556 lines
21 KiB
JavaScript
556 lines
21 KiB
JavaScript
(function($, undefined) {
|
|
|
|
/**
|
|
* Unobtrusive scripting adapter for jQuery
|
|
* https://github.com/rails/jquery-ujs
|
|
*
|
|
* Requires jQuery 1.8.0 or later.
|
|
*
|
|
* Released under the MIT license
|
|
*
|
|
*/
|
|
|
|
// Cut down on the number of issues from people inadvertently including jquery_ujs twice
|
|
// by detecting and raising an error when it happens.
|
|
'use strict';
|
|
|
|
if ( $.rails !== undefined ) {
|
|
$.error('jquery-ujs has already been loaded!');
|
|
}
|
|
|
|
// Shorthand to make it a little easier to call public rails functions from within rails.js
|
|
var rails;
|
|
var $document = $(document);
|
|
|
|
$.rails = rails = {
|
|
// Link elements bound by jquery-ujs
|
|
linkClickSelector: 'a[data-confirm], a[data-method], a[data-remote]:not([disabled]), a[data-disable-with], a[data-disable]',
|
|
|
|
// Button elements bound by jquery-ujs
|
|
buttonClickSelector: 'button[data-remote]:not([form]):not(form button), button[data-confirm]:not([form]):not(form button)',
|
|
|
|
// Select elements bound by jquery-ujs
|
|
inputChangeSelector: 'select[data-remote], input[data-remote], textarea[data-remote]',
|
|
|
|
// Form elements bound by jquery-ujs
|
|
formSubmitSelector: 'form',
|
|
|
|
// Form input elements bound by jquery-ujs
|
|
formInputClickSelector: 'form input[type=submit], form input[type=image], form button[type=submit], form button:not([type]), input[type=submit][form], input[type=image][form], button[type=submit][form], button[form]:not([type])',
|
|
|
|
// Form input elements disabled during form submission
|
|
disableSelector: 'input[data-disable-with]:enabled, button[data-disable-with]:enabled, textarea[data-disable-with]:enabled, input[data-disable]:enabled, button[data-disable]:enabled, textarea[data-disable]:enabled',
|
|
|
|
// Form input elements re-enabled after form submission
|
|
enableSelector: 'input[data-disable-with]:disabled, button[data-disable-with]:disabled, textarea[data-disable-with]:disabled, input[data-disable]:disabled, button[data-disable]:disabled, textarea[data-disable]:disabled',
|
|
|
|
// Form required input elements
|
|
requiredInputSelector: 'input[name][required]:not([disabled]), textarea[name][required]:not([disabled])',
|
|
|
|
// Form file input elements
|
|
fileInputSelector: 'input[type=file]:not([disabled])',
|
|
|
|
// Link onClick disable selector with possible reenable after remote submission
|
|
linkDisableSelector: 'a[data-disable-with], a[data-disable]',
|
|
|
|
// Button onClick disable selector with possible reenable after remote submission
|
|
buttonDisableSelector: 'button[data-remote][data-disable-with], button[data-remote][data-disable]',
|
|
|
|
// Up-to-date Cross-Site Request Forgery token
|
|
csrfToken: function() {
|
|
return $('meta[name=csrf-token]').attr('content');
|
|
},
|
|
|
|
// URL param that must contain the CSRF token
|
|
csrfParam: function() {
|
|
return $('meta[name=csrf-param]').attr('content');
|
|
},
|
|
|
|
// Make sure that every Ajax request sends the CSRF token
|
|
CSRFProtection: function(xhr) {
|
|
var token = rails.csrfToken();
|
|
if (token) xhr.setRequestHeader('X-CSRF-Token', token);
|
|
},
|
|
|
|
// Make sure that all forms have actual up-to-date tokens (cached forms contain old ones)
|
|
refreshCSRFTokens: function(){
|
|
$('form input[name="' + rails.csrfParam() + '"]').val(rails.csrfToken());
|
|
},
|
|
|
|
// Triggers an event on an element and returns false if the event result is false
|
|
fire: function(obj, name, data) {
|
|
var event = $.Event(name);
|
|
obj.trigger(event, data);
|
|
return event.result !== false;
|
|
},
|
|
|
|
// Default confirm dialog, may be overridden with custom confirm dialog in $.rails.confirm
|
|
confirm: function(message) {
|
|
return confirm(message);
|
|
},
|
|
|
|
// Default ajax function, may be overridden with custom function in $.rails.ajax
|
|
ajax: function(options) {
|
|
return $.ajax(options);
|
|
},
|
|
|
|
// Default way to get an element's href. May be overridden at $.rails.href.
|
|
href: function(element) {
|
|
return element[0].href;
|
|
},
|
|
|
|
// Checks "data-remote" if true to handle the request through a XHR request.
|
|
isRemote: function(element) {
|
|
return element.data('remote') !== undefined && element.data('remote') !== false;
|
|
},
|
|
|
|
// Submits "remote" forms and links with ajax
|
|
handleRemote: function(element) {
|
|
var method, url, data, withCredentials, dataType, options;
|
|
|
|
if (rails.fire(element, 'ajax:before')) {
|
|
withCredentials = element.data('with-credentials') || null;
|
|
dataType = element.data('type') || ($.ajaxSettings && $.ajaxSettings.dataType);
|
|
|
|
if (element.is('form')) {
|
|
method = element.data('ujs:submit-button-formmethod') || element.attr('method');
|
|
url = element.data('ujs:submit-button-formaction') || element.attr('action');
|
|
data = $(element[0]).serializeArray();
|
|
// memoized value from clicked submit button
|
|
var button = element.data('ujs:submit-button');
|
|
if (button) {
|
|
data.push(button);
|
|
element.data('ujs:submit-button', null);
|
|
}
|
|
element.data('ujs:submit-button-formmethod', null);
|
|
element.data('ujs:submit-button-formaction', null);
|
|
} else if (element.is(rails.inputChangeSelector)) {
|
|
method = element.data('method');
|
|
url = element.data('url');
|
|
data = element.serialize();
|
|
if (element.data('params')) data = data + '&' + element.data('params');
|
|
} else if (element.is(rails.buttonClickSelector)) {
|
|
method = element.data('method') || 'get';
|
|
url = element.data('url');
|
|
data = element.serialize();
|
|
if (element.data('params')) data = data + '&' + element.data('params');
|
|
} else {
|
|
method = element.data('method');
|
|
url = rails.href(element);
|
|
data = element.data('params') || null;
|
|
}
|
|
|
|
options = {
|
|
type: method || 'GET', data: data, dataType: dataType,
|
|
// stopping the "ajax:beforeSend" event will cancel the ajax request
|
|
beforeSend: function(xhr, settings) {
|
|
if (settings.dataType === undefined) {
|
|
xhr.setRequestHeader('accept', '*/*;q=0.5, ' + settings.accepts.script);
|
|
}
|
|
if (rails.fire(element, 'ajax:beforeSend', [xhr, settings])) {
|
|
element.trigger('ajax:send', xhr);
|
|
} else {
|
|
return false;
|
|
}
|
|
},
|
|
success: function(data, status, xhr) {
|
|
element.trigger('ajax:success', [data, status, xhr]);
|
|
},
|
|
complete: function(xhr, status) {
|
|
element.trigger('ajax:complete', [xhr, status]);
|
|
},
|
|
error: function(xhr, status, error) {
|
|
element.trigger('ajax:error', [xhr, status, error]);
|
|
},
|
|
crossDomain: rails.isCrossDomain(url)
|
|
};
|
|
|
|
// There is no withCredentials for IE6-8 when
|
|
// "Enable native XMLHTTP support" is disabled
|
|
if (withCredentials) {
|
|
options.xhrFields = {
|
|
withCredentials: withCredentials
|
|
};
|
|
}
|
|
|
|
// Only pass url to `ajax` options if not blank
|
|
if (url) { options.url = url; }
|
|
|
|
return rails.ajax(options);
|
|
} else {
|
|
return false;
|
|
}
|
|
},
|
|
|
|
// Determines if the request is a cross domain request.
|
|
isCrossDomain: function(url) {
|
|
var originAnchor = document.createElement('a');
|
|
originAnchor.href = location.href;
|
|
var urlAnchor = document.createElement('a');
|
|
|
|
try {
|
|
urlAnchor.href = url;
|
|
// This is a workaround to a IE bug.
|
|
urlAnchor.href = urlAnchor.href;
|
|
|
|
// If URL protocol is false or is a string containing a single colon
|
|
// *and* host are false, assume it is not a cross-domain request
|
|
// (should only be the case for IE7 and IE compatibility mode).
|
|
// Otherwise, evaluate protocol and host of the URL against the origin
|
|
// protocol and host.
|
|
return !(((!urlAnchor.protocol || urlAnchor.protocol === ':') && !urlAnchor.host) ||
|
|
(originAnchor.protocol + '//' + originAnchor.host ===
|
|
urlAnchor.protocol + '//' + urlAnchor.host));
|
|
} catch (e) {
|
|
// If there is an error parsing the URL, assume it is crossDomain.
|
|
return true;
|
|
}
|
|
},
|
|
|
|
// Handles "data-method" on links such as:
|
|
// <a href="/users/5" data-method="delete" rel="nofollow" data-confirm="Are you sure?">Delete</a>
|
|
handleMethod: function(link) {
|
|
var href = rails.href(link),
|
|
method = link.data('method'),
|
|
target = link.attr('target'),
|
|
csrfToken = rails.csrfToken(),
|
|
csrfParam = rails.csrfParam(),
|
|
form = $('<form method="post" action="' + href + '"></form>'),
|
|
metadataInput = '<input name="_method" value="' + method + '" type="hidden" />';
|
|
|
|
if (csrfParam !== undefined && csrfToken !== undefined && !rails.isCrossDomain(href)) {
|
|
metadataInput += '<input name="' + csrfParam + '" value="' + csrfToken + '" type="hidden" />';
|
|
}
|
|
|
|
if (target) { form.attr('target', target); }
|
|
|
|
form.hide().append(metadataInput).appendTo('body');
|
|
form.submit();
|
|
},
|
|
|
|
// Helper function that returns form elements that match the specified CSS selector
|
|
// If form is actually a "form" element this will return associated elements outside the from that have
|
|
// the html form attribute set
|
|
formElements: function(form, selector) {
|
|
return form.is('form') ? $(form[0].elements).filter(selector) : form.find(selector);
|
|
},
|
|
|
|
/* Disables form elements:
|
|
- Caches element value in 'ujs:enable-with' data store
|
|
- Replaces element text with value of 'data-disable-with' attribute
|
|
- Sets disabled property to true
|
|
*/
|
|
disableFormElements: function(form) {
|
|
rails.formElements(form, rails.disableSelector).each(function() {
|
|
rails.disableFormElement($(this));
|
|
});
|
|
},
|
|
|
|
disableFormElement: function(element) {
|
|
var method, replacement;
|
|
|
|
method = element.is('button') ? 'html' : 'val';
|
|
replacement = element.data('disable-with');
|
|
|
|
if (replacement !== undefined) {
|
|
element.data('ujs:enable-with', element[method]());
|
|
element[method](replacement);
|
|
}
|
|
|
|
element.prop('disabled', true);
|
|
element.data('ujs:disabled', true);
|
|
},
|
|
|
|
/* Re-enables disabled form elements:
|
|
- Replaces element text with cached value from 'ujs:enable-with' data store (created in `disableFormElements`)
|
|
- Sets disabled property to false
|
|
*/
|
|
enableFormElements: function(form) {
|
|
rails.formElements(form, rails.enableSelector).each(function() {
|
|
rails.enableFormElement($(this));
|
|
});
|
|
},
|
|
|
|
enableFormElement: function(element) {
|
|
var method = element.is('button') ? 'html' : 'val';
|
|
if (element.data('ujs:enable-with') !== undefined) {
|
|
element[method](element.data('ujs:enable-with'));
|
|
element.removeData('ujs:enable-with'); // clean up cache
|
|
}
|
|
element.prop('disabled', false);
|
|
element.removeData('ujs:disabled');
|
|
},
|
|
|
|
/* For 'data-confirm' attribute:
|
|
- Fires `confirm` event
|
|
- Shows the confirmation dialog
|
|
- Fires the `confirm:complete` event
|
|
|
|
Returns `true` if no function stops the chain and user chose yes; `false` otherwise.
|
|
Attaching a handler to the element's `confirm` event that returns a `falsy` value cancels the confirmation dialog.
|
|
Attaching a handler to the element's `confirm:complete` event that returns a `falsy` value makes this function
|
|
return false. The `confirm:complete` event is fired whether or not the user answered true or false to the dialog.
|
|
*/
|
|
allowAction: function(element) {
|
|
var message = element.data('confirm'),
|
|
answer = false, callback;
|
|
if (!message) { return true; }
|
|
|
|
if (rails.fire(element, 'confirm')) {
|
|
try {
|
|
answer = rails.confirm(message);
|
|
} catch (e) {
|
|
(console.error || console.log).call(console, e.stack || e);
|
|
}
|
|
callback = rails.fire(element, 'confirm:complete', [answer]);
|
|
}
|
|
return answer && callback;
|
|
},
|
|
|
|
// Helper function which checks for blank inputs in a form that match the specified CSS selector
|
|
blankInputs: function(form, specifiedSelector, nonBlank) {
|
|
var foundInputs = $(),
|
|
input,
|
|
valueToCheck,
|
|
radiosForNameWithNoneSelected,
|
|
radioName,
|
|
selector = specifiedSelector || 'input,textarea',
|
|
requiredInputs = form.find(selector),
|
|
checkedRadioButtonNames = {};
|
|
|
|
requiredInputs.each(function() {
|
|
input = $(this);
|
|
if (input.is('input[type=radio]')) {
|
|
|
|
// Don't count unchecked required radio as blank if other radio with same name is checked,
|
|
// regardless of whether same-name radio input has required attribute or not. The spec
|
|
// states https://www.w3.org/TR/html5/forms.html#the-required-attribute
|
|
radioName = input.attr('name');
|
|
|
|
// Skip if we've already seen the radio with this name.
|
|
if (!checkedRadioButtonNames[radioName]) {
|
|
|
|
// If none checked
|
|
if (form.find('input[type=radio]:checked[name="' + radioName + '"]').length === 0) {
|
|
radiosForNameWithNoneSelected = form.find(
|
|
'input[type=radio][name="' + radioName + '"]');
|
|
foundInputs = foundInputs.add(radiosForNameWithNoneSelected);
|
|
}
|
|
|
|
// We only need to check each name once.
|
|
checkedRadioButtonNames[radioName] = radioName;
|
|
}
|
|
} else {
|
|
valueToCheck = input.is('input[type=checkbox],input[type=radio]') ? input.is(':checked') : !!input.val();
|
|
if (valueToCheck === nonBlank) {
|
|
foundInputs = foundInputs.add(input);
|
|
}
|
|
}
|
|
});
|
|
return foundInputs.length ? foundInputs : false;
|
|
},
|
|
|
|
// Helper function which checks for non-blank inputs in a form that match the specified CSS selector
|
|
nonBlankInputs: function(form, specifiedSelector) {
|
|
return rails.blankInputs(form, specifiedSelector, true); // true specifies nonBlank
|
|
},
|
|
|
|
// Helper function, needed to provide consistent behavior in IE
|
|
stopEverything: function(e) {
|
|
$(e.target).trigger('ujs:everythingStopped');
|
|
e.stopImmediatePropagation();
|
|
return false;
|
|
},
|
|
|
|
// Replace element's html with the 'data-disable-with' after storing original html
|
|
// and prevent clicking on it
|
|
disableElement: function(element) {
|
|
var replacement = element.data('disable-with');
|
|
|
|
if (replacement !== undefined) {
|
|
element.data('ujs:enable-with', element.html()); // store enabled state
|
|
element.html(replacement);
|
|
}
|
|
|
|
element.bind('click.railsDisable', function(e) { // prevent further clicking
|
|
return rails.stopEverything(e);
|
|
});
|
|
element.data('ujs:disabled', true);
|
|
},
|
|
|
|
// Restore element to its original state which was disabled by 'disableElement' above
|
|
enableElement: function(element) {
|
|
if (element.data('ujs:enable-with') !== undefined) {
|
|
element.html(element.data('ujs:enable-with')); // set to old enabled state
|
|
element.removeData('ujs:enable-with'); // clean up cache
|
|
}
|
|
element.unbind('click.railsDisable'); // enable element
|
|
element.removeData('ujs:disabled');
|
|
}
|
|
};
|
|
|
|
if (rails.fire($document, 'rails:attachBindings')) {
|
|
|
|
$.ajaxPrefilter(function(options, originalOptions, xhr){ if ( !options.crossDomain ) { rails.CSRFProtection(xhr); }});
|
|
|
|
// This event works the same as the load event, except that it fires every
|
|
// time the page is loaded.
|
|
//
|
|
// See https://github.com/rails/jquery-ujs/issues/357
|
|
// See https://developer.mozilla.org/en-US/docs/Using_Firefox_1.5_caching
|
|
$(window).on('pageshow.rails', function () {
|
|
$($.rails.enableSelector).each(function () {
|
|
var element = $(this);
|
|
|
|
if (element.data('ujs:disabled')) {
|
|
$.rails.enableFormElement(element);
|
|
}
|
|
});
|
|
|
|
$($.rails.linkDisableSelector).each(function () {
|
|
var element = $(this);
|
|
|
|
if (element.data('ujs:disabled')) {
|
|
$.rails.enableElement(element);
|
|
}
|
|
});
|
|
});
|
|
|
|
$document.delegate(rails.linkDisableSelector, 'ajax:complete', function() {
|
|
rails.enableElement($(this));
|
|
});
|
|
|
|
$document.delegate(rails.buttonDisableSelector, 'ajax:complete', function() {
|
|
rails.enableFormElement($(this));
|
|
});
|
|
|
|
$document.delegate(rails.linkClickSelector, 'click.rails', function(e) {
|
|
var link = $(this), method = link.data('method'), data = link.data('params'), metaClick = e.metaKey || e.ctrlKey;
|
|
if (!rails.allowAction(link)) return rails.stopEverything(e);
|
|
|
|
if (!metaClick && link.is(rails.linkDisableSelector)) rails.disableElement(link);
|
|
|
|
if (rails.isRemote(link)) {
|
|
if (metaClick && (!method || method === 'GET') && !data) { return true; }
|
|
|
|
var handleRemote = rails.handleRemote(link);
|
|
// Response from rails.handleRemote() will either be false or a deferred object promise.
|
|
if (handleRemote === false) {
|
|
rails.enableElement(link);
|
|
} else {
|
|
handleRemote.fail( function() { rails.enableElement(link); } );
|
|
}
|
|
return false;
|
|
|
|
} else if (method) {
|
|
rails.handleMethod(link);
|
|
return false;
|
|
}
|
|
});
|
|
|
|
$document.delegate(rails.buttonClickSelector, 'click.rails', function(e) {
|
|
var button = $(this);
|
|
|
|
if (!rails.allowAction(button) || !rails.isRemote(button)) return rails.stopEverything(e);
|
|
|
|
if (button.is(rails.buttonDisableSelector)) rails.disableFormElement(button);
|
|
|
|
var handleRemote = rails.handleRemote(button);
|
|
// Response from rails.handleRemote() will either be false or a deferred object promise.
|
|
if (handleRemote === false) {
|
|
rails.enableFormElement(button);
|
|
} else {
|
|
handleRemote.fail( function() { rails.enableFormElement(button); } );
|
|
}
|
|
return false;
|
|
});
|
|
|
|
$document.delegate(rails.inputChangeSelector, 'change.rails', function(e) {
|
|
var link = $(this);
|
|
if (!rails.allowAction(link) || !rails.isRemote(link)) return rails.stopEverything(e);
|
|
|
|
rails.handleRemote(link);
|
|
return false;
|
|
});
|
|
|
|
$document.delegate(rails.formSubmitSelector, 'submit.rails', function(e) {
|
|
var form = $(this),
|
|
remote = rails.isRemote(form),
|
|
blankRequiredInputs,
|
|
nonBlankFileInputs;
|
|
|
|
if (!rails.allowAction(form)) return rails.stopEverything(e);
|
|
|
|
// Skip other logic when required values are missing or file upload is present
|
|
if (form.attr('novalidate') === undefined) {
|
|
if (form.data('ujs:formnovalidate-button') === undefined) {
|
|
blankRequiredInputs = rails.blankInputs(form, rails.requiredInputSelector, false);
|
|
if (blankRequiredInputs && rails.fire(form, 'ajax:aborted:required', [blankRequiredInputs])) {
|
|
return rails.stopEverything(e);
|
|
}
|
|
} else {
|
|
// Clear the formnovalidate in case the next button click is not on a formnovalidate button
|
|
// Not strictly necessary to do here, since it is also reset on each button click, but just to be certain
|
|
form.data('ujs:formnovalidate-button', undefined);
|
|
}
|
|
}
|
|
|
|
if (remote) {
|
|
nonBlankFileInputs = rails.nonBlankInputs(form, rails.fileInputSelector);
|
|
if (nonBlankFileInputs) {
|
|
// Slight timeout so that the submit button gets properly serialized
|
|
// (make it easy for event handler to serialize form without disabled values)
|
|
setTimeout(function(){ rails.disableFormElements(form); }, 13);
|
|
var aborted = rails.fire(form, 'ajax:aborted:file', [nonBlankFileInputs]);
|
|
|
|
// Re-enable form elements if event bindings return false (canceling normal form submission)
|
|
if (!aborted) { setTimeout(function(){ rails.enableFormElements(form); }, 13); }
|
|
|
|
return aborted;
|
|
}
|
|
|
|
rails.handleRemote(form);
|
|
return false;
|
|
|
|
} else {
|
|
// Slight timeout so that the submit button gets properly serialized
|
|
setTimeout(function(){ rails.disableFormElements(form); }, 13);
|
|
}
|
|
});
|
|
|
|
$document.delegate(rails.formInputClickSelector, 'click.rails', function(event) {
|
|
var button = $(this);
|
|
|
|
if (!rails.allowAction(button)) return rails.stopEverything(event);
|
|
|
|
// Register the pressed submit button
|
|
var name = button.attr('name'),
|
|
data = name ? {name:name, value:button.val()} : null;
|
|
|
|
var form = button.closest('form');
|
|
if (form.length === 0) {
|
|
form = $('#' + button.attr('form'));
|
|
}
|
|
form.data('ujs:submit-button', data);
|
|
|
|
// Save attributes from button
|
|
form.data('ujs:formnovalidate-button', button.attr('formnovalidate'));
|
|
form.data('ujs:submit-button-formaction', button.attr('formaction'));
|
|
form.data('ujs:submit-button-formmethod', button.attr('formmethod'));
|
|
});
|
|
|
|
$document.delegate(rails.formSubmitSelector, 'ajax:send.rails', function(event) {
|
|
if (this === event.target) rails.disableFormElements($(this));
|
|
});
|
|
|
|
$document.delegate(rails.formSubmitSelector, 'ajax:complete.rails', function(event) {
|
|
if (this === event.target) rails.enableFormElements($(this));
|
|
});
|
|
|
|
$(function(){
|
|
rails.refreshCSRFTokens();
|
|
});
|
|
}
|
|
|
|
})( jQuery );
|