1/*
2 * Copyright (C) 2011 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.launcher3;
18
19import android.content.ComponentName;
20import android.content.Context;
21import android.content.res.ColorStateList;
22import android.content.res.Configuration;
23import android.content.res.Resources;
24import android.graphics.drawable.TransitionDrawable;
25import android.util.AttributeSet;
26import android.view.View;
27import android.view.ViewGroup;
28
29public class InfoDropTarget extends ButtonDropTarget {
30
31    private ColorStateList mOriginalTextColor;
32    private TransitionDrawable mDrawable;
33
34    public InfoDropTarget(Context context, AttributeSet attrs) {
35        this(context, attrs, 0);
36    }
37
38    public InfoDropTarget(Context context, AttributeSet attrs, int defStyle) {
39        super(context, attrs, defStyle);
40    }
41
42    @Override
43    protected void onFinishInflate() {
44        super.onFinishInflate();
45
46        mOriginalTextColor = getTextColors();
47
48        // Get the hover color
49        Resources r = getResources();
50        mHoverColor = r.getColor(R.color.info_target_hover_tint);
51        mDrawable = (TransitionDrawable) getCurrentDrawable();
52        if (null != mDrawable) {
53            mDrawable.setCrossFadeEnabled(true);
54        }
55
56        // Remove the text in the Phone UI in landscape
57        int orientation = getResources().getConfiguration().orientation;
58        if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
59            if (!LauncherAppState.getInstance().isScreenLarge()) {
60                setText("");
61            }
62        }
63    }
64
65    private boolean isFromAllApps(DragSource source) {
66        return (source instanceof AppsCustomizePagedView);
67    }
68
69    @Override
70    public boolean acceptDrop(DragObject d) {
71        // acceptDrop is called just before onDrop. We do the work here, rather than
72        // in onDrop, because it allows us to reject the drop (by returning false)
73        // so that the object being dragged isn't removed from the drag source.
74        ComponentName componentName = null;
75        if (d.dragInfo instanceof AppInfo) {
76            componentName = ((AppInfo) d.dragInfo).componentName;
77        } else if (d.dragInfo instanceof ShortcutInfo) {
78            componentName = ((ShortcutInfo) d.dragInfo).intent.getComponent();
79        } else if (d.dragInfo instanceof PendingAddItemInfo) {
80            componentName = ((PendingAddItemInfo) d.dragInfo).componentName;
81        }
82        if (componentName != null) {
83            mLauncher.startApplicationDetailsActivity(componentName);
84        }
85
86        // There is no post-drop animation, so clean up the DragView now
87        d.deferDragViewCleanupPostAnimation = false;
88        return false;
89    }
90
91    @Override
92    public void onDragStart(DragSource source, Object info, int dragAction) {
93        boolean isVisible = true;
94
95        // Hide this button unless we are dragging something from AllApps
96        if (!isFromAllApps(source)) {
97            isVisible = false;
98        }
99
100        mActive = isVisible;
101        mDrawable.resetTransition();
102        setTextColor(mOriginalTextColor);
103        ((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
104    }
105
106    @Override
107    public void onDragEnd() {
108        super.onDragEnd();
109        mActive = false;
110    }
111
112    public void onDragEnter(DragObject d) {
113        super.onDragEnter(d);
114
115        mDrawable.startTransition(mTransitionDuration);
116        setTextColor(mHoverColor);
117    }
118
119    public void onDragExit(DragObject d) {
120        super.onDragExit(d);
121
122        if (!d.dragComplete) {
123            mDrawable.resetTransition();
124            setTextColor(mOriginalTextColor);
125        }
126    }
127}
128