--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/misc/ahah.js	Tue Dec 23 14:28:28 2008 +0100
@@ -0,0 +1,225 @@
+// $Id: ahah.js,v 1.7.2.1 2008/02/11 14:46:27 goba Exp $
+
+/**
+ * Provides AJAX-like page updating via AHAH (Asynchronous HTML and HTTP).
+ *
+ * AHAH is a method of making a request via Javascript while viewing an HTML
+ * page. The request returns a small chunk of HTML, which is then directly
+ * injected into the page.
+ *
+ * Drupal uses this file to enhance form elements with #ahah[path] and
+ * #ahah[wrapper] properties. If set, this file will automatically be included
+ * to provide AHAH capabilities.
+ */
+
+/**
+ * Attaches the ahah behavior to each ahah form element.
+ */
+Drupal.behaviors.ahah = function(context) {
+  for (var base in Drupal.settings.ahah) {
+    if (!$('#'+ base + '.ahah-processed').size()) {
+      var element_settings = Drupal.settings.ahah[base];
+
+      $(element_settings.selector).each(function() {
+        element_settings.element = this;
+        var ahah = new Drupal.ahah(base, element_settings);
+      });
+
+      $('#'+ base).addClass('ahah-processed');
+    }
+  }
+};
+
+/**
+ * AHAH object.
+ */
+Drupal.ahah = function(base, element_settings) {
+  // Set the properties for this object.
+  this.element = element_settings.element;
+  this.selector = element_settings.selector;
+  this.event = element_settings.event;
+  this.keypress = element_settings.keypress;
+  this.url = element_settings.url;
+  this.wrapper = '#'+ element_settings.wrapper;
+  this.effect = element_settings.effect;
+  this.method = element_settings.method;
+  this.progress = element_settings.progress;
+  this.button = element_settings.button || { };
+
+  if (this.effect == 'none') {
+    this.showEffect = 'show';
+    this.hideEffect = 'hide';
+    this.showSpeed = '';
+  }
+  else if (this.effect == 'fade') {
+    this.showEffect = 'fadeIn';
+    this.hideEffect = 'fadeOut';
+    this.showSpeed = 'slow';
+  }
+  else {
+    this.showEffect = this.effect + 'Toggle';
+    this.hideEffect = this.effect + 'Toggle';
+    this.showSpeed = 'slow';
+  }
+
+  // Record the form action and target, needed for iFrame file uploads.
+  var form = $(this.element).parents('form');
+  this.form_action = form.attr('action');
+  this.form_target = form.attr('target');
+  this.form_encattr = form.attr('encattr');
+
+  // Set the options for the ajaxSubmit function.
+  // The 'this' variable will not persist inside of the options object.
+  var ahah = this;
+  var options = {
+    url: ahah.url,
+    data: ahah.button,
+    beforeSubmit: function(form_values, element_settings, options) {
+      return ahah.beforeSubmit(form_values, element_settings, options);
+    },
+    success: function(response, status) {
+      // Sanity check for browser support (object expected).
+      // When using iFrame uploads, responses must be returned as a string.
+      if (typeof(response) == 'string') {
+        response = Drupal.parseJson(response);
+      }
+      return ahah.success(response, status);
+    },
+    complete: function(response, status) {
+      if (status == 'error' || status == 'parsererror') {
+        return ahah.error(response, ahah.url);
+      }
+    },
+    dataType: 'json',
+    type: 'POST'
+  };
+
+  // Bind the ajaxSubmit function to the element event.
+  $(element_settings.element).bind(element_settings.event, function() {
+    $(element_settings.element).parents('form').ajaxSubmit(options);
+    return false;
+  });
+  // If necessary, enable keyboard submission so that AHAH behaviors
+  // can be triggered through keyboard input as well as e.g. a mousedown
+  // action.
+  if (element_settings.keypress) {
+    $(element_settings.element).keypress(function(event) {
+      // Detect enter key.
+      if (event.keyCode == 13) {
+        $(element_settings.element).trigger(element_settings.event);
+        return false;
+      }
+    });
+  }
+};
+
+/**
+ * Handler for the form redirection submission.
+ */
+Drupal.ahah.prototype.beforeSubmit = function (form_values, element, options) {
+  // Disable the element that received the change.
+  $(this.element).addClass('progress-disabled').attr('disabled', true);
+
+  // Insert progressbar or throbber.
+  if (this.progress.type == 'bar') {
+    var progressBar = new Drupal.progressBar('ahah-progress-' + this.element.id, eval(this.progress.update_callback), this.progress.method, eval(this.progress.error_callback));
+    if (this.progress.message) {
+      progressBar.setProgress(-1, this.progress.message);
+    }
+    if (this.progress.url) {
+      progressBar.startMonitoring(this.progress.url, this.progress.interval || 1500);
+    }
+    this.progress.element = $(progressBar.element).addClass('ahah-progress ahah-progress-bar');
+    this.progress.object = progressBar;
+    $(this.element).after(this.progress.element);
+  }
+  else if (this.progress.type == 'throbber') {
+    this.progress.element = $('<div class="ahah-progress ahah-progress-throbber"><div class="throbber">&nbsp;</div></div>');
+    if (this.progress.message) {
+      $('.throbber', this.progress.element).after('<div class="message">' + this.progress.message + '</div>')
+    }
+    $(this.element).after(this.progress.element);
+  }
+};
+
+/**
+ * Handler for the form redirection completion.
+ */
+Drupal.ahah.prototype.success = function (response, status) {
+  var wrapper = $(this.wrapper);
+  var form = $(this.element).parents('form');
+  // Manually insert HTML into the jQuery object, using $() directly crashes
+  // Safari with long string lengths. http://dev.jquery.com/ticket/1152
+  var new_content = $('<div></div>').html(response.data);
+
+  // Restore the previous action and target to the form.
+  form.attr('action', this.form_action);
+  this.form_target ? form.attr('target', this.form_target) : form.removeAttr('target');
+  this.form_encattr ? form.attr('target', this.form_encattr) : form.removeAttr('encattr');
+
+  // Remove the progress element.
+  if (this.progress.element) {
+    $(this.progress.element).remove();
+  }
+  if (this.progress.object) {
+    this.progress.object.stopMonitoring();
+  }
+  $(this.element).removeClass('progress-disabled').attr('disabled', false);
+
+  // Add the new content to the page.
+  Drupal.freezeHeight();
+  if (this.method == 'replace') {
+    wrapper.empty().append(new_content);
+  }
+  else {
+    wrapper[this.method](new_content);
+  }
+
+  // Immediately hide the new content if we're using any effects.
+  if (this.showEffect != 'show') {
+    new_content.hide();
+  }
+
+  // Determine what effect use and what content will receive the effect, then
+  // show the new content. For browser compatibility, Safari is excluded from
+  // using effects on table rows.
+  if (($.browser.safari && $("tr.ahah-new-content", new_content).size() > 0)) {
+    new_content.show();
+  }
+  else if ($('.ahah-new-content', new_content).size() > 0) {
+    $('.ahah-new-content', new_content).hide();
+    new_content.show();
+    $(".ahah-new-content", new_content)[this.showEffect](this.showSpeed);
+  }
+  else if (this.showEffect != 'show') {
+    new_content[this.showEffect](this.showSpeed);
+  }
+
+  // Attach all javascript behaviors to the new content, if it was successfully
+  // added to the page, this if statement allows #ahah[wrapper] to be optional.
+  if (new_content.parents('html').length > 0) {
+    Drupal.attachBehaviors(new_content);
+  }
+
+  Drupal.unfreezeHeight();
+};
+
+/**
+ * Handler for the form redirection error.
+ */
+Drupal.ahah.prototype.error = function (response, uri) {
+  alert(Drupal.ahahError(response, uri));
+  // Resore the previous action and target to the form.
+  $(this.element).parent('form').attr( { action: this.form_action, target: this.form_target} );
+  // Remove the progress element.
+  if (this.progress.element) {
+    $(this.progress.element).remove();
+  }
+  if (this.progress.object) {
+    this.progress.object.stopMonitoring();
+  }
+  // Undo hide.
+  $(this.wrapper).show();
+  // Re-enable the element.
+  $(this.element).removeClass('progess-disabled').attr('disabled', false);
+};