// nCode Image Resizer for vBulletin 3.6.0
// http://www.ncode.nl/vbulletinplugins/
// Version: 1.0.1
//
// (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 = '/wol_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.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(); }
  this.img.style.cursor = 'pointer';
  eval('this.img.onclick = function() { return document.getElementById(\'' + this.warning.id + '\').resize.unScale(); }');
  
  if(this.img.width < 450) {
    this.setText(phrase_ncode_imageresizer_warning_small);
  } else if(this.img.fileSize && this.img.fileSize > 0) {
    this.setText(phrase_ncode_imageresizer_warning_filesize.replace('%1$s', this.originalWidth).replace('%2$s', this.originalHeight).replace('%3$s', Math.round(this.img.fileSize/1024)));
  } else {
    this.setText(phrase_ncode_imageresizer_warning_no_filesize.replace('%1$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 'lightbox':
       showLightbox2(this.img.src);
       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(phrase_ncode_imageresizer_warning_fullsize);
        this.warning.width = this.img.width;
        this.warning.onclick = function() { return this.resize.scale() };
      }
      break;
  }
  
  return false;
}