96 lines
No EOL
1.9 KiB
JavaScript
96 lines
No EOL
1.9 KiB
JavaScript
// @flow
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class NodeCounter {
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_id: number;
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_parent: NodeCount | null = null;
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_count: number = 0;
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_children: Array<NodeCounter> = [];
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bubbleCount(count: number) {
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this._count += count;
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if (this._parent != null) {
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this._parent.bubbleCount(count);
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}
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}
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newChild(): NodeCounter {
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const child = new NodeCounter();
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this._children.push(child);
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child._parent = this;
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this.bubbleCount(1);
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return child
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}
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removeChild(child: NodeCounter) {
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this._children = this._children.filter(c => c != child);
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this.bubbleCount(-(child._count + 1));
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}
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removeNode() {
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this._parent.removeChild(this);
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this._parent = null;
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}
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moveNode(newParent: NodeCounter) {
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this.removeNode();
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newParent._children.push(this);
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this._parent = newParent;
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newParent.bubbleCount(this._count + 1);
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}
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get count() {
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return this._count;
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}
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}
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export default class WindowNodeCounter {
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_root: NodeCounter = new NodeCounter();
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_nodes: Array<NodeCounter> = [ this._root ];
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reset() {
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this._root = new NodeCounter();
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this._nodes = [ this._root ];
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}
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addNode(id: number, parentID: number) {
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if (!this._nodes[ parentID ]) {
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//TODO: iframe case
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//console.error(`Wrong! Node with id ${ parentID } (parentId) not found.`);
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return;
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}
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if (!!this._nodes[ id ]) {
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//console.error(`Wrong! Node with id ${ id } already exists.`);
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return;
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}
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this._nodes[id] = this._nodes[ parentID ].newChild();
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}
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removeNode(id: number) {
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if (!this._nodes[ id ]) {
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// Might be text node
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//console.error(`Wrong! Node with id ${ id } not found.`);
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return;
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}
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this._nodes[ id ].removeNode();
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}
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moveNode(id: number, parentId: number) {
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if (!this._nodes[ id ]) {
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console.error(`Wrong! Node with id ${ id } not found.`);
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return;
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}
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if (!this._nodes[ parentId ]) {
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console.error(`Wrong! Node with id ${ parentId } (parentId) not found.`);
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return;
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}
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this._nodes[ id ].moveNode(this._nodes[ parentId ]);
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}
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get count() {
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return this._root.count;
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}
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} |