I combined the code from the previous answer about persisting jqGrid column preferences with the code of from another answer where I suggested the code which implemented persistent selection of rows. It's important to mention, that in case of multiselect:true it will be used the array of ids of selected rows which contains all selected even if the rows are on another page. It's very practical and the implementation very simple. So I posted the corresponding feature request, but it's stay till now unanswered.
Now I can present two demos: the first demo which use multiselect: true and the second demo which uses the same code, but with the single selection.
The most important parts of the code which I used you will find below.
One thing is very important to mention: you should modify the value of myColumnStateName in every page which you use. The value of the variable contain the name of the column state in the localStorage. So it you would not change the name you will share state of different tables which can follows to very strange effects. You can consider to use names constructed from the name of the current page or it's URL as the value of myColumnStateName.
var $grid = $("#list"),
getColumnIndex = function (grid, columnIndex) {
var cm = grid.jqGrid('getGridParam', 'colModel'), i, l = cm.length;
for (i = 0; i < l; i++) {
if ((cm[i].index || cm[i].name) === columnIndex) {
return i; // return the colModel index
}
}
return -1;
},
refreshSerchingToolbar = function ($grid, myDefaultSearch) {
var postData = $grid.jqGrid('getGridParam', 'postData'), filters, i, l,
rules, rule, iCol, cm = $grid.jqGrid('getGridParam', 'colModel'),
cmi, control, tagName;
for (i = 0, l = cm.length; i < l; i++) {
control = $("#gs_" + $.jgrid.jqID(cm[i].name));
if (control.length > 0) {
tagName = control[0].tagName.toUpperCase();
if (tagName === "SELECT") { // && cmi.stype === "select"
control.find("option[value='']")
.attr('selected', 'selected');
} else if (tagName === "INPUT") {
control.val('');
}
}
}
if (typeof (postData.filters) === "string" &&
typeof ($grid[0].ftoolbar) === "boolean" && $grid[0].ftoolbar) {
filters = $.parseJSON(postData.filters);
if (filters && filters.groupOp === "AND" && typeof (filters.groups) === "undefined") {
// only in case of advance searching without grouping we import filters in the
// searching toolbar
rules = filters.rules;
for (i = 0, l = rules.length; i < l; i++) {
rule = rules[i];
iCol = getColumnIndex($grid, rule.field);
if (iCol >= 0) {
cmi = cm[iCol];
control = $("#gs_" + $.jgrid.jqID(cmi.name));
if (control.length > 0 &&
(((typeof (cmi.searchoptions) === "undefined" ||
typeof (cmi.searchoptions.sopt) === "undefined")
&& rule.op === myDefaultSearch) ||
(typeof (cmi.searchoptions) === "object" &&
$.isArray(cmi.searchoptions.sopt) &&
cmi.searchoptions.sopt.length > 0 &&
cmi.searchoptions.sopt[0] === rule.op))) {
tagName = control[0].tagName.toUpperCase();
if (tagName === "SELECT") { // && cmi.stype === "select"
control.find("option[value='" + $.jgrid.jqID(rule.data) + "']")
.attr('selected', 'selected');
} else if (tagName === "INPUT") {
control.val(rule.data);
}
}
}
}
}
}
},
saveObjectInLocalStorage = function (storageItemName, object) {
if (typeof window.localStorage !== 'undefined') {
window.localStorage.setItem(storageItemName, JSON.stringify(object));
}
},
removeObjectFromLocalStorage = function (storageItemName) {
if (typeof window.localStorage !== 'undefined') {
window.localStorage.removeItem(storageItemName);
}
},
getObjectFromLocalStorage = function (storageItemName) {
if (typeof window.localStorage !== 'undefined') {
return JSON.parse(window.localStorage.getItem(storageItemName));
}
},
myColumnStateName = 'ColumnChooserAndLocalStorage2.colState',
idsOfSelectedRows = [],
saveColumnState = function (perm) {
var colModel = this.jqGrid('getGridParam', 'colModel'), i, l = colModel.length, colItem, cmName,
postData = this.jqGrid('getGridParam', 'postData'),
columnsState = {
search: this.jqGrid('getGridParam', 'search'),
page: this.jqGrid('getGridParam', 'page'),
sortname: this.jqGrid('getGridParam', 'sortname'),
sortorder: this.jqGrid('getGridParam', 'sortorder'),
permutation: perm,
selectedRows: idsOfSelectedRows,
colStates: {}
},
colStates = columnsState.colStates;
if (typeof (postData.filters) !== 'undefined') {
columnsState.filters = postData.filters;
}
for (i = 0; i < l; i++) {
colItem = colModel[i];
cmName = colItem.name;
if (cmName !== 'rn' && cmName !== 'cb' && cmName !== 'subgrid') {
colStates[cmName] = {
width: colItem.width,
hidden: colItem.hidden
};
}
}
saveObjectInLocalStorage(myColumnStateName, columnsState);
},
myColumnsState,
isColState,
restoreColumnState = function (colModel) {
var colItem, i, l = colModel.length, colStates, cmName,
columnsState = getObjectFromLocalStorage(myColumnStateName);
if (columnsState) {
colStates = columnsState.colStates;
for (i = 0; i < l; i++) {
colItem = colModel[i];
cmName = colItem.name;
if (cmName !== 'rn' && cmName !== 'cb' && cmName !== 'subgrid') {
colModel[i] = $.extend(true, {}, colModel[i], colStates[cmName]);
}
}
}
return columnsState;
},
updateIdsOfSelectedRows = function (id, isSelected) {
var index = idsOfSelectedRows.indexOf(id);
if (!isSelected && index >= 0) {
idsOfSelectedRows.splice(index, 1); // remove id from the list
} else if (index < 0) {
idsOfSelectedRows.push(id);
}
},
firstLoad = true;
myColumnsState = restoreColumnState(cm);
isColState = typeof (myColumnsState) !== 'undefined' && myColumnsState !== null;
idsOfSelectedRows = isColState && typeof (myColumnsState.selectedRows) !== "undefined" ? myColumnsState.selectedRows : [];
$grid.jqGrid({
// ... some options
page: isColState ? myColumnsState.page : 1,
search: isColState ? myColumnsState.search : false,
postData: isColState ? { filters: myColumnsState.filters } : {},
sortname: isColState ? myColumnsState.sortname : 'invdate',
sortorder: isColState ? myColumnsState.sortorder : 'desc',
onSelectRow: function (id, isSelected) {
updateIdsOfSelectedRows(id, isSelected);
saveColumnState.call($grid, $grid[0].p.remapColumns);
},
onSelectAll: function (aRowids, isSelected) {
var i, count, id;
for (i = 0, count = aRowids.length; i < count; i++) {
id = aRowids[i];
updateIdsOfSelectedRows(id, isSelected);
}
saveColumnState.call($grid, $grid[0].p.remapColumns);
},
loadComplete: function () {
var $this = $(this), i, count;
if (firstLoad) {
firstLoad = false;
if (isColState) {
$this.jqGrid("remapColumns", myColumnsState.permutation, true);
}
if (typeof (this.ftoolbar) !== "boolean" || !this.ftoolbar) {
// create toolbar if needed
$this.jqGrid('filterToolbar',
{stringResult: true, searchOnEnter: true, defaultSearch: myDefaultSearch});
}
}
refreshSerchingToolbar($this, myDefaultSearch);
for (i = 0, count = idsOfSelectedRows.length; i < count; i++) {
$this.jqGrid('setSelection', idsOfSelectedRows[i], false);
}
saveColumnState.call($this, this.p.remapColumns);
},
resizeStop: function () {
saveColumnState.call($grid, $grid[0].p.remapColumns);
}
});
$grid.jqGrid('navGrid', '#pager', {edit: false, add: false, del: false});
$grid.jqGrid('navButtonAdd', '#pager', {
caption: "",
buttonicon: "ui-icon-closethick",
title: "clear saved grid's settings",
onClickButton: function () {
removeObjectFromLocalStorage(myColumnStateName);
window.location.reload();
}
});
UPDATED: I forgot to mention that in case of usage multiselect: true option with jqGrid 4.3 it is very important to use the fix which described here. In the first demo I used the modified version of the jquery.jqGrid.src.js which include the bug fix.
UPDATED 2: To make easy to generate unique name of the local storage item used to save the grid state I modified the demos a little. The next version of the multiselect demo and the single select demo use myColumnStateName as the function defined as the following
var myColumnStateName = function (grid) {
return window.location.pathname + '#' + grid[0].id;
}
The usage of myColumnStateName are changed correspondingly. Additionally I extended the column state to save the rowNum value.
UPDATED 3: The answer describe how one can use new possibility of free jqGrid to save the grid state.
