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1
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2
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3 /**
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4 * Provide a common method for plug-ins to check the version of DataTables being used, in order
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5 * to ensure compatibility.
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6 * @param {string} sVersion Version string to check for, in the format "X.Y.Z". Note that the
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7 * formats "X" and "X.Y" are also acceptable.
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8 * @returns {boolean} true if this version of DataTables is greater or equal to the required
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9 * version, or false if this version of DataTales is not suitable
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10 * @static
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11 * @dtopt API-Static
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12 *
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13 * @example
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14 * alert( $.fn.dataTable.fnVersionCheck( '1.9.0' ) );
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15 */
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16 DataTable.fnVersionCheck = function( sVersion )
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17 {
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18 /* This is cheap, but effective */
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19 var fnZPad = function (Zpad, count)
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20 {
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21 while(Zpad.length < count) {
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22 Zpad += '0';
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23 }
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24 return Zpad;
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25 };
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26 var aThis = DataTable.ext.sVersion.split('.');
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27 var aThat = sVersion.split('.');
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28 var sThis = '', sThat = '';
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29
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30 for ( var i=0, iLen=aThat.length ; i<iLen ; i++ )
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31 {
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32 sThis += fnZPad( aThis[i], 3 );
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33 sThat += fnZPad( aThat[i], 3 );
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34 }
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35
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36 return parseInt(sThis, 10) >= parseInt(sThat, 10);
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37 };
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38
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39
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40 /**
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41 * Check if a TABLE node is a DataTable table already or not.
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42 * @param {node} nTable The TABLE node to check if it is a DataTable or not (note that other
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43 * node types can be passed in, but will always return false).
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44 * @returns {boolean} true the table given is a DataTable, or false otherwise
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45 * @static
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46 * @dtopt API-Static
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47 *
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48 * @example
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49 * var ex = document.getElementById('example');
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50 * if ( ! $.fn.DataTable.fnIsDataTable( ex ) ) {
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51 * $(ex).dataTable();
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52 * }
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53 */
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54 DataTable.fnIsDataTable = function ( nTable )
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55 {
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56 var o = DataTable.settings;
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57
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58 for ( var i=0 ; i<o.length ; i++ )
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59 {
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60 if ( o[i].nTable === nTable || o[i].nScrollHead === nTable || o[i].nScrollFoot === nTable )
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61 {
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62 return true;
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63 }
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64 }
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65
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66 return false;
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67 };
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68
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69
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70 /**
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71 * Get all DataTable tables that have been initialised - optionally you can select to
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72 * get only currently visible tables.
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73 * @param {boolean} [bVisible=false] Flag to indicate if you want all (default) or
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74 * visible tables only.
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75 * @returns {array} Array of TABLE nodes (not DataTable instances) which are DataTables
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76 * @static
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77 * @dtopt API-Static
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78 *
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79 * @example
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80 * var table = $.fn.dataTable.fnTables(true);
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81 * if ( table.length > 0 ) {
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82 * $(table).dataTable().fnAdjustColumnSizing();
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83 * }
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84 */
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85 DataTable.fnTables = function ( bVisible )
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86 {
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87 var out = [];
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88
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89 jQuery.each( DataTable.settings, function (i, o) {
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90 if ( !bVisible || (bVisible === true && $(o.nTable).is(':visible')) )
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91 {
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92 out.push( o.nTable );
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93 }
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94 } );
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95
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96 return out;
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97 };
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98
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