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/**
* @summary pfSelect for DataTables
* @description A collection of API methods providing individual row selection and select all functionality in
* DataTables using traditional HTML checkboxes. This ensures DataTables meets the Patternfly design pattern while
* maintaining accessibility.
*
* The following selection styles are supported for user interaction with DataTables:
*
* api - Selection can only be performed via the API
* multi - Multiple items can be selected
* multi+shift - a hybrid between the os style and multi
* os - Operating system style selection with complex behaviors such as ctrl/cmd, shift and an unmodified click
* single - Only a single item can be selected
*
* For details see: https://datatables.net/reference/option/select.style
*
* Note that when a selection is made, the selection results text is also updated in the toolbar. The toolbar layouts is
* expected to contain the classes as shown in the example below. Selection checkboxes are also expected to be located
* in the first column.
*
* Example:
*
*
*
*
*
*
* Rendering Engine
* Browser
*
*
*
* ...
*
*
* Note: This functionality requires the following Javascript library files to be loaded:
*
* https://cdn.datatables.net/select/1.2.0/js/dataTables.select.min.js
*/
(function (factory) {
"use strict";
if (typeof define === "function" && define.amd ) {
// AMD
define (["jquery", "datatables.net"], function ($) {
return factory ($, window, document);
});
} else if (typeof exports === "object") {
// CommonJS
module.exports = function (root, $) {
if (!root) {
root = window;
}
if (!$ || !$.fn.dataTable) {
$ = require("datatables.net")(root, $).$;
}
return factory($, root, root.document);
};
} else {
// Browser
factory(jQuery, window, document);
}
}(function ($, window, document, undefined) {
"use strict";
var DataTable = $.fn.dataTable;
var RESULTS_SELECTOR = ".table-view-pf-select-results"; // Toolbar selection results
var SELECT_ALL_SELECTOR = 'th:first-child input[type="checkbox"]'; // Default checkbox for selecting all rows
var SELECT_SELECTOR = 'td:first-child input[type="checkbox"]'; // Default checkboxes for row selection
DataTable.pfSelect = {};
/**
* Initialize
*
* @param {DataTable.Api} dt DataTable
* @private
*/
DataTable.pfSelect.init = function (dt) {
var ctx = dt.settings()[0];
var opts = (ctx.oInit.pfConfig) ? ctx.oInit.pfConfig : {};
var select = (ctx.oInit.select) ? ctx.oInit.select : {};
var style = dt.select.style();
ctx._pfSelect = {};
ctx._pfSelect.selectAllSelector = (opts.selectAllSelector !== undefined)
? opts.selectAllSelector : SELECT_ALL_SELECTOR; // Select all checkbox
ctx._pfSelect.selector = (select.selector !== undefined)
? select.selector : SELECT_SELECTOR; // Select checkbox
ctx._pfSelect.results = $(RESULTS_SELECTOR, opts.toolbarSelector); // Toolbar selection results
if (style === "api") {
// Select all checkbox
$(dt.table().container()).on("click", ctx._pfSelect.selectAllSelector, function (evt) {
evt.preventDefault();
});
// Select checkboxes
$(dt.table().container()).on("click", ctx._pfSelect.selector, function (evt) {
evt.preventDefault();
});
dt.table().on("select.dt", function () {
syncSelectCheckboxes(dt);
});
} else {
// Select all checkbox
$(dt.table().container()).on("click", ctx._pfSelect.selectAllSelector, function (evt) {
selectAllRows(dt, evt.target.checked);
});
// Select checkboxes
$(dt.table().container()).on("click", ctx._pfSelect.selector, function (evt) {
if (style !== "multi" || style !== "multi+shift") {
syncSelectCheckboxes(dt); // No need to sync checkbox selections when "multi" is used
} else {
syncSelectAllCheckbox(dt); // Still need to sync select all checkbox
}
});
}
// Sync checkbox selections when paging and filtering is applied
dt.table().on("draw.dt", function () {
syncSelectCheckboxes(dt);
});
// Initialize selected rows text
updateSelectedRowsText(dt);
};
// Local functions
/**
* Select all rows on current page
*
* @param {DataTable.Api} dt DataTable
* @param {boolean} select True to select all rows on current page, defaults to false
* @private
*/
function selectAllRows (dt, select) {
var ctx = dt.settings()[0];
// Retrieve all rows taking into account currently applied filter
var filteredRows = dt.rows({"page": "current", "search": "applied"});
// Check if style is single
if (dt.select.style() === "single") {
throw new Error("Cannot select all rows with selection style 'single'");
}
// Select rows
if (select) {
filteredRows.select();
} else {
filteredRows.deselect();
}
$(ctx._pfSelect.selector, dt.table().container()).prop("checked", select); // De/select checkboxes in view
syncSelectAllCheckbox(dt);
}
/**
* Sync select all checkbox with row selections on current page
*
* @param {DataTable.Api} dt DataTable
* @private
*/
function syncSelectAllCheckbox (dt) {
var ctx = dt.settings()[0];
// Retrieve all rows taking into account currently applied filter
var filteredRows = dt.rows({"page": "current", "search": "applied"}).flatten().length;
var selectedFilteredRows = dt.rows({"page": "current", "search": "applied", "selected": true}).flatten().length;
// De/select the select all checkbox
var selectAll = $(ctx._pfSelect.selectAllSelector, dt.table().container())[0];
if (selectAll) {
selectAll.checked = (filteredRows === selectedFilteredRows);
}
updateSelectedRowsText(dt);
}
/**
* Sync select checkboxes with row selections on current page
*
* @param {DataTable.Api} dt DataTable
* @private
*/
function syncSelectCheckboxes (dt) {
var ctx = dt.settings()[0];
$(ctx._pfSelect.selector, dt.table().container()).prop("checked", false); // Deselect all checkboxes
dt.rows({"page": "current", "search": "applied", "selected": true}).every(function (index) {
$(ctx._pfSelect.selector, dt.table().row(index).node()).prop("checked", true); // Select checkbox for selected row
});
syncSelectAllCheckbox(dt);
}
/**
* Update selection results text
*
* @param {DataTable.Api} dt DataTable
* @private
*/
function updateSelectedRowsText (dt) {
var ctx = dt.settings()[0];
var selectedRows = dt.rows({"selected": true}).flatten().length;
var totalRows = dt.rows().flatten().length;
if (ctx._pfSelect.results !== undefined && ctx._pfSelect.results.length !== 0) {
$(ctx._pfSelect.results).html("" + selectedRows + " of " +
totalRows + " selected");
}
}
// DataTables API
/**
* Select all rows on current page
*
* Example: dt.table().pfSelect.selectAllRows(true);
*
* @param {boolean} select True to select all rows on current page, defaults to false
*/
DataTable.Api.register("pfSelect.selectAllRows()", function (select) {
return this.iterator("table", function (ctx) {
selectAllRows(new DataTable.Api(ctx), select);
});
});
// DataTables creation
$(document).on("preInit.dt.dtSelect", function (e, ctx) {
if (e.namespace !== "dt") {
return;
}
DataTable.pfSelect.init(new DataTable.Api(ctx));
});
return DataTable.pfSelect;
}));