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<h1 class="page-title">Source: components/seDropdown.js</h1>
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<pre class="prettyprint source linenums"><code>import ListComboBox from 'elix/define/ListComboBox.js'
import { defaultState } from 'elix/src/base/internal.js'
import { templateFrom, fragmentFrom } from 'elix/src/core/htmlLiterals.js'
import { internal } from 'elix'
import NumberSpinBox from '../dialogs/se-elix/define/NumberSpinBox.js'
/**
* @class Dropdown
*/
class Dropdown extends ListComboBox {
/**
* @function get
* @returns {PlainObject}
*/
get [defaultState] () {
return Object.assign(super[defaultState], {
inputPartType: NumberSpinBox,
src: 'logo.svg',
inputsize: '100%'
})
}
/**
* @function get
* @returns {PlainObject}
*/
get [internal.template] () {
const result = super[internal.template]
const source = result.content.getElementById('source')
// add a icon before our dropdown
source.prepend(fragmentFrom.html`
<img src="dropdown.svg" alt="icon" width="18" height="18"></img>
`.cloneNode(true))
// change the style so it fits in our toolbar
result.content.append(
templateFrom.html`
<style>
[part~="source"] {
grid-template-columns: 20px 1fr auto;
}
::slotted(*) {
padding: 4px;
background: #E8E8E8;
border: 1px solid #5a6162;
width: 100%;
}
[part~="popup"] {
width: 150%;
}
</style>
`.content
)
return result
}
/**
* @function observedAttributes
* @returns {any} observed
*/
static get observedAttributes () {
return ['title', 'src', 'inputsize', 'value']
}
/**
* @function attributeChangedCallback
* @param {string} name
* @param {string} oldValue
* @param {string} newValue
* @returns {void}
*/
attributeChangedCallback (name, oldValue, newValue) {
if (oldValue === newValue) return
switch (name) {
case 'title':
// this.$span.setAttribute('title', `${newValue} ${shortcut ? `[${shortcut}]` : ''}`);
break
case 'src':
this.src = newValue
break
case 'inputsize':
this.inputsize = newValue
break
default:
super.attributeChangedCallback(name, oldValue, newValue)
break
}
}
/**
* @function [internal.render]
* @param {PlainObject} changed
* @returns {void}
*/
[internal.render] (changed) {
super[internal.render](changed)
if (this[internal.firstRender]) {
this.$img = this.shadowRoot.querySelector('img')
this.$input = this.shadowRoot.getElementById('input')
}
if (changed.src) {
this.$img.setAttribute('src', this[internal.state].src)
}
if (changed.inputsize) {
this.$input.shadowRoot.querySelector('[part~="input"]').style.width = this[internal.state].inputsize
}
if (changed.inputPartType) {
// Wire up handler on new input.
this.addEventListener('close', (e) => {
e.preventDefault()
const value = e.detail?.closeResult?.getAttribute('value')
if (value) {
const closeEvent = new CustomEvent('change', { detail: { value } })
this.dispatchEvent(closeEvent)
}
})
}
}
/**
* @function src
* @returns {string} src
*/
get src () {
return this[internal.state].src
}
/**
* @function src
* @returns {void}
*/
set src (src) {
this[internal.setState]({ src })
}
/**
* @function inputsize
* @returns {string} src
*/
get inputsize () {
return this[internal.state].inputsize
}
/**
* @function src
* @returns {void}
*/
set inputsize (inputsize) {
this[internal.setState]({ inputsize })
}
/**
* @function value
* @returns {string} src
*/
get value () {
return this[internal.state].value
}
/**
* @function value
* @returns {void}
*/
set value (value) {
this[internal.setState]({ value })
}
}
// Register
customElements.define('se-dropdown', Dropdown)
/*
{TODO
min: 0.001, max: 10000, step: 50, stepfunc: stepZoom,
function stepZoom (elem, step) {
const origVal = Number(elem.value);
if (origVal === 0) { return 100; }
const sugVal = origVal + step;
if (step === 0) { return origVal; }
if (origVal >= 100) {
return sugVal;
}
if (sugVal >= origVal) {
return origVal * 2;
}
return origVal / 2;
}
*/
</code></pre>
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