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var toggle = false;
function setContextMenu(grid) {
   grid.onContextMenuItemClicked = function (grid, data, index) {
       if (data.tag == 'excel') {
           grid.exportGrid({
               type: "excel",
               target: "local",
               fileName: "gridExportSample.xlsx"
           });
       } else if (data.tag == 'filter' && index.column) {
           createColumnFilter(grid, index.column);
       } else if (data.tag == 'visibleTrue') {
           var columns = grid.getColumns();

           for (var i in columns) {
               grid.setColumnProperty(columns[i].name, "visible", true);
           }
           toggle = false;
           setHeaderCellContextMenu(grid, toggle);
       } else if (data.tag == 'visibleFalse') {
           grid.setColumnProperty(index.column, "visible", false);

           toggle = true;
           setHeaderCellContextMenu(grid, toggle);
       } else if (data.tag == 'fixedCol') {
           var count = grid.getColumnProperty(index.column, "displayIndex") + 1;
           grid.setFixedOptions({ colCount: count });
       } else if (data.tag == 'fixedRow') {
           var count = index.itemIndex + 1;
           grid.setFixedOptions({ rowCount: count });
       } else if (data.tag == 'fixedCancel') {
           grid.setFixedOptions({ colCount: 0, rowCount: 0 });
       };
   }

   grid.onContextMenuPopup = function (grid, x, y, elementName) {
       if (elementName == 'HeaderCell') {
           setHeaderCellContextMenu(grid, toggle);
       } else if (elementName == 'DataCell') {
           setDataCellContextMenu(grid);
       } else {
           return false;
       }
   };

   setDataCellContextMenu(grid);
}

function setHeaderCellContextMenu(grid, val) {
   var contextMenu = [{
       label: '엑셀 내보내기',
       tag: 'excel'
   }, {
       label: '필터 만들기',
       tag: 'filter'
   }, {
       label: "-"
   }, {
       label: '컬럼 숨기기',
       tag: 'visibleFalse'
   }, {
       label: '컬럼 모두 보이기',
       tag: 'visibleTrue',
       enabled: val
   }];

   grid.setContextMenu(contextMenu);
}

function setDataCellContextMenu(grid) {
   var contextMenu = [{
       label: '엑셀 내보내기',
       tag: 'excel'
   }, {
       label: "-"
   }, {
       label: '열 고정',
       tag: 'fixedCol'
   }, {
       label: '행 고정',
       tag: 'fixedRow'
   }, {
       label: '고정 취소',
       tag: 'fixedCancel'
   }];

   grid.setContextMenu(contextMenu);
}

function setHeaderCellContextMenu(grid, val) {
   var contextMenu = [{
       label: '엑셀 내보내기',
       tag: 'excel'
   }, {
       label: '필터 만들기',
       tag: 'filter'
   }, {
       label: "-"
   }, {
       label: '컬럼 숨기기',
       tag: 'visibleFalse'
   }, {
       label: '컬럼 모두 보이기',
       tag: 'visibleTrue',
       enabled: val
   }];

   grid.setContextMenu(contextMenu);
}

function setDataCellContextMenu(grid) {
   var contextMenu = [{
       label: '엑셀 내보내기',
       tag: 'excel'
   }, {
       label: "-"
   }, {
       label: '열 고정',
       tag: 'fixedCol'
   }, {
       label: '행 고정',
       tag: 'fixedRow'
   }, {
       label: '고정 취소',
       tag: 'fixedCancel'
   }];

   grid.setContextMenu(contextMenu);
}

function createColumnFilter(grid, colName) {
    var fieldName = grid.getColumnProperty(colName, "fieldName");
    var distinctValues = dataProvider.getDistinctValues(fieldName);
    var filters = [];

    for (var i = 0; i < distinctValues.length; i++) {
        filters.push({ name: distinctValues[i], criteria: "value = " + "'" + distinctValues[i] + "'" });
    }

    gridView.setColumnFilters(colName, filters);
}

setContextMenu(gridView);