From 7be4b2145b5eb5db02400ba66366aa682111ffaa Mon Sep 17 00:00:00 2001
From: syuilo <Syuilotan@yahoo.co.jp>
Date: Sat, 25 Jun 2022 18:05:35 +0900
Subject: [PATCH] refactor(client): extract tooltip logic of chart

---
 packages/client/src/components/chart.vue      | 43 +---------------
 .../client/src/scripts/use-chart-tooltip.ts   | 50 +++++++++++++++++++
 2 files changed, 52 insertions(+), 41 deletions(-)
 create mode 100644 packages/client/src/scripts/use-chart-tooltip.ts

diff --git a/packages/client/src/components/chart.vue b/packages/client/src/components/chart.vue
index 5e9c2f03b..d9075dd07 100644
--- a/packages/client/src/components/chart.vue
+++ b/packages/client/src/components/chart.vue
@@ -39,7 +39,7 @@ import zoomPlugin from 'chartjs-plugin-zoom';
 //import gradient from 'chartjs-plugin-gradient';
 import * as os from '@/os';
 import { defaultStore } from '@/store';
-import MkChartTooltip from '@/components/chart-tooltip.vue';
+import { useChartTooltip } from '@/scripts/use-chart-tooltip';
 
 const props = defineProps({
 	src: {
@@ -160,42 +160,7 @@ const format = (arr) => {
 	}));
 };
 
-const tooltipShowing = ref(false);
-const tooltipX = ref(0);
-const tooltipY = ref(0);
-const tooltipTitle = ref(null);
-const tooltipSeries = ref(null);
-let disposeTooltipComponent;
-
-os.popup(MkChartTooltip, {
-	showing: tooltipShowing,
-	x: tooltipX,
-	y: tooltipY,
-	title: tooltipTitle,
-	series: tooltipSeries,
-}, {}).then(({ dispose }) => {
-	disposeTooltipComponent = dispose;
-});
-
-function externalTooltipHandler(context) {
-	if (context.tooltip.opacity === 0) {
-		tooltipShowing.value = false;
-		return;
-	}
-
-	tooltipTitle.value = context.tooltip.title[0];
-	tooltipSeries.value = context.tooltip.body.map((b, i) => ({
-		backgroundColor: context.tooltip.labelColors[i].backgroundColor,
-		borderColor: context.tooltip.labelColors[i].borderColor,
-		text: b.lines[0],
-	}));
-
-	const rect = context.chart.canvas.getBoundingClientRect();
-
-	tooltipShowing.value = true;
-	tooltipX.value = rect.left + window.pageXOffset + context.tooltip.caretX;
-	tooltipY.value = rect.top + window.pageYOffset + context.tooltip.caretY;
-}
+const { handler: externalTooltipHandler } = useChartTooltip();
 
 const render = () => {
 	if (chartInstance) {
@@ -891,10 +856,6 @@ watch(() => [props.src, props.span], fetchAndRender);
 onMounted(() => {
 	fetchAndRender();
 });
-
-onUnmounted(() => {
-	if (disposeTooltipComponent) disposeTooltipComponent();
-});
 /* eslint-enable id-denylist */
 </script>
 
diff --git a/packages/client/src/scripts/use-chart-tooltip.ts b/packages/client/src/scripts/use-chart-tooltip.ts
new file mode 100644
index 000000000..ab5716569
--- /dev/null
+++ b/packages/client/src/scripts/use-chart-tooltip.ts
@@ -0,0 +1,50 @@
+import { onUnmounted, ref } from 'vue';
+import * as os from '@/os';
+import MkChartTooltip from '@/components/chart-tooltip.vue';
+
+export function useChartTooltip() {
+	const tooltipShowing = ref(false);
+	const tooltipX = ref(0);
+	const tooltipY = ref(0);
+	const tooltipTitle = ref(null);
+	const tooltipSeries = ref(null);
+	let disposeTooltipComponent;
+
+	os.popup(MkChartTooltip, {
+		showing: tooltipShowing,
+		x: tooltipX,
+		y: tooltipY,
+		title: tooltipTitle,
+		series: tooltipSeries,
+	}, {}).then(({ dispose }) => {
+		disposeTooltipComponent = dispose;
+	});
+
+	onUnmounted(() => {
+		if (disposeTooltipComponent) disposeTooltipComponent();
+	});
+
+	function handler(context) {
+		if (context.tooltip.opacity === 0) {
+			tooltipShowing.value = false;
+			return;
+		}
+
+		tooltipTitle.value = context.tooltip.title[0];
+		tooltipSeries.value = context.tooltip.body.map((b, i) => ({
+			backgroundColor: context.tooltip.labelColors[i].backgroundColor,
+			borderColor: context.tooltip.labelColors[i].borderColor,
+			text: b.lines[0],
+		}));
+
+		const rect = context.chart.canvas.getBoundingClientRect();
+
+		tooltipShowing.value = true;
+		tooltipX.value = rect.left + window.pageXOffset + context.tooltip.caretX;
+		tooltipY.value = rect.top + window.pageYOffset + context.tooltip.caretY;
+	}
+
+	return {
+		handler,
+	};
+}