// http://www.ncode.nl/
// Version: 1.0.1
// Converted to SMF use by m3talc0re (webtechnica.net)
//
// (c) 2007 nCode

NcodeImageResizer.IMAGE_ID_BASE = 'ncode_imageresizer_container_';
NcodeImageResizer.WARNING_ID_BASE = 'ncode_imageresizer_warning_';
NcodeImageResizer.scheduledResizes = [];

function NcodeImageResizer(id, img) {
this.id = id;
this.img = img;
this.originalWidth = 0;
this.originalHeight = 0;
this.warning = null;
this.warningTextNode = null;
this.originalWidth = img.originalWidth;
this.originalHeight = img.originalHeight;

img.id = NcodeImageResizer.IMAGE_ID_BASE+id;
}

NcodeImageResizer.executeOnload = function() {
var rss = NcodeImageResizer.scheduledResizes;
for(var i = 0; i  < rss.length; i++) {
NcodeImageResizer.createOn(rss[i], true);
}
}

NcodeImageResizer.schedule = function(img) {
if(NcodeImageResizer.scheduledResizes.length == 0) {
if(window.addEventListener) {
window.addEventListener('load', NcodeImageResizer.executeOnload, false);
} else if(window.attachEvent) {
window.attachEvent('onload', NcodeImageResizer.executeOnload);
}
}
NcodeImageResizer.scheduledResizes.push(img);
}

NcodeImageResizer.getNextId = function() {
var id = 1;
while(document.getElementById(NcodeImageResizer.IMAGE_ID_BASE+id) != null) {
id++;
}
return id;
}

NcodeImageResizer.createOnId = function(id) {
return NcodeImageResizer.createOn(document.getElementById(id));
}

NcodeImageResizer.createOn = function(img, isSchedule) {
if(typeof isSchedule == 'undefined') isSchedule = false;

if(!img || !img.tagName || img.tagName.toLowerCase() != 'img') {
alert(img+' is not an image ('+img.tagName.toLowerCase()+')');
}

if(img.width == 0 || img.height == 0) {
if(!isSchedule)
NcodeImageResizer.schedule(img);
return;
}

if(!img.originalWidth) img.originalWidth = img.width;
if(!img.originalHeight) img.originalHeight = img.height;

if((NcodeImageResizer.MAXWIDTH > 0 && img.originalWidth > NcodeImageResizer.MAXWIDTH) || (NcodeImageResizer.MAXHEIGHT > 0 && img.originalHeight > NcodeImageResizer.MAXHEIGHT)) {
var isRecovery = false; // if this is a recovery from QuickEdit, which only restores the HTML, not the OO structure
var newid, resizer;
if(img.id && img.id.indexOf(NcodeImageResizer.IMAGE_ID_BASE) == 0) {
newid = img.id.substr(NcodeImageResizer.IMAGE_ID_BASE.length);
if(document.getElementById(NcodeImageResizer.WARNING_ID_BASE+newid) != null) {
resizer = new NcodeImageResizer(newid, img);
isRecovery = true;
resizer.restoreImage();
}
} else {
newid = NcodeImageResizer.getNextId();
resizer = new NcodeImageResizer(newid, img);
}

if(isRecovery) {
resizer.reclaimWarning(newid);
} else {
resizer.createWarning();
}
resizer.scale();
}
}

NcodeImageResizer.prototype.restoreImage = function() {
newimg = document.createElement('IMG');
newimg.src = this.img.src;
this.img.width = newimg.width;
this.img.height = newimg.height;
}

NcodeImageResizer.prototype.reclaimWarning = function(id) {
this.warning = document.getElementById(NcodeImageResizer.WARNING_ID_BASE+id);
this.warningTextNode = this.warning.firstChild.firstChild.childNodes[1].firstChild;
this.warning.resize = this;

this.scale();
}

NcodeImageResizer.prototype.createWarning = function() {
var mtable = document.createElement('TABLE');
var mtbody = document.createElement('TBODY');
var mtr = document.createElement('TR');
var mtd1 = document.createElement('TD');
var mtd2 = document.createElement('TD');
var mimg = document.createElement('IMG');
var mtext = document.createTextNode('');

mimg.src = NcodeImageResizer.BBURL+'/icons/assist.gif';
mimg.width = 16;
mimg.height = 16;
mimg.alt = '';
mimg.border = 0;

mtd1.width = 20;
mtd1.className = 'td1';

mtd2.unselectable = 'on';
mtd2.className = 'td2';

mtable.className = 'ncode_imageresizer_warning';
mtable.textNode = mtext;
mtable.resize = this;
mtable.id = NcodeImageResizer.WARNING_ID_BASE+this.id;

mtd1.appendChild(mimg);
mtd2.appendChild(mtext);

mtr.appendChild(mtd1);
mtr.appendChild(mtd2);

mtbody.appendChild(mtr);

mtable.appendChild(mtbody);

this.img.parentNode.insertBefore(mtable, this.img);

this.warning = mtable;
this.warningTextNode = mtext;
}

NcodeImageResizer.prototype.setText = function(text) {
var newnode = document.createTextNode(text);
this.warningTextNode.parentNode.replaceChild(newnode, this.warningTextNode);
this.warningTextNode = newnode;
}

NcodeImageResizer.prototype.scale = function() {
this.img.height = this.originalHeight;
this.img.width = this.originalWidth;

if(NcodeImageResizer.MAXWIDTH > 0 && this.img.width > NcodeImageResizer.MAXWIDTH) {
this.img.height = (NcodeImageResizer.MAXWIDTH / this.img.width) * this.img.height;
this.img.width = NcodeImageResizer.MAXWIDTH;
}

if(NcodeImageResizer.MAXHEIGHT > 0 && this.img.height > NcodeImageResizer.MAXHEIGHT) {
this.img.width = (NcodeImageResizer.MAXHEIGHT / this.img.height) * this.img.width;
this.img.height = NcodeImageResizer.MAXHEIGHT;
}

this.warning.width = this.img.width;
this.warning.onclick = function() { return this.resize.unScale(); }

if(this.img.width < 450) {
this.setText(vbphrase['ncode_imageresizer_warning_small']);
} else if(this.img.fileSize && this.img.fileSize > 0) {
this.setText(vbphrase['ncode_imageresizer_warning_filesize'].replace('%1$s', this.originalWidth).replace('%2$s', this.originalHeight).replace('%3$s', Math.round(this.img.fileSize/1024)));
} else {
this.setText(vbphrase['ncode_imageresizer_warning_no_filesize'].replace('%1$s', this.originalWidth).replace('%2$s', this.originalHeight));
}

return false;
}

NcodeImageResizer.prototype.unScale = function() {
switch(NcodeImageResizer.MODE) {
case 'samewindow':
window.open(this.img.src, '_self');
break;
case 'newwindow':
window.open(this.img.src, '_blank');
break;
case 'enlarge':
default:
this.img.width = this.originalWidth;
this.img.height = this.originalHeight;
this.img.className = 'ncode_imageresizer_original';
if(this.warning != null) {
this.setText(vbphrase['ncode_imageresizer_warning_fullsize']);
this.warning.width = this.img.width;
this.warning.onclick = function() { return this.resize.scale() };
}
break;
}

return false;
}