KeyboardSimulator: Add `simpleKeyPressWithKey:` method

This as yet untested method will be responsible for simulating a key
press given a single-character string corresponding to the glyph of the
key to be pressed.

It relies on `keyCodeForChar:` to get the `CGKeyCode` corresponding to
the glyph, a method which is currently just a placeholder.

2 files changed, 27 insertions, 0 deletions

diff --git a/DomeKey/KeyboardSimulator.h b/DomeKey/KeyboardSimulator.h
index bdd62b5..dc471d3 100644
--- a/DomeKey/KeyboardSimulator.h
+++ b/DomeKey/KeyboardSimulator.h
@@ -10,4 +10,7 @@
 
 @interface KeyboardSimulator : NSObject
 
++ (CGKeyCode)keyCodeForChar:(NSString *)aChar;
++ (void)simpleKeyPressWithKey:(NSString *)aChar;
+
 @end
diff --git a/DomeKey/KeyboardSimulator.m b/DomeKey/KeyboardSimulator.m
index f33601a..2fa808d 100644
--- a/DomeKey/KeyboardSimulator.m
+++ b/DomeKey/KeyboardSimulator.m
@@ -10,4 +10,28 @@
 
 @implementation KeyboardSimulator
 
++ (CGKeyCode)keyCodeForChar:(NSString *)aChar
+{
+    return (CGKeyCode)0;
+}
+
++ (void)simpleKeyPressWithKey:(NSString *)aChar
+{
+    CGEventSourceRef source = CGEventSourceCreate(
+        kCGEventSourceStateHIDSystemState
+    );
+
+    CGKeyCode key_code = [self keyCodeForChar:aChar];
+
+    CGEventRef key_down = CGEventCreateKeyboardEvent(source, key_code, true);
+    CGEventRef key_up = CGEventCreateKeyboardEvent(source, key_code, false);
+
+    CGEventPost(kCGHIDEventTap, key_down);
+    CGEventPost(kCGHIDEventTap, key_up);
+
+    CFRelease(key_down);
+    CFRelease(key_up);
+    CFRelease(source);
+}
+
 @end