Club Drupal

(function($) {

//Global container.

window.imce = {tree: {}, findex: [], fids: {}, selected: {}, selcount: 0, ops: {}, cache: {}, urlId: {},

vars: {previewImages: 1, cache: 1},

hooks: {load: [], list: [], navigate: [], cache: []},

//initiate imce.

initiate: function() {

  imce.conf = Drupal.settings.imce || {};

  imce.ie = (navigator.userAgent.match(/msie (\d+)/i) || ['', 0])[1] * 1;

  if (imce.conf.error != false) return;

  imce.FLW = imce.el('file-list-wrapper'), imce.SBW = imce.el('sub-browse-wrapper');

  imce.NW = imce.el('navigation-wrapper'), imce.BW = imce.el('browse-wrapper');

  imce.PW = imce.el('preview-wrapper'), imce.FW = imce.el('forms-wrapper');

  imce.updateUI();

  imce.prepareMsgs();//process initial status messages

  imce.initiateTree();//build directory tree

  imce.hooks.list.unshift(imce.processRow);//set the default list-hook.

  imce.initiateList();//process file list

  imce.initiateOps();//prepare operation tabs

  imce.refreshOps();

  imce.invoke('load', window);//run functions set by external applications.

},

//process navigation tree

initiateTree: function() {

  $('#navigation-tree li').each(function(i) {

    var a = this.firstChild, txt = a.firstChild;

    txt && (txt.data = imce.decode(txt.data));

    var branch = imce.tree[a.title] = {'a': a, li: this, ul: this.lastChild.tagName == 'UL' ? this.lastChild : null};

    if (a.href) imce.dirClickable(branch);

    imce.dirCollapsible(branch);

  });

},

//Add a dir to the tree under parent

dirAdd: function(dir, parent, clickable) {

  if (imce.tree[dir]) return clickable ? imce.dirClickable(imce.tree[dir]) : imce.tree[dir];

  var parent = parent || imce.tree['.'];

  parent.ul = parent.ul ? parent.ul : parent.li.appendChild(imce.newEl('ul'));

  var branch = imce.dirCreate(dir, imce.decode(dir.substr(dir.lastIndexOf('/')+1)), clickable);

  parent.ul.appendChild(branch.li);

  return branch;

},

//create list item for navigation tree

dirCreate: function(dir, text, clickable) {

  if (imce.tree[dir]) return imce.tree[dir];

  var branch = imce.tree[dir] = {li: imce.newEl('li'), a: imce.newEl('a')};

  $(branch.a).addClass('folder').text(text).attr('title', dir).appendTo(branch.li);

  imce.dirCollapsible(branch);

  return clickable ? imce.dirClickable(branch) : branch;

},

//change currently active directory

dirActivate: function(dir) {

  if (dir != imce.conf.dir) {

    if (imce.tree[imce.conf.dir]){

      $(imce.tree[imce.conf.dir].a).removeClass('active');

    }

    $(imce.tree[dir].a).addClass('active');

    imce.conf.dir = dir;

  }

  return imce.tree[imce.conf.dir];

},

//make a dir accessible

dirClickable: function(branch) {

  if (branch.clkbl) return branch;

  $(branch.a).attr('href', '#').removeClass('disabled').click(function() {imce.navigate(this.title); return false;});

  branch.clkbl = true;

  return branch;

},

//sub-directories expand-collapse ability

dirCollapsible: function (branch) {

  if (branch.clpsbl) return branch;

  $(imce.newEl('span')).addClass('expander').html(' ').click(function() {

    if (branch.ul) {

      $(branch.ul).toggle();

      $(branch.li).toggleClass('expanded');

      imce.ie && $('#navigation-header').css('top', imce.NW.scrollTop);

    }

    else if (branch.clkbl){

      $(branch.a).click();

    }

  }).prependTo(branch.li);

  branch.clpsbl = true;

  return branch;

},

//update navigation tree after getting subdirectories.

dirSubdirs: function(dir, subdirs) {

  var branch = imce.tree[dir];

  if (subdirs && subdirs.length) {

    var prefix = dir == '.' ? '' : dir +'/';

    for (var i in subdirs) {//add subdirectories

      imce.dirAdd(prefix + subdirs[i], branch, true);

    }

    $(branch.li).removeClass('leaf').addClass('expanded');

    $(branch.ul).show();

  }

  else if (!branch.ul){//no subdirs->leaf

    $(branch.li).removeClass('expanded').addClass('leaf');

  }

},

//process file list

initiateList: function(cached) {

  var L = imce.hooks.list, dir = imce.conf.dir, token = {'%dir':  dir == '.' ? $(imce.tree['.'].a).text() : imce.decode(dir)}

  imce.findex = [], imce.fids = {}, imce.selected = {}, imce.selcount = 0, imce.vars.lastfid = null;

  imce.tbody = imce.el('file-list').tBodies[0];

  if (imce.tbody.rows.length) {

    for (var row, i = 0; row = imce.tbody.rows[i]; i++) {

      var fid = row.id;

      imce.findex[i] = imce.fids[fid] = row;

      if (cached) {

        if (imce.hasC(row, 'selected')) {

          imce.selected[imce.vars.lastfid = fid] = row;

          imce.selcount++;

        }

      }

      else {

        for (var func, j = 0; func = L[j]; j++) func(row);//invoke list-hook

      }

    }

  }

  if (!imce.conf.perm.browse) {

    imce.setMessage(Drupal.t('File browsing is disabled in directory %dir.', token), 'error');

  }

},

//add a file to the list. (having properties name,size,formatted size,width,height,date,formatted date)

fileAdd: function(file) {

  var row, fid = file.name, i = imce.findex.length, attr = ['name', 'size', 'width', 'height', 'date'];

  if (!(row = imce.fids[fid])) {

    row = imce.findex[i] = imce.fids[fid] = imce.tbody.insertRow(i);

    for (var i in attr) row.insertCell(i).className = attr[i];

  }

  row.cells[0].innerHTML = row.id = fid;

  row.cells[1].innerHTML = file.fsize; row.cells[1].id = file.size;

  row.cells[2].innerHTML = file.width;

  row.cells[3].innerHTML = file.height;

  row.cells[4].innerHTML = file.fdate; row.cells[4].id = file.date;

  imce.invoke('list', row);

  if (imce.vars.prvfid == fid) imce.setPreview(fid);

  if (file.id) imce.urlId[imce.getURL(fid)] = file.id;

},

//remove a file from the list

fileRemove: function(fid) {

  if (!(row = imce.fids[fid])) return;

  imce.fileDeSelect(fid);

  imce.findex.splice(row.rowIndex, 1);

  $(row).remove();

  delete imce.fids[fid];

  if (imce.vars.prvfid == fid) imce.setPreview();

},

//return a file object containing all properties.

fileGet: function (fid) {

  var row = imce.fids[fid];

  var url = imce.getURL(fid);

  return row ? {

    name: imce.decode(fid),

    url: url,

    size: row.cells[1].innerHTML,

    bytes: row.cells[1].id * 1,

    width: row.cells[2].innerHTML * 1,

    height: row.cells[3].innerHTML * 1,

    date: row.cells[4].innerHTML,

    time: row.cells[4].id * 1,

    id: imce.urlId[url] || 0, //file id for newly uploaded files

    relpath: (imce.conf.dir == '.' ? '' : imce.conf.dir +'/') + fid //rawurlencoded path relative to file directory path.

  } : null;

},

//simulate row click. selection-highlighting

fileClick: function(row, ctrl, shft) {

  if (!row) return;

  var fid = typeof(row) == 'string' ? row : row.id;

  if (ctrl || fid == imce.vars.prvfid) {

    imce.fileToggleSelect(fid);

  }

  else if (shft) {

    var last = imce.lastFid();

    var start = last ? imce.fids[last].rowIndex : -1;

    var end = imce.fids[fid].rowIndex;

    var step = start > end ? -1 : 1;

    while (start != end) {

      start += step;

      imce.fileSelect(imce.findex[start].id);

    }

  }

  else {

    for (var fname in imce.selected) {

      imce.fileDeSelect(fname);

    }

    imce.fileSelect(fid);

  }

  //set preview

  imce.setPreview(imce.selcount == 1 ? imce.lastFid() : null);

},

//file select/deselect functions

fileSelect: function (fid) {

  if (imce.selected[fid] || !imce.fids[fid]) return;

  imce.selected[fid] = imce.fids[imce.vars.lastfid=fid];

  $(imce.selected[fid]).addClass('selected');

  imce.selcount++;

},

fileDeSelect: function (fid) {

  if (!imce.selected[fid] || !imce.fids[fid]) return;

  if (imce.vars.lastfid == fid) imce.vars.lastfid = null;

  $(imce.selected[fid]).removeClass('selected');

  delete imce.selected[fid];

  imce.selcount--;

},

fileToggleSelect: function (fid) {

  imce['file'+ (imce.selected[fid] ? 'De' : '') +'Select'](fid);

},

//process file operation form and create operation tabs.

initiateOps: function() {

  imce.setHtmlOps();

  imce.setUploadOp();//upload

  imce.setFileOps();//thumb, delete, resize

},

//process existing html ops.

setHtmlOps: function () {

  $(imce.el('ops-list')).children('li').each(function() {

    if (!this.firstChild) return $(this).remove();

    var name = this.id.substr(8);

    var Op = imce.ops[name] = {div: imce.el('op-content-'+ name), li: imce.el('op-item-'+ name)};

    Op.a = Op.li.firstChild;

    Op.title = Op.a.innerHTML;

    $(Op.a).click(function() {imce.opClick(name); return false;});

  });

},

//convert upload form to an op.

setUploadOp: function () {

  var form = imce.el('imce-upload-form');

  if (!form) return;

  $(form).ajaxForm(imce.uploadSettings()).find('fieldset').each(function() {//clean up fieldsets

    this.removeChild(this.firstChild);

    $(this).after(this.childNodes);

  }).remove();

  imce.opAdd({name: 'upload', title: Drupal.t('Upload'), content: form});//add op

},

//convert fileop form submit buttons to ops.

setFileOps: function () {

  var form = imce.el('imce-fileop-form');

  if (!form) return;

  $(form.elements.filenames).parent().remove();

  $(form).find('fieldset').each(function() {//remove fieldsets

    var $sbmt = $('input:submit', this);

    if (!$sbmt.size()) return;

    var Op = {name: $sbmt.attr('id').substr(5)};

    var func = function() {imce.fopSubmit(Op.name); return false;};

    $sbmt.click(func);

    Op.title = $(this).children('legend').remove().text() || $sbmt.val();

    Op.name == 'delete' ? (Op.func = func) : (Op.content = this.childNodes);

    imce.opAdd(Op);

  }).remove();

  imce.vars.opform = $(form).serialize();//serialize remaining parts.

},

//refresh ops states. enable/disable

refreshOps: function() {

  for (var p in imce.conf.perm) {

    if (imce.conf.perm[p]) imce.opEnable(p);

    else imce.opDisable(p);

  }

},

//add a new file operation

opAdd: function (op) {

  var oplist = imce.el('ops-list'), opcons = imce.el('op-contents');

  var name = op.name || ('op-'+ $(oplist).children('li').size());

  var title = op.title || 'Untitled';

  var Op = imce.ops[name] = {title: title};

  if (op.content) {

    Op.div = imce.newEl('div');

    $(Op.div).attr({id: 'op-content-'+ name, 'class': 'op-content'}).appendTo(opcons).append(op.content);

  }

  Op.a = imce.newEl('a');

  Op.li = imce.newEl('li');

  $(Op.a).attr({href: '#', name: name, title: title}).html('<span>' + title +'</span>').click(imce.opClickEvent);

  $(Op.li).attr('id', 'op-item-'+ name).append(Op.a).appendTo(oplist);

  Op.func = op.func || imce.opVoid;

  return Op;

},

//click event for file operations

opClickEvent: function(e) {

  imce.opClick(this.name);

  return false;

},

//void operation function

opVoid: function() {},

//perform op click

opClick: function(name) {

  var Op = imce.ops[name], oldop = imce.vars.op;

  if (!Op || Op.disabled) {

    return imce.setMessage(Drupal.t('You can not perform this operation.'), 'error');

  }

  if (Op.div) {

    if (oldop) {

      var toggle = oldop == name;

      imce.opShrink(oldop, toggle ? 'fadeOut' : 'hide');

      if (toggle) return false;

    }

    var left = Op.li.offsetLeft;

    var $opcon = $('#op-contents').css({left: 0});

    $(Op.div).fadeIn('normal', function() {

      setTimeout(function() {

        if (imce.vars.op) {

          var $inputs = $('input', imce.ops[imce.vars.op].div);

          $inputs.eq(0).focus();

          //form inputs become invisible in IE. Solution is as stupid as the behavior.

          $('html').is('.ie') && $inputs.addClass('dummyie').removeClass('dummyie');

       }

      });

    });

    var diff = left + $opcon.width() - $('#imce-content').width();

    $opcon.css({left: diff > 0 ? left - diff - 1 : left});

    $(Op.li).addClass('active');

    $(imce.opCloseLink).fadeIn(300);

    imce.vars.op = name;

  }

  Op.func(true);

  return true;

},

//enable a file operation

opEnable: function(name) {

  var Op = imce.ops[name];

  if (Op && Op.disabled) {

    Op.disabled = false;

    $(Op.li).show();

  }

},

//disable a file operation

opDisable: function(name) {

  var Op = imce.ops[name];

  if (Op && !Op.disabled) {

    Op.div && imce.opShrink(name);

    $(Op.li).hide();

    Op.disabled = true;

  }

},

//hide contents of a file operation

opShrink: function(name, effect) {

  if (imce.vars.op != name) return;

  var Op = imce.ops[name];

  $(Op.div).stop(true, true)[effect || 'hide']();

  $(Op.li).removeClass('active');

  $(imce.opCloseLink).hide();

  Op.func(false);

  imce.vars.op = null;

},

//navigate to dir

navigate: function(dir) {

  if (imce.vars.navbusy || (dir == imce.conf.dir && !confirm(Drupal.t('Do you want to refresh the current directory?')))) return;

  var cache = imce.vars.cache && dir != imce.conf.dir;

  var set = imce.navSet(dir, cache);

  if (cache && imce.cache[dir]) {//load from the cache

    set.success({data: imce.cache[dir]});

    set.complete();

  }

  else $.ajax(set);//live load

},

//ajax navigation settings

navSet: function (dir, cache) {

  $(imce.tree[dir].li).addClass('loading');

  imce.vars.navbusy = dir;

  return {url: imce.ajaxURL('navigate', dir),

  type: 'GET',

  dataType: 'json',

  success: function(response) {

    if (response.data && !response.data.error) {

      if (cache) imce.navCache(imce.conf.dir, dir);//cache the current dir

      imce.navUpdate(response.data, dir);

    }

    imce.processResponse(response);

  },

  complete: function () {

    $(imce.tree[dir].li).removeClass('loading');

    imce.vars.navbusy = null;

  }

  };

},

//update directory using the given data

navUpdate: function(data, dir) {

  var cached = data == imce.cache[dir], olddir = imce.conf.dir;

  if (cached) data.files.id = 'file-list';

  $(imce.FLW).html(data.files);

  imce.dirActivate(dir);

  imce.dirSubdirs(dir, data.subdirectories);

  $.extend(imce.conf.perm, data.perm);

  imce.refreshOps();

  imce.initiateList(cached);

  imce.setPreview(imce.selcount == 1 ? imce.lastFid() : null);

  imce.SBW.scrollTop = 0;

  imce.invoke('navigate', data, olddir, cached);

},

//set cache

navCache: function (dir, newdir) {

  var C = imce.cache[dir] = {'dir': dir, files: imce.el('file-list'), dirsize: imce.el('dir-size').innerHTML, perm: $.extend({}, imce.conf.perm)};

  C.files.id = 'cached-list-'+ dir;

  imce.FW.appendChild(C.files);

  imce.invoke('cache', C, newdir);

},

//validate upload form

uploadValidate: function (data, form, options) {

  var path = $('#edit-imce').val();

  if (!path) return false;

  if (imce.conf.extensions != '*') {

    var ext = path.substr(path.lastIndexOf('.') + 1);

    if ((' '+ imce.conf.extensions +' ').indexOf(' '+ ext.toLowerCase() +' ') == -1) {

      return imce.setMessage(Drupal.t('Only files with the following extensions are allowed: %files-allowed.', {'%files-allowed': imce.conf.extensions}), 'error');

    }

  }

  options.url = imce.ajaxURL('upload');//make url contain current dir.

  imce.fopLoading('upload', true);

  return true;

},

//settings for upload

uploadSettings: function () {

  return {beforeSubmit: imce.uploadValidate, success: function (response) {imce.processResponse($.parseJSON(response));}, complete: function () {imce.fopLoading('upload', false);}, resetForm: true};

},

//validate default ops(delete, thumb, resize)

fopValidate: function(fop) {

  if (!imce.validateSelCount(1, imce.conf.filenum)) return false;

  switch (fop) {

    case 'delete':

      return confirm(Drupal.t('Delete selected files?'));

    case 'thumb':

      if (!$('input:checked', imce.ops['thumb'].div).size()) {

        return imce.setMessage(Drupal.t('Please select a thumbnail.'), 'error');

      }

      return imce.validateImage();

    case 'resize':

      var w = imce.el('edit-width').value, h = imce.el('edit-height').value;

      var maxDim = imce.conf.dimensions.split('x');

      var maxW = maxDim[0]*1, maxH = maxW ? maxDim[1]*1 : 0;

      if (!(/^[1-9][0-9]*$/).test(w) || !(/^[1-9][0-9]*$/).test(h) || (maxW && (maxW < w*1 || maxH < h*1))) {

        return imce.setMessage(Drupal.t('Please specify dimensions within the allowed range that is from 1x1 to @dimensions.', {'@dimensions': maxW ? imce.conf.dimensions : Drupal.t('unlimited')}), 'error');

      }

      return imce.validateImage();

  }

  var func = fop +'OpValidate';

  if (imce[func]) return imce[func](fop);

  return true;

},

//submit wrapper for default ops

fopSubmit: function(fop) {

  switch (fop) {

    case 'thumb': case 'delete': case 'resize':  return imce.commonSubmit(fop);

  }

  var func = fop +'OpSubmit';

  if (imce[func]) return imce[func](fop);

},

//common submit function shared by default ops

commonSubmit: function(fop) {

  if (!imce.fopValidate(fop)) return false;

  imce.fopLoading(fop, true);

  $.ajax(imce.fopSettings(fop));

},

//settings for default file operations

fopSettings: function (fop) {

  return {url: imce.ajaxURL(fop), type: 'POST', dataType: 'json', success: imce.processResponse, complete: function (response) {imce.fopLoading(fop, false);}, data: imce.vars.opform +'&filenames='+ escape(imce.serialNames()) +'&jsop='+ fop + (imce.ops[fop].div ? '&'+ $('input, select, textarea', imce.ops[fop].div).serialize() : '')};

},

//toggle loading state

fopLoading: function(fop, state) {

  var el = imce.el('edit-'+ fop), func = state ? 'addClass' : 'removeClass';

  if (el) {

    $(el)[func]('loading').attr('disabled', state);

  }

  else {

    $(imce.ops[fop].li)[func]('loading');

    imce.ops[fop].disabled = state;

  }

},

//preview a file.

setPreview: function (fid) {

  var row, html = '';

  imce.vars.prvfid = fid;

  if (fid && (row = imce.fids[fid])) {

    var width = row.cells[2].innerHTML * 1;

    html = imce.vars.previewImages && width ? imce.imgHtml(fid, width, row.cells[3].innerHTML) : imce.decodePlain(fid);

    html = '<a href="#" onclick="imce.send(\''+ fid +'\'); return false;" title="'+ (imce.vars.prvtitle||'') +'">'+ html +'</a>';

  }

  imce.el('file-preview').innerHTML = html;

},

//default file send function. sends the file to the new window.

send: function (fid) {

  fid && window.open(imce.getURL(fid));

},

//add an operation for an external application to which the files are send.

setSendTo: function (title, func) {

  imce.send = function (fid) { fid && func(imce.fileGet(fid), window);};

  var opFunc = function () {

    if (imce.selcount != 1) return imce.setMessage(Drupal.t('Please select a file.'), 'error');

    imce.send(imce.vars.prvfid);

  };

  imce.vars.prvtitle = title;

  return imce.opAdd({name: 'sendto', title: title, func: opFunc});

},

//move initial page messages into log

prepareMsgs: function () {

  var msgs;

  if (msgs = imce.el('imce-messages')) {

    $('>div', msgs).each(function (){

      var type = this.className.split(' ')[1];

      var li = $('>ul li', this);

      if (li.size()) li.each(function () {imce.setMessage(this.innerHTML, type);});

      else imce.setMessage(this.innerHTML, type);

    });

    $(msgs).remove();

  }

},

//insert log message

setMessage: function (msg, type) {

  var $box = $(imce.msgBox);

  var logs = imce.el('log-messages') || $(imce.newEl('div')).appendTo('#help-box-content').before('<h4>'+ Drupal.t('Log messages') +':</h4>').attr('id', 'log-messages')[0];

  var msg = '<div class="message '+ (type || 'status') +'">'+ msg +'</div>';

  $box.queue(function() {

    $box.css({opacity: 0, display: 'block'}).html(msg);

    $box.dequeue();

  });

  var q = $box.queue().length, t = imce.vars.msgT || 1000;

  q = q < 2 ? 1 : q < 3 ? 0.8 : q < 4 ? 0.7 : 0.4;//adjust speed with respect to queue length

  $box.fadeTo(600 * q, 1).fadeTo(t * q, 1).fadeOut(400 * q);

  $(logs).append(msg);

  return false;

},

//invoke hooks

invoke: function (hook) {

  var i, args, func, funcs;

  if ((funcs = imce.hooks[hook]) && funcs.length) {

    (args = $.makeArray(arguments)).shift();

    for (i = 0; func = funcs[i]; i++) func.apply(this, args);

  }

},

//process response

processResponse: function (response) {

  if (response.data) imce.resData(response.data);

  if (response.messages) imce.resMsgs(response.messages);

},

//process response data

resData: function (data) {

  var i, added, removed;

  if (added = data.added) {

    var cnt = imce.findex.length;

    for (i in added) {//add new files or update existing

      imce.fileAdd(added[i]);

    }

    if (added.length == 1) {//if it is a single file operation

      imce.highlight(added[0].name);//highlight

    }

    if (imce.findex.length != cnt) {//if new files added, scroll to bottom.

      $(imce.SBW).animate({scrollTop: imce.SBW.scrollHeight}).focus();

    }

  }

  if (removed = data.removed) for (i in removed) {

    imce.fileRemove(removed[i]);

  }

  imce.conf.dirsize = data.dirsize;

  imce.updateStat();

},

//set response messages

resMsgs: function (msgs) {

  for (var type in msgs) for (var i in msgs[type]) {

    imce.setMessage(msgs[type][i], type);

  }

},

//return img markup

imgHtml: function (fid, width, height) {

  return '<img src="'+ imce.getURL(fid) +'" width="'+ width +'" height="'+ height +'" alt="'+ imce.decodePlain(fid) +'">';

},

//check if the file is an image

isImage: function (fid) {

  return imce.fids[fid].cells[2].innerHTML * 1;

},

//find the first non-image in the selection

getNonImage: function (selected) {

  for (var fid in selected) {

    if (!imce.isImage(fid)) return fid;

  }

  return false;

},

//validate current selection for images

validateImage: function () {

  var nonImg = imce.getNonImage(imce.selected);

  return nonImg ? imce.setMessage(Drupal.t('%filename is not an image.', {'%filename': imce.decode(nonImg)}), 'error') : true;

},

//validate number of selected files

validateSelCount: function (Min, Max) {

  if (Min && imce.selcount < Min) {

    return imce.setMessage(Min == 1 ? Drupal.t('Please select a file.') : Drupal.t('You must select at least %num files.', {'%num': Min}), 'error');

  }

  if (Max && Max < imce.selcount) {

    return imce.setMessage(Drupal.t('You are not allowed to operate on more than %num files.', {'%num': Max}), 'error');

  }

  return true;

},

//update file count and dir size

updateStat: function () {

  imce.el('file-count').innerHTML = imce.findex.length;

  imce.el('dir-size').innerHTML = imce.conf.dirsize;

},

//serialize selected files. return fids with a colon between them

serialNames: function () {

  var str = '';

  for (var fid in imce.selected) {

    str += ':'+ fid;

  }

  return str.substr(1);

},

//get file url. re-encode & and # for mod rewrite

getURL: function (fid) {

  var path = (imce.conf.dir == '.' ? '' : imce.conf.dir +'/') + fid;

  return imce.conf.furl + (imce.conf.modfix ? path.replace(/%(23|26)/g, '%25$1') : path);

},

//el. by id

el: function (id) {

  return document.getElementById(id);

},

//find the latest selected fid

lastFid: function () {

  if (imce.vars.lastfid) return imce.vars.lastfid;

  for (var fid in imce.selected);

  return fid;

},

//create ajax url

ajaxURL: function (op, dir) {

  return imce.conf.url + (imce.conf.clean ? '?' :'&') +'jsop='+ op +'&dir='+ (dir||imce.conf.dir);

},

//fast class check

hasC: function (el, name) {

  return el.className && (' '+ el.className +' ').indexOf(' '+ name +' ') != -1;

},

//highlight a single file

highlight: function (fid) {

  if (imce.vars.prvfid) imce.fileClick(imce.vars.prvfid);

  imce.fileClick(fid);

},

//process a row

processRow: function (row) {

  row.cells[0].innerHTML = '<span>' + imce.decodePlain(row.id) + '</span>';

  row.onmousedown = function(e) {

    var e = e||window.event;

    imce.fileClick(this, e.ctrlKey, e.shiftKey);

    return !(e.ctrlKey || e.shiftKey);

  };

  row.ondblclick = function(e) {

    imce.send(this.id);

    return false;

  };

},

//decode urls. uses unescape. can be overridden to use decodeURIComponent

decode: function (str) {

  return unescape(str);

},

//decode and convert to plain text

decodePlain: function (str) {

  return Drupal.checkPlain(imce.decode(str));

},

//global ajax error function

ajaxError: function (e, response, settings, thrown) {

  imce.setMessage(Drupal.ajaxError(response, settings.url).replace(/\n/g, '<br />'), 'error');

},

//convert button elements to standard input buttons

convertButtons: function(form) {

  $('button:submit', form).each(function(){

    $(this).replaceWith('<input type="submit" value="'+ $(this).text() +'" name="'+ this.name +'" class="form-submit" id="'+ this.id +'" />');

  });

},

//create element

newEl: function(name) {

  return document.createElement(name);

},

//scroll syncronization for section headers

syncScroll: function(scrlEl, fixEl, bottom) {

  var $fixEl = $(fixEl);

  var prop = bottom ? 'bottom' : 'top';

  var factor = bottom ? -1 : 1;

  var syncScrl = function(el) {

    $fixEl.css(prop, factor * el.scrollTop);

  }

  $(scrlEl).scroll(function() {

    var el = this;

    syncScrl(el);

    setTimeout(function() {

      syncScrl(el);

    });

  });

},

//get UI ready. provide backward compatibility.

updateUI: function() {

  //file urls.

  var furl = imce.conf.furl, isabs = furl.indexOf('://') > -1;

  var absurls = imce.conf.absurls = imce.vars.absurls || imce.conf.absurls;

  var host = location.host;

  var baseurl = location.protocol + '//' + host;

  if (furl.charAt(furl.length - 1) != '/') {

    furl = imce.conf.furl = furl + '/';

  }

  imce.conf.modfix = imce.conf.clean && furl.indexOf(host + '/system/') > -1;

  if (absurls && !isabs) {

    imce.conf.furl = baseurl + furl;

  }

  else if (!absurls && isabs && furl.indexOf(baseurl) == 0) {

    imce.conf.furl = furl.substr(baseurl.length);

  }

  //convert button elements to input elements.

  imce.convertButtons(imce.FW);

  //ops-list

  $('#ops-list').removeClass('tabs secondary').addClass('clear-block clearfix');

  imce.opCloseLink = $(imce.newEl('a')).attr({id: 'op-close-link', href: '#', title: Drupal.t('Close')}).click(function() {

    imce.vars.op && imce.opClick(imce.vars.op);

    return false;

  }).appendTo('#op-contents')[0];

  //navigation-header

  if (!$('#navigation-header').size()) {

    $(imce.NW).children('.navigation-text').attr('id', 'navigation-header').wrapInner('<span></span>');

  }

  //log

  $('#log-prv-wrapper').before($('#log-prv-wrapper > #preview-wrapper')).remove();

  $('#log-clearer').remove();

  //content resizer

  $('#content-resizer').remove();

  //message-box

  imce.msgBox = imce.el('message-box') || $(imce.newEl('div')).attr('id', 'message-box').prependTo('#imce-content')[0];

  //create help tab

  var $hbox = $('#help-box');

  $hbox.is('a') && $hbox.replaceWith($(imce.newEl('div')).attr('id', 'help-box').append($hbox.children()));

  imce.hooks.load.push(function() {

    imce.opAdd({name: 'help', title: $('#help-box-title').remove().text(), content: $('#help-box').show()});

  });

  //add ie classes

  imce.ie && $('html').addClass('ie') && imce.ie < 8 && $('html').addClass('ie-7');

  // enable box view for file list

  imce.vars.boxW && imce.boxView();

  //scrolling file list

  imce.syncScroll(imce.SBW, '#file-header-wrapper');

  imce.syncScroll(imce.SBW, '#dir-stat', true);

  //scrolling directory tree

  imce.syncScroll(imce.NW, '#navigation-header');

}

};

//initiate

$(document).ready(imce.initiate).ajaxError(imce.ajaxError);

})(jQuery);