mirror of
https://github.com/NoRedInk/noredink-ui.git
synced 2024-12-24 22:21:45 +03:00
58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
CustomElement = require('../CustomElement')
|
|
|
|
CustomElement.create({
|
|
tagName: 'nri-textarea-v3',
|
|
|
|
initialize: function() {
|
|
this._autoresize = false
|
|
},
|
|
|
|
onConnect: function() {
|
|
this._textarea = this.querySelector('textarea')
|
|
this._updateListener()
|
|
},
|
|
|
|
observedAttributes: ['data-autoresize'],
|
|
|
|
onAttributeChange: function(name, previous, next) {
|
|
if (name === 'data-autoresize') {
|
|
this._autoresize = next !== null
|
|
if (!this._textarea) return
|
|
this._updateListener()
|
|
}
|
|
},
|
|
|
|
methods: {
|
|
_updateListener: function() {
|
|
if (this._autoresize) {
|
|
this._textarea.addEventListener('input', this._resize)
|
|
this._resize()
|
|
} else {
|
|
this._textarea.removeEventListener('input', this._resize)
|
|
}
|
|
},
|
|
|
|
_resize: function() {
|
|
var minHeight = null
|
|
if (this._textarea.style.minHeight) {
|
|
minHeight = parseInt(this._textarea.style.minHeight, 10)
|
|
} else {
|
|
minHeight = parseInt(window.getComputedStyle(this._textarea).minHeight, 10)
|
|
}
|
|
if (minHeight === 0) {
|
|
minHeight = parseInt(window.getComputedStyle(this._textarea).height, 10)
|
|
}
|
|
|
|
this._textarea.style.overflowY = 'hidden'
|
|
this._textarea.style.minHeight = minHeight + 'px'
|
|
this._textarea.style.transition = 'none'
|
|
if (this._textarea.scrollHeight > minHeight) {
|
|
this._textarea.style.height = minHeight + 'px'
|
|
this._textarea.style.height = this._textarea.scrollHeight + 'px'
|
|
} else {
|
|
this._textarea.style.height = minHeight + 'px'
|
|
}
|
|
}
|
|
}
|
|
})
|