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.launcher2;
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
29import com.android.launcher.R;
30
31public class InfoDropTarget extends ButtonDropTarget {
32
33    private ColorStateList mOriginalTextColor;
34    private TransitionDrawable mDrawable;
35
36    public InfoDropTarget(Context context, AttributeSet attrs) {
37        this(context, attrs, 0);
38    }
39
40    public InfoDropTarget(Context context, AttributeSet attrs, int defStyle) {
41        super(context, attrs, defStyle);
42    }
43
44    @Override
45    protected void onFinishInflate() {
46        super.onFinishInflate();
47
48        mOriginalTextColor = getTextColors();
49
50        // Get the hover color
51        Resources r = getResources();
52        mHoverColor = r.getColor(R.color.info_target_hover_tint);
53        mDrawable = (TransitionDrawable) getCurrentDrawable();
54        if (null != mDrawable) {
55            mDrawable.setCrossFadeEnabled(true);
56        }
57
58        // Remove the text in the Phone UI in landscape
59        int orientation = getResources().getConfiguration().orientation;
60        if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
61            if (!LauncherApplication.isScreenLarge()) {
62                setText("");
63            }
64        }
65    }
66
67    private boolean isFromAllApps(DragSource source) {
68        return (source instanceof AppsCustomizePagedView);
69    }
70
71    @Override
72    public boolean acceptDrop(DragObject d) {
73        // acceptDrop is called just before onDrop. We do the work here, rather than
74        // in onDrop, because it allows us to reject the drop (by returning false)
75        // so that the object being dragged isn't removed from the drag source.
76        ComponentName componentName = null;
77        if (d.dragInfo instanceof ApplicationInfo) {
78            componentName = ((ApplicationInfo) d.dragInfo).componentName;
79        } else if (d.dragInfo instanceof ShortcutInfo) {
80            componentName = ((ShortcutInfo) d.dragInfo).intent.getComponent();
81        } else if (d.dragInfo instanceof PendingAddItemInfo) {
82            componentName = ((PendingAddItemInfo) d.dragInfo).componentName;
83        }
84        if (componentName != null) {
85            mLauncher.startApplicationDetailsActivity(componentName);
86        }
87
88        // There is no post-drop animation, so clean up the DragView now
89        d.deferDragViewCleanupPostAnimation = false;
90        return false;
91    }
92
93    @Override
94    public void onDragStart(DragSource source, Object info, int dragAction) {
95        boolean isVisible = true;
96
97        // Hide this button unless we are dragging something from AllApps
98        if (!isFromAllApps(source)) {
99            isVisible = false;
100        }
101
102        mActive = isVisible;
103        mDrawable.resetTransition();
104        setTextColor(mOriginalTextColor);
105        ((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
106    }
107
108    @Override
109    public void onDragEnd() {
110        super.onDragEnd();
111        mActive = false;
112    }
113
114    public void onDragEnter(DragObject d) {
115        super.onDragEnter(d);
116
117        mDrawable.startTransition(mTransitionDuration);
118        setTextColor(mHoverColor);
119    }
120
121    public void onDragExit(DragObject d) {
122        super.onDragExit(d);
123
124        if (!d.dragComplete) {
125            mDrawable.resetTransition();
126            setTextColor(mOriginalTextColor);
127        }
128    }
129}
130