--- /dev/null
+/**
+ * @file
+ * A Backbone view for the toolbar element. Listens to mouse & touch.
+ */
+
+(function ($, Drupal, drupalSettings, Backbone) {
+
+ 'use strict';
+
+ Drupal.toolbar.ToolbarVisualView = Backbone.View.extend(/** @lends Drupal.toolbar.ToolbarVisualView# */{
+
+ /**
+ * Event map for the `ToolbarVisualView`.
+ *
+ * @return {object}
+ * A map of events.
+ */
+ events: function () {
+ // Prevents delay and simulated mouse events.
+ var touchEndToClick = function (event) {
+ event.preventDefault();
+ event.target.click();
+ };
+
+ return {
+ 'click .toolbar-bar .toolbar-tab .trigger': 'onTabClick',
+ 'click .toolbar-toggle-orientation button': 'onOrientationToggleClick',
+ 'touchend .toolbar-bar .toolbar-tab .trigger': touchEndToClick,
+ 'touchend .toolbar-toggle-orientation button': touchEndToClick
+ };
+ },
+
+ /**
+ * Backbone view for the toolbar element. Listens to mouse & touch.
+ *
+ * @constructs
+ *
+ * @augments Backbone.View
+ *
+ * @param {object} options
+ * Options for the view object.
+ * @param {object} options.strings
+ * Various strings to use in the view.
+ */
+ initialize: function (options) {
+ this.strings = options.strings;
+
+ this.listenTo(this.model, 'change:activeTab change:orientation change:isOriented change:isTrayToggleVisible', this.render);
+ this.listenTo(this.model, 'change:mqMatches', this.onMediaQueryChange);
+ this.listenTo(this.model, 'change:offsets', this.adjustPlacement);
+
+ // Add the tray orientation toggles.
+ this.$el
+ .find('.toolbar-tray .toolbar-lining')
+ .append(Drupal.theme('toolbarOrientationToggle'));
+
+ // Trigger an activeTab change so that listening scripts can respond on
+ // page load. This will call render.
+ this.model.trigger('change:activeTab');
+ },
+
+ /**
+ * @inheritdoc
+ *
+ * @return {Drupal.toolbar.ToolbarVisualView}
+ * The `ToolbarVisualView` instance.
+ */
+ render: function () {
+ this.updateTabs();
+ this.updateTrayOrientation();
+ this.updateBarAttributes();
+ // Load the subtrees if the orientation of the toolbar is changed to
+ // vertical. This condition responds to the case that the toolbar switches
+ // from horizontal to vertical orientation. The toolbar starts in a
+ // vertical orientation by default and then switches to horizontal during
+ // initialization if the media query conditions are met. Simply checking
+ // that the orientation is vertical here would result in the subtrees
+ // always being loaded, even when the toolbar initialization ultimately
+ // results in a horizontal orientation.
+ //
+ // @see Drupal.behaviors.toolbar.attach() where admin menu subtrees
+ // loading is invoked during initialization after media query conditions
+ // have been processed.
+ if (this.model.changed.orientation === 'vertical' || this.model.changed.activeTab) {
+ this.loadSubtrees();
+ }
+ // Trigger a recalculation of viewport displacing elements. Use setTimeout
+ // to ensure this recalculation happens after changes to visual elements
+ // have processed.
+ window.setTimeout(function () {
+ Drupal.displace(true);
+ }, 0);
+ return this;
+ },
+
+ /**
+ * Responds to a toolbar tab click.
+ *
+ * @param {jQuery.Event} event
+ * The event triggered.
+ */
+ onTabClick: function (event) {
+ // If this tab has a tray associated with it, it is considered an
+ // activatable tab.
+ if (event.target.hasAttribute('data-toolbar-tray')) {
+ var activeTab = this.model.get('activeTab');
+ var clickedTab = event.target;
+
+ // Set the event target as the active item if it is not already.
+ this.model.set('activeTab', (!activeTab || clickedTab !== activeTab) ? clickedTab : null);
+
+ event.preventDefault();
+ event.stopPropagation();
+ }
+ },
+
+ /**
+ * Toggles the orientation of a toolbar tray.
+ *
+ * @param {jQuery.Event} event
+ * The event triggered.
+ */
+ onOrientationToggleClick: function (event) {
+ var orientation = this.model.get('orientation');
+ // Determine the toggle-to orientation.
+ var antiOrientation = (orientation === 'vertical') ? 'horizontal' : 'vertical';
+ var locked = antiOrientation === 'vertical';
+ // Remember the locked state.
+ if (locked) {
+ localStorage.setItem('Drupal.toolbar.trayVerticalLocked', 'true');
+ }
+ else {
+ localStorage.removeItem('Drupal.toolbar.trayVerticalLocked');
+ }
+ // Update the model.
+ this.model.set({
+ locked: locked,
+ orientation: antiOrientation
+ }, {
+ validate: true,
+ override: true
+ });
+
+ event.preventDefault();
+ event.stopPropagation();
+ },
+
+ /**
+ * Updates the display of the tabs: toggles a tab and the associated tray.
+ */
+ updateTabs: function () {
+ var $tab = $(this.model.get('activeTab'));
+ // Deactivate the previous tab.
+ $(this.model.previous('activeTab'))
+ .removeClass('is-active')
+ .prop('aria-pressed', false);
+ // Deactivate the previous tray.
+ $(this.model.previous('activeTray'))
+ .removeClass('is-active');
+
+ // Activate the selected tab.
+ if ($tab.length > 0) {
+ $tab
+ .addClass('is-active')
+ // Mark the tab as pressed.
+ .prop('aria-pressed', true);
+ var name = $tab.attr('data-toolbar-tray');
+ // Store the active tab name or remove the setting.
+ var id = $tab.get(0).id;
+ if (id) {
+ localStorage.setItem('Drupal.toolbar.activeTabID', JSON.stringify(id));
+ }
+ // Activate the associated tray.
+ var $tray = this.$el.find('[data-toolbar-tray="' + name + '"].toolbar-tray');
+ if ($tray.length) {
+ $tray.addClass('is-active');
+ this.model.set('activeTray', $tray.get(0));
+ }
+ else {
+ // There is no active tray.
+ this.model.set('activeTray', null);
+ }
+ }
+ else {
+ // There is no active tray.
+ this.model.set('activeTray', null);
+ localStorage.removeItem('Drupal.toolbar.activeTabID');
+ }
+ },
+
+ /**
+ * Update the attributes of the toolbar bar element.
+ */
+ updateBarAttributes: function () {
+ var isOriented = this.model.get('isOriented');
+ if (isOriented) {
+ this.$el.find('.toolbar-bar').attr('data-offset-top', '');
+ }
+ else {
+ this.$el.find('.toolbar-bar').removeAttr('data-offset-top');
+ }
+ // Toggle between a basic vertical view and a more sophisticated
+ // horizontal and vertical display of the toolbar bar and trays.
+ this.$el.toggleClass('toolbar-oriented', isOriented);
+ },
+
+ /**
+ * Updates the orientation of the active tray if necessary.
+ */
+ updateTrayOrientation: function () {
+ var orientation = this.model.get('orientation');
+ // The antiOrientation is used to render the view of action buttons like
+ // the tray orientation toggle.
+ var antiOrientation = (orientation === 'vertical') ? 'horizontal' : 'vertical';
+ // Update the orientation of the trays.
+ var $trays = this.$el.find('.toolbar-tray')
+ .removeClass('toolbar-tray-horizontal toolbar-tray-vertical')
+ .addClass('toolbar-tray-' + orientation);
+
+ // Update the tray orientation toggle button.
+ var iconClass = 'toolbar-icon-toggle-' + orientation;
+ var iconAntiClass = 'toolbar-icon-toggle-' + antiOrientation;
+ var $orientationToggle = this.$el.find('.toolbar-toggle-orientation')
+ .toggle(this.model.get('isTrayToggleVisible'));
+ $orientationToggle.find('button')
+ .val(antiOrientation)
+ .attr('title', this.strings[antiOrientation])
+ .text(this.strings[antiOrientation])
+ .removeClass(iconClass)
+ .addClass(iconAntiClass);
+
+ // Update data offset attributes for the trays.
+ var dir = document.documentElement.dir;
+ var edge = (dir === 'rtl') ? 'right' : 'left';
+ // Remove data-offset attributes from the trays so they can be refreshed.
+ $trays.removeAttr('data-offset-left data-offset-right data-offset-top');
+ // If an active vertical tray exists, mark it as an offset element.
+ $trays.filter('.toolbar-tray-vertical.is-active').attr('data-offset-' + edge, '');
+ // If an active horizontal tray exists, mark it as an offset element.
+ $trays.filter('.toolbar-tray-horizontal.is-active').attr('data-offset-top', '');
+ },
+
+ /**
+ * Sets the tops of the trays so that they align with the bottom of the bar.
+ */
+ adjustPlacement: function () {
+ var $trays = this.$el.find('.toolbar-tray');
+ if (!this.model.get('isOriented')) {
+ $trays.css('margin-top', 0);
+ $trays.removeClass('toolbar-tray-horizontal').addClass('toolbar-tray-vertical');
+ }
+ else {
+ // The toolbar container is invisible. Its placement is used to
+ // determine the container for the trays.
+ $trays.css('margin-top', this.$el.find('.toolbar-bar').outerHeight());
+ }
+ },
+
+ /**
+ * Calls the endpoint URI that builds an AJAX command with the rendered
+ * subtrees.
+ *
+ * The rendered admin menu subtrees HTML is cached on the client in
+ * localStorage until the cache of the admin menu subtrees on the server-
+ * side is invalidated. The subtreesHash is stored in localStorage as well
+ * and compared to the subtreesHash in drupalSettings to determine when the
+ * admin menu subtrees cache has been invalidated.
+ */
+ loadSubtrees: function () {
+ var $activeTab = $(this.model.get('activeTab'));
+ var orientation = this.model.get('orientation');
+ // Only load and render the admin menu subtrees if:
+ // (1) They have not been loaded yet.
+ // (2) The active tab is the administration menu tab, indicated by the
+ // presence of the data-drupal-subtrees attribute.
+ // (3) The orientation of the tray is vertical.
+ if (!this.model.get('areSubtreesLoaded') && typeof $activeTab.data('drupal-subtrees') !== 'undefined' && orientation === 'vertical') {
+ var subtreesHash = drupalSettings.toolbar.subtreesHash;
+ var theme = drupalSettings.ajaxPageState.theme;
+ var endpoint = Drupal.url('toolbar/subtrees/' + subtreesHash);
+ var cachedSubtreesHash = localStorage.getItem('Drupal.toolbar.subtreesHash.' + theme);
+ var cachedSubtrees = JSON.parse(localStorage.getItem('Drupal.toolbar.subtrees.' + theme));
+ var isVertical = this.model.get('orientation') === 'vertical';
+ // If we have the subtrees in localStorage and the subtree hash has not
+ // changed, then use the cached data.
+ if (isVertical && subtreesHash === cachedSubtreesHash && cachedSubtrees) {
+ Drupal.toolbar.setSubtrees.resolve(cachedSubtrees);
+ }
+ // Only make the call to get the subtrees if the orientation of the
+ // toolbar is vertical.
+ else if (isVertical) {
+ // Remove the cached menu information.
+ localStorage.removeItem('Drupal.toolbar.subtreesHash.' + theme);
+ localStorage.removeItem('Drupal.toolbar.subtrees.' + theme);
+ // The AJAX response's command will trigger the resolve method of the
+ // Drupal.toolbar.setSubtrees Promise.
+ Drupal.ajax({url: endpoint}).execute();
+ // Cache the hash for the subtrees locally.
+ localStorage.setItem('Drupal.toolbar.subtreesHash.' + theme, subtreesHash);
+ }
+ }
+ }
+ });
+
+}(jQuery, Drupal, drupalSettings, Backbone));
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