NcodeImageResizer.IMAGE_ID_BASE = 'ncode_imageresizer_container_';

NcodeImageResizer.WARNING_ID_BASE = 'ncode_imageresizer_warning_';



function NcodeImageResizer(id, img) {

this.id = id;

this.img = img;

this.originalWidth = 0;

this.originalHeight = 0;

this.warning = null;

this.warningTextNode = null;



img.id = NcodeImageResizer.IMAGE_ID_BASE+id;

}



NcodeImageResizer.getNextId = function() {

id = 1;

while(document.getElementById(NcodeImageResizer.IMAGE_ID_BASE+id) != null) {

id++;

}

return id;

}



NcodeImageResizer.createOn = function(img) {

isRecovery = false; // if this is a recovery from QuickEdit, which only restores the HTML, not the OO structure

if(img.id && img.id.indexOf(NcodeImageResizer.IMAGE_ID_BASE) == 0 && document.getElementById(NcodeImageResizer.WARNING_ID_BASE+img.id.substr(NcodeImageResizer.IMAGE_ID_BASE.length)) != null) {

newid = img.id.substr(NcodeImageResizer.IMAGE_ID_BASE.length);

resizer = new NcodeImageResizer(newid, img);

isRecovery = true;

resizer.restoreImage();

} else {

newid = NcodeImageResizer.getNextId();

resizer = new NcodeImageResizer(id, img);

}



if (resizer.originalWidth == 0) resizer.originalWidth = img.width;

if (resizer.originalHeight == 0) resizer.originalHeight = img.height;



if((NcodeImageResizer.MAXWIDTH > 0 && resizer.originalWidth > NcodeImageResizer.MAXWIDTH) || (NcodeImageResizer.MAXHEIGHT > 0 && resizer.originalHeight > NcodeImageResizer.MAXHEIGHT)) {

if(isRecovery) {

resizer.reclaimWarning(warning);

} 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() {

warning = document.getElementById(NcodeImageResizer.WARNING_ID_BASE+newid);



this.warning = warning;

this.warningTextNode = warning.firstChild.firstChild.childNodes[1].firstChild;

this.warning.resize = this;



this.scale();

}



NcodeImageResizer.prototype.createWarning = function() {

mtable = document.createElement('TABLE');

mtbody = document.createElement('TBODY');

mtr = document.createElement('TR');

mtd1 = document.createElement('TD');

mtd2 = document.createElement('TD');

mimg = document.createElement('IMG');

mtext = document.createTextNode('');



mimg.src = 'pic/error.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.scale = function() {

if(NcodeImageResizer.MAXWIDTH > 0 && this.originalWidth > NcodeImageResizer.MAXWIDTH) {

resized = true;

this.img.width = NcodeImageResizer.MAXWIDTH;

this.img.height = (NcodeImageResizer.MAXWIDTH / this.originalWidth) * this.originalHeight;

}

if(NcodeImageResizer.MAXHEIGHT > 0 && this.originalHeight > NcodeImageResizer.MAXHEIGHT) {

resized = true;

this.img.height = NcodeImageResizer.MAXHEIGHT;

this.img.width = (NcodeImageResizer.MAXHEIGHT / this.originalHeight) * this.originalWidth;

}



this.warning.width = this.img.width;

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



if(this.img.width < 450) {

this.warningTextNode.data = NcodeImageResizer.Msg1;

} else if(this.img.fileSize && this.img.fileSize > 0) {

this.warningTextNode.data = NcodeImageResizer.Msg2.replace('%1$s', this.originalWidth).replace('%2$s', this.originalHeight).replace('%3$s', Math.round(this.img.fileSize/1024));

} else {

this.warningTextNode.data = NcodeImageResizer.Msg3.replace('%1$s', this.originalWidth).replace('%2$s', this.originalHeight);

}



return false;

}



NcodeImageResizer.prototype.unScale = function() {

switch(NcodeImageResizer.MODE) {

case 'none':

break;

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.warningTextNode.data = NcodeImageResizer.Msg4;

this.warning.width = this.img.width;

this.warning.onclick = function() { return this.resize.scale() };

}

break;

}



return false;

}