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class TextBuilder {

public static function ShowText(mc:MovieClip, direction:Boolean, wdt:Number, s:String,myColor:String, myFont:String, mySize:Number, myEmbed:Boolean, speed:Number, method:Function, alphaTrans:Boolean, myExtra:Object, callBack:Function, validity:MovieClip, param:Array){

if(!mc.TextBuilderEnterClip) mc.clipEnter=mc.createEmptyMovieClip("TextBuilderEnterClip",mc.getNextHighestDepth());

mc.myText=mc.createTextField("dynText", 1, 0, 0, wdt, 1);
wdt ? (mc.myText.multiline = true, mc.myText.wordWrap = true) : (mc.myText.multiline = false,mc.myText.wordWrap = false);
mc.myAlign = myExtra.myAlign ? myExtra.myAlign : "left";
mc.myLeading = myExtra.myLeading ? myExtra.myLeading : 0;
myExtra.myBackground ? ( mc.myText.background = true, mc.myText.backgroundColor = myExtra.myBackground ) : mc.myText.background = false;
myExtra.mySelectable ? mc.myText.selectable = true : mc.myText.selectable = false;
myExtra.myBorder ? mc.myText.border = true : mc.myText.border = false;
mc.myText.html = true;
mc.myText.antiAliasType="advanced"
mc.myText.embedFonts = myEmbed;
mc.myText.autoSize = "left";

mc.clipEnter.t=0;
mc.clipEnter.d=speed;
mc.clipEnter.s=0;
mc.clipEnter.e=s.length;
mc.clipEnter.st=s;
mc.clipEnter.myDirection=direction;
mc.clipEnter.transAlpha=alphaTrans;
mc.clipEnter.sa=mc._alpha;
mc.clipEnter.ea=100;
mc.firstHalfString="<TEXTFORMAT LEADING=""+mc.myLeading+""><P ALIGN=""+mc.myAlign+""><FONT FACE=""+myFont+"" SIZE=""+mySize+"" COLOR=""+myColor+"">"
mc.secondHalfString="</FONT></P></TEXTFORMAT>";

mc.clipEnter.onEnterFrame=function(){
if (this.t++<this.d){
if(this.transAlpha)mc._alpha=Math.round(method(this.t,this.sa,this.ea,this.d));
if(this.myDirection){
mc.myText.htmlText=mc.firstHalfString+this.st.substr(-Math.round(method(this.t,this.s,this.e,this.d)),Math.round(method(this.t,this.s,this.e,this.d)))+mc.secondHalfString;
this.tempString=this.st.substr(-Math.round(method(this.t,this.s,this.e,this.d)),Math.round(method(this.t,this.s,this.e,this.d)));
} else {
mc.myText.htmlText=mc.firstHalfString+this.st.substr(0,Math.round(method(this.t,this.s,this.e,this.d)))+mc.secondHalfString;
this.tempString=this.st.substr(0,Math.round(method(this.t,this.s,this.e,this.d)));
}
} else {
this.onEnterFrame=undefined;
callBack.apply(validity,param);
}
}
}

public static function HideText(mc:MovieClip, direction:Boolean, speed:Number, method:Function, alphaTrans:Boolean, callBack:Function, validity:MovieClip, param:Array){

mc.clipEnter.t=0;
mc.clipEnter.d=speed;
mc.clipEnter.s=mc.clipEnter.tempString.length;
mc.clipEnter.e=-mc.clipEnter.tempString.length;
mc.clipEnter.myDirection=direction;
mc.clipEnter.transAlpha=alphaTrans;
mc.clipEnter.sa=mc._alpha;
mc.clipEnter.ea=-mc._alpha;
mc.clipEnter.onEnterFrame=function(){
if (this.t++<this.d){
if(this.transAlpha)mc._alpha=Math.round(method(this.t,this.sa,this.ea,this.d));
if(this.myDirection){
mc.myText.htmlText=mc.firstHalfString+this.tempString.substr(-Math.round(method(this.t,this.s,this.e,this.d)),Math.round(method(this.t,this.s,this.e,this.d)))+mc.secondHalfString;
this.tempString=this.st.substr(-Math.round(method(this.t,this.s,this.e,this.d)),Math.round(method(this.t,this.s,this.e,this.d)));
} else {
mc.myText.htmlText=mc.firstHalfString+this.tempString.substr(0,Math.round(method(this.t,this.s,this.e,this.d)))+mc.secondHalfString;
this.tempString=this.st.substr(0,Math.round(method(this.t,this.s,this.e,this.d)));
}
} else {
this.onEnterFrame=undefined;
callBack.apply(validity, param);
}
}
}

public static function MadeText(mc:MovieClip, wdt:Number, s:String, myColor:String, myFont:String, mySize:Number, myEmbed:Boolean , myExtra:Object){

mc.myAlign = myExtra.myAlign ? myExtra.myAlign : "left";
mc.myLeading = myExtra.tLeading ? myExtra.myLeading : 0;

mc.myText=mc.createTextField("dynText", 1, 0, 0, wdt, 1);
wdt ? (mc.myText.multiline = true, mc.myText.wordWrap = true) : (mc.myText.multiline = false,mc.myText.wordWrap = false);
myExtra.myBackground ? ( mc.myText.background = true, mc.myText.backgroundColor = myExtra.myBackground ) : mc.myText.background = false;
myExtra.mySelectable ? mc.myText.selectable = true : mc.myText.selectable = false;
myExtra.myBorder ? mc.myText.border = true : mc.myText.border = false;
mc.myText.html = true;
mc.myText.antiAliasType="advanced";
mc.myText.embedFonts = myEmbed;
mc.myText.autoSize = "left";
mc.firstHalfString="<TEXTFORMAT LEADING=""+mc.myLeading+""><P ALIGN=""+mc.myAlign+""><FONT FACE=""+myFont+"" SIZE=""+mySize+"" COLOR=""+myColor+"">"
mc.secondHalfString="</FONT></P></TEXTFORMAT>";
mc.myText.htmlText=mc.firstHalfString+s+mc.secondHalfString;
}
}

source