Initial version

This commit is contained in:
trading_peter 2022-03-12 23:09:47 +01:00
parent ee29598c54
commit 2f7bb699de
5 changed files with 955 additions and 40 deletions

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# tp-element # tp-dropdown

123
package-lock.json generated Normal file
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@ -0,0 +1,123 @@
{
"name": "@tp/tp-dropdown",
"version": "1.0.0",
"lockfileVersion": 1,
"requires": true,
"dependencies": {
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"lit-element": "^3.2.0",
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}

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@ -1,18 +1,22 @@
{ {
"name": "@tp/tp-element", "name": "@tp/tp-dropdown",
"version": "0.0.1", "version": "1.0.0",
"description": "", "description": "",
"main": "tp-element.js", "main": "tp-dropdown.js",
"scripts": { "scripts": {
"test": "echo \"Error: no test specified\" && exit 1" "test": "echo \"Error: no test specified\" && exit 1"
}, },
"repository": { "repository": {
"type": "git", "type": "git",
"url": "https://gitea.codeblob.work/tp-elements/tp-element.git" "url": "https://gitea.codeblob.work/tp-elements/tp-dropdown.git"
}, },
"author": "trading_peter", "author": "trading_peter",
"license": "Apache-2.0", "license": "Apache-2.0",
"dependencies": { "dependencies": {
"@tp/helpers": "^1.0.1",
"@tp/tp-icon": "^1.0.0",
"@tp/tp-input": "^1.0.3",
"@tp/tp-media-query": "^1.0.0",
"lit": "^2.2.0" "lit": "^2.2.0"
} }
} }

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tp-dropdown.js Normal file
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/**
@license
Copyright (c) 2022 trading_peter
This program is available under Apache License Version 2.0
*/
import '@tp/tp-icon/tp-icon.js';
import '@tp/tp-input/tp-input.js';
import '@tp/tp-media-query/tp-media-query.js';
import { LitElement, html, svg, css } from 'lit';
import { FormElement } from '@tp/helpers/form-element.js';
import { Position } from '@tp/helpers/position.js';
import { DomQuery } from '@tp/helpers/dom-query.js';
import { EventHelpers } from '@tp/helpers/event-helpers.js';
import { closest } from '@tp/helpers/closest.js';
import { ControlState } from '@tp/helpers/control-state.js';
import { isDefined } from '@tp/helpers/isDefined.js';
const mixins = [
FormElement,
Position,
DomQuery,
EventHelpers,
ControlState
];
const BaseElement = mixins.reduce((baseClass, mixin) => {
return mixin(baseClass);
}, LitElement);
class TpDropdown extends BaseElement {
static get styles() {
return [
css`
:host {
display: block;
position: relative;
cursor: pointer;
outline: none;
--shadow-2dp: 0 2px 2px 0 rgba(0, 0, 0, 0.14),
0 1px 5px 0 rgba(0, 0, 0, 0.12),
0 3px 1px -2px rgba(0, 0, 0, 0.2);
}
[hidden] {
display: none;
}
.selector {
display: flex;
flex-direction: row;
align-items: center;
border: solid 1px #9E9E9E;
border-radius: 2px;
}
:host([invalid]) .selector {
border: solid 1px #B71C1C;
}
:host([focused]) .selector {
border: solid 1px #039BE5;
}
:host([no-overflow]) #selItem {
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
.selector #selItem {
flex: 1;
padding-left: 5px;
overflow: hidden;
text-overflow: ellipsis;
}
#filter {
background: #f7f7f7;
padding: 7px 10px;
border-bottom: solid 1px #ececec;
}
#filter tp-icon {
--tp-icon-width: 16px;
--tp-icon-height: 16px;
opacity: 0.5;
transition: opacity 0.3s;
}
#filter tp-icon:hover {
opacity: 1;
}
.toggle-icon-wrap {
/* Prevents the toggle icon from overflowing out of the control while it's rotated. */
overflow: hidden;
display: flex;
align-items: center;
justify-content: center;
}
#toggleIcon {
transition: opacity 0.3s, transform 0.2s;
transform-origin: center center;
transform: rotate(0deg);
opacity: 0.5;
}
#toggleIcon[open] {
transform: rotate(180deg) !important;
opacity: 1;
}
:host(:hover) #toggleIcon {
opacity: 1;
}
#list {
pointer-events: none;
transition: opacity 0ms;
opacity: 0;
position: fixed;
z-index: 1;
height: auto;
}
#list[open] {
pointer-events: all;
transition: opacity 180ms;
opacity: 1;
border-radius: 2px;
background: #FAFAFA;
height: auto;
box-shadow: var(--shadow-2dp);
}
#itemList {
display: block;
overflow-y: auto;
}
div[role="option"] {
padding: 5px 10px;
overflow: hidden;
text-overflow: ellipsis;
}
div[role="option"]:hover {
background: #E0F7FA;
}
div[role="option"]:focus {
background: #EEEEEE;
outline: none;
}
div[role="option"][selected] {
background: #4FC3F7;
color: #FFFFFF;
}
div[role="option"]:first-of-type {
margin-top: 10px;
}
div[role="option"]:last-of-type {
margin-bottom: 10px;
}
.add-item-label {
padding: 10px;
background: #FFFFFF;
color: #616161;
}
.add-item-label:hover {
background: #039BE5;
}
.error-message {
position: absolute;
bottom: 2px;
left: 5px;
right: 0;
font-size: 10px;
color: #B71C1C;
transition: opacity 0.3s;
opacity: 0;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
pointer-events: none;
}
:host([invalid]) .error-message {
opacity: 1;
}
@media all and (min-width: 0) and (max-width: 480px) {
:host(:not([not-responsive])) #list {
top: 40px !important;
bottom: 40px !important;
left: 40px !important;
right: 40px !important;
max-width: none !important;
min-width: auto !important;
padding-bottom: 10px;
display: flex;
flex-direction: column;
}
:host(:not([not-responsive])) #itemList {
max-height: none !important;
display: flex;
}
:host(:not([not-responsive])) #filter {
font-size: 16px;
padding: 12px 10px;
}
:host(:not([not-responsive])) div[role="option"] {
padding: 10px 10px;
}
:host(:not([not-responsive])) div[role="option"]:last-of-type {
margin-bottom: 0;
}
}
`
];
}
render() {
const { label, isOpen, errorMessage, filterPlaceholder, extensible, filterable, items} = this;
return html`
<tp-media-query query="(min-width: 0) and (max-width: 480px)" @media-query-update=${this._queryUpdated}></tp-media-query>
<div class="wrap">
<div class="selector" part="selector">
<div id="selItem">${label}</div>
<div class="error-message">${errorMessage}</div>
<div class="toggle-icon-wrap">
<tp-icon id="toggleIcon" ?open="${isOpen}" .icon=${TpDropdown.selectorIcon}></tp-icon>
</div>
</div>
<div id="list" ?open="${isOpen}">
<tp-input part="filter" exportparts="wrap:filterWrap" placeholder=${filterPlaceholder} id="filter" .value=${this._filterTerm || ''} @input=${e => this._filterTerm = e.target.value} .inert=${!isOpen} ?hidden=${!(filterable || extensible)}>
<input type="text">
<tp-icon id="filterIcon" .icon=${extensible ? TpDropdown.addIcon : TpDropdown.filterIcon} slot="suffix"></tp-icon>
</tp-input>
<div id="itemList" part="list">
${items.map(item => this._filter(item) ? html`
<div part="item" role="option" .value=${item.value} tabindex=${isOpen ? '0' : '-1'}>${item.label}</div>
` : null)}
</div>
</div>
</div>
`;
}
static get properties() {
return {
items: { type: Array },
isOpen: { type: Boolean },
responsive: { type: Boolean },
value: { type: String },
default: { type: String },
label: { type: String },
errorMessage: { type: String },
filterable: { type: Boolean },
filterPlaceholder: { type: String },
// Allow to add unknown items to the list (New items aren't added to the items array by the component. Listen for the `add-item` event to do that).
extensible: { type: Boolean },
// If true, the dropdown fires the `add-item` event also on blur. Works only if `extensible` is set.
autoExtend: { type: Boolean, },
focused: { type: Boolean, reflect: true, },
readonly: { type: Boolean, reflect: true },
/*
* Stores the first known value of the `value` property that is not falsy.
* If `items` changes and no longer holds the originally selected item,
* the dropdown will clear the selection. Nevertheless `_memorizedValue`
* still holds the old value of `value`. If `items` brings back the originally
* selected entry, the old `value` will be restored with `_memorizedValue`
* and the item will be selected again.
*
* Dropdown basically restores it's selection state if the right item comes
* back again.
*/
_memorizedValue: { type: String },
_filterTerm: { type: String }
};
}
static get selectorIcon() {
return svg`<path fill="var(--tp-dropdown-selector-icon-color, #000000)" d="M7,10L12,15L17,10H7Z" />`;
}
static get filterIcon() {
return svg`
<path stroke-linejoin="round" stroke-linecap="round" stroke-width="1.5" stroke="var(--tp-dropdown-filter-icon-color)" d="M15.9996 15.2877L15.2925 15.9948L21.2958 21.9981L22.0029 21.291L15.9996 15.2877Z"></path>
<path stroke-linejoin="round" stroke-linecap="round" stroke-width="1.5" stroke="var(--tp-dropdown-filter-icon-color)" fill="none" d="M10 18C14.4183 18 18 14.4183 18 10C18 5.58172 14.4183 2 10 2C5.58172 2 2 5.58172 2 10C2 14.4183 5.58172 18 10 18Z"></path>
`;
}
static get addIcon() {
return svg`
<path stroke-linejoin="round" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" stroke="var(--tp-dropdown-add-icon-color)" d="M3 12H21"></path>
<path stroke-linejoin="round" stroke-linecap="round" stroke-miterlimit="10" stroke-width="2" stroke="var(--tp-dropdown-add-icon-color)" d="M12 3V21"></path>
`;
}
constructor() {
super();
this.items = [];
this._onDocClickHandler = () => this.close();
}
disconnectedCallback() {
super.disconnectedCallback();
if (this._boundSetListPosition) {
window.removeEventListener('resize', this._boundSetListPosition);
document.removeEventListener('scroll', this._boundSetListPosition);
}
document.removeEventListener('click', this._onDocClickHandler, true);
this.unlisten(this, 'keydown', '_onKeyDown');
this.unlisten(this.$.filter, 'keydown', '_onKeyDownFilter');
this.unlisten(this.$.filterIcon, 'click', '_filterIconClicked');
}
firstUpdated() {
super.firstUpdated();
this.listen(this, 'click', '_onClick');
}
updated(changes) {
super.updated(changes);
if (changes.has('default')) {
this._setDefault();
}
if (changes.has('focused')) {
this._focusChanged(this.focused, changes.get('focused'));
}
if (changes.has('value')) {
this._valueChanged();
this.dispatchEvent(new CustomEvent('value-changed', { detail: this.value, bubbles: true, composed: true }));
}
}
_queryUpdated(e) {
this.responsive = e.detail;
}
_focusChanged(newState, oldState) {
if (newState) {
this.listen(this, 'keydown', '_onKeyDown');
this.listen(this.$.filter, 'keydown', '_onKeyDownFilter');
this.listen(this.$.filterIcon, 'click', '_filterIconClicked');
if (this.filterable) {
this.$.filter.focus();
}
} else if (oldState) {
this.unlisten(this, 'keydown', '_onKeyDown');
this.unlisten(this.$.filter, 'keydown', '_onKeyDownFilter');
this.unlisten(this.$.filterIcon, 'click', '_filterIconClicked');
if (!newState) {
if (oldState && this.$.filter.value !== '') {
if (this.extensible && this.autoExtend) {
this._addItem();
} else if (!this._selectByLabel(this.$.filter.value)) {
if (!this.value) {
this.$.filter.value = '';
}
}
}
}
}
}
_setDefault() {
if ((this.value === null || this.value === undefined) && this._hasItem(this.default)) {
this.value = this.default;
return true;
}
return false;
}
_hasItem(value) {
if (value === undefined) return false;
return Array.isArray(this.items) && this.items.find(item => item.value.toString() === value.toString()) !== undefined;
}
_valueChanged() {
if (this._setDefault()) {
return;
}
// Show selection in selector.
const idx = this.items.findIndex(item => item.value === this.value);
if (idx > -1) {
this.label = this.items[idx].label;
}
this.invalid = false;
setTimeout(() => {
var ariaSel = this.shadowRoot.querySelector('div[aria-selected]');
var item = this.shadowRoot.querySelector('div[selected]');
if (ariaSel) {
ariaSel.removeAttribute('aria-selected');
}
if (item) {
item.setAttribute('aria-selected', true);
}
}, 0);
}
_checkValue(newValue, oldValue) {
if (newValue === null || newValue === undefined) {
this.$.itemList.selection = null;
this.label = '';
}
}
/**
* Opens the menu.
*/
open() {
if (this.readonly) {
return;
}
if (this._responsive) {
window.history.pushState({ is: 'tp-dropdown' }, null);
this.listen(window, 'popstate', 'close');
}
// If no items, we only open the list if the control is extensible.
if (this.items.length === 0) {
if (this.extensible || this.filterable) {
this.$.filter.focus();
} else {
return;
}
}
if (!this._boundSetListPosition) {
this._boundSetListPosition = this._setListPosition.bind(this);
}
// Re-calc list position if window size is changed or document is scrolled.
// This is very important for smartphones with onscreen keyboards popping up.
window.addEventListener('resize', this._boundSetListPosition);
document.addEventListener('scroll', this._boundSetListPosition, { passive: true });
document.addEventListener('click', this._onDocClickHandler, true);
this.listen(this.$.filter, 'click', '_filterClicked');
this._setListPosition();
this.isOpen = true;
this.$.selItem.focus();
}
_filterClicked(e) {
this._dontClose = true;
}
/**
* Closes the menu.
*/
close() {
if (this.isOpen) {
this._closeJob = setTimeout(() => {
this._close();
if (window.history.state && window.history.state.is === 'tp-dropdown') {
window.history.back();
}
}, 50);
}
}
_close() {
var idx = this.items.findIndex(item => item.value === this.value);
if (idx === -1) {
this.label = '';
} else {
this.label = this.items[idx].label;
}
this.isOpen = false;
window.removeEventListener('resize', this._boundSetListPosition);
document.removeEventListener('scroll', this._boundSetListPosition);
document.removeEventListener('click', this._onDocClickHandler, true);
this.unlisten(this.$.filter, 'click', '_filterClicked');
this._filterTerm = '';
}
/**
* Toggles the menu.
*/
toggle() {
if (this.isOpen) {
this._close();
} else {
this.open();
}
}
_setListPosition() {
var rect = this.getBoundingClientRect();
var filterHeight = this.filterable ? this.$.filter.getBoundingClientRect().height : 0;
var winHeight = window.innerHeight;
var spaceBottom = winHeight - rect.top - rect.height - filterHeight;
this.$.itemList.style.maxHeight = (spaceBottom - 20) + 'px';
this.$.list.style.maxWidth = rect.width + 'px';
this.$.list.style.minWidth = rect.width + 'px';
var useTopLayout = spaceBottom < 150;
if (useTopLayout) {
this.$.itemList.style.maxHeight = (rect.top - 20) + 'px';
}
this._posFixed(this, this.$.list, {
spacing: 0,
valign: useTopLayout ? 'top' : 'bottom',
halign: 'left'
});
// Make list only take as much height as possible in responsive mode.
setTimeout(() => {
var lastItem = this.$.itemList.querySelector('div[role="option"]:last-of-type');
if (lastItem) {
this.$.list.style.maxHeight = lastItem.getBoundingClientRect().top + 'px';
}
});
}
/**
* Validate the control.
*
* @return {Boolean} False if invalid, else true.
*/
validate() {
if (!isDefined(this.value) && this.required) {
this.invalid = true;
return false;
}
this.invalid = false;
return true;
}
/**
* Reset the control if a parent era-form is reset.
*/
reset() {
this.invalid = false;
this._memorizedValue = undefined;
this._filterTerm = '';
if (this.default !== undefined) {
this.value = this.default;
} else {
this.value = undefined;
}
}
_itemsChanged() {
// In case `items` was set to null or undefined.
if (!this.items) {
this.items = [];
this.value = null;
return;
}
const memValueDefined = this._memorizedValue !== null && this._memorizedValue !== undefined;
const foundValue = this.items.findIndex(item => item.value === this.value) > -1;
const foundMemVal = memValueDefined ? this.items.findIndex(item => item.value === this._memorizedValue) > -1 : false;
if (!foundValue && foundMemVal) {
this.value = this._memorizedValue;
}
if (!memValueDefined) {
this._memorizedValue = this.value;
}
if (!foundValue && !foundMemVal) {
this.value = null;
}
this._setDefault();
// Reset filter.
this._filterTerm = '';
}
_filter(item) {
if (!this._filterTerm) {
return true;
}
return new RegExp('.*' + this._filterTerm.toLowerCase() + '.*').test(item.label.toLowerCase());
}
_filterIconClicked() {
if (this.extensible) {
this._addItem();
}
this._filterTerm = '';
this.$.filter.focus();
}
_onClick(e) {
if (this._dontClose) {
setTimeout(() => {
clearTimeout(this._closeJob);
}, 20);
this._dontClose = false;
return;
}
e.preventDefault();
const itemEl = closest(e.composedPath()[0], 'div[role="option"]');
if (itemEl === undefined) {
// We didn't click a item, so cancel the global close trigger.
setTimeout(() => {
clearTimeout(this._closeJob);
}, 20);
} else {
this.value = itemEl.value;
}
var rootTarget = e.composedPath()[0];
// Toggle list only if it's not open or when the toggle icon is clicked or the click wasn't on the selector input.
if (!this.isOpen || closest(rootTarget, '#toggleIcon', true) !== undefined || (!closest(rootTarget, '#filter', true))) {
this.toggle();
this._setListFocus();
}
}
_onKeyDown(e) {
if (this.readonly) {
return;
}
if (this._isEsc(e)) {
if (this.isOpen) {
e.preventDefault();
this.close();
this.focus();
}
return;
}
if (this._isEnter(e)) {
if (this.isOpen) {
if (this.extensible && !this.$.itemList.querySelector('div[role="option"]:focus')) {
this._addItem();
}
this._selectItem();
}
this.toggle();
if (this.isOpen && this.filterable) {
this.$.filter.focus();
}
}
if (this.isOpen) {
if (this._isDownKey(e)) {
this._focusNextItem();
e.preventDefault();
}
if (this._isUpKey(e)) {
this._focusPrevItem();
e.preventDefault();
}
} else {
if (this._isDownKey(e)) {
if (this.value === undefined && this.items && this.items.length > 0) {
this.$.itemList.select(0);
} else {
this.$.itemList.selectNext();
}
e.preventDefault();
}
if (this._isUpKey(e)) {
if (this.value === undefined && this.items && this.items.length > 0) {
this.$.itemList.select(this.items.length - 1);
} else {
this.$.itemList.selectPrevious();
}
e.preventDefault();
}
}
}
_isUpKey(e) {
return e.keyCode === 38;
}
_isDownKey(e) {
return e.keyCode === 40;
}
_isEsc(e) {
return e.keyCode === 27;
}
_isEnter(e) {
return e.keyCode === 13;
}
_onKeyDownFilter(e) {
if (this._isEsc(e)) { //esc
if (this._filterTerm) {
e.stopPropagation();
}
this._filterTerm = '';
}
if (this._isUpKey(e) || this._isDownKey(e)) {
this._setListFocus();
e.preventDefault();
e.stopPropagation();
}
}
// Add a new item to the list if the element is extensible.
_addItem() {
var label = this.$.filter.value;
if (label !== '') {
if (!this._selectByLabel(label)) {
this.fire('add-item', { label: label });
}
}
}
_selectByLabel(label) {
label = String(label).toLowerCase();
if (Array.isArray(this.items)) {
for (var i = 0, li = this.items.length; i < li; ++i) {
if (String(this.items[i].label).toLowerCase() === String(label)) {
this.value = this.items[i].id;
return true;
}
}
}
return false;
}
_selectItem() {
var item = this.$.itemList.querySelector('div[role="option"]:focus');
if (item) {
this.value = item.value;
}
}
_setListFocus() {
var item = this.$.itemList.querySelector('div[role="option"].iron-selected') || this.$.itemList.querySelector('div[role="option"]');
if (item) {
item.focus();
}
}
_focusNextItem() {
var item = this.$.itemList.querySelector('div[role="option"]:focus');
if (!item) {
return;
}
var next = item.nextElementSibling;
if (!next || next.tagName !== 'DIV') {
next = this.$.itemList.querySelector('div[role="option"]');
}
if (next) {
next.focus();
}
}
_focusPrevItem() {
var item = this.$.itemList.querySelector('div[role="option"]:focus');
if (!item) {
return;
}
var next = item.previousElementSibling;
if (!next || next.tagName !== 'DIV') {
next = this.$.itemList.querySelector('div[role="option"]:last-of-type');
}
if (next) {
next.focus();
}
}
}
window.customElements.define('tp-dropdown', TpDropdown);

View File

@ -1,35 +0,0 @@
/**
@license
Copyright (c) 2022 trading_peter
This program is available under Apache License Version 2.0
*/
import { LitElement, html, css } from 'lit';
class TpElement extends LitElement {
static get styles() {
return [
css`
:host {
display: block;
}
`
];
}
render() {
const { } = this;
return html`
`;
}
static get properties() {
return { };
}
}
window.customElements.define('tp-element', TpElement);