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/*
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* File: KeyTable.js
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* Version: 1.1.6
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* CVS: $Idj$
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* Description: Keyboard navigation for HTML tables
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* Author: Allan Jardine (www.sprymedia.co.uk)
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* Created: Fri Mar 13 21:24:02 GMT 2009
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* Modified: $Date$ by $Author$
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* Language: Javascript
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* License: GPL v2 or BSD 3 point style
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* Project: Just a little bit of fun :-)
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* Contact: www.sprymedia.co.uk/contact
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*
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* Copyright 2009-2010 Allan Jardine, all rights reserved.
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*
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*/
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function KeyTable ( oInit )
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{
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* API parameters
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Variable: block
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* Purpose: Flag whether or not KeyTable events should be processed
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* Scope: KeyTable - public
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*/
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this.block = false;
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/*
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* Variable: event
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* Purpose: Container for all event application methods
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* Scope: KeyTable - public
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* Notes: This object contains all the public methods for adding and removing events - these
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* are dynamically added later on
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*/
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this.event = {
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"remove": {}
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};
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* API methods
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Function: fnGetCurrentPosition
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* Purpose: Get the currently focused cell's position
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* Returns: array int: [ x, y ]
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* Inputs: void
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*/
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this.fnGetCurrentPosition = function ()
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{
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return [ _iOldX, _iOldY ];
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};
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/*
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* Function: fnGetCurrentData
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* Purpose: Get the currently focused cell's data (innerHTML)
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* Returns: string: - data requested
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* Inputs: void
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*/
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this.fnGetCurrentData = function ()
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{
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return _nOldFocus.innerHTML;
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};
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/*
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* Function: fnGetCurrentTD
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* Purpose: Get the currently focused cell
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* Returns: node: - focused element
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* Inputs: void
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*/
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this.fnGetCurrentTD = function ()
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{
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return _nOldFocus;
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};
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/*
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* Function: fnSetPosition
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* Purpose: Set the position of the focused cell
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* Returns: -
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* Inputs: int:x - x coordinate
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* int:y - y coordinate
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* Notes: Thanks to Rohan Daxini for the basis of this function
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*/
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this.fnSetPosition = function( x, y )
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{
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if ( typeof x == 'object' && x.nodeName )
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{
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_fnSetFocus( x );
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}
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else
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{
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_fnSetFocus( _fnCellFromCoords(x, y) );
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}
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};
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Private parameters
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/*
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* Variable: _nBody
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* Purpose: Body node of the table - cached for renference
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* Scope: KeyTable - private
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*/
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var _nBody = null;
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/*
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* Variable:
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* Purpose:
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* Scope: KeyTable - private
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*/
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var _nOldFocus = null;
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/*
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* Variable: _iOldX and _iOldY
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* Purpose: X and Y coords of the old elemet that was focused on
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* Scope: KeyTable - private
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*/
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var _iOldX = null;
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var _iOldY = null;
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/*
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* Variable: _that
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* Purpose: Scope saving for 'this' after a jQuery event
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* Scope: KeyTable - private
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*/
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var _that = null;
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/*
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* Variable: sFocusClass
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* Purpose: Class that should be used for focusing on a cell
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* Scope: KeyTable - private
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*/
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var _sFocusClass = "focus";
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/*
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* Variable: _bKeyCapture
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* Purpose: Flag for should KeyTable capture key events or not
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* Scope: KeyTable - private
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*/
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var _bKeyCapture = false;
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/*
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* Variable: _oaoEvents
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* Purpose: Event cache object, one array for each supported event for speed of searching
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* Scope: KeyTable - private
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*/
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var _oaoEvents = {
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"action": [],
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"esc": [],
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"focus": [],
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"blur": []
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};
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/*
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* Variable: _oDatatable
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* Purpose: DataTables object for if we are actually using a DataTables table
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* Scope: KeyTable - private
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*/
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var _oDatatable = null;
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var _bForm;
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var _nInput;
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var _bInputFocused = false;
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Private methods
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* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Key table events
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*/
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/*
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* Function: _fnEventAddTemplate
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* Purpose: Create a function (with closure for sKey) event addition API
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* Returns: function: - template function
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* Inputs: string:sKey - type of event to detect
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*/
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function _fnEventAddTemplate( sKey )
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{
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/*
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* Function: -
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* Purpose: API function for adding event to cache
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* Returns: -
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* Inputs: 1. node:x - target node to add event for
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* 2. function:y - callback function to apply
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* or
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* 1. int:x - x coord. of target cell (can be null for live events)
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* 2. int:y - y coord. of target cell (can be null for live events)
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* 3. function:z - callback function to apply
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* Notes: This function is (interally) overloaded (in as much as javascript allows for
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* that) - the target cell can be given by either node or coords.
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*/
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return function ( x, y, z ) {
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if ( (x===null || typeof x == "number") &&
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(y===null || typeof y == "number") &&
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typeof z == "function" )
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{
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_fnEventAdd( sKey, x, y, z );
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}
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else if ( typeof x == "object" && typeof y == "function" )
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{
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var aCoords = _fnCoordsFromCell( x );
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_fnEventAdd( sKey, aCoords[0], aCoords[1], y );
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}
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else
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{
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alert( "Unhandable event type was added: x" +x+ " y:" +y+ " z:" +z );
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}
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};
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}
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/*
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* Function: _fnEventRemoveTemplate
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* Purpose: Create a function (with closure for sKey) event removal API
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* Returns: function: - template function
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* Inputs: string:sKey - type of event to detect
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*/
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function _fnEventRemoveTemplate( sKey )
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{
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/*
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* Function: -
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* Purpose: API function for removing event from cache
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* Returns: int: - number of events removed
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* Inputs: 1. node:x - target node to remove event from
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* 2. function:y - callback function to apply
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* or
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* 1. int:x - x coord. of target cell (can be null for live events)
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* 2. int:y - y coord. of target cell (can be null for live events)
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* 3. function:z - callback function to remove - optional
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* Notes: This function is (interally) overloaded (in as much as javascript allows for
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* that) - the target cell can be given by either node or coords and the function
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* to remove is optional
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*/
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return function ( x, y, z ) {
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if ( (x===null || typeof arguments[0] == "number") &&
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(y===null || typeof arguments[1] == "number" ) )
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{
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if ( typeof arguments[2] == "function" )
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{
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_fnEventRemove( sKey, x, y, z );
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}
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else
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{
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_fnEventRemove( sKey, x, y );
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}
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}
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else if ( typeof arguments[0] == "object" )
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{
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var aCoords = _fnCoordsFromCell( x );
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if ( typeof arguments[1] == "function" )
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{
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_fnEventRemove( sKey, aCoords[0], aCoords[1], y );
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}
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else
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{
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_fnEventRemove( sKey, aCoords[0], aCoords[1] );
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}
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}
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else
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{
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alert( "Unhandable event type was removed: x" +x+ " y:" +y+ " z:" +z );
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}
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};
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}
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/* Use the template functions to add the event API functions */
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for ( var sKey in _oaoEvents )
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{
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if ( sKey )
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{
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this.event[sKey] = _fnEventAddTemplate( sKey );
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this.event.remove[sKey] = _fnEventRemoveTemplate( sKey );
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}
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}
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/*
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* Function: _fnEventAdd
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* Purpose: Add an event to the internal cache
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* Returns: -
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* Inputs: string:sType - type of event to add, given by the available elements in _oaoEvents
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* int:x - x-coords to add event to - can be null for "blanket" event
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* int:y - y-coords to add event to - can be null for "blanket" event
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* function:fn - callback function for when triggered
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*/
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function _fnEventAdd( sType, x, y, fn )
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{
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_oaoEvents[sType].push( {
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"x": x,
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"y": y,
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"fn": fn
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} );
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}
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/*
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* Function: _fnEventRemove
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* Purpose: Remove an event from the event cache
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* Returns: int: - number of matching events removed
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* Inputs: string:sType - type of event to look for
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* node:nTarget - target table cell
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* function:fn - optional - remove this function. If not given all handlers of this
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* type will be removed
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*/
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function _fnEventRemove( sType, x, y, fn )
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{
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var iCorrector = 0;
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for ( var i=0, iLen=_oaoEvents[sType].length ; i<iLen-iCorrector ; i++ )
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{
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if ( typeof fn != 'undefined' )
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{
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if ( _oaoEvents[sType][i-iCorrector].x == x &&
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_oaoEvents[sType][i-iCorrector].y == y &&
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_oaoEvents[sType][i-iCorrector].fn == fn )
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{
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_oaoEvents[sType].splice( i-iCorrector, 1 );
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iCorrector++;
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}
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}
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else
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{
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if ( _oaoEvents[sType][i-iCorrector].x == x &&
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_oaoEvents[sType][i-iCorrector].y == y )
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{
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_oaoEvents[sType].splice( i, 1 );
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return 1;
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}
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}
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}
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return iCorrector;
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}
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/*
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* Function: _fnEventFire
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* Purpose: Look thought the events cache and fire off the event of interest
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* Returns: int:iFired - number of events fired
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* Inputs: string:sType - type of event to look for
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* int:x - x coord of cell
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* int:y - y coord of ell
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* Notes: It might be more efficient to return after the first event has been tirggered,
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* but that would mean that only one function of a particular type can be
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* subscribed to a particular node.
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*/
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function _fnEventFire ( sType, x, y )
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{
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var iFired = 0;
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var aEvents = _oaoEvents[sType];
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for ( var i=0 ; i<aEvents.length ; i++ )
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{
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if ( (aEvents[i].x == x && aEvents[i].y == y ) ||
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|
366 |
(aEvents[i].x === null && aEvents[i].y == y ) ||
|
|
|
367 |
(aEvents[i].x == x && aEvents[i].y === null ) ||
|
|
|
368 |
(aEvents[i].x === null && aEvents[i].y === null )
|
|
|
369 |
)
|
|
|
370 |
{
|
|
|
371 |
aEvents[i].fn( _fnCellFromCoords(x,y), x, y );
|
|
|
372 |
iFired++;
|
|
|
373 |
}
|
|
|
374 |
}
|
|
|
375 |
return iFired;
|
|
|
376 |
}
|
|
|
377 |
|
|
|
378 |
|
|
|
379 |
|
|
|
380 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
|
381 |
* Focus functions
|
|
|
382 |
*/
|
|
|
383 |
|
|
|
384 |
/*
|
|
|
385 |
* Function: _fnSetFocus
|
|
|
386 |
* Purpose: Set focus on a node, and remove from an old node if needed
|
|
|
387 |
* Returns: -
|
|
|
388 |
* Inputs: node:nTarget - node we want to focus on
|
|
|
389 |
* bool:bAutoScroll - optional - should we scroll the view port to the display
|
|
|
390 |
*/
|
|
|
391 |
function _fnSetFocus( nTarget, bAutoScroll )
|
|
|
392 |
{
|
|
|
393 |
/* If node already has focus, just ignore this call */
|
|
|
394 |
if ( _nOldFocus == nTarget )
|
|
|
395 |
{
|
|
|
396 |
return;
|
|
|
397 |
}
|
|
|
398 |
|
|
|
399 |
if ( typeof bAutoScroll == 'undefined' )
|
|
|
400 |
{
|
|
|
401 |
bAutoScroll = true;
|
|
|
402 |
}
|
|
|
403 |
|
|
|
404 |
/* Remove old focus (with blur event if needed) */
|
|
|
405 |
if ( _nOldFocus !== null )
|
|
|
406 |
{
|
|
|
407 |
_fnRemoveFocus( _nOldFocus );
|
|
|
408 |
}
|
|
|
409 |
|
|
|
410 |
/* Add the new class to highlight the focused cell */
|
|
|
411 |
jQuery(nTarget).addClass( _sFocusClass );
|
|
|
412 |
|
|
|
413 |
/* If it's a DataTable then we need to jump the paging to the relevant page */
|
|
|
414 |
var oSettings;
|
|
|
415 |
if ( _oDatatable )
|
|
|
416 |
{
|
|
|
417 |
oSettings = _oDatatable.fnSettings();
|
|
|
418 |
var iRow = _fnFindDtCell( nTarget )[1];
|
|
|
419 |
var bKeyCaptureCache = _bKeyCapture;
|
|
|
420 |
|
|
|
421 |
/* Page forwards */
|
|
|
422 |
while ( iRow >= oSettings.fnDisplayEnd() )
|
|
|
423 |
{
|
|
|
424 |
if ( oSettings._iDisplayLength >= 0 )
|
|
|
425 |
{
|
|
|
426 |
/* Make sure we are not over running the display array */
|
|
|
427 |
if ( oSettings._iDisplayStart + oSettings._iDisplayLength < oSettings.fnRecordsDisplay() )
|
|
|
428 |
{
|
|
|
429 |
oSettings._iDisplayStart += oSettings._iDisplayLength;
|
|
|
430 |
}
|
|
|
431 |
}
|
|
|
432 |
else
|
|
|
433 |
{
|
|
|
434 |
oSettings._iDisplayStart = 0;
|
|
|
435 |
}
|
|
|
436 |
_oDatatable.oApi._fnCalculateEnd( oSettings );
|
|
|
437 |
}
|
|
|
438 |
|
|
|
439 |
/* Page backwards */
|
|
|
440 |
while ( iRow < oSettings._iDisplayStart )
|
|
|
441 |
{
|
|
|
442 |
oSettings._iDisplayStart = oSettings._iDisplayLength>=0 ?
|
|
|
443 |
oSettings._iDisplayStart - oSettings._iDisplayLength :
|
|
|
444 |
0;
|
|
|
445 |
|
|
|
446 |
if ( oSettings._iDisplayStart < 0 )
|
|
|
447 |
{
|
|
|
448 |
oSettings._iDisplayStart = 0;
|
|
|
449 |
}
|
|
|
450 |
_oDatatable.oApi._fnCalculateEnd( oSettings );
|
|
|
451 |
}
|
|
|
452 |
|
|
|
453 |
/* Re-draw the table */
|
|
|
454 |
_oDatatable.oApi._fnDraw( oSettings );
|
|
|
455 |
|
|
|
456 |
/* Restore the key capture */
|
|
|
457 |
_bKeyCapture = bKeyCaptureCache;
|
|
|
458 |
}
|
|
|
459 |
|
|
|
460 |
/* Cache the information that we are interested in */
|
|
|
461 |
var aNewPos = _fnCoordsFromCell( nTarget );
|
|
|
462 |
_nOldFocus = nTarget;
|
|
|
463 |
_iOldX = aNewPos[0];
|
|
|
464 |
_iOldY = aNewPos[1];
|
|
|
465 |
|
|
|
466 |
var iViewportHeight, iViewportWidth, iScrollTop, iScrollLeft, iHeight, iWidth, aiPos;
|
|
|
467 |
if ( bAutoScroll )
|
|
|
468 |
{
|
|
|
469 |
/* Scroll the viewport such that the new cell is fully visible in the rendered window */
|
|
|
470 |
iViewportHeight = document.documentElement.clientHeight;
|
|
|
471 |
iViewportWidth = document.documentElement.clientWidth;
|
|
|
472 |
iScrollTop = document.body.scrollTop || document.documentElement.scrollTop;
|
|
|
473 |
iScrollLeft = document.body.scrollLeft || document.documentElement.scrollLeft;
|
|
|
474 |
iHeight = nTarget.offsetHeight;
|
|
|
475 |
iWidth = nTarget.offsetWidth;
|
|
|
476 |
aiPos = _fnGetPos( nTarget );
|
|
|
477 |
|
|
|
478 |
/* Correct viewport positioning for vertical scrolling */
|
|
|
479 |
if ( aiPos[1]+iHeight > iScrollTop+iViewportHeight )
|
|
|
480 |
{
|
|
|
481 |
/* Displayed element if off the bottom of the viewport */
|
|
|
482 |
_fnSetScrollTop( aiPos[1]+iHeight - iViewportHeight );
|
|
|
483 |
}
|
|
|
484 |
else if ( aiPos[1] < iScrollTop )
|
|
|
485 |
{
|
|
|
486 |
/* Displayed element if off the top of the viewport */
|
|
|
487 |
_fnSetScrollTop( aiPos[1] );
|
|
|
488 |
}
|
|
|
489 |
|
|
|
490 |
/* Correct viewport positioning for horizontal scrolling */
|
|
|
491 |
if ( aiPos[0]+iWidth > iScrollLeft+iViewportWidth )
|
|
|
492 |
{
|
|
|
493 |
/* Displayed element is off the bottom of the viewport */
|
|
|
494 |
_fnSetScrollLeft( aiPos[0]+iWidth - iViewportWidth );
|
|
|
495 |
}
|
|
|
496 |
else if ( aiPos[0] < iScrollLeft )
|
|
|
497 |
{
|
|
|
498 |
/* Displayed element if off the Left of the viewport */
|
|
|
499 |
_fnSetScrollLeft( aiPos[0] );
|
|
|
500 |
}
|
|
|
501 |
}
|
|
|
502 |
|
|
|
503 |
/* Take account of scrolling in DataTables 1.7 */
|
|
|
504 |
if ( _oDatatable && typeof oSettings.oScroll != 'undefined' &&
|
|
|
505 |
(oSettings.oScroll.sX !== "" || oSettings.oScroll.xY !== "") )
|
|
|
506 |
{
|
|
|
507 |
var dtScrollBody = oSettings.nTable.parentNode;
|
|
|
508 |
iViewportHeight = dtScrollBody.clientHeight;
|
|
|
509 |
iViewportWidth = dtScrollBody.clientWidth;
|
|
|
510 |
iScrollTop = dtScrollBody.scrollTop;
|
|
|
511 |
iScrollLeft = dtScrollBody.scrollLeft;
|
|
|
512 |
iHeight = nTarget.offsetHeight;
|
|
|
513 |
iWidth = nTarget.offsetWidth;
|
|
|
514 |
|
|
|
515 |
/* Correct for vertical scrolling */
|
|
|
516 |
if ( nTarget.offsetTop + iHeight > iViewportHeight+iScrollTop )
|
|
|
517 |
{
|
|
|
518 |
dtScrollBody.scrollTop = (nTarget.offsetTop + iHeight) - iViewportHeight;
|
|
|
519 |
}
|
|
|
520 |
else if ( nTarget.offsetTop < iScrollTop )
|
|
|
521 |
{
|
|
|
522 |
dtScrollBody.scrollTop = nTarget.offsetTop;
|
|
|
523 |
}
|
|
|
524 |
|
|
|
525 |
/* Correct for horizontal scrolling */
|
|
|
526 |
if ( nTarget.offsetLeft + iWidth > iViewportWidth+iScrollLeft )
|
|
|
527 |
{
|
|
|
528 |
dtScrollBody.scrollLeft = (nTarget.offsetLeft + iWidth) - iViewportWidth;
|
|
|
529 |
}
|
|
|
530 |
else if ( nTarget.offsetLeft < iScrollLeft )
|
|
|
531 |
{
|
|
|
532 |
dtScrollBody.scrollLeft = nTarget.offsetLeft;
|
|
|
533 |
}
|
|
|
534 |
}
|
|
|
535 |
|
|
|
536 |
/* Fire of the focus event if there is one */
|
|
|
537 |
_fnEventFire( "focus", _iOldX, _iOldY );
|
|
|
538 |
}
|
|
|
539 |
|
|
|
540 |
|
|
|
541 |
/*
|
|
|
542 |
* Function: _fnBlur
|
|
|
543 |
* Purpose: Blur focus from the whole table
|
|
|
544 |
* Returns: -
|
|
|
545 |
* Inputs: -
|
|
|
546 |
*/
|
|
|
547 |
function _fnBlur()
|
|
|
548 |
{
|
|
|
549 |
_fnRemoveFocus( _nOldFocus );
|
|
|
550 |
_iOldX = null;
|
|
|
551 |
_iOldY = null;
|
|
|
552 |
_nOldFocus = null;
|
|
|
553 |
_fnReleaseKeys();
|
|
|
554 |
}
|
|
|
555 |
|
|
|
556 |
|
|
|
557 |
/*
|
|
|
558 |
* Function: _fnRemoveFocus
|
|
|
559 |
* Purpose: Remove focus from a cell and fire any blur events which are attached
|
|
|
560 |
* Returns: -
|
|
|
561 |
* Inputs: node:nTarget - cell of interest
|
|
|
562 |
*/
|
|
|
563 |
function _fnRemoveFocus( nTarget )
|
|
|
564 |
{
|
|
|
565 |
jQuery(nTarget).removeClass( _sFocusClass );
|
|
|
566 |
_fnEventFire( "blur", _iOldX, _iOldY );
|
|
|
567 |
}
|
|
|
568 |
|
|
|
569 |
|
|
|
570 |
/*
|
|
|
571 |
* Function: _fnClick
|
|
|
572 |
* Purpose: Focus on the element that has been clicked on by the user
|
|
|
573 |
* Returns: -
|
|
|
574 |
* Inputs: event:e - click event
|
|
|
575 |
*/
|
|
|
576 |
function _fnClick ( e )
|
|
|
577 |
{
|
|
|
578 |
var nTarget = this;
|
|
|
579 |
while ( nTarget.nodeName != "TD" )
|
|
|
580 |
{
|
|
|
581 |
nTarget = nTarget.parentNode;
|
|
|
582 |
}
|
|
|
583 |
|
|
|
584 |
_fnSetFocus( nTarget );
|
|
|
585 |
_fnCaptureKeys();
|
|
|
586 |
}
|
|
|
587 |
|
|
|
588 |
|
|
|
589 |
|
|
|
590 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
|
591 |
* Key events
|
|
|
592 |
*/
|
|
|
593 |
|
|
|
594 |
/*
|
|
|
595 |
* Function: _fnKey
|
|
|
596 |
* Purpose: Deal with a key events, be it moving the focus or return etc.
|
|
|
597 |
* Returns: bool: - allow browser default action
|
|
|
598 |
* Inputs: event:e - key event
|
|
|
599 |
*/
|
|
|
600 |
function _fnKey ( e )
|
|
|
601 |
{
|
|
|
602 |
/* If user or system has blocked KeyTable from doing anything, just ignore this event */
|
|
|
603 |
if ( _that.block || !_bKeyCapture )
|
|
|
604 |
{
|
|
|
605 |
return true;
|
|
|
606 |
}
|
|
|
607 |
|
|
|
608 |
/* If a modifier key is pressed (exapct shift), ignore the event */
|
|
|
609 |
if ( e.metaKey || e.altKey || e.ctrlKey )
|
|
|
610 |
{
|
|
|
611 |
return true;
|
|
|
612 |
}
|
|
|
613 |
var
|
|
|
614 |
x, y,
|
|
|
615 |
iTableWidth = _nBody.getElementsByTagName('tr')[0].getElementsByTagName('td').length,
|
|
|
616 |
iTableHeight;
|
|
|
617 |
|
|
|
618 |
/* Get table height and width - done here so as to be dynamic (if table is updated) */
|
|
|
619 |
if ( _oDatatable )
|
|
|
620 |
{
|
|
|
621 |
/*
|
|
|
622 |
* Locate the current node in the DataTable overriding the old positions - the reason for
|
|
|
623 |
* is is that there might have been some DataTables interaction between the last focus and
|
|
|
624 |
* now
|
|
|
625 |
*/
|
|
|
626 |
var oSettings = _oDatatable.fnSettings();
|
|
|
627 |
iTableHeight = oSettings.aiDisplay.length;
|
|
|
628 |
|
|
|
629 |
var aDtPos = _fnFindDtCell( _nOldFocus );
|
|
|
630 |
if ( aDtPos === null )
|
|
|
631 |
{
|
|
|
632 |
/* If the table has been updated such that the focused cell can't be seen - do nothing */
|
|
|
633 |
return;
|
|
|
634 |
}
|
|
|
635 |
_iOldX = aDtPos[ 0 ];
|
|
|
636 |
_iOldY = aDtPos[ 1 ];
|
|
|
637 |
}
|
|
|
638 |
else
|
|
|
639 |
{
|
|
|
640 |
iTableHeight = _nBody.getElementsByTagName('tr').length;
|
|
|
641 |
}
|
|
|
642 |
|
|
|
643 |
/* Capture shift+tab to match the left arrow key */
|
|
|
644 |
var iKey = (e.keyCode == 9 && e.shiftKey) ? -1 : e.keyCode;
|
|
|
645 |
|
|
|
646 |
switch( iKey )
|
|
|
647 |
{
|
|
|
648 |
case 13: /* return */
|
|
|
649 |
e.preventDefault();
|
|
|
650 |
e.stopPropagation();
|
|
|
651 |
_fnEventFire( "action", _iOldX, _iOldY );
|
|
|
652 |
return true;
|
|
|
653 |
|
|
|
654 |
case 27: /* esc */
|
|
|
655 |
if ( !_fnEventFire( "esc", _iOldX, _iOldY ) )
|
|
|
656 |
{
|
|
|
657 |
/* Only lose focus if there isn't an escape handler on the cell */
|
|
|
658 |
_fnBlur();
|
|
|
659 |
}
|
|
|
660 |
break;
|
|
|
661 |
|
|
|
662 |
case -1:
|
|
|
663 |
case 37: /* left arrow */
|
|
|
664 |
if ( _iOldX > 0 ) {
|
|
|
665 |
x = _iOldX - 1;
|
|
|
666 |
y = _iOldY;
|
|
|
667 |
} else if ( _iOldY > 0 ) {
|
|
|
668 |
x = iTableWidth-1;
|
|
|
669 |
y = _iOldY - 1;
|
|
|
670 |
} else {
|
|
|
671 |
/* at start of table */
|
|
|
672 |
if ( iKey == -1 && _bForm )
|
|
|
673 |
{
|
|
|
674 |
/* If we are in a form, return focus to the 'input' element such that tabbing will
|
|
|
675 |
* follow correctly in the browser
|
|
|
676 |
*/
|
|
|
677 |
_bInputFocused = true;
|
|
|
678 |
_nInput.focus();
|
|
|
679 |
|
|
|
680 |
/* This timeout is a little nasty - but IE appears to have some asyhnc behaviour for
|
|
|
681 |
* focus
|
|
|
682 |
*/
|
|
|
683 |
setTimeout( function(){ _bInputFocused = false; }, 0 );
|
|
|
684 |
_bKeyCapture = false;
|
|
|
685 |
_fnBlur();
|
|
|
686 |
return true;
|
|
|
687 |
}
|
|
|
688 |
else
|
|
|
689 |
{
|
|
|
690 |
return false;
|
|
|
691 |
}
|
|
|
692 |
}
|
|
|
693 |
break;
|
|
|
694 |
|
|
|
695 |
case 38: /* up arrow */
|
|
|
696 |
if ( _iOldY > 0 ) {
|
|
|
697 |
x = _iOldX;
|
|
|
698 |
y = _iOldY - 1;
|
|
|
699 |
} else {
|
|
|
700 |
return false;
|
|
|
701 |
}
|
|
|
702 |
break;
|
|
|
703 |
|
|
|
704 |
case 9: /* tab */
|
|
|
705 |
case 39: /* right arrow */
|
|
|
706 |
if ( _iOldX < iTableWidth-1 ) {
|
|
|
707 |
x = _iOldX + 1;
|
|
|
708 |
y = _iOldY;
|
|
|
709 |
} else if ( _iOldY < iTableHeight-1 ) {
|
|
|
710 |
x = 0;
|
|
|
711 |
y = _iOldY + 1;
|
|
|
712 |
} else {
|
|
|
713 |
/* at end of table */
|
|
|
714 |
if ( iKey == 9 && _bForm )
|
|
|
715 |
{
|
|
|
716 |
/* If we are in a form, return focus to the 'input' element such that tabbing will
|
|
|
717 |
* follow correctly in the browser
|
|
|
718 |
*/
|
|
|
719 |
_bInputFocused = true;
|
|
|
720 |
_nInput.focus();
|
|
|
721 |
|
|
|
722 |
/* This timeout is a little nasty - but IE appears to have some asyhnc behaviour for
|
|
|
723 |
* focus
|
|
|
724 |
*/
|
|
|
725 |
setTimeout( function(){ _bInputFocused = false; }, 0 );
|
|
|
726 |
_bKeyCapture = false;
|
|
|
727 |
_fnBlur();
|
|
|
728 |
return true;
|
|
|
729 |
}
|
|
|
730 |
else
|
|
|
731 |
{
|
|
|
732 |
return false;
|
|
|
733 |
}
|
|
|
734 |
}
|
|
|
735 |
break;
|
|
|
736 |
|
|
|
737 |
case 40: /* down arrow */
|
|
|
738 |
if ( _iOldY < iTableHeight-1 ) {
|
|
|
739 |
x = _iOldX;
|
|
|
740 |
y = _iOldY + 1;
|
|
|
741 |
} else {
|
|
|
742 |
return false;
|
|
|
743 |
}
|
|
|
744 |
break;
|
|
|
745 |
|
|
|
746 |
default: /* Nothing we are interested in */
|
|
|
747 |
return true;
|
|
|
748 |
}
|
|
|
749 |
|
|
|
750 |
_fnSetFocus( _fnCellFromCoords(x, y) );
|
|
|
751 |
return false;
|
|
|
752 |
}
|
|
|
753 |
|
|
|
754 |
|
|
|
755 |
/*
|
|
|
756 |
* Function: _fnCaptureKeys
|
|
|
757 |
* Purpose: Start capturing key events for this table
|
|
|
758 |
* Returns: -
|
|
|
759 |
* Inputs: -
|
|
|
760 |
*/
|
|
|
761 |
function _fnCaptureKeys( )
|
|
|
762 |
{
|
|
|
763 |
if ( !_bKeyCapture )
|
|
|
764 |
{
|
|
|
765 |
_bKeyCapture = true;
|
|
|
766 |
}
|
|
|
767 |
}
|
|
|
768 |
|
|
|
769 |
|
|
|
770 |
/*
|
|
|
771 |
* Function: _fnReleaseKeys
|
|
|
772 |
* Purpose: Stop capturing key events for this table
|
|
|
773 |
* Returns: -
|
|
|
774 |
* Inputs: -
|
|
|
775 |
*/
|
|
|
776 |
function _fnReleaseKeys( )
|
|
|
777 |
{
|
|
|
778 |
_bKeyCapture = false;
|
|
|
779 |
}
|
|
|
780 |
|
|
|
781 |
|
|
|
782 |
|
|
|
783 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
|
784 |
* Support functions
|
|
|
785 |
*/
|
|
|
786 |
|
|
|
787 |
/*
|
|
|
788 |
* Function: _fnCellFromCoords
|
|
|
789 |
* Purpose: Calulate the target TD cell from x and y coordinates
|
|
|
790 |
* Returns: node: - TD target
|
|
|
791 |
* Inputs: int:x - x coordinate
|
|
|
792 |
* int:y - y coordinate
|
|
|
793 |
*/
|
|
|
794 |
function _fnCellFromCoords( x, y )
|
|
|
795 |
{
|
|
|
796 |
if ( _oDatatable )
|
|
|
797 |
{
|
|
|
798 |
var oSettings = _oDatatable.fnSettings();
|
|
|
799 |
if ( typeof oSettings.aoData[ oSettings.aiDisplay[ y ] ] != 'undefined' )
|
|
|
800 |
{
|
|
|
801 |
return oSettings.aoData[ oSettings.aiDisplay[ y ] ].nTr.getElementsByTagName('td')[x];
|
|
|
802 |
}
|
|
|
803 |
else
|
|
|
804 |
{
|
|
|
805 |
return null;
|
|
|
806 |
}
|
|
|
807 |
}
|
|
|
808 |
else
|
|
|
809 |
{
|
|
|
810 |
return jQuery('tr:eq('+y+')>td:eq('+x+')', _nBody )[0];
|
|
|
811 |
}
|
|
|
812 |
}
|
|
|
813 |
|
|
|
814 |
|
|
|
815 |
/*
|
|
|
816 |
* Function: _fnCoordsFromCell
|
|
|
817 |
* Purpose: Calculate the x and y position in a table from a TD cell
|
|
|
818 |
* Returns: array[2] int: [x, y]
|
|
|
819 |
* Inputs: node:n - TD cell of interest
|
|
|
820 |
* Notes: Not actually interested in this for DataTables since it might go out of date
|
|
|
821 |
*/
|
|
|
822 |
function _fnCoordsFromCell( n )
|
|
|
823 |
{
|
|
|
824 |
if ( _oDatatable )
|
|
|
825 |
{
|
|
|
826 |
var oSettings = _oDatatable.fnSettings();
|
|
|
827 |
return [
|
|
|
828 |
jQuery('td', n.parentNode).index(n),
|
|
|
829 |
jQuery('tr', n.parentNode.parentNode).index(n.parentNode) + oSettings._iDisplayStart
|
|
|
830 |
];
|
|
|
831 |
}
|
|
|
832 |
else
|
|
|
833 |
{
|
|
|
834 |
return [
|
|
|
835 |
jQuery('td', n.parentNode).index(n),
|
|
|
836 |
jQuery('tr', n.parentNode.parentNode).index(n.parentNode)
|
|
|
837 |
];
|
|
|
838 |
}
|
|
|
839 |
}
|
|
|
840 |
|
|
|
841 |
|
|
|
842 |
/*
|
|
|
843 |
* Function: _fnSetScrollTop
|
|
|
844 |
* Purpose: Set the vertical scrolling position
|
|
|
845 |
* Returns: -
|
|
|
846 |
* Inputs: int:iPos - scrolltop
|
|
|
847 |
* Notes: This is so nasty, but without browser detection you can't tell which you should set
|
|
|
848 |
* So on browsers that support both, the scroll top will be set twice. I can live with
|
|
|
849 |
* that :-)
|
|
|
850 |
*/
|
|
|
851 |
function _fnSetScrollTop( iPos )
|
|
|
852 |
{
|
|
|
853 |
document.documentElement.scrollTop = iPos;
|
|
|
854 |
document.body.scrollTop = iPos;
|
|
|
855 |
}
|
|
|
856 |
|
|
|
857 |
|
|
|
858 |
/*
|
|
|
859 |
* Function: _fnSetScrollLeft
|
|
|
860 |
* Purpose: Set the horizontal scrolling position
|
|
|
861 |
* Returns: -
|
|
|
862 |
* Inputs: int:iPos - scrollleft
|
|
|
863 |
*/
|
|
|
864 |
function _fnSetScrollLeft( iPos )
|
|
|
865 |
{
|
|
|
866 |
document.documentElement.scrollLeft = iPos;
|
|
|
867 |
document.body.scrollLeft = iPos;
|
|
|
868 |
}
|
|
|
869 |
|
|
|
870 |
|
|
|
871 |
/*
|
|
|
872 |
* Function: _fnGetPos
|
|
|
873 |
* Purpose: Get the position of an object on the rendered page
|
|
|
874 |
* Returns: array[2] int: [left, right]
|
|
|
875 |
* Inputs: node:obj - element of interest
|
|
|
876 |
*/
|
|
|
877 |
function _fnGetPos ( obj )
|
|
|
878 |
{
|
|
|
879 |
var iLeft = 0;
|
|
|
880 |
var iTop = 0;
|
|
|
881 |
|
|
|
882 |
if (obj.offsetParent)
|
|
|
883 |
{
|
|
|
884 |
iLeft = obj.offsetLeft;
|
|
|
885 |
iTop = obj.offsetTop;
|
|
|
886 |
obj = obj.offsetParent;
|
|
|
887 |
while (obj)
|
|
|
888 |
{
|
|
|
889 |
iLeft += obj.offsetLeft;
|
|
|
890 |
iTop += obj.offsetTop;
|
|
|
891 |
obj = obj.offsetParent;
|
|
|
892 |
}
|
|
|
893 |
}
|
|
|
894 |
return [iLeft,iTop];
|
|
|
895 |
}
|
|
|
896 |
|
|
|
897 |
|
|
|
898 |
/*
|
|
|
899 |
* Function: _fnFindDtCell
|
|
|
900 |
* Purpose: Get the coords. of a cell from the DataTables internal information
|
|
|
901 |
* Returns: array[2] int: [x, y] coords. or null if not found
|
|
|
902 |
* Inputs: node:nTarget - the node of interest
|
|
|
903 |
*/
|
|
|
904 |
function _fnFindDtCell( nTarget )
|
|
|
905 |
{
|
|
|
906 |
var oSettings = _oDatatable.fnSettings();
|
|
|
907 |
for ( var i=0, iLen=oSettings.aiDisplay.length ; i<iLen ; i++ )
|
|
|
908 |
{
|
|
|
909 |
var nTr = oSettings.aoData[ oSettings.aiDisplay[i] ].nTr;
|
|
|
910 |
var nTds = nTr.getElementsByTagName('td');
|
|
|
911 |
for ( var j=0, jLen=nTds.length ; j<jLen ; j++ )
|
|
|
912 |
{
|
|
|
913 |
if ( nTds[j] == nTarget )
|
|
|
914 |
{
|
|
|
915 |
return [ j, i ];
|
|
|
916 |
}
|
|
|
917 |
}
|
|
|
918 |
}
|
|
|
919 |
return null;
|
|
|
920 |
}
|
|
|
921 |
|
|
|
922 |
|
|
|
923 |
|
|
|
924 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
|
925 |
* Initialisation
|
|
|
926 |
*/
|
|
|
927 |
|
|
|
928 |
/*
|
|
|
929 |
* Function: _fnInit
|
|
|
930 |
* Purpose: Initialise the KeyTable
|
|
|
931 |
* Returns: -
|
|
|
932 |
* Inputs: object:oInit - optional - Initalisation object with the following parameters:
|
|
|
933 |
* array[2] int:focus - x and y coordinates of the initial target
|
|
|
934 |
* or
|
|
|
935 |
* node:focus - the node to set initial focus on
|
|
|
936 |
* node:table - the table to use, if not given, first table with class 'KeyTable' will be used
|
|
|
937 |
* string:focusClass - focusing class to give to table elements
|
|
|
938 |
* object:that - focus
|
|
|
939 |
* bool:initScroll - scroll the view port on load, default true
|
|
|
940 |
* int:tabIndex - the tab index to give the hidden input element
|
|
|
941 |
*/
|
|
|
942 |
function _fnInit( oInit, that )
|
|
|
943 |
{
|
|
|
944 |
/* Save scope */
|
|
|
945 |
_that = that;
|
|
|
946 |
|
|
|
947 |
/* Capture undefined initialisation and apply the defaults */
|
|
|
948 |
if ( typeof oInit == 'undefined' ) {
|
|
|
949 |
oInit = {};
|
|
|
950 |
}
|
|
|
951 |
|
|
|
952 |
if ( typeof oInit.focus == 'undefined' ) {
|
|
|
953 |
oInit.focus = [0,0];
|
|
|
954 |
}
|
|
|
955 |
|
|
|
956 |
if ( typeof oInit.table == 'undefined' ) {
|
|
|
957 |
oInit.table = jQuery('table.KeyTable')[0];
|
|
|
958 |
}
|
|
|
959 |
|
|
|
960 |
if ( typeof oInit.focusClass != 'undefined' ) {
|
|
|
961 |
_sFocusClass = oInit.focusClass;
|
|
|
962 |
}
|
|
|
963 |
|
|
|
964 |
if ( typeof oInit.datatable != 'undefined' ) {
|
|
|
965 |
_oDatatable = oInit.datatable;
|
|
|
966 |
}
|
|
|
967 |
|
|
|
968 |
if ( typeof oInit.initScroll == 'undefined' ) {
|
|
|
969 |
oInit.initScroll = true;
|
|
|
970 |
}
|
|
|
971 |
|
|
|
972 |
if ( typeof oInit.form == 'undefined' ) {
|
|
|
973 |
oInit.form = false;
|
|
|
974 |
}
|
|
|
975 |
_bForm = oInit.form;
|
|
|
976 |
|
|
|
977 |
/* Cache the tbody node of interest */
|
|
|
978 |
_nBody = oInit.table.getElementsByTagName('tbody')[0];
|
|
|
979 |
|
|
|
980 |
/* If the table is inside a form, then we need a hidden input box which can be used by the
|
|
|
981 |
* browser to catch the browser tabbing for our table
|
|
|
982 |
*/
|
|
|
983 |
if ( _bForm )
|
|
|
984 |
{
|
|
|
985 |
var nDiv = document.createElement('div');
|
|
|
986 |
_nInput = document.createElement('input');
|
|
|
987 |
nDiv.style.height = "1px"; /* Opera requires a little something */
|
|
|
988 |
nDiv.style.width = "0px";
|
|
|
989 |
nDiv.style.overflow = "hidden";
|
|
|
990 |
if ( typeof oInit.tabIndex != 'undefined' )
|
|
|
991 |
{
|
|
|
992 |
_nInput.tabIndex = oInit.tabIndex;
|
|
|
993 |
}
|
|
|
994 |
nDiv.appendChild(_nInput);
|
|
|
995 |
oInit.table.parentNode.insertBefore( nDiv, oInit.table.nextSibling );
|
|
|
996 |
|
|
|
997 |
jQuery(_nInput).focus( function () {
|
|
|
998 |
/* See if we want to 'tab into' the table or out */
|
|
|
999 |
if ( !_bInputFocused )
|
|
|
1000 |
{
|
|
|
1001 |
_bKeyCapture = true;
|
|
|
1002 |
_bInputFocused = false;
|
|
|
1003 |
if ( typeof oInit.focus.nodeName != "undefined" )
|
|
|
1004 |
{
|
|
|
1005 |
_fnSetFocus( oInit.focus, oInit.initScroll );
|
|
|
1006 |
}
|
|
|
1007 |
else
|
|
|
1008 |
{
|
|
|
1009 |
_fnSetFocus( _fnCellFromCoords( oInit.focus[0], oInit.focus[1]), oInit.initScroll );
|
|
|
1010 |
}
|
|
|
1011 |
|
|
|
1012 |
/* Need to interup the thread for this to work */
|
|
|
1013 |
setTimeout( function() { _nInput.blur(); }, 0 );
|
|
|
1014 |
}
|
|
|
1015 |
} );
|
|
|
1016 |
_bKeyCapture = false;
|
|
|
1017 |
}
|
|
|
1018 |
else
|
|
|
1019 |
{
|
|
|
1020 |
/* Set the initial focus on the table */
|
|
|
1021 |
if ( typeof oInit.focus.nodeName != "undefined" )
|
|
|
1022 |
{
|
|
|
1023 |
_fnSetFocus( oInit.focus, oInit.initScroll );
|
|
|
1024 |
}
|
|
|
1025 |
else
|
|
|
1026 |
{
|
|
|
1027 |
_fnSetFocus( _fnCellFromCoords( oInit.focus[0], oInit.focus[1]), oInit.initScroll );
|
|
|
1028 |
}
|
|
|
1029 |
_fnCaptureKeys();
|
|
|
1030 |
}
|
|
|
1031 |
|
|
|
1032 |
/*
|
|
|
1033 |
* Add event listeners
|
|
|
1034 |
* Well - I hate myself for doing this, but it would appear that key events in browsers are
|
|
|
1035 |
* a complete mess, particulay when you consider arrow keys, which of course are one of the
|
|
|
1036 |
* main areas of interest here. So basically for arrow keys, there is no keypress event in
|
|
|
1037 |
* Safari and IE, while there is in Firefox and Opera. But Firefox and Opera don't repeat the
|
|
|
1038 |
* keydown event for an arrow key. OUCH. See the following two articles for more:
|
|
|
1039 |
* http://www.quirksmode.org/dom/events/keys.html
|
|
|
1040 |
* https://lists.webkit.org/pipermail/webkit-dev/2007-December/002992.html
|
|
|
1041 |
* http://unixpapa.com/js/key.html
|
|
|
1042 |
* PPK considers the IE / Safari method correct (good enough for me!) so we (urgh) detect
|
|
|
1043 |
* Mozilla and Opera and apply keypress for them, while everything else gets keydown. If
|
|
|
1044 |
* Mozilla or Opera change their implemention in future, this will need to be updated...
|
|
|
1045 |
* although at the time of writing (14th March 2009) Minefield still uses the 3.0 behaviour.
|
|
|
1046 |
*/
|
|
|
1047 |
if ( jQuery.browser.mozilla || jQuery.browser.opera )
|
|
|
1048 |
{
|
|
|
1049 |
jQuery(document).bind( "keypress", _fnKey );
|
|
|
1050 |
}
|
|
|
1051 |
else
|
|
|
1052 |
{
|
|
|
1053 |
jQuery(document).bind( "keydown", _fnKey );
|
|
|
1054 |
}
|
|
|
1055 |
|
|
|
1056 |
if ( _oDatatable )
|
|
|
1057 |
{
|
|
|
1058 |
jQuery('td', _oDatatable.fnGetNodes()).click( _fnClick );
|
|
|
1059 |
}
|
|
|
1060 |
else
|
|
|
1061 |
{
|
|
|
1062 |
jQuery('td', _nBody).click( _fnClick );
|
|
|
1063 |
}
|
|
|
1064 |
|
|
|
1065 |
/* Loose table focus when click outside the table */
|
|
|
1066 |
jQuery(document).click( function(e) {
|
|
|
1067 |
var nTarget = e.target;
|
|
|
1068 |
var bTableClick = false;
|
|
|
1069 |
while ( nTarget )
|
|
|
1070 |
{
|
|
|
1071 |
if ( nTarget == oInit.table )
|
|
|
1072 |
{
|
|
|
1073 |
bTableClick = true;
|
|
|
1074 |
break;
|
|
|
1075 |
}
|
|
|
1076 |
nTarget = nTarget.parentNode;
|
|
|
1077 |
}
|
|
|
1078 |
if ( !bTableClick )
|
|
|
1079 |
{
|
|
|
1080 |
_fnBlur();
|
|
|
1081 |
}
|
|
|
1082 |
} );
|
|
|
1083 |
}
|
|
|
1084 |
|
|
|
1085 |
/* Initialise our new object */
|
|
|
1086 |
_fnInit( oInit, this );
|
|
|
1087 |
}
|