Mercurial > repos > saskia-hiltemann > ireport
diff DataTables-1.9.4/media/src/core/core.length.js @ 0:ac5f9272033b draft
first upload
author | saskia-hiltemann |
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date | Tue, 01 Jul 2014 11:42:23 -0400 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/DataTables-1.9.4/media/src/core/core.length.js Tue Jul 01 11:42:23 2014 -0400 @@ -0,0 +1,122 @@ + + +/** + * Generate the node required for user display length changing + * @param {object} oSettings dataTables settings object + * @returns {node} Display length feature node + * @memberof DataTable#oApi + */ +function _fnFeatureHtmlLength ( oSettings ) +{ + if ( oSettings.oScroll.bInfinite ) + { + return null; + } + + /* This can be overruled by not using the _MENU_ var/macro in the language variable */ + var sName = 'name="'+oSettings.sTableId+'_length"'; + var sStdMenu = '<select size="1" '+sName+'>'; + var i, iLen; + var aLengthMenu = oSettings.aLengthMenu; + + if ( aLengthMenu.length == 2 && typeof aLengthMenu[0] === 'object' && + typeof aLengthMenu[1] === 'object' ) + { + for ( i=0, iLen=aLengthMenu[0].length ; i<iLen ; i++ ) + { + sStdMenu += '<option value="'+aLengthMenu[0][i]+'">'+aLengthMenu[1][i]+'</option>'; + } + } + else + { + for ( i=0, iLen=aLengthMenu.length ; i<iLen ; i++ ) + { + sStdMenu += '<option value="'+aLengthMenu[i]+'">'+aLengthMenu[i]+'</option>'; + } + } + sStdMenu += '</select>'; + + var nLength = document.createElement( 'div' ); + if ( !oSettings.aanFeatures.l ) + { + nLength.id = oSettings.sTableId+'_length'; + } + nLength.className = oSettings.oClasses.sLength; + nLength.innerHTML = '<label>'+oSettings.oLanguage.sLengthMenu.replace( '_MENU_', sStdMenu )+'</label>'; + + /* + * Set the length to the current display length - thanks to Andrea Pavlovic for this fix, + * and Stefan Skopnik for fixing the fix! + */ + $('select option[value="'+oSettings._iDisplayLength+'"]', nLength).attr("selected", true); + + $('select', nLength).bind( 'change.DT', function(e) { + var iVal = $(this).val(); + + /* Update all other length options for the new display */ + var n = oSettings.aanFeatures.l; + for ( i=0, iLen=n.length ; i<iLen ; i++ ) + { + if ( n[i] != this.parentNode ) + { + $('select', n[i]).val( iVal ); + } + } + + /* Redraw the table */ + oSettings._iDisplayLength = parseInt(iVal, 10); + _fnCalculateEnd( oSettings ); + + /* If we have space to show extra rows (backing up from the end point - then do so */ + if ( oSettings.fnDisplayEnd() == oSettings.fnRecordsDisplay() ) + { + oSettings._iDisplayStart = oSettings.fnDisplayEnd() - oSettings._iDisplayLength; + if ( oSettings._iDisplayStart < 0 ) + { + oSettings._iDisplayStart = 0; + } + } + + if ( oSettings._iDisplayLength == -1 ) + { + oSettings._iDisplayStart = 0; + } + + _fnDraw( oSettings ); + } ); + + + $('select', nLength).attr('aria-controls', oSettings.sTableId); + + return nLength; +} + + +/** + * Recalculate the end point based on the start point + * @param {object} oSettings dataTables settings object + * @memberof DataTable#oApi + */ +function _fnCalculateEnd( oSettings ) +{ + if ( oSettings.oFeatures.bPaginate === false ) + { + oSettings._iDisplayEnd = oSettings.aiDisplay.length; + } + else + { + /* Set the end point of the display - based on how many elements there are + * still to display + */ + if ( oSettings._iDisplayStart + oSettings._iDisplayLength > oSettings.aiDisplay.length || + oSettings._iDisplayLength == -1 ) + { + oSettings._iDisplayEnd = oSettings.aiDisplay.length; + } + else + { + oSettings._iDisplayEnd = oSettings._iDisplayStart + oSettings._iDisplayLength; + } + } +} +