Fix the limitation of mouse event on the candidate window on macOS 15.

* Used the RendererReceiver class as a proxy to receive messages from MozcRenderer.

PiperOrigin-RevId: 683089226

src/mac/BUILD.bazel

@@ -108,6 +108,7 @@ mozc_objc_library(
     deps = [
         ":imk_controller",
         ":imk_server",
+        ":renderer_receiver",
         "//base:const",
         "//base:crash_report_handler",
         "//base:init_mozc",
@@ -145,6 +146,7 @@ mozc_objc_library(
         ":common",
         ":imk_server",
         ":keycode_map",
+        ":renderer_receiver",
         "//base:const",
         "//base:process",
         "//base:util",

src/mac/GoogleJapaneseInputController.h

@@ -32,6 +32,7 @@
 
 #import "mac/KeyCodeMap.h"
 #import "mac/common.h"
+#import "mac/renderer_receiver.h"
 
 #include <cstdint>
 #include <memory>
@@ -106,6 +107,12 @@
   IBOutlet NSMenu *menu_;
 }
 
+/** Sets the RendererReceiver used by all instances of the controller.
+ * the RendererReceiver is a singleton object used as a proxy to receive messages from
+ * the renderer process and propage it to the active controller instance.
+ */
++ (void)setGlobalRendererReceiver:(RendererReceiver *)rendererReceiver;
+
 /** sendCommand: is called to send SessionCommand to the server from the renderer, when the user
  * clicks a candidate item in candidate windows or when the renderer sends the usage stats event
  * information. */
@@ -134,4 +141,5 @@
 
 /** Sets the RendererInterface to use in the controller. */
 - (void)setRenderer:(std::unique_ptr<mozc::renderer::RendererInterface>)newRenderer;
+
 @end

src/mac/GoogleJapaneseInputController.mm

@@ -49,6 +49,7 @@
 #import "mac/GoogleJapaneseInputControllerInterface.h"
 #import "mac/GoogleJapaneseInputServer.h"
 #import "mac/KeyCodeMap.h"
+#import "mac/renderer_receiver.h"
 
 #include "absl/log/log.h"
 #include "absl/strings/string_view.h"
@@ -77,6 +78,10 @@
 using SetOfString = std::set<std::string, std::less<>>;
 
 namespace {
+// Global object used as a singleton used as a proxy to receive messages from
+// the renderer process.
+RendererReceiver *gRendererReceiver = nil;
+
 // TODO(horo): This value should be get from system configuration.
 //  DoubleClickInterval can be get from NSEvent (MacOSX ver >= 10.6)
 constexpr NSTimeInterval kDoubleTapInterval = 0.5;
@@ -280,11 +285,8 @@ - (void)activateServer:(id)sender {
   }
   [self handleConfig];
 
-  // This is a workaroud due to the crash issue on macOS 15.
-  NSOperatingSystemVersion versionInfo = [[NSProcessInfo processInfo] operatingSystemVersion];
-  if (versionInfo.majorVersion < 15) {
-    [imkServer_ setCurrentController:self];
-  }
+  // Sets this controller as the active controller to receive messages from the renderer process.
+  [gRendererReceiver setCurrentController:self];
 
   std::string window_name, window_owner;
   if (mozc::MacUtil::GetFrontmostWindowNameAndOwner(&window_name, &window_owner)) {
@@ -955,4 +957,8 @@ - (void)outputResult:(mozc::commands::Output *)output {
   }
   [self commitText:output->result().value().c_str() client:[self client]];
 }
+
++ (void)setGlobalRendererReceiver:(RendererReceiver *)rendererReceiver {
+  gRendererReceiver = rendererReceiver;
+}
 @end

src/mac/mac.gyp

@@ -273,6 +273,7 @@
             'GoogleJapaneseInputServer.mm',
             'KeyCodeMap.mm',
             'main.mm',
+            'renderer_receiver.mm',
           ],
           'product_name': '<(branding)',
           'dependencies': [

src/mac/main.mm

@@ -28,11 +28,13 @@
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #import <Cocoa/Cocoa.h>
-
-#include <memory>
+#import <Foundation/Foundation.h>
 
 #import "mac/GoogleJapaneseInputController.h"
 #import "mac/GoogleJapaneseInputServer.h"
+#import "mac/renderer_receiver.h"
+
+#include <memory>
 
 #include "absl/flags/flag.h"
 #include "absl/log/log.h"
@@ -69,11 +71,10 @@ int main(int argc, char *argv[]) {
   }
   DLOG(INFO) << mozc::kProductNameInEnglish << " initialized";
 
-  // This is a workaroud due to the crash issue on macOS 15.
-  NSOperatingSystemVersion versionInfo = [[NSProcessInfo processInfo] operatingSystemVersion];
-  if (versionInfo.majorVersion < 15) {
-    [imkServer registerRendererConnection];
-  }
+  NSString *rendererConnectionName = @kProductPrefix "_Renderer_Connection";
+  RendererReceiver *rendererReceiver =
+      [[RendererReceiver alloc] initWithName:rendererConnectionName];
+  [GoogleJapaneseInputController setGlobalRendererReceiver:rendererReceiver];
 
   // Start the converter server at this time explicitly to prevent the
   // slow-down of the response for initial key event.