diff -r 000000000000 -r bca7a7e058a3 src/pyams_skin/resources/js/ext/tinymce/dev/classes/ui/TabPanel.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/pyams_skin/resources/js/ext/tinymce/dev/classes/ui/TabPanel.js	Thu Feb 13 11:43:31 2020 +0100
@@ -0,0 +1,177 @@
+/**
+ * TabPanel.js
+ *
+ * Copyright, Moxiecode Systems AB
+ * Released under LGPL License.
+ *
+ * License: http://www.tinymce.com/license
+ * Contributing: http://www.tinymce.com/contributing
+ */
+
+/**
+ * Creates a tab panel control.
+ *
+ * @-x-less TabPanel.less
+ * @class tinymce.ui.TabPanel
+ * @extends tinymce.ui.Panel
+ *
+ * @setting {Number} activeTab Active tab index.
+ */
+define("tinymce/ui/TabPanel", [
+	"tinymce/ui/Panel",
+	"tinymce/ui/DomUtils"
+], function(Panel, DomUtils) {
+	"use strict";
+
+	return Panel.extend({
+		Defaults: {
+			layout: 'absolute',
+			defaults: {
+				type: 'panel'
+			}
+		},
+
+		/**
+		 * Activates the specified tab by index.
+		 *
+		 * @method activateTab
+		 * @param {Number} idx Index of the tab to activate.
+		 */
+		activateTab: function(idx) {
+			var activeTabElm;
+
+			if (this.activeTabId) {
+				activeTabElm = this.getEl(this.activeTabId);
+				DomUtils.removeClass(activeTabElm, this.classPrefix + 'active');
+				activeTabElm.setAttribute('aria-selected', "false");
+			}
+
+			this.activeTabId = 't' + idx;
+
+			activeTabElm = this.getEl('t' + idx);
+			activeTabElm.setAttribute('aria-selected', "true");
+			DomUtils.addClass(activeTabElm, this.classPrefix + 'active');
+
+			this.items()[idx].show().fire('showtab');
+			this.reflow();
+
+			this.items().each(function(item, i) {
+				if (idx != i) {
+					item.hide();
+				}
+			});
+		},
+
+		/**
+		 * Renders the control as a HTML string.
+		 *
+		 * @method renderHtml
+		 * @return {String} HTML representing the control.
+		 */
+		renderHtml: function() {
+			var self = this, layout = self._layout, tabsHtml = '', prefix = self.classPrefix;
+
+			self.preRender();
+			layout.preRender(self);
+
+			self.items().each(function(ctrl, i) {
+				var id = self._id + '-t' + i;
+
+				ctrl.aria('role', 'tabpanel');
+				ctrl.aria('labelledby', id);
+
+				tabsHtml += (
+					'<div id="' + id + '" class="' + prefix + 'tab" ' +
+						'unselectable="on" role="tab" aria-controls="' + ctrl._id + '" aria-selected="false" tabIndex="-1">' +
+						self.encode(ctrl.settings.title) +
+					'</div>'
+				);
+			});
+
+			return (
+				'<div id="' + self._id + '" class="' + self.classes() + '" hidefocus="1" tabindex="-1">' +
+					'<div id="' + self._id + '-head" class="' + prefix + 'tabs" role="tablist">' +
+						tabsHtml +
+					'</div>' +
+					'<div id="' + self._id + '-body" class="' + self.classes('body') + '">' +
+						layout.renderHtml(self) +
+					'</div>' +
+				'</div>'
+			);
+		},
+
+		/**
+		 * Called after the control has been rendered.
+		 *
+		 * @method postRender
+		 */
+		postRender: function() {
+			var self = this;
+
+			self._super();
+
+			self.settings.activeTab = self.settings.activeTab || 0;
+			self.activateTab(self.settings.activeTab);
+
+			this.on('click', function(e) {
+				var targetParent = e.target.parentNode;
+
+				if (e.target.parentNode.id == self._id + '-head') {
+					var i = targetParent.childNodes.length;
+
+					while (i--) {
+						if (targetParent.childNodes[i] == e.target) {
+							self.activateTab(i);
+						}
+					}
+				}
+			});
+		},
+
+		/**
+		 * Initializes the current controls layout rect.
+		 * This will be executed by the layout managers to determine the
+		 * default minWidth/minHeight etc.
+		 *
+		 * @method initLayoutRect
+		 * @return {Object} Layout rect instance.
+		 */
+		initLayoutRect: function() {
+			var self = this, rect, minW, minH;
+
+			minW = DomUtils.getSize(self.getEl('head')).width;
+			minW = minW < 0 ? 0 : minW;
+			minH = 0;
+
+			self.items().each(function(item) {
+				minW = Math.max(minW, item.layoutRect().minW);
+				minH = Math.max(minH, item.layoutRect().minH);
+			});
+
+			self.items().each(function(ctrl) {
+				ctrl.settings.x = 0;
+				ctrl.settings.y = 0;
+				ctrl.settings.w = minW;
+				ctrl.settings.h = minH;
+
+				ctrl.layoutRect({
+					x: 0,
+					y: 0,
+					w: minW,
+					h: minH
+				});
+			});
+
+			var headH = DomUtils.getSize(self.getEl('head')).height;
+
+			self.settings.minWidth = minW;
+			self.settings.minHeight = minH + headH;
+
+			rect = self._super();
+			rect.deltaH += headH;
+			rect.innerH = rect.h - rect.deltaH;
+
+			return rect;
+		}
+	});
+});