| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| import {Listener, Phase} from "./tobago-listener"; |
| import {DomUtils} from "./tobago-utils"; |
| |
| class TreeListbox { |
| |
| id: string; |
| |
| static init = function (element: HTMLElement): void { |
| for (const treeListbox of DomUtils.selfOrElementsByClassName(element, "tobago-treeListbox")) { |
| new TreeListbox(treeListbox); |
| } |
| }; |
| |
| constructor(element: HTMLElement) { |
| |
| this.id = element.id; |
| |
| const selects = element.getElementsByTagName("select"); |
| for (let i = 0; i < selects.length; i++) { |
| const listbox = selects.item(i) as HTMLSelectElement; |
| // hide select tags for level > root |
| if (listbox.previousElementSibling) { |
| listbox.classList.add("d-none"); |
| } |
| |
| // add on change on all select tag, all options that are not selected hide there dedicated |
| // select tag, and the selected option show its dedicated select tag. |
| if (!listbox.disabled) { |
| listbox.addEventListener("change", this.onChange.bind(this)); |
| } |
| } |
| } |
| |
| onChange(event: TextEvent): void { |
| let listbox = event.currentTarget as HTMLSelectElement; |
| for (const child of listbox.children) { |
| const option = child as HTMLOptionElement; |
| if (option.tagName === "OPTION") { |
| if (option.selected) { |
| this.setSelected(option); |
| let select = document.getElementById(option.id + DomUtils.SUB_COMPONENT_SEP + "parent") as HTMLSelectElement; |
| if (!select) { |
| select = listbox.parentElement.nextElementSibling.children[0] as HTMLSelectElement; // dummy |
| } |
| select.classList.remove("d-none"); |
| for (const sibling of listbox.parentElement.nextElementSibling.children) { |
| if (sibling === select) { |
| (sibling as HTMLElement).classList.remove("d-none"); |
| } else { |
| (sibling as HTMLElement).classList.add("d-none"); |
| } |
| } |
| } |
| } |
| } |
| |
| // Deeper level (2nd and later) should only show the empty select tag. |
| // The first child is the empty selection. |
| |
| let next = listbox.parentElement.nextElementSibling; |
| if (next) { |
| for (next = next.nextElementSibling; next; next = next.nextElementSibling) { |
| for (const child of next.children) { |
| const select = child as HTMLSelectElement; |
| if (select.previousElementSibling) { // is not the first |
| select.classList.add("d-none"); |
| } else { // is the first |
| select.classList.remove("d-none"); |
| } |
| } |
| } |
| } |
| } |
| |
| setSelected(option: HTMLOptionElement): void { |
| const hidden = document.getElementById(this.id + DomUtils.SUB_COMPONENT_SEP + "selected") as HTMLInputElement; |
| if (hidden) { |
| let value = <number[]>JSON.parse(hidden.value); |
| value = []; // todo: multi-select |
| value.push(parseInt(option.dataset.tobagoRowIndex)); |
| hidden.value = JSON.stringify(value); |
| } |
| } |
| } |
| |
| Listener.register(TreeListbox.init, Phase.DOCUMENT_READY); |
| Listener.register(TreeListbox.init, Phase.AFTER_UPDATE); |