How to implement jqgrid multiselect toolbar - jqgrid

Question

Currently free-jqgrid has feature that supports multiselect toolbar, same feature i want to create in jqgrid also.
http://www.ok-soft-gmbh.com/jqGrid/OK/MultiselectIn.htm

Answer 1

More recent code of usage multiselect with free jqGrid can be seen on the demo https://jsfiddle.net/OlegKi/ty4e68pm/16/. The most important parts of the demo I include below:
var dataInitMultiselect = function (elem, searchOptions) {
var $grid = $(this);
setTimeout(function() {
var $elem = $(elem),
id = elem.id,
inToolbar = searchOptions.mode === "filter",
options = {
selectedList: 2,
height: "auto",
checkAllText: "all",
uncheckAllText: "no",
noneSelectedText: "Any",
open: function() {
var $menu = $(".ui-multiselect-menu:visible");
$menu.width("auto");
$menu.css({
width: "auto",
height: "auto"
});
$menu.children("ul").css({
maxHeight: "300px",
overflow: "auto"
});
}
},
$options = $elem.find("option");
if ($options.length > 0 && $options[0].selected) {
$options[0].selected = false; // unselect the first selected option
}
if (inToolbar) {
options.minWidth = "auto";
}
$grid.triggerHandler("jqGridRefreshFilterValues");
$elem.multiselect(options);
// replace icons ui-icon-check, ui-icon-closethick, ui-icon-circle-close
// and ui-icon-triangle-1-s to font awesome icons
var $header = $elem.data("echMultiselect").header;
$header.find("span.ui-icon.ui-icon-check")
.removeClass("ui-icon ui-icon-check")
.addClass("fa fa-fw fa-check");
$header.find("span.ui-icon.ui-icon-closethick")
.removeClass("ui-icon ui-icon-closethick")
.addClass("fa fa-fw fa-times");
$header.find("span.ui-icon.ui-icon-circle-close")
.removeClass("ui-icon ui-icon-circle-close")
.addClass("fa fa-times-circle");
$elem.data("echMultiselect")
.button
.find("span.ui-icon.ui-icon-triangle-1-s")
.removeClass("ui-icon ui-icon-triangle-1-s")
.addClass("fa fa-caret-down")
.css({
float: "right",
marginRight: "5px"
});
}, 50);
},
multiselectTemplate = {
stype: "select",
searchoptions: {
generateValue: true,
//noFilterText: "Any",
sopt: ["in"],
attr: {
multiple: "multiple",
size: 3
},
dataInit: dataInitMultiselect
}
};
declares multiselectTemplate template. The next code fragment uses the template in colModel
colModel: [
...
{
name: "ship_via", width: 85, align: "center",
template: multiselectTemplate
},
...
],
Finally loadComplete include the code, which create filter toolbar after the data are loaded from the server:
loadComplete: function () {
if (!this.ftoolbar) {
// create filter toolbar if it isn't exist
$(this).jqGrid("filterToolbar", {
defaultSearch: "cn",
beforeClear: function() {
$(this.grid.hDiv)
.find(".ui-search-toolbar button.ui-multiselect")
.each(function() {
$(this).prev("select[multiple]").multiselect("refresh");
});
}
});
$(this).triggerHandler("jqGridRefreshFilterValues");
$(this.grid.hDiv)
.find(".ui-search-toolbar button.ui-multiselect")
.each(function() {
$(this).prev("select[multiple]")
.multiselect("refresh");
});
}
},
If required one can reload the data in filter toolbar by destroying it by destroyFilterToolbar method and executing the same code fragment which create it once more (I mean above code inside of loadComplete).