113 lines
2.7 KiB
JavaScript
113 lines
2.7 KiB
JavaScript
(function ($) {
|
|
// register namespace
|
|
$.extend(true, window, {
|
|
"Slick": {
|
|
"CellRangeSelector": CellRangeSelector
|
|
}
|
|
});
|
|
|
|
|
|
function CellRangeSelector(options) {
|
|
var _grid;
|
|
var _canvas;
|
|
var _dragging;
|
|
var _decorator;
|
|
var _self = this;
|
|
var _handler = new Slick.EventHandler();
|
|
var _defaults = {
|
|
selectionCss: {
|
|
"border": "2px dashed blue"
|
|
}
|
|
};
|
|
|
|
|
|
function init(grid) {
|
|
options = $.extend(true, {}, _defaults, options);
|
|
_decorator = new Slick.CellRangeDecorator(grid, options);
|
|
_grid = grid;
|
|
_canvas = _grid.getCanvasNode();
|
|
_handler
|
|
.subscribe(_grid.onDragInit, handleDragInit)
|
|
.subscribe(_grid.onDragStart, handleDragStart)
|
|
.subscribe(_grid.onDrag, handleDrag)
|
|
.subscribe(_grid.onDragEnd, handleDragEnd);
|
|
}
|
|
|
|
function destroy() {
|
|
_handler.unsubscribeAll();
|
|
}
|
|
|
|
function handleDragInit(e, dd) {
|
|
// prevent the grid from cancelling drag'n'drop by default
|
|
e.stopImmediatePropagation();
|
|
}
|
|
|
|
function handleDragStart(e, dd) {
|
|
var cell = _grid.getCellFromEvent(e);
|
|
if (_self.onBeforeCellRangeSelected.notify(cell) !== false) {
|
|
if (_grid.canCellBeSelected(cell.row, cell.cell)) {
|
|
_dragging = true;
|
|
e.stopImmediatePropagation();
|
|
}
|
|
}
|
|
if (!_dragging) {
|
|
return;
|
|
}
|
|
|
|
_grid.focus();
|
|
|
|
var start = _grid.getCellFromPoint(
|
|
dd.startX - $(_canvas).offset().left,
|
|
dd.startY - $(_canvas).offset().top);
|
|
|
|
dd.range = {start: start, end: {}};
|
|
|
|
return _decorator.show(new Slick.Range(start.row, start.cell));
|
|
}
|
|
|
|
function handleDrag(e, dd) {
|
|
if (!_dragging) {
|
|
return;
|
|
}
|
|
e.stopImmediatePropagation();
|
|
|
|
var end = _grid.getCellFromPoint(
|
|
e.pageX - $(_canvas).offset().left,
|
|
e.pageY - $(_canvas).offset().top);
|
|
|
|
if (!_grid.canCellBeSelected(end.row, end.cell)) {
|
|
return;
|
|
}
|
|
|
|
dd.range.end = end;
|
|
_decorator.show(new Slick.Range(dd.range.start.row, dd.range.start.cell, end.row, end.cell));
|
|
}
|
|
|
|
function handleDragEnd(e, dd) {
|
|
if (!_dragging) {
|
|
return;
|
|
}
|
|
|
|
_dragging = false;
|
|
e.stopImmediatePropagation();
|
|
|
|
_decorator.hide();
|
|
_self.onCellRangeSelected.notify({
|
|
range: new Slick.Range(
|
|
dd.range.start.row,
|
|
dd.range.start.cell,
|
|
dd.range.end.row,
|
|
dd.range.end.cell
|
|
)
|
|
});
|
|
}
|
|
|
|
$.extend(this, {
|
|
"init": init,
|
|
"destroy": destroy,
|
|
|
|
"onBeforeCellRangeSelected": new Slick.Event(),
|
|
"onCellRangeSelected": new Slick.Event()
|
|
});
|
|
}
|
|
})(jQuery); |