From 0bc6bfcffe3319a339e28e64a81600a85382d61e Mon Sep 17 00:00:00 2001
From: Joe Wreschnig <joe.wreschnig@gmail.com>
Date: Tue, 12 Mar 2013 14:38:17 +0100
Subject: [PATCH] Allow Command+Click to enter a raw key code.

---
 Classes/NJKeyInputField.h                   |   2 +-
 Classes/NJKeyInputField.m                   |  65 ++++++++++++++++++--
 Info.plist                                  |   2 +-
 Resources/English.lproj/Localizable.strings | Bin 6426 -> 6904 bytes
 4 files changed, 62 insertions(+), 7 deletions(-)

diff --git a/Classes/NJKeyInputField.h b/Classes/NJKeyInputField.h
index c17fdaa..c32e16c 100644
--- a/Classes/NJKeyInputField.h
+++ b/Classes/NJKeyInputField.h
@@ -11,7 +11,7 @@ extern const CGKeyCode NJKeyInputFieldEmpty;
 
 @protocol NJKeyInputFieldDelegate;
 
-@interface NJKeyInputField : NSControl
+@interface NJKeyInputField : NSControl <NSTextFieldDelegate>
     // An NJKeyInputField is a NSTextField-like widget that receives
     // exactly one key press, and displays the name of that key, then
     // resigns its first responder status. It can also inform a
diff --git a/Classes/NJKeyInputField.m b/Classes/NJKeyInputField.m
index 4e5513a..02896a8 100644
--- a/Classes/NJKeyInputField.m
+++ b/Classes/NJKeyInputField.m
@@ -19,6 +19,7 @@ const CGKeyCode NJKeyInputFieldEmpty = kVK_MAX;
 
 @implementation NJKeyInputField {
     NSTextField *field;
+    NSImageView *warning;
 }
 
 - (id)initWithFrame:(NSRect)frameRect {
@@ -27,7 +28,21 @@ const CGKeyCode NJKeyInputFieldEmpty = kVK_MAX;
         field.alignment = NSCenterTextAlignment;
         field.editable = NO;
         field.selectable = NO;
+        field.delegate = self;
         [self addSubview:field];
+        
+        warning = [[NSImageView alloc] init];
+        warning.image = [NSImage imageNamed:@"NSInvalidDataFreestanding"];
+        CGSize imgSize = warning.image.size;
+        CGRect bounds = self.bounds;
+        warning.frame = CGRectMake(bounds.size.width - (imgSize.width + 4),
+                                   (bounds.size.height - imgSize.height) / 2,
+                                   imgSize.width, imgSize.height);
+        
+        warning.toolTip = NSLocalizedString(@"invalid key code",
+                                            @"shown when the user types an invalid key code");
+        warning.hidden = YES;
+        [self addSubview:warning];
     }
     return self;
 }
@@ -220,12 +235,51 @@ const CGKeyCode NJKeyInputFieldEmpty = kVK_MAX;
         [self resignIfFirstResponder];
     }
 }
+
+static BOOL isValidKeyCode(long code) {
+    return code < 0xFFFF && code >= 0;
+}
+
+- (void)controlTextDidChange:(NSNotification *)obj {
+    char *error = NULL;
+    long code = strtol(field.stringValue.UTF8String, &error, 16);
+    warning.hidden = (isValidKeyCode(code) && !*error) || !field.stringValue.length;
+}
+
+- (void)controlTextDidEndEditing:(NSNotification *)obj {
+    [field.cell setPlaceholderString:@""];
+    field.editable = NO;
+    field.selectable = NO;
+    warning.hidden = YES;
+    char *error = NULL;
+    const char *s = field.stringValue.UTF8String;
+    long code = strtol(s, &error, 16);
     
+    if (!*error && isValidKeyCode(code) && field.stringValue.length) {
+        self.keyCode = code;
+        [self.delegate keyInputField:self didChangeKey:self.keyCode];
+    } else {
+        self.keyCode = self.keyCode;
+    }
+}
+
 - (void)mouseDown:(NSEvent *)theEvent {
-    if (self.window.firstResponder == self)
-        [self.window makeFirstResponder:nil];
-    else if (self.acceptsFirstResponder)
-        [self.window makeFirstResponder:self];
+    if (self.isEnabled) {
+        if (theEvent.modifierFlags & NSCommandKeyMask) {
+            field.editable = YES;
+            field.selectable = YES;
+            field.stringValue = @"";
+            [field.cell setPlaceholderString:
+             NSLocalizedString(@"enter key code",
+                               @"shown when user must enter a key code to map to")];
+            [self.window makeFirstResponder:field];
+        } else {
+            if (self.window.firstResponder == self)
+                [self.window makeFirstResponder:nil];
+            else if (self.acceptsFirstResponder)
+                [self.window makeFirstResponder:self];
+        }
+    }
 }
 
 - (void)flagsChanged:(NSEvent *)theEvent {
@@ -235,7 +289,8 @@ const CGKeyCode NJKeyInputFieldEmpty = kVK_MAX;
     // user type these virtual keys. However, there is no actual event
     // for modifier key up - so detect it by checking to see if any
     // modifiers are still down.
-    if (!(theEvent.modifierFlags & NSDeviceIndependentModifierFlagsMask)) {
+    if (!field.isEditable
+        && !(theEvent.modifierFlags & NSDeviceIndependentModifierFlagsMask)) {
         self.keyCode = theEvent.keyCode;
         [self.delegate keyInputField:self didChangeKey:_keyCode];
     }
diff --git a/Info.plist b/Info.plist
index 9bb0e57..c72bc22 100644
--- a/Info.plist
+++ b/Info.plist
@@ -46,7 +46,7 @@
 	<key>CFBundleSignature</key>
 	<string>????</string>
 	<key>CFBundleVersion</key>
-	<string>184</string>
+	<string>185</string>
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.utilities</string>
 	<key>NSHumanReadableCopyright</key>
diff --git a/Resources/English.lproj/Localizable.strings b/Resources/English.lproj/Localizable.strings
index b1dda717ff5c028e3d1578f8c9a40ce5975234ab..91f6bf7891c9bc9ec5f3a6f4583ff453c7a321fb 100644
GIT binary patch
delta 441
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zQ3MIMnZ3Q4-Pwb2Yo7Yay^lE@Y_Wo1oMWoc8a|Q7I~x)QM6wb*Z%yV4;vN5E@+ZWC
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z%FDx7z}a0&`IIr0XNz$|yo7~GWaWy{C7a*JX8js<Kz7`}RC;e~#HygW+{TihP!ojA
i<gUi-@u&!PT@%aqo|@*vphkyndaOj(bm1IkkC{6j4^ayM

delta 21
dcmexiI?HH-2kYbpHnGh{Y<wJ>z4+I00{~Zl2J8R;

-- 
2.20.1