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(function ($) {
// register namespace
$.extend(true, window, {
"Slick": {
"CheckboxSelectColumn": CheckboxSelectColumn
}
});
function CheckboxSelectColumn(options) {
var _grid;
var _self = this;
var _handler = new Slick.EventHandler();
var _selectedRowsLookup = {};
var _defaults = {
columnId: "_checkbox_selector",
cssClass: null,
toolTip: "Select/Deselect All",
width: 30
};
var _options = $.extend(true, {}, _defaults, options);
function init(grid) {
_grid = grid;
_handler
.subscribe(_grid.onSelectedRowsChanged, handleSelectedRowsChanged)
.subscribe(_grid.onClick, handleClick)
.subscribe(_grid.onHeaderClick, handleHeaderClick)
.subscribe(_grid.onKeyDown, handleKeyDown);
}
function destroy() {
_handler.unsubscribeAll();
}
function handleSelectedRowsChanged(e, args) {
var selectedRows = _grid.getSelectedRows();
var lookup = {}, row, i;
for (i = 0; i < selectedRows.length; i++) {
row = selectedRows[i];
lookup[row] = true;
if (lookup[row] !== _selectedRowsLookup[row]) {
_grid.invalidateRow(row);
delete _selectedRowsLookup[row];
}
}
for (i in _selectedRowsLookup) {
_grid.invalidateRow(i);
}
_selectedRowsLookup = lookup;
_grid.render();
if (selectedRows.length && selectedRows.length == _grid.getDataLength()) {
_grid.updateColumnHeader(_options.columnId, "<input type='checkbox' checked='checked'>", _options.toolTip);
} else {
_grid.updateColumnHeader(_options.columnId, "<input type='checkbox'>", _options.toolTip);
}
}
function handleKeyDown(e, args) {
if (e.which == 32) {
if (_grid.getColumns()[args.cell].id === _options.columnId) {
// if editing, try to commit
if (!_grid.getEditorLock().isActive() || _grid.getEditorLock().commitCurrentEdit()) {
toggleRowSelection(args.row);
}
e.preventDefault();
e.stopImmediatePropagation();
}
}
}
function handleClick(e, args) {
// clicking on a row select checkbox
if (_grid.getColumns()[args.cell].id === _options.columnId && $(e.target).is(":checkbox")) {
// if editing, try to commit
if (_grid.getEditorLock().isActive() && !_grid.getEditorLock().commitCurrentEdit()) {
e.preventDefault();
e.stopImmediatePropagation();
return;
}
toggleRowSelection(args.row);
e.stopPropagation();
e.stopImmediatePropagation();
}
}
function toggleRowSelection(row) {
if (_selectedRowsLookup[row]) {
_grid.setSelectedRows($.grep(_grid.getSelectedRows(), function (n) {
return n != row
}));
} else {
_grid.setSelectedRows(_grid.getSelectedRows().concat(row));
}
}
function handleHeaderClick(e, args) {
if (args.column.id == _options.columnId && $(e.target).is(":checkbox")) {
// if editing, try to commit
if (_grid.getEditorLock().isActive() && !_grid.getEditorLock().commitCurrentEdit()) {
e.preventDefault();
e.stopImmediatePropagation();
return;
}
if ($(e.target).is(":checked")) {
var rows = [];
for (var i = 0; i < _grid.getDataLength(); i++) {
rows.push(i);
}
_grid.setSelectedRows(rows);
} else {
_grid.setSelectedRows([]);
}
e.stopPropagation();
e.stopImmediatePropagation();
}
}
function getColumnDefinition() {
return {
id: _options.columnId,
name: "<input type='checkbox'>",
toolTip: _options.toolTip,
field: "sel",
width: _options.width,
resizable: false,
sortable: false,
cssClass: _options.cssClass,
formatter: checkboxSelectionFormatter
};
}
function checkboxSelectionFormatter(row, cell, value, columnDef, dataContext) {
if (dataContext) {
return _selectedRowsLookup[row]
? "<input type='checkbox' checked='checked'>"
: "<input type='checkbox'>";
}
return null;
}
$.extend(this, {
"init": init,
"destroy": destroy,
"getColumnDefinition": getColumnDefinition
});
}
})(jQuery);
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