1/*
2 * Copyright (C) 2014 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
17package com.android.printspooler.widget;
18
19import android.content.Context;
20import android.util.AttributeSet;
21import android.view.accessibility.AccessibilityEvent;
22import android.view.accessibility.AccessibilityNodeInfo;
23import android.widget.CompoundButton;
24import android.widget.LinearLayout;
25import com.android.printspooler.R;
26
27/**
28 * This class represents the frame of page in the print preview list
29 * that contains the page and a footer.
30 */
31public final class PreviewPageFrame extends LinearLayout {
32    private final float mSelectedElevation;
33    private final float mNotSelectedElevation;
34
35    private final float mSelectedPageAlpha;
36    private final float mNotSelectedAlpha;
37
38    public PreviewPageFrame(Context context, AttributeSet attrs) {
39        super(context, attrs);
40        mSelectedElevation = mContext.getResources().getDimension(
41                R.dimen.selected_page_elevation);
42        mNotSelectedElevation = mContext.getResources().getDimension(
43                R.dimen.unselected_page_elevation);
44        mSelectedPageAlpha = mContext.getResources().getFraction(
45                R.fraction.page_selected_alpha, 1, 1);
46        mNotSelectedAlpha = mContext.getResources().getFraction(
47                R.fraction.page_unselected_alpha, 1, 1);
48    }
49
50    @Override
51    public void onInitializeAccessibilityEvent(AccessibilityEvent event) {
52        super.onInitializeAccessibilityEvent(event);
53        event.setClassName(CompoundButton.class.getName());
54        event.setChecked(isSelected());
55    }
56
57    @Override
58    public void onInitializeAccessibilityNodeInfo(AccessibilityNodeInfo info) {
59        super.onInitializeAccessibilityNodeInfo(info);
60        info.setClassName(CompoundButton.class.getName());
61        info.setSelected(false);
62        info.setCheckable(true);
63        info.setChecked(isSelected());
64    }
65
66    public void setSelected(boolean selected, boolean animate) {
67        if (isSelected() == selected) {
68            return;
69        }
70        setSelected(selected);
71        if (selected) {
72            if (animate) {
73                animate().translationZ(mSelectedElevation)
74                        .alpha(mSelectedPageAlpha);
75            } else {
76                setTranslationZ(mSelectedElevation);
77                setAlpha(mSelectedPageAlpha);
78            }
79        } else {
80            if (animate) {
81                animate().translationZ(mNotSelectedElevation)
82                        .alpha(mNotSelectedAlpha);
83            } else {
84                setTranslationZ(mNotSelectedElevation);
85                setAlpha(mNotSelectedAlpha);
86            }
87        }
88    }
89}
90