@eclipse-scout/core/src/form/fields/smartfield/ProposalTreeNode.ts

Eclipse Scout runtime

/*
 * Copyright (c) 2010, 2023 BSI Business Systems Integration AG
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 */
import {LookupRow, ProposalTreeNodeModel, SmartFieldLookupResult, TreeNode, TreeProposalChooser} from '../../../index';
import $ from 'jquery';

export class ProposalTreeNode<TValue> extends TreeNode implements ProposalTreeNodeModel<TValue> {
  declare model: ProposalTreeNodeModel<TValue>;

  lookupRow: LookupRow<TValue>;
  parentId: string;
  proposalChooser: TreeProposalChooser<TValue>;

  protected override _renderText() {
    if (this.htmlEnabled) {
      this.$text.html(this.text);
    } else {
      this.$text.textOrNbsp(this.text);
    }
  }

  protected override _getStyles(): LookupRow<TValue> {
    return this.lookupRow;
  }

  /** @internal */
  override _decorate() {
    // This node is not yet rendered, nothing to do
    if (!this.$node) {
      return;
    }

    super._decorate();
    this.$node.toggleClass('inactive', !this.lookupRow.active);
  }

  isBrowseLoadIncremental(): boolean {
    return this.proposalChooser.isBrowseLoadIncremental();
  }

  override loadChildren(): JQuery.Promise<SmartFieldLookupResult<TValue>> {
    if (this.isBrowseLoadIncremental()) {
      let parentKey = this.lookupRow.key;
      return this.proposalChooser.smartField.lookupByRec(parentKey);
    }
    // child nodes are already loaded -> same as parent.loadChildren
    return $.resolvedPromise();
  }

  override hasChildNodes(): boolean {
    if (this.isBrowseLoadIncremental() && !this.childrenLoaded) {
      return true; // because we don't know yet
    }
    return super.hasChildNodes();
  }
}