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      1 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #import <AppKit/AppKit.h>
      6 
      7 #include "base/logging.h"
      8 #include "build/build_config.h"
      9 #include "content/child/npapi/plugin_instance.h"
     10 
     11 // When C++ exceptions are disabled, the C++ library defines |try| and
     12 // |catch| so as to allow exception-expecting C++ code to build properly when
     13 // language support for exceptions is not present.  These macros interfere
     14 // with the use of |@try| and |@catch| in Objective-C files such as this one.
     15 // Undefine these macros here, after everything has been #included, since
     16 // there will be no C++ uses and only Objective-C uses from this point on.
     17 #undef try
     18 #undef catch
     19 
     20 namespace content {
     21 
     22 NPError PluginInstance::PopUpContextMenu(NPMenu* menu) {
     23   if (!currently_handled_event_)
     24     return NPERR_GENERIC_ERROR;
     25 
     26   CGRect main_display_bounds = CGDisplayBounds(CGMainDisplayID());
     27   NSPoint screen_point = NSMakePoint(
     28       plugin_origin_.x() + currently_handled_event_->data.mouse.pluginX,
     29       plugin_origin_.y() + currently_handled_event_->data.mouse.pluginY);
     30   // Plugin offsets are upper-left based, so flip vertically for Cocoa.
     31   screen_point.y = main_display_bounds.size.height - screen_point.y;
     32 
     33   NSMenu* nsmenu = reinterpret_cast<NSMenu*>(menu);
     34   NPError return_val = NPERR_NO_ERROR;
     35   @try {
     36     [nsmenu popUpMenuPositioningItem:nil atLocation:screen_point inView:nil];
     37   }
     38   @catch (NSException* e) {
     39     NSLog(@"Caught exception while handling PopUpContextMenu: %@", e);
     40     return_val = NPERR_GENERIC_ERROR;
     41   }
     42 
     43   return return_val;
     44 }
     45 
     46 ScopedCurrentPluginEvent::ScopedCurrentPluginEvent(PluginInstance* instance,
     47                                                    NPCocoaEvent* event)
     48     : instance_(instance) {
     49   instance_->set_currently_handled_event(event);
     50 }
     51 
     52 ScopedCurrentPluginEvent::~ScopedCurrentPluginEvent() {
     53   instance_->set_currently_handled_event(NULL);
     54 }
     55 
     56 }  // namespace content
     57