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/**
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* This pagination plug-in provides a `dt-tag select` menu with the list of the page
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* numbers that are available for viewing.
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*
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* @name Select list
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* @summary Show a `dt-tag select` list of pages the user can pick from.
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* @author _jneilliii_
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*
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* @example
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* $(document).ready(function() {
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* $('#example').dataTable( {
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* "sPaginationType": "listbox"
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* } );
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* } );
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*/
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$.fn.dataTableExt.oPagination.listbox = {
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/*
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* Function: oPagination.listbox.fnInit
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* Purpose: Initalise dom elements required for pagination with listbox input
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* Returns: -
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* Inputs: object:oSettings - dataTables settings object
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* node:nPaging - the DIV which contains this pagination control
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* function:fnCallbackDraw - draw function which must be called on update
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*/
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"fnInit": function (oSettings, nPaging, fnCallbackDraw) {
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var nInput = document.createElement('select');
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var nPage = document.createElement('span');
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var nOf = document.createElement('span');
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nOf.className = "paginate_of";
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nPage.className = "paginate_page";
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if (oSettings.sTableId !== '') {
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nPaging.setAttribute('id', oSettings.sTableId + '_paginate');
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}
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nInput.style.display = "inline";
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nPage.innerHTML = "Page ";
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nPaging.appendChild(nPage);
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nPaging.appendChild(nInput);
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nPaging.appendChild(nOf);
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$(nInput).change(function (e) { // Set DataTables page property and redraw the grid on listbox change event.
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window.scroll(0,0); //scroll to top of page
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if (this.value === "" || this.value.match(/[^0-9]/)) { /* Nothing entered or non-numeric character */
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return;
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}
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var iNewStart = oSettings._iDisplayLength * (this.value - 1);
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if (iNewStart > oSettings.fnRecordsDisplay()) { /* Display overrun */
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oSettings._iDisplayStart = (Math.ceil((oSettings.fnRecordsDisplay() - 1) / oSettings._iDisplayLength) - 1) * oSettings._iDisplayLength;
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fnCallbackDraw(oSettings);
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return;
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}
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oSettings._iDisplayStart = iNewStart;
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fnCallbackDraw(oSettings);
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}); /* Take the brutal approach to cancelling text selection */
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$('span', nPaging).bind('mousedown', function () {
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return false;
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});
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$('span', nPaging).bind('selectstart', function () {
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return false;
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});
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},
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/*
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* Function: oPagination.listbox.fnUpdate
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* Purpose: Update the listbox element
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* Returns: -
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* Inputs: object:oSettings - dataTables settings object
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* function:fnCallbackDraw - draw function which must be called on update
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*/
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"fnUpdate": function (oSettings, fnCallbackDraw) {
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if (!oSettings.aanFeatures.p) {
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return;
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}
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var iPages = Math.ceil((oSettings.fnRecordsDisplay()) / oSettings._iDisplayLength);
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var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1; /* Loop over each instance of the pager */
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var an = oSettings.aanFeatures.p;
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for (var i = 0, iLen = an.length; i < iLen; i++) {
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var spans = an[i].getElementsByTagName('span');
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var inputs = an[i].getElementsByTagName('select');
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var elSel = inputs[0];
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if(elSel.options.length != iPages) {
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elSel.options.length = 0; //clear the listbox contents
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for (var j = 0; j < iPages; j++) { //add the pages
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var oOption = document.createElement('option');
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oOption.text = j + 1;
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oOption.value = j + 1;
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try {
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elSel.add(oOption, null); // standards compliant; doesn't work in IE
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} catch (ex) {
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elSel.add(oOption); // IE only
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}
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}
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spans[1].innerHTML = " of " + iPages;
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}
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elSel.value = iCurrentPage;
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}
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}
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};
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