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Add the Ajax core JS file (forgot to commit it before!)

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This commit is contained in:
Allan Jardine 2011-12-13 08:18:42 +00:00
parent 4e8f0fadd9
commit 3191ee098b
1 changed files with 184 additions and 0 deletions
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media/src/core/core.ajax.js Normal file
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/**
* Update the table using an Ajax call
* @param {object} oSettings dataTables settings object
* @returns {boolean} Block the table drawing or not
* @private
*/
function _fnAjaxUpdate( oSettings )
{
if ( oSettings.bAjaxDataGet )
{
oSettings.iDraw++;
_fnProcessingDisplay( oSettings, true );
var iColumns = oSettings.aoColumns.length;
var aoData = _fnAjaxParameters( oSettings );
_fnServerParams( oSettings, aoData );
oSettings.fnServerData.call( oSettings.oInstance, oSettings.sAjaxSource, aoData,
function(json) {
_fnAjaxUpdateDraw( oSettings, json );
}, oSettings );
return false;
}
else
{
return true;
}
}
/**
* Build up the parameters in an object needed for a server-side processing request
* @param {object} oSettings dataTables settings object
* @returns {bool} block the table drawing or not
* @private
*/
function _fnAjaxParameters( oSettings )
{
var iColumns = oSettings.aoColumns.length;
var aoData = [], mDataProp;
var i;
aoData.push( { "name": "sEcho", "value": oSettings.iDraw } );
aoData.push( { "name": "iColumns", "value": iColumns } );
aoData.push( { "name": "sColumns", "value": _fnColumnOrdering(oSettings) } );
aoData.push( { "name": "iDisplayStart", "value": oSettings._iDisplayStart } );
aoData.push( { "name": "iDisplayLength", "value": oSettings.oFeatures.bPaginate !== false ?
oSettings._iDisplayLength : -1 } );
for ( i=0 ; i<iColumns ; i++ )
{
mDataProp = oSettings.aoColumns[i].mDataProp;
aoData.push( { "name": "mDataProp_"+i, "value": typeof(mDataProp)=="function" ? 'function' : mDataProp } );
}
/* Filtering */
if ( oSettings.oFeatures.bFilter !== false )
{
aoData.push( { "name": "sSearch", "value": oSettings.oPreviousSearch.sSearch } );
aoData.push( { "name": "bRegex", "value": oSettings.oPreviousSearch.bRegex } );
for ( i=0 ; i<iColumns ; i++ )
{
aoData.push( { "name": "sSearch_"+i, "value": oSettings.aoPreSearchCols[i].sSearch } );
aoData.push( { "name": "bRegex_"+i, "value": oSettings.aoPreSearchCols[i].bRegex } );
aoData.push( { "name": "bSearchable_"+i, "value": oSettings.aoColumns[i].bSearchable } );
}
}
/* Sorting */
if ( oSettings.oFeatures.bSort !== false )
{
var iFixed = oSettings.aaSortingFixed !== null ? oSettings.aaSortingFixed.length : 0;
var iUser = oSettings.aaSorting.length;
aoData.push( { "name": "iSortingCols", "value": iFixed+iUser } );
for ( i=0 ; i<iFixed ; i++ )
{
aoData.push( { "name": "iSortCol_"+i, "value": oSettings.aaSortingFixed[i][0] } );
aoData.push( { "name": "sSortDir_"+i, "value": oSettings.aaSortingFixed[i][1] } );
}
for ( i=0 ; i<iUser ; i++ )
{
aoData.push( { "name": "iSortCol_"+(i+iFixed), "value": oSettings.aaSorting[i][0] } );
aoData.push( { "name": "sSortDir_"+(i+iFixed), "value": oSettings.aaSorting[i][1] } );
}
for ( i=0 ; i<iColumns ; i++ )
{
aoData.push( { "name": "bSortable_"+i, "value": oSettings.aoColumns[i].bSortable } );
}
}
return aoData;
}
/**
* Add Ajax parameters from plugins
* @param {object} oSettings dataTables settings object
* @param array {objects} aoData name/value pairs to send to the server
* @private
*/
function _fnServerParams( oSettings, aoData )
{
for ( var i=0, iLen=oSettings.aoServerParams.length ; i<iLen ; i++ )
{
oSettings.aoServerParams[i].fn.call( oSettings.oInstance, aoData );
}
}
/**
* Data the data from the server (nuking the old) and redraw the table
* @param {object} oSettings dataTables settings object
* @param {object} json json data return from the server.
* @param {string} json.sEcho Tracking flag for DataTables to match requests
* @param {int} json.iTotalRecords Number of records in the data set, not accounting for filtering
* @param {int} json.iTotalDisplayRecords Number of records in the data set, accounting for filtering
* @param {array} json.aaData The data to display on this page
* @param {string} [json.sColumns] Column ordering (sName, comma separated)
* @private
*/
function _fnAjaxUpdateDraw ( oSettings, json )
{
if ( typeof json.sEcho != 'undefined' )
{
/* Protect against old returns over-writing a new one. Possible when you get
* very fast interaction, and later queires are completed much faster
*/
if ( json.sEcho*1 < oSettings.iDraw )
{
return;
}
else
{
oSettings.iDraw = json.sEcho * 1;
}
}
if ( !oSettings.oScroll.bInfinite ||
(oSettings.oScroll.bInfinite && (oSettings.bSorted || oSettings.bFiltered)) )
{
_fnClearTable( oSettings );
}
oSettings._iRecordsTotal = parseInt(json.iTotalRecords, 10);
oSettings._iRecordsDisplay = parseInt(json.iTotalDisplayRecords, 10);
/* Determine if reordering is required */
var sOrdering = _fnColumnOrdering(oSettings);
var bReOrder = (typeof json.sColumns != 'undefined' && sOrdering !== "" && json.sColumns != sOrdering );
var aiIndex;
if ( bReOrder )
{
aiIndex = _fnReOrderIndex( oSettings, json.sColumns );
}
var aData = _fnGetObjectDataFn( oSettings.sAjaxDataProp )( json );
for ( var i=0, iLen=aData.length ; i<iLen ; i++ )
{
if ( bReOrder )
{
/* If we need to re-order, then create a new array with the correct order and add it */
var aDataSorted = [];
for ( var j=0, jLen=oSettings.aoColumns.length ; j<jLen ; j++ )
{
aDataSorted.push( aData[i][ aiIndex[j] ] );
}
_fnAddData( oSettings, aDataSorted );
}
else
{
/* No re-order required, sever got it "right" - just straight add */
_fnAddData( oSettings, aData[i] );
}
}
oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();
oSettings.bAjaxDataGet = false;
_fnDraw( oSettings );
oSettings.bAjaxDataGet = true;
_fnProcessingDisplay( oSettings, false );
}