WebContent/src/modules/chat/globalMethods.lzx

<?xml version="1.0" encoding="UTF-8" ?>
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<!-- global methods for chat module -->
<library>

<script>
<![CDATA[

	// global chat history array for all chat module
	this.chathistory=new Array();

var maxsize = 220;
var textFieldtext = "";
var startIndex = 0;
var currentLine = 0;
var textObject = null;
var myTextFormat = null;
var lineHeight = 0;

function calcLineWidthByTextField(maxsizeText,textForCalcing,fontsize, fontname){
	//check test/testLineWidth.lzx in test-directory for a detailed example calculation 
	//Debug.write("calcLineWidthByTextField: ",textForCalcing);
	
	maxsize = maxsizeText;
	startIndex = 0;
	currentLine = 0;
	textObject = new Array();
	
	textFieldtext = textForCalcing;
	myTextFormat = new TextFormat();
	myTextFormat.size = fontsize;
	myTextFormat.font = fontname;
	
	var metrics = myTextFormat.getTextExtent(textFieldtext, 100000);
	lineHeight = metrics.ascent+metrics.descent;
	//Debug.write(lineHeight);
	
	measureLine();
	
	return textObject;
}

function measureLine(){
    var remainingLength = textFieldtext.length;
        
    var testTxt = "";
    var testTxt2 = "";
    var textFieldtext2 = textFieldtext;
    var metrics = 0;
    var firstSpaceIndex = 0;
    var isFirstWord = true;

    //if ($debug) Debug.write("FUNC/chat Message: ", textFieldtext);
    //if ($debug) Debug.write("FUNC/length of chat Message: ", remainingLength);

    while (remainingLength > 0) {
        testTxt = "";
        testTxt2 = "";
        textFieldtext2 = textFieldtext;
        metrics = myTextFormat.getTextExtent(textFieldtext2, 100000);
        isFirstWord = true;
        
        //if ($debug) Debug.write("size of the current part: ", metrics.width);
        do {
            firstSpaceIndex = textFieldtext2.indexOf(" ");
            testTxt2 = testTxt;

            if (firstSpaceIndex != -1) {
                //if ($debug) Debug.write("the first space is at position: ", firstSpaceIndex);
                if (isFirstWord) {
                    testTxt = textFieldtext2.slice(startIndex, firstSpaceIndex);
                    isFirstWord = false;
                } else {
                    testTxt = testTxt + " " + textFieldtext2.slice(startIndex, firstSpaceIndex);
                }
                textFieldtext2 = textFieldtext2.slice(firstSpaceIndex + 1, textFieldtext2.length);
                metrics = myTextFormat.getTextExtent(testTxt, 100000);
            } else {
                // this is the last word
                //if ($debug) Debug.write("this is the last word!");
                testTxt = testTxt + " " + textFieldtext2;
                metrics = myTextFormat.getTextExtent(testTxt, 100000);
                if (isFirstWord && metrics.width < maxsize) {
                    testTxt2 = testTxt;
                    isFirstWord = false;
                }
                break;
            }
        } while (metrics.width < maxsize)
        
        if (metrics.width < maxsize) {
            testTxt2 = testTxt;
        }

        if (testTxt2.length == 0) {
            // the first word is already too long
            //if ($debug) Debug.write("the first word is already too long!");
            testTxt = "";
            textFieldtext2 = textFieldtext;
            metrics = myTextFormat.getTextExtent(testTxt, 100000);
            isFirstWord = true;

            while (metrics.width < maxsize) {
                testTxt = testTxt + textFieldtext2.slice(startIndex, 1);
                textFieldtext2 = textFieldtext2.slice(1, remainingLength);
                metrics = myTextFormat.getTextExtent(testTxt, 100000);
            }
            
            testTxt2 = testTxt;
        }
                
        textObject[currentLine] = new Array();
        textObject[currentLine]["text"] = testTxt2;
        metrics2 = myTextFormat.getTextExtent(textObject[currentLine]["text"], 100000);
        textObject[currentLine]["lineWidth"] = metrics2.width;
        currentLine += 1;
        //if ($debug) Debug.write("new line: ", textObject[currentLine]["text"]);
               
        textFieldtext = textFieldtext.slice(testTxt2.length, textFieldtext.length)
        if (textFieldtext.indexOf(" ") == 0) {
           textFieldtext = textFieldtext.slice(1, textFieldtext.length)
        }
        remainingLength = textFieldtext.length;

        //if ($debug) Debug.write("remaining text: ", textFieldtext);
    }
}

function getLineHeight(){
	return lineHeight;
}




]]>
</script>




<method name="addChatHistory" args="value,client">
  	<![CDATA[
  	Debug.write("addChatHistory: ",value,client);
    if (value[7]){
          var newmessage = "<FONT COLOR='"+value[5]+"' size='11'>"+client.firstname+" "+client.lastname+"</FONT>:<FONT COLOR='0x000000' size='11'>"+value[4]+"</FONT><br />";
    } else {
          var newmessage = "<FONT COLOR='"+value[5]+"' size='11'>"+client.firstname+" "+client.lastname+"</FONT>:<FONT COLOR='0x000000' size='11'>"+value[4]+"</FONT><br />";
    }
  	//Debug.write("newmessage: ",newmessage);
  	canvas._chatcontent.addChatItem(newmessage);  // Is "addChatItem()" used?  By what? h.kuze 2008/3/27
  	canvas._chathistory.push(newmessage);
  	]]>
</method>

<method name="resetFormatedChatHistory">
  	<![CDATA[
  	if (this.chathistory==null) return '';
  	var completeText = '';
  	for (var i=0;i<chathistory.length;i++){
  		completeText+=chathistory[i];
  	}
  	//Debug.write("getFormatedChatHistory: ",completeText);
  	return completeText;
  	]]>
</method>
<method name="getFormatedChatHistory">
  	<![CDATA[
  	if (this.chathistory==null) return '';
  	var completeText = '';
  	for (var i=0;i<chathistory.length;i++){
  		completeText+=chathistory[i];
  	}
  	//Debug.write("getFormatedChatHistory: ",completeText);
  	return completeText;
  	]]>
</method>


</library>