winemac.drv: Allow mac IME to clear text in system input method.

dlls/winemac.drv/cocoa_window.m

@@ -702,6 +702,13 @@ static CVReturn WineDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTi
         [self invalidateHasGLDescendant];
     }
 
+    - (void) clearMarkedText
+    {
+        [markedText deleteCharactersInRange:NSMakeRange(0, [markedText length])];
+        markedTextSelection = NSMakeRange(0, 0);
+        [[self inputContext] discardMarkedText];
+    }
+
     - (void) completeText:(NSString*)text
     {
         macdrv_event* event;
@@ -716,9 +723,7 @@ static CVReturn WineDisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTi
 
         macdrv_release_event(event);
 
-        [markedText deleteCharactersInRange:NSMakeRange(0, [markedText length])];
-        markedTextSelection = NSMakeRange(0, 0);
-        [[self inputContext] discardMarkedText];
+        [self clearMarkedText];
     }
 
     - (void) didAddSubview:(NSView*)subview
@@ -3907,3 +3912,18 @@ void macdrv_send_text_input_event(int pressed, unsigned int flags, int repeat, i
         macdrv_release_event(event);
     });
 }
+
+void macdrv_clear_ime_text(void)
+{
+    OnMainThreadAsync(^{
+        WineWindow* window = (WineWindow*)[NSApp keyWindow];
+        if (![window isKindOfClass:[WineWindow class]])
+        {
+            window = (WineWindow*)[NSApp mainWindow];
+            if (![window isKindOfClass:[WineWindow class]])
+                window = [[WineApplicationController sharedController] frontWineWindow];
+        }
+        if (window)
+            [[window contentView] clearMarkedText];
+    });
+}

dlls/winemac.drv/ime.c

@@ -76,7 +76,6 @@ static UINT WM_MSIME_RECONVERT;
 static UINT WM_MSIME_QUERYPOSITION;
 static UINT WM_MSIME_DOCUMENTFEED;
 
-
 static HIMC RealIMC(HIMC hIMC)
 {
     if (hIMC == FROM_MACDRV)
@@ -840,6 +839,7 @@ BOOL WINAPI NotifyIME(HIMC hIMC, DWORD dwAction, DWORD dwIndex, DWORD dwValue)
 
                     TRACE("NI_COMPOSITIONSTR: CPS_CANCEL\n");
 
+                    macdrv_clear_ime_text();
                     if (lpIMC->hCompStr)
                         ImmDestroyIMCC(lpIMC->hCompStr);
 

dlls/winemac.drv/macdrv_cocoa.h

@@ -580,4 +580,6 @@ extern void macdrv_destroy_status_item(macdrv_status_item s) DECLSPEC_HIDDEN;
 extern void macdrv_set_status_item_image(macdrv_status_item s, CGImageRef cgimage) DECLSPEC_HIDDEN;
 extern void macdrv_set_status_item_tooltip(macdrv_status_item s, CFStringRef cftip) DECLSPEC_HIDDEN;
 
+extern void macdrv_clear_ime_text(void) DECLSPEC_HIDDEN;
+
 #endif  /* __WINE_MACDRV_COCOA_H */