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/**
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* Provide a common method for plug-ins to check the version of DataTables being used, in order
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* to ensure compatibility.
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* @param {string} sVersion Version string to check for, in the format "X.Y.Z". Note that the
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* formats "X" and "X.Y" are also acceptable.
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* @returns {boolean} true if this version of DataTables is greater or equal to the required
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* version, or false if this version of DataTales is not suitable
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* @static
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* @dtopt API-Static
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*
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* @example
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* alert( $.fn.dataTable.fnVersionCheck( '1.9.0' ) );
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*/
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DataTable.fnVersionCheck = function( sVersion )
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{
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/* This is cheap, but effective */
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var fnZPad = function (Zpad, count)
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{
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while(Zpad.length < count) {
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Zpad += '0';
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}
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return Zpad;
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};
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var aThis = DataTable.ext.sVersion.split('.');
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var aThat = sVersion.split('.');
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var sThis = '', sThat = '';
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for ( var i=0, iLen=aThat.length ; i<iLen ; i++ )
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{
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sThis += fnZPad( aThis[i], 3 );
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sThat += fnZPad( aThat[i], 3 );
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}
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return parseInt(sThis, 10) >= parseInt(sThat, 10);
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};
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/**
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* Check if a TABLE node is a DataTable table already or not.
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* @param {node} nTable The TABLE node to check if it is a DataTable or not (note that other
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* node types can be passed in, but will always return false).
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* @returns {boolean} true the table given is a DataTable, or false otherwise
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* @static
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* @dtopt API-Static
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*
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* @example
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* var ex = document.getElementById('example');
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* if ( ! $.fn.DataTable.fnIsDataTable( ex ) ) {
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* $(ex).dataTable();
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* }
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*/
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DataTable.fnIsDataTable = function ( nTable )
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{
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var o = DataTable.settings;
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for ( var i=0 ; i<o.length ; i++ )
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{
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if ( o[i].nTable === nTable || o[i].nScrollHead === nTable || o[i].nScrollFoot === nTable )
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{
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return true;
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}
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}
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return false;
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};
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/**
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* Get all DataTable tables that have been initialised - optionally you can select to
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* get only currently visible tables.
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* @param {boolean} [bVisible=false] Flag to indicate if you want all (default) or
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* visible tables only.
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* @returns {array} Array of TABLE nodes (not DataTable instances) which are DataTables
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* @static
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* @dtopt API-Static
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*
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* @example
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* var table = $.fn.dataTable.fnTables(true);
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* if ( table.length > 0 ) {
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* $(table).dataTable().fnAdjustColumnSizing();
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* }
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*/
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DataTable.fnTables = function ( bVisible )
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{
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var out = [];
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jQuery.each( DataTable.settings, function (i, o) {
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if ( !bVisible || (bVisible === true && $(o.nTable).is(':visible')) )
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{
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out.push( o.nTable );
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}
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} );
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return out;
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};
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