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/*
* Copyright (C) 2015 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.dialer;
import android.content.Context;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar.SnackbarLayout;
import android.util.AttributeSet;
import android.view.View;
import android.widget.FrameLayout;
/**
* Implements custom behavior for the movement of the FAB in response to the Snackbar.
* Because we are not using the design framework FloatingActionButton widget, we need to manually
* implement the Material Design behavior of having the FAB translate upward and downward with
* the appearance and disappearance of a Snackbar.
*/
public class FloatingActionButtonBehavior extends CoordinatorLayout.Behavior<FrameLayout> {
public FloatingActionButtonBehavior(Context context, AttributeSet attrs) {
}
@Override
public boolean layoutDependsOn(CoordinatorLayout parent, FrameLayout child, View dependency) {
return dependency instanceof SnackbarLayout;
}
@Override
public boolean onDependentViewChanged(CoordinatorLayout parent, FrameLayout child,
View dependency) {
float translationY = Math.min(0, dependency.getTranslationY() - dependency.getHeight());
child.setTranslationY(translationY);
return true;
}
}
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