Files
nenya/aslib/src/main/as/com/threerings/flex/ChatDisplayBox.as
T
2012-02-27 12:16:26 -08:00

102 lines
3.0 KiB
ActionScript

//
// Nenya library - tools for developing networked games
// Copyright (C) 2002-2012 Three Rings Design, Inc., All Rights Reserved
// http://code.google.com/p/nenya/
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation; either version 2.1 of the License, or
// (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
package com.threerings.flex {
import flash.display.DisplayObjectContainer;
import flash.events.Event;
import mx.controls.TextArea;
import com.threerings.crowd.chat.client.ChatDirector;
import com.threerings.crowd.chat.client.ChatDisplay;
import com.threerings.crowd.chat.data.ChatMessage;
import com.threerings.crowd.chat.data.UserMessage;
import com.threerings.crowd.util.CrowdContext;
/**
* A very simple chat display.
*/
public class ChatDisplayBox extends TextArea
implements ChatDisplay
{
public function ChatDisplayBox (ctx :CrowdContext)
{
_ctx = ctx;
this.editable = false;
// TODO
width = 400;
height = 150;
addEventListener(Event.ADDED_TO_STAGE, handleAddRemove);
addEventListener(Event.REMOVED_FROM_STAGE, handleAddRemove);
}
// documentation inherited from interface ChatDisplay
public function clear () :void
{
this.htmlText = "";
}
// documentation inherited from interface ChatDisplay
public function displayMessage (msg :ChatMessage) :void
{
if (!_scrollBot) {
_scrollBot = (verticalScrollPosition == maxVerticalScrollPosition);
}
// display the message
if (msg is UserMessage) {
this.htmlText += "<font color=\"red\">&lt;" +
(msg as UserMessage).speaker + "&gt;</font> ";
}
this.htmlText += msg.message;
}
// handle us being added or removed from the stage
protected function handleAddRemove (event :Event) :void
{
var chatdir :ChatDirector = _ctx.getChatDirector();
if (event.type == Event.ADDED_TO_STAGE) {
chatdir.addChatDisplay(this);
} else {
chatdir.removeChatDisplay(this);
}
}
// documentation inherited
override protected function updateDisplayList (uw :Number, uh :Number) :void
{
super.updateDisplayList(uw, uh);
if (_scrollBot) {
verticalScrollPosition = maxVerticalScrollPosition;
_scrollBot = false;
}
}
/** The giver of life. */
protected var _ctx :CrowdContext;
protected var _scrollBot :Boolean;
}
}