/*
DynAPI Distribution
dynapi.functions.Image extension
*/
var f = dynapi.functions;
f.Image = {}; // used by dynapi.library
// Image Functions ---------------------------
f._imgTTL = 30000; // Image Time To Load (ms)
f.getImage = function(src,w,h,params) {
var img,name,p=params;
if(!p) name=src;
else name=(!p.alias)? src:p.alias;
if(dynapi.ximages[name]) img = dynapi.ximages[name];
else {
img=dynapi.ximages[name] = (w!=null&&h!=null)? new Image(w,h) : new Image();
img.w=w||null;
img.h=h||null;
img.src=src;img.params=p;
img.getHTML=dynapi._imageGetHTML;
img.reload=dynapi._imageReload;
img.dtStart=new Date();
if(p) {
var f=dynapi.functions;
if(p.oversrc) f.getImage(p.oversrc);
if(p.downsrc) f.getImage(p.downsrc);
}
if(!this._imgTmr && this._imgProgFn) this._imageProgress();
}
return img;
};
f.getFailedImages = function(){
var ar=[];
for(i in dynapi.ximages){
img=dynapi.ximages[i];
if(img && img.failed) ar[ar.length]=img;
}
return ar;
};
f.captureImageProgress=function(fn){ //fn = fn(completed,failed,total);
this._imgProgFn=fn;
this._imageProgress();
};
f._imageProgress = function(){
var i,c=0,f=0,t=0;
var img,dtEnd = new Date;
var fn=this._imgProgFn;
for(i in dynapi.ximages){
img=dynapi.ximages[i];
if(img && img.complete!=null){
t++;
img.failed=(!img.complete && (dtEnd-img.dtStart)>this._imgTTL)? true:false;
if (img.complete) c++;
else if(img.failed) f++;
}
}
if(fn) fn(c,f,t);
if(c+f<t) this._imgTmr=window.setTimeout('dynapi.functions._imageProgress()',100);
else this._imgTmr=0;
};
f.setImageTTL = function(ms){
this._imgTTL=ms;
};
dynapi._imageReload = function(){
var t=this.src;
this.src='';
this.src=t;
this.dtStart=new Date();
this.failed=false;
dynapi.functions._imageProgress();
};
dynapi._imageHookArray={};
dynapi._imageHook=function(anc,id,img,act,iSrc){
var rt,f,tf,p=dynapi._imageHookArray[id];
if(iSrc) img.src=iSrc;
if(p) {
f=p['on'+((act!='click')?'mouse':'')+act];tf=typeof(f);
if(f) rt=((tf=='string')? eval(f):f(act,anc,img,iSrc));
if(!dynapi.ua.ns4) anc.blur();
}
return (!rt)?false:rt;
};
dynapi._imageGetHTML=function(params){
var c,i,t,text,dir,xtags='';
var p=(params)? params:{};
var lparams=(this.params)? this.params:{}; // opera can't do a for(i in object) on a null variable?
var forbid =',width,height,alias,src,tooltip,link,text,textdir,'
+'oversrc,downsrc,onclick,onmouseover,onmouseout,onmouseup,onmousedown,';
for(i in lparams) {if(p[i]==null) p[i]=lparams[i]};
if(!p.name) p.name='XImage'+dynapi.ximages['__xCnTer__']++;
if(p.border==null) p.border=0;
// setup width & height
if(this.width && this.w==null) this.w=this.width;
if(this.height && this.h==null) this.h=this.height;
text=p['text']; dir=p['textdir'];
t= '<img src="'+this.src+'"'
+((this.w)? ' width="'+this.w+'"':'')
+((this.h)? ' height="'+this.h+'"':'')
+((p['tooltip'])?' alt="'+p['tooltip']+'"':'');
c='return dynapi._imageHook(this,\''+p.name+'\','+((dynapi.ua.ns4)? '((this._dynobj)? this._dynobj.doc:document)':'document')+'.images[\'';
if(p.onclick) xtags=' onclick="'+c+p.name+'\'],\'click\');"';
if(p.onmouseover||p.oversrc) xtags+=' onmouseover="'+c+p.name+'\'],\'over\',\''+((p.oversrc)?p.oversrc:'')+'\');"';
if(p.onmouseout||p.oversrc) xtags+=' onmouseout="'+c+p.name+'\'],\'out\',\''+((p.oversrc)?this.src:'')+'\');"';
if(p.onmousedown||p.downsrc) xtags+=' onmousedown="'+c+p.name+'\'],\'down\',\''+((p.downsrc)?p.downsrc:'')+'\');"';
if(p.onmouseup||p.downsrc) xtags+=' onmouseup="'+c+p.name+'\'],\'up\',\''+((p.downsrc)?((p.oversrc)?p.oversrc:this.src):'')+'\');"';
if(!p.link && (p.onclick||p.oversrc||p.downsrc)) p.link='javascript:;';
if(!xtags && p.name.indexOf('XImage')==0) p.name=null; // remove name if not needed
for(i in p){if(forbid.indexOf(','+i+',')<0 && p[i]!=null) t+=' '+i+'="'+p[i]+'"'}
t+=' />';
if (text){
dir=(dir)?(dir+'').toUpperCase():'E';
if (dir=='N') t=text+'<br>'+t;
else if (dir=='S') t=t+'<br>'+text;
else if (dir=='E') t=t+text;
else if (dir=='W') t=text+t;
}
if(p.link) t='<a title="'+((p.tooltip)? p.tooltip:'')+'" href="'+p['link']+'"'+xtags+'>'+t+'</a>'
if(xtags && p.name) dynapi._imageHookArray[p.name]=p;
return t;
};