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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.quickstep.views;
     18 
     19 import static com.android.launcher3.userevent.nano.LauncherLogProto.Action.Touch.TAP;
     20 import static com.android.launcher3.userevent.nano.LauncherLogProto.ControlType.CLEAR_ALL_BUTTON;
     21 
     22 import android.content.Context;
     23 import android.graphics.Rect;
     24 import android.util.AttributeSet;
     25 import android.util.FloatProperty;
     26 import android.view.MotionEvent;
     27 import android.view.View;
     28 
     29 import com.android.launcher3.InsettableFrameLayout;
     30 import com.android.launcher3.R;
     31 
     32 import java.util.ArrayList;
     33 
     34 public class RecentsViewContainer extends InsettableFrameLayout {
     35     public static final FloatProperty<RecentsViewContainer> CONTENT_ALPHA =
     36             new FloatProperty<RecentsViewContainer>("contentAlpha") {
     37                 @Override
     38                 public void setValue(RecentsViewContainer view, float v) {
     39                     view.setContentAlpha(v);
     40                 }
     41 
     42                 @Override
     43                 public Float get(RecentsViewContainer view) {
     44                     return view.mRecentsView.getContentAlpha();
     45                 }
     46             };
     47 
     48     private final Rect mTempRect = new Rect();
     49 
     50     private RecentsView mRecentsView;
     51     private ClearAllButton mClearAllButton;
     52 
     53     public RecentsViewContainer(Context context, AttributeSet attrs) {
     54         super(context, attrs);
     55     }
     56 
     57     @Override
     58     protected void onFinishInflate() {
     59         super.onFinishInflate();
     60 
     61         mClearAllButton = findViewById(R.id.clear_all_button);
     62         mClearAllButton.setOnClickListener((v) -> {
     63             mRecentsView.mActivity.getUserEventDispatcher()
     64                     .logActionOnControl(TAP, CLEAR_ALL_BUTTON);
     65             mRecentsView.dismissAllTasks();
     66         });
     67 
     68         mRecentsView = findViewById(R.id.overview_panel);
     69         mClearAllButton.forceHasOverlappingRendering(false);
     70 
     71         mRecentsView.setClearAllButton(mClearAllButton);
     72         mClearAllButton.setRecentsView(mRecentsView);
     73 
     74         if (mRecentsView.isRtl()) {
     75             mClearAllButton.setNextFocusRightId(mRecentsView.getId());
     76             mRecentsView.setNextFocusLeftId(mClearAllButton.getId());
     77         } else {
     78             mClearAllButton.setNextFocusLeftId(mRecentsView.getId());
     79             mRecentsView.setNextFocusRightId(mClearAllButton.getId());
     80         }
     81     }
     82 
     83     @Override
     84     protected void onLayout(boolean changed, int left, int top, int right, int bottom) {
     85         super.onLayout(changed, left, top, right, bottom);
     86 
     87         mRecentsView.getTaskSize(mTempRect);
     88 
     89         mClearAllButton.setTranslationX(
     90                 (mRecentsView.isRtl() ? 1 : -1) *
     91                         (getResources().getDimension(R.dimen.clear_all_container_width)
     92                                 - mClearAllButton.getMeasuredWidth()) / 2);
     93         mClearAllButton.setTranslationY(
     94                 mTempRect.top + (mTempRect.height() - mClearAllButton.getMeasuredHeight()) / 2
     95                         - mClearAllButton.getTop());
     96     }
     97 
     98     @Override
     99     public boolean onTouchEvent(MotionEvent ev) {
    100         super.onTouchEvent(ev);
    101         // Do not let touch escape to siblings below this view. This prevents scrolling of the
    102         // workspace while in Recents.
    103         return true;
    104     }
    105 
    106     public void setContentAlpha(float alpha) {
    107         if (alpha == mRecentsView.getContentAlpha()) {
    108             return;
    109         }
    110         mRecentsView.setContentAlpha(alpha);
    111         setVisibility(alpha > 0 ? VISIBLE : GONE);
    112     }
    113 
    114     @Override
    115     public void addFocusables(ArrayList<View> views, int direction, int focusableMode) {
    116         if (mRecentsView.getChildCount() > 0) {
    117             // Carousel is first in tab order.
    118             views.add(mRecentsView);
    119             views.add(mClearAllButton);
    120         }
    121     }
    122 
    123     public boolean requestFocus(int direction, Rect previouslyFocusedRect) {
    124         return mRecentsView.requestFocus(direction, previouslyFocusedRect) ||
    125                 super.requestFocus(direction, previouslyFocusedRect);
    126     }
    127 
    128     @Override
    129     public void addChildrenForAccessibility(ArrayList<View> outChildren) {
    130         outChildren.add(mRecentsView);
    131     }
    132 }