jQuery Grid Plugin - jqGrid

var lastSel, mydata = [
        {id:"1",invdate:"2007-10-01",name:"test",note:"note",amount:"200.00",tax:"10.00",
         closed:true, ship_via:"TN",total:"210.00"},
        {id:"2",invdate:"2007-10-02",name:"test2",note:"note2",amount:"300.00",tax:"20.00",
         closed:false,ship_via:"FE",total:"320.00"},
        {id:"3",invdate:"2007-09-01",name:"test3",note:"note3",amount:"400.00",tax:"30.00",
         closed:false,ship_via:"FE",total:"430.00"},
        {id:"4",invdate:"2007-10-04",name:"test4",note:"note4",amount:"200.00",tax:"10.00",
         closed:true,ship_via:"TN",total:"210.00"},
        {id:"5",invdate:"2007-10-31",name:"test5",note:"note5",amount:"300.00",tax:"20.00",
         closed:false,ship_via:"FE",total:"320.00"},
        {id:"6",invdate:"2007-09-06",name:"test6",note:"note6",amount:"400.00",tax:"30.00",
         closed:false,ship_via:"FE",total:"430.00"},
        {id:"7",invdate:"2007-10-04",name:"test7",note:"note7",amount:"200.00",tax:"10.00",
         closed:true ,ship_via:"TN",total:"210.00"},
        {id:"8",invdate:"2007-10-03",name:"test8",note:"note8",amount:"300.00",tax:"20.00",
         closed:false,ship_via:"FE",total:"320.00"},
        {id:"9",invdate:"2007-09-01",name:"test9",note:"note9",amount:"400.00",tax:"30.00",
         closed:false,ship_via:"TN",total:"430.00"},
        {id:"10",invdate:"2007-09-08",name:"test10",note:"note10",amount:"500.00",
         tax:"30.00",closed:true ,ship_via:"TN",total:"530.00"},
        {id:"11",invdate:"2007-09-08",name:"test11",note:"note11",amount:"500.00",
         tax:"30.00",closed:false,ship_via:"FE",total:"530.00"},
        {id:"12",invdate:"2007-09-10",name:"test12",note:"note12",amount:"500.00",
         tax:"30.00",closed:false,ship_via:"FE",total:"530.00"}
    ],
    grid = $("#list"),
    onclickSubmitLocal = function(options,postdata) {
        var grid_p = grid[0].p,
            idname = grid_p.prmNames.id,
            grid_id = grid[0].id,
            id_in_postdata = grid_id+"_id",
            rowid = postdata[id_in_postdata],
            addMode = rowid === "_empty",
            oldValueOfSortColumn;

        // postdata has row id property with another name. we fix it:
        if (addMode) {
            // generate new id
            var new_id = grid_p.records + 1;
            while ($("#"+new_id).length !== 0) {
                new_id++;
            }
            postdata[idname] = String(new_id);
        } else if (typeof(postdata[idname]) === "undefined") {
            // set id property only if the property not exist
            postdata[idname] = rowid;
        }
        delete postdata[id_in_postdata];

        // prepare postdata for tree grid
        if(grid_p.treeGrid === true) {
            if(addMode) {
                var tr_par_id = grid_p.treeGridModel === 'adjacency' ? grid_p.treeReader.parent_id_field : 'parent_id';
                postdata[tr_par_id] = grid_p.selrow;
            }

            $.each(grid_p.treeReader, function (i){
                if(postdata.hasOwnProperty(this)) {
                    delete postdata[this];
                }
            });
        }

        // decode data if there encoded with autoencode
        if(grid_p.autoencode) {
            $.each(postdata,function(n,v){
                postdata[n] = $.jgrid.htmlDecode(v); // TODO: some columns could be skipped
            });
        }

        // save old value from the sorted column
        oldValueOfSortColumn = grid_p.sortname === "" ? undefined: grid.jqGrid('getCell',rowid,grid_p.sortname);

        // save the data in the grid
        if (grid_p.treeGrid === true) {
            if (addMode) {
                grid.jqGrid("addChildNode",rowid,grid_p.selrow,postdata);
            } else {
                grid.jqGrid("setTreeRow",rowid,postdata);
            }
        } else {
            if (addMode) {
                grid.jqGrid("addRowData",rowid,postdata,options.addedrow);
            } else {
                grid.jqGrid("setRowData",rowid,postdata);
            }
        }

        if ((addMode && options.closeAfterAdd) || (!addMode && options.closeAfterEdit)) {
            // close the edit/add dialog
            $.jgrid.hideModal("#editmod"+grid_id,
                                {gb:"#gbox_"+grid_id,jqm:options.jqModal,onClose:options.onClose});
        }

        if (postdata[grid_p.sortname] !== oldValueOfSortColumn) {
            // if the data are changed in the column by which are currently sorted
            // we need resort the grid
            setTimeout(function() {
                grid.trigger("reloadGrid", [{current:true}]);
            },100);
        }

        // !!! the most important step: skip ajax request to the server
        this.processing = true;
        return {};
    },
    editSettings = {
        recreateForm:true,
        jqModal:false,
        reloadAfterSubmit:false,
        closeOnEscape:true,
        closeAfterEdit:true,
        onclickSubmit:onclickSubmitLocal
    },
    addSettings = {
        recreateForm:true,
        jqModal:false,
        reloadAfterSubmit:false,
        closeOnEscape:true,
        closeAfterAdd:true,
        onclickSubmit:onclickSubmitLocal
    },
    delSettings = {
        // because I use "local" data I don't want to send the changes to the server
        // so I use "processing:true" setting and delete the row manually in onclickSubmit
        onclickSubmit: function(options, rowid) {
            var grid_id = grid[0].id,
                grid_p = grid[0].p,
                newPage = grid[0].p.page;

            // delete the row
            grid.delRowData(rowid);
            $.jgrid.hideModal("#delmod"+grid_id,
                                {gb:"#gbox_"+grid_id,jqm:options.jqModal,onClose:options.onClose});

            if (grid_p.lastpage > 1) {// on the multipage grid reload the grid
                if (grid_p.reccount === 0 && newPage === grid_p.lastpage) {
                    // if after deliting there are no rows on the current page
                    // which is the last page of the grid
                    newPage--; // go to the previous page
                }
                // reload grid to make the row from the next page visable.
                grid.trigger("reloadGrid", [{page:newPage}]);
            }

            return true;
        },
        processing:true
    },
    initDateEdit = function(elem) {
        setTimeout(function() {
            $(elem).datepicker({
                dateFormat: 'dd-M-yy',
                autoSize: true,
                showOn: 'button', // it dosn't work in searching dialog
                changeYear: true,
                changeMonth: true,
                showButtonPanel: true,
                showWeek: true
            });
            //$(elem).focus();
        },100);
    },
    initDateSearch = function(elem) {
        setTimeout(function() {
            $(elem).datepicker({
                dateFormat: 'dd-M-yy',
                autoSize: true,
                //showOn: 'button', // it dosn't work in searching dialog
                changeYear: true,
                changeMonth: true,
                showButtonPanel: true,
                showWeek: true
            });
            //$(elem).focus();
        },100);
    };

grid.jqGrid({
    datatype:'local',
    data: mydata,
    colNames:['Inv No','Date','Client','Amount','Tax','Total','Closed','Shipped via','Notes'],
    colModel:[
        {name:'id',index:'id',width:70,align:'center',sorttype: 'int',searchoptions:{sopt:['eq','ne']}},
        {name:'invdate',index:'invdate',width:80, align:'center', sorttype:'date',
            formatter:'date', datefmt: 'd-M-Y',
            formatoptions: {newformat:'d-M-Y'}, editable:true, 
            editoptions: {dataInit:initDateEdit},
            searchoptions: {dataInit:initDateSearch}},
        {name:'name',index:'name',editable: true, width:70, editrules:{required:true}},
        {name:'amount',index:'amount',width:100,formatter:'number',editable:true,align:'right'},
        {name:'tax',index:'tax',width:70, formatter:'number', editable: true, align:'right'},
        {name:'total',index:'total',width:120, formatter:'number', editable: true, align:'right'},
        {name:'closed',index:'closed',width:110,align:'center',editable: true,
            formatter: 'checkbox',
            edittype:'checkbox',editoptions:{value:'Yes:No',defaultValue:'Yes'},
            stype: 'select',
            searchoptions: { sopt:['eq','ne'], value:':All;true:Yes;false:No' }},
        {name:'ship_via',index:'ship_via',width:120,align:'center',editable: true, formatter:'select',
            edittype:'select',editoptions:value:'FE:FedEx;TN:TNT;IN:Intim',defaultValue:'Intime'},
            stype:'select', searchoptions:{value:':All;FE:FedEx;TN:TNT;IN:Intim'}},
        {name:'note',index:'note',width:100,sortable:false,editable:true,edittype:'textarea'}
    ],
    rowNum:10,
    rowList:[5,10,20],
    pager: '#pager',
    gridview:true,
    rownumbers:true,
    autoencode:true,
    ignoreCase:true,
    sortname: 'invdate',
    viewrecords: true,
    sortorder: 'desc',
    caption:'How to implement local form editing',
    height: '100%',
    editurl: 'clientArray',
    ondblClickRow: function(rowid, ri, ci) {
        var p = grid[0].p;
        if (p.selrow !== rowid) {
            // prevent the row from be unselected on double-click
            // the implementation is for "multiselect:false" which we use,
            // but one can easy modify the code for "multiselect:true"
            grid.jqGrid('setSelection', rowid);
        }
        grid.jqGrid('editGridRow', rowid, editSettings);
    },
    onSelectRow: function(id) {
        if (id && id !== lastSel) {
            // cancel editing of the previous selected row if it was in editing state.
            // jqGrid hold intern savedRow array inside of jqGrid object,
            // so it is safe to call restoreRow method with any id parameter
            // if jqGrid not in editing state
            if (typeof lastSel !== "undefined") {
                grid.jqGrid('restoreRow',lastSel);
            }
            lastSel = id;
        }
    }
}).jqGrid('navGrid','#pager',{},editSettings,addSettings,delSettings,
            {multipleSearch:true,overlay:false,
            onClose:function(form){
                // if we close the search dialog during the datapicker are opened
                // the datepicker will stay opened. To fix this we have to hide
                // the div used by datepicker
                $("div#ui-datepicker-div.ui-datepicker").hide();
            }});