// $Id: ajax-responder.js,v 1.18.2.6 2010/01/22 06:48:08 merlinofchaos Exp $

/**

 * @file

 *

 * CTools flexible AJAX responder object.

 */

(function ($) {

  Drupal.CTools = Drupal.CTools || {};

  Drupal.CTools.AJAX = Drupal.CTools.AJAX || {};

  Drupal.CTools.AJAX.commands = Drupal.CTools.AJAX.commands || {};

  /**

   * Success callback for an ajax request.

   *

   * This function expects to receive a packet of data from a JSON object

   * which is essentially a list of commands. Each commands must have a

   * 'command' setting and this setting must resolve to a function in the

   * Drupal.CTools.AJAX.commands space.

   */

  Drupal.CTools.AJAX.respond = function(data) {

    for (i in data) {

      if (data[i]['command'] && Drupal.CTools.AJAX.commands[data[i]['command']]) {

        Drupal.CTools.AJAX.commands[data[i]['command']](data[i]);

      }

    }

  };

  /**

   * Generic replacement click handler to open the modal with the destination

   * specified by the href of the link.

   */

  Drupal.CTools.AJAX.clickAJAXLink = function() {

    if ($(this).hasClass('ctools-ajaxing')) {

      return false;

    }

    var url = $(this).attr('href');

    var object = $(this);

    $(this).addClass('ctools-ajaxing');

    try {

      url = url.replace(/nojs/g, 'ajax');

      $.ajax({

        type: "POST",

        url: url,

        data: { 'js': 1, 'ctools_ajax': 1 },

        global: true,

        success: Drupal.CTools.AJAX.respond,

        error: function(xhr) {

          Drupal.CTools.AJAX.handleErrors(xhr, url);

        },

        complete: function() {

          object.removeClass('ctools-ajaxing');

        },

        dataType: 'json'

      });

    }

    catch (err) {

      alert("An error occurred while attempting to process " + url);

      $(this).removeClass('ctools-ajaxing');

      return false;

    }

    return false;

  };

  /**

   * Generic replacement click handler to open the modal with the destination

   * specified by the href of the link.

   */

  Drupal.CTools.AJAX.clickAJAXButton = function() {

    if ($(this).hasClass('ctools-ajaxing')) {

      return false;

    }

    // Put our button in.

    this.form.clk = this;

    var url = Drupal.CTools.AJAX.findURL(this);

    $(this).addClass('ctools-ajaxing');

    var object = $(this);

    try {

      if (url) {

        url = url.replace('/nojs/', '/ajax/');

        $.ajax({

          type: "POST",

          url: url,

          data: { 'js': 1, 'ctools_ajax': 1 },

          global: true,

          success: Drupal.CTools.AJAX.respond,

          error: function(xhr) {

            Drupal.CTools.AJAX.handleErrors(xhr, url);

          },

          complete: function() {

            object.removeClass('ctools-ajaxing');

          },

          dataType: 'json'

        });

      }

      else {

        var form = this.form;

        url = $(form).attr('action');

        url = url.replace('/nojs/', '/ajax/');

        $(form).ajaxSubmit({

          type: "POST",

          url: url,

          data: { 'js': 1, 'ctools_ajax': 1 },

          global: true,

          success: Drupal.CTools.AJAX.respond,

          error: function(xhr) {

            Drupal.CTools.AJAX.handleErrors(xhr, url);

          },

          complete: function() {

            object.removeClass('ctools-ajaxing');

          },

          dataType: 'json'

        });

      }

    }

    catch (err) {

      alert("An error occurred while attempting to process " + url);

      $(this).removeClass('ctools-ajaxing');

      return false;

    }

    return false;

  };

  /**

   * Display error in a more fashion way

   */

  Drupal.CTools.AJAX.handleErrors = function(xhr, path) {

    var error_text = '';

    if ((xhr.status == 500 && xhr.responseText) || xhr.status == 200) {

      error_text = xhr.responseText;

      // Replace all &lt; and &gt; by < and >

      error_text = error_text.replace("/&(lt|gt);/g", function (m, p) {

        return (p == "lt")? "<" : ">";

      });

      // Now, replace all html tags by empty spaces

      error_text = error_text.replace(/<("[^"]*"|'[^']*'|[^'">])*>/gi,"");

      // Fix end lines

      error_text = error_text.replace(/[\n]+\s+/g,"\n");

    }

    else if (xhr.status == 500) {

      error_text = xhr.status + ': ' + Drupal.t("Internal server error. Please see server or PHP logs for error information.");

    }

    else {

      error_text = xhr.status + ': ' + xhr.statusText;

    }

    alert(Drupal.t("An error occurred at @path.\n\nError Description: @error", {'@path': path, '@error': error_text}));

  }

  /**

   * Generic replacement for change handler to execute ajax method.

   */

  Drupal.CTools.AJAX.changeAJAX = function () {

    if ($(this).hasClass('ctools-ajaxing')) {

      return false;

    }

    var url = Drupal.CTools.AJAX.findURL(this);

    $(this).addClass('ctools-ajaxing');

    var object = $(this);

    var form_id = $(object).parents('form').get(0).id;

    try {

      if (url) {

        url = url.replace('/nojs/', '/ajax/');

        $.ajax({

          type: "POST",

          url: url,

          data: {'ctools_changed': $(this).val(), 'js': 1, 'ctools_ajax': 1 },

          global: true,

          success: Drupal.CTools.AJAX.respond,

          error: function(xhr) {

            Drupal.CTools.AJAX.handleErrors(xhr, url);

          },

          complete: function() {

            object.removeClass('ctools-ajaxing');

            if ($(object).hasClass('ctools-ajax-submit-onchange')) {

              $('form#' + form_id).submit();

            }

          },

          dataType: 'json'

        });

      }

      else {

        if ($(object).hasClass('ctools-ajax-submit-onchange')) {

          $('form#' + form_id).submit();

        }

        return false;

      }

    }

    catch (err) {

      alert("An error occurred while attempting to process " + url);

      $(this).removeClass('ctools-ajaxing');

      return false;

    }

    return false;

  };

  /**

   * Find a URL for an AJAX button.

   *

   * The URL for this gadget will be composed of the values of items by

   * taking the ID of this item and adding -url and looking for that

   * class. They need to be in the form in order since we will

   * concat them all together using '/'.

   */

  Drupal.CTools.AJAX.findURL = function(item) {

    var url = '';

    var url_class = '.' + $(item).attr('id') + '-url';

    $(url_class).each(

      function() {

        if (url && $(this).val()) {

          url += '/';

        }

        url += $(this).val();

      });

    return url;

  };

  Drupal.CTools.AJAX.commands.prepend = function(data) {

    $(data.selector).prepend(data.data);

    Drupal.attachBehaviors($(data.selector));

  };

  Drupal.CTools.AJAX.commands.append = function(data) {

    $(data.selector).append(data.data);

    Drupal.attachBehaviors($(data.selector));

  };

  Drupal.CTools.AJAX.commands.replace = function(data) {

    $(data.selector).replaceWith(data.data);

    Drupal.attachBehaviors($(data.selector));

  };

  Drupal.CTools.AJAX.commands.after = function(data) {

    var object = $(data.data);

    $(data.selector).after(object);

    Drupal.attachBehaviors(object);

  };

  Drupal.CTools.AJAX.commands.before = function(data) {

    var object = $(data.data);

    $(data.selector).before(object);

    Drupal.attachBehaviors(object);

  };

  Drupal.CTools.AJAX.commands.html = function(data) {

    $(data.selector).html(data.data);

    Drupal.attachBehaviors($(data.selector));

  };

  Drupal.CTools.AJAX.commands.remove = function(data) {

    $(data.selector).remove();

  };

  Drupal.CTools.AJAX.commands.changed = function(data) {

    if (!$(data.selector).hasClass('changed')) {

      $(data.selector).addClass('changed');

      if (data.star) {

        $(data.selector).find(data.star).append(' <span class="star">*</span> ');

      }

    }

  };

  Drupal.CTools.AJAX.commands.alert = function(data) {

    alert(data.text, data.title);

  };

  Drupal.CTools.AJAX.commands.css = function(data) {

  /*

    if (data.selector && data.selector.contains('* html ')) {

      // This indicates an IE hack and we should only do it if we are IE.

      if (!jQuery.browser.msie) {

        return;

      }

      data.selector = data.selector.replace('* html ', '');

    }

  */

    $(data.selector).css(data.argument);

  };

  Drupal.CTools.AJAX.commands.settings = function(data) {

    $.extend(Drupal.settings, data.argument);

  };

  Drupal.CTools.AJAX.commands.data = function(data) {

    $(data.selector).data(data.name, data.value);

  };

  Drupal.CTools.AJAX.commands.attr = function(data) {

    $(data.selector).attr(data.name, data.value);

  };

  Drupal.CTools.AJAX.commands.restripe = function(data) {

    // :even and :odd are reversed because jquery counts from 0 and

    // we count from 1, so we're out of sync.

    $('tbody tr:not(:hidden)', $(data.selector))

      .removeClass('even')

      .removeClass('odd')

      .filter(':even')

        .addClass('odd')

      .end()

      .filter(':odd')

        .addClass('even');

  };

  Drupal.CTools.AJAX.commands.redirect = function(data) {

    location.href = data.url;

  };

  Drupal.CTools.AJAX.commands.reload = function(data) {

    location.reload();

  };

  Drupal.CTools.AJAX.commands.submit = function(data) {

    $(data.selector).submit();

  }

  /**

   * Bind links that will open modals to the appropriate function.

   */

  Drupal.behaviors.CToolsAJAX = function(context) {

    // Bind links

    $('a.ctools-use-ajax:not(.ctools-use-ajax-processed)', context)

      .addClass('ctools-use-ajax-processed')

      .click(Drupal.CTools.AJAX.clickAJAXLink);

    // Bind buttons

    $('input.ctools-use-ajax:not(.ctools-use-ajax-processed), button.ctools-use-ajax:not(.ctools-use-ajax-processed)', context)

      .addClass('ctools-use-ajax-processed')

      .click(Drupal.CTools.AJAX.clickAJAXButton);

    // Bind select

    $('select, input:text, input:radio, input:checkbox', context)

       .filter('.ctools-use-ajax-onchange:not(.ctools-use-ajax-processed)')

       .addClass('ctools-use-ajax-processed')

       .change(Drupal.CTools.AJAX.changeAJAX);

  };

})(jQuery);