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Plugins/pagination/select.js

107 lines
3.6 KiB
JavaScript

/**
* This pagination plug-in provides a `dt-tag select` menu with the list of the page
* numbers that are available for viewing.
*
* @name Select list
* @summary Show a `dt-tag select` list of pages the user can pick from.
* @author _jneilliii_
*
* @example
* $(document).ready(function() {
* $('#example').dataTable( {
* "sPaginationType": "listbox"
* } );
* } );
*/
var paginateSelectClassName = 'paginate_select';
var paginateTotalClassName = 'paginate_total';
$.fn.dataTableExt.oPagination.listbox = {
/*
* Function: oPagination.listbox.fnInit
* Purpose: Initalise dom elements required for pagination with listbox input
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* node:nPaging - the DIV which contains this pagination control
* function:fnCallbackDraw - draw function which must be called on update
*/
"fnInit": function (oSettings, nPaging, fnCallbackDraw) {
var nInput = document.createElement('select');
var nTotal = document.createElement('span');
var nInfo = document.createElement('span');
var language = oSettings.oLanguage.oPaginate;
var info = language.info || 'Page _INPUT_ of _TOTAL_';
nInput.className = paginateSelectClassName;
nTotal.className = paginateTotalClassName;
if (oSettings.sTableId !== '') {
nPaging.setAttribute('id', oSettings.sTableId + '_paginate');
}
nInput.style.display = "inline";
info = info.replace(/_INPUT_/g, '</span>' + nInput.outerHTML + '<span>');
info = info.replace(/_TOTAL_/g, '</span>' + nTotal.outerHTML);
nInfo.innerHTML = '<span>' + info;
$(nInfo).children().each(function (i, n) {
nPaging.appendChild(n);
});
$(nPaging).find('.' + paginateSelectClassName).change(function (e) { // Set DataTables page property and redraw the grid on listbox change event.
if (this.value === "" || this.value.match(/[^0-9]/)) { /* Nothing entered or non-numeric character */
return;
}
var iNewStart = oSettings._iDisplayLength * (this.value - 1);
if (iNewStart > oSettings.fnRecordsDisplay()) { /* Display overrun */
oSettings._iDisplayStart = (Math.ceil((oSettings.fnRecordsDisplay() - 1) / oSettings._iDisplayLength) - 1) * oSettings._iDisplayLength;
fnCallbackDraw(oSettings);
return;
}
oSettings._iDisplayStart = iNewStart;
fnCallbackDraw(oSettings);
}); /* Take the brutal approach to cancelling text selection */
$('span', nPaging).bind('mousedown', function () {
return false;
});
$('span', nPaging).bind('selectstart', function () {
return false;
});
},
/*
* Function: oPagination.listbox.fnUpdate
* Purpose: Update the listbox element
* Returns: -
* Inputs: object:oSettings - dataTables settings object
* function:fnCallbackDraw - draw function which must be called on update
*/
"fnUpdate": function (oSettings, fnCallbackDraw) {
if (!oSettings.aanFeatures.p) {
return;
}
var iPages = Math.ceil((oSettings.fnRecordsDisplay()) / oSettings._iDisplayLength);
var iCurrentPage = Math.ceil(oSettings._iDisplayStart / oSettings._iDisplayLength) + 1; /* Loop over each instance of the pager */
var an = oSettings.aanFeatures.p;
var elSel = $(an).find('.' + paginateSelectClassName);
if(elSel.children('option').length != iPages) {
for (var j = 0; j < iPages; j++) { //add the pages
var oOption = document.createElement('option');
oOption.text = j + 1;
oOption.value = j + 1;
elSel.append(oOption);
}
}
elSel.val(iCurrentPage);
$(an).find('.' + paginateTotalClassName).html(iPages);
}
};