forked from extern/egroupware
838 lines
20 KiB
TypeScript
838 lines
20 KiB
TypeScript
/**
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* EGroupware eTemplate2 - SearchMixin
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*
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @link https://www.egroupware.org
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* @author Nathan Gray
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*/
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import {css, html, LitElement, render, repeat, SlotMixin} from "@lion/core";
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import {cleanSelectOptions, SelectOption} from "./FindSelectOptions";
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import {Validator} from "@lion/form-core";
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import {Et2Tag} from "./Tag/Et2Tag";
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// Otherwise import gets stripped
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let keep_import : Et2Tag;
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// Export the Interface for TypeScript
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type Constructor<T = {}> = new (...args : any[]) => T;
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export declare class SearchMixinInterface
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{
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/**
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* Enable searching on options
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*/
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search : boolean;
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/**
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* Get [additional] options from the server when you search, instead of just searching existing options
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*/
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searchUrl : string;
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/**
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* Allow adding new options that are not in the search results
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*/
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allowFreeEntries : boolean;
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/**
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* Additional search options passed to the search functions
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*
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* @type {object}
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*/
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searchOptions : object;
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/**
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* Start the search process
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*/
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startSearch() : void
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/**
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* Search local options
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*/
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localSearch(search : string, options : object) : Promise<void>
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/**
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* Search remote options.
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* If searchUrl is not set, it will return very quickly with no results
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*/
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remoteSearch(search : string, options : object) : Promise<void>
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/**
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* Check a [local] item to see if it matches
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*/
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searchMatch(search : string, options : object, item : LitElement) : boolean
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}
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/**
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* Base class for things that do search type behaviour
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* Separated to keep things a little simpler.
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*
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* Currently I assume we're extending an Et2Select, so changes may need to be made for better abstraction
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*/
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export const Et2WithSearchMixin = <T extends Constructor<LitElement>>(superclass : T) =>
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{
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class Et2WidgetWithSearch extends SlotMixin(superclass)
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{
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static get properties()
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{
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return {
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...super.properties,
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search: {type: Boolean, reflect: true},
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searchUrl: {type: String},
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/**
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* Allow custom entries that are not in the options
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*/
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allowFreeEntries: {type: Boolean, reflect: true},
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searchOptions: {type: Object},
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/**
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* Allow editing tags by clicking on them.
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* allowFreeEntries must be true
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*/
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editModeEnabled: {type: Boolean}
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}
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}
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get slots()
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{
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return {
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...super.slots,
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suffix: () =>
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{
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const input = document.createElement("sl-icon");
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input.name = "search";
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return input;
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}
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}
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}
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static get styles()
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{
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return [
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// @ts-ignore
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...(super.styles ? (Symbol.iterator in Object(super.styles) ? super.styles : [super.styles]) : []),
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css`
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/* Show / hide SlSelect icons - dropdown arrow, etc */
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::slotted([slot="suffix"]) {
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display: none;
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}
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:host([search]) ::slotted([slot="suffix"]) {
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display: initial;
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}
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/* Move the widget border */
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.form-control-input {
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border: solid var(--sl-input-border-width) var(--sl-input-border-color);
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border-radius: var(--sl-input-border-radius-medium);
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}
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.select--standard .select__control {
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border-style: none;
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}
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/* Move focus highlight */
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.form-control-input:focus-within {
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box-shadow: var(--sl-focus-ring);
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}
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.select--standard.select--focused:not(.select--disabled) .select__control {
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box-shadow: initial;
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}
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:host([allowFreeEntries]) ::slotted([slot="suffix"]) {
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display: none;
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}
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/* Make search textbox take full width */
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::slotted(.search_input), ::slotted(.search_input) input, .search_input, .search_input input {
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width: 100%;
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}
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.search_input input {
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flex: 1 1 auto;
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width: 100%;
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}
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/* Don't show the current value while searching for single, we want the space
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This lets the current value shrink to nothing so the input can expand
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*/
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.select__label {
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flex: 1 15 auto;
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}
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/* Show edit textbox only when editing */
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.search_input #edit {
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display: none;
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}
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.search_input.editing #search {
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display: none;
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}
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.search_input.editing #edit {
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display: initial;
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}
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:host([search]:not([multiple])) .select--open .select__prefix {
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flex: 2 1 auto;
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width: 100%;
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}
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/* Search textbox general styling, starts hidden */
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.select__prefix ::slotted(.search_input),.search_input {
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display: none;
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flex: 1 1 auto;
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margin-left: 0px;
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width: 100%;
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height: var(--sl-input-height-medium);
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position: relative;
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background-color: white;
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}
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/* Search UI active - show textbox & stuff */
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::slotted(.search_input.active),.search_input.active,
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.search_input.editing{
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display: flex;
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}
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/* Hide options that do not match current search text */
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::slotted(.no-match) {
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display: none;
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}
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/* Different cursor for editable tags */
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:host([allowfreeentries]) .search_tag::part(base) {
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cursor: text;
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}
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`
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]
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}
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// Borrowed from Lion ValidatorMixin, but we don't want the whole thing
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protected defaultValidators : Validator[];
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protected validators : Validator[];
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private _searchTimeout : number;
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protected static SEARCH_TIMEOUT = 500;
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protected static MIN_CHARS = 2;
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/**
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* These characters will end a free tag
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* @type {string[]}
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*/
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static TAG_BREAK : string[] = ["Tab", "Enter", ","];
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constructor(...args : any[])
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{
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super(...args);
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this.search = false;
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this.searchUrl = "";
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this.searchOptions = {};
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this.allowFreeEntries = false;
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this.editModeEnabled = false;
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// Hiding the selected options from the dropdown means we can't un-select the tags
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// hidden by the max limit. Prefer no limit.
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this.maxTagsVisible = -1;
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this.validators = [];
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/**
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* Used by Subclassers to add default Validators.
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* A email input for instance, always needs the isEmail validator.
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* @example
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* ```js
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* this.defaultValidators.push(new IsDate());
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* ```
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* @type {Validator[]}
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*/
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this.defaultValidators = [];
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this._handleSelect = this._handleSelect.bind(this);
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this._handleClear = this._handleClear.bind(this);
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this._handleSearchButtonClick = this._handleSearchButtonClick.bind(this);
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this._handleDoubleClick = this._handleDoubleClick.bind(this);
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this._handleSearchAbort = this._handleSearchAbort.bind(this);
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this._handleSearchKeyDown = this._handleSearchKeyDown.bind(this);
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this._handleEditKeyDown = this._handleEditKeyDown.bind(this);
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}
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connectedCallback()
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{
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super.connectedCallback();
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this.classList.toggle("search", this.searchEnabled);
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// Missing any of the required attributes? Don't change anything.
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if(!this.searchEnabled)
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{
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return;
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}
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this._addNodes();
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this._bindListeners();
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}
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disconnectedCallback()
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{
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super.disconnectedCallback();
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this._unbindListeners();
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}
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willUpdate(changedProperties)
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{
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super.willUpdate(changedProperties);
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// If searchURL is set, turn on search
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if(changedProperties.has("searchUrl") && this.searchUrl)
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{
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this.search = true;
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}
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}
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/**
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* Add the nodes we need to search - adjust parent shadowDOM
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*
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* @protected
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*/
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protected _addNodes()
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{
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const div = document.createElement("div");
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div.classList.add("search_input");
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render(this._searchInputTemplate(), div);
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if(!super.multiple)
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{
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div.slot = "prefix";
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this.appendChild(div);
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return;
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}
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super.updateComplete.then(() =>
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{
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this.menu.querySelector("slot").textContent = this.egw().lang("No suggestions");
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let control = this.shadowRoot.querySelector(".form-control-input");
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control.append(div);
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// Move menu down to make space for search
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this.dropdown.setAttribute("distance", parseInt(getComputedStyle(div).getPropertyValue("--sl-input-height-medium")));
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});
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}
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protected _searchInputTemplate()
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{
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let edit = null;
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if(this.editModeEnabled)
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{
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edit = html`<input id="edit" type="text" part="input"
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@keydown=${this._handleEditKeyDown}
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@blur=${this.stopEdit.bind(this)}
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/>`;
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}
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// I can't figure out how to get this full width via CSS
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return html`
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<input id="search" type="text" part="input" style="width:100%" @keydown=${this._handleSearchKeyDown}/>
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${edit}
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`;
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}
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/**
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* Do we have the needed properties set, so we can actually do searching
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*
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* @returns {boolean}
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*/
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public get searchEnabled() : boolean
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{
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return this.search || this.searchUrl.length > 0;
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}
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protected get _searchButtonNode()
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{
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return this.querySelector("sl-icon[slot='suffix']");
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}
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protected get _searchInputNode()
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{
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return this._activeControls.querySelector("input#search");
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}
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protected get _editInputNode() : HTMLInputElement
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{
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return this._activeControls.querySelector("input#edit");
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}
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protected get _activeControls()
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{
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return this.multiple ?
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this.shadowRoot.querySelector(".search_input") :
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this.querySelector(".search_input");
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}
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/**
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* Only local options, excludes server options
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*
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* @protected
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*/
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protected get localItems()
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{
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return this.querySelectorAll(this.optionTag + ":not(.remote)");
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}
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protected get remoteItems()
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{
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return this.querySelectorAll(this.optionTag + ".remote");
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}
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get value()
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{
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return super.value;
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}
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set value(new_value : string | string[])
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{
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super.value = new_value;
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if(!new_value)
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{
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return;
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}
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// Overridden to add options if allowFreeEntries=true
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if(this.allowFreeEntries)
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{
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if(typeof this.value == "string" && !this.menuItems.find(o => o.value == this.value))
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{
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this.createFreeEntry(this.value);
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}
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else
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{
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this.value.forEach((e) =>
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{
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if(!this.menuItems.find(o => o.value == e))
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{
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this.createFreeEntry(e);
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}
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});
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}
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}
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}
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protected _bindListeners()
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{
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this.addEventListener("sl-blur", this._handleSearchAbort);
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this.addEventListener("sl-select", this._handleSelect);
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this.addEventListener("sl-clear", this._handleClear)
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if(this._oldChange)
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{
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// Search messes up event order somehow, selecting an option fires the change event before
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// the widget is finished adjusting, losing the value
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// This is not optimal, but we need to get that change event
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this.removeEventListener("change", this._oldChange);
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}
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this._searchButtonNode.addEventListener("click", this._handleSearchButtonClick);
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}
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protected _unbindListeners()
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{
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this.removeEventListener("sl-blur", this._handleSearchAbort);
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this.removeEventListener("sl-select", this._handleSelect);
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this.removeEventListener("sl-clear", this._handleClear)
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this.removeEventListener("change", this._handleChange);
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this._searchButtonNode.removeEventListener("click", this._handleSearchButtonClick);
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}
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handleMenuShow()
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{
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super.handleMenuShow();
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if(this.searchEnabled)
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{
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this._activeControls?.classList.add("active");
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this._searchInputNode.focus();
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this._searchInputNode.select();
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}
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}
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handleMenuHide()
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{
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super.handleMenuHide();
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if(this.searchEnabled)
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{
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this._activeControls?.classList.remove("active");
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}
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}
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_handleDoubleClick(event : MouseEvent)
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{
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// No edit (shouldn't happen...)
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if(!this.editModeEnabled)
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{
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return;
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}
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// Find the tag
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const path = event.composedPath();
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const tag = <Et2Tag>path.find((el) => el instanceof Et2Tag);
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this.startEdit(tag);
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}
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/**
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* An option was selected
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*/
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_handleSelect(event)
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{
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// If they just chose one from the list, re-focus the search
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if(this.multiple && this.searchEnabled)
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{
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this._searchInputNode.focus();
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// Scroll the new tag into view
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if(event.detail && event.detail.item)
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{
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this.updateComplete.then(() =>
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{
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this.shadowRoot.querySelector("et2-tag[value='" + event.detail.item.value + "']").scrollIntoView();
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});
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}
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}
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}
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/**
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* Value was cleared
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*/
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_handleClear()
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{
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if(!this.multiple && this.searchEnabled)
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{
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// Restore label styling
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this.shadowRoot.querySelector("[part='display-label']").style.display = "";
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// Start searching again
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this.updateComplete.then(() => this.handleMenuShow())
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}
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}
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/**
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* Handle keypresses inside the search input
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* @param {KeyboardEvent} event
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* @protected
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*/
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protected _handleSearchKeyDown(event : KeyboardEvent)
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{
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this._activeControls?.classList.add("active");
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this.dropdown.show();
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// Pass off some keys to select
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if(['ArrowDown', 'ArrowUp', 'Home', 'End'].includes(event.key))
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{
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return this.handleKeyDown(event);
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}
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// Don't allow event to bubble or it will interact with select
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event.stopImmediatePropagation();
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if(Et2WidgetWithSearch.TAG_BREAK.indexOf(event.key) !== -1 && this.allowFreeEntries && this.createFreeEntry(this._searchInputNode.value))
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{
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event.preventDefault();
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this._searchInputNode.value = "";
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if(!this.multiple)
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{
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this.dropdown.hide();
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}
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}
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else if(event.key == "Enter")
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{
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event.preventDefault();
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this.startSearch();
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}
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else if(event.key == "Escape")
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{
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this._handleSearchAbort(event);
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}
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// Start the search automatically if they have enough letters
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clearTimeout(this._searchTimeout);
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if(this._searchInputNode.value.length >= Et2WidgetWithSearch.MIN_CHARS)
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{
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this._searchTimeout = window.setTimeout(() => {this.startSearch()}, Et2WidgetWithSearch.SEARCH_TIMEOUT);
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}
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}
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protected _handleEditKeyDown(event : KeyboardEvent)
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{
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if(event.key == "Enter" && this.allowFreeEntries)
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{
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event.preventDefault();
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// Stop propagation, or parent key handler will add again
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event.stopImmediatePropagation();
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this.stopEdit();
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}
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// Abort edit, put original value back
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else if(event.key == "Escape")
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{
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this.stopEdit(true);
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}
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}
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/**
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* Start searching
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*
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* If we have local options, we'll search & display any matches.
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* If serverUrl is set, we'll ask the server for results as well.
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*/
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public startSearch()
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{
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// Show a spinner instead of search button
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this._searchButtonNode.style.display = "hidden";
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let spinner = document.createElement("sl-spinner");
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spinner.slot = this._searchButtonNode.slot;
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this.appendChild(spinner);
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// Start the searches
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Promise.all([
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this.localSearch(this._searchInputNode.value, this.searchOptions),
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this.remoteSearch(this._searchInputNode.value, this.searchOptions)
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]).then(() =>
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{
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spinner.remove();
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});
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}
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/**
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* Filter the local options
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*
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* @param {string} search
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* @protected
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*/
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protected localSearch(search : string, options : object) : Promise<void>
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{
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return new Promise((resolve) =>
|
|
{
|
|
this.localItems.forEach((item) =>
|
|
{
|
|
let match = this.searchMatch(search, item);
|
|
item.classList.toggle("match", match);
|
|
// set disabled so arrow keys step over. Might be a better way to handle that
|
|
item.disabled = !match;
|
|
item.classList.toggle("no-match", !match);
|
|
})
|
|
resolve();
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Ask for remote options and add them in unconditionally
|
|
* @param {string} search
|
|
* @protected
|
|
*/
|
|
protected remoteSearch(search : string, options : object)
|
|
{
|
|
// Remove existing remote items
|
|
this.remoteItems.forEach(i => i.remove());
|
|
|
|
if(!this.searchUrl)
|
|
{
|
|
return Promise.resolve();
|
|
}
|
|
|
|
// Fire off the query
|
|
let promise = this.remoteQuery(search, options);
|
|
|
|
return promise;
|
|
}
|
|
|
|
/**
|
|
* Actually query the server.
|
|
*
|
|
* This can be overridden to change request parameters
|
|
*
|
|
* @param {string} search
|
|
* @param {object} options
|
|
* @returns {any}
|
|
* @protected
|
|
*/
|
|
protected remoteQuery(search : string, options : object)
|
|
{
|
|
return this.egw().request(this.searchUrl, [search]).then((result) =>
|
|
{
|
|
this.processRemoteResults(result);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Add in remote results
|
|
* @param results
|
|
* @protected
|
|
*/
|
|
protected processRemoteResults(results)
|
|
{
|
|
let entries = cleanSelectOptions(results);
|
|
|
|
// Add a "remote" class so we can tell these apart from any local results
|
|
entries.forEach((entry) => entry.class = (entry.class || "") + " remote");
|
|
|
|
let target = this._optionTargetNode || this;
|
|
if(target)
|
|
{
|
|
// Keep local options first, add in remote options
|
|
this.select_options.filter(function(item)
|
|
{
|
|
let i = entries.findIndex(x => (x.value == item.value));
|
|
if(i <= -1)
|
|
{
|
|
entries.push(item);
|
|
}
|
|
return null;
|
|
});
|
|
|
|
render(html`${repeat(<SelectOption[]>entries, (option : SelectOption) => option.value, this._optionTemplate.bind(this))}`,
|
|
target
|
|
);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check if one of our [local] items matches the search
|
|
*
|
|
* @param search
|
|
* @param item
|
|
* @returns {boolean}
|
|
* @protected
|
|
*/
|
|
protected searchMatch(search, item) : boolean
|
|
{
|
|
if(!item || !item.value)
|
|
{
|
|
return false;
|
|
}
|
|
if(item.textContent?.toLowerCase().includes(search.toLowerCase()))
|
|
{
|
|
return true;
|
|
}
|
|
if(typeof item.value == "string")
|
|
{
|
|
return item.value.includes(search.toLowerCase());
|
|
}
|
|
return item.value == search;
|
|
}
|
|
|
|
/**
|
|
* Create an entry that is not in the options and add it to the value
|
|
*
|
|
* @param {string} text Used as both value and label
|
|
*/
|
|
public createFreeEntry(text : string) : boolean
|
|
{
|
|
if(!this.validateFreeEntry(text))
|
|
{
|
|
return false;
|
|
}
|
|
// Make sure not to double-add
|
|
if(!this.select_options.find(o => o.value == text))
|
|
{
|
|
this.select_options.push(<SelectOption>{
|
|
value: text,
|
|
label: text
|
|
});
|
|
this.requestUpdate('select_options');
|
|
}
|
|
|
|
// Make sure not to double-add
|
|
if(this.multiple && this.value.indexOf(text) == -1)
|
|
{
|
|
this.value.push(text);
|
|
}
|
|
else if(!this.multiple)
|
|
{
|
|
this.value = text;
|
|
return;
|
|
}
|
|
|
|
// Once added to options, add to value / tags
|
|
this.updateComplete.then(() =>
|
|
{
|
|
this.menuItems.forEach(o =>
|
|
{
|
|
if(o.value == text)
|
|
{
|
|
o.dispatchEvent(new Event("click"));
|
|
}
|
|
});
|
|
this.syncItemsFromValue();
|
|
});
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Check if a free entry value is acceptable.
|
|
* We use validators directly using the proposed value
|
|
*
|
|
* @param text
|
|
* @returns {boolean}
|
|
*/
|
|
public validateFreeEntry(text) : boolean
|
|
{
|
|
let validators = [...this.validators, ...this.defaultValidators];
|
|
let result = validators.filter(v =>
|
|
v.execute(text, v.param, {node: this}),
|
|
);
|
|
return result.length == 0;
|
|
}
|
|
|
|
/**
|
|
* Start editing an existing (free) tag
|
|
*
|
|
* @param {Et2Tag} tag
|
|
*/
|
|
public startEdit(tag : Et2Tag)
|
|
{
|
|
const tag_value = tag.textContent.trim();
|
|
|
|
// hide the menu
|
|
//this.dropdown.hide()
|
|
|
|
// Turn on edit UI
|
|
this._activeControls.classList.add("editing", "active");
|
|
|
|
// Pre-set value to tag value
|
|
this._editInputNode.value = tag_value
|
|
this._editInputNode.focus();
|
|
|
|
// Remove from value & DOM. If they finish the edit, the new one will be added.
|
|
this.value = this.value.filter(v => v !== tag_value);
|
|
this.select_options = this.select_options.filter(v => v.value !== tag_value);
|
|
this.querySelector("[value='" + tag_value + "']").remove();
|
|
tag.remove();
|
|
|
|
// If they abort the edit, they'll want the original back.
|
|
this._editInputNode.dataset.initial = tag_value;
|
|
}
|
|
|
|
protected stopEdit(abort = false)
|
|
{
|
|
let value = abort ? this._editInputNode.dataset.initial : this._editInputNode.value;
|
|
|
|
this.createFreeEntry(value);
|
|
delete this._editInputNode.dataset.initial;
|
|
|
|
this._activeControls.classList.remove("editing", "active");
|
|
}
|
|
|
|
protected _handleSearchButtonClick(e)
|
|
{
|
|
this.handleMenuShow();
|
|
}
|
|
|
|
protected _handleSearchAbort(e)
|
|
{
|
|
this._activeControls.classList.remove("active");
|
|
this._searchInputNode.value = "";
|
|
|
|
// Reset options. It might be faster to re-create instead.
|
|
this.menuItems.forEach((item) =>
|
|
{
|
|
item.disabled = false;
|
|
item.classList.remove("match");
|
|
item.classList.remove("no-match");
|
|
})
|
|
this.syncItemsFromValue();
|
|
}
|
|
}
|
|
|
|
return Et2WidgetWithSearch as unknown as Constructor<SearchMixinInterface> & T;
|
|
} |