iceshrimp-legacy/packages/client/src/components/form/select.vue

<template>
	<div class="vblkjoeq">
		<label>
			<div class="label"><slot name="label"></slot></div>
			<div
				ref="container"
				class="input"
				:class="{ inline, disabled, focused }"
				@click.prevent="onClick"
				tabindex="-1"
			>
				<div ref="prefixEl" class="prefix"><slot name="prefix"></slot></div>
				<select
					ref="inputEl"
					v-model="v"
					v-adaptive-border
					class="select"
					:disabled="disabled"
					:required="required"
					:readonly="readonly"
					:placeholder="placeholder"
					@focus="focused = true"
					@blur="focused = false"
					@input="onInput"
				>
					<slot></slot>
				</select>
				<div ref="suffixEl" class="suffix">
					<i class="ph-caret-down ph-bold ph-lg"></i>
				</div>
			</div>
			<div class="caption"><slot name="caption"></slot></div>
		</label>

		<MkButton v-if="manualSave && changed" primary @click="updated"
			><i class="ph-floppy-disk-back ph-bold ph-lg"></i>
			{{ i18n.ts.save }}</MkButton
		>
	</div>
</template>

<script lang="ts" setup>
import {
	onMounted,
	onUnmounted,
	nextTick,
	ref,
	watch,
	computed,
	toRefs,
	VNode,
	useSlots,
} from "vue";
import MkButton from "@/components/MkButton.vue";
import * as os from "@/os";
import { useInterval } from "@/scripts/use-interval";
import { i18n } from "@/i18n";

const props = defineProps<{
	modelValue: string;
	required?: boolean;
	readonly?: boolean;
	disabled?: boolean;
	placeholder?: string;
	autofocus?: boolean;
	inline?: boolean;
	manualSave?: boolean;
	small?: boolean;
	large?: boolean;
}>();

const emit = defineEmits<{
	(ev: "change", _ev: KeyboardEvent): void;
	(ev: "update:modelValue", value: string): void;
}>();

const slots = useSlots();

const { modelValue, autofocus } = toRefs(props);
const v = ref(modelValue.value);
const focused = ref(false);
const changed = ref(false);
const invalid = ref(false);
const filled = computed(() => v.value !== "" && v.value != null);
const inputEl = ref(null);
const prefixEl = ref(null);
const suffixEl = ref(null);
const container = ref(null);
const height = props.small ? 36 : props.large ? 40 : 38;

const focus = () => inputEl.value.focus();
const onInput = (ev) => {
	changed.value = true;
	emit("change", ev);
};

const updated = () => {
	changed.value = false;
	emit("update:modelValue", v.value);
};

watch(modelValue, (newValue) => {
	v.value = newValue;
});

watch(v, (newValue) => {
	if (!props.manualSave) {
		updated();
	}

	invalid.value = inputEl.value.validity.badInput;
});

// このコンポーネントが作成された時、非表示状態である場合がある
// 非表示状態だと要素の幅などは0になってしまうので、定期的に計算する
useInterval(
	() => {
		if (prefixEl.value) {
			if (prefixEl.value.offsetWidth) {
				inputEl.value.style.paddingLeft =
					prefixEl.value.offsetWidth + "px";
			}
		}
		if (suffixEl.value) {
			if (suffixEl.value.offsetWidth) {
				inputEl.value.style.paddingRight =
					suffixEl.value.offsetWidth + "px";
			}
		}
	},
	100,
	{
		immediate: true,
		afterMounted: true,
	}
);

onMounted(() => {
	nextTick(() => {
		if (autofocus.value) {
			focus();
		}
	});
});

const onClick = (ev: MouseEvent) => {
	focused.value = true;

	const menu = [];
	let options = slots.default!();

	const pushOption = (option: VNode) => {
		menu.push({
			text: option.children,
			active: v.value === option.props.value,
			action: () => {
				v.value = option.props.value;
			},
		});
	};

	const scanOptions = (options: VNode[]) => {
		for (const vnode of options) {
			if (vnode.type === "optgroup") {
				const optgroup = vnode;
				menu.push({
					type: "label",
					text: optgroup.props.label,
				});
				scanOptions(optgroup.children);
			} else if (Array.isArray(vnode.children)) {
				// 何故かフラグメントになってくることがある
				const fragment = vnode;
				scanOptions(fragment.children);
			} else if (vnode.props == null) {
				// v-if で条件が false のときにこうなる
				// nop?
			} else {
				const option = vnode;
				pushOption(option);
			}
		}
	};

	scanOptions(options);

	os.popupMenu(menu, container.value, {
		width: container.value.offsetWidth,
	}).then(() => {
		focused.value = false;
	});
};
</script>

<style lang="scss" scoped>
.vblkjoeq {
	> label {
		> .label {
			font-size: 0.85em;
			padding: 0 0 8px 0;
			user-select: none;
	
			&:empty {
				display: none;
			}
		}
	
		> .caption {
			font-size: 0.85em;
			padding: 8px 0 0 0;
			color: var(--fgTransparentWeak);
	
			&:empty {
				display: none;
			}
		}
	
		> .input {
			position: relative;
			cursor: pointer;
			margin-left: 0.2rem;
			margin-right: 0.2rem;
	
			&:hover {
				> .select {
					border-color: var(--inputBorderHover) !important;
				}
			}
	
			> .select {
				appearance: none;
				-webkit-appearance: none;
				display: block;
				height: v-bind("height + 'px'");
				width: 100%;
				margin: 0;
				padding: 0 12px;
				font: inherit;
				font-weight: normal;
				font-size: 1em;
				color: var(--fg);
				background: var(--panel);
				border: solid 1px var(--panel);
				border-radius: 6px;
				outline: none;
				box-shadow: none;
				box-sizing: border-box;
				cursor: pointer;
				transition: border-color 0.1s ease-out;
				pointer-events: none;
				user-select: none;
			}
	
			> .prefix,
			> .suffix {
				display: flex;
				align-items: center;
				position: absolute;
				z-index: 1;
				top: 0;
				padding: 0 12px;
				font-size: 1em;
				height: v-bind("height + 'px'");
				pointer-events: none;
	
				&:empty {
					display: none;
				}
	
				> * {
					display: inline-block;
					min-width: 16px;
					max-width: 150px;
					overflow: hidden;
					white-space: nowrap;
					text-overflow: ellipsis;
				}
			}
	
			> .prefix {
				left: 0;
				padding-right: 6px;
			}
	
			> .suffix {
				right: 0;
				padding-left: 6px;
			}
	
			&.inline {
				display: inline-block;
				margin: 0;
			}
	
			&.focused {
				> select {
					border-color: var(--accent) !important;
				}
			}
	
			&.disabled {
				opacity: 0.7;
	
				&,
				* {
					cursor: not-allowed !important;
				}
			}
		}
	}
}
</style>