Crossfire JXClient, Trunk  R20561
ScrollListCommand.java
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1 /*
2  * This file is part of JXClient, the Fullscreen Java Crossfire Client.
3  *
4  * JXClient is free software; you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation; either version 2 of the License, or
7  * (at your option) any later version.
8  *
9  * JXClient is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with JXClient; if not, write to the Free Software
16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
17  *
18  * Copyright (C) 2005-2008 Yann Chachkoff.
19  * Copyright (C) 2006-2011 Andreas Kirschbaum.
20  */
21 
22 package com.realtime.crossfire.jxclient.gui.commands;
23 
26 import org.jetbrains.annotations.NotNull;
27 
32 public class ScrollListCommand implements GUICommand {
33 
37  @NotNull
38  private final GUIScrollable list;
39 
43  private final int distance;
44 
50  public ScrollListCommand(@NotNull final GUIScrollable list, final int distance) {
51  this.list = list;
52  this.distance = distance;
53  }
54 
58  @Override
59  public boolean canExecute() {
60  return list.canScroll(distance);
61  }
62 
66  @Override
67  public void execute() {
68  list.scroll(distance);
69  }
70 
71 }
void execute()
Executes the command.Does nothing if called while canExecute() returnsfalse .
A GUICommand which scrolls a GUIScrollable instance.
void scroll(int distance)
Scrolls the element.
ScrollListCommand(@NotNull final GUIScrollable list, final int distance)
Creates a new instance.
boolean canScroll(int distance)
Returns whether scrolling is possible.
boolean canExecute()
Returns whether this command may be executed.whether this command may be executed ...
Interface for GUIElements that support scrolling.