1/*
2 * Copyright 2017 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 */
16package com.example.android.supportv7.widget.selection.simple;
17
18import android.graphics.Rect;
19import android.view.MotionEvent;
20import android.widget.LinearLayout;
21import android.widget.TextView;
22
23import androidx.annotation.Nullable;
24import androidx.recyclerview.selection.ItemDetailsLookup.ItemDetails;
25import androidx.recyclerview.widget.RecyclerView;
26
27import com.example.android.supportv7.R;
28
29final class DemoHolder extends RecyclerView.ViewHolder {
30
31    private final LinearLayout mContainer;
32    private final TextView mSelector;
33    private final TextView mLabel;
34    private final ItemDetails<Long> mDetails;
35    private @Nullable Long mKey;
36
37    DemoHolder(LinearLayout layout) {
38        super(layout);
39        mContainer = layout.findViewById(R.id.container);
40        mSelector = layout.findViewById(R.id.selector);
41        mLabel = layout.findViewById(R.id.label);
42        mDetails = new ItemDetails<Long>() {
43            @Override
44            public int getPosition() {
45                return DemoHolder.this.getAdapterPosition();
46            }
47
48            @Override
49            public Long getSelectionKey() {
50                return DemoHolder.this.getItemId();
51            }
52
53            @Override
54            public boolean inDragRegion(MotionEvent e) {
55                return DemoHolder.this.inDragRegion(e);
56            }
57
58            @Override
59            public boolean inSelectionHotspot(MotionEvent e) {
60                return DemoHolder.this.inSelectRegion(e);
61            }
62        };
63    }
64
65    void update(String label, boolean selected) {
66        mLabel.setText(label);
67        setSelected(selected);
68    }
69
70    private void setSelected(boolean selected) {
71        mContainer.setActivated(selected);
72        mSelector.setActivated(selected);
73    }
74
75    boolean inDragRegion(MotionEvent event) {
76        // If itemView is activated = selected, then whole region is interactive
77        if (itemView.isActivated()) {
78            return true;
79        }
80
81        // Do everything in global coordinates - it makes things simpler.
82        int[] coords = new int[2];
83        mSelector.getLocationOnScreen(coords);
84
85        Rect textBounds = new Rect();
86        mLabel.getPaint().getTextBounds(
87                mLabel.getText().toString(), 0, mLabel.getText().length(), textBounds);
88
89        Rect rect = new Rect(
90                coords[0],
91                coords[1],
92                coords[0] + mSelector.getWidth() + textBounds.width(),
93                coords[1] + Math.max(mSelector.getHeight(), textBounds.height()));
94
95        // If the tap occurred inside icon or the text, these are interactive spots.
96        return rect.contains((int) event.getRawX(), (int) event.getRawY());
97    }
98
99    boolean inSelectRegion(MotionEvent e) {
100        Rect iconRect = new Rect();
101        mSelector.getGlobalVisibleRect(iconRect);
102        return iconRect.contains((int) e.getRawX(), (int) e.getRawY());
103    }
104
105    ItemDetails<Long> getItemDetails() {
106        return mDetails;
107    }
108}
109