/******************************************************************************
Name:    Highslide HTML Extension
Version: Unstable draft
Author:  Torstein Hønsi
Support: http://vikjavev.no/highslide/forum
Email:   See http://vikjavev.no/megsjol

Licence:
Highslide JS is licensed under a Creative Commons Attribution-NonCommercial 2.5
License (http://creativecommons.org/licenses/by-nc/2.5/).

You are free:
        * to copy, distribute, display, and perform the work
        * to make derivative works

Under the following conditions:
        * Attribution. You must attribute the work in the manner  specified by  the
          author or licensor.
        * Noncommercial. You may not use this work for commercial purposes.

* For  any  reuse  or  distribution, you  must make clear to others the license
  terms of this work.
* Any  of  these  conditions  can  be  waived  if  you  get permission from the 
  copyright holder.

Your fair use and other rights are in no way affected by the above.
******************************************************************************/

hs.allowWidthReduction = false;
hs.allowHeightReduction = true;
hs.objectLoadTime = 'before'; // Load iframes 'before' or 'after' expansion.
hs.cacheAjax = true; // Cache ajax popups for instant display. Can be overridden for each popup.
hs.preserveContent = true; // Preserve changes made to the content and position of HTML popups.

// These properties can be overridden in the function call for each expander:
hs.push(hs.overrides, 'contentId');
hs.push(hs.overrides, 'allowWidthReduction');
hs.push(hs.overrides, 'allowHeightReduction');
hs.push(hs.overrides, 'objectType');
hs.push(hs.overrides, 'objectWidth');
hs.push(hs.overrides, 'objectHeight');
hs.push(hs.overrides, 'objectLoadTime');
hs.push(hs.overrides, 'swfObject');
hs.push(hs.overrides, 'cacheAjax');
hs.push(hs.overrides, 'preserveContent');

// Internal
hs.preloadTheseAjax = [];
hs.cacheBindings = [];
hs.sleeping = [];
hs.clearing = hs.createElement('div', null, 
                { clear: 'both', borderTop: '1px solid white' }, null, true);

hs.htmlExpand = function(a, params, custom) {
        if (!hs.$(params.contentId) && !hs.origHTML[params.contentId]) return true;
        
        for (var i = 0; i < hs.sleeping.length; i++) {
                if (hs.sleeping[i] && hs.sleeping[i].a == a) {
                        hs.sleeping[i].awake();
                        hs.sleeping[i] = null;
                        return false;
                }
        }
        try {
                hs.hasHtmlexpanders = true;
        new HsExpander(a, params, custom, 'html');
        return false;
        } catch (e) {
                return true;
        }       
};

hs.identifyContainer = function (parent, className) {
        for (i = 0; i < parent.childNodes.length; i++) {
        if (parent.childNodes[i].className == className) {
                        return parent.childNodes[i];
                }
        }
};
/*
hs.geckoBug = function(d) { // freezes on DOM access to flash object
        return (!hs.ie && d.className && d.className == 'highslide-body' 
                && hs.expanders[hs.getWrapperKey(d)] && hs.expanders[hs.getWrapperKey(d)].swfObject);   
};

hs.cloneFix = function (orig, clone) { // ie bug JRA-8560
        var selO = orig.getElementsByTagName('SELECT');
        var selC = clone.getElementsByTagName('SELECT');
        for (i = 0; i < selO.length; i++) {
                selC[i].selectedIndex = selO[i].selectedIndex;
        }
        return clone;
};
*/
hs.preloadAjax = function (e) {
        var aTags = document.getElementsByTagName('A');
        var a, re;
        for (i = 0; i < aTags.length; i++) {
                a = aTags[i];
                re = hs.isHsAnchor(a);
                if (re && re[0] == 'hs.htmlExpand' && hs.getParam(a, 'objectType') == 'ajax' && hs.getParam(a, 'cacheAjax')) {
                        hs.push(hs.preloadTheseAjax, a);
                }
        }
        hs.preloadAjaxElement(0);
};

hs.preloadAjaxElement = function (i) {
        if (!hs.preloadTheseAjax[i]) return;
        var a = hs.preloadTheseAjax[i];
        var cache = hs.getNode(hs.getParam(a, 'contentId'));
        var ajax = new HsAjax(a, cache);        
        ajax.onError = function () { };
        ajax.onLoad = function () {
                //hs.setId(cache, /-hsOrig$/, 1);
                //hs.setId(cache, '-hsCache'+ hs.cacheCounter);
                hs.genContainer();
                hs.container.appendChild(cache);
                hs.push(hs.cacheBindings, [a, cache]);
                //hs.cacheBindings[cache.id] = a;
                //hs.cacheCounter++;
                hs.preloadAjaxElement(i + 1);
        };
        ajax.run();
};

hs.getCacheBinding = function (a) {
        for (i = 0; i < hs.cacheBindings.length; i++) {
                if (hs.cacheBindings[i][0] == a) return hs.cacheBindings[i][1];
        }
};

HsExpander.prototype.htmlCreate = function () {
        this.tempContainer = hs.createElement('div', null,
                {
                        padding: '0 '+ hs.marginRight +'px 0 '+ hs.marginLeft +'px',
                        position: 'absolute',
                        left: 0,
                        top: 0
                },
                document.body
        );
        this.innerContent = hs.getCacheBinding(this.a);
        //if (this.innerContent) hs.setId(this.innerContent, /-hsCache[0-9]+/, 1);
        //else this.innerContent = hs.getNode(this.contentId);
        if (this.innerContent) this.preserveContent = true;
        else this.innerContent = hs.getNode(this.contentId);
        
        this.setObjContainerSize(this.innerContent);
        this.tempContainer.appendChild(this.innerContent); // to get full width
        hs.setStyles (this.innerContent, { position: 'relative', visibility: 'hidden' });
        this.innerContent.className += ' highslide-display-block';
        
        this.content = hs.createElement(
        'div',
        {       className: 'highslide-html' },
                {
                        position: 'relative',
                        zIndex: 3,
                        overflow: 'hidden',
                        width: this.thumbWidth +'px',
                        height: this.thumbHeight +'px'
                }
        );
    
        if (this.objectType == 'ajax' && !hs.getCacheBinding(this.a)) {
        var ajax = new HsAjax(this.a, this.innerContent);
        var pThis = this;
        ajax.onLoad = function () {     pThis.onLoad(); };
        ajax.onError = function () { location.href = hs.getSrc(this.a); };
        ajax.run();
        }
    else this.onLoad();
};
    
HsExpander.prototype.htmlGetSize = function() {
        this.innerContent.appendChild(hs.clearing);
        this.newWidth = this.innerContent.offsetWidth;
    this.newHeight = this.innerContent.offsetHeight;
    this.innerContent.removeChild(hs.clearing);
    if (hs.ie && this.newHeight > parseInt(this.innerContent.currentStyle.height)) { // ie css bug
                this.newHeight = parseInt(this.innerContent.currentStyle.height);
        }
};

HsExpander.prototype.setObjContainerSize = function(parent, auto) {
        if (this.swfObject || this.objectType == 'iframe') {
                var c = hs.identifyContainer(parent, 'highslide-body');
                c.style.width = this.swfObject ? this.swfObject.attributes.width +'px' : this.objectWidth +'px';
                c.style.height = this.swfObject ? this.swfObject.attributes.height +'px' : this.objectHeight +'px';
        }
};

HsExpander.prototype.writeExtendedContent = function () {
        if (this.hasExtendedContent) return;
        this.objContainer = hs.identifyContainer(this.innerContent, 'highslide-body');
        if (this.objectType == 'iframe') {
                if (hs.ie && hs.ieVersion() < 5.5) window.location.href = hs.getSrc(this.a);
                var key = this.key;
                this.iframe = hs.createElement('iframe', { frameBorder: 0 },
                   { width: this.objectWidth +'px', height: this.objectHeight +'px' }, 
                   this.objContainer);
                if (hs.safari) this.iframe.src = null;
                this.iframe.src = hs.getSrc(this.a);
                
                if (this.objectLoadTime == 'after') this.correctIframeSize();
                
        } else if (this.swfObject) {    
                this.objContainer.id = this.objContainer.id || 'hs-flash-id-' + this.key;
                this.swfObject.write(this.objContainer.id);     
        }
        this.hasExtendedContent = true;
};

HsExpander.prototype.correctIframeSize = function () {
        var wDiff = this.innerContent.offsetWidth - this.objContainer.offsetWidth;
        if (wDiff < 0) wDiff = 0;
    
        var hDiff = this.innerContent.offsetHeight - this.objContainer.offsetHeight;
        hs.setStyles(this.iframe, { width: (this.x.span - wDiff) +'px', height: (this.y.span - hDiff) +'px' });
    hs.setStyles(this.objContainer, { width: this.iframe.style.width, height: this.iframe.style.height });
    
    this.scrollingContent = this.iframe;
    this.scrollerDiv = this.scrollingContent;
};

HsExpander.prototype.htmlSizeOperations = function () {
        this.setObjContainerSize(this.innerContent);
        
        if (this.objectLoadTime == 'before') this.writeExtendedContent();               

    // handle minimum size
    if (this.x.span < this.newWidth && !this.allowWidthReduction) this.x.span = this.newWidth;
    if (this.y.span < this.newHeight && !this.allowHeightReduction) this.y.span = this.newHeight;
    this.scrollerDiv = this.innerContent;
    
    this.mediumContent = hs.createElement('div', null, 
        { 
                width: this.x.span +'px',
                position: 'relative',
                left: (this.x.min - this.thumbLeft) +'px',
                top: (this.y.min - this.thumbTop) +'px'
        }, this.content, true);
        
    this.mediumContent.appendChild(this.innerContent);
    document.body.removeChild(this.tempContainer);
    hs.setStyles(this.innerContent, { border: 'none', width: 'auto', height: 'auto' });
    
    var node = hs.identifyContainer(this.innerContent, 'highslide-body');
    if (node && !this.swfObject && this.objectType != 'iframe') {    
        var cNode = node; // wrap to get true size
        node = hs.createElement(cNode.nodeName, null, {overflow: 'hidden'}, null, true);
        cNode.parentNode.insertBefore(node, cNode);
        node.appendChild(hs.clearing); // IE6
        node.appendChild(cNode);
        
        var wDiff = this.innerContent.offsetWidth - node.offsetWidth;
        var hDiff = this.innerContent.offsetHeight - node.offsetHeight;
        node.removeChild(hs.clearing);
        
        var kdeBugCorr = hs.safari || navigator.vendor == 'KDE' ? 1 : 0; // KDE repainting bug
        hs.setStyles(node, { 
                        width: (this.x.span - wDiff - kdeBugCorr - 4) +'px', 
                        height: (this.y.span - hDiff) +'px',
                        overflow: 'auto', 
                        position: 'relative' 
                } 
        );
                if (kdeBugCorr && cNode.offsetHeight > node.offsetHeight)       {
                node.style.width = (parseInt(node.style.width) + kdeBugCorr) + 'px';
                }
        this.scrollingContent = node;
        this.scrollerDiv = this.scrollingContent;
        
        } 
        
    if (this.iframe && this.objectLoadTime == 'before') this.correctIframeSize();
    if (!this.scrollingContent && this.y.span < this.mediumContent.offsetHeight) this.scrollerDiv = this.content;
        
        if (this.scrollerDiv == this.content && !this.allowWidthReduction && this.objectType != 'iframe') {
                this.x.span += 17; // room for scrollbars
        }
        if (this.scrollerDiv && this.scrollerDiv.offsetHeight > this.scrollerDiv.parentNode.offsetHeight) {
                setTimeout("try { hs.expanders["+ this.key +"].scrollerDiv.style.overflow = 'auto'; } catch(e) {}",
                         hs.expandDuration);
        }
};

HsExpander.prototype.htmlSetSize = function (w, h, x, y, offset, end) {
        try {
                hs.setStyles(this.wrapper, { visibility: 'visible', left: x +'px', top: y +'px'});
                hs.setStyles(this.content, { width: w +'px', height: h +'px' });
                hs.setStyles(this.mediumContent, { left: (this.x.min - x) +'px', top: (this.y.min - y) +'px' });
                
                this.innerContent.style.visibility = 'visible';
                
                if (this.objOutline && this.outlineWhileAnimating) {
                        var o = this.objOutline.offset - offset;
                        this.positionOutline(x + o, y + o, w - 2*o, h - 2*o, 1);
                }
                                
        } catch (e) {
                window.location.href = hs.getSrc(this.a);
        }
};

HsExpander.prototype.reflow = function () {
        hs.setStyles(this.scrollerDiv, { height: 'auto', width: 'auto' });
        this.x.span = this.innerContent.offsetWidth;
        this.y.span = this.innerContent.offsetHeight;
        var size = { width: this.x.span +'px', height: this.y.span +'px' };
        hs.setStyles(this.content, size);
        this.positionOutline(this.x.min, this.y.min, this.x.span, this.y.span);
};

HsExpander.prototype.htmlOnClose = function() {
        if (this.objectLoadTime == 'after' && !this.preserveContent) this.destroyObject();              
        if (this.scrollerDiv && this.scrollerDiv != this.scrollingContent) 
                this.scrollerDiv.style.overflow = 'hidden';
        if (this.swfObject) hs.$(this.swfObject.getAttribute('id')).StopPlay();
};

HsExpander.prototype.destroyObject = function () {
        this.objContainer.innerHTML = '';
};

HsExpander.prototype.sleep = function() {
        if (this.objOutline) this.objOutline.table.className = 'highslide-display-none';
        this.wrapper.className += ' highslide-display-none';
        //hs.setId(this.content, '-hsSleeping'+ this.key);
        hs.push(hs.sleeping, this);
};

HsExpander.prototype.awake = function() {
        hs.expanders[this.key] = this;
        
        this.wrapper.className = this.wrapper.className.replace(/highslide-display-none/, '');
        var z = hs.zIndexCounter++;
        this.wrapper.style.zIndex = z;
        if (o = this.objOutline) {
                if (!this.outlineWhileAnimating) o.table.style.visibility = 'hidden';
                o.table.className = null;
                o.table.style.zIndex = z;
        }
        //hs.setId(this.content, '-hsSleeping'+ this.key, 1);
        this.show();
};

// HsAjax object prototype
HsAjax = function (a, content) {
        this.a = a;
        this.content = content;
};

HsAjax.prototype.run = function () {
        try { this.xmlHttp = new XMLHttpRequest(); }
        catch (e) {
                try { this.xmlHttp = new ActiveXObject("Msxml2.XMLHTTP"); }
                catch (e) {
                        try { this.xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); }
                        catch (e) { this.onError(); }
                }
        }
        this.src = hs.getSrc(this.a);
        if (this.src.match('#')) {
                var arr = this.src.split('#');
                this.src = arr[0];
                this.id = arr[1];
        }
        var pThis = this;
        this.xmlHttp.onreadystatechange = function() {
                if(pThis.xmlHttp.readyState == 4) {     
                        if (pThis.id) pThis.getElementContent();
                        else pThis.loadHTML();
                }
        };
        
        this.xmlHttp.open("GET", this.src, true);
        this.xmlHttp.send(null);
};

HsAjax.prototype.getElementContent = function() {
        hs.genContainer();
        var attribs = window.opera ? { src: this.src } : null; // Opera needs local src
        this.iframe = hs.createElement('iframe', attribs, 
                { position: 'absolute', left: '-9999px' }, hs.container);
                
        try {
                this.loadHTML();
        } catch (e) { // Opera security
                var pThis = this;
                setTimeout(function() { pThis.loadHTML(); }, 1);
        }
};

HsAjax.prototype.loadHTML = function() {
        var s = this.xmlHttp.responseText;
        if (!hs.ie || hs.ieVersion() >= 5.5) {
                s = s.replace(/\s/g, ' ');
                if (this.iframe) {
                        s = s.replace(new RegExp('<link[^>]*>', 'gi'), '');
                        s = s.replace(new RegExp('<script[^>]*>.*?</script>', 'gi'), '');
                        var doc = this.iframe.contentDocument || this.iframe.contentWindow.document;
                        doc.open();
                        doc.write(s);
                        doc.close();
                        try { s = doc.getElementById(this.id).innerHTML; } catch (e) {
                                try { s = this.iframe.document.getElementById(this.id).innerHTML; } catch (e) {} // opera
                        }
                        hs.container.removeChild(this.iframe);
                } else {
                        s = s.replace(new RegExp('^.*?<body[^>]*>(.*?)</body>.*?$', 'i'), '$1');
                }
                
        }
        hs.identifyContainer(this.content, 'highslide-body').innerHTML = s;
        this.onLoad();
};

hs.addEventListener(window, 'load', hs.preloadAjax);