@angular/cdk/collections#SelectionChange TypeScript Examples

The following examples show how to use @angular/cdk/collections#SelectionChange. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: dynamic-data-tree.component.ts    From matx-angular with MIT License 6 votes vote down vote up 
connect(collectionViewer: CollectionViewer): Observable<DynamicFlatNode[]> {
    this.treeControl.expansionModel.changed.subscribe(change => {
      if ((change as SelectionChange<DynamicFlatNode>).added ||
        (change as SelectionChange<DynamicFlatNode>).removed) {
        this.handleTreeControl(change as SelectionChange<DynamicFlatNode>);
      }
    });

    return merge(collectionViewer.viewChange, this.dataChange).pipe(map(() => this.data));
  }
Example #2
Source File: dynamic-data-tree.component.ts    From matx-angular with MIT License 6 votes vote down vote up 
/** Handle expand/collapse behaviors */
  handleTreeControl(change: SelectionChange<DynamicFlatNode>) {
    if (change.added) {
      change.added.forEach(node => this.toggleNode(node, true));
    }
    if (change.removed) {
      change.removed.slice().reverse().forEach(node => this.toggleNode(node, false));
    }
  }