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
|
/**
* DO NOT EDIT THIS FILE.
* See the following change record for more information,
* https://www.drupal.org/node/2815083
* @preserve
**/
(function ($, Drupal, displace) {
function TableHeader(table) {
var $table = $(table);
this.$originalTable = $table;
this.$originalHeader = $table.children('thead');
this.$originalHeaderCells = this.$originalHeader.find('> tr > th');
this.displayWeight = null;
this.$originalTable.addClass('sticky-table');
this.tableHeight = $table[0].clientHeight;
this.tableOffset = this.$originalTable.offset();
this.$originalTable.on('columnschange', {
tableHeader: this
}, function (e, display) {
var tableHeader = e.data.tableHeader;
if (tableHeader.displayWeight === null || tableHeader.displayWeight !== display) {
tableHeader.recalculateSticky();
}
tableHeader.displayWeight = display;
});
this.createSticky();
}
function forTables(method, arg) {
var tables = TableHeader.tables;
var il = tables.length;
for (var i = 0; i < il; i++) {
tables[i][method](arg);
}
}
function tableHeaderInitHandler(e) {
var $tables = $(e.data.context).find('table.sticky-enabled').once('tableheader');
var il = $tables.length;
for (var i = 0; i < il; i++) {
TableHeader.tables.push(new TableHeader($tables[i]));
}
forTables('onScroll');
}
Drupal.behaviors.tableHeader = {
attach: function attach(context) {
$(window).one('scroll.TableHeaderInit', {
context: context
}, tableHeaderInitHandler);
}
};
function scrollValue(position) {
return document.documentElement[position] || document.body[position];
}
function tableHeaderResizeHandler(e) {
forTables('recalculateSticky');
}
function tableHeaderOnScrollHandler(e) {
forTables('onScroll');
}
function tableHeaderOffsetChangeHandler(e, offsets) {
forTables('stickyPosition', offsets.top);
}
$(window).on({
'resize.TableHeader': tableHeaderResizeHandler,
'scroll.TableHeader': tableHeaderOnScrollHandler
});
$(document).on({
'columnschange.TableHeader': tableHeaderResizeHandler,
'drupalViewportOffsetChange.TableHeader': tableHeaderOffsetChangeHandler
});
$.extend(TableHeader, {
tables: []
});
$.extend(TableHeader.prototype, {
minHeight: 100,
tableOffset: null,
tableHeight: null,
stickyVisible: false,
createSticky: function createSticky() {
var $stickyHeader = this.$originalHeader.clone(true);
this.$stickyTable = $('<table class="sticky-header"/>').css({
visibility: 'hidden',
position: 'fixed',
top: '0px'
}).append($stickyHeader).insertBefore(this.$originalTable);
this.$stickyHeaderCells = $stickyHeader.find('> tr > th');
this.recalculateSticky();
},
stickyPosition: function stickyPosition(offsetTop, offsetLeft) {
var css = {};
if (typeof offsetTop === 'number') {
css.top = "".concat(offsetTop, "px");
}
if (typeof offsetLeft === 'number') {
css.left = "".concat(this.tableOffset.left - offsetLeft, "px");
}
return this.$stickyTable.css(css);
},
checkStickyVisible: function checkStickyVisible() {
var scrollTop = scrollValue('scrollTop');
var tableTop = this.tableOffset.top - displace.offsets.top;
var tableBottom = tableTop + this.tableHeight;
var visible = false;
if (tableTop < scrollTop && scrollTop < tableBottom - this.minHeight) {
visible = true;
}
this.stickyVisible = visible;
return visible;
},
onScroll: function onScroll(e) {
this.checkStickyVisible();
this.stickyPosition(null, scrollValue('scrollLeft'));
this.$stickyTable.css('visibility', this.stickyVisible ? 'visible' : 'hidden');
},
recalculateSticky: function recalculateSticky(event) {
this.tableHeight = this.$originalTable[0].clientHeight;
displace.offsets.top = displace.calculateOffset('top');
this.tableOffset = this.$originalTable.offset();
this.stickyPosition(displace.offsets.top, scrollValue('scrollLeft'));
var $that = null;
var $stickyCell = null;
var display = null;
var il = this.$originalHeaderCells.length;
for (var i = 0; i < il; i++) {
$that = $(this.$originalHeaderCells[i]);
$stickyCell = this.$stickyHeaderCells.eq($that.index());
display = $that.css('display');
if (display !== 'none') {
$stickyCell.css({
width: $that.css('width'),
display: display
});
} else {
$stickyCell.css('display', 'none');
}
}
this.$stickyTable.css('width', this.$originalTable.outerWidth());
}
});
Drupal.TableHeader = TableHeader;
})(jQuery, Drupal, window.Drupal.displace);
|
