From 4f9be699acd19f8613b2c6594cefb7559ea34af1 Mon Sep 17 00:00:00 2001
From: Federico Terzi <federicoterzi96@gmail.com>
Date: Wed, 23 Oct 2019 19:13:21 +0200
Subject: [PATCH] Add cursor position implementation for MacOS

---
 native/libmacbridge/bridge.h  |  5 +++++
 native/libmacbridge/bridge.mm | 42 +++++++++++++++++++----------------
 src/bridge/macos.rs           |  1 +
 src/keyboard/macos.rs         |  7 ++++++
 4 files changed, 36 insertions(+), 19 deletions(-)

diff --git a/native/libmacbridge/bridge.h b/native/libmacbridge/bridge.h
index 8f414d9..b3bc3d1 100644
--- a/native/libmacbridge/bridge.h
+++ b/native/libmacbridge/bridge.h
@@ -60,6 +60,11 @@ void send_string(const char * string);
  */
 void send_vkey(int32_t vk);
 
+/*
+ * Send the Virtual Key press multiple times
+ */
+void send_multi_vkey(int32_t vk, int32_t count);
+
 /*
  * Send the backspace keypress, *count* times.
  */
diff --git a/native/libmacbridge/bridge.mm b/native/libmacbridge/bridge.mm
index 361bfa3..d55ede4 100644
--- a/native/libmacbridge/bridge.mm
+++ b/native/libmacbridge/bridge.mm
@@ -101,23 +101,7 @@ void send_string(const char * string) {
 }
 
 void delete_string(int32_t count) {
-    dispatch_async(dispatch_get_main_queue(), ^(void) {
-        for (int i = 0; i < count; i++) {
-            CGEventRef keydown;
-            keydown = CGEventCreateKeyboardEvent(NULL, 0x33, true);
-            CGEventPost(kCGHIDEventTap, keydown);
-            CFRelease(keydown);
-
-            usleep(2000);
-
-            CGEventRef keyup;
-            keyup = CGEventCreateKeyboardEvent(NULL, 0x33, false);
-            CGEventPost(kCGHIDEventTap, keyup);
-            CFRelease(keyup);
-
-            usleep(2000);
-        }
-    });
+    send_multi_vkey(0x33, count);
 }
 
 void send_vkey(int32_t vk) {
@@ -127,14 +111,34 @@ void send_vkey(int32_t vk) {
         CGEventPost(kCGHIDEventTap, keydown);
         CFRelease(keydown);
 
-        usleep(2000);
+        usleep(500);
 
         CGEventRef keyup;
         keyup = CGEventCreateKeyboardEvent(NULL, vk, false);
         CGEventPost(kCGHIDEventTap, keyup);
         CFRelease(keyup);
 
-        usleep(2000);
+        usleep(500);
+    });
+}
+
+void send_multi_vkey(int32_t vk, int32_t count) {
+    dispatch_async(dispatch_get_main_queue(), ^(void) {
+        for (int i = 0; i < count; i++) {
+            CGEventRef keydown;
+            keydown = CGEventCreateKeyboardEvent(NULL, vk, true);
+            CGEventPost(kCGHIDEventTap, keydown);
+            CFRelease(keydown);
+
+            usleep(500);
+
+            CGEventRef keyup;
+            keyup = CGEventCreateKeyboardEvent(NULL, vk, false);
+            CGEventPost(kCGHIDEventTap, keyup);
+            CFRelease(keyup);
+
+            usleep(500);
+        }
     });
 }
 
diff --git a/src/bridge/macos.rs b/src/bridge/macos.rs
index 830e994..b229928 100644
--- a/src/bridge/macos.rs
+++ b/src/bridge/macos.rs
@@ -54,6 +54,7 @@ extern {
 
     pub fn send_string(string: *const c_char);
     pub fn send_vkey(vk: i32);
+    pub fn send_multi_vkey(vk: i32, count: i32);
     pub fn delete_string(count: i32);
     pub fn trigger_paste();
 }
\ No newline at end of file
diff --git a/src/keyboard/macos.rs b/src/keyboard/macos.rs
index 7381dc1..724845a 100644
--- a/src/keyboard/macos.rs
+++ b/src/keyboard/macos.rs
@@ -48,4 +48,11 @@ impl super::KeyboardManager for MacKeyboardManager {
     fn delete_string(&self, count: i32) {
         unsafe {delete_string(count)}
     }
+
+    fn move_cursor_left(&self, count: i32) {
+        unsafe {
+            // Simulate the Left arrow count times
+            send_multi_vkey(0x7B, count);
+        }
+    }
 }
\ No newline at end of file