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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
export class MySelection {
selection: any;
stringKey: (o: any) => string;
constructor(stringKeyFnc) {
this.selection = new Map();
this.stringKey = stringKeyFnc;
}
isEmpty(): boolean {
return this.selection.size == 0;
}
clear(): void {
this.selection = new Map();
}
select(s: Iterable<any>, isSelected?: boolean) {
for (const i of s) {
if (!i) continue;
if (isSelected == undefined) {
isSelected = !this.selection.has(this.stringKey(i));
}
if (isSelected) {
this.selection.set(this.stringKey(i), i);
} else {
this.selection.delete(this.stringKey(i));
}
}
}
isSelected(i: any): boolean {
return this.selection.has(this.stringKey(i));
}
isKeySelected(key: string): boolean {
return this.selection.has(key);
}
selectedKeys() {
const result = new Set();
for (const i of this.selection.keys()) {
result.add(i);
}
return result;
}
detachSelection() {
const result = this.selectedKeys();
this.clear();
return result;
}
[Symbol.iterator]() { return this.selection.values(); }
}