From 4716c5d2def9c23e413c8df5d3eeb3c531f63471 Mon Sep 17 00:00:00 2001
From: Thomas Foskolos <thomas@reborrn.com>
Date: Thu, 17 Nov 2022 09:26:15 +0200
Subject: [PATCH] added relative go to negative with the minus sign prefilled

---
 package.json     |  1 +
 src/extension.ts | 58 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)

diff --git a/package.json b/package.json
index 9b83a20..7f78e3e 100644
--- a/package.json
+++ b/package.json
@@ -37,6 +37,7 @@
     "shortcuts",
     "relative",
     "goto",
+    "gotoNegative",
     "lines",
     "jump"
   ],
diff --git a/src/extension.ts b/src/extension.ts
index 2d2452f..6e7b910 100644
--- a/src/extension.ts
+++ b/src/extension.ts
@@ -74,6 +74,63 @@ export async function activate(context: vscode.ExtensionContext) {
     }
   );
 
+// The command has been defined in the package.json file
+  // Now provide the implementation of the command with registerCommand
+  // The commandId parameter must match the command field in package.json
+  const registeredCommandGotoNegative = vscode.commands.registerCommand(
+    "relativity.gotoNegative",
+    async () => {
+      // Get the current editor
+      const editor: vscode.TextEditor | undefined =
+        vscode.window.activeTextEditor;
+
+      // If the current editor is undefined (meaning user focus not on a editor), just ignore the command
+      if (!editor) return;
+
+      // Get input from user
+      const input: string | undefined = await vscode.window.showInputBox({
+        value: "-",
+        prompt: "Jump using relative number of lines",
+        validateInput: newPeekline(editor),
+      });
+      // Delete highlight generated in preview function
+      deleteHighlight(editor);
+
+      // End if input box closed after losing focus or if user pressed esc or if user pressed enter with no input
+      if (input === undefined || input === "") {
+        // Replace visible range/viewPort with how it was before the preview
+        editor.revealRange(
+          new vscode.Range(editor.selection.active, editor.selection.active),
+          vscode.TextEditorRevealType.InCenterIfOutsideViewport
+        );
+
+        return;
+      }
+
+      // Get lines to jump and characters to jump from input
+      const { linesToJump, charactersToJump } = parseInput(input);
+
+      // Create the new end position using linesToJump
+      const newPosition: vscode.Position = createNewPosition(
+        editor,
+        linesToJump,
+        charactersToJump
+      );
+
+      // Create new selection object where the start and end positions are the same, to make it a singular cursor movement
+      const newSelection: vscode.Selection = new vscode.Selection(
+        newPosition,
+        newPosition
+      );
+
+      // Set new selection onto current text editor
+      editor.selection = newSelection;
+
+      // Shifts visible range if needed
+      shiftVisibleRange(editor, newPosition);
+    }
+  );
+
   const registeredCommandSelect = vscode.commands.registerCommand(
     "relativity.select",
     async () => {
@@ -130,6 +187,7 @@ export async function activate(context: vscode.ExtensionContext) {
   );
 
   context.subscriptions.push(registeredCommandGoto);
+  context.subscriptions.push(registeredCommandGotoNegative);
   context.subscriptions.push(registeredCommandSelect);
 }