text: /**
   * A dialogue type designed to display an appropriate error when a generic
   * javascript error was thrown and caught.
   *
   * @module moodle-core-notification
   * @submodule moodle-core-notification-exception
   */
  
  var EXCEPTION_NAME = 'Moodle exception',
      EXCEPTION;
  
  /**
   * Extends core Dialogue to show the exception dialogue.
   *
   * @param {Object} config Object literal specifying the dialogue configuration properties.
   * @constructor
   * @class M.core.exception
   * @extends M.core.dialogue
   */
  EXCEPTION = function(c) {
      var config = Y.mix({}, c);
      config.width = config.width || (M.cfg.developerdebug) ? Math.floor(Y.one(document.body).get('winWidth') / 3) + 'px' : null;
      config.closeButton = true;
  
      // We need to allow some properties which are part of the exception
      // prototype, otherwise AttributeCore filters them during value normalisation.
      var allowlist = [
          'message',
          'name',
          'fileName',
          'lineNumber',
          'stack'
      ];
      Y.Array.each(allowlist, function(k) {
          config[k] = c[k];
      });
  
      EXCEPTION.superclass.constructor.apply(this, [config]);
  };
  Y.extend(EXCEPTION, M.core.notification.info, {
      _hideTimeout: null,
      _keypress: null,
      initializer: function(config) {
          var content,
              self = this,
              delay = this.get('hideTimeoutDelay'),
              labelsep = M.util.get_string('labelsep', 'langconfig');
          this.get(BASE).addClass('moodle-dialogue-exception');
          this.setStdModContent(Y.WidgetStdMod.HEADER,
                  '<h5 id="moodle-dialogue-' + this.get('COUNT') + '-wrap-header-text">' + Y.Escape.html(config.name) + '</h5>',
                  Y.WidgetStdMod.REPLACE);
          content = Y.Node.create('<div class="moodle-exception" data-rel="fatalerror"></div>')
                  .append(Y.Node.create('<div class="moodle-exception-message">' + Y.Escape.html(this.get('message')) + '</div>'))
                  .append(Y.Node.create('<div class="moodle-exception-param hidden param-filename"><label>' +
                          M.util.get_string('file', 'moodle') + labelsep + '</label> ' +
                          Y.Escape.html(this.get('fileName')) + '</div>'))
                  .append(Y.Node.create('<div class="moodle-exception-param hidden param-linenumber"><label>' +
                          M.util.get_string('line', 'debug') + labelsep + '</label> ' +
                          Y.Escape.html(this.get('lineNumber')) + '</div>'))
                  .append(Y.Node.create('<div class="moodle-exception-param hidden param-stacktrace"><label>' +
                          M.util.get_string('stacktrace', 'debug') + labelsep + '</label> <pre>' +
                          this.get('stack') + '</pre></div>'));
          if (M.cfg.developerdebug) {
              content.all('.moodle-exception-param').removeClass('hidden');
          }
          this.setStdModContent(Y.WidgetStdMod.BODY, content, Y.WidgetStdMod.REPLACE);
  
          if (delay) {
              this._hideTimeout = setTimeout(function() {
                  self.hide();
              }, delay);
          }
          this.after('visibleChange', this.visibilityChanged, this);
          this._keypress = Y.on('key', this.hide, window, 'down:13,27', this);
          this.centerDialogue();
      },
      visibilityChanged: function(e) {
          if (e.attrName === 'visible' && e.prevVal && !e.newVal) {
              if (this._keypress) {
                  this._keypress.detach();
              }
              var self = this;
              setTimeout(function() {
                  self.destroy();
              }, 1000);
          }
      }
  }, {
      NAME: EXCEPTION_NAME,
      CSS_PREFIX: DIALOGUE_PREFIX,
      ATTRS: {
          /**
           * The message of the alert.
           *
           * @attribute message
           * @type String
           * @default ''
           */
          message: {
              value: ''
          },
  
          /**
           * The name of the alert.
           *
           * @attribute title
           * @type String
           * @default ''
           */
          name: {
              value: ''
          },
  
          /**
           * The name of the file where the error was thrown.
           *
           * @attribute fileName
           * @type String
           * @default ''
           */
          fileName: {
              value: ''
          },
  
          /**
           * The line number where the error was thrown.
           *
           * @attribute lineNumber
           * @type String
           * @default ''
           */
          lineNumber: {
              value: ''
          },
  
          /**
           * The backtrace from the error
           *
           * @attribute lineNumber
           * @type String
           * @default ''
           */
          stack: {
              setter: function(str) {
                  var lines = Y.Escape.html(str).split("\n"),
                      pattern = new RegExp('^(.+)@(' + M.cfg.wwwroot + ')?(.{0,75}).*:(\\d+)$'),
                      i;
                  for (i in lines) {
                      lines[i] = lines[i].replace(pattern,
                              "<div class='stacktrace-line'>ln: $4</div>" +
                              "<div class='stacktrace-file'>$3</div>" +
                              "<div class='stacktrace-call'>$1</div>");
                  }
                  return lines.join("\n");
              },
              value: ''
          },
  
          /**
           * If set, the dialogue is hidden after the specified timeout period.
           *
           * @attribute hideTimeoutDelay
           * @type Number
           * @default null
           * @optional
           */
          hideTimeoutDelay: {
              validator: Y.Lang.isNumber,
              value: null
          }
      }
  });
  
  M.core.exception = EXCEPTION;
  