/*
DynAPI Distribution
LoadPanel Class
The DynAPI Distribution is distributed under the terms of the GNU LGPL license.
Requirements:
dynapi.api.Dynlayer
*/
function LoadPanel(url) {
this.DynLayer = DynLayer;
this.DynLayer();
this._resizeH=true;
this._resizeW=false;
this._elmID = this.id+'_loadElm';
this._busy = true;
if (url) this._url = url;
this.setOverflow('hidden');
this.marginWidth = 5;
this.marginHeight = 5;
var lp = this;
this.historyIndex = -1;
this.history = [];
this.history.back = function() {
if (!lp._busy && lp.historyIndex>0) {
lp.historyIndex--;
lp.reload();
}
};
this.history.forward = function() {
if (!lp._busy && lp.historyIndex<lp.history.length-1) {
lp.historyIndex++;
lp.reload();
}
};
this.onPreCreate(LoadPanel.PreCreateEvent);
this.onCreate(LoadPanel.CreateEvent);
};
LoadPanel.PreCreateEvent = function(e) {
if (dynapi.ua.ns4) this.html = '<layer left=0 top=0 width='+this.w+' height='+this.h+' name="'+this._elmID+'" visibility="inherit"></layer>';
else {
var html = '<iframe name="'+this._elmID+'" style="width:0px; height:0px; visibility:hidden;"></iframe>'; //visibility: hidden; display: none;
this._loadlyr = new DynLayer(html);
this._loadlyr.setVisible(false);
dynapi.document.addChild(this._loadlyr);
}
};
LoadPanel.CreateEvent = function(e) {
if(!dynapi.ua.opera) this._createElm();
else setTimeout(this+'._createElm();',10); // opera 7 needs this timeout
};
var p = LoadPanel.prototype = new DynLayer;
p._createElm = function(e) {
if (dynapi.ua.ns4) this._loadElm = this.doc.layers[0];
else this._loadElm = dynapi.frame.frames[this._elmID];
this._busy = false;
if (this._url) setTimeout(this+'.setURL("'+this._url+'")', 10);
};
p._DynLayer_setSize = DynLayer.prototype.setSize;
p.setSize = function(w,h) {
var r = this._DynLayer_setSize(w,h);
//if (r && this._created && !this._isReloading && this.autoH && this.url) this.reload();
};
p.getURL=function() {
return this.history[this.historyIndex];
};
p.setURL = function(url, skipHistory) {
if (typeof(url)=='string') {
if (!this._created || this._busy) this._url = url;
else {
if (skipHistory!=true) {
this.historyIndex++;
this.history[this.historyIndex] = url;
this.history.length = this.historyIndex+1;
}
var id = Math.random()+'';
url += (url.indexOf('?')==-1)? '?' : '&';
url += 'rand='+id.substring(2)+'&lpElementID='+this.id;
this._busy = true;
if (dynapi.ua.ns4) this._loadElm.src = url;
else this._loadElm.document.location.href = url;
}
}
};
p.reload = function() {
this.setURL(this.history[this.historyIndex], true);
};
p.clear = function() {
this._loadElm.document.write();
this._loadElm.document.close();
if (!dynapi.ua.ns4) this.setHTML('');
this.historyIndex = -1;
this.history = [];
};
p._notify = function() {
this._busy = false;
if (dynapi.ua.ns4) {
var elm = this._loadElm;
var h = elm.document.height;
elm.clip.height = h;
elm.clip.width = this.w;
this.setHeight(h);
setTimeout(this+'.invokeEvent("change")',1);
}
else {
var html = this._loadElm.document.body.innerHTML;
if (html) {
this.setHTML(html);
setTimeout(this+'._notify2()',10); // ie/mac needs an extra ms to properly get content height
}
}
};
p._notify2 = function() {
var h = this.getContentHeight();
if (!h) setTimeout(this+'._notify2()',200);
this.setHeight(h);
var bg = this._loadElm.document.bgColor;
if (bg) this.setBgColor(bg);
setTimeout(this+'.invokeEvent("change")',1);
};
LoadPanel.notify = function(elm) {
var url,id,obj;
if (dynapi.ua.ns4) url = elm.src;
else url = elm.document.location.href;
var args = dynapi.functions.getURLArguments(url);
obj = DynObject.all[args["lpElementID"]];
if (obj!=null) {
elm.onload = function() {
setTimeout(obj+'._notify("'+id+'","'+url+'")',100);
};
return obj; // returns loadpanel to the page
}
else {
return false; // error
}
};