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875 lines
19 KiB
875 lines
19 KiB
/*! KeyTable 2.1.1
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* ©2009-2016 SpryMedia Ltd - datatables.net/license
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*/
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/**
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* @summary KeyTable
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* @description Spreadsheet like keyboard navigation for DataTables
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* @version 2.1.1
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* @file dataTables.keyTable.js
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* @author SpryMedia Ltd (www.sprymedia.co.uk)
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* @contact www.sprymedia.co.uk/contact
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* @copyright Copyright 2009-2016 SpryMedia Ltd.
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*
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* This source file is free software, available under the following license:
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* MIT license - http://datatables.net/license/mit
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*
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* This source file is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the license files for details.
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*
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* For details please refer to: http://www.datatables.net
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*/
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(function( factory ){
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if ( typeof define === 'function' && define.amd ) {
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// AMD
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define( ['jquery', 'datatables.net'], function ( $ ) {
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return factory( $, window, document );
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} );
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}
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else if ( typeof exports === 'object' ) {
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// CommonJS
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module.exports = function (root, $) {
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if ( ! root ) {
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root = window;
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}
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if ( ! $ || ! $.fn.dataTable ) {
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$ = require('datatables.net')(root, $).$;
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}
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return factory( $, root, root.document );
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};
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}
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else {
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// Browser
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factory( jQuery, window, document );
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}
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}(function( $, window, document, undefined ) {
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'use strict';
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var DataTable = $.fn.dataTable;
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var KeyTable = function ( dt, opts ) {
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// Sanity check that we are using DataTables 1.10 or newer
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if ( ! DataTable.versionCheck || ! DataTable.versionCheck( '1.10.8' ) ) {
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throw 'KeyTable requires DataTables 1.10.8 or newer';
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}
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// User and defaults configuration object
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this.c = $.extend( true, {},
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DataTable.defaults.keyTable,
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KeyTable.defaults,
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opts
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);
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// Internal settings
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this.s = {
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/** @type {DataTable.Api} DataTables' API instance */
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dt: new DataTable.Api( dt ),
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enable: true,
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/** @type {bool} Flag for if a draw is triggered by focus */
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focusDraw: false
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};
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// DOM items
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this.dom = {
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};
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// Check if row reorder has already been initialised on this table
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var settings = this.s.dt.settings()[0];
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var exisiting = settings.keytable;
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if ( exisiting ) {
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return exisiting;
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}
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settings.keytable = this;
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this._constructor();
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};
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$.extend( KeyTable.prototype, {
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* API methods for DataTables API interface
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*/
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/**
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* Blur the table's cell focus
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*/
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blur: function ()
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{
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this._blur();
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},
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/**
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* Enable cell focus for the table
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*
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* @param {string} state Can be `true`, `false` or `-string navigation-only`
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*/
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enable: function ( state )
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{
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this.s.enable = state;
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},
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/**
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* Focus on a cell
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* @param {integer} row Row index
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* @param {integer} column Column index
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*/
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focus: function ( row, column )
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{
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this._focus( this.s.dt.cell( row, column ) );
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},
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/**
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* Is the cell focused
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* @param {object} cell Cell index to check
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* @returns {boolean} true if focused, false otherwise
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*/
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focused: function ( cell )
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{
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var lastFocus = this.s.lastFocus;
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if ( ! lastFocus ) {
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return false;
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}
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var lastIdx = this.s.lastFocus.index();
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return cell.row === lastIdx.row && cell.column === lastIdx.column;
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},
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Constructor
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*/
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/**
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* Initialise the KeyTable instance
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*
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* @private
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*/
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_constructor: function ()
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{
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this._tabInput();
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var that = this;
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var dt = this.s.dt;
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var table = $( dt.table().node() );
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// Need to be able to calculate the cell positions relative to the table
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if ( table.css('position') === 'static' ) {
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table.css( 'position', 'relative' );
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}
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// Click to focus
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$( dt.table().body() ).on( 'click.keyTable', 'th, td', function () {
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if ( that.s.enable === false ) {
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return;
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}
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var cell = dt.cell( this );
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if ( ! cell.any() ) {
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return;
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}
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that._focus( cell );
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} );
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// Key events
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$( document ).on( 'keydown.keyTable', function (e) {
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that._key( e );
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} );
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// Click blur
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if ( this.c.blurable ) {
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$( document ).on( 'click.keyTable', function ( e ) {
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// Click on the search input will blur focus
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if ( $(e.target).parents( '.dataTables_filter' ).length ) {
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that._blur();
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}
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// If the click was inside the DataTables container, don't blur
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if ( $(e.target).parents().filter( dt.table().container() ).length ) {
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return;
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}
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// Don't blur in Editor form
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if ( $(e.target).parents('div.DTE').length ) {
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return;
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}
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that._blur();
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} );
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}
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if ( this.c.editor ) {
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dt.on( 'key.keyTable', function ( e, dt, key, cell, orig ) {
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that._editor( key, orig );
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} );
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}
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// Stave saving
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if ( dt.settings()[0].oFeatures.bStateSave ) {
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dt.on( 'stateSaveParams.keyTable', function (e, s, d) {
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d.keyTable = that.s.lastFocus ?
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that.s.lastFocus.index() :
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null;
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} );
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}
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// Reload - re-focus on the currently selected item. In SSP mode this
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// has the effect of keeping the focus in position when changing page as
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// well (which is different from how client-side processing works).
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dt.on( 'xhr.keyTable', function ( e ) {
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if ( that.s.focusDraw ) {
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// Triggered by server-side processing, and thus `_focus` will
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// do the refocus on the next draw event
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return;
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}
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var lastFocus = that.s.lastFocus;
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if ( lastFocus ) {
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that.s.lastFocus = null;
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dt.one( 'draw', function () {
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that._focus( lastFocus );
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} );
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}
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} );
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dt.on( 'destroy.keyTable', function () {
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dt.off( '.keyTable' );
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$( dt.table().body() ).off( 'click.keyTable', 'th, td' );
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$( document.body )
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.off( 'keydown.keyTable' )
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.off( 'click.keyTable' );
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} );
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// Initial focus comes from state or options
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var state = dt.state.loaded();
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if ( state && state.keyTable ) {
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// Wait until init is done
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dt.one( 'init', function () {
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var cell = dt.cell( state.keyTable );
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// Ensure that the saved cell still exists
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if ( cell.any() ) {
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cell.focus();
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}
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} );
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}
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else if ( this.c.focus ) {
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dt.cell( this.c.focus ).focus();
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}
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},
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Private methods
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*/
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/**
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* Blur the control
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*
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* @private
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*/
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_blur: function ()
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{
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if ( ! this.s.enable || ! this.s.lastFocus ) {
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return;
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}
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var cell = this.s.lastFocus;
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$( cell.node() ).removeClass( this.c.className );
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this.s.lastFocus = null;
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this._emitEvent( 'key-blur', [ this.s.dt, cell ] );
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},
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/**
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* Get an array of the column indexes that KeyTable can operate on. This
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* is a merge of the user supplied columns and the visible columns.
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*
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* @private
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*/
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_columns: function ()
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{
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var dt = this.s.dt;
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var user = dt.columns( this.c.columns ).indexes();
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var out = [];
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dt.columns( ':visible' ).every( function (i) {
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if ( user.indexOf( i ) !== -1 ) {
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out.push( i );
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}
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} );
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return out;
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},
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/**
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* Perform excel like navigation for Editor by triggering an edit on key
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* press
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*
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* @param {integer} key Key code for the pressed key
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* @param {object} orig Original event
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* @private
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*/
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_editor: function ( key, orig )
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{
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var dt = this.s.dt;
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var editor = this.c.editor;
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orig.stopPropagation();
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editor.inline( this.s.lastFocus.index() );
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// Excel style - select all text
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var input = $('div.DTE input, div.DTE textarea');
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if ( input.length ) {
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input[0].select();
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}
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// Reduce the keys the Keys listens for
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dt.keys.enable( 'navigation-only' );
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// On blur of the navigation submit
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dt.one( 'key-blur.editor', function () {
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if ( editor.displayed() ) {
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editor.submit();
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}
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} );
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// Restore full key navigation on close
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editor.one( 'close', function () {
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dt.keys.enable( true );
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dt.off( 'key-blur.editor' );
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} );
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},
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/**
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* Emit an event on the DataTable for listeners
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*
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* @param {string} name Event name
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* @param {array} args Event arguments
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* @private
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*/
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_emitEvent: function ( name, args )
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{
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this.s.dt.iterator( 'table', function ( ctx, i ) {
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$(ctx.nTable).triggerHandler( name, args );
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} );
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},
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/**
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* Focus on a particular cell, shifting the table's paging if required
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*
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* @param {DataTables.Api|integer} row Can be given as an API instance that
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* contains the cell to focus or as an integer. As the latter it is the
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* visible row index - NOT the data index
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* @param {integer} [column] Not required if a cell is given as the first
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* parameter. Otherwise this is the column data index for the cell to
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* focus on
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* @private
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*/
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_focus: function ( row, column )
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{
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var that = this;
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var dt = this.s.dt;
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var pageInfo = dt.page.info();
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var lastFocus = this.s.lastFocus;
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if ( ! this.s.enable ) {
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return;
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}
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if ( typeof row !== 'number' ) {
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// Convert the cell to a row and column
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var index = row.index();
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column = index.column;
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row = dt
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.rows( { filter: 'applied', order: 'applied' } )
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.indexes()
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.indexOf( index.row );
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// For server-side processing normalise the row by adding the start
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// point, since `rows().indexes()` includes only rows that are
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// available at the client-side
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if ( pageInfo.serverSide ) {
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row += pageInfo.start;
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}
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}
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// Is the row on the current page? If not, we need to redraw to show the
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// page
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if ( pageInfo.length !== -1 && (row < pageInfo.start || row >= pageInfo.start+pageInfo.length) ) {
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this.s.focusDraw = true;
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dt
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.one( 'draw', function () {
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that.s.focusDraw = false;
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that._focus( row, column );
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} )
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.page( Math.floor( row / pageInfo.length ) )
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.draw( false );
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return;
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}
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// In the available columns?
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if ( $.inArray( column, this._columns() ) === -1 ) {
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return;
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}
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// De-normalise the server-side processing row, so we select the row
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// in its displayed position
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if ( pageInfo.serverSide ) {
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row -= pageInfo.start;
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}
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var cell = dt.cell( ':eq('+row+')', column, {search: 'applied'} );
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if ( lastFocus ) {
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// Don't trigger a refocus on the same cell
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if ( lastFocus.node() === cell.node() ) {
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return;
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}
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// Otherwise blur the old focus
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this._blur();
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}
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var node = $( cell.node() );
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node.addClass( this.c.className );
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// Shift viewpoint and page to make cell visible
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this._scroll( $(window), $(document.body), node, 'offset' );
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var bodyParent = dt.table().body().parentNode;
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if ( bodyParent !== dt.table().header().parentNode ) {
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var parent = $(bodyParent.parentNode);
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this._scroll( parent, parent, node, 'position' );
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}
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// Event and finish
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this.s.lastFocus = cell;
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this._emitEvent( 'key-focus', [ this.s.dt, cell ] );
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dt.state.save();
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},
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/**
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* Handle key press
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*
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* @param {object} e Event
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* @private
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*/
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_key: function ( e )
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{
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if ( ! this.s.enable ) {
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return;
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}
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if ( e.keyCode === 0 || e.ctrlKey || e.metaKey || e.altKey ) {
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return;
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}
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// If not focused, then there is no key action to take
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var cell = this.s.lastFocus;
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if ( ! cell ) {
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return;
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}
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var that = this;
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var dt = this.s.dt;
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// If we are not listening for this key, do nothing
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if ( this.c.keys && $.inArray( e.keyCode, this.c.keys ) === -1 ) {
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return;
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}
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switch( e.keyCode ) {
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case 9: // tab
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this._shift( e, e.shiftKey ? 'left' : 'right', true );
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break;
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case 27: // esc
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if ( this.s.blurable && this.s.enable === true ) {
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this._blur();
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}
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break;
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case 33: // page up (previous page)
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case 34: // page down (next page)
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e.preventDefault();
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var index = dt.cells( {page: 'current'} ).nodes().indexOf( cell.node() );
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dt
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.one( 'draw', function () {
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var nodes = dt.cells( {page: 'current'} ).nodes();
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that._focus( dt.cell( index < nodes.length ?
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nodes[ index ] :
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nodes[ nodes.length-1 ]
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) );
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} )
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.page( e.keyCode === 33 ? 'previous' : 'next' )
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.draw( false );
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break;
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case 35: // end (end of current page)
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case 36: // home (start of current page)
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e.preventDefault();
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var indexes = dt.cells( {page: 'current'} ).indexes();
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this._focus( dt.cell(
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indexes[ e.keyCode === 35 ? indexes.length-1 : 0 ]
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) );
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break;
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case 37: // left arrow
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this._shift( e, 'left' );
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break;
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case 38: // up arrow
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this._shift( e, 'up' );
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break;
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case 39: // right arrow
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this._shift( e, 'right' );
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break;
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case 40: // down arrow
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this._shift( e, 'down' );
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break;
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default:
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// Everything else - pass through only when fully enabled
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if ( this.s.enable === true ) {
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this._emitEvent( 'key', [ dt, e.keyCode, this.s.lastFocus, e ] );
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}
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break;
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}
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},
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|
|
|
|
/**
|
|
* Scroll a container to make a cell visible in it. This can be used for
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|
* both DataTables scrolling and native window scrolling.
|
|
*
|
|
* @param {jQuery} container Scrolling container
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|
* @param {jQuery} scroller Item being scrolled
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|
* @param {jQuery} cell Cell in the scroller
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|
* @param {string} posOff `position` or `offset` - which to use for the
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|
* calculation. `offset` for the document, otherwise `position`
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|
* @private
|
|
*/
|
|
_scroll: function ( container, scroller, cell, posOff )
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|
{
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|
var offset = cell[posOff]();
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|
var height = cell.outerHeight();
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|
var width = cell.outerWidth();
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|
var scrollTop = scroller.scrollTop();
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|
var scrollLeft = scroller.scrollLeft();
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|
var containerHeight = container.height();
|
|
var containerWidth = container.width();
|
|
|
|
// Top correction
|
|
if ( offset.top < scrollTop ) {
|
|
scroller.scrollTop( offset.top );
|
|
}
|
|
|
|
// Left correction
|
|
if ( offset.left < scrollLeft ) {
|
|
scroller.scrollLeft( offset.left );
|
|
}
|
|
|
|
// Bottom correction
|
|
if ( offset.top + height > scrollTop + containerHeight ) {
|
|
scroller.scrollTop( offset.top + height - containerHeight );
|
|
}
|
|
|
|
// Right correction
|
|
if ( offset.left + width > scrollLeft + containerWidth ) {
|
|
scroller.scrollLeft( offset.left + width - containerWidth );
|
|
}
|
|
},
|
|
|
|
|
|
/**
|
|
* Calculate a single offset movement in the table - up, down, left and
|
|
* right and then perform the focus if possible
|
|
*
|
|
* @param {object} e Event object
|
|
* @param {string} direction Movement direction
|
|
* @param {boolean} keyBlurable `true` if the key press can result in the
|
|
* table being blurred. This is so arrow keys won't blur the table, but
|
|
* tab will.
|
|
* @private
|
|
*/
|
|
_shift: function ( e, direction, keyBlurable )
|
|
{
|
|
var that = this;
|
|
var dt = this.s.dt;
|
|
var pageInfo = dt.page.info();
|
|
var rows = pageInfo.recordsDisplay;
|
|
var currentCell = this.s.lastFocus;
|
|
var columns = this._columns();
|
|
|
|
if ( ! currentCell ) {
|
|
return;
|
|
}
|
|
|
|
var currRow = dt
|
|
.rows( { filter: 'applied', order: 'applied' } )
|
|
.indexes()
|
|
.indexOf( currentCell.index().row );
|
|
|
|
// When server-side processing, `rows().indexes()` only gives the rows
|
|
// that are available at the client-side, so we need to normalise the
|
|
// row's current position by the display start point
|
|
if ( pageInfo.serverSide ) {
|
|
currRow += pageInfo.start;
|
|
}
|
|
|
|
var currCol = dt
|
|
.columns( columns )
|
|
.indexes()
|
|
.indexOf( currentCell.index().column );
|
|
|
|
var
|
|
row = currRow,
|
|
column = columns[ currCol ]; // row is the display, column is an index
|
|
|
|
if ( direction === 'right' ) {
|
|
if ( currCol >= columns.length - 1 ) {
|
|
row++;
|
|
column = columns[0];
|
|
}
|
|
else {
|
|
column = columns[ currCol+1 ];
|
|
}
|
|
}
|
|
else if ( direction === 'left' ) {
|
|
if ( currCol === 0 ) {
|
|
row--;
|
|
column = columns[ columns.length - 1 ];
|
|
}
|
|
else {
|
|
column = columns[ currCol-1 ];
|
|
}
|
|
}
|
|
else if ( direction === 'up' ) {
|
|
row--;
|
|
}
|
|
else if ( direction === 'down' ) {
|
|
row++;
|
|
}
|
|
|
|
if ( row >= 0 && row < rows && $.inArray( column, columns ) !== -1
|
|
) {
|
|
e.preventDefault();
|
|
|
|
this._focus( row, column );
|
|
}
|
|
else if ( ! keyBlurable || ! this.c.blurable ) {
|
|
// No new focus, but if the table isn't blurable, then don't loose
|
|
// focus
|
|
e.preventDefault();
|
|
}
|
|
else {
|
|
this._blur();
|
|
}
|
|
},
|
|
|
|
|
|
/**
|
|
* Create a hidden input element that can receive focus on behalf of the
|
|
* table
|
|
*
|
|
* @private
|
|
*/
|
|
_tabInput: function ()
|
|
{
|
|
var that = this;
|
|
var dt = this.s.dt;
|
|
var tabIndex = this.c.tabIndex !== null ?
|
|
this.c.tabIndex :
|
|
dt.settings()[0].iTabIndex;
|
|
|
|
if ( tabIndex == -1 ) {
|
|
return;
|
|
}
|
|
|
|
var div = $('<div><input type="text" tabindex="'+tabIndex+'"/></div>')
|
|
.css( {
|
|
position: 'absolute',
|
|
height: 1,
|
|
width: 0,
|
|
overflow: 'hidden'
|
|
} )
|
|
.insertBefore( dt.table().node() );
|
|
|
|
div.children().on( 'focus', function () {
|
|
that._focus( dt.cell(':eq(0)', '0:visible', {page: 'current'}) );
|
|
} );
|
|
}
|
|
} );
|
|
|
|
|
|
/**
|
|
* KeyTable default settings for initialisation
|
|
*
|
|
* @namespace
|
|
* @name KeyTable.defaults
|
|
* @static
|
|
*/
|
|
KeyTable.defaults = {
|
|
/**
|
|
* Can focus be removed from the table
|
|
* @type {Boolean}
|
|
*/
|
|
blurable: true,
|
|
|
|
/**
|
|
* Class to give to the focused cell
|
|
* @type {String}
|
|
*/
|
|
className: 'focus',
|
|
|
|
/**
|
|
* Columns that can be focused. This is automatically merged with the
|
|
* visible columns as only visible columns can gain focus.
|
|
* @type {String}
|
|
*/
|
|
columns: '', // all
|
|
|
|
/**
|
|
* Editor instance to automatically perform Excel like navigation
|
|
* @type {Editor}
|
|
*/
|
|
editor: null,
|
|
|
|
/**
|
|
* Select a cell to automatically select on start up. `null` for no
|
|
* automatic selection
|
|
* @type {cell-selector}
|
|
*/
|
|
focus: null,
|
|
|
|
/**
|
|
* Array of keys to listen for
|
|
* @type {null|array}
|
|
*/
|
|
keys: null,
|
|
|
|
/**
|
|
* Tab index for where the table should sit in the document's tab flow
|
|
* @type {integer|null}
|
|
*/
|
|
tabIndex: null
|
|
};
|
|
|
|
|
|
|
|
KeyTable.version = "2.1.1";
|
|
|
|
|
|
$.fn.dataTable.KeyTable = KeyTable;
|
|
$.fn.DataTable.KeyTable = KeyTable;
|
|
|
|
|
|
DataTable.Api.register( 'cell.blur()', function () {
|
|
return this.iterator( 'table', function (ctx) {
|
|
if ( ctx.keytable ) {
|
|
ctx.keytable.blur();
|
|
}
|
|
} );
|
|
} );
|
|
|
|
DataTable.Api.register( 'cell().focus()', function () {
|
|
return this.iterator( 'cell', function (ctx, row, column) {
|
|
if ( ctx.keytable ) {
|
|
ctx.keytable.focus( row, column );
|
|
}
|
|
} );
|
|
} );
|
|
|
|
DataTable.Api.register( 'keys.disable()', function () {
|
|
return this.iterator( 'table', function (ctx) {
|
|
if ( ctx.keytable ) {
|
|
ctx.keytable.enable( false );
|
|
}
|
|
} );
|
|
} );
|
|
|
|
DataTable.Api.register( 'keys.enable()', function ( opts ) {
|
|
return this.iterator( 'table', function (ctx) {
|
|
if ( ctx.keytable ) {
|
|
ctx.keytable.enable( opts === undefined ? true : opts );
|
|
}
|
|
} );
|
|
} );
|
|
|
|
// Cell selector
|
|
DataTable.ext.selector.cell.push( function ( settings, opts, cells ) {
|
|
var focused = opts.focused;
|
|
var kt = settings.keytable;
|
|
var out = [];
|
|
|
|
if ( ! kt || focused === undefined ) {
|
|
return cells;
|
|
}
|
|
|
|
for ( var i=0, ien=cells.length ; i<ien ; i++ ) {
|
|
if ( (focused === true && kt.focused( cells[i] ) ) ||
|
|
(focused === false && ! kt.focused( cells[i] ) )
|
|
) {
|
|
out.push( cells[i] );
|
|
}
|
|
}
|
|
|
|
return out;
|
|
} );
|
|
|
|
|
|
// Attach a listener to the document which listens for DataTables initialisation
|
|
// events so we can automatically initialise
|
|
$(document).on( 'preInit.dt.dtk', function (e, settings, json) {
|
|
if ( e.namespace !== 'dt' ) {
|
|
return;
|
|
}
|
|
|
|
var init = settings.oInit.keys;
|
|
var defaults = DataTable.defaults.keys;
|
|
|
|
if ( init || defaults ) {
|
|
var opts = $.extend( {}, init, defaults );
|
|
|
|
if ( init !== false ) {
|
|
new KeyTable( settings, opts );
|
|
}
|
|
}
|
|
} );
|
|
|
|
|
|
return KeyTable;
|
|
}));
|