https://us.beruby.com/javascripts/jquery_ujs.js?1790168846

1(function($, undefined) {
2
3/**
4 * Unobtrusive scripting adapter for jQuery
5 *
6 * Requires jQuery 1.6.0 or later.
7 * https://github.com/rails/jquery-ujs
8
9 * Uploading file using rails.js
10 * =============================
11 *
12 * By default, browsers do not allow files to be uploaded via AJAX. As a result, if there are any non-blank file fields
13 * in the remote form, this adapter aborts the AJAX submission and allows the form to submit through standard means.
14 *
15 * The `ajax:aborted:file` event allows you to bind your own handler to process the form submission however you wish.
16 *
17 * Ex:
18 *     $('form').live('ajax:aborted:file', function(event, elements){
19 *       // Implement own remote file-transfer handler here for non-blank file inputs passed in `elements`.
20 *       // Returning false in this handler tells rails.js to disallow standard form submission
21 *       return false;
22 *     });
23 *
24 * The `ajax:aborted:file` event is fired when a file-type input is detected with a non-blank value.
25 *
26 * Third-party tools can use this hook to detect when an AJAX file upload is attempted, and then use
27 * techniques like the iframe method to upload the file instead.
28 *
29 * Required fields in rails.js
30 * ===========================
31 *
32 * If any blank required inputs (required="required") are detected in the remote form, the whole form submission
33 * is canceled. Note that this is unlike file inputs, which still allow standard (non-AJAX) form submission.
34 *
35 * The `ajax:aborted:required` event allows you to bind your own handler to inform the user of blank required inputs.
36 *
37 * !! Note that Opera does not fire the form's submit event if there are blank required inputs, so this event may never
38 *    get fired in Opera. This event is what causes other browsers to exhibit the same submit-aborting behavior.
39 *
40 * Ex:
41 *     $('form').live('ajax:aborted:required', function(event, elements){
42 *       // Returning false in this handler tells rails.js to submit the form anyway.
43 *       // The blank required inputs are passed to this function in `elements`.
44 *       return ! confirm("Would you like to submit the form with missing info?");
45 *     });
46 */
47
48  // Shorthand to make it a little easier to call public rails functions from within rails.js
49  var rails;
50
51  $.rails = rails = {
52    // Link elements bound by jquery-ujs
53    linkClickSelector: 'a[data-confirm], a[data-method], a[data-remote], a[data-disable-with]',
54
55    // Select elements bound by jquery-ujs
56    inputChangeSelector: 'select[data-remote], input[data-remote], textarea[data-remote]',
57
58    // Form elements bound by jquery-ujs
59    formSubmitSelector: 'form',
60
61    // Form input elements bound by jquery-ujs
62    formInputClickSelector: 'form input[type=submit], form input[type=image], form button[type=submit], form button:not(button[type])',
63
64    // Form input elements disabled during form submission
65    disableSelector: 'input[data-disable-with], button[data-disable-with], textarea[data-disable-with]',
66
67    // Form input elements re-enabled after form submission
68    enableSelector: 'input[data-disable-with]:disabled, button[data-disable-with]:disabled, textarea[data-disable-with]:disabled',
69
70    // Form required input elements
71    requiredInputSelector: 'input[name][required]:not([disabled]),textarea[name][required]:not([disabled])',
72
73    // Form file input elements
74    fileInputSelector: 'input:file',
75
76    // Link onClick disable selector with possible reenable after remote submission
77    linkDisableSelector: 'a[data-disable-with]',
78
79    // Make sure that every Ajax request sends the CSRF token
80    CSRFProtection: function(xhr) {
81      var token = $('meta[name="csrf-token"]').attr('content');
82      if (token) xhr.setRequestHeader('X-CSRF-Token', token);
83    },
84
85    // Triggers an event on an element and returns false if the event result is false
86    fire: function(obj, name, data) {
87      var event = $.Event(name);
88      obj.trigger(event, data);
89      return event.result !== false;
90    },
91
92    // Default confirm dialog, may be overridden with custom confirm dialog in $.rails.confirm
93    confirm: function(message) {
94      return confirm(message);
95    },
96
97    // Default ajax function, may be overridden with custom function in $.rails.ajax
98    ajax: function(options) {
99      return $.ajax(options);
100    },
101
102    // Default way to get an element's href. May be overridden at $.rails.href.
103    href: function(element) {
104      return element.attr('href');
105    },
106
107    // Submits "remote" forms and links with ajax
108    handleRemote: function(element) {
109      var method, url, data, crossDomain, dataType, options;
110
111      if (rails.fire(element, 'ajax:before')) {
112        crossDomain = element.data('cross-domain') || null;
113        dataType = element.data('type') || ($.ajaxSettings && $.ajaxSettings.dataType);
114
115        if (element.is('form')) {
116          method = element.attr('method');
117          url = element.attr('action');
118          data = element.serializeArray();
119          // memoized value from clicked submit button
120          var button = element.data('ujs:submit-button');
121          if (button) {
122            data.push(button);
123            element.data('ujs:submit-button', null);
124          }
125        } else if (element.is(rails.inputChangeSelector)) {
126          method = element.data('method');
127          url = element.data('url');
128          data = element.serialize();
129          if (element.data('params')) data = data + "&" + element.data('params');
130        } else {
131          method = element.data('method');
132          url = rails.href(element);
133          data = element.data('params') || null;
134        }
135
136        options = {
137          type: method || 'GET', data: data, dataType: dataType, crossDomain: crossDomain,
138          // stopping the "ajax:beforeSend" event will cancel the ajax request
139          beforeSend: function(xhr, settings) {
140            if (settings.dataType === undefined) {
141              xhr.setRequestHeader('accept', '*/*;q=0.5, ' + settings.accepts.script);
142            }
143            return rails.fire(element, 'ajax:beforeSend', [xhr, settings]);
144          },
145          success: function(data, status, xhr) {

146            element.trigger('ajax:success', [data, status, xhr]);
147          },
148          complete: function(xhr, status) {
149            element.trigger('ajax:complete', [xhr, status]);
150          },
151          error: function(xhr, status, error) {
152            element.trigger('ajax:error', [xhr, status, error]);
153          }
154        };
155        // Only pass url to `ajax` options if not blank
156        if (url) { options.url = url; }
157
158        return rails.ajax(options);
159      } else {
160        return false;
161      }
162    },
163
164    // Handles "data-method" on links such as:
165    // <a href="/users/5" data-method="delete" rel="nofollow" data-confirm="Are you sure?">Delete</a>
166    handleMethod: function(link) {
167      var href = rails.href(link),
168        method = link.data('method'),
169        target = link.attr('target'),
170        csrf_token = $('meta[name=csrf-token]').attr('content'),
171        csrf_param = $('meta[name=csrf-param]').attr('content'),
172        form = $('<form method="post" action="' + href + '"></form>'),
173        metadata_input = '<input name="_method" value="' + method + '" type="hidden" />';
174
175      if (csrf_param !== undefined && csrf_token !== undefined) {
176        metadata_input += '<input name="' + csrf_param + '" value="' + csrf_token + '" type="hidden" />';
177      }
178
179      if (target) { form.attr('target', target); }
180
181      form.hide().append(metadata_input).appendTo('body');
182      form.submit();
183    },
184
185    /* Disables form elements:
186      - Caches element value in 'ujs:enable-with' data store
187      - Replaces element text with value of 'data-disable-with' attribute
188      - Sets disabled property to true
189    */
190    disableFormElements: function(form) {
191      form.find(rails.disableSelector).each(function() {
192        var element = $(this), method = element.is('button') ? 'html' : 'val';
193        element.data('ujs:enable-with', element[method]());
194        element[method](element.data('disable-with'));
195        element.prop('disabled', true);
196      });
197    },
198
199    /* Re-enables disabled form elements:
200      - Replaces element text with cached value from 'ujs:enable-with' data store (created in `disableFormElements`)
201      - Sets disabled property to false
202    */
203    enableFormElements: function(form) {
204      form.find(rails.enableSelector).each(function() {
205        var element = $(this), method = element.is('button') ? 'html' : 'val';
206        if (element.data('ujs:enable-with')) element[method](element.data('ujs:enable-with'));
207        element.prop('disabled', false);
208      });
209    },
210
211   /* For 'data-confirm' attribute:
212      - Fires `confirm` event
213      - Shows the confirmation dialog
214      - Fires the `confirm:complete` event
215
216      Returns `true` if no function stops the chain and user chose yes; `false` otherwise.
217      Attaching a handler to the element's `confirm` event that returns a `falsy` value cancels the confirmation dialog.
218      Attaching a handler to the element's `confirm:complete` event that returns a `falsy` value makes this function
219      return false. The `confirm:complete` event is fired whether or not the user answered true or false to the dialog.
220   */
221    allowAction: function(element) {
222      var message = element.data('confirm'),
223          answer = false, callback;
224      if (!message) { return true; }
225
226      if (rails.fire(element, 'confirm')) {
227        answer = rails.confirm(message);
228        callback = rails.fire(element, 'confirm:complete', [answer]);
229      }
230      return answer && callback;
231    },
232
233    // Helper function which checks for blank inputs in a form that match the specified CSS selector
234    blankInputs: function(form, specifiedSelector, nonBlank) {
235      var inputs = $(), input,
236        selector = specifiedSelector || 'input,textarea';
237      form.find(selector).each(function() {
238        input = $(this);
239        // Collect non-blank inputs if nonBlank option is true, otherwise, collect blank inputs
240        if (nonBlank ? input.val() : !input.val()) {
241          inputs = inputs.add(input);
242        }
243      });
244      return inputs.length ? inputs : false;
245    },
246
247    // Helper function which checks for non-blank inputs in a form that match the specified CSS 

247selector
248    nonBlankInputs: function(form, specifiedSelector) {
249      return rails.blankInputs(form, specifiedSelector, true); // true specifies nonBlank
250    },
251
252    // Helper function, needed to provide consistent behavior in IE
253    stopEverything: function(e) {
254      $(e.target).trigger('ujs:everythingStopped');
255      e.stopImmediatePropagation();
256      return false;
257    },
258
259    // find all the submit events directly bound to the form and
260    // manually invoke them. If anyone returns false then stop the loop
261    callFormSubmitBindings: function(form, event) {
262      var events = form.data('events'), continuePropagation = true;
263      if (events !== undefined && events['submit'] !== undefined) {
264        $.each(events['submit'], function(i, obj){
265          if (typeof obj.handler === 'function') return continuePropagation = obj.handler(event);
266        });
267      }
268      return continuePropagation;
269    },
270
271    //  replace element's html with the 'data-disable-with' after storing original html
272    //  and prevent clicking on it
273    disableElement: function(element) {
274      element.data('ujs:enable-with', element.html()); // store enabled state
275      element.html(element.data('disable-with')); // set to disabled state
276      element.bind('click.railsDisable', function(e) { // prevent further clicking
277        return rails.stopEverything(e)
278      });
279    },
280
281    // restore element to its original state which was disabled by 'disableElement' above
282    enableElement: function(element) {
283      if (element.data('ujs:enable-with') !== undefined) {
284        element.html(element.data('ujs:enable-with')); // set to old enabled state
285        // this should be element.removeData('ujs:enable-with')
286        // but, there is currently a bug in jquery which makes hyphenated data attributes not get removed
287        element.data('ujs:enable-with', false); // clean up cache
288      }
289      element.unbind('click.railsDisable'); // enable element
290    }
291
292  };
293
294  $.ajaxPrefilter(function(options, originalOptions, xhr){ if ( !options.crossDomain ) { rails.CSRFProtection(xhr); }});
295
296  $(document).delegate(rails.linkDisableSelector, 'ajax:complete', function() {
297      rails.enableElement($(this));
298  });
299
300  $(document).delegate(rails.linkClickSelector, 'click.rails', function(e) {
301    var link = $(this), method = link.data('method'), data = link.data('params');
302    if (!rails.allowAction(link)) return rails.stopEverything(e);
303
304    if (link.is(rails.linkDisableSelector)) rails.disableElement(link);
305
306    if (link.data('remote') !== undefined) {
307      if ( (e.metaKey || e.ctrlKey) && (!method || method === 'GET') && !data ) { return true; }
308
309      if (rails.handleRemote(link) === false) { rails.enableElement(link); }
310      return false;
311
312    } else if (link.data('method')) {
313      rails.handleMethod(link);
314      return false;
315    }
316  });
317
318  $(document).delegate(rails.inputChangeSelector, 'change.rails', function(e) {
319    var link = $(this);
320    if (!rails.allowAction(link)) return rails.stopEverything(e);
321
322    rails.handleRemote(link);
323    return false;
324  });
325
326  $(document).delegate(rails.formSubmitSelector, 'submit.rails', function(e) {
327    var form = $(this),
328      remote = form.data('remote') !== undefined,
329      blankRequiredInputs = rails.blankInputs(form, rails.requiredInputSelector),
330      nonBlankFileInputs = rails.nonBlankInputs(form, rails.fileInputSelector);
331
332    if (!rails.allowAction(form)) return rails.stopEverything(e);
333
334    // skip other logic when required values are missing or file upload is present
335    if (blankRequiredInputs && form.attr("novalidate") == undefined && rails.fire(form, 'ajax:aborted:required', [blankRequiredInputs])) {
336      return rails.stopEverything(e);
337    }
338
339    if (remote) {
340      if (nonBlankFileInputs) {
341        return rails.fire(form, 'ajax:aborted:file', [nonBlankFileInputs]);
342      }
343
344      // If browser does not support submit bubbling, then this live-binding will be called before direct
345      // bindings. Therefore, we should directly call any direct bindings before remotely submitting form.
346      if (!$.support.submitBubbles && $().jquery < '1.7' && rails.callFormSubmitBindings(form, e) === false) return rails.stopEverything(e);
347
348      rails.handleRemote(form);
349      return false;

350
351    } else {
352      // slight timeout so that the submit button gets properly serialized
353      setTimeout(function(){ rails.disableFormElements(form); }, 13);
354    }
355  });
356
357  $(document).delegate(rails.formInputClickSelector, 'click.rails', function(event) {
358    var button = $(this);
359
360    if (!rails.allowAction(button)) return rails.stopEverything(event);
361
362    // register the pressed submit button
363    var name = button.attr('name'),
364      data = name ? {name:name, value:button.val()} : null;
365
366    button.closest('form').data('ujs:submit-button', data);
367  });
368
369  $(document).delegate(rails.formSubmitSelector, 'ajax:beforeSend.rails', function(event) {
370    if (this == event.target) rails.disableFormElements($(this));
371  });
372
373  $(document).delegate(rails.formSubmitSelector, 'ajax:complete.rails', function(event) {
374    if (this == event.target) rails.enableFormElements($(this));
375  });
376
377})( jQuery );