refactor(client): Refactor MkPageHeader #9869 (#9878)

* disable animation

* refactor(client): MkPageHeaderのタブをMkPageHeader.tabsに分離
animationをフォローするように

* update CHANGELOG.md

* remove unnecessary props

packages/frontend/src/components/global/MkPageHeader.tabs.vue

@@ -0,0 +1,218 @@
+<template>
+	<div ref="el" :class="$style.tabs" @wheel="onTabWheel">
+		<div :class="$style.tabsInner">
+			<button v-for="t in tabs" :ref="(el) => tabRefs[t.key] = (el as HTMLElement)" v-tooltip.noDelay="t.title"
+				class="_button" :class="[$style.tab, { [$style.active]: t.key != null && t.key === props.tab, [$style.animate]: defaultStore.reactiveState.animation.value }]"
+				@mousedown="(ev) => onTabMousedown(t, ev)" @click="(ev) => onTabClick(t, ev)">
+				<div :class="$style.tabInner">
+					<i v-if="t.icon" :class="[$style.tabIcon, t.icon]"></i>
+					<div v-if="!t.iconOnly || (!defaultStore.reactiveState.animation.value && t.key === tab)"
+						:class="$style.tabTitle">{{ t.title }}</div>
+					<Transition v-else @enter="enter" @after-enter="afterEnter" @leave="leave" @after-leave="afterLeave"
+						mode="in-out">
+						<div v-if="t.key === tab" :class="$style.tabTitle">{{ t.title }}</div>
+					</Transition>
+				</div>
+			</button>
+		</div>
+		<div ref="tabHighlightEl"
+			:class="[$style.tabHighlight, { [$style.animate]: defaultStore.reactiveState.animation.value }]"></div>
+	</div>
+</template>
+
+<script lang="ts">
+export type Tab = {
+	key: string;
+	title: string;
+	icon?: string;
+	iconOnly?: boolean;
+	onClick?: (ev: MouseEvent) => void;
+} & {
+	iconOnly: true;
+	iccn: string;
+};
+</script>
+
+<script lang="ts" setup>
+import { onMounted, onUnmounted, watch, nextTick } from 'vue';
+import { defaultStore } from '@/store';
+
+const props = withDefaults(defineProps<{
+	tabs?: Tab[];
+	tab?: string;
+	rootEl?: HTMLElement;
+}>(), {
+	tabs: () => ([] as Tab[]),
+});
+
+const emit = defineEmits<{
+	(ev: 'update:tab', key: string);
+	(ev: 'tabClick', key: string);
+}>();
+
+let el = $shallowRef<HTMLElement | null>(null);
+const tabRefs: Record<string, HTMLElement | null> = {};
+let tabHighlightEl = $shallowRef<HTMLElement | null>(null);
+
+function onTabMousedown(tab: Tab, ev: MouseEvent): void {
+	// ユーザビリティの観点からmousedown時にはonClickは呼ばない
+	if (tab.key) {
+		emit('update:tab', tab.key);
+	}
+}
+
+function onTabClick(t: Tab, ev: MouseEvent): void {
+	emit('tabClick', t.key);
+
+	if (t.onClick) {
+		ev.preventDefault();
+		ev.stopPropagation();
+		t.onClick(ev);
+	}
+
+	if (t.key) {
+		emit('update:tab', t.key);
+	}
+}
+
+function renderTab() {
+	const tabEl = props.tab ? tabRefs[props.tab] : undefined;
+	if (tabEl && tabHighlightEl && tabHighlightEl.parentElement) {
+		// offsetWidth や offsetLeft は少数を丸めてしまうため getBoundingClientRect を使う必要がある
+		// https://developer.mozilla.org/ja/docs/Web/API/HTMLElement/offsetWidth#%E5%80%A4
+		const parentRect = tabHighlightEl.parentElement.getBoundingClientRect();
+		const rect = tabEl.getBoundingClientRect();
+		tabHighlightEl.style.width = rect.width + 'px';
+		tabHighlightEl.style.left = (rect.left - parentRect.left + tabHighlightEl.parentElement.scrollLeft) + 'px';
+	}
+}
+
+function onTabWheel(ev: WheelEvent) {
+	if (ev.deltaY !== 0 && ev.deltaX === 0) {
+		ev.preventDefault();
+		ev.stopPropagation();
+		(ev.currentTarget as HTMLElement).scrollBy({
+			left: ev.deltaY,
+			behavior: 'smooth',
+		});
+	}
+	return false;
+}
+
+function enter(el: HTMLElement) {
+	const elementWidth = el.getBoundingClientRect().width;
+	el.style.width = '0';
+	el.offsetWidth; // reflow
+	el.style.width = elementWidth + 'px';
+	setTimeout(renderTab, 70);
+}
+function afterEnter(el: HTMLElement) {
+	el.style.width = '';
+	nextTick(renderTab);
+}
+function leave(el: HTMLElement) {
+	const elementWidth = el.getBoundingClientRect().width;
+	el.style.width = elementWidth + 'px';
+	el.offsetWidth; // reflow
+	el.style.width = '0';
+}
+function afterLeave(el: HTMLElement) {
+	el.style.width = '';
+}
+
+let ro2: ResizeObserver | null;
+
+onMounted(() => {
+	watch([() => props.tab, () => props.tabs], () => {
+		nextTick(() => renderTab());
+	}, {
+		immediate: true,
+	});
+
+	if (props.rootEl) {
+		ro2 = new ResizeObserver((entries, observer) => {
+			if (document.body.contains(el as HTMLElement)) {
+				nextTick(() => renderTab());
+			}
+		});
+		ro2.observe(props.rootEl);
+	}
+});
+
+onUnmounted(() => {
+	if (ro2) ro2.disconnect();
+});
+</script>
+
+<style lang="scss" module>
+.tabs {
+	display: block;
+	position: relative;
+	margin: 0;
+	height: var(--height);
+	font-size: 0.8em;
+	text-align: center;
+	overflow-x: auto;
+	overflow-y: hidden;
+	scrollbar-width: none;
+
+	&::-webkit-scrollbar {
+		display: none;
+	}
+}
+
+.tabsInner {
+	display: inline-block;
+	height: var(--height);
+	white-space: nowrap;
+}
+
+.tab {
+	display: inline-block;
+	position: relative;
+	padding: 0 10px;
+	height: 100%;
+	font-weight: normal;
+	opacity: 0.7;
+
+	&:hover {
+		opacity: 1;
+	}
+
+	&.active {
+		opacity: 1;
+	}
+
+	&.animate {
+		transition: opacity 0.2s ease;
+	}
+}
+
+.tabInner {
+	display: flex;
+	align-items: center;
+}
+
+.tabIcon+.tabTitle {
+	margin-left: 8px;
+}
+
+.tabTitle {
+	overflow: hidden;
+	transition: width 0.15s ease-in-out;
+}
+
+.tabHighlight {
+	position: absolute;
+	bottom: 0;
+	height: 3px;
+	background: var(--accent);
+	border-radius: 999px;
+	transition: none;
+	pointer-events: none;
+
+	&.animate {
+		transition: width 0.15s ease, left 0.15s ease;
+	}
+}
+</style>