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.PorterDuff;
25import android.graphics.PorterDuffColorFilter;
26import android.graphics.drawable.TransitionDrawable;
27import android.util.AttributeSet;
28import android.view.View;
29import android.view.ViewGroup;
30
31import com.android.launcher.R;
32
33public class InfoDropTarget extends ButtonDropTarget {
34
35    private ColorStateList mOriginalTextColor;
36    private TransitionDrawable mDrawable;
37    private int mHoverColor = 0xFF0000FF;
38
39    public InfoDropTarget(Context context, AttributeSet attrs) {
40        this(context, attrs, 0);
41    }
42
43    public InfoDropTarget(Context context, AttributeSet attrs, int defStyle) {
44        super(context, attrs, defStyle);
45    }
46
47    @Override
48    protected void onFinishInflate() {
49        super.onFinishInflate();
50
51        mOriginalTextColor = getTextColors();
52
53        // Get the hover color
54        Resources r = getResources();
55        mHoverColor = r.getColor(R.color.info_target_hover_tint);
56        mHoverPaint.setColorFilter(new PorterDuffColorFilter(
57                mHoverColor, PorterDuff.Mode.SRC_ATOP));
58        mDrawable = (TransitionDrawable) getCompoundDrawables()[0];
59        mDrawable.setCrossFadeEnabled(true);
60
61        // Remove the text in the Phone UI in landscape
62        int orientation = getResources().getConfiguration().orientation;
63        if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
64            if (!LauncherApplication.isScreenLarge()) {
65                setText("");
66            }
67        }
68    }
69
70    private boolean isAllAppsApplication(DragSource source, Object info) {
71        return (source instanceof AppsCustomizePagedView) && (info instanceof ApplicationInfo);
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 ApplicationInfo) {
81            componentName = ((ApplicationInfo) d.dragInfo).componentName;
82        } else if (d.dragInfo instanceof ShortcutInfo) {
83            componentName = ((ShortcutInfo) d.dragInfo).intent.getComponent();
84        }
85        if (componentName != null) {
86            mLauncher.startApplicationDetailsActivity(componentName);
87        }
88        return false;
89    }
90
91    @Override
92    public void onDragStart(DragSource source, Object info, int dragAction) {
93        boolean isVisible = true;
94
95        // If we are dragging a widget or shortcut, hide the info target
96        if (!isAllAppsApplication(source, info)) {
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