57 lines
1.5 KiB
JavaScript
57 lines
1.5 KiB
JavaScript
import BaseObservableList from "./BaseObservableList.js";
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import sortedIndex from "../../utils/sortedIndex.js";
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export default class SortedArray extends BaseObservableList {
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constructor(comparator) {
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super();
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this._comparator = comparator;
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this._items = [];
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}
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setManySorted(items) {
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// TODO: we can make this way faster by only looking up the first and last key,
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// and merging whatever is inbetween with items
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// if items is not sorted, 💩🌀 will follow!
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// should we check?
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// Also, once bulk events are supported in collections,
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// we can do a bulk add event here probably if there are no updates
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// BAD CODE!
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for(let item of items) {
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this.set(item);
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}
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}
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set(item, updateParams = null) {
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const idx = sortedIndex(this._items, item, this._comparator);
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if (idx >= this._items.length || this._comparator(this._items[idx], item) !== 0) {
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this._items.splice(idx, 0, item);
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this.emitAdd(idx, item)
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} else {
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this._items[idx] = item;
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this.emitUpdate(idx, item, updateParams);
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}
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}
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get(idx) {
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return this._items[idx];
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}
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remove(idx) {
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const item = this._items[idx];
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this._items.splice(idx, 1);
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this.emitRemove(idx, item);
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}
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get array() {
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return this._items;
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}
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get length() {
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return this._items.length;
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}
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[Symbol.iterator]() {
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return this._items.values();
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}
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}
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