function replaceDocument(docString) {
|
var doc = document.open("text/html");
|
|
doc.write(docString);
|
doc.close();
|
}
|
|
function doAjaxSubmit(e) {
|
var form = $(this);
|
var btn = $(this.clk);
|
var method = (
|
btn.data('method') ||
|
form.data('method') ||
|
form.attr('method') || 'GET'
|
).toUpperCase();
|
|
if (method === 'GET') {
|
// GET requests can always use standard form submits.
|
return;
|
}
|
|
var contentType =
|
form.find('input[data-override="content-type"]').val() ||
|
form.find('select[data-override="content-type"] option:selected').text();
|
|
if (method === 'POST' && !contentType) {
|
// POST requests can use standard form submits, unless we have
|
// overridden the content type.
|
return;
|
}
|
|
// At this point we need to make an AJAX form submission.
|
e.preventDefault();
|
|
var url = form.attr('action');
|
var data;
|
|
if (contentType) {
|
data = form.find('[data-override="content"]').val() || ''
|
|
if (contentType === 'multipart/form-data') {
|
// We need to add a boundary parameter to the header
|
// We assume the first valid-looking boundary line in the body is correct
|
// regex is from RFC 2046 appendix A
|
var boundaryCharNoSpace = "0-9A-Z'()+_,-./:=?";
|
var boundaryChar = boundaryCharNoSpace + ' ';
|
var re = new RegExp('^--([' + boundaryChar + ']{0,69}[' + boundaryCharNoSpace + '])[\\s]*?$', 'im');
|
var boundary = data.match(re);
|
if (boundary !== null) {
|
contentType += '; boundary="' + boundary[1] + '"';
|
}
|
// Fix textarea.value EOL normalisation (multipart/form-data should use CR+NL, not NL)
|
data = data.replace(/\n/g, '\r\n');
|
}
|
} else {
|
contentType = form.attr('enctype') || form.attr('encoding')
|
|
if (contentType === 'multipart/form-data') {
|
if (!window.FormData) {
|
alert('Your browser does not support AJAX multipart form submissions');
|
return;
|
}
|
|
// Use the FormData API and allow the content type to be set automatically,
|
// so it includes the boundary string.
|
// See https://developer.mozilla.org/en-US/docs/Web/API/FormData/Using_FormData_Objects
|
contentType = false;
|
data = new FormData(form[0]);
|
} else {
|
contentType = 'application/x-www-form-urlencoded; charset=UTF-8'
|
data = form.serialize();
|
}
|
}
|
|
var ret = $.ajax({
|
url: url,
|
method: method,
|
data: data,
|
contentType: contentType,
|
processData: false,
|
headers: {
|
'Accept': 'text/html; q=1.0, */*'
|
},
|
});
|
|
ret.always(function(data, textStatus, jqXHR) {
|
if (textStatus != 'success') {
|
jqXHR = data;
|
}
|
|
var responseContentType = jqXHR.getResponseHeader("content-type") || "";
|
|
if (responseContentType.toLowerCase().indexOf('text/html') === 0) {
|
replaceDocument(jqXHR.responseText);
|
|
try {
|
// Modify the location and scroll to top, as if after page load.
|
history.replaceState({}, '', url);
|
scroll(0, 0);
|
} catch (err) {
|
// History API not supported, so redirect.
|
window.location = url;
|
}
|
} else {
|
// Not HTML content. We can't open this directly, so redirect.
|
window.location = url;
|
}
|
});
|
|
return ret;
|
}
|
|
function captureSubmittingElement(e) {
|
var target = e.target;
|
var form = this;
|
|
form.clk = target;
|
}
|
|
$.fn.ajaxForm = function() {
|
var options = {}
|
|
return this
|
.unbind('submit.form-plugin click.form-plugin')
|
.bind('submit.form-plugin', options, doAjaxSubmit)
|
.bind('click.form-plugin', options, captureSubmittingElement);
|
};
|
