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95 lines
2.4 KiB
JavaScript

export class Dialog extends HTMLElement {
constructor() {
super()
this.attachShadow({mode: 'open'})
this.headerEl = document.createElement('div')
this.headerEl.classList.add('header')
this.bodyEl = document.createElement('div')
this.bodyEl.classList.add('body')
this.footerEl = document.createElement('div')
this.footerEl.classList.add('footer')
this.dialogEl = document.createElement('dialog')
this.dialogEl.replaceChildren(
this.headerEl, this.bodyEl, this.footerEl
)
this.dialogEl.addEventListener('click', e => {
if (
e.target === this.dialogEl &&
!this.clickedInside(e, this.dialogEl)
) {
this.close()
}
})
this.shadowRoot.appendChild(this.dialogEl)
}
connectedCallback() {
const style = document.createElement('style')
style.textContent = `
dialog {
margin-top: var(--dialog-margin-top, 120px);
min-width: 200px;
border: 1px solid rgba(0, 0, 0, 0.3);
border-radius: 6px;
box-shadow: 0 3px 7px rgba(0, 0, 0, 0.3);
}
dialog::backdrop {
opacity: 0;
transition: opacity 0.3s ease-in;
background-color: rgba(0, 0, 0, .25);
}
dialog.opened::backdrop {
opacity: 1;
}
dialog.closing {
visibility: hidden;
}
dialog.closing::backdrop {
visibility: visible;
}
.header, .footer, .body {
display: flex;
align-items: stretch;
flex-direction: column;
}
`
this.shadowRoot.append(style)
this.headerEl.setAttribute('part', 'header')
this.bodyEl.setAttribute('part', 'body')
this.footerEl.setAttribute('part', 'footer')
}
open() {
this.dialogEl.showModal()
this.dialogEl.classList.add('opened')
}
close() {
this.dialogEl.classList.remove('opened')
this.dialogEl.classList.add('closing')
setTimeout(() => {
this.dialogEl.close()
this.dialogEl.classList.remove('closing')
}, 350)
}
clickedInside(e, el) {
const rect = el.getBoundingClientRect()
return (
rect.top <= e.clientY &&
e.clientY <= rect.top + rect.height &&
rect.left <= e.clientX &&
e.clientX <= rect.left + rect.width
)
}
set top(v) {
this.shadowRoot.host.style.setProperty(
'--dialog-margin-top', `${v}px`
)
}
get top() {
return style.getProperty('--margin-top')
}
}