Overview for sort
The matSort and mat-sort-header are used, respectively, to add sorting state and display
to tabular data.
To add sorting behavior and styling to a set of table headers, add the <mat-sort-header> component
to each header and provide an id that will identify it. These headers should be contained within a
parent element with the matSort directive, which will emit a matSortChange event when the user
triggers sorting on the header.
Users can trigger the sort header through a mouse click or keyboard action. When this happens, the
matSort will emit a matSortChange event that contains the ID of the header triggered and the
direction to sort (asc or desc).
By default, a sort header starts its sorting at asc and then desc. Triggering the sort header
after desc will remove sorting.
To reverse the sort order for all headers, set the matSortStart to desc on the matSort
directive. To reverse the order only for a specific header, set the start input only on the header
instead.
To prevent the user from clearing the sort state from an already sorted column, set
matSortDisableClear to true on the matSort to affect all headers, or set disableClear to
true on a specific header.
If you want to prevent the user from changing the sorting order of any column, you can use the
matSortDisabled binding on the mat-sort, or the disabled on a single mat-sort-header.
When used on a mat-table header, it is not required to set a mat-sort-header id on because
by default it will use the id of the column.
The aria-label for the sort button can be set in MatSortHeaderIntl.