CHECKED); |
| } else { |
| return super.onCreateDrawableState(extraSpace); |
| } |
| } |
| } |