/*
 * Function: WYMeditor.loadCss
 *      Loads a stylesheet in the document.
 *
 * Parameters:
 *      href - The CSS path.
 */
WYMeditor.loadCss = function(href) {
  $("<link rel='stylesheet' />").attr('href', href).appendTo($('head').get(0));
};

/********** DIALOGS **********/

WYMeditor.INIT_DIALOG = function(wym, selected, isIframe) {

  var selected = selected || wym.selected();
  var dialog = $("#"+wym._options.dialogId);
  var doc = $(dialog.find('iframe').contents());
  var dialogType = dialog.find('#wym_dialog_type').val();
  if (wym._selected_image) {
    var replaceable = $(wym._selected_image);
  } else {
    var replaceable = $(wym._doc.body).find('#' + wym._current_unique_stamp);
  }

  // focus first textarea or input type text element
  dialog.find('input[type=text], textarea').first().focus();

  // init close_dialog when user clicks on cancel button
  doc.find('body').addClass('wym_iframe_body').find('#cancel_button').add(dialog.find('.close_dialog')).click(function(e){
    wym.close_dialog(e, true);
  });

  // init close_dialog when user clicks on small x icon at the top of dialog
  $('.ui-dialog-titlebar .ui-dialog-titlebar-close').click(function(e){
    wym.close_dialog(e, true);
  });

    //pre-init functions
  if($.isFunction(wym._options.preInitDialog)) {
    wym._options.preInitDialog(wym, window);
  }

  $(wym._options.dialogLinkSelector).find(wym._options.submitSelector).click(function(e)
  {
    if ((sUrl = $(wym._options.hrefSelector).val()).length > 0)
    {
      if (replaceable.get(0) != null) {
        var link = $('<a></a>').attr({href:sUrl, title: $(wym._options.titleSelector).val()})
        if ((target = $(wym._options.targetSelector).val()) != null && target.length > 0) {
          link.attr('target', target);
        }

        // now grab what was selected in the editor and chuck it inside the link.
        if (!wym._selected_image)
        {
          // ensure some attributes are copied across to the new link.
          link.attr({'style': replaceable.attr('style'), 'class': replaceable.attr('class')});

          link.html(replaceable.html());
          replaceable.replaceWith($('<div/>').append(link).html());
        }
        else
        {
          if ((parent = replaceable.parent().get(0)) != null && parent.tagName.toUpperCase() == "A") {
            $(parent).attr({href: link.attr('href'), title: $(wym._options.titleSelector).val(), target: target});
          }
          else {
            replaceable.before(link);
            $(link).append(replaceable.get(0));
          }
        }
      }
      else {
        wym._exec(WYMeditor.CREATE_LINK, wym._current_unique_stamp);

        $("a[href=" + wym._current_unique_stamp + "]", wym._doc.body)
          .attr(WYMeditor.HREF, sUrl)
          .attr(WYMeditor.TITLE, $(wym._options.titleSelector).val())
          .attr(WYMeditor.TARGET, $(wym._options.targetSelector).val());
      }
    }
    // fire a click event on the dialogs close button
    wym.close_dialog(e);
  });

  //auto populate image fields if selected image
  if(wym._selected_image) {
    imgDialog = $(wym._options.dialogImageSelector);
    img = $(wym._selected_image);
    size = (
      (img.attr(WYMeditor.REL)
        || doc.find('#existing_image_size_area li.selected a').attr(WYMeditor.REL)
        || doc.find('#existing_image_size_area li.selected a').attr('rel')) || ""
    );
    src = img.attr(WYMeditor.SRC);
    if (size.length > 0) {
      src = src.replace('_' + size + '.', '.');
      doc.find('#existing_image_size_area li.selected').removeClass('selected');
      doc.find("#existing_image_size_area li a[href='#" + size + "']").parents('li:first').addClass('selected');
    }

    imgDialog.find(wym._options.srcSelector).val(src);
    imgDialog.find(wym._options.titleSelector).val(img.attr(WYMeditor.TITLE));
    imgDialog.find(wym._options.altSelector).val(img.attr(WYMeditor.ALT));
    imgDialog.find(wym._options.sizeSelector).val(size);

    (src = src.split('.')).pop();
    doc.find("#existing_image_area_content li img[src^='" + src + "']").parents('li:first').addClass('selected');
  }

  $(wym._options.dialogImageSelector).find(wym._options.submitSelector).click(function(e) {
    form = $(this.form);
    if ((url = form.find(wym._options.srcSelector).val()) != null && url.length > 0) {
      (image = $(wym._doc.createElement("IMG")))
        .attr(WYMeditor.SRC, url)
        .attr(WYMeditor.TITLE, form.find(wym._options.titleSelector).val())
        .attr(WYMeditor.ALT, form.find(wym._options.altSelector).val())
        .attr(WYMeditor.REL, form.find(wym._options.sizeSelector).val())
        .load(function(e){
          $(this).attr({
            'width': $(this).width()
            , 'height': $(this).height()
          });
        });

       // ensure we know where to put the image.
       if (replaceable == null) {
         replaceable = $(wym._doc.body).find("#" + wym._current_unique_stamp);
       }
       if (replaceable != null) {
         replaceable.after(image).remove();
       }

      // fire a click event on the dialogs close button
      wym.close_dialog(e);
    } else {
      // remove any save loader animations.
      $('iframe').contents().find('.save-loader').remove();
      // tell the user.
      alert("Please select an image to insert.");
    }
    e.preventDefault();
  });

  $(wym._options.dialogTableSelector).find(wym._options.submitSelector).click(function(e) {
    if((iRows = $(wym._options.rowsSelector).val()) > 0 && (iCols = $(wym._options.colsSelector).val()) > 0)
    {
      //create the table and the caption
      (table = wym._doc.createElement(WYMeditor.TABLE)).createCaption().innerHTML = $(wym._options.captionSelector).val();

      //create the rows and cells
      for(x=0; x<iRows; x++) {
        newRow = table.insertRow(x);
        for(y=0; y<iCols; y++) {
          newRow.insertCell(y);
        }
      }

     //append the table after the selected container
     var node = $(wym.findUp(wym.container(), WYMeditor.MAIN_CONTAINERS)).get(0);
     if(!node || !node.parentNode) $(wym._doc.body).append(table);
     else $(node).after(table);
    }
    // fire a click event on the dialogs close button
    wym.close_dialog(e);
  });

  $(wym._options.dialogPasteSelector).find(wym._options.submitSelector).click(function(e) {
    wym.paste($(wym._options.textSelector).val());

    wym.close_dialog(e);
  });

  $(wym._options.dialogPreviewSelector).find(wym._options.previewSelector).html(wym.xhtml());

  //post-init functions
  if($.isFunction(wym._options.postInitDialog)) {
    wym._options.postInitDialog(wym,window);
  }
};

WYMeditor.editor.prototype.close_dialog = function(e, cancelled) {
  if (cancelled)
  {
    // if replaceable exists, replace it with its own html contents.
    if ((span = $(this._doc.body).find('span#' + this._current_unique_stamp)).length > 0) {
      span.parent().html(span.parent().html().replace(new RegExp(["<span(.+?)", span.attr('id'), "(.+?)<\/span>"].join("")), span.html()));
    }
    // https://github.com/refinery/refinerycms/issues/888
    if (node = $(this._doc.body).find('#' + this._current_unique_stamp)) {
      node.attr("id", (node.attr('_id_before_replaceable') || ""));
      node.removeAttr("_id_before_replaceable");
    }

    if (this._undo_on_cancel == true) {
      this._exec("undo");
    }
    else if (this._redo_on_cancel == true) {
      this._exec("redo");
    }
  }

  if ($.browser.msie && parseInt($.browser.version) < 8)
  {
    this._iframe.contentWindow.focus();
  }

  $("#" + wym._options.dialogId).dialog("close").remove();

  // ensure links can't be navigated to.
  $(this._doc).find('a[href]').click(function(e){e.preventDefault();});

  if (e) {
    e.preventDefault();
  }
};

// from http://simonwillison.net/2006/Jan/20/escape/#p-6
RegExp.escape = function(text) {
  return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
};