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/**
* @file toolbar.js
*
* Defines the behavior of the Drupal administration toolbar.
*/
(function ($, Drupal, drupalSettings) {
"use strict";
// Merge run-time settings with the defaults.
var options = $.extend(
{
breakpoints: {
'module.toolbar.narrow': '',
'module.toolbar.standard': '',
'module.toolbar.wide': ''
}
},
drupalSettings.toolbar,
// Merge strings on top of drupalSettings so that they are not mutable.
{
strings: {
horizontal: Drupal.t('Horizontal orientation'),
vertical: Drupal.t('Vertical orientation')
}
}
);
/**
* Registers tabs with the toolbar.
*
* The Drupal toolbar allows modules to register top-level tabs. These may point
* directly to a resource or toggle the visibility of a tray.
*
* Modules register tabs with hook_toolbar().
*/
Drupal.behaviors.toolbar = {
attach: function (context) {
// Verify that the user agent understands media queries. Complex admin
// toolbar layouts require media query support.
if (!window.matchMedia('only screen').matches) {
return;
}
// Process the administrative toolbar.
$(context).find('#toolbar-administration').once('toolbar', function () {
// Establish the toolbar models and views.
var model = Drupal.toolbar.models.toolbarModel = new Drupal.toolbar.ToolbarModel({
locked: JSON.parse(localStorage.getItem('Drupal.toolbar.trayVerticalLocked')) || false,
activeTab: document.getElementById(JSON.parse(localStorage.getItem('Drupal.toolbar.activeTabID')))
});
Drupal.toolbar.views.toolbarVisualView = new Drupal.toolbar.ToolbarVisualView({
el: this,
model: model,
strings: options.strings
});
Drupal.toolbar.views.toolbarAuralView = new Drupal.toolbar.ToolbarAuralView({
el: this,
model: model,
strings: options.strings
});
Drupal.toolbar.views.bodyVisualView = new Drupal.toolbar.BodyVisualView({
el: this,
model: model
});
// Render collapsible menus.
var menuModel = Drupal.toolbar.models.menuModel = new Drupal.toolbar.MenuModel();
Drupal.toolbar.views.menuVisualView = new Drupal.toolbar.MenuVisualView({
el: $(this).find('.toolbar-menu-administration').get(0),
model: menuModel,
strings: options.strings
});
// Handle the resolution of Drupal.toolbar.setSubtrees.
// This is handled with a deferred so that the function may be invoked
// asynchronously.
Drupal.toolbar.setSubtrees.done(function (subtrees) {
menuModel.set('subtrees', subtrees);
localStorage.setItem('Drupal.toolbar.subtrees', JSON.stringify(subtrees));
// Indicate on the toolbarModel that subtrees are now loaded.
model.set('areSubtreesLoaded', true);
});
// Attach a listener to the configured media query breakpoints.
for (var label in options.breakpoints) {
if (options.breakpoints.hasOwnProperty(label)) {
var mq = options.breakpoints[label];
var mql = Drupal.toolbar.mql[label] = window.matchMedia(mq);
// Curry the model and the label of the media query breakpoint to the
// mediaQueryChangeHandler function.
mql.addListener(Drupal.toolbar.mediaQueryChangeHandler.bind(null, model, label));
// Fire the mediaQueryChangeHandler for each configured breakpoint
// so that they process once.
Drupal.toolbar.mediaQueryChangeHandler.call(null, model, label, mql);
}
}
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// Trigger an initial attempt to load menu subitems. This first attempt
// is made after the media query handlers have had an opportunity to
// process. The toolbar starts in the vertical orientation by default,
// unless the viewport is wide enough to accommodate a horizontal
// orientation. Thus we give the Toolbar a chance to determine if it
// should be set to horizontal orientation before attempting to load menu
// subtrees.
Drupal.toolbar.views.toolbarVisualView.loadSubtrees();
$(document)
// Update the model when the viewport offset changes.
.on('drupalViewportOffsetChange.toolbar', function (event, offsets) {
model.set('offsets', offsets);
});
// Broadcast model changes to other modules.
model
.on('change:orientation', function (model, orientation) {
$(document).trigger('drupalToolbarOrientationChange', orientation);
})
.on('change:activeTab', function (model, tab) {
$(document).trigger('drupalToolbarTabChange', tab);
})
.on('change:activeTray', function (model, tray) {
$(document).trigger('drupalToolbarTrayChange', tray);
});
});
}
};
/**
* Toolbar methods of Backbone objects.
*/
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Drupal.toolbar = {
// A hash of View instances.
views: {},
// A hash of Model instances.
models: {},
// A hash of MediaQueryList objects tracked by the toolbar.
mql: {},
/**
* Accepts a list of subtree menu elements.
*
* A deferred object that is resolved by an inlined JavaScript callback.
*
* JSONP callback.
* @see toolbar_subtrees_jsonp().
*/
setSubtrees: new $.Deferred(),
/**
* Respond to configured narrow media query changes.
*/
mediaQueryChangeHandler: function (model, label, mql) {
switch (label) {
case 'module.toolbar.narrow':
model.set({
'isOriented': mql.matches,
'isTrayToggleVisible': false
});
// If the toolbar doesn't have an explicit orientation yet, or if the
// narrow media query doesn't match then set the orientation to
// vertical.
if (!mql.matches || !model.get('orientation')) {
model.set({'orientation': 'vertical'}, {validate: true});
}
break;
case 'module.toolbar.standard':
model.set({
'isFixed': mql.matches
});
break;
case 'module.toolbar.wide':
model.set({
'orientation': ((mql.matches) ? 'horizontal' : 'vertical')
}, {validate: true});
// The tray orientation toggle visibility does not need to be validated.
model.set({
'isTrayToggleVisible': mql.matches
});
break;
default:
break;
}
}
};
/**
* A toggle is an interactive element often bound to a click handler.
*
* @return {String}
* A string representing a DOM fragment.
*/
Drupal.theme.toolbarOrientationToggle = function () {
return '<div class="toolbar-toggle-orientation"><div class="toolbar-lining">' +
'<button class="toolbar-icon" type="button"></button>' +
'</div></div>';
};
}(jQuery, Drupal, drupalSettings));