The Tor Browser: mobile/android/base/home/HomeListView.java@fc2d59ddac77

     1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 package org.mozilla.gecko.home;

     8 import org.mozilla.gecko.R;

     9 import org.mozilla.gecko.home.HomePager.OnUrlOpenListener;

    11 import android.content.Context;

    12 import android.content.res.TypedArray;

    13 import android.database.Cursor;

    14 import android.graphics.drawable.Drawable;

    15 import android.util.AttributeSet;

    16 import android.view.ContextMenu.ContextMenuInfo;

    17 import android.view.View;

    18 import android.widget.AdapterView;

    19 import android.widget.AdapterView.OnItemLongClickListener;

    20 import android.widget.ListView;

    22 /**

    23  * HomeListView is a custom extension of ListView, that packs a HomeContextMenuInfo

    24  * when any of its rows is long pressed.

    25  */

    26 public class HomeListView extends ListView

    27                           implements OnItemLongClickListener {

    29     // ContextMenuInfo associated with the currently long pressed list item.

    30     private HomeContextMenuInfo mContextMenuInfo;

    32     // On URL open listener

    33     protected OnUrlOpenListener mUrlOpenListener;

    35     // Top divider

    36     private boolean mShowTopDivider;

    38     // ContextMenuInfo maker

    39     private HomeContextMenuInfo.Factory mContextMenuInfoFactory;

    41     public HomeListView(Context context) {

    42         this(context, null);

    43     }

    45     public HomeListView(Context context, AttributeSet attrs) {

    46         this(context, attrs, R.attr.homeListViewStyle);

    47     }

    49     public HomeListView(Context context, AttributeSet attrs, int defStyle) {

    50         super(context, attrs, defStyle);

    52         TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.HomeListView, defStyle, 0);

    53         mShowTopDivider = a.getBoolean(R.styleable.HomeListView_topDivider, false);

    54         a.recycle();

    56         setOnItemLongClickListener(this);

    57     }

    59     @Override

    60     public void onAttachedToWindow() {

    61         super.onAttachedToWindow();

    63         final Drawable divider = getDivider();

    64         if (mShowTopDivider && divider != null) {

    65             final int dividerHeight = getDividerHeight();

    66             final View view = new View(getContext());

    67             view.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, dividerHeight));

    68             addHeaderView(view);

    69         }

    70     }

    72     @Override

    73     public void onDetachedFromWindow() {

    74         super.onDetachedFromWindow();

    76         mUrlOpenListener = null;

    77     }

    79     @Override

    80     public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {

    81         Object item = parent.getItemAtPosition(position);

    83         // HomeListView could hold headers too. Add a context menu info only for its children.

    84         if (item instanceof Cursor) {

    85             Cursor cursor = (Cursor) item;

    86             if (cursor == null || mContextMenuInfoFactory == null) {

    87                 mContextMenuInfo = null;

    88                 return false;

    89             }

    91             mContextMenuInfo = mContextMenuInfoFactory.makeInfoForCursor(view, position, id, cursor);

    92             return showContextMenuForChild(HomeListView.this);

    94         } else {

    95             mContextMenuInfo = null;

    96             return false;

    97         }

    98     }

   100     @Override

   101     public ContextMenuInfo getContextMenuInfo() {

   102         return mContextMenuInfo;

   103     }

   105     @Override

   106     public void setOnItemClickListener(final AdapterView.OnItemClickListener listener) {

   107         if (listener == null) {

   108             super.setOnItemClickListener(null);

   109             return;

   110         }

   112         super.setOnItemClickListener(new AdapterView.OnItemClickListener() {

   113             @Override

   114             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

   115                 if (mShowTopDivider) {

   116                     position--;

   117                 }

   119                 listener.onItemClick(parent, view, position, id);

   120             }

   121         });

   122     }

   124     public void setContextMenuInfoFactory(final HomeContextMenuInfo.Factory factory) {

   125         mContextMenuInfoFactory = factory;

   126     }

   128     public OnUrlOpenListener getOnUrlOpenListener() {

   129         return mUrlOpenListener;

   130     }

   132     public void setOnUrlOpenListener(OnUrlOpenListener listener) {

   133         mUrlOpenListener = listener;

   134     }

   135 }

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