gecko-dev/dom/plugins/ipc/PluginUtilsOSX.mm

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  *   Benoit Girard <b56girard@gmail.com>
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#import <AppKit/AppKit.h>
#include "PluginUtilsOSX.h"

// Remove definitions for try/catch interfering with ObjCException macros.
#include "nsObjCExceptions.h"

using namespace mozilla::plugins::PluginUtilsOSX;

@interface EventProcessor : NSObject {
  RemoteProcessEvents   aRemoteEvents;
  void                 *aPluginModule;
}
- (void)setRemoteEvents:(RemoteProcessEvents) remoteEvents pluginModule:(void*) pluginModule;
- (void)onTick;
@end

@implementation EventProcessor
- (void) onTick
{
    aRemoteEvents(aPluginModule);
}

- (void)setRemoteEvents:(RemoteProcessEvents) remoteEvents pluginModule:(void*) pluginModule
{
    aRemoteEvents = remoteEvents;
    aPluginModule = pluginModule;
}
@end

#define EVENT_PROCESS_DELAY 0.05 // 50 ms

NPError mozilla::plugins::PluginUtilsOSX::ShowCocoaContextMenu(void* aMenu, int aX, int aY, void* pluginModule, RemoteProcessEvents remoteEvent) 
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

  // Create a timer to process browser events while waiting
  // on the menu. This prevents the browser from hanging
  // during the lifetime of the menu.
  EventProcessor* eventProcessor = [[EventProcessor alloc] init];
  [eventProcessor setRemoteEvents:remoteEvent pluginModule:pluginModule];
  NSTimer *eventTimer = [NSTimer timerWithTimeInterval:EVENT_PROCESS_DELAY
                             target:eventProcessor selector:@selector(onTick) 
                             userInfo:nil repeats:TRUE];
  // Use NSEventTrackingRunLoopMode otherwise the timer will
  // not fire during the right click menu.
  [[NSRunLoop currentRunLoop] addTimer:eventTimer 
                              forMode:NSEventTrackingRunLoopMode];

  NSMenu* nsmenu = reinterpret_cast<NSMenu*>(aMenu);
  NSPoint screen_point = ::NSMakePoint(aX, aY);

  [nsmenu popUpMenuPositioningItem:nil atLocation:screen_point inView:nil];

  [eventTimer invalidate];
  [eventProcessor release];

  return NPERR_NO_ERROR;

  NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(NPERR_GENERIC_ERROR);
}

void mozilla::plugins::PluginUtilsOSX::InvokeNativeEventLoop()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
  ::CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0.0, true);
  NS_OBJC_END_TRY_ABORT_BLOCK;
}