/*global $, document, Event, VuFind, window */
VuFind.lightbox = (function() {
// State
var _originalUrl = false;
var _currentUrl = false;
var refreshOnClose = false;
// Elements
var _modal, _modalBody, _clickedButton = null;
// Utilities
var _html = function(html) {
_modalBody.html(html);
_modal.modal('handleUpdate');
};
// Public: Present an alert
var showAlert = function(message, type) {
if ('undefined' == typeof type) {
type = 'info';
}
_html('<div class="alert alert-'+type+'">'+message+'</div>\
<button class="btn btn-default" data-dismiss="modal">' + VuFind.translate('close') + '</button>');
_modal.modal('show');
};
var flashMessage = function(message, type) {
_modalBody.find('.alert,.fa.fa-spinner').remove();
_modalBody.find('h2:first-child')
.after('<div class="alert alert-'+type+'">'+message+'</div>');
};
/**
* Update content
*
* Form data options:
*
* data-lightbox-ignore = do not submit this form in lightbox
*/
var _update = function(html) {
if (!html.match) return;
// Isolate successes
var htmlDiv = $('<div>'+html+'</div>');
var alerts = htmlDiv.find('.alert-success');
if (alerts.length > 0) {
showAlert(alerts[0].innerHTML, 'success');
return;
}
// Deframe HTML
if (html.match('<!DOCTYPE html>')) {
html = htmlDiv.find('.main > .container').html();
}
// Fill HTML
_html(html);
_modal.modal('show');
// Attach capturing events
_modalBody.find('a').click(_constrainLink);
// Handle submit buttons attached to a form as well as those in a form. Store
// information about which button was clicked here as checking focused button
// doesn't work on all browsers and platforms.
_modalBody.find('[type=submit]').click(_storeClickedStatus);
var forms = _modalBody.find('form:not([data-lightbox-ignore])');
for (var i=0;i<forms.length;i++) {
$(forms[i]).on('submit', _formSubmit);
}
// Select all checkboxes
$('#modal').find('.checkbox-select-all').change(function() {
$(this).closest('.modal-body').find('.checkbox-select-item').prop('checked', this.checked);
});
$('#modal').find('.checkbox-select-item').change(function() {
$(this).closest('.modal-body').find('.checkbox-select-all').prop('checked', false);
});
};
var _storeClickedStatus = function() {
_clickedButton = this;
};
var _xhr = false;
// Public: Handle AJAX in the Lightbox
var ajax = function(obj) {
if (_xhr !== false) return;
if (_originalUrl === false) {
_originalUrl = obj.url;
}
// Add lightbox GET parameter
if (!obj.url.match(/layout=lightbox/)) {
var parts = obj.url.split('#');
obj.url = parts[0].indexOf('?') < 0
? parts[0]+'?'
: parts[0]+'&';
obj.url += 'layout=lightbox&lbreferer='+encodeURIComponent(_currentUrl);
obj.url += parts.length < 2 ? '' : '#'+parts[1];
}
_xhr = $.ajax(obj);
_xhr.always(function() { _xhr = false; })
.done(function(html, status, jq_xhr) {
if (jq_xhr.status == 205) {
_refreshPage();
return;
}
if ( // Close the lightbox after deliberate login
obj.method // is a form
&& !html.match(/alert alert-danger/) // skip failed logins
&& (obj.url.match(/MyResearch/) // that matches login/create account
|| obj.url.match(/catalogLogin/)) // catalog login for holds
) {
if (_originalUrl.match(/UserLogin/) || obj.url.match(/catalogLogin/)) {
var event = new CustomEvent('VuFind.lightbox.login', {
detail: {
originalUrl: _originalUrl,
formUrl: obj.url
},
bubbles: true,
cancelable: true
});
if (document.dispatchEvent(event)) {
_refreshPage();
}
return false;
} else {
VuFind.lightbox.refreshOnClose = true;
}
}
_update(html);
})
.fail(function() {
showAlert(VuFind.translate('error_occurred'), 'danger');
});
return _xhr;
};
var reload = function() {
ajax({url:_currentUrl || _originalUrl});
};
/**
* Modal link data options
*
* data-lightbox-href = go to this url instead
* data-lightbox-ignore = do not open this link in lightbox
* data-lightbox-post = post data
*/
var _constrainLink = function(event) {
if (typeof this.dataset.lightboxIgnore != 'undefined') {
return true;
}
if (this.href.length > 1) {
event.preventDefault();
var obj = {url: this.dataset.lightboxHref || this.href};
if("string" === typeof this.dataset.lightboxPost) {
obj.type = 'POST';
obj.data = this.dataset.lightboxPost;
}
ajax(obj);
_currentUrl = this.href;
VuFind.modal('show');
return false;
}
};
/**
* Handle form submission.
*
* Form data options:
*
* data-lightbox-onsubmit = on submit, run named function
* data-lightbox-onclose = on close, run named function
*
* Submit button data options:
*
* data-lightbox-ignore = do not handle clicking this button in lightbox
*/
var _formSubmit = function(event) {
// Gather data
var form = event.target;
var dataset = form.dataset;
var data = $(form).serializeArray();
data.push({'name':'layout', 'value':'lightbox'}); // Return in lightbox, please
// Add submit button information
var submit = $(_clickedButton);
_clickedButton = null;
var buttonData = {'name':name, 'value':1};
if (submit.length > 0) {
if (typeof submit.data('lightbox-ignore') !== 'undefined') {
return true;
}
// Prevent multiple submission of submit button in lightbox
if (submit.closest(_modal).length > 0) {
submit.attr('disabled', 'disabled');
}
buttonData.name = submit.attr('name') || 'submit';
buttonData.value = submit.attr('value') || 1;
}
data.push(buttonData);
// Special handlers
if ('undefined' !== typeof dataset) {
// On submit behavior
if ('string' === typeof dataset.lightboxOnsubmit) {
var ret = _evalCallback(dataset.lightboxOnsubmit, event, data);
// return true or false to send that to the form
// return null or anything else to continue to the ajax
if (ret === false || ret === true) {
return ret;
}
}
// onclose behavior
if ('string' === typeof dataset.lightboxOnclose) {
document.addEventListener('VuFind.lightbox.closed', function(event) {
_evalCallback(dataset.lightboxOnclose, event);
}, false);
}
}
// Loading
_modalBody.prepend('<i class="fa fa-spinner fa-spin pull-right"></i>');
// Get Lightbox content
ajax({
url: form.action || _currentUrl,
method: form.method || 'GET',
data: data
});
VuFind.modal('show');
return false;
};
/**
* Evaluate a callback
*/
var _evalCallback = function(callback, event, data) {
if ('function' === typeof window[callback]) {
return window[callback](event, data);
} else {
return eval('(function(event, data) {' + callback + '}())'); // inline code
}
};
/**
* Reload the page without causing trouble with POST parameters while keeping hash
*/
var _refreshPage = function() {
var parts = window.location.href.split('#');
if (typeof parts[1] === 'undefined') {
window.location.href = window.location.href;
} else {
var href = parts[0];
// Force reload with a timestamp
href += href.indexOf('?') == -1 ? '?_=' : '&_=';
href += new Date().getTime() + '#' + parts[1];
window.location.href = href;
}
};
// Public: Attach listeners to the page
var bind = function(target) {
if ('undefined' === typeof target) {
target = document;
}
$(target).find('a[data-lightbox]')
.unbind('click', _constrainLink)
.on('click', _constrainLink);
$(target).find('form[data-lightbox]')
.unbind('submit', _formSubmit)
.on('submit', _formSubmit);
// Handle submit buttons attached to a form as well as those in a form. Store
// information about which button was clicked here as checking focused button
// doesn't work on all browsers and platforms.
$('form[data-lightbox] [type=submit]').click(_storeClickedStatus);
};
// Reveal
return {
// Properties
refreshOnClose: refreshOnClose,
// Methods
ajax: ajax,
alert: showAlert,
bind: bind,
flashMessage: flashMessage,
reload: reload,
reset: function() {
_html(VuFind.translate('loading') + '...');
_originalUrl = false;
_currentUrl = false;
},
// Ready
ready: function() {
_modal = $('#modal');
_modalBody = _modal.find('.modal-body');
_modal.on('hide.bs.modal', function() {
if (VuFind.lightbox.refreshOnClose) {
_refreshPage();
}
document.dispatchEvent(new Event('VuFind.lightbox.closing'));
});
_modal.on('hidden.bs.modal', function() {
document.dispatchEvent(new Event('VuFind.lightbox.closed'));
VuFind.lightbox.reset();
});
VuFind.modal = function(cmd) { _modal.modal(cmd); };
bind();
}
};
})();
$(document).ready(VuFind.lightbox.ready);