@progress/kendo-angular-treeview
Version:
Kendo UI TreeView for Angular
93 lines (92 loc) • 3.45 kB
JavaScript
/**-----------------------------------------------------------------------------------------
* Copyright © 2025 Progress Software Corporation. All rights reserved.
* Licensed under commercial license. See LICENSE.md in the project root for more information
*-------------------------------------------------------------------------------------------*/
import { Directive, Input } from "@angular/core";
import { DataBoundComponent } from "./data-bound-component";
import { DEFAULT_FILTER_SETTINGS } from "./treeview-filter-settings";
import { filterTree, isPresent } from "./utils";
import * as i0 from "@angular/core";
import * as i1 from "./data-bound-component";
/**
* @hidden
*/
export class FilteringBase {
component;
/**
* Stores the unfiltered nodes
*/
filterData;
visibleNodes = new Set();
/**
* The settings which are applied when performing a filter on the component's data.
*/
set filterSettings(settings) {
this._filterSettings = {
...DEFAULT_FILTER_SETTINGS,
...settings
};
}
get filterSettings() {
return this._filterSettings;
}
_filterSettings = DEFAULT_FILTER_SETTINGS;
/**
* Applies a filter and changes the visibility of the component's nodes accordingly.
*/
set filter(term) {
this.handleFilterChange(term);
}
constructor(component) {
this.component = component;
}
/**
* @hidden
*/
handleFilterChange(term) {
if (!this.filterData) {
return;
}
this.resetNodesVisibility(this.filterData);
if (term) {
filterTree(this.filterData, term, this.filterSettings, this.component.textField);
}
this.updateVisibleNodes(this.filterData);
if (isPresent(this.component.filterStateChange)) {
this.component.filterStateChange.emit({
nodes: this.filterData,
matchCount: this.visibleNodes.size,
term,
filterSettings: this.filterSettings
});
}
}
updateVisibleNodes(items) {
items.forEach((wrapper) => {
if (wrapper.visible) {
this.visibleNodes.add(wrapper.dataItem);
}
if (wrapper.children) {
this.updateVisibleNodes(wrapper.children);
}
});
}
resetNodesVisibility(items) {
this.visibleNodes.clear();
items.forEach((wrapper) => {
wrapper.visible = true;
if (wrapper.children) {
this.resetNodesVisibility(wrapper.children);
}
});
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: FilteringBase, deps: [{ token: i1.DataBoundComponent }], target: i0.ɵɵFactoryTarget.Directive });
static ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.2.12", type: FilteringBase, inputs: { filterSettings: "filterSettings", filter: "filter" }, ngImport: i0 });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.2.12", ngImport: i0, type: FilteringBase, decorators: [{
type: Directive
}], ctorParameters: function () { return [{ type: i1.DataBoundComponent }]; }, propDecorators: { filterSettings: [{
type: Input
}], filter: [{
type: Input
}] } });