Multiple "Edit/Special Characters" menu entries on Mac OS X (Cocoa)

Every time [NSApp setMainMenu:] is called, Cocoa will add the 'Special
Characters' item to the 'Edit' menu. Before adding a new entry it will
make sure that menu items list doesn't contain an item with the selector
'orderFrontCharacterPalette' & a 'nil' target. We need to return the
index for the first entry (we have QCocoaMenuLoader as target).

Task-number: QTBUG-12842
Reviewed-by: Denis
(cherry picked from commit b52da4ab2179079a6aff95891786d2f6598048b5)

4 files changed, 19 insertions, 0 deletions

diff --git a/src/gui/kernel/qcocoamenuloader_mac.mm b/src/gui/kernel/qcocoamenuloader_mac.mm
index 8d65aa1..8d38f45 100644
--- a/src/gui/kernel/qcocoamenuloader_mac.mm
+++ b/src/gui/kernel/qcocoamenuloader_mac.mm
@@ -255,5 +255,10 @@ QT_USE_NAMESPACE
         qApp->quit();
     }
 }
+
+ - (void)orderFrontCharacterPalette:(id)sender
+ {
+     [NSApp orderFrontCharacterPalette:sender];
+ }
 @end
 #endif // QT_MAC_USE_COCOA
diff --git a/src/gui/kernel/qcocoamenuloader_mac_p.h b/src/gui/kernel/qcocoamenuloader_mac_p.h
index a75ad0a..edacfa5 100644
--- a/src/gui/kernel/qcocoamenuloader_mac_p.h
+++ b/src/gui/kernel/qcocoamenuloader_mac_p.h
@@ -88,6 +88,7 @@
 - (IBAction)hide:(id)sender;
 - (IBAction)qtDispatcherToQAction:(id)sender;
 - (void)qtUpdateMenubar;
+- (void)orderFrontCharacterPalette:(id)sender;
 @end
 
 #endif // QT_MAC_USE_COCOA
diff --git a/src/gui/widgets/qcocoamenu_mac.mm b/src/gui/widgets/qcocoamenu_mac.mm
index ce85919..15fae23 100644
--- a/src/gui/widgets/qcocoamenu_mac.mm
+++ b/src/gui/widgets/qcocoamenu_mac.mm
@@ -188,6 +188,18 @@ QT_USE_NAMESPACE
     return NO;
 }
 
+- (NSInteger)indexOfItemWithTarget:(id)anObject andAction:(SEL)actionSelector
+{
+     NSInteger index = [super indexOfItemWithTarget:anObject andAction:actionSelector];
+     static SEL selForOFCP = NSSelectorFromString(@"orderFrontCharacterPalette:");
+     if (index == -1 && selForOFCP == actionSelector) {
+         // Check if the 'orderFrontCharacterPalette' SEL exists for QCocoaMenuLoader object
+         QT_MANGLE_NAMESPACE(QCocoaMenuLoader) *loader = [NSApp QT_MANGLE_NAMESPACE(qt_qcocoamenuLoader)];
+         return [super indexOfItemWithTarget:loader andAction:actionSelector];
+     }
+     return index;
+}
+
 @end
 
 QT_BEGIN_NAMESPACE
diff --git a/src/gui/widgets/qcocoamenu_mac_p.h b/src/gui/widgets/qcocoamenu_mac_p.h
index d6ac8c5..1a42642 100644
--- a/src/gui/widgets/qcocoamenu_mac_p.h
+++ b/src/gui/widgets/qcocoamenu_mac_p.h
@@ -76,6 +76,7 @@ QT_FORWARD_DECLARE_CLASS(QAction)
 }
 - (id)initWithQMenu:(QMenu*)menu;
 - (BOOL)menuHasKeyEquivalent:(NSMenu *)menu forEvent:(NSEvent *)event target:(id *)target action:(SEL *)action;
+- (NSInteger)indexOfItemWithTarget:(id)anObject andAction:(SEL)actionSelector;
 @end
 #endif