--- /dev/null
+
+
+/**
+ * Generate the node required for filtering text
+ * @returns {node} Filter control element
+ * @param {object} oSettings dataTables settings object
+ * @memberof DataTable#oApi
+ */
+function _fnFeatureHtmlFilter ( oSettings )
+{
+ var oPreviousSearch = oSettings.oPreviousSearch;
+
+ var sSearchStr = oSettings.oLanguage.sSearch;
+ sSearchStr = (sSearchStr.indexOf('_INPUT_') !== -1) ?
+ sSearchStr.replace('_INPUT_', '<input type="text" />') :
+ sSearchStr==="" ? '<input type="text" />' : sSearchStr+' <input type="text" />';
+
+ var nFilter = document.createElement( 'div' );
+ nFilter.className = oSettings.oClasses.sFilter;
+ nFilter.innerHTML = '<label>'+sSearchStr+'</label>';
+ if ( !oSettings.aanFeatures.f )
+ {
+ nFilter.id = oSettings.sTableId+'_filter';
+ }
+
+ var jqFilter = $('input[type="text"]', nFilter);
+
+ // Store a reference to the input element, so other input elements could be
+ // added to the filter wrapper if needed (submit button for example)
+ nFilter._DT_Input = jqFilter[0];
+
+ jqFilter.val( oPreviousSearch.sSearch.replace('"','"') );
+ jqFilter.bind( 'keyup.DT', function(e) {
+ /* Update all other filter input elements for the new display */
+ var n = oSettings.aanFeatures.f;
+ var val = this.value==="" ? "" : this.value; // mental IE8 fix :-(
+
+ for ( var i=0, iLen=n.length ; i<iLen ; i++ )
+ {
+ if ( n[i] != $(this).parents('div.dataTables_filter')[0] )
+ {
+ $(n[i]._DT_Input).val( val );
+ }
+ }
+
+ /* Now do the filter */
+ if ( val != oPreviousSearch.sSearch )
+ {
+ _fnFilterComplete( oSettings, {
+ "sSearch": val,
+ "bRegex": oPreviousSearch.bRegex,
+ "bSmart": oPreviousSearch.bSmart ,
+ "bCaseInsensitive": oPreviousSearch.bCaseInsensitive
+ } );
+ }
+ } );
+
+ jqFilter
+ .attr('aria-controls', oSettings.sTableId)
+ .bind( 'keypress.DT', function(e) {
+ /* Prevent form submission */
+ if ( e.keyCode == 13 )
+ {
+ return false;
+ }
+ }
+ );
+
+ return nFilter;
+}
+
+
+/**
+ * Filter the table using both the global filter and column based filtering
+ * @param {object} oSettings dataTables settings object
+ * @param {object} oSearch search information
+ * @param {int} [iForce] force a research of the master array (1) or not (undefined or 0)
+ * @memberof DataTable#oApi
+ */
+function _fnFilterComplete ( oSettings, oInput, iForce )
+{
+ var oPrevSearch = oSettings.oPreviousSearch;
+ var aoPrevSearch = oSettings.aoPreSearchCols;
+ var fnSaveFilter = function ( oFilter ) {
+ /* Save the filtering values */
+ oPrevSearch.sSearch = oFilter.sSearch;
+ oPrevSearch.bRegex = oFilter.bRegex;
+ oPrevSearch.bSmart = oFilter.bSmart;
+ oPrevSearch.bCaseInsensitive = oFilter.bCaseInsensitive;
+ };
+
+ /* In server-side processing all filtering is done by the server, so no point hanging around here */
+ if ( !oSettings.oFeatures.bServerSide )
+ {
+ /* Global filter */
+ _fnFilter( oSettings, oInput.sSearch, iForce, oInput.bRegex, oInput.bSmart, oInput.bCaseInsensitive );
+ fnSaveFilter( oInput );
+
+ /* Now do the individual column filter */
+ for ( var i=0 ; i<oSettings.aoPreSearchCols.length ; i++ )
+ {
+ _fnFilterColumn( oSettings, aoPrevSearch[i].sSearch, i, aoPrevSearch[i].bRegex,
+ aoPrevSearch[i].bSmart, aoPrevSearch[i].bCaseInsensitive );
+ }
+
+ /* Custom filtering */
+ _fnFilterCustom( oSettings );
+ }
+ else
+ {
+ fnSaveFilter( oInput );
+ }
+
+ /* Tell the draw function we have been filtering */
+ oSettings.bFiltered = true;
+ $(oSettings.oInstance).trigger('filter', oSettings);
+
+ /* Redraw the table */
+ oSettings._iDisplayStart = 0;
+ _fnCalculateEnd( oSettings );
+ _fnDraw( oSettings );
+
+ /* Rebuild search array 'offline' */
+ _fnBuildSearchArray( oSettings, 0 );
+}
+
+
+/**
+ * Apply custom filtering functions
+ * @param {object} oSettings dataTables settings object
+ * @memberof DataTable#oApi
+ */
+function _fnFilterCustom( oSettings )
+{
+ var afnFilters = DataTable.ext.afnFiltering;
+ var aiFilterColumns = _fnGetColumns( oSettings, 'bSearchable' );
+
+ for ( var i=0, iLen=afnFilters.length ; i<iLen ; i++ )
+ {
+ var iCorrector = 0;
+ for ( var j=0, jLen=oSettings.aiDisplay.length ; j<jLen ; j++ )
+ {
+ var iDisIndex = oSettings.aiDisplay[j-iCorrector];
+ var bTest = afnFilters[i](
+ oSettings,
+ _fnGetRowData( oSettings, iDisIndex, 'filter', aiFilterColumns ),
+ iDisIndex
+ );
+
+ /* Check if we should use this row based on the filtering function */
+ if ( !bTest )
+ {
+ oSettings.aiDisplay.splice( j-iCorrector, 1 );
+ iCorrector++;
+ }
+ }
+ }
+}
+
+
+/**
+ * Filter the table on a per-column basis
+ * @param {object} oSettings dataTables settings object
+ * @param {string} sInput string to filter on
+ * @param {int} iColumn column to filter
+ * @param {bool} bRegex treat search string as a regular expression or not
+ * @param {bool} bSmart use smart filtering or not
+ * @param {bool} bCaseInsensitive Do case insenstive matching or not
+ * @memberof DataTable#oApi
+ */
+function _fnFilterColumn ( oSettings, sInput, iColumn, bRegex, bSmart, bCaseInsensitive )
+{
+ if ( sInput === "" )
+ {
+ return;
+ }
+
+ var iIndexCorrector = 0;
+ var rpSearch = _fnFilterCreateSearch( sInput, bRegex, bSmart, bCaseInsensitive );
+
+ for ( var i=oSettings.aiDisplay.length-1 ; i>=0 ; i-- )
+ {
+ var sData = _fnDataToSearch( _fnGetCellData( oSettings, oSettings.aiDisplay[i], iColumn, 'filter' ),
+ oSettings.aoColumns[iColumn].sType );
+ if ( ! rpSearch.test( sData ) )
+ {
+ oSettings.aiDisplay.splice( i, 1 );
+ iIndexCorrector++;
+ }
+ }
+}
+
+
+/**
+ * Filter the data table based on user input and draw the table
+ * @param {object} oSettings dataTables settings object
+ * @param {string} sInput string to filter on
+ * @param {int} iForce optional - force a research of the master array (1) or not (undefined or 0)
+ * @param {bool} bRegex treat as a regular expression or not
+ * @param {bool} bSmart perform smart filtering or not
+ * @param {bool} bCaseInsensitive Do case insenstive matching or not
+ * @memberof DataTable#oApi
+ */
+function _fnFilter( oSettings, sInput, iForce, bRegex, bSmart, bCaseInsensitive )
+{
+ var i;
+ var rpSearch = _fnFilterCreateSearch( sInput, bRegex, bSmart, bCaseInsensitive );
+ var oPrevSearch = oSettings.oPreviousSearch;
+
+ /* Check if we are forcing or not - optional parameter */
+ if ( !iForce )
+ {
+ iForce = 0;
+ }
+
+ /* Need to take account of custom filtering functions - always filter */
+ if ( DataTable.ext.afnFiltering.length !== 0 )
+ {
+ iForce = 1;
+ }
+
+ /*
+ * If the input is blank - we want the full data set
+ */
+ if ( sInput.length <= 0 )
+ {
+ oSettings.aiDisplay.splice( 0, oSettings.aiDisplay.length);
+ oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();
+ }
+ else
+ {
+ /*
+ * We are starting a new search or the new search string is smaller
+ * then the old one (i.e. delete). Search from the master array
+ */
+ if ( oSettings.aiDisplay.length == oSettings.aiDisplayMaster.length ||
+ oPrevSearch.sSearch.length > sInput.length || iForce == 1 ||
+ sInput.indexOf(oPrevSearch.sSearch) !== 0 )
+ {
+ /* Nuke the old display array - we are going to rebuild it */
+ oSettings.aiDisplay.splice( 0, oSettings.aiDisplay.length);
+
+ /* Force a rebuild of the search array */
+ _fnBuildSearchArray( oSettings, 1 );
+
+ /* Search through all records to populate the search array
+ * The the oSettings.aiDisplayMaster and asDataSearch arrays have 1 to 1
+ * mapping
+ */
+ for ( i=0 ; i<oSettings.aiDisplayMaster.length ; i++ )
+ {
+ if ( rpSearch.test(oSettings.asDataSearch[i]) )
+ {
+ oSettings.aiDisplay.push( oSettings.aiDisplayMaster[i] );
+ }
+ }
+ }
+ else
+ {
+ /* Using old search array - refine it - do it this way for speed
+ * Don't have to search the whole master array again
+ */
+ var iIndexCorrector = 0;
+
+ /* Search the current results */
+ for ( i=0 ; i<oSettings.asDataSearch.length ; i++ )
+ {
+ if ( ! rpSearch.test(oSettings.asDataSearch[i]) )
+ {
+ oSettings.aiDisplay.splice( i-iIndexCorrector, 1 );
+ iIndexCorrector++;
+ }
+ }
+ }
+ }
+}
+
+
+/**
+ * Create an array which can be quickly search through
+ * @param {object} oSettings dataTables settings object
+ * @param {int} iMaster use the master data array - optional
+ * @memberof DataTable#oApi
+ */
+function _fnBuildSearchArray ( oSettings, iMaster )
+{
+ if ( !oSettings.oFeatures.bServerSide )
+ {
+ /* Clear out the old data */
+ oSettings.asDataSearch = [];
+
+ var aiFilterColumns = _fnGetColumns( oSettings, 'bSearchable' );
+ var aiIndex = (iMaster===1) ?
+ oSettings.aiDisplayMaster :
+ oSettings.aiDisplay;
+
+ for ( var i=0, iLen=aiIndex.length ; i<iLen ; i++ )
+ {
+ oSettings.asDataSearch[i] = _fnBuildSearchRow(
+ oSettings,
+ _fnGetRowData( oSettings, aiIndex[i], 'filter', aiFilterColumns )
+ );
+ }
+ }
+}
+
+
+/**
+ * Create a searchable string from a single data row
+ * @param {object} oSettings dataTables settings object
+ * @param {array} aData Row data array to use for the data to search
+ * @memberof DataTable#oApi
+ */
+function _fnBuildSearchRow( oSettings, aData )
+{
+ var sSearch = aData.join(' ');
+
+ /* If it looks like there is an HTML entity in the string, attempt to decode it */
+ if ( sSearch.indexOf('&') !== -1 )
+ {
+ sSearch = $('<div>').html(sSearch).text();
+ }
+
+ // Strip newline characters
+ return sSearch.replace( /[\n\r]/g, " " );
+}
+
+/**
+ * Build a regular expression object suitable for searching a table
+ * @param {string} sSearch string to search for
+ * @param {bool} bRegex treat as a regular expression or not
+ * @param {bool} bSmart perform smart filtering or not
+ * @param {bool} bCaseInsensitive Do case insensitive matching or not
+ * @returns {RegExp} constructed object
+ * @memberof DataTable#oApi
+ */
+function _fnFilterCreateSearch( sSearch, bRegex, bSmart, bCaseInsensitive )
+{
+ var asSearch, sRegExpString;
+
+ if ( bSmart )
+ {
+ /* Generate the regular expression to use. Something along the lines of:
+ * ^(?=.*?\bone\b)(?=.*?\btwo\b)(?=.*?\bthree\b).*$
+ */
+ asSearch = bRegex ? sSearch.split( ' ' ) : _fnEscapeRegex( sSearch ).split( ' ' );
+ sRegExpString = '^(?=.*?'+asSearch.join( ')(?=.*?' )+').*$';
+ return new RegExp( sRegExpString, bCaseInsensitive ? "i" : "" );
+ }
+ else
+ {
+ sSearch = bRegex ? sSearch : _fnEscapeRegex( sSearch );
+ return new RegExp( sSearch, bCaseInsensitive ? "i" : "" );
+ }
+}
+
+
+/**
+ * Convert raw data into something that the user can search on
+ * @param {string} sData data to be modified
+ * @param {string} sType data type
+ * @returns {string} search string
+ * @memberof DataTable#oApi
+ */
+function _fnDataToSearch ( sData, sType )
+{
+ if ( typeof DataTable.ext.ofnSearch[sType] === "function" )
+ {
+ return DataTable.ext.ofnSearch[sType]( sData );
+ }
+ else if ( sData === null )
+ {
+ return '';
+ }
+ else if ( sType == "html" )
+ {
+ return sData.replace(/[\r\n]/g," ").replace( /<.*?>/g, "" );
+ }
+ else if ( typeof sData === "string" )
+ {
+ return sData.replace(/[\r\n]/g," ");
+ }
+ return sData;
+}
+
+
+/**
+ * scape a string such that it can be used in a regular expression
+ * @param {string} sVal string to escape
+ * @returns {string} escaped string
+ * @memberof DataTable#oApi
+ */
+function _fnEscapeRegex ( sVal )
+{
+ var acEscape = [ '/', '.', '*', '+', '?', '|', '(', ')', '[', ']', '{', '}', '\\', '$', '^', '-' ];
+ var reReplace = new RegExp( '(\\' + acEscape.join('|\\') + ')', 'g' );
+ return sVal.replace(reReplace, '\\$1');
+}
+
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