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      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 
     17 package com.android.launcher3;
     18 
     19 import android.content.ComponentName;
     20 import android.content.Context;
     21 import android.content.res.ColorStateList;
     22 import android.content.res.Configuration;
     23 import android.content.res.Resources;
     24 import android.graphics.drawable.TransitionDrawable;
     25 import android.util.AttributeSet;
     26 import android.view.View;
     27 import android.view.ViewGroup;
     28 
     29 import com.android.launcher3.compat.UserHandleCompat;
     30 
     31 public 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