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
29import com.android.launcher3.compat.UserHandleCompat;
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
55        if (mDrawable == null) {
56            // TODO: investigate why this is ever happening. Presently only on one known device.
57            mDrawable = (TransitionDrawable) r.getDrawable(R.drawable.info_target_selector);
58            setCompoundDrawablesRelativeWithIntrinsicBounds(mDrawable, null, null, null);
59        }
60
61        if (null != mDrawable) {
62            mDrawable.setCrossFadeEnabled(true);
63        }
64
65        // Remove the text in the Phone UI in landscape
66        int orientation = getResources().getConfiguration().orientation;
67        if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
68            if (!LauncherAppState.getInstance().isScreenLarge()) {
69                setText("");
70            }
71        }
72    }
73
74    @Override
75    public boolean acceptDrop(DragObject d) {
76        // acceptDrop is called just before onDrop. We do the work here, rather than
77        // in onDrop, because it allows us to reject the drop (by returning false)
78        // so that the object being dragged isn't removed from the drag source.
79        ComponentName componentName = null;
80        if (d.dragInfo instanceof AppInfo) {
81            componentName = ((AppInfo) d.dragInfo).componentName;
82        } else if (d.dragInfo instanceof ShortcutInfo) {
83            componentName = ((ShortcutInfo) d.dragInfo).intent.getComponent();
84        } else if (d.dragInfo instanceof PendingAddItemInfo) {
85            componentName = ((PendingAddItemInfo) d.dragInfo).componentName;
86        }
87        final UserHandleCompat user;
88        if (d.dragInfo instanceof ItemInfo) {
89            user = ((ItemInfo) d.dragInfo).user;
90        } else {
91            user = UserHandleCompat.myUserHandle();
92        }
93
94        if (componentName != null) {
95            mLauncher.startApplicationDetailsActivity(componentName, user);
96        }
97
98        // There is no post-drop animation, so clean up the DragView now
99        d.deferDragViewCleanupPostAnimation = false;
100        return false;
101    }
102
103    @Override
104    public void onDragStart(DragSource source, Object info, int dragAction) {
105        boolean isVisible = true;
106
107        // Hide this button unless we are dragging something from AllApps
108        if (!source.supportsAppInfoDropTarget()) {
109            isVisible = false;
110        }
111
112        mActive = isVisible;
113        mDrawable.resetTransition();
114        setTextColor(mOriginalTextColor);
115        ((ViewGroup) getParent()).setVisibility(isVisible ? View.VISIBLE : View.GONE);
116    }
117
118    @Override
119    public void onDragEnd() {
120        super.onDragEnd();
121        mActive = false;
122    }
123
124    public void onDragEnter(DragObject d) {
125        super.onDragEnter(d);
126
127        mDrawable.startTransition(mTransitionDuration);
128        setTextColor(mHoverColor);
129    }
130
131    public void onDragExit(DragObject d) {
132        super.onDragExit(d);
133
134        if (!d.dragComplete) {
135            mDrawable.resetTransition();
136            setTextColor(mOriginalTextColor);
137        }
138    }
139}
140