53 lines
1.0 KiB
JavaScript
53 lines
1.0 KiB
JavaScript
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function HoverListener(coordinateGrid) {
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var t = this;
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var bindType;
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var change;
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var firstCell;
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var cell;
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t.start = function(_change, ev, _bindType) {
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change = _change;
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firstCell = cell = null;
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coordinateGrid.build();
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mouse(ev);
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bindType = _bindType || 'mousemove';
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$(document).bind(bindType, mouse);
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};
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function mouse(ev) {
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_fixUIEvent(ev);
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var newCell = coordinateGrid.cell(ev.pageX, ev.pageY);
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if (!newCell != !cell || newCell && (newCell.row != cell.row || newCell.col != cell.col)) {
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if (newCell) {
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if (!firstCell) {
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firstCell = newCell;
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}
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change(newCell, firstCell, newCell.row-firstCell.row, newCell.col-firstCell.col);
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}else{
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change(newCell, firstCell);
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}
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cell = newCell;
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}
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}
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t.stop = function() {
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$(document).unbind(bindType, mouse);
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return cell;
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};
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}
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function _fixUIEvent(event) { // jQuery 1.7 workaround (for issue 1168)
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if (event.pageX === undefined) {
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event.pageX = event.originalEvent.pageX;
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event.pageY = event.originalEvent.pageY;
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}
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} |