From c399b992e6665f194ebe08a48aae1ede32c6767f Mon Sep 17 00:00:00 2001
From: Shin'ya Ueoka <ueokande@i-beam.org>
Date: Fri, 6 Dec 2019 21:48:14 +0900
Subject: Identify the key is a digit

---
 src/shared/settings/KeySequence.ts | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

(limited to 'src/shared/settings/KeySequence.ts')

diff --git a/src/shared/settings/KeySequence.ts b/src/shared/settings/KeySequence.ts
index abae61a..de1c6bb 100644
--- a/src/shared/settings/KeySequence.ts
+++ b/src/shared/settings/KeySequence.ts
@@ -26,6 +26,21 @@ export default class KeySequence {
     return true;
   }
 
+  isDigitOnly(): boolean {
+    return this.keys.every(key => key.isDigit());
+  }
+
+  splitNumericPrefix(): [KeySequence, KeySequence] {
+    let nonDigitIndex = this.keys.findIndex(key => !key.isDigit());
+    if (nonDigitIndex === -1) {
+      return [this, new KeySequence([])];
+    }
+    return [
+      new KeySequence(this.keys.slice(0, nonDigitIndex)),
+      new KeySequence(this.keys.slice(nonDigitIndex)),
+    ];
+  }
+
   static fromMapKeys(keys: string): KeySequence {
     const fromMapKeysRecursive = (
       remaining: string, mappedKeys: Key[],
-- 
cgit v1.2.3