packages/SystemUI/src/com/android/systemui/statusbar/stack/AmbientState.java

/*
 * Copyright (C) 2014 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.systemui.statusbar.stack;

import android.view.View;

import java.util.ArrayList;

/**
 * A global state to track all input states for the algorithm.
 */
public class AmbientState {
    private ArrayList<View> mDraggedViews = new ArrayList<View>();
    private int mScrollY;
    private boolean mDimmed;
    private View mActivatedChild;

    public int getScrollY() {
        return mScrollY;
    }

    public void setScrollY(int scrollY) {
        this.mScrollY = scrollY;
    }

    public void onBeginDrag(View view) {
        mDraggedViews.add(view);
    }

    public void onDragFinished(View view) {
        mDraggedViews.remove(view);
    }

    public ArrayList<View> getDraggedViews() {
        return mDraggedViews;
    }

    /**
     * @param dimmed Whether we are in a dimmed state (on the lockscreen), where the backgrounds are
     *               translucent and everything is scaled back a bit.
     */
    public void setDimmed(boolean dimmed) {
        mDimmed = dimmed;
    }

    /**
     * In dimmed mode, a child can be activated, which happens on the first tap of the double-tap
     * interaction. This child is then scaled normally and its background is fully opaque.
     */
    public void setActivatedChild(View activatedChild) {
        mActivatedChild = activatedChild;
    }

    public boolean isDimmed() {
        return mDimmed;
    }

    public View getActivatedChild() {
        return mActivatedChild;
    }
}