1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
|
/**
* @file
* Builds a nested accordion widget.
*
* Invoke on an HTML list element with the jQuery plugin pattern.
*
* @example
* $('.toolbar-menu').drupalToolbarMenu();
*/
(function ($, Drupal, drupalSettings) {
/**
* Store the open menu tray.
*/
let activeItem = Drupal.url(drupalSettings.path.currentPath);
$.fn.drupalToolbarMenu = function () {
const ui = {
handleOpen: Drupal.t('Extend'),
handleClose: Drupal.t('Collapse'),
};
/**
* Toggle the open/close state of a list is a menu.
*
* @param {jQuery} $item
* The li item to be toggled.
*
* @param {Boolean} switcher
* A flag that forces toggleClass to add or a remove a class, rather than
* simply toggling its presence.
*/
function toggleList($item, switcher) {
const $toggle = $item
.children('.toolbar-box')
.children('.toolbar-handle');
switcher =
typeof switcher !== 'undefined' ? switcher : !$item.hasClass('open');
// Toggle the item open state.
$item.toggleClass('open', switcher);
// Twist the toggle.
$toggle.toggleClass('open', switcher);
// Adjust the toggle text.
$toggle.find('.action').each((index, element) => {
// Expand Structure, Collapse Structure.
element.textContent = switcher ? ui.handleClose : ui.handleOpen;
});
}
/**
* Handle clicks from the disclosure button on an item with sub-items.
*
* @param {Object} event
* A jQuery Event object.
*/
function toggleClickHandler(event) {
const $toggle = $(event.target);
const $item = $toggle.closest('li');
// Toggle the list item.
toggleList($item);
// Close open sibling menus.
const $openItems = $item.siblings().filter('.open');
toggleList($openItems, false);
}
/**
* Handle clicks from a menu item link.
*
* @param {Object} event
* A jQuery Event object.
*/
function linkClickHandler(event) {
// If the toolbar is positioned fixed (and therefore hiding content
// underneath), then users expect clicks in the administration menu tray
// to take them to that destination but for the menu tray to be closed
// after clicking: otherwise the toolbar itself is obstructing the view
// of the destination they chose.
if (!Drupal.toolbar.models.toolbarModel.get('isFixed')) {
Drupal.toolbar.models.toolbarModel.set('activeTab', null);
}
// Stopping propagation to make sure that once a toolbar-box is clicked
// (the whitespace part), the page is not redirected anymore.
event.stopPropagation();
}
/**
* Add markup to the menu elements.
*
* Items with sub-elements have a list toggle attached to them. Menu item
* links and the corresponding list toggle are wrapped with in a div
* classed with .toolbar-box. The .toolbar-box div provides a positioning
* context for the item list toggle.
*
* @param {jQuery} $menu
* The root of the menu to be initialized.
*/
function initItems($menu) {
const options = {
class: 'toolbar-icon toolbar-handle',
action: ui.handleOpen,
text: '',
};
// Initialize items and their links.
$menu.find('li > a').wrap('<div class="toolbar-box">');
// Add a handle to each list item if it has a menu.
$menu.find('li').each((index, element) => {
const $item = $(element);
if ($item.children('ul.toolbar-menu').length) {
const $box = $item.children('.toolbar-box');
const $link = $box.find('a');
options.text = Drupal.t('@label', {
'@label': $link.length ? $link[0].textContent : '',
});
$item
.children('.toolbar-box')
.append(Drupal.theme('toolbarMenuItemToggle', options));
}
});
}
/**
* Adds a level class to each list based on its depth in the menu.
*
* This function is called recursively on each sub level of lists elements
* until the depth of the menu is exhausted.
*
* @param {jQuery} $lists
* A jQuery object of ul elements.
*
* @param {number} level
* The current level number to be assigned to the list elements.
*/
function markListLevels($lists, level) {
level = !level ? 1 : level;
const $lis = $lists.children('li').addClass(`level-${level}`);
$lists = $lis.children('ul');
if ($lists.length) {
markListLevels($lists, level + 1);
}
}
/**
* On page load, open the active menu item.
*
* Marks the trail of the active link in the menu back to the root of the
* menu with .menu-item--active-trail.
*
* @param {jQuery} $menu
* The root of the menu.
*/
function openActiveItem($menu) {
const pathItem = $menu.find(`a[href="${window.location.pathname}"]`);
if (pathItem.length && !activeItem) {
activeItem = window.location.pathname;
}
if (activeItem) {
const $activeItem = $menu
.find(`a[href="${activeItem}"]`)
.addClass('menu-item--active');
const $activeTrail = $activeItem
.parentsUntil('.root', 'li')
.addClass('menu-item--active-trail');
toggleList($activeTrail, true);
}
}
// Return the jQuery object.
return this.each(function (selector) {
const menu = once('toolbar-menu', this);
if (menu.length) {
const $menu = $(menu);
// Bind event handlers.
$menu
.on('click.toolbar', '.toolbar-box', toggleClickHandler)
.on('click.toolbar', '.toolbar-box a', linkClickHandler);
$menu.addClass('root');
initItems($menu);
markListLevels($menu);
// Restore previous and active states.
openActiveItem($menu);
}
});
};
/**
* A toggle is an interactive element often bound to a click handler.
*
* @param {object} options
* Options for the button.
* @param {string} options.class
* Class to set on the button.
* @param {string} options.action
* Action for the button.
* @param {string} options.text
* Used as label for the button.
*
* @return {string}
* A string representing a DOM fragment.
*/
Drupal.theme.toolbarMenuItemToggle = function (options) {
return `<button class="${options.class}"><span class="action">${options.action}</span> <span class="label">${options.text}</span></button>`;
};
})(jQuery, Drupal, drupalSettings);
|
