2
YUI 3.10.3 (build 2fb5187)
3
Copyright 2013 Yahoo! Inc. All rights reserved.
4
Licensed under the BSD License.
5
http://yuilibrary.com/license/
8
YUI.add('datatable-head', function (Y, NAME) {
11
View class responsible for rendering the `<thead>` section of a table. Used as
12
the default `headerView` for `Y.DataTable.Base` and `Y.DataTable` classes.
15
@submodule datatable-head
19
fromTemplate = Lang.sub,
20
isArray = Lang.isArray,
24
View class responsible for rendering the `<thead>` section of a table. Used as
25
the default `headerView` for `Y.DataTable.Base` and `Y.DataTable` classes.
27
Translates the provided array of column configuration objects into a rendered
28
`<thead>` based on the data in those objects.
31
The structure of the column data is expected to be a single array of objects,
32
where each object corresponds to a `<th>`. Those objects may contain a
33
`children` property containing a similarly structured array to indicate the
34
nested cells should be grouped under the parent column's colspan in a separate
35
row of header cells. E.g.
38
new Y.DataTable.HeaderView({
41
{ key: 'id' }, // no nesting
42
{ key: 'name', children: [
43
{ key: 'firstName', label: 'First' },
44
{ key: 'lastName', label: 'Last' } ] }
49
This would translate to the following visualization:
59
Supported properties of the column objects include:
61
* `label` - The HTML content of the header cell.
62
* `key` - If `label` is not specified, the `key` is used for content.
63
* `children` - Array of columns to appear below this column in the next
65
* `headerTemplate` - Overrides the instance's `CELL_TEMPLATE` for cells in this
67
* `abbr` - The content of the 'abbr' attribute of the `<th>`
68
* `title` - The content of the 'title' attribute of the `<th>`
69
* `className` - Adds this string of CSS classes to the column header
71
Through the life of instantiation and rendering, the column objects will have
72
the following properties added to them:
74
* `id` - (Defaulted by DataTable) The id to assign the rendered column
75
* `_colspan` - To supply the `<th>` attribute
76
* `_rowspan` - To supply the `<th>` attribute
77
* `_parent` - (Added by DataTable) If the column is a child of another
78
column, this points to its parent column
80
The column object is also used to provide values for {placeholder} tokens in the
81
instance's `CELL_TEMPLATE`, so you can modify the template and include other
82
column object properties to populate them.
89
Y.namespace('DataTable').HeaderView = Y.Base.create('tableHeader', Y.View, [], {
90
// -- Instance properties -------------------------------------------------
93
Template used to create the table's header cell markup. Override this to
94
customize how header cell markup is created.
96
@property CELL_TEMPLATE
98
@default '<th id="{id}" colspan="{_colspan}" rowspan="{_rowspan}" class="{className}" scope="col" {_id}{abbr}{title}>{content}</th>'
102
'<th id="{id}" colspan="{_colspan}" rowspan="{_rowspan}" class="{className}" scope="col" {_id}{abbr}{title}>{content}</th>',
105
The data representation of the header rows to render. This is assigned by
106
parsing the `columns` configuration array, and is used by the render()
111
@default (initially unset)
114
//TODO: should this be protected?
118
Template used to create the table's header row markup. Override this to
119
customize the row markup.
121
@property ROW_TEMPLATE
123
@default '<tr>{content}</tr>'
127
'<tr>{content}</tr>',
130
The object that serves as the source of truth for column and row data.
131
This property is assigned at instantiation from the `source` property of
132
the configuration object passed to the constructor.
136
@default (initially unset)
139
//TODO: should this be protected?
143
HTML templates used to create the `<thead>` containing the table headers.
145
@property THEAD_TEMPLATE
147
@default '<thead class="{className}">{content}</thead>'
150
THEAD_TEMPLATE: '<thead class="{className}"></thead>',
152
// -- Public methods ------------------------------------------------------
155
Returns the generated CSS classname based on the input. If the `host`
156
attribute is configured, it will attempt to relay to its `getClassName`
157
or use its static `NAME` property as a string base.
159
If `host` is absent or has neither method nor `NAME`, a CSS classname
160
will be generated using this class's `NAME`.
163
@param {String} token* Any number of token strings to assemble the
168
getClassName: function () {
169
// TODO: add attribute with setter? to host to use property this.host
171
var host = this.host,
172
NAME = (host && host.constructor.NAME) ||
173
this.constructor.NAME;
175
if (host && host.getClassName) {
176
return host.getClassName.apply(host, arguments);
178
return Y.ClassNameManager.getClassName
179
.apply(Y.ClassNameManager,
180
[NAME].concat(toArray(arguments, 0, true)));
185
Creates the `<thead>` Node content by assembling markup generated by
186
populating the `ROW_TEMPLATE` and `CELL_TEMPLATE` templates with content
187
from the `columns` property.
190
@return {HeaderView} The instance
194
render: function () {
195
var table = this.get('container'),
196
thead = this.theadNode ||
197
(this.theadNode = this._createTHeadNode()),
198
columns = this.columns,
205
i, len, j, jlen, col, html, content, values;
207
if (thead && columns) {
210
if (columns.length) {
211
for (i = 0, len = columns.length; i < len; ++i) {
214
for (j = 0, jlen = columns[i].length; j < jlen; ++j) {
219
className: this.getClassName('header'),
220
content : col.label || col.key ||
221
("Column " + (j + 1))
225
values._id = col._id ?
226
' data-yui3-col-id="' + col._id + '"' : '';
229
values.abbr = ' abbr="' + col.abbr + '"';
233
values.title = ' title="' + col.title + '"';
237
values.className += ' ' + col.className;
241
values.className += ' ' + this.getClassName('first', 'header');
246
' ' + this.getClassName('col', col._id);
249
content += fromTemplate(
250
col.headerTemplate || this.CELL_TEMPLATE, values);
253
html += fromTemplate(this.ROW_TEMPLATE, {
261
if (thead.get('parentNode') !== table) {
262
table.insertBefore(thead, table.one('tfoot, tbody'));
271
// -- Protected and private properties and methods ------------------------
274
Handles changes in the source's columns attribute. Redraws the headers.
276
@method _afterColumnsChange
277
@param {EventFacade} e The `columnsChange` event object
281
_afterColumnsChange: function (e) {
282
this.columns = this._parseColumns(e.newVal);
288
Binds event subscriptions from the UI and the source (if assigned).
294
bindUI: function () {
295
if (!this._eventHandles.columnsChange) {
296
// TODO: How best to decouple this?
297
this._eventHandles.columnsChange =
298
this.after('columnsChange',
299
Y.bind('_afterColumnsChange', this));
304
Creates the `<thead>` node that will store the header rows and cells.
306
@method _createTHeadNode
311
_createTHeadNode: function () {
312
return Y.Node.create(fromTemplate(this.THEAD_TEMPLATE, {
313
className: this.getClassName('columns')
318
Destroys the instance.
324
destructor: function () {
325
(new Y.EventHandle(Y.Object.values(this._eventHandles))).detach();
329
Holds the event subscriptions needing to be detached when the instance is
332
@property _eventHandles
334
@default undefined (initially unset)
338
//_eventHandles: null,
341
Initializes the instance. Reads the following configuration properties:
343
* `columns` - (REQUIRED) The initial column information
344
* `host` - The object to serve as source of truth for column info
347
@param {Object} config Configuration data
351
initializer: function (config) {
352
this.host = config.host;
353
this.columns = this._parseColumns(config.columns);
355
this._eventHandles = [];
359
Translate the input column format into a structure useful for rendering a
360
`<thead>`, rows, and cells. The structure of the input is expected to be a
361
single array of objects, where each object corresponds to a `<th>`. Those
362
objects may contain a `children` property containing a similarly structured
363
array to indicate the nested cells should be grouped under the parent
364
column's colspan in a separate row of header cells. E.g.
368
{ key: 'id' }, // no nesting
369
{ key: 'name', children: [
370
{ key: 'firstName', label: 'First' },
371
{ key: 'lastName', label: 'Last' } ] }
375
would indicate two header rows with the first column 'id' being assigned a
376
`rowspan` of `2`, the 'name' column appearing in the first row with a
377
`colspan` of `2`, and the 'firstName' and 'lastName' columns appearing in
378
the second row, below the 'name' column.
381
---------------------
384
| id | First | Last |
385
---------------------
388
Supported properties of the column objects include:
390
* `label` - The HTML content of the header cell.
391
* `key` - If `label` is not specified, the `key` is used for content.
392
* `children` - Array of columns to appear below this column in the next
394
* `abbr` - The content of the 'abbr' attribute of the `<th>`
395
* `title` - The content of the 'title' attribute of the `<th>`
396
* `headerTemplate` - Overrides the instance's `CELL_TEMPLATE` for cells
399
The output structure is basically a simulation of the `<thead>` structure
400
with arrays for rows and objects for cells. Column objects have the
401
following properties added to them:
403
* `id` - (Defaulted by DataTable) The id to assign the rendered
405
* `_colspan` - Per the `<th>` attribute
406
* `_rowspan` - Per the `<th>` attribute
407
* `_parent` - (Added by DataTable) If the column is a child of another
408
column, this points to its parent column
410
The column object is also used to provide values for {placeholder}
411
replacement in the `CELL_TEMPLATE`, so you can modify the template and
412
include other column object properties to populate them.
414
@method _parseColumns
415
@param {Object[]} data Array of column object data
416
@return {Array[]} An array of arrays corresponding to the header row
421
_parseColumns: function (data) {
425
entry, row, col, children, parent, i, len, j;
427
if (isArray(data) && data.length) {
428
// don't modify the input array
431
// First pass, assign colspans and calculate row count for
432
// non-nested headers' rowspan
433
stack.push([data, -1]);
435
while (stack.length) {
436
entry = stack[stack.length - 1];
440
for (len = row.length; i < len; ++i) {
441
row[i] = col = Y.merge(row[i]);
442
children = col.children;
450
if (isArray(children) && children.length) {
451
stack.push([children, -1]);
454
rowSpan = Math.max(rowSpan, stack.length);
456
// break to let the while loop process the children
464
// All columns in this row are processed
465
if (stack.length > 1) {
466
entry = stack[stack.length - 2];
467
parent = entry[0][entry[1]];
471
for (i = 0, len = row.length; i < len; ++i) {
472
// Can't use .length because in 3+ rows, colspan
473
// needs to aggregate the colspans of children
474
row[i]._parent = parent;
475
parent._colspan += row[i]._colspan;
482
// Second pass, build row arrays and assign rowspan
483
for (i = 0; i < rowSpan; ++i) {
487
stack.push([data, -1]);
489
while (stack.length) {
490
entry = stack[stack.length - 1];
494
for (len = row.length; i < len; ++i) {
496
children = col.children;
498
columns[stack.length - 1].push(col);
502
// collect the IDs of parent cols
503
col._headers = [col.id];
505
for (j = stack.length - 2; j >= 0; --j) {
506
parent = stack[j][0][stack[j][1]];
508
col._headers.unshift(parent.id);
511
if (children && children.length) {
512
// parent cells must assume rowspan 1 (long story)
514
// break to let the while loop process the children
515
stack.push([children, -1]);
518
col._rowspan = rowSpan - stack.length + 1;
523
// All columns in this row are processed
529
for (i = 0, len = columns.length; i < len; i += col._rowspan) {
540
}, '3.10.3', {"requires": ["datatable-core", "view", "classnamemanager"]});