angular2-data-table
Version:
angular2-data-table is a Angular2 component for presenting large and complex data.
52 lines • 1.66 kB
JavaScript
;
function selectRows(selected, row, comparefn) {
var selectedIndex = comparefn(row, selected);
if (selectedIndex > -1) {
selected.splice(selectedIndex, 1);
}
else {
selected.push(row);
}
return selected;
}
exports.selectRows = selectRows;
function selectRowsBetween(selected, rows, index, prevIndex, comparefn) {
var reverse = index < prevIndex;
for (var i = 0, len = rows.length; i < len; i++) {
var row = rows[i];
var greater = i >= prevIndex && i <= index;
var lesser = i <= prevIndex && i >= index;
var range = { start: 0, end: 0 };
if (reverse) {
range = {
start: index,
end: (prevIndex - index)
};
}
else {
range = {
start: prevIndex,
end: index + 1
};
}
if ((reverse && lesser) || (!reverse && greater)) {
var idx = comparefn(row, selected);
// if reverse shift selection (unselect) and the
// row is already selected, remove it from selected
if (reverse && idx > -1) {
selected.splice(idx, 1);
continue;
}
// if in the positive range to be added to `selected`, and
// not already in the selected array, add it
if (i >= range.start && i < range.end) {
if (idx === -1) {
selected.push(row);
}
}
}
}
return selected;
}
exports.selectRowsBetween = selectRowsBetween;
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