mirror of
https://github.com/DataTables/DataTables.git
synced 2025-04-08 00:54:11 +02:00
63d9f3f21e
- Remove the settings._iDisplayEnd parameter finally, using only fnDisplayEnd() is needed, and the end point is calculated on-the-fly when needed (which is not often and it is not expensive). This also means that the internal method `_fnCalculateEnd` can be dropped completely. - Refactoring the empty cell in _fnDraw
113 lines
2.2 KiB
JavaScript
113 lines
2.2 KiB
JavaScript
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
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* Note that most of the paging logic is done in
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* DataTable.ext.oPagination
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*/
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/**
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* Generate the node required for default pagination
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* @param {object} oSettings dataTables settings object
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* @returns {node} Pagination feature node
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* @memberof DataTable#oApi
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*/
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function _fnFeatureHtmlPaginate ( settings )
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{
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if ( settings.oScroll.bInfinite )
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{
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return null;
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}
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var
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type = settings.sPaginationType,
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plugin = DataTable.ext.oPagination[ type ],
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redraw = function( settings ) {
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_fnDraw( settings );
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},
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node = $('<div/>').addClass( settings.oClasses.sPaging + type )[0];
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plugin.fnInit( settings, node, redraw );
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/* Add a draw callback for the pagination on first instance, to update the paging display */
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if ( ! settings.aanFeatures.p )
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{
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settings.aoDrawCallback.push( {
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"fn": function( settings ) {
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plugin.fnUpdate( settings, redraw );
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},
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"sName": "pagination"
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} );
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}
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return node;
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}
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/**
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* Alter the display settings to change the page
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* @param {object} settings DataTables settings object
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* @param {string|int} action Paging action to take: "first", "previous",
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* "next" or "last" or page number to jump to (integer)
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* @returns {bool} true page has changed, false - no change
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* @memberof DataTable#oApi
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*/
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function _fnPageChange ( settings, action )
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{
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var
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start = settings._iDisplayStart,
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len = settings._iDisplayLength,
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records = settings.fnRecordsDisplay();
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if ( records === 0 || len === -1 )
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{
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start = 0;
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}
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else if ( typeof action === "number" )
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{
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start = action * len;
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if ( start > records )
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{
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start = 0;
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}
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}
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else if ( action == "first" )
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{
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start = 0;
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}
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else if ( action == "previous" )
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{
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start = len >= 0 ?
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start - len :
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0;
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if ( start < 0 )
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{
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start = 0;
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}
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}
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else if ( action == "next" )
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{
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if ( start + len < records )
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{
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start += len;
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}
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}
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else if ( action == "last" )
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{
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start = Math.floor( (records-1) / len) * len;
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}
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else
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{
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_fnLog( settings, 0, "Unknown paging action: "+action );
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}
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var changed = settings._iDisplayStart !== start;
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settings._iDisplayStart = start;
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$(settings.oInstance).trigger('page', settings);
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return changed;
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}
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