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/*
* 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 com.android.launcher3.accessibility;
import android.view.ViewGroup;
import com.android.launcher3.CellLayout;
import com.android.launcher3.DropTarget.DragObject;
import com.android.launcher3.Launcher;
import com.android.launcher3.dragndrop.DragController.DragListener;
import com.android.launcher3.dragndrop.DragOptions;
/**
* Utility listener to enable/disable accessibility drag flags for a ViewGroup
* containing CellLayouts
*/
public class AccessibleDragListenerAdapter implements DragListener {
private final ViewGroup mViewGroup;
private final int mDragType;
/**
* @param parent
* @param dragType either {@link CellLayout#WORKSPACE_ACCESSIBILITY_DRAG} or
* {@link CellLayout#FOLDER_ACCESSIBILITY_DRAG}
*/
public AccessibleDragListenerAdapter(ViewGroup parent, int dragType) {
mViewGroup = parent;
mDragType = dragType;
}
@Override
public void onDragStart(DragObject dragObject, DragOptions options) {
enableAccessibleDrag(true);
}
@Override
public void onDragEnd() {
enableAccessibleDrag(false);
Launcher.getLauncher(mViewGroup.getContext()).getDragController().removeDragListener(this);
}
protected void enableAccessibleDrag(boolean enable) {
for (int i = 0; i < mViewGroup.getChildCount(); i++) {
setEnableForLayout((CellLayout) mViewGroup.getChildAt(i), enable);
}
}
protected final void setEnableForLayout(CellLayout layout, boolean enable) {
layout.enableAccessibleDrag(enable, mDragType);
}
}
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