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/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#import "PluginProcessShim.h"
#import <AppKit/AppKit.h>
#import <Carbon/Carbon.h>
#import <WebKitSystemInterface.h>
#import <stdio.h>
#import <objc/objc-runtime.h>
#define DYLD_INTERPOSE(_replacement,_replacee) \
__attribute__((used)) static struct{ const void* replacement; const void* replacee; } _interpose_##_replacee \
__attribute__ ((section ("__DATA,__interpose"))) = { (const void*)(unsigned long)&_replacement, (const void*)(unsigned long)&_replacee };
namespace WebKit {
extern "C" void WebKitPluginProcessShimInitialize(const PluginProcessShimCallbacks& callbacks);
static PluginProcessShimCallbacks pluginProcessShimCallbacks;
static IMP NSApplication_RunModalForWindow;
static unsigned modalCount = 0;
static void beginModal()
{
// Make sure to make ourselves the front process
ProcessSerialNumber psn;
GetCurrentProcess(&psn);
SetFrontProcess(&psn);
if (!modalCount++)
pluginProcessShimCallbacks.setModal(true);
}
static void endModal()
{
if (!--modalCount)
pluginProcessShimCallbacks.setModal(false);
}
static NSInteger shim_NSApplication_RunModalForWindow(id self, SEL _cmd, NSWindow* window)
{
beginModal();
NSInteger result = ((NSInteger (*)(id, SEL, NSWindow *))NSApplication_RunModalForWindow)(self, _cmd, window);
endModal();
return result;
}
#ifndef __LP64__
static void shimDebugger(void)
{
if (!pluginProcessShimCallbacks.shouldCallRealDebugger())
return;
Debugger();
}
static UInt32 shimGetCurrentEventButtonState()
{
return pluginProcessShimCallbacks.getCurrentEventButtonState();
}
static Boolean shimIsWindowActive(WindowRef window)
{
bool result;
if (pluginProcessShimCallbacks.isWindowActive(window, result))
return result;
return IsWindowActive(window);
}
static void shimModalDialog(ModalFilterUPP modalFilter, DialogItemIndex *itemHit)
{
beginModal();
ModalDialog(modalFilter, itemHit);
endModal();
}
static DialogItemIndex shimAlert(SInt16 alertID, ModalFilterUPP modalFilter)
{
beginModal();
DialogItemIndex index = Alert(alertID, modalFilter);
endModal();
return index;
}
static void shimShowWindow(WindowRef window)
{
pluginProcessShimCallbacks.carbonWindowShown(window);
ShowWindow(window);
}
static void shimHideWindow(WindowRef window)
{
pluginProcessShimCallbacks.carbonWindowHidden(window);
HideWindow(window);
}
static bool isMenuBarVisible = true;
static void shimShowMenuBar(void)
{
isMenuBarVisible = true;
ShowMenuBar();
}
static void shimHideMenuBar(void)
{
isMenuBarVisible = false;
// Make sure to make ourselves the front process
ProcessSerialNumber psn;
GetCurrentProcess(&psn);
SetFrontProcess(&psn);
HideMenuBar();
}
static Boolean shimIsMenuBarVisible(void)
{
return isMenuBarVisible;
}
DYLD_INTERPOSE(shimDebugger, Debugger);
DYLD_INTERPOSE(shimGetCurrentEventButtonState, GetCurrentEventButtonState);
DYLD_INTERPOSE(shimIsWindowActive, IsWindowActive);
DYLD_INTERPOSE(shimModalDialog, ModalDialog);
DYLD_INTERPOSE(shimAlert, Alert);
DYLD_INTERPOSE(shimShowWindow, ShowWindow);
DYLD_INTERPOSE(shimHideWindow, HideWindow);
DYLD_INTERPOSE(shimShowMenuBar, ShowMenuBar)
DYLD_INTERPOSE(shimHideMenuBar, HideMenuBar)
DYLD_INTERPOSE(shimIsMenuBarVisible, IsMenuBarVisible);
#endif
__attribute__((visibility("default")))
void WebKitPluginProcessShimInitialize(const PluginProcessShimCallbacks& callbacks)
{
pluginProcessShimCallbacks = callbacks;
// Override -[NSApplication runModalForWindow:]
Method runModalForWindowMethod = class_getInstanceMethod(objc_getClass("NSApplication"), @selector(runModalForWindow:));
NSApplication_RunModalForWindow = method_setImplementation(runModalForWindowMethod, reinterpret_cast<IMP>(shim_NSApplication_RunModalForWindow));
NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
// Track when any Cocoa window is about to be be shown.
id orderOnScreenObserver = [defaultCenter addObserverForName:WKWindowWillOrderOnScreenNotification()
object:nil
queue:nil
usingBlock:^(NSNotification *notification) { pluginProcessShimCallbacks.cocoaWindowShown([notification object]); }];
// Track when any cocoa window is about to be hidden.
id orderOffScreenObserver = [defaultCenter addObserverForName:WKWindowWillOrderOffScreenNotification()
object:nil
queue:nil
usingBlock:^(NSNotification *notification) { pluginProcessShimCallbacks.cocoaWindowHidden([notification object]); }];
// Leak the two observers so that they observe notifications for the lifetime of the process.
CFRetain(orderOnScreenObserver);
CFRetain(orderOffScreenObserver);
}
} // namespace WebKit
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