From 10b9c09192566c9f62cf3e22bd5623885171f10a Mon Sep 17 00:00:00 2001
From: MaysWind <i@mayswind.net>
Date: Sun, 23 Nov 2025 01:44:40 +0800
Subject: [PATCH] insert the pasted content after the cursor when pasting
 numbers or amounts

---
 src/components/base/CommonNumberInputBase.ts | 34 ++++++++++++++++++--
 1 file changed, 31 insertions(+), 3 deletions(-)

diff --git a/src/components/base/CommonNumberInputBase.ts b/src/components/base/CommonNumberInputBase.ts
index 7e24c431..e40fec8b 100644
--- a/src/components/base/CommonNumberInputBase.ts
+++ b/src/components/base/CommonNumberInputBase.ts
@@ -160,12 +160,40 @@ export function useCommonNumberInputBase(props: CommonNumberInputProps, maxDecim
             return;
         }
 
-        const value = parseNumber(text);
+        const parsedText = parseNumber(text);
+
+        if (Number.isNaN(parsedText) || !Number.isFinite(parsedText)) {
+            e.preventDefault();
+            return;
+        }
+
+        const inputEl = e.target as HTMLInputElement;
+        const start = inputEl.selectionStart ?? 0;
+        const end = inputEl.selectionEnd ?? 0;
+        const fullText = currentValue.value.slice(0, start) + text + currentValue.value.slice(end);
+
+        const value = parseNumber(fullText);
         const textualValue = formatNumber(value);
         const decimalSeparator = getCurrentDecimalSeparator();
-        const hasDecimalSeparator = text.indexOf(decimalSeparator) >= 0;
+        const hasDecimalSeparator = fullText.indexOf(decimalSeparator) >= 0;
+        const pastedAmount = getValidFormattedValue(value, textualValue, hasDecimalSeparator);
+        let newPos: number = start + text.length;
 
-        currentValue.value = getValidFormattedValue(value, textualValue, hasDecimalSeparator);
+        if (pastedAmount.length !== fullText.length) {
+            if (newPos > pastedAmount.length) {
+                newPos = pastedAmount.length;
+            } else {
+                newPos = start;
+            }
+        }
+
+        if (window.requestAnimationFrame) {
+            window.requestAnimationFrame(() => {
+                inputEl.selectionStart = inputEl.selectionEnd = newPos;
+            });
+        }
+
+        currentValue.value = pastedAmount;
         e.preventDefault();
     }