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(function ($) {
// register namespace
$.extend(true, window, {
"Slick": {
"RowSelectionModel": RowSelectionModel
}
});
function RowSelectionModel(options) {
var _grid;
var _ranges = [];
var _self = this;
var _handler = new Slick.EventHandler();
var _inHandler;
var _options;
var _defaults = {
selectActiveRow: true
};
function init(grid) {
_options = $.extend(true, {}, _defaults, options);
_grid = grid;
_handler.subscribe(_grid.onActiveCellChanged,
wrapHandler(handleActiveCellChange));
_handler.subscribe(_grid.onKeyDown,
wrapHandler(handleKeyDown));
_handler.subscribe(_grid.onClick,
wrapHandler(handleClick));
}
function destroy() {
_handler.unsubscribeAll();
}
function wrapHandler(handler) {
return function () {
if (!_inHandler) {
_inHandler = true;
handler.apply(this, arguments);
_inHandler = false;
}
};
}
function rangesToRows(ranges) {
var rows = [];
for (var i = 0; i < ranges.length; i++) {
for (var j = ranges[i].fromRow; j <= ranges[i].toRow; j++) {
rows.push(j);
}
}
return rows;
}
function rowsToRanges(rows) {
var ranges = [];
var lastCell = _grid.getColumns().length - 1;
for (var i = 0; i < rows.length; i++) {
ranges.push(new Slick.Range(rows[i], 0, rows[i], lastCell));
}
return ranges;
}
function getRowsRange(from, to) {
var i, rows = [];
for (i = from; i <= to; i++) {
rows.push(i);
}
for (i = to; i < from; i++) {
rows.push(i);
}
return rows;
}
function getSelectedRows() {
return rangesToRows(_ranges);
}
function setSelectedRows(rows) {
setSelectedRanges(rowsToRanges(rows));
}
function setSelectedRanges(ranges) {
_ranges = ranges;
_self.onSelectedRangesChanged.notify(_ranges);
}
function getSelectedRanges() {
return _ranges;
}
function handleActiveCellChange(e, data) {
if (_options.selectActiveRow && data.row != null) {
setSelectedRanges([new Slick.Range(data.row, 0, data.row, _grid.getColumns().length - 1)]);
}
}
function handleKeyDown(e) {
var activeRow = _grid.getActiveCell();
if (activeRow && e.shiftKey && !e.ctrlKey && !e.altKey && !e.metaKey && (e.which == 38 || e.which == 40)) {
var selectedRows = getSelectedRows();
selectedRows.sort(function (x, y) {
return x - y
});
if (!selectedRows.length) {
selectedRows = [activeRow.row];
}
var top = selectedRows[0];
var bottom = selectedRows[selectedRows.length - 1];
var active;
if (e.which == 40) {
active = activeRow.row < bottom || top == bottom ? ++bottom : ++top;
} else {
active = activeRow.row < bottom ? --bottom : --top;
}
if (active >= 0 && active < _grid.getDataLength()) {
_grid.scrollRowIntoView(active);
_ranges = rowsToRanges(getRowsRange(top, bottom));
setSelectedRanges(_ranges);
}
e.preventDefault();
e.stopPropagation();
}
}
function handleClick(e) {
var cell = _grid.getCellFromEvent(e);
if (!cell || !_grid.canCellBeActive(cell.row, cell.cell)) {
return false;
}
if (!_grid.getOptions().multiSelect || (
!e.ctrlKey && !e.shiftKey && !e.metaKey)) {
return false;
}
var selection = rangesToRows(_ranges);
var idx = $.inArray(cell.row, selection);
if (idx === -1 && (e.ctrlKey || e.metaKey)) {
selection.push(cell.row);
_grid.setActiveCell(cell.row, cell.cell);
} else if (idx !== -1 && (e.ctrlKey || e.metaKey)) {
selection = $.grep(selection, function (o, i) {
return (o !== cell.row);
});
_grid.setActiveCell(cell.row, cell.cell);
} else if (selection.length && e.shiftKey) {
var last = selection.pop();
var from = Math.min(cell.row, last);
var to = Math.max(cell.row, last);
selection = [];
for (var i = from; i <= to; i++) {
if (i !== last) {
selection.push(i);
}
}
selection.push(last);
_grid.setActiveCell(cell.row, cell.cell);
}
_ranges = rowsToRanges(selection);
setSelectedRanges(_ranges);
e.stopImmediatePropagation();
return true;
}
$.extend(this, {
"getSelectedRows": getSelectedRows,
"setSelectedRows": setSelectedRows,
"getSelectedRanges": getSelectedRanges,
"setSelectedRanges": setSelectedRanges,
"init": init,
"destroy": destroy,
"onSelectedRangesChanged": new Slick.Event()
});
}
})(jQuery);
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