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    @Override
66    public boolean acceptDrop(DragObject d) {
67        // acceptDrop is called just before onDrop. We do the work here, rather than
68        // in onDrop, because it allows us to reject the drop (by returning false)
69        // so that the object being dragged isn't removed from the drag source.
70        ComponentName componentName = null;
71        if (d.dragInfo instanceof AppInfo) {
72            componentName = ((AppInfo) d.dragInfo).componentName;
73        } else if (d.dragInfo instanceof ShortcutInfo) {
74            componentName = ((ShortcutInfo) d.dragInfo).intent.getComponent();
75        } else if (d.dragInfo instanceof PendingAddItemInfo) {
76            componentName = ((PendingAddItemInfo) d.dragInfo).componentName;
77        }
78        if (componentName != null) {
79            mLauncher.startApplicationDetailsActivity(componentName);
80        }
81
82        // There is no post-drop animation, so clean up the DragView now
83        d.deferDragViewCleanupPostAnimation = false;
84        return false;
85    }
86
87    @Override
88    public void onDragStart(DragSource source, Object info, int dragAction) {
89        boolean isVisible = true;
90
91        // Hide this button unless we are dragging something from AllApps
92        if (!source.supportsAppInfoDropTarget()) {
93            isVisible = false;
94        }
95
96        mActive = isVisible;
97        mDrawable.resetTransition();
98        setTextColor(mOriginalTextColor);
99        ((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
100    }
101
102    @Override
103    public void onDragEnd() {
104        super.onDragEnd();
105        mActive = false;
106    }
107
108    public void onDragEnter(DragObject d) {
109        super.onDragEnter(d);
110
111        mDrawable.startTransition(mTransitionDuration);
112        setTextColor(mHoverColor);
113    }
114
115    public void onDragExit(DragObject d) {
116        super.onDragExit(d);
117
118        if (!d.dragComplete) {
119            mDrawable.resetTransition();
120            setTextColor(mOriginalTextColor);
121        }
122    }
123}
124