| 1 |
/* |
| 2 |
* File: FixedHeader.js |
| 3 |
* Version: 2.0.6 |
| 4 |
* Description: "Fix" a header at the top of the table, so it scrolls with the table |
| 5 |
* Author: Allan Jardine (www.sprymedia.co.uk) |
| 6 |
* Created: Wed 16 Sep 2009 19:46:30 BST |
| 7 |
* Language: Javascript |
| 8 |
* License: GPL v2 or BSD 3 point style |
| 9 |
* Project: Just a little bit of fun - enjoy :-) |
| 10 |
* Contact: www.sprymedia.co.uk/contact |
| 11 |
* |
| 12 |
* Copyright 2009-2012 Allan Jardine, all rights reserved. |
| 13 |
* |
| 14 |
* This source file is free software, under either the GPL v2 license or a |
| 15 |
* BSD style license, available at: |
| 16 |
* http://datatables.net/license_gpl2 |
| 17 |
* http://datatables.net/license_bsd |
| 18 |
*/ |
| 19 |
|
| 20 |
/* |
| 21 |
* Function: FixedHeader |
| 22 |
* Purpose: Provide 'fixed' header, footer and columns on an HTML table |
| 23 |
* Returns: object:FixedHeader - must be called with 'new' |
| 24 |
* Inputs: mixed:mTable - target table |
| 25 |
* 1. DataTable object - when using FixedHeader with DataTables, or |
| 26 |
* 2. HTML table node - when using FixedHeader without DataTables |
| 27 |
* object:oInit - initialisation settings, with the following properties (each optional) |
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* bool:top - fix the header (default true) |
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* bool:bottom - fix the footer (default false) |
| 30 |
* bool:left - fix the left most column (default false) |
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* bool:right - fix the right most column (default false) |
| 32 |
* int:zTop - fixed header zIndex |
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* int:zBottom - fixed footer zIndex |
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* int:zLeft - fixed left zIndex |
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* int:zRight - fixed right zIndex |
| 36 |
*/ |
| 37 |
var FixedHeader = function ( mTable, oInit ) { |
| 38 |
/* Sanity check - you just know it will happen */ |
| 39 |
if ( typeof this.fnInit != 'function' ) |
| 40 |
{ |
| 41 |
alert( "FixedHeader warning: FixedHeader must be initialised with the 'new' keyword." ); |
| 42 |
return; |
| 43 |
} |
| 44 |
|
| 45 |
var that = this; |
| 46 |
var oSettings = { |
| 47 |
"aoCache": [], |
| 48 |
"oSides": { |
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"top": true, |
| 50 |
"bottom": false, |
| 51 |
"left": false, |
| 52 |
"right": false |
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}, |
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"oZIndexes": { |
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"top": 104, |
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"bottom": 103, |
| 57 |
"left": 102, |
| 58 |
"right": 101 |
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}, |
| 60 |
"oMes": { |
| 61 |
"iTableWidth": 0, |
| 62 |
"iTableHeight": 0, |
| 63 |
"iTableLeft": 0, |
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"iTableRight": 0, /* note this is left+width, not actually "right" */ |
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"iTableTop": 0, |
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"iTableBottom": 0 /* note this is top+height, not actually "bottom" */ |
| 67 |
}, |
| 68 |
"oOffset": { |
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"top": 0 |
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}, |
| 71 |
"nTable": null, |
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"bUseAbsPos": false, |
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"bFooter": false |
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}; |
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|
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/* |
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* Function: fnGetSettings |
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* Purpose: Get the settings for this object |
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* Returns: object: - settings object |
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* Inputs: - |
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*/ |
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this.fnGetSettings = function () { |
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return oSettings; |
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}; |
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|
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/* |
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* Function: fnUpdate |
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* Purpose: Update the positioning and copies of the fixed elements |
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* Returns: - |
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* Inputs: - |
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*/ |
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this.fnUpdate = function () { |
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this._fnUpdateClones(); |
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this._fnUpdatePositions(); |
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}; |
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|
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/* |
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* Function: fnPosition |
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* Purpose: Update the positioning of the fixed elements |
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* Returns: - |
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* Inputs: - |
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*/ |
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this.fnPosition = function () { |
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this._fnUpdatePositions(); |
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}; |
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|
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/* Let's do it */ |
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this.fnInit( mTable, oInit ); |
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|
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/* Store the instance on the DataTables object for easy access */ |
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if ( typeof mTable.fnSettings == 'function' ) |
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{ |
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mTable._oPluginFixedHeader = this; |
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} |
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}; |
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|
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|
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/* |
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* Variable: FixedHeader |
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* Purpose: Prototype for FixedHeader |
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* Scope: global |
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*/ |
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FixedHeader.prototype = { |
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
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* Initialisation |
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*/ |
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|
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/* |
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* Function: fnInit |
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* Purpose: The "constructor" |
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* Returns: - |
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* Inputs: {as FixedHeader function} |
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*/ |
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fnInit: function ( oTable, oInit ) |
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{ |
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var s = this.fnGetSettings(); |
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var that = this; |
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|
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/* Record the user definable settings */ |
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this.fnInitSettings( s, oInit ); |
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|
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/* DataTables specific stuff */ |
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if ( typeof oTable.fnSettings == 'function' ) |
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{ |
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if ( typeof oTable.fnVersionCheck == 'functon' && |
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oTable.fnVersionCheck( '1.6.0' ) !== true ) |
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{ |
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alert( "FixedHeader 2 required DataTables 1.6.0 or later. "+ |
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"Please upgrade your DataTables installation" ); |
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return; |
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} |
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|
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var oDtSettings = oTable.fnSettings(); |
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|
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if ( oDtSettings.oScroll.sX != "" || oDtSettings.oScroll.sY != "" ) |
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{ |
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alert( "FixedHeader 2 is not supported with DataTables' scrolling mode at this time" ); |
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return; |
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} |
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|
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s.nTable = oDtSettings.nTable; |
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oDtSettings.aoDrawCallback.push( { |
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"fn": function () { |
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FixedHeader.fnMeasure(); |
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that._fnUpdateClones.call(that); |
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that._fnUpdatePositions.call(that); |
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}, |
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"sName": "FixedHeader" |
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} ); |
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} |
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else |
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{ |
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s.nTable = oTable; |
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} |
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|
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s.bFooter = ($('>tfoot', s.nTable).length > 0) ? true : false; |
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|
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/* "Detect" browsers that don't support absolute positioing - or have bugs */ |
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s.bUseAbsPos = (jQuery.browser.msie && (jQuery.browser.version=="6.0"||jQuery.browser.version=="7.0")); |
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|
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/* Add the 'sides' that are fixed */ |
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if ( s.oSides.top ) |
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{ |
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s.aoCache.push( that._fnCloneTable( "fixedHeader", "FixedHeader_Header", that._fnCloneThead ) ); |
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} |
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if ( s.oSides.bottom ) |
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{ |
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s.aoCache.push( that._fnCloneTable( "fixedFooter", "FixedHeader_Footer", that._fnCloneTfoot ) ); |
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} |
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if ( s.oSides.left ) |
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{ |
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s.aoCache.push( that._fnCloneTable( "fixedLeft", "FixedHeader_Left", that._fnCloneTLeft ) ); |
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} |
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if ( s.oSides.right ) |
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{ |
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s.aoCache.push( that._fnCloneTable( "fixedRight", "FixedHeader_Right", that._fnCloneTRight ) ); |
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} |
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|
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/* Event listeners for window movement */ |
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FixedHeader.afnScroll.push( function () { |
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that._fnUpdatePositions.call(that); |
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} ); |
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|
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jQuery(window).resize( function () { |
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FixedHeader.fnMeasure(); |
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that._fnUpdateClones.call(that); |
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that._fnUpdatePositions.call(that); |
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} ); |
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|
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/* Get things right to start with */ |
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FixedHeader.fnMeasure(); |
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that._fnUpdateClones(); |
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that._fnUpdatePositions(); |
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}, |
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|
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|
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
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* Support functions |
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*/ |
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|
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/* |
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* Function: fnInitSettings |
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* Purpose: Take the user's settings and copy them to our local store |
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* Returns: - |
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* Inputs: object:s - the local settings object |
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* object:oInit - the user's settings object |
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*/ |
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fnInitSettings: function ( s, oInit ) |
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{ |
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if ( typeof oInit != 'undefined' ) |
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{ |
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if ( typeof oInit.top != 'undefined' ) { |
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s.oSides.top = oInit.top; |
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} |
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if ( typeof oInit.bottom != 'undefined' ) { |
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s.oSides.bottom = oInit.bottom; |
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} |
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if ( typeof oInit.left != 'undefined' ) { |
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s.oSides.left = oInit.left; |
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} |
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if ( typeof oInit.right != 'undefined' ) { |
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s.oSides.right = oInit.right; |
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} |
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|
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if ( typeof oInit.zTop != 'undefined' ) { |
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s.oZIndexes.top = oInit.zTop; |
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} |
| 248 |
if ( typeof oInit.zBottom != 'undefined' ) { |
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s.oZIndexes.bottom = oInit.zBottom; |
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} |
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if ( typeof oInit.zLeft != 'undefined' ) { |
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s.oZIndexes.left = oInit.zLeft; |
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} |
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if ( typeof oInit.zRight != 'undefined' ) { |
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s.oZIndexes.right = oInit.zRight; |
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} |
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|
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if ( typeof oInit.offsetTop != 'undefined' ) { |
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s.oOffset.top = oInit.offsetTop; |
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} |
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} |
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|
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/* Detect browsers which have poor position:fixed support so we can use absolute positions. |
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* This is much slower since the position must be updated for each scroll, but widens |
| 265 |
* compatibility |
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*/ |
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s.bUseAbsPos = (jQuery.browser.msie && |
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(jQuery.browser.version=="6.0"||jQuery.browser.version=="7.0")); |
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}, |
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|
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/* |
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* Function: _fnCloneTable |
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* Purpose: Clone the table node and do basic initialisation |
| 274 |
* Returns: - |
| 275 |
* Inputs: - |
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*/ |
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_fnCloneTable: function ( sType, sClass, fnClone ) |
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{ |
| 279 |
var s = this.fnGetSettings(); |
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var nCTable; |
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|
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/* We know that the table _MUST_ has a DIV wrapped around it, because this is simply how |
| 283 |
* DataTables works. Therefore, we can set this to be relatively position (if it is not |
| 284 |
* alreadu absolute, and use this as the base point for the cloned header |
| 285 |
*/ |
| 286 |
if ( jQuery(s.nTable.parentNode).css('position') != "absolute" ) |
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{ |
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s.nTable.parentNode.style.position = "relative"; |
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} |
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|
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/* Just a shallow clone will do - we only want the table node */ |
| 292 |
nCTable = s.nTable.cloneNode( false ); |
| 293 |
nCTable.removeAttribute( 'id' ); |
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|
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var nDiv = document.createElement( 'div' ); |
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nDiv.style.position = "absolute"; |
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nDiv.style.top = "0px"; |
| 298 |
nDiv.style.left = "0px"; |
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nDiv.className += " FixedHeader_Cloned "+sType+" "+sClass; |
| 300 |
|
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/* Set the zIndexes */ |
| 302 |
if ( sType == "fixedHeader" ) |
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{ |
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nDiv.style.zIndex = s.oZIndexes.top; |
| 305 |
} |
| 306 |
if ( sType == "fixedFooter" ) |
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{ |
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nDiv.style.zIndex = s.oZIndexes.bottom; |
| 309 |
} |
| 310 |
if ( sType == "fixedLeft" ) |
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{ |
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nDiv.style.zIndex = s.oZIndexes.left; |
| 313 |
} |
| 314 |
else if ( sType == "fixedRight" ) |
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{ |
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nDiv.style.zIndex = s.oZIndexes.right; |
| 317 |
} |
| 318 |
|
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/* remove margins since we are going to poistion it absolutely */ |
| 320 |
nCTable.style.margin = "0"; |
| 321 |
|
| 322 |
/* Insert the newly cloned table into the DOM, on top of the "real" header */ |
| 323 |
nDiv.appendChild( nCTable ); |
| 324 |
document.body.appendChild( nDiv ); |
| 325 |
|
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return { |
| 327 |
"nNode": nCTable, |
| 328 |
"nWrapper": nDiv, |
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"sType": sType, |
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"sPosition": "", |
| 331 |
"sTop": "", |
| 332 |
"sLeft": "", |
| 333 |
"fnClone": fnClone |
| 334 |
}; |
| 335 |
}, |
| 336 |
|
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/* |
| 338 |
* Function: _fnUpdatePositions |
| 339 |
* Purpose: Get the current positioning of the table in the DOM |
| 340 |
* Returns: - |
| 341 |
* Inputs: - |
| 342 |
*/ |
| 343 |
_fnMeasure: function () |
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{ |
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var |
| 346 |
s = this.fnGetSettings(), |
| 347 |
m = s.oMes, |
| 348 |
jqTable = jQuery(s.nTable), |
| 349 |
oOffset = jqTable.offset(), |
| 350 |
iParentScrollTop = this._fnSumScroll( s.nTable.parentNode, 'scrollTop' ), |
| 351 |
iParentScrollLeft = this._fnSumScroll( s.nTable.parentNode, 'scrollLeft' ); |
| 352 |
|
| 353 |
m.iTableWidth = jqTable.outerWidth(); |
| 354 |
m.iTableHeight = jqTable.outerHeight(); |
| 355 |
m.iTableLeft = oOffset.left + s.nTable.parentNode.scrollLeft; |
| 356 |
m.iTableTop = oOffset.top + iParentScrollTop; |
| 357 |
m.iTableRight = m.iTableLeft + m.iTableWidth; |
| 358 |
m.iTableRight = FixedHeader.oDoc.iWidth - m.iTableLeft - m.iTableWidth; |
| 359 |
m.iTableBottom = FixedHeader.oDoc.iHeight - m.iTableTop - m.iTableHeight; |
| 360 |
}, |
| 361 |
|
| 362 |
/* |
| 363 |
* Function: _fnSumScroll |
| 364 |
* Purpose: Sum node parameters all the way to the top |
| 365 |
* Returns: int: sum |
| 366 |
* Inputs: node:n - node to consider |
| 367 |
* string:side - scrollTop or scrollLeft |
| 368 |
*/ |
| 369 |
_fnSumScroll: function ( n, side ) |
| 370 |
{ |
| 371 |
var i = n[side]; |
| 372 |
while ( n = n.parentNode ) |
| 373 |
{ |
| 374 |
if ( n.nodeName == 'HTML' || n.nodeName == 'BODY' ) |
| 375 |
{ |
| 376 |
break; |
| 377 |
} |
| 378 |
i = n[side]; |
| 379 |
} |
| 380 |
return i; |
| 381 |
}, |
| 382 |
|
| 383 |
/* |
| 384 |
* Function: _fnUpdatePositions |
| 385 |
* Purpose: Loop over the fixed elements for this table and update their positions |
| 386 |
* Returns: - |
| 387 |
* Inputs: - |
| 388 |
*/ |
| 389 |
_fnUpdatePositions: function () |
| 390 |
{ |
| 391 |
var s = this.fnGetSettings(); |
| 392 |
this._fnMeasure(); |
| 393 |
|
| 394 |
for ( var i=0, iLen=s.aoCache.length ; i<iLen ; i++ ) |
| 395 |
{ |
| 396 |
if ( s.aoCache[i].sType == "fixedHeader" ) |
| 397 |
{ |
| 398 |
this._fnScrollFixedHeader( s.aoCache[i] ); |
| 399 |
} |
| 400 |
else if ( s.aoCache[i].sType == "fixedFooter" ) |
| 401 |
{ |
| 402 |
this._fnScrollFixedFooter( s.aoCache[i] ); |
| 403 |
} |
| 404 |
else if ( s.aoCache[i].sType == "fixedLeft" ) |
| 405 |
{ |
| 406 |
this._fnScrollHorizontalLeft( s.aoCache[i] ); |
| 407 |
} |
| 408 |
else |
| 409 |
{ |
| 410 |
this._fnScrollHorizontalRight( s.aoCache[i] ); |
| 411 |
} |
| 412 |
} |
| 413 |
}, |
| 414 |
|
| 415 |
/* |
| 416 |
* Function: _fnUpdateClones |
| 417 |
* Purpose: Loop over the fixed elements for this table and call their cloning functions |
| 418 |
* Returns: - |
| 419 |
* Inputs: - |
| 420 |
*/ |
| 421 |
_fnUpdateClones: function () |
| 422 |
{ |
| 423 |
var s = this.fnGetSettings(); |
| 424 |
for ( var i=0, iLen=s.aoCache.length ; i<iLen ; i++ ) |
| 425 |
{ |
| 426 |
s.aoCache[i].fnClone.call( this, s.aoCache[i] ); |
| 427 |
} |
| 428 |
}, |
| 429 |
|
| 430 |
|
| 431 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 432 |
* Scrolling functions |
| 433 |
*/ |
| 434 |
|
| 435 |
/* |
| 436 |
* Function: _fnScrollHorizontalLeft |
| 437 |
* Purpose: Update the positioning of the scrolling elements |
| 438 |
* Returns: - |
| 439 |
* Inputs: object:oCache - the cahced values for this fixed element |
| 440 |
*/ |
| 441 |
_fnScrollHorizontalRight: function ( oCache ) |
| 442 |
{ |
| 443 |
var |
| 444 |
s = this.fnGetSettings(), |
| 445 |
oMes = s.oMes, |
| 446 |
oWin = FixedHeader.oWin, |
| 447 |
oDoc = FixedHeader.oDoc, |
| 448 |
nTable = oCache.nWrapper, |
| 449 |
iFixedWidth = jQuery(nTable).outerWidth(); |
| 450 |
|
| 451 |
if ( oWin.iScrollRight < oMes.iTableRight ) |
| 452 |
{ |
| 453 |
/* Fully right aligned */ |
| 454 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 455 |
this._fnUpdateCache( oCache, 'sTop', oMes.iTableTop+"px", 'top', nTable.style ); |
| 456 |
this._fnUpdateCache( oCache, 'sLeft', (oMes.iTableLeft+oMes.iTableWidth-iFixedWidth)+"px", 'left', nTable.style ); |
| 457 |
} |
| 458 |
else if ( oMes.iTableLeft < oDoc.iWidth-oWin.iScrollRight-iFixedWidth ) |
| 459 |
{ |
| 460 |
/* Middle */ |
| 461 |
if ( s.bUseAbsPos ) |
| 462 |
{ |
| 463 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 464 |
this._fnUpdateCache( oCache, 'sTop', oMes.iTableTop+"px", 'top', nTable.style ); |
| 465 |
this._fnUpdateCache( oCache, 'sLeft', (oDoc.iWidth-oWin.iScrollRight-iFixedWidth)+"px", 'left', nTable.style ); |
| 466 |
} |
| 467 |
else |
| 468 |
{ |
| 469 |
this._fnUpdateCache( oCache, 'sPosition', 'fixed', 'position', nTable.style ); |
| 470 |
this._fnUpdateCache( oCache, 'sTop', (oMes.iTableTop-oWin.iScrollTop)+"px", 'top', nTable.style ); |
| 471 |
this._fnUpdateCache( oCache, 'sLeft', (oWin.iWidth-iFixedWidth)+"px", 'left', nTable.style ); |
| 472 |
} |
| 473 |
} |
| 474 |
else |
| 475 |
{ |
| 476 |
/* Fully left aligned */ |
| 477 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 478 |
this._fnUpdateCache( oCache, 'sTop', oMes.iTableTop+"px", 'top', nTable.style ); |
| 479 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 480 |
} |
| 481 |
}, |
| 482 |
|
| 483 |
/* |
| 484 |
* Function: _fnScrollHorizontalLeft |
| 485 |
* Purpose: Update the positioning of the scrolling elements |
| 486 |
* Returns: - |
| 487 |
* Inputs: object:oCache - the cahced values for this fixed element |
| 488 |
*/ |
| 489 |
_fnScrollHorizontalLeft: function ( oCache ) |
| 490 |
{ |
| 491 |
var |
| 492 |
s = this.fnGetSettings(), |
| 493 |
oMes = s.oMes, |
| 494 |
oWin = FixedHeader.oWin, |
| 495 |
oDoc = FixedHeader.oDoc, |
| 496 |
nTable = oCache.nWrapper, |
| 497 |
iCellWidth = jQuery(nTable).outerWidth(); |
| 498 |
|
| 499 |
if ( oWin.iScrollLeft < oMes.iTableLeft ) |
| 500 |
{ |
| 501 |
/* Fully left align */ |
| 502 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 503 |
this._fnUpdateCache( oCache, 'sTop', oMes.iTableTop+"px", 'top', nTable.style ); |
| 504 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 505 |
} |
| 506 |
else if ( oWin.iScrollLeft < oMes.iTableLeft+oMes.iTableWidth-iCellWidth ) |
| 507 |
{ |
| 508 |
/* Middle */ |
| 509 |
if ( s.bUseAbsPos ) |
| 510 |
{ |
| 511 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 512 |
this._fnUpdateCache( oCache, 'sTop', oMes.iTableTop+"px", 'top', nTable.style ); |
| 513 |
this._fnUpdateCache( oCache, 'sLeft', oWin.iScrollLeft+"px", 'left', nTable.style ); |
| 514 |
} |
| 515 |
else |
| 516 |
{ |
| 517 |
this._fnUpdateCache( oCache, 'sPosition', 'fixed', 'position', nTable.style ); |
| 518 |
this._fnUpdateCache( oCache, 'sTop', (oMes.iTableTop-oWin.iScrollTop)+"px", 'top', nTable.style ); |
| 519 |
this._fnUpdateCache( oCache, 'sLeft', "0px", 'left', nTable.style ); |
| 520 |
} |
| 521 |
} |
| 522 |
else |
| 523 |
{ |
| 524 |
/* Fully right align */ |
| 525 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 526 |
this._fnUpdateCache( oCache, 'sTop', oMes.iTableTop+"px", 'top', nTable.style ); |
| 527 |
this._fnUpdateCache( oCache, 'sLeft', (oMes.iTableLeft+oMes.iTableWidth-iCellWidth)+"px", 'left', nTable.style ); |
| 528 |
} |
| 529 |
}, |
| 530 |
|
| 531 |
/* |
| 532 |
* Function: _fnScrollFixedFooter |
| 533 |
* Purpose: Update the positioning of the scrolling elements |
| 534 |
* Returns: - |
| 535 |
* Inputs: object:oCache - the cahced values for this fixed element |
| 536 |
*/ |
| 537 |
_fnScrollFixedFooter: function ( oCache ) |
| 538 |
{ |
| 539 |
var |
| 540 |
s = this.fnGetSettings(), |
| 541 |
oMes = s.oMes, |
| 542 |
oWin = FixedHeader.oWin, |
| 543 |
oDoc = FixedHeader.oDoc, |
| 544 |
nTable = oCache.nWrapper, |
| 545 |
iTheadHeight = jQuery("thead", s.nTable).outerHeight(), |
| 546 |
iCellHeight = jQuery(nTable).outerHeight(); |
| 547 |
|
| 548 |
if ( oWin.iScrollBottom < oMes.iTableBottom ) |
| 549 |
{ |
| 550 |
/* Below */ |
| 551 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 552 |
this._fnUpdateCache( oCache, 'sTop', (oMes.iTableTop+oMes.iTableHeight-iCellHeight)+"px", 'top', nTable.style ); |
| 553 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 554 |
} |
| 555 |
else if ( oWin.iScrollBottom < oMes.iTableBottom+oMes.iTableHeight-iCellHeight-iTheadHeight ) |
| 556 |
{ |
| 557 |
/* Middle */ |
| 558 |
if ( s.bUseAbsPos ) |
| 559 |
{ |
| 560 |
this._fnUpdateCache( oCache, 'sPosition', "absolute", 'position', nTable.style ); |
| 561 |
this._fnUpdateCache( oCache, 'sTop', (oDoc.iHeight-oWin.iScrollBottom-iCellHeight)+"px", 'top', nTable.style ); |
| 562 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 563 |
} |
| 564 |
else |
| 565 |
{ |
| 566 |
this._fnUpdateCache( oCache, 'sPosition', 'fixed', 'position', nTable.style ); |
| 567 |
this._fnUpdateCache( oCache, 'sTop', (oWin.iHeight-iCellHeight)+"px", 'top', nTable.style ); |
| 568 |
this._fnUpdateCache( oCache, 'sLeft', (oMes.iTableLeft-oWin.iScrollLeft)+"px", 'left', nTable.style ); |
| 569 |
} |
| 570 |
} |
| 571 |
else |
| 572 |
{ |
| 573 |
/* Above */ |
| 574 |
this._fnUpdateCache( oCache, 'sPosition', 'absolute', 'position', nTable.style ); |
| 575 |
this._fnUpdateCache( oCache, 'sTop', (oMes.iTableTop+iCellHeight)+"px", 'top', nTable.style ); |
| 576 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 577 |
} |
| 578 |
}, |
| 579 |
|
| 580 |
/* |
| 581 |
* Function: _fnScrollFixedHeader |
| 582 |
* Purpose: Update the positioning of the scrolling elements |
| 583 |
* Returns: - |
| 584 |
* Inputs: object:oCache - the cahced values for this fixed element |
| 585 |
*/ |
| 586 |
_fnScrollFixedHeader: function ( oCache ) |
| 587 |
{ |
| 588 |
var |
| 589 |
s = this.fnGetSettings(), |
| 590 |
oMes = s.oMes, |
| 591 |
oWin = FixedHeader.oWin, |
| 592 |
oDoc = FixedHeader.oDoc, |
| 593 |
nTable = oCache.nWrapper, |
| 594 |
iTbodyHeight = 0, |
| 595 |
anTbodies = s.nTable.getElementsByTagName('tbody'); |
| 596 |
|
| 597 |
for (var i = 0; i < anTbodies.length; ++i) { |
| 598 |
iTbodyHeight += anTbodies[i].offsetHeight; |
| 599 |
} |
| 600 |
|
| 601 |
if ( oMes.iTableTop > oWin.iScrollTop + s.oOffset.top ) |
| 602 |
{ |
| 603 |
/* Above the table */ |
| 604 |
this._fnUpdateCache( oCache, 'sPosition', "absolute", 'position', nTable.style ); |
| 605 |
this._fnUpdateCache( oCache, 'sTop', oMes.iTableTop+"px", 'top', nTable.style ); |
| 606 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 607 |
} |
| 608 |
else if ( oWin.iScrollTop + s.oOffset.top > oMes.iTableTop+iTbodyHeight ) |
| 609 |
{ |
| 610 |
/* At the bottom of the table */ |
| 611 |
this._fnUpdateCache( oCache, 'sPosition', "absolute", 'position', nTable.style ); |
| 612 |
this._fnUpdateCache( oCache, 'sTop', (oMes.iTableTop+iTbodyHeight)+"px", 'top', nTable.style ); |
| 613 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 614 |
} |
| 615 |
else |
| 616 |
{ |
| 617 |
/* In the middle of the table */ |
| 618 |
if ( s.bUseAbsPos ) |
| 619 |
{ |
| 620 |
this._fnUpdateCache( oCache, 'sPosition', "absolute", 'position', nTable.style ); |
| 621 |
this._fnUpdateCache( oCache, 'sTop', oWin.iScrollTop+"px", 'top', nTable.style ); |
| 622 |
this._fnUpdateCache( oCache, 'sLeft', oMes.iTableLeft+"px", 'left', nTable.style ); |
| 623 |
} |
| 624 |
else |
| 625 |
{ |
| 626 |
this._fnUpdateCache( oCache, 'sPosition', 'fixed', 'position', nTable.style ); |
| 627 |
this._fnUpdateCache( oCache, 'sTop', s.oOffset.top+"px", 'top', nTable.style ); |
| 628 |
this._fnUpdateCache( oCache, 'sLeft', (oMes.iTableLeft-oWin.iScrollLeft)+"px", 'left', nTable.style ); |
| 629 |
} |
| 630 |
} |
| 631 |
}, |
| 632 |
|
| 633 |
/* |
| 634 |
* Function: _fnUpdateCache |
| 635 |
* Purpose: Check the cache and update cache and value if needed |
| 636 |
* Returns: - |
| 637 |
* Inputs: object:oCache - local cache object |
| 638 |
* string:sCache - cache property |
| 639 |
* string:sSet - value to set |
| 640 |
* string:sProperty - object property to set |
| 641 |
* object:oObj - object to update |
| 642 |
*/ |
| 643 |
_fnUpdateCache: function ( oCache, sCache, sSet, sProperty, oObj ) |
| 644 |
{ |
| 645 |
if ( oCache[sCache] != sSet ) |
| 646 |
{ |
| 647 |
oObj[sProperty] = sSet; |
| 648 |
oCache[sCache] = sSet; |
| 649 |
} |
| 650 |
}, |
| 651 |
|
| 652 |
|
| 653 |
|
| 654 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 655 |
* Cloning functions |
| 656 |
*/ |
| 657 |
|
| 658 |
/* |
| 659 |
* Function: _fnCloneThead |
| 660 |
* Purpose: Clone the thead element |
| 661 |
* Returns: - |
| 662 |
* Inputs: object:oCache - the cahced values for this fixed element |
| 663 |
*/ |
| 664 |
_fnCloneThead: function ( oCache ) |
| 665 |
{ |
| 666 |
var s = this.fnGetSettings(); |
| 667 |
var nTable = oCache.nNode; |
| 668 |
|
| 669 |
/* Set the wrapper width to match that of the cloned table */ |
| 670 |
oCache.nWrapper.style.width = jQuery(s.nTable).outerWidth()+"px"; |
| 671 |
|
| 672 |
/* Remove any children the cloned table has */ |
| 673 |
while ( nTable.childNodes.length > 0 ) |
| 674 |
{ |
| 675 |
jQuery('thead th', nTable).unbind( 'click' ); |
| 676 |
nTable.removeChild( nTable.childNodes[0] ); |
| 677 |
} |
| 678 |
|
| 679 |
/* Clone the DataTables header */ |
| 680 |
var nThead = jQuery('thead', s.nTable).clone(true)[0]; |
| 681 |
nTable.appendChild( nThead ); |
| 682 |
|
| 683 |
/* Copy the widths across - apparently a clone isn't good enough for this */ |
| 684 |
jQuery("thead>tr th", s.nTable).each( function (i) { |
| 685 |
jQuery("thead>tr th:eq("+i+")", nTable).width( jQuery(this).width() ); |
| 686 |
} ); |
| 687 |
|
| 688 |
jQuery("thead>tr td", s.nTable).each( function (i) { |
| 689 |
jQuery("thead>tr td:eq("+i+")", nTable).width( jQuery(this).width() ); |
| 690 |
} ); |
| 691 |
}, |
| 692 |
|
| 693 |
/* |
| 694 |
* Function: _fnCloneTfoot |
| 695 |
* Purpose: Clone the tfoot element |
| 696 |
* Returns: - |
| 697 |
* Inputs: object:oCache - the cahced values for this fixed element |
| 698 |
*/ |
| 699 |
_fnCloneTfoot: function ( oCache ) |
| 700 |
{ |
| 701 |
var s = this.fnGetSettings(); |
| 702 |
var nTable = oCache.nNode; |
| 703 |
|
| 704 |
/* Set the wrapper width to match that of the cloned table */ |
| 705 |
oCache.nWrapper.style.width = jQuery(s.nTable).outerWidth()+"px"; |
| 706 |
|
| 707 |
/* Remove any children the cloned table has */ |
| 708 |
while ( nTable.childNodes.length > 0 ) |
| 709 |
{ |
| 710 |
nTable.removeChild( nTable.childNodes[0] ); |
| 711 |
} |
| 712 |
|
| 713 |
/* Clone the DataTables footer */ |
| 714 |
var nTfoot = jQuery('tfoot', s.nTable).clone(true)[0]; |
| 715 |
nTable.appendChild( nTfoot ); |
| 716 |
|
| 717 |
/* Copy the widths across - apparently a clone isn't good enough for this */ |
| 718 |
jQuery("tfoot:eq(0)>tr th", s.nTable).each( function (i) { |
| 719 |
jQuery("tfoot:eq(0)>tr th:eq("+i+")", nTable).width( jQuery(this).width() ); |
| 720 |
} ); |
| 721 |
|
| 722 |
jQuery("tfoot:eq(0)>tr td", s.nTable).each( function (i) { |
| 723 |
jQuery("tfoot:eq(0)>tr th:eq("+i+")", nTable)[0].style.width( jQuery(this).width() ); |
| 724 |
} ); |
| 725 |
}, |
| 726 |
|
| 727 |
/* |
| 728 |
* Function: _fnCloneTLeft |
| 729 |
* Purpose: Clone the left column |
| 730 |
* Returns: - |
| 731 |
* Inputs: object:oCache - the cached values for this fixed element |
| 732 |
*/ |
| 733 |
_fnCloneTLeft: function ( oCache ) |
| 734 |
{ |
| 735 |
var s = this.fnGetSettings(); |
| 736 |
var nTable = oCache.nNode; |
| 737 |
var nBody = $('tbody', s.nTable)[0]; |
| 738 |
var iCols = $('tbody tr:eq(0) td', s.nTable).length; |
| 739 |
var bRubbishOldIE = ($.browser.msie && ($.browser.version == "6.0" || $.browser.version == "7.0")); |
| 740 |
|
| 741 |
/* Remove any children the cloned table has */ |
| 742 |
while ( nTable.childNodes.length > 0 ) |
| 743 |
{ |
| 744 |
nTable.removeChild( nTable.childNodes[0] ); |
| 745 |
} |
| 746 |
|
| 747 |
/* Is this the most efficient way to do this - it looks horrible... */ |
| 748 |
nTable.appendChild( jQuery("thead", s.nTable).clone(true)[0] ); |
| 749 |
nTable.appendChild( jQuery("tbody", s.nTable).clone(true)[0] ); |
| 750 |
if ( s.bFooter ) |
| 751 |
{ |
| 752 |
nTable.appendChild( jQuery("tfoot", s.nTable).clone(true)[0] ); |
| 753 |
} |
| 754 |
|
| 755 |
/* Remove unneeded cells */ |
| 756 |
$('thead tr', nTable).each( function (k) { |
| 757 |
$('th:gt(0)', this).remove(); |
| 758 |
} ); |
| 759 |
|
| 760 |
$('tfoot tr', nTable).each( function (k) { |
| 761 |
$('th:gt(0)', this).remove(); |
| 762 |
} ); |
| 763 |
|
| 764 |
$('tbody tr', nTable).each( function (k) { |
| 765 |
$('td:gt(0)', this).remove(); |
| 766 |
} ); |
| 767 |
|
| 768 |
this.fnEqualiseHeights( 'tbody', nBody.parentNode, nTable ); |
| 769 |
|
| 770 |
var iWidth = jQuery('thead tr th:eq(0)', s.nTable).outerWidth(); |
| 771 |
nTable.style.width = iWidth+"px"; |
| 772 |
oCache.nWrapper.style.width = iWidth+"px"; |
| 773 |
}, |
| 774 |
|
| 775 |
/* |
| 776 |
* Function: _fnCloneTRight |
| 777 |
* Purpose: Clone the right most colun |
| 778 |
* Returns: - |
| 779 |
* Inputs: object:oCache - the cahced values for this fixed element |
| 780 |
*/ |
| 781 |
_fnCloneTRight: function ( oCache ) |
| 782 |
{ |
| 783 |
var s = this.fnGetSettings(); |
| 784 |
var nBody = $('tbody', s.nTable)[0]; |
| 785 |
var nTable = oCache.nNode; |
| 786 |
var iCols = jQuery('tbody tr:eq(0) td', s.nTable).length; |
| 787 |
var bRubbishOldIE = ($.browser.msie && ($.browser.version == "6.0" || $.browser.version == "7.0")); |
| 788 |
|
| 789 |
/* Remove any children the cloned table has */ |
| 790 |
while ( nTable.childNodes.length > 0 ) |
| 791 |
{ |
| 792 |
nTable.removeChild( nTable.childNodes[0] ); |
| 793 |
} |
| 794 |
|
| 795 |
/* Is this the most efficient way to do this - it looks horrible... */ |
| 796 |
nTable.appendChild( jQuery("thead", s.nTable).clone(true)[0] ); |
| 797 |
nTable.appendChild( jQuery("tbody", s.nTable).clone(true)[0] ); |
| 798 |
if ( s.bFooter ) |
| 799 |
{ |
| 800 |
nTable.appendChild( jQuery("tfoot", s.nTable).clone(true)[0] ); |
| 801 |
} |
| 802 |
jQuery('thead tr th:not(:nth-child('+iCols+'n))', nTable).remove(); |
| 803 |
jQuery('tfoot tr th:not(:nth-child('+iCols+'n))', nTable).remove(); |
| 804 |
|
| 805 |
/* Remove unneeded cells */ |
| 806 |
$('tbody tr', nTable).each( function (k) { |
| 807 |
$('td:lt('+(iCols-1)+')', this).remove(); |
| 808 |
} ); |
| 809 |
|
| 810 |
this.fnEqualiseHeights( 'tbody', nBody.parentNode, nTable ); |
| 811 |
|
| 812 |
var iWidth = jQuery('thead tr th:eq('+(iCols-1)+')', s.nTable).outerWidth(); |
| 813 |
nTable.style.width = iWidth+"px"; |
| 814 |
oCache.nWrapper.style.width = iWidth+"px"; |
| 815 |
}, |
| 816 |
|
| 817 |
|
| 818 |
/** |
| 819 |
* Equalise the heights of the rows in a given table node in a cross browser way. Note that this |
| 820 |
* is more or less lifted as is from FixedColumns |
| 821 |
* @method fnEqualiseHeights |
| 822 |
* @returns void |
| 823 |
* @param {string} parent Node type - thead, tbody or tfoot |
| 824 |
* @param {element} original Original node to take the heights from |
| 825 |
* @param {element} clone Copy the heights to |
| 826 |
* @private |
| 827 |
*/ |
| 828 |
"fnEqualiseHeights": function ( parent, original, clone ) |
| 829 |
{ |
| 830 |
var that = this, |
| 831 |
jqBoxHack = $(parent+' tr:eq(0)', original).children(':eq(0)'), |
| 832 |
iBoxHack = jqBoxHack.outerHeight() - jqBoxHack.height(), |
| 833 |
bRubbishOldIE = ($.browser.msie && ($.browser.version == "6.0" || $.browser.version == "7.0")); |
| 834 |
|
| 835 |
/* Remove cells which are not needed and copy the height from the original table */ |
| 836 |
$(parent+' tr', clone).each( function (k) { |
| 837 |
/* Can we use some kind of object detection here?! This is very nasty - damn browsers */ |
| 838 |
if ( $.browser.mozilla || $.browser.opera ) |
| 839 |
{ |
| 840 |
$(this).children().height( $(parent+' tr:eq('+k+')', original).outerHeight() ); |
| 841 |
} |
| 842 |
else |
| 843 |
{ |
| 844 |
$(this).children().height( $(parent+' tr:eq('+k+')', original).outerHeight() - iBoxHack ); |
| 845 |
} |
| 846 |
|
| 847 |
if ( !bRubbishOldIE ) |
| 848 |
{ |
| 849 |
$(parent+' tr:eq('+k+')', original).height( $(parent+' tr:eq('+k+')', original).outerHeight() ); |
| 850 |
} |
| 851 |
} ); |
| 852 |
} |
| 853 |
}; |
| 854 |
|
| 855 |
|
| 856 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 857 |
* Static properties and methods |
| 858 |
* We use these for speed! This information is common to all instances of FixedHeader, so no |
| 859 |
* point if having them calculated and stored for each different instance. |
| 860 |
*/ |
| 861 |
|
| 862 |
/* |
| 863 |
* Variable: oWin |
| 864 |
* Purpose: Store information about the window positioning |
| 865 |
* Scope: FixedHeader |
| 866 |
*/ |
| 867 |
FixedHeader.oWin = { |
| 868 |
"iScrollTop": 0, |
| 869 |
"iScrollRight": 0, |
| 870 |
"iScrollBottom": 0, |
| 871 |
"iScrollLeft": 0, |
| 872 |
"iHeight": 0, |
| 873 |
"iWidth": 0 |
| 874 |
}; |
| 875 |
|
| 876 |
/* |
| 877 |
* Variable: oDoc |
| 878 |
* Purpose: Store information about the document size |
| 879 |
* Scope: FixedHeader |
| 880 |
*/ |
| 881 |
FixedHeader.oDoc = { |
| 882 |
"iHeight": 0, |
| 883 |
"iWidth": 0 |
| 884 |
}; |
| 885 |
|
| 886 |
/* |
| 887 |
* Variable: afnScroll |
| 888 |
* Purpose: Array of functions that are to be used for the scrolling components |
| 889 |
* Scope: FixedHeader |
| 890 |
*/ |
| 891 |
FixedHeader.afnScroll = []; |
| 892 |
|
| 893 |
/* |
| 894 |
* Function: fnMeasure |
| 895 |
* Purpose: Update the measurements for the window and document |
| 896 |
* Returns: - |
| 897 |
* Inputs: - |
| 898 |
*/ |
| 899 |
FixedHeader.fnMeasure = function () |
| 900 |
{ |
| 901 |
var |
| 902 |
jqWin = jQuery(window), |
| 903 |
jqDoc = jQuery(document), |
| 904 |
oWin = FixedHeader.oWin, |
| 905 |
oDoc = FixedHeader.oDoc; |
| 906 |
|
| 907 |
oDoc.iHeight = jqDoc.height(); |
| 908 |
oDoc.iWidth = jqDoc.width(); |
| 909 |
|
| 910 |
oWin.iHeight = jqWin.height(); |
| 911 |
oWin.iWidth = jqWin.width(); |
| 912 |
oWin.iScrollTop = jqWin.scrollTop(); |
| 913 |
oWin.iScrollLeft = jqWin.scrollLeft(); |
| 914 |
oWin.iScrollRight = oDoc.iWidth - oWin.iScrollLeft - oWin.iWidth; |
| 915 |
oWin.iScrollBottom = oDoc.iHeight - oWin.iScrollTop - oWin.iHeight; |
| 916 |
}; |
| 917 |
|
| 918 |
|
| 919 |
FixedHeader.VERSION = "2.0.6"; |
| 920 |
FixedHeader.prototype.VERSION = FixedHeader.VERSION; |
| 921 |
|
| 922 |
|
| 923 |
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * |
| 924 |
* Global processing |
| 925 |
*/ |
| 926 |
|
| 927 |
/* |
| 928 |
* Just one 'scroll' event handler in FixedHeader, which calls the required components. This is |
| 929 |
* done as an optimisation, to reduce calculation and proagation time |
| 930 |
*/ |
| 931 |
jQuery(window).scroll( function () { |
| 932 |
FixedHeader.fnMeasure(); |
| 933 |
for ( var i=0, iLen=FixedHeader.afnScroll.length ; i<iLen ; i++ ) |
| 934 |
{ |
| 935 |
FixedHeader.afnScroll[i](); |
| 936 |
} |
| 937 |
} ); |
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