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165
src/components/forms/Textarea.vue
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165
src/components/forms/Textarea.vue
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<template>
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<div :class="wrapperClass">
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<textarea
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:id="name"
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ref="textarea"
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:value="modelValue"
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:name="name"
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:rows="rows"
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:required="required"
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:disabled="disabled"
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:placeholder="placeholder"
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:autocomplete="autocomplete"
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:class="[baseClass, customClass, sizeClass, paddingClass, appearanceClass, resizeClass]"
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@input="onInput($event.target.value)"
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@focus="$emit('focus', $event)"
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@blur="$emit('blur', $event)"
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/>
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</div>
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</template>
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<script>
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export default {
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props: {
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modelValue: {
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type: [String, Number],
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default: ''
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},
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name: {
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type: String,
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required: true
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},
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placeholder: {
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type: String,
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default: null
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},
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required: {
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type: Boolean,
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default: false
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},
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disabled: {
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type: Boolean,
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default: false
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},
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rows: {
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type: Number,
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default: 3
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},
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autoresize: {
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type: Boolean,
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default: false
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},
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autofocus: {
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type: Boolean,
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default: false
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},
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autocomplete: {
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type: String,
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default: null
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},
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appearance: {
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type: String,
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default: 'default',
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validator (value) {
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return ['default', 'none'].includes(value)
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}
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},
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resize: {
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type: Boolean,
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default: true
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},
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size: {
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type: String,
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default: 'md',
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validator (value) {
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return ['', 'xxs', 'xs', 'sm', 'md', 'lg', 'xl'].includes(value)
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}
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},
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wrapperClass: {
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type: String,
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default: 'relative'
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},
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baseClass: {
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type: String,
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default: 'block w-full bg-tw-white text-tw-gray-700 disabled:cursor-not-allowed disabled:bg-tw-gray-50 focus:outline-none'
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},
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customClass: {
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type: String,
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default: null
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}
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},
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emits: ['update:modelValue', 'focus', 'blur'],
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setup (props, { emit }) {
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const textarea = ref(null)
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const autoFocus = () => {
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if (props.autofocus) {
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textarea.value.focus()
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}
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}
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const autoResize = () => {
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if (props.autoresize) {
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const styles = window.getComputedStyle(textarea.value)
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const paddingTop = parseInt(styles.paddingTop)
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const paddingBottom = parseInt(styles.paddingBottom)
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const padding = paddingTop + paddingBottom
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const initialHeight = (parseInt(styles.height) - padding) / textarea.value.rows
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const scrollHeight = textarea.value.scrollHeight - padding
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const newRows = Math.ceil(scrollHeight / initialHeight)
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textarea.value.rows = newRows
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}
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}
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const onInput = (value) => {
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autoResize()
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emit('update:modelValue', value)
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}
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onMounted(() => {
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setTimeout(() => {
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autoFocus()
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autoResize()
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}, 100)
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})
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const sizeClass = computed(() => ({
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xxs: 'text-xs',
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xs: 'text-xs',
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sm: 'text-sm leading-4',
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md: 'text-sm',
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lg: 'text-base',
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xl: 'text-base'
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})[props.size])
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const paddingClass = computed(() => ({
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xxs: 'px-1 py-0.5',
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xs: 'px-2.5 py-1.5',
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sm: 'px-3 py-2',
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md: 'px-4 py-2',
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lg: 'px-4 py-2',
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xl: 'px-6 py-3'
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})[props.size])
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const appearanceClass = computed(() => ({
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default: 'focus:ring-1 focus:ring-primary-500 focus:border-primary-500 border border-tw-gray-300 rounded-md shadow-sm',
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none: 'border-0 bg-transparent focus:ring-0 focus:shadow-none'
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})[props.appearance])
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const resizeClass = computed(() => {
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return props.resize ? '' : 'resize-none'
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})
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return {
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textarea,
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onInput,
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sizeClass,
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paddingClass,
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appearanceClass,
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resizeClass
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}
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}
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}
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</script>
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