Add an autocomplete component
This commit is contained in:
JC Brand
parent
4c872164c3
commit
60b3f7ae25
@ -58,7 +58,7 @@
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textarea.value = '@';
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textarea.value = '@';
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view.onKeyUp(at_event);
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view.onKeyUp(at_event);
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expect(view.el.querySelectorAll('.suggestion-box__results li').length).toBe(4);
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await u.waitUntil(() => view.el.querySelectorAll('.suggestion-box__results li').length === 4);
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expect(view.el.querySelector('.suggestion-box__results li:first-child').textContent).toBe('dick');
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expect(view.el.querySelector('.suggestion-box__results li:first-child').textContent).toBe('dick');
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expect(view.el.querySelector('.suggestion-box__results li:nth-child(2)').textContent).toBe('harry');
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expect(view.el.querySelector('.suggestion-box__results li:nth-child(2)').textContent).toBe('harry');
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expect(view.el.querySelector('.suggestion-box__results li:nth-child(3)').textContent).toBe('jane');
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expect(view.el.querySelector('.suggestion-box__results li:nth-child(3)').textContent).toBe('jane');
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@ -100,7 +100,7 @@
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}
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}
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view.onKeyDown(tab_event);
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view.onKeyDown(tab_event);
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view.onKeyUp(tab_event);
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view.onKeyUp(tab_event);
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expect(view.el.querySelector('.suggestion-box__results').hidden).toBeFalsy();
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await u.waitUntil(() => view.el.querySelector('.suggestion-box__results').hidden === false);
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expect(view.el.querySelectorAll('.suggestion-box__results li').length).toBe(1);
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expect(view.el.querySelectorAll('.suggestion-box__results li').length).toBe(1);
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expect(view.el.querySelector('.suggestion-box__results li').textContent).toBe('some1');
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expect(view.el.querySelector('.suggestion-box__results li').textContent).toBe('some1');
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@ -115,7 +115,7 @@
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textarea.value = textarea.value.slice(0, textarea.value.length-1)
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textarea.value = textarea.value.slice(0, textarea.value.length-1)
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view.onKeyUp(backspace_event);
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view.onKeyUp(backspace_event);
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}
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}
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expect(view.el.querySelector('.suggestion-box__results').hidden).toBeTruthy();
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await u.waitUntil(() => view.el.querySelector('.suggestion-box__results').hidden === true);
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presence = $pres({
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presence = $pres({
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'to': 'romeo@montague.lit/orchard',
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'to': 'romeo@montague.lit/orchard',
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@ -132,7 +132,7 @@
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textarea.value = "hello s s";
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textarea.value = "hello s s";
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view.onKeyDown(tab_event);
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view.onKeyDown(tab_event);
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view.onKeyUp(tab_event);
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view.onKeyUp(tab_event);
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expect(view.el.querySelector('.suggestion-box__results').hidden).toBeFalsy();
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await u.waitUntil(() => view.el.querySelector('.suggestion-box__results').hidden === false);
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expect(view.el.querySelectorAll('.suggestion-box__results li').length).toBe(2);
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expect(view.el.querySelectorAll('.suggestion-box__results li').length).toBe(2);
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const up_arrow_event = {
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const up_arrow_event = {
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@ -170,10 +170,11 @@
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textarea.value = "hello z";
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textarea.value = "hello z";
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view.onKeyDown(tab_event);
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view.onKeyDown(tab_event);
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view.onKeyUp(tab_event);
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view.onKeyUp(tab_event);
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await u.waitUntil(() => view.el.querySelector('.suggestion-box__results').hidden === false);
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view.onKeyDown(tab_event);
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view.onKeyDown(tab_event);
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view.onKeyUp(tab_event);
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view.onKeyUp(tab_event);
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expect(textarea.value).toBe('hello @z3r0 ');
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await u.waitUntil(() => textarea.value === 'hello @z3r0 ');
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done();
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done();
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}));
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}));
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@ -212,7 +213,7 @@
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view.onKeyDown(backspace_event);
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view.onKeyDown(backspace_event);
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textarea.value = "hello @some1"; // Mimic backspace
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textarea.value = "hello @some1"; // Mimic backspace
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view.onKeyUp(backspace_event);
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view.onKeyUp(backspace_event);
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expect(view.el.querySelector('.suggestion-box__results').hidden).toBeFalsy();
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await u.waitUntil(() => view.el.querySelector('.suggestion-box__results').hidden === false);
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expect(view.el.querySelectorAll('.suggestion-box__results li').length).toBe(1);
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expect(view.el.querySelectorAll('.suggestion-box__results li').length).toBe(1);
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expect(view.el.querySelector('.suggestion-box__results li').textContent).toBe('some1');
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expect(view.el.querySelector('.suggestion-box__results li').textContent).toBe('some1');
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done();
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done();
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73
src/components/autocomplete.js
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73
src/components/autocomplete.js
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@ -0,0 +1,73 @@
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import { AutoComplete, FILTER_CONTAINS, FILTER_STARTSWITH } from "../converse-autocomplete.js";
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import { CustomElement } from './element.js';
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import { html } from 'lit-element';
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export class AutoCompleteComponent extends CustomElement {
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static get properties () {
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return {
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'getAutoCompleteList': { type: Function },
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'auto_evaluate': { type: Boolean },
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'auto_first': { type: Boolean }, // Should the first element be automatically selected?
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'filter': { type: String },
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'include_triggers': { type: String },
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'min_chars': { type: Number },
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'name': { type: String },
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'placeholder': { type: String },
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'triggers': { type: String },
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}
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}
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constructor () {
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super();
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this.auto_evaluate = true; // Should evaluation happen automatically without any particular key as trigger?
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this.auto_first = false; // Should the first element be automatically selected?
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this.filter = 'contains';
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this.include_triggers = ''; // Space separated chars which should be included in the returned value
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this.match_current_word = false; // Match only the current word, otherwise all input is matched
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this.max_items = 10;
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this.min_chars = 1;
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this.triggers = ''; // String of space separated chars
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}
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render () {
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return html`
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<div class="suggestion-box suggestion-box__name">
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<ul class="suggestion-box__results suggestion-box__results--above" hidden=""></ul>
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<input type="text" name="${this.name}"
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autocomplete="off"
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@keydown=${this.onKeyDown}
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@keyup=${this.onKeyUp}
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class="form-control suggestion-box__input"
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placeholder="${this.placeholder}"/>
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<span class="suggestion-box__additions visually-hidden" role="status" aria-live="assertive" aria-relevant="additions"></span>
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</div>
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`;
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}
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firstUpdated () {
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this.auto_complete = new AutoComplete(this.firstElementChild, {
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'ac_triggers': this.triggers.split(' '),
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'auto_evaluate': this.auto_evaluate,
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'auto_first': this.auto_first,
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'filter': this.filter == 'contains' ? FILTER_CONTAINS : FILTER_STARTSWITH,
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'include_triggers': [],
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'list': () => this.getAutoCompleteList(),
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'match_current_word': true,
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'max_items': this.max_items,
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'min_chars': this.min_chars,
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});
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this.auto_complete.on('suggestion-box-selectcomplete', () => (this.auto_completing = false));
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}
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onKeyDown (ev) {
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this.auto_complete.onKeyDown(ev);
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}
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onKeyUp (ev) {
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this.auto_complete.evaluate(ev);
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}
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}
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window.customElements.define('converse-autocomplete', AutoCompleteComponent);
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@ -12,404 +12,411 @@ import converse from "@converse/headless/converse-core";
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const u = converse.env.utils;
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const u = converse.env.utils;
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export const FILTER_CONTAINS = function (text, input) {
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return RegExp(helpers.regExpEscape(input.trim()), "i").test(text);
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};
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export const FILTER_STARTSWITH = function (text, input) {
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return RegExp("^" + helpers.regExpEscape(input.trim()), "i").test(text);
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};
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const SORT_BYLENGTH = function (a, b) {
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if (a.length !== b.length) {
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return a.length - b.length;
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}
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return a < b? -1 : 1;
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};
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const ITEM = (text, input) => {
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input = input.trim();
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const element = document.createElement("li");
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element.setAttribute("aria-selected", "false");
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const regex = new RegExp("("+input+")", "ig");
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const parts = input ? text.split(regex) : [text];
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parts.forEach((txt) => {
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if (input && txt.match(regex)) {
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const match = document.createElement("mark");
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match.textContent = txt;
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element.appendChild(match);
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} else {
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element.appendChild(document.createTextNode(txt));
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}
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});
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return element;
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};
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const helpers = {
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getElement (expr, el) {
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return typeof expr === "string"? (el || document).querySelector(expr) : expr || null;
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},
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bind (element, o) {
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if (element) {
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for (var event in o) {
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if (!Object.prototype.hasOwnProperty.call(o, event)) {
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continue;
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}
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const callback = o[event];
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event.split(/\s+/).forEach(event => element.addEventListener(event, callback));
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}
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}
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},
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unbind (element, o) {
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if (element) {
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for (var event in o) {
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if (!Object.prototype.hasOwnProperty.call(o, event)) {
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continue;
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}
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const callback = o[event];
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event.split(/\s+/).forEach(event => element.removeEventListener(event, callback));
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}
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}
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},
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regExpEscape (s) {
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return s.replace(/[-\\^$*+?.()|[\]{}]/g, "\\$&");
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}
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}
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class Suggestion extends String {
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constructor (data) {
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super();
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const o = Array.isArray(data)
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? { label: data[0], value: data[1] }
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: typeof data === "object" && "label" in data && "value" in data ? data : { label: data, value: data };
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this.label = o.label || o.value;
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this.value = o.value;
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}
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get lenth () {
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return this.label.length;
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}
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toString () {
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return "" + this.label;
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}
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valueOf () {
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return this.toString();
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}
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}
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export class AutoComplete {
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constructor (el, config={}) {
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this.is_opened = false;
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if (u.hasClass('suggestion-box', el)) {
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this.container = el;
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} else {
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this.container = el.querySelector('.suggestion-box');
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}
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this.input = this.container.querySelector('.suggestion-box__input');
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this.input.setAttribute("aria-autocomplete", "list");
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this.ul = this.container.querySelector('.suggestion-box__results');
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this.status = this.container.querySelector('.suggestion-box__additions');
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Object.assign(this, {
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'match_current_word': false, // Match only the current word, otherwise all input is matched
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'ac_triggers': [], // Array of keys (`ev.key`) values that will trigger auto-complete
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'include_triggers': [], // Array of trigger keys which should be included in the returned value
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'min_chars': 2,
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'max_items': 10,
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'auto_evaluate': true, // Should evaluation happen automatically without any particular key as trigger?
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'auto_first': false, // Should the first element be automatically selected?
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'data': a => a,
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'filter': FILTER_CONTAINS,
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'sort': config.sort === false ? false : SORT_BYLENGTH,
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'item': ITEM
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}, config);
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this.index = -1;
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this.bindEvents()
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if (this.input.hasAttribute("list")) {
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this.list = "#" + this.input.getAttribute("list");
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this.input.removeAttribute("list");
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} else {
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this.list = this.input.getAttribute("data-list") || config.list || [];
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}
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}
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bindEvents () {
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// Bind events
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const input = {
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"blur": () => this.close({'reason': 'blur'})
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}
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if (this.auto_evaluate) {
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input["input"] = () => this.evaluate();
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}
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this._events = {
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'input': input,
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'form': {
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"submit": () => this.close({'reason': 'submit'})
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},
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'ul': {
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"mousedown": (ev) => this.onMouseDown(ev),
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"mouseover": (ev) => this.onMouseOver(ev)
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}
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};
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helpers.bind(this.input, this._events.input);
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helpers.bind(this.input.form, this._events.form);
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helpers.bind(this.ul, this._events.ul);
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}
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set list (list) {
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if (Array.isArray(list) || typeof list === "function") {
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this._list = list;
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} else if (typeof list === "string" && list.includes(",")) {
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this._list = list.split(/\s*,\s*/);
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} else { // Element or CSS selector
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list = helpers.getElement(list);
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if (list && list.children) {
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const items = [];
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Array.prototype.slice.apply(list.children).forEach(function (el) {
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if (!el.disabled) {
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const text = el.textContent.trim(),
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value = el.value || text,
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label = el.label || text;
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if (value !== "") {
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items.push({ label: label, value: value });
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}
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}
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});
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this._list = items;
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}
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}
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if (document.activeElement === this.input) {
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this.evaluate();
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}
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}
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get selected () {
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return this.index > -1;
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}
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get opened () {
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return this.is_opened;
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}
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close (o) {
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if (!this.opened) {
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return;
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}
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this.ul.setAttribute("hidden", "");
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this.is_opened = false;
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this.index = -1;
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this.trigger("suggestion-box-close", o || {});
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}
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insertValue (suggestion) {
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if (this.match_current_word) {
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u.replaceCurrentWord(this.input, suggestion.value);
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} else {
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this.input.value = suggestion.value;
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}
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}
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open () {
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this.ul.removeAttribute("hidden");
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this.is_opened = true;
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if (this.auto_first && this.index === -1) {
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this.goto(0);
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}
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this.trigger("suggestion-box-open");
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}
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destroy () {
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||||||
|
//remove events from the input and its form
|
||||||
|
helpers.unbind(this.input, this._events.input);
|
||||||
|
helpers.unbind(this.input.form, this._events.form);
|
||||||
|
this.input.removeAttribute("aria-autocomplete");
|
||||||
|
}
|
||||||
|
|
||||||
|
next () {
|
||||||
|
const count = this.ul.children.length;
|
||||||
|
this.goto(this.index < count - 1 ? this.index + 1 : (count ? 0 : -1) );
|
||||||
|
}
|
||||||
|
|
||||||
|
previous () {
|
||||||
|
const count = this.ul.children.length,
|
||||||
|
pos = this.index - 1;
|
||||||
|
this.goto(this.selected && pos !== -1 ? pos : count - 1);
|
||||||
|
}
|
||||||
|
|
||||||
|
goto (i) {
|
||||||
|
// Should not be used directly, highlights specific item without any checks!
|
||||||
|
const list = this.ul.children;
|
||||||
|
if (this.selected) {
|
||||||
|
list[this.index].setAttribute("aria-selected", "false");
|
||||||
|
}
|
||||||
|
this.index = i;
|
||||||
|
|
||||||
|
if (i > -1 && list.length > 0) {
|
||||||
|
list[i].setAttribute("aria-selected", "true");
|
||||||
|
list[i].focus();
|
||||||
|
this.status.textContent = list[i].textContent;
|
||||||
|
// scroll to highlighted element in case parent's height is fixed
|
||||||
|
this.ul.scrollTop = list[i].offsetTop - this.ul.clientHeight + list[i].clientHeight;
|
||||||
|
this.trigger("suggestion-box-highlight", {'text': this.suggestions[this.index]});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
select (selected) {
|
||||||
|
if (selected) {
|
||||||
|
this.index = u.siblingIndex(selected);
|
||||||
|
} else {
|
||||||
|
selected = this.ul.children[this.index];
|
||||||
|
}
|
||||||
|
if (selected) {
|
||||||
|
const suggestion = this.suggestions[this.index];
|
||||||
|
this.insertValue(suggestion);
|
||||||
|
this.close({'reason': 'select'});
|
||||||
|
this.auto_completing = false;
|
||||||
|
this.trigger("suggestion-box-selectcomplete", {'text': suggestion});
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
onMouseOver (ev) {
|
||||||
|
const li = u.ancestor(ev.target, 'li');
|
||||||
|
if (li) {
|
||||||
|
this.goto(Array.prototype.slice.call(this.ul.children).indexOf(li))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
onMouseDown (ev) {
|
||||||
|
if (ev.button !== 0) {
|
||||||
|
return; // Only select on left click
|
||||||
|
}
|
||||||
|
const li = u.ancestor(ev.target, 'li');
|
||||||
|
if (li) {
|
||||||
|
ev.preventDefault();
|
||||||
|
this.select(li, ev.target);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
onKeyDown (ev) {
|
||||||
|
if (this.opened) {
|
||||||
|
if ([converse.keycodes.ENTER, converse.keycodes.TAB].includes(ev.keyCode) && this.selected) {
|
||||||
|
ev.preventDefault();
|
||||||
|
ev.stopPropagation();
|
||||||
|
this.select();
|
||||||
|
return true;
|
||||||
|
} else if (ev.keyCode === converse.keycodes.ESCAPE) {
|
||||||
|
this.close({'reason': 'esc'});
|
||||||
|
return true;
|
||||||
|
} else if ([converse.keycodes.UP_ARROW, converse.keycodes.DOWN_ARROW].includes(ev.keyCode)) {
|
||||||
|
ev.preventDefault();
|
||||||
|
ev.stopPropagation();
|
||||||
|
this[ev.keyCode === converse.keycodes.UP_ARROW ? "previous" : "next"]();
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if ([converse.keycodes.SHIFT,
|
||||||
|
converse.keycodes.META,
|
||||||
|
converse.keycodes.META_RIGHT,
|
||||||
|
converse.keycodes.ESCAPE,
|
||||||
|
converse.keycodes.ALT
|
||||||
|
].includes(ev.keyCode)) {
|
||||||
|
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (this.ac_triggers.includes(ev.key)) {
|
||||||
|
if (ev.key === "Tab") {
|
||||||
|
ev.preventDefault();
|
||||||
|
}
|
||||||
|
this.auto_completing = true;
|
||||||
|
} else if (ev.key === "Backspace") {
|
||||||
|
const word = u.getCurrentWord(ev.target, ev.target.selectionEnd-1);
|
||||||
|
if (this.ac_triggers.includes(word[0])) {
|
||||||
|
this.auto_completing = true;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
async evaluate (ev) {
|
||||||
|
const selecting = this.selected && ev && (
|
||||||
|
ev.keyCode === converse.keycodes.UP_ARROW ||
|
||||||
|
ev.keyCode === converse.keycodes.DOWN_ARROW
|
||||||
|
);
|
||||||
|
|
||||||
|
if (!this.auto_evaluate && !this.auto_completing || selecting) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
const list = typeof this._list === "function" ? await this._list() : this._list;
|
||||||
|
if (list.length === 0) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
let value = this.match_current_word ? u.getCurrentWord(this.input) : this.input.value;
|
||||||
|
const contains_trigger = this.ac_triggers.includes(value[0]);
|
||||||
|
if (contains_trigger) {
|
||||||
|
this.auto_completing = true;
|
||||||
|
if (!this.include_triggers.includes(ev.key)) {
|
||||||
|
value = value.slice('1');
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if ((contains_trigger || value.length) && value.length >= this.min_chars) {
|
||||||
|
this.index = -1;
|
||||||
|
// Populate list with options that match
|
||||||
|
this.ul.innerHTML = "";
|
||||||
|
|
||||||
|
this.suggestions = list
|
||||||
|
.map(item => new Suggestion(this.data(item, value)))
|
||||||
|
.filter(item => this.filter(item, value));
|
||||||
|
|
||||||
|
if (this.sort !== false) {
|
||||||
|
this.suggestions = this.suggestions.sort(this.sort);
|
||||||
|
}
|
||||||
|
this.suggestions = this.suggestions.slice(0, this.max_items);
|
||||||
|
this.suggestions.forEach(text => this.ul.appendChild(this.item(text, value)));
|
||||||
|
|
||||||
|
if (this.ul.children.length === 0) {
|
||||||
|
this.close({'reason': 'nomatches'});
|
||||||
|
} else {
|
||||||
|
this.open();
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
this.close({'reason': 'nomatches'});
|
||||||
|
if (!contains_trigger) {
|
||||||
|
this.auto_completing = false;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// Make it an event emitter
|
||||||
|
Object.assign(AutoComplete.prototype, Events);
|
||||||
|
|
||||||
|
|
||||||
converse.plugins.add("converse-autocomplete", {
|
converse.plugins.add("converse-autocomplete", {
|
||||||
|
|
||||||
initialize () {
|
initialize () {
|
||||||
const { _converse } = this;
|
const _converse = this._converse;
|
||||||
|
_converse.FILTER_CONTAINS = FILTER_CONTAINS;
|
||||||
_converse.FILTER_CONTAINS = function (text, input) {
|
_converse.FILTER_STARTSWITH = FILTER_STARTSWITH;
|
||||||
return RegExp(helpers.regExpEscape(input.trim()), "i").test(text);
|
|
||||||
};
|
|
||||||
|
|
||||||
_converse.FILTER_STARTSWITH = function (text, input) {
|
|
||||||
return RegExp("^" + helpers.regExpEscape(input.trim()), "i").test(text);
|
|
||||||
};
|
|
||||||
|
|
||||||
const SORT_BYLENGTH = function (a, b) {
|
|
||||||
if (a.length !== b.length) {
|
|
||||||
return a.length - b.length;
|
|
||||||
}
|
|
||||||
return a < b? -1 : 1;
|
|
||||||
};
|
|
||||||
|
|
||||||
const ITEM = (text, input) => {
|
|
||||||
input = input.trim();
|
|
||||||
const element = document.createElement("li");
|
|
||||||
element.setAttribute("aria-selected", "false");
|
|
||||||
|
|
||||||
const regex = new RegExp("("+input+")", "ig");
|
|
||||||
const parts = input ? text.split(regex) : [text];
|
|
||||||
parts.forEach((txt) => {
|
|
||||||
if (input && txt.match(regex)) {
|
|
||||||
const match = document.createElement("mark");
|
|
||||||
match.textContent = txt;
|
|
||||||
element.appendChild(match);
|
|
||||||
} else {
|
|
||||||
element.appendChild(document.createTextNode(txt));
|
|
||||||
}
|
|
||||||
});
|
|
||||||
return element;
|
|
||||||
};
|
|
||||||
|
|
||||||
|
|
||||||
class Suggestion extends String {
|
|
||||||
|
|
||||||
constructor (data) {
|
|
||||||
super();
|
|
||||||
const o = Array.isArray(data)
|
|
||||||
? { label: data[0], value: data[1] }
|
|
||||||
: typeof data === "object" && "label" in data && "value" in data ? data : { label: data, value: data };
|
|
||||||
|
|
||||||
this.label = o.label || o.value;
|
|
||||||
this.value = o.value;
|
|
||||||
}
|
|
||||||
|
|
||||||
get lenth () {
|
|
||||||
return this.label.length;
|
|
||||||
}
|
|
||||||
|
|
||||||
toString () {
|
|
||||||
return "" + this.label;
|
|
||||||
}
|
|
||||||
|
|
||||||
valueOf () {
|
|
||||||
return this.toString();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
class AutoComplete {
|
|
||||||
|
|
||||||
constructor (el, config={}) {
|
|
||||||
this.is_opened = false;
|
|
||||||
|
|
||||||
if (u.hasClass('.suggestion-box', el)) {
|
|
||||||
this.container = el;
|
|
||||||
} else {
|
|
||||||
this.container = el.querySelector('.suggestion-box');
|
|
||||||
}
|
|
||||||
this.input = this.container.querySelector('.suggestion-box__input');
|
|
||||||
this.input.setAttribute("aria-autocomplete", "list");
|
|
||||||
|
|
||||||
this.ul = this.container.querySelector('.suggestion-box__results');
|
|
||||||
this.status = this.container.querySelector('.suggestion-box__additions');
|
|
||||||
|
|
||||||
Object.assign(this, {
|
|
||||||
'match_current_word': false, // Match only the current word, otherwise all input is matched
|
|
||||||
'ac_triggers': [], // Array of keys (`ev.key`) values that will trigger auto-complete
|
|
||||||
'include_triggers': [], // Array of trigger keys which should be included in the returned value
|
|
||||||
'min_chars': 2,
|
|
||||||
'max_items': 10,
|
|
||||||
'auto_evaluate': true, // Should evaluation happen automatically without any particular key as trigger?
|
|
||||||
'auto_first': false, // Should the first element be automatically selected?
|
|
||||||
'data': a => a,
|
|
||||||
'filter': _converse.FILTER_CONTAINS,
|
|
||||||
'sort': config.sort === false ? false : SORT_BYLENGTH,
|
|
||||||
'item': ITEM
|
|
||||||
}, config);
|
|
||||||
|
|
||||||
this.index = -1;
|
|
||||||
|
|
||||||
this.bindEvents()
|
|
||||||
|
|
||||||
if (this.input.hasAttribute("list")) {
|
|
||||||
this.list = "#" + this.input.getAttribute("list");
|
|
||||||
this.input.removeAttribute("list");
|
|
||||||
} else {
|
|
||||||
this.list = this.input.getAttribute("data-list") || config.list || [];
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
bindEvents () {
|
|
||||||
// Bind events
|
|
||||||
const input = {
|
|
||||||
"blur": () => this.close({'reason': 'blur'})
|
|
||||||
}
|
|
||||||
if (this.auto_evaluate) {
|
|
||||||
input["input"] = () => this.evaluate();
|
|
||||||
}
|
|
||||||
|
|
||||||
this._events = {
|
|
||||||
'input': input,
|
|
||||||
'form': {
|
|
||||||
"submit": () => this.close({'reason': 'submit'})
|
|
||||||
},
|
|
||||||
'ul': {
|
|
||||||
"mousedown": (ev) => this.onMouseDown(ev),
|
|
||||||
"mouseover": (ev) => this.onMouseOver(ev)
|
|
||||||
}
|
|
||||||
};
|
|
||||||
helpers.bind(this.input, this._events.input);
|
|
||||||
helpers.bind(this.input.form, this._events.form);
|
|
||||||
helpers.bind(this.ul, this._events.ul);
|
|
||||||
}
|
|
||||||
|
|
||||||
set list (list) {
|
|
||||||
if (Array.isArray(list) || typeof list === "function") {
|
|
||||||
this._list = list;
|
|
||||||
} else if (typeof list === "string" && list.includes(",")) {
|
|
||||||
this._list = list.split(/\s*,\s*/);
|
|
||||||
} else { // Element or CSS selector
|
|
||||||
list = helpers.getElement(list);
|
|
||||||
if (list && list.children) {
|
|
||||||
const items = [];
|
|
||||||
Array.prototype.slice.apply(list.children).forEach(function (el) {
|
|
||||||
if (!el.disabled) {
|
|
||||||
const text = el.textContent.trim(),
|
|
||||||
value = el.value || text,
|
|
||||||
label = el.label || text;
|
|
||||||
if (value !== "") {
|
|
||||||
items.push({ label: label, value: value });
|
|
||||||
}
|
|
||||||
}
|
|
||||||
});
|
|
||||||
this._list = items;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (document.activeElement === this.input) {
|
|
||||||
this.evaluate();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
get selected () {
|
|
||||||
return this.index > -1;
|
|
||||||
}
|
|
||||||
|
|
||||||
get opened () {
|
|
||||||
return this.is_opened;
|
|
||||||
}
|
|
||||||
|
|
||||||
close (o) {
|
|
||||||
if (!this.opened) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
this.ul.setAttribute("hidden", "");
|
|
||||||
this.is_opened = false;
|
|
||||||
this.index = -1;
|
|
||||||
this.trigger("suggestion-box-close", o || {});
|
|
||||||
}
|
|
||||||
|
|
||||||
insertValue (suggestion) {
|
|
||||||
if (this.match_current_word) {
|
|
||||||
u.replaceCurrentWord(this.input, suggestion.value);
|
|
||||||
} else {
|
|
||||||
this.input.value = suggestion.value;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
open () {
|
|
||||||
this.ul.removeAttribute("hidden");
|
|
||||||
this.is_opened = true;
|
|
||||||
|
|
||||||
if (this.auto_first && this.index === -1) {
|
|
||||||
this.goto(0);
|
|
||||||
}
|
|
||||||
this.trigger("suggestion-box-open");
|
|
||||||
}
|
|
||||||
|
|
||||||
destroy () {
|
|
||||||
//remove events from the input and its form
|
|
||||||
helpers.unbind(this.input, this._events.input);
|
|
||||||
helpers.unbind(this.input.form, this._events.form);
|
|
||||||
this.input.removeAttribute("aria-autocomplete");
|
|
||||||
}
|
|
||||||
|
|
||||||
next () {
|
|
||||||
const count = this.ul.children.length;
|
|
||||||
this.goto(this.index < count - 1 ? this.index + 1 : (count ? 0 : -1) );
|
|
||||||
}
|
|
||||||
|
|
||||||
previous () {
|
|
||||||
const count = this.ul.children.length,
|
|
||||||
pos = this.index - 1;
|
|
||||||
this.goto(this.selected && pos !== -1 ? pos : count - 1);
|
|
||||||
}
|
|
||||||
|
|
||||||
goto (i) {
|
|
||||||
// Should not be used directly, highlights specific item without any checks!
|
|
||||||
const list = this.ul.children;
|
|
||||||
if (this.selected) {
|
|
||||||
list[this.index].setAttribute("aria-selected", "false");
|
|
||||||
}
|
|
||||||
this.index = i;
|
|
||||||
|
|
||||||
if (i > -1 && list.length > 0) {
|
|
||||||
list[i].setAttribute("aria-selected", "true");
|
|
||||||
list[i].focus();
|
|
||||||
this.status.textContent = list[i].textContent;
|
|
||||||
// scroll to highlighted element in case parent's height is fixed
|
|
||||||
this.ul.scrollTop = list[i].offsetTop - this.ul.clientHeight + list[i].clientHeight;
|
|
||||||
this.trigger("suggestion-box-highlight", {'text': this.suggestions[this.index]});
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
select (selected) {
|
|
||||||
if (selected) {
|
|
||||||
this.index = u.siblingIndex(selected);
|
|
||||||
} else {
|
|
||||||
selected = this.ul.children[this.index];
|
|
||||||
}
|
|
||||||
if (selected) {
|
|
||||||
const suggestion = this.suggestions[this.index];
|
|
||||||
this.insertValue(suggestion);
|
|
||||||
this.close({'reason': 'select'});
|
|
||||||
this.auto_completing = false;
|
|
||||||
this.trigger("suggestion-box-selectcomplete", {'text': suggestion});
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
onMouseOver (ev) {
|
|
||||||
const li = u.ancestor(ev.target, 'li');
|
|
||||||
if (li) {
|
|
||||||
this.goto(Array.prototype.slice.call(this.ul.children).indexOf(li))
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
onMouseDown (ev) {
|
|
||||||
if (ev.button !== 0) {
|
|
||||||
return; // Only select on left click
|
|
||||||
}
|
|
||||||
const li = u.ancestor(ev.target, 'li');
|
|
||||||
if (li) {
|
|
||||||
ev.preventDefault();
|
|
||||||
this.select(li, ev.target);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
onKeyDown (ev) {
|
|
||||||
if (this.opened) {
|
|
||||||
if ([converse.keycodes.ENTER, converse.keycodes.TAB].includes(ev.keyCode) && this.selected) {
|
|
||||||
ev.preventDefault();
|
|
||||||
ev.stopPropagation();
|
|
||||||
this.select();
|
|
||||||
return true;
|
|
||||||
} else if (ev.keyCode === converse.keycodes.ESCAPE) {
|
|
||||||
this.close({'reason': 'esc'});
|
|
||||||
return true;
|
|
||||||
} else if ([converse.keycodes.UP_ARROW, converse.keycodes.DOWN_ARROW].includes(ev.keyCode)) {
|
|
||||||
ev.preventDefault();
|
|
||||||
ev.stopPropagation();
|
|
||||||
this[ev.keyCode === converse.keycodes.UP_ARROW ? "previous" : "next"]();
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if ([converse.keycodes.SHIFT,
|
|
||||||
converse.keycodes.META,
|
|
||||||
converse.keycodes.META_RIGHT,
|
|
||||||
converse.keycodes.ESCAPE,
|
|
||||||
converse.keycodes.ALT
|
|
||||||
].includes(ev.keyCode)) {
|
|
||||||
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
if (this.ac_triggers.includes(ev.key)) {
|
|
||||||
if (ev.key === "Tab") {
|
|
||||||
ev.preventDefault();
|
|
||||||
}
|
|
||||||
this.auto_completing = true;
|
|
||||||
} else if (ev.key === "Backspace") {
|
|
||||||
const word = u.getCurrentWord(ev.target, ev.target.selectionEnd-1);
|
|
||||||
if (this.ac_triggers.includes(word[0])) {
|
|
||||||
this.auto_completing = true;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
evaluate (ev) {
|
|
||||||
const selecting = this.selected && ev && (
|
|
||||||
ev.keyCode === converse.keycodes.UP_ARROW ||
|
|
||||||
ev.keyCode === converse.keycodes.DOWN_ARROW
|
|
||||||
);
|
|
||||||
|
|
||||||
if (!this.auto_evaluate && !this.auto_completing || selecting) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
const list = typeof this._list === "function" ? this._list() : this._list;
|
|
||||||
if (list.length === 0) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
|
|
||||||
let value = this.match_current_word ? u.getCurrentWord(this.input) : this.input.value;
|
|
||||||
const contains_trigger = this.ac_triggers.includes(value[0]);
|
|
||||||
if (contains_trigger) {
|
|
||||||
this.auto_completing = true;
|
|
||||||
if (!this.include_triggers.includes(ev.key)) {
|
|
||||||
value = value.slice('1');
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if ((contains_trigger || value.length) && value.length >= this.min_chars) {
|
|
||||||
this.index = -1;
|
|
||||||
// Populate list with options that match
|
|
||||||
this.ul.innerHTML = "";
|
|
||||||
|
|
||||||
this.suggestions = list
|
|
||||||
.map(item => new Suggestion(this.data(item, value)))
|
|
||||||
.filter(item => this.filter(item, value));
|
|
||||||
|
|
||||||
if (this.sort !== false) {
|
|
||||||
this.suggestions = this.suggestions.sort(this.sort);
|
|
||||||
}
|
|
||||||
this.suggestions = this.suggestions.slice(0, this.max_items);
|
|
||||||
this.suggestions.forEach(text => this.ul.appendChild(this.item(text, value)));
|
|
||||||
|
|
||||||
if (this.ul.children.length === 0) {
|
|
||||||
this.close({'reason': 'nomatches'});
|
|
||||||
} else {
|
|
||||||
this.open();
|
|
||||||
}
|
|
||||||
} else {
|
|
||||||
this.close({'reason': 'nomatches'});
|
|
||||||
if (!contains_trigger) {
|
|
||||||
this.auto_completing = false;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
// Make it an event emitter
|
|
||||||
Object.assign(AutoComplete.prototype, Events);
|
|
||||||
|
|
||||||
|
|
||||||
const helpers = {
|
|
||||||
|
|
||||||
getElement (expr, el) {
|
|
||||||
return typeof expr === "string"? (el || document).querySelector(expr) : expr || null;
|
|
||||||
},
|
|
||||||
|
|
||||||
bind (element, o) {
|
|
||||||
if (element) {
|
|
||||||
for (var event in o) {
|
|
||||||
if (!Object.prototype.hasOwnProperty.call(o, event)) {
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
const callback = o[event];
|
|
||||||
event.split(/\s+/).forEach(event => element.addEventListener(event, callback));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
},
|
|
||||||
|
|
||||||
unbind (element, o) {
|
|
||||||
if (element) {
|
|
||||||
for (var event in o) {
|
|
||||||
if (!Object.prototype.hasOwnProperty.call(o, event)) {
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
const callback = o[event];
|
|
||||||
event.split(/\s+/).forEach(event => element.removeEventListener(event, callback));
|
|
||||||
}
|
|
||||||
}
|
|
||||||
},
|
|
||||||
|
|
||||||
regExpEscape (s) {
|
|
||||||
return s.replace(/[-\\^$*+?.()|[\]{}]/g, "\\$&");
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
_converse.AutoComplete = AutoComplete;
|
_converse.AutoComplete = AutoComplete;
|
||||||
}
|
}
|
||||||
});
|
});
|
||||||
|
|
||||||
|
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user