240 lines
7.1 KiB
JavaScript
240 lines
7.1 KiB
JavaScript
(function($) {
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$.entwine('ss', function($){
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/**
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* Shows a previewable website state alongside its editable version in backend UI, typically a page.
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* This allows CMS users to seamlessly switch between preview and edit mode in the same browser window.
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* The preview panel is embedded in the layout of the backend UI, and loads its content via an iframe.
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*
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* The admin UI itself is collapsible, leaving most screen space to this panel.
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* Relies on the server responses to indicate if a preview URL is available for the currently loaded
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* admin interface. If no preview is available, the panel is "blocked" automatically.
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*
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* Internal links within the preview iframe trigger a refresh of the admin panel as well,
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* while all external links are disabled (via JavaScript).
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*/
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$('.cms-preview').entwine({
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// Minimum width to keep the CMS operational
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SharedWidth: null,
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onmatch: function() {
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var self = this, layoutContainer = this.parent();
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// this.resizable({
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// handles: 'w',
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// stop: function(e, ui) {
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// $('.cms-container').layout({resize: false});
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// }
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// });
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// TODO Compute dynamically
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this.setSharedWidth(500);
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// Create layout and controls
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this.find('iframe').addClass('center');
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this.layout({type: 'border'});
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this.find('iframe').bind('load', function() {
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self._fixIframeLinks();
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self.loadCurrentPage();
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});
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self._fixIframeLinks();
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var updateAfterXhr = function() {
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// var url = ui.xmlhttp.getResponseHeader('x-frontend-url');
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var url = $('.cms-edit-form').find(':input[name=StageURLSegment]').val();
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if(url) {
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self.loadUrl(url);
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self.unblock();
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} else {
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self.block();
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}
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}
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// Listen to form loads. Limit to CMS forms for the moment
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$('.cms-edit-form').bind('loadnewpage', function(e, ui) {
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updateAfterXhr();
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});
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// Listen to history state changes
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$('.cms-container').bind('afterstatechange', function(e) {
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updateAfterXhr();
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});
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// Toggle preview when new menu entry is selected
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$('.cms-menu-list li').bind('select', function(e) {
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self.collapse();
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});
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if(this.hasClass('is-expanded')) this.expand();
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else this.collapse();
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// Preview might not be available in all admin interfaces - block/disable when necessary
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this.append('<div class="cms-preview-overlay ui-widget-overlay"></div>');
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this.find('.cms-preview-overlay').hide();
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this._super();
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},
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loadUrl: function(url) {
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this.find('iframe').attr('src', url);
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},
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/**
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* Loads the matching edit form for a page viewed in the preview iframe,
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* based on metadata sent along with this document.
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*/
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loadCurrentPage: function() {
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var doc = this.find('iframe')[0].contentDocument,
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containerEl = this.getLayoutContainer(),
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contentEl = containerEl.find('.cms-content');
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// Only load if we're in the "edit page" view
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if(!contentEl.hasClass('CMSMain') || contentEl.hasClass('CMSPagesController') || contentEl.hasClass('CMSSettingsController')) return;
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// Load this page in the admin interface if appropriate
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var id = $(doc).find('meta[name=x-page-id]').attr('content'),
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editLink = $(doc).find('meta[name=x-cms-edit-link]').attr('content'),
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contentPanel = $('.cms-content');
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// TODO Remove hardcoding
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if(id && contentPanel.find(':input[name=ID]').val() != id) {
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window.History.pushState({}, '', editLink);
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}
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},
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_fixIframeLinks: function() {
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var doc = this.find('iframe')[0].contentDocument;
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// Block outside links from going anywhere
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var links = doc.getElementsByTagName('A');
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for (var i = 0; i < links.length; i++) {
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var href = links[i].getAttribute('href');
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if(!href) continue;
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// Disable external links
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if (href.match(/^http:\/\//)) links[i].setAttribute('href', 'javascript:false');
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}
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},
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expand: function() {
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var self = this, containerEl = this.getLayoutContainer(), contentEl = containerEl.find('.cms-content');
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this.removeClass('east').addClass('center').removeClass('is-collapsed');
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// this.css('overflow', 'auto');
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contentEl.removeClass('center').hide();
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this.find('iframe').show();
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this.find('.cms-preview-toggle a').html('»');
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this.find('.cms-preview-controls').show();
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containerEl.find('.cms-menu').collapsePanel();
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// Already triggered through panel toggle above
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// containerEl.redraw();
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},
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collapse: function() {
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var self = this, containerEl = this.getLayoutContainer(), contentEl = containerEl.find('.cms-content');
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this.addClass('east').removeClass('center').addClass('is-collapsed').width(10);
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// this.css('overflow', 'hidden');
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contentEl.addClass('center').show();
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this.find('iframe').hide();
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this.find('.cms-preview-toggle a').html('«');
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this.find('.cms-preview-controls').hide();
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containerEl.find('.cms-menu').expandPanel();
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// Already triggered through panel toggle above
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// containerEl.redraw();
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},
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block: function() {
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this.addClass('blocked');
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},
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unblock: function() {
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this.removeClass('blocked');
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},
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getLayoutContainer: function() {
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return this.parents('.cms-container');
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},
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toggle: function(bool) {
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this[this.hasClass('is-collapsed') ? 'expand' : 'collapse']();
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},
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redraw: function() {
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this.layout();
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}
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});
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$('.cms-preview.collapsed').entwine({
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onmatch: function() {
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this.find('a').text('<');
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}
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});
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$('.cms-preview.blocked').entwine({
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onmatch: function() {
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this.find('.cms-preview-overlay').show();
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},
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onunmatch: function() {
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this.find('.cms-preview-overlay').hide();
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}
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});
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$('.cms-preview.expanded').entwine({
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onmatch: function() {
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this.find('a').text('>');
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}
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});
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$('.cms-preview .cms-preview-toggle').entwine({
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onclick: function(e) {
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e.preventDefault();
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this.parents('.cms-preview').toggle();
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}
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});
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$('.cms-switch-view a').entwine({
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onclick: function(e) {
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e.preventDefault();
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var preview = $('.cms-preview');
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preview.toggle(true);
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preview.loadUrl($(e.target).attr('href'));
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}
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});
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$('.cms-menu li').entwine({
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onclick: function(e) {
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// Prevent reloading of interface when opening the edit panel
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if(this.hasClass('Menu-CMSMain')) {
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var preview = $('.cms-preview');
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preview.toggle(true);
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e.preventDefault();
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}
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}
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});
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$('.cms-preview .cms-preview-states').entwine({
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onmatch: function() {
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this.find('a').addClass('ss-ui-button');
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this.find('.active a').addClass('ui-state-highlight');
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}
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});
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$('.cms-preview .cms-preview-states a').entwine({
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onclick: function(e) {
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e.preventDefault();
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this.parents('.cms-preview').loadUrl(this.attr('href'));
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this.addClass('ui-state-highlight');
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this.parents('.cms-preview-states').find('a').not(this).removeClass('ui-state-highlight');
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}
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});
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$('.cms-preview-toggle-link').entwine({
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onclick: function(e) {
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e.preventDefault();
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$('.cms-preview').toggle();
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}
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});
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});
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}(jQuery)); |