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gecko-dev/dom/plugins/ipc/PluginInterposeOSX.mm
Bill McCloskey 69446aded5 Bug 641685 - Start plugins from the chrome process in e10s (r=bsmedberg) 
This patch has a few side effects:
1. Plugins in the chrome process are "mirrored" to all content processes,
although this mirroring is currently imperfect (bug 1090576)
2. Plugins are no longer sorted by modification date in nsPluginHost.
3. Plugin exceptions are no longer propagated to JS code. They are ignored.
2014-10-29 08:05:36 -07:00

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
// vim:set ts=2 sts=2 sw=2 et cin:
// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * 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.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
// OWNER OR 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.
#include "base/basictypes.h"
#include "nsCocoaUtils.h"
#include "PluginModuleChild.h"
#include "nsDebug.h"
#include "PluginInterposeOSX.h"
#include <set>
#import <AppKit/AppKit.h>
#import <objc/runtime.h>
#import <Carbon/Carbon.h>
using mozilla::plugins::PluginModuleChild;
using mozilla::plugins::AssertPluginThread;
namespace mac_plugin_interposing {
int32_t NSCursorInfo::mNativeCursorsSupported = -1;
// This constructor may be called from the browser process or the plugin
// process.
NSCursorInfo::NSCursorInfo()
: mType(TypeArrow)
, mHotSpot(nsPoint(0, 0))
, mCustomImageData(NULL)
, mCustomImageDataLength(0)
{
}
NSCursorInfo::NSCursorInfo(NSCursor* aCursor)
: mType(TypeArrow)
, mHotSpot(nsPoint(0, 0))
, mCustomImageData(NULL)
, mCustomImageDataLength(0)
{
// This constructor is only ever called from the plugin process, so the
// following is safe.
if (!GetNativeCursorsSupported()) {
return;
}
NSPoint hotSpotCocoa = [aCursor hotSpot];
mHotSpot = nsPoint(hotSpotCocoa.x, hotSpotCocoa.y);
Class nsCursorClass = [NSCursor class];
if ([aCursor isEqual:[NSCursor arrowCursor]]) {
mType = TypeArrow;
} else if ([aCursor isEqual:[NSCursor closedHandCursor]]) {
mType = TypeClosedHand;
} else if ([aCursor isEqual:[NSCursor crosshairCursor]]) {
mType = TypeCrosshair;
} else if ([aCursor isEqual:[NSCursor disappearingItemCursor]]) {
mType = TypeDisappearingItem;
} else if ([aCursor isEqual:[NSCursor IBeamCursor]]) {
mType = TypeIBeam;
} else if ([aCursor isEqual:[NSCursor openHandCursor]]) {
mType = TypeOpenHand;
} else if ([aCursor isEqual:[NSCursor pointingHandCursor]]) {
mType = TypePointingHand;
} else if ([aCursor isEqual:[NSCursor resizeDownCursor]]) {
mType = TypeResizeDown;
} else if ([aCursor isEqual:[NSCursor resizeLeftCursor]]) {
mType = TypeResizeLeft;
} else if ([aCursor isEqual:[NSCursor resizeLeftRightCursor]]) {
mType = TypeResizeLeftRight;
} else if ([aCursor isEqual:[NSCursor resizeRightCursor]]) {
mType = TypeResizeRight;
} else if ([aCursor isEqual:[NSCursor resizeUpCursor]]) {
mType = TypeResizeUp;
} else if ([aCursor isEqual:[NSCursor resizeUpDownCursor]]) {
mType = TypeResizeUpDown;
// The following cursor types are only supported on OS X 10.6 and up.
} else if ([nsCursorClass respondsToSelector:@selector(contextualMenuCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(contextualMenuCursor)]]) {
mType = TypeContextualMenu;
} else if ([nsCursorClass respondsToSelector:@selector(dragCopyCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(dragCopyCursor)]]) {
mType = TypeDragCopy;
} else if ([nsCursorClass respondsToSelector:@selector(dragLinkCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(dragLinkCursor)]]) {
mType = TypeDragLink;
} else if ([nsCursorClass respondsToSelector:@selector(operationNotAllowedCursor)] &&
[aCursor isEqual:[nsCursorClass performSelector:@selector(operationNotAllowedCursor)]]) {
mType = TypeNotAllowed;
} else {
NSImage* image = [aCursor image];
NSArray* reps = image ? [image representations] : nil;
NSUInteger repsCount = reps ? [reps count] : 0;
if (!repsCount) {
// If we have a custom cursor with no image representations, assume we
// need a transparent cursor.
mType = TypeTransparent;
} else {
CGImageRef cgImage = nil;
// XXX We don't know how to deal with a cursor that doesn't have a
// bitmap image representation. For now we fall back to an arrow
// cursor.
for (NSUInteger i = 0; i < repsCount; ++i) {
id rep = [reps objectAtIndex:i];
if ([rep isKindOfClass:[NSBitmapImageRep class]]) {
cgImage = [(NSBitmapImageRep*)rep CGImage];
break;
}
}
if (cgImage) {
CFMutableDataRef data = ::CFDataCreateMutable(kCFAllocatorDefault, 0);
if (data) {
CGImageDestinationRef dest = ::CGImageDestinationCreateWithData(data,
kUTTypePNG,
1,
NULL);
if (dest) {
::CGImageDestinationAddImage(dest, cgImage, NULL);
if (::CGImageDestinationFinalize(dest)) {
uint32_t dataLength = (uint32_t) ::CFDataGetLength(data);
mCustomImageData = (uint8_t*) moz_xmalloc(dataLength);
::CFDataGetBytes(data, ::CFRangeMake(0, dataLength), mCustomImageData);
mCustomImageDataLength = dataLength;
mType = TypeCustom;
}
::CFRelease(dest);
}
::CFRelease(data);
}
}
if (!mCustomImageData) {
mType = TypeArrow;
}
}
}
}
NSCursorInfo::NSCursorInfo(const Cursor* aCursor)
: mType(TypeArrow)
, mHotSpot(nsPoint(0, 0))
, mCustomImageData(NULL)
, mCustomImageDataLength(0)
{
// This constructor is only ever called from the plugin process, so the
// following is safe.
if (!GetNativeCursorsSupported()) {
return;
}
mHotSpot = nsPoint(aCursor->hotSpot.h, aCursor->hotSpot.v);
int width = 16, height = 16;
int bytesPerPixel = 4;
int rowBytes = width * bytesPerPixel;
int bitmapSize = height * rowBytes;
bool isTransparent = true;
uint8_t* bitmap = (uint8_t*) moz_xmalloc(bitmapSize);
// The way we create 'bitmap' is largely "borrowed" from Chrome's
// WebCursor::InitFromCursor().
for (int y = 0; y < height; ++y) {
unsigned short data = aCursor->data[y];
unsigned short mask = aCursor->mask[y];
// Change 'data' and 'mask' from big-endian to little-endian, but output
// big-endian data below.
data = ((data << 8) & 0xFF00) | ((data >> 8) & 0x00FF);
mask = ((mask << 8) & 0xFF00) | ((mask >> 8) & 0x00FF);
// It'd be nice to use a gray-scale bitmap. But
// CGBitmapContextCreateImage() (used below) won't work with one that also
// has alpha values.
for (int x = 0; x < width; ++x) {
int offset = (y * rowBytes) + (x * bytesPerPixel);
// Color value
if (data & 0x8000) {
bitmap[offset] = 0x0;
bitmap[offset + 1] = 0x0;
bitmap[offset + 2] = 0x0;
} else {
bitmap[offset] = 0xFF;
bitmap[offset + 1] = 0xFF;
bitmap[offset + 2] = 0xFF;
}
// Mask value
if (mask & 0x8000) {
bitmap[offset + 3] = 0xFF;
isTransparent = false;
} else {
bitmap[offset + 3] = 0x0;
}
data <<= 1;
mask <<= 1;
}
}
if (isTransparent) {
// If aCursor is transparent, we don't need to serialize custom cursor
// data over IPC.
mType = TypeTransparent;
} else {
CGColorSpaceRef color = ::CGColorSpaceCreateDeviceRGB();
if (color) {
CGContextRef context =
::CGBitmapContextCreate(bitmap,
width,
height,
8,
rowBytes,
color,
kCGImageAlphaPremultipliedLast |
kCGBitmapByteOrder32Big);
if (context) {
CGImageRef image = ::CGBitmapContextCreateImage(context);
if (image) {
::CFMutableDataRef data = ::CFDataCreateMutable(kCFAllocatorDefault, 0);
if (data) {
CGImageDestinationRef dest =
::CGImageDestinationCreateWithData(data,
kUTTypePNG,
1,
NULL);
if (dest) {
::CGImageDestinationAddImage(dest, image, NULL);
if (::CGImageDestinationFinalize(dest)) {
uint32_t dataLength = (uint32_t) ::CFDataGetLength(data);
mCustomImageData = (uint8_t*) moz_xmalloc(dataLength);
::CFDataGetBytes(data,
::CFRangeMake(0, dataLength),
mCustomImageData);
mCustomImageDataLength = dataLength;
mType = TypeCustom;
}
::CFRelease(dest);
}
::CFRelease(data);
}
::CGImageRelease(image);
}
::CGContextRelease(context);
}
::CGColorSpaceRelease(color);
}
}
moz_free(bitmap);
}
NSCursorInfo::~NSCursorInfo()
{
if (mCustomImageData) {
moz_free(mCustomImageData);
}
}
NSCursor* NSCursorInfo::GetNSCursor() const
{
NSCursor* retval = nil;
Class nsCursorClass = [NSCursor class];
switch(mType) {
case TypeArrow:
retval = [NSCursor arrowCursor];
break;
case TypeClosedHand:
retval = [NSCursor closedHandCursor];
break;
case TypeCrosshair:
retval = [NSCursor crosshairCursor];
break;
case TypeDisappearingItem:
retval = [NSCursor disappearingItemCursor];
break;
case TypeIBeam:
retval = [NSCursor IBeamCursor];
break;
case TypeOpenHand:
retval = [NSCursor openHandCursor];
break;
case TypePointingHand:
retval = [NSCursor pointingHandCursor];
break;
case TypeResizeDown:
retval = [NSCursor resizeDownCursor];
break;
case TypeResizeLeft:
retval = [NSCursor resizeLeftCursor];
break;
case TypeResizeLeftRight:
retval = [NSCursor resizeLeftRightCursor];
break;
case TypeResizeRight:
retval = [NSCursor resizeRightCursor];
break;
case TypeResizeUp:
retval = [NSCursor resizeUpCursor];
break;
case TypeResizeUpDown:
retval = [NSCursor resizeUpDownCursor];
break;
// The following four cursor types are only supported on OS X 10.6 and up.
case TypeContextualMenu: {
if ([nsCursorClass respondsToSelector:@selector(contextualMenuCursor)]) {
retval = [nsCursorClass performSelector:@selector(contextualMenuCursor)];
}
break;
}
case TypeDragCopy: {
if ([nsCursorClass respondsToSelector:@selector(dragCopyCursor)]) {
retval = [nsCursorClass performSelector:@selector(dragCopyCursor)];
}
break;
}
case TypeDragLink: {
if ([nsCursorClass respondsToSelector:@selector(dragLinkCursor)]) {
retval = [nsCursorClass performSelector:@selector(dragLinkCursor)];
}
break;
}
case TypeNotAllowed: {
if ([nsCursorClass respondsToSelector:@selector(operationNotAllowedCursor)]) {
retval = [nsCursorClass performSelector:@selector(operationNotAllowedCursor)];
}
break;
}
case TypeTransparent:
retval = GetTransparentCursor();
break;
default:
break;
}
if (!retval && mCustomImageData && mCustomImageDataLength) {
CGDataProviderRef provider = ::CGDataProviderCreateWithData(NULL,
(const void*)mCustomImageData,
mCustomImageDataLength,
NULL);
if (provider) {
CGImageRef cgImage = ::CGImageCreateWithPNGDataProvider(provider,
NULL,
false,
kCGRenderingIntentDefault);
if (cgImage) {
NSBitmapImageRep* rep = [[NSBitmapImageRep alloc] initWithCGImage:cgImage];
if (rep) {
NSImage* image = [[NSImage alloc] init];
if (image) {
[image addRepresentation:rep];
retval = [[[NSCursor alloc] initWithImage:image
hotSpot:NSMakePoint(mHotSpot.x, mHotSpot.y)]
autorelease];
[image release];
}
[rep release];
}
::CGImageRelease(cgImage);
}
::CFRelease(provider);
}
}
// Fall back to an arrow cursor if need be.
if (!retval) {
retval = [NSCursor arrowCursor];
}
return retval;
}
// Get a transparent cursor with the appropriate hot spot. We need one if
// (for example) we have a custom cursor with no image data.
NSCursor* NSCursorInfo::GetTransparentCursor() const
{
NSCursor* retval = nil;
int width = 16, height = 16;
int bytesPerPixel = 2;
int rowBytes = width * bytesPerPixel;
int dataSize = height * rowBytes;
uint8_t* data = (uint8_t*) moz_xmalloc(dataSize);
for (int y = 0; y < height; ++y) {
for (int x = 0; x < width; ++x) {
int offset = (y * rowBytes) + (x * bytesPerPixel);
data[offset] = 0x7E; // Arbitrary gray-scale value
data[offset + 1] = 0; // Alpha value to make us transparent
}
}
NSBitmapImageRep* imageRep =
[[[NSBitmapImageRep alloc] initWithBitmapDataPlanes:nil
pixelsWide:width
pixelsHigh:height
bitsPerSample:8
samplesPerPixel:2
hasAlpha:YES
isPlanar:NO
colorSpaceName:NSCalibratedWhiteColorSpace
bytesPerRow:rowBytes
bitsPerPixel:16]
autorelease];
if (imageRep) {
uint8_t* repDataPtr = [imageRep bitmapData];
if (repDataPtr) {
memcpy(repDataPtr, data, dataSize);
NSImage *image =
[[[NSImage alloc] initWithSize:NSMakeSize(width, height)]
autorelease];
if (image) {
[image addRepresentation:imageRep];
retval =
[[[NSCursor alloc] initWithImage:image
hotSpot:NSMakePoint(mHotSpot.x, mHotSpot.y)]
autorelease];
}
}
}
moz_free(data);
// Fall back to an arrow cursor if (for some reason) the above code failed.
if (!retval) {
retval = [NSCursor arrowCursor];
}
return retval;
}
NSCursorInfo::Type NSCursorInfo::GetType() const
{
return mType;
}
const char* NSCursorInfo::GetTypeName() const
{
switch(mType) {
case TypeCustom:
return "TypeCustom";
case TypeArrow:
return "TypeArrow";
case TypeClosedHand:
return "TypeClosedHand";
case TypeContextualMenu:
return "TypeContextualMenu";
case TypeCrosshair:
return "TypeCrosshair";
case TypeDisappearingItem:
return "TypeDisappearingItem";
case TypeDragCopy:
return "TypeDragCopy";
case TypeDragLink:
return "TypeDragLink";
case TypeIBeam:
return "TypeIBeam";
case TypeNotAllowed:
return "TypeNotAllowed";
case TypeOpenHand:
return "TypeOpenHand";
case TypePointingHand:
return "TypePointingHand";
case TypeResizeDown:
return "TypeResizeDown";
case TypeResizeLeft:
return "TypeResizeLeft";
case TypeResizeLeftRight:
return "TypeResizeLeftRight";
case TypeResizeRight:
return "TypeResizeRight";
case TypeResizeUp:
return "TypeResizeUp";
case TypeResizeUpDown:
return "TypeResizeUpDown";
case TypeTransparent:
return "TypeTransparent";
default:
break;
}
return "TypeUnknown";
}
nsPoint NSCursorInfo::GetHotSpot() const
{
return mHotSpot;
}
uint8_t* NSCursorInfo::GetCustomImageData() const
{
return mCustomImageData;
}
uint32_t NSCursorInfo::GetCustomImageDataLength() const
{
return mCustomImageDataLength;
}
void NSCursorInfo::SetType(Type aType)
{
mType = aType;
}
void NSCursorInfo::SetHotSpot(nsPoint aHotSpot)
{
mHotSpot = aHotSpot;
}
void NSCursorInfo::SetCustomImageData(uint8_t* aData, uint32_t aDataLength)
{
if (mCustomImageData) {
moz_free(mCustomImageData);
}
if (aDataLength) {
mCustomImageData = (uint8_t*) moz_xmalloc(aDataLength);
memcpy(mCustomImageData, aData, aDataLength);
} else {
mCustomImageData = NULL;
}
mCustomImageDataLength = aDataLength;
}
// This should never be called from the browser process -- only from the
// plugin process.
bool NSCursorInfo::GetNativeCursorsSupported()
{
if (mNativeCursorsSupported == -1) {
AssertPluginThread();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
bool result = pmc->GetNativeCursorsSupported();
if (result) {
mNativeCursorsSupported = 1;
} else {
mNativeCursorsSupported = 0;
}
}
}
return (mNativeCursorsSupported == 1);
}
} // namespace mac_plugin_interposing
namespace mac_plugin_interposing {
namespace parent {
// Tracks plugin windows currently visible.
std::set<uint32_t> plugin_visible_windows_set_;
// Tracks full screen windows currently visible.
std::set<uint32_t> plugin_fullscreen_windows_set_;
// Tracks modal windows currently visible.
std::set<uint32_t> plugin_modal_windows_set_;
void OnPluginShowWindow(uint32_t window_id,
CGRect window_bounds,
bool modal) {
plugin_visible_windows_set_.insert(window_id);
if (modal)
plugin_modal_windows_set_.insert(window_id);
CGRect main_display_bounds = ::CGDisplayBounds(CGMainDisplayID());
if (CGRectEqualToRect(window_bounds, main_display_bounds) &&
(plugin_fullscreen_windows_set_.find(window_id) ==
plugin_fullscreen_windows_set_.end())) {
plugin_fullscreen_windows_set_.insert(window_id);
nsCocoaUtils::HideOSChromeOnScreen(TRUE, [[NSScreen screens] objectAtIndex:0]);
}
}
static void ActivateProcess(pid_t pid) {
ProcessSerialNumber process;
OSStatus status = ::GetProcessForPID(pid, &process);
if (status == noErr) {
SetFrontProcess(&process);
} else {
NS_WARNING("Unable to get process for pid.");
}
}
// Must be called on the UI thread.
// If plugin_pid is -1, the browser will be the active process on return,
// otherwise that process will be given focus back before this function returns.
static void ReleasePluginFullScreen(pid_t plugin_pid) {
// Releasing full screen only works if we are the frontmost process; grab
// focus, but give it back to the plugin process if requested.
ActivateProcess(base::GetCurrentProcId());
nsCocoaUtils::HideOSChromeOnScreen(FALSE, [[NSScreen screens] objectAtIndex:0]);
if (plugin_pid != -1) {
ActivateProcess(plugin_pid);
}
}
void OnPluginHideWindow(uint32_t window_id, pid_t aPluginPid) {
bool had_windows = !plugin_visible_windows_set_.empty();
plugin_visible_windows_set_.erase(window_id);
bool browser_needs_activation = had_windows &&
plugin_visible_windows_set_.empty();
plugin_modal_windows_set_.erase(window_id);
if (plugin_fullscreen_windows_set_.find(window_id) !=
plugin_fullscreen_windows_set_.end()) {
plugin_fullscreen_windows_set_.erase(window_id);
pid_t plugin_pid = browser_needs_activation ? -1 : aPluginPid;
browser_needs_activation = false;
ReleasePluginFullScreen(plugin_pid);
}
if (browser_needs_activation) {
ActivateProcess(getpid());
}
}
void OnSetCursor(const NSCursorInfo& cursorInfo)
{
NSCursor* aCursor = cursorInfo.GetNSCursor();
if (aCursor) {
[aCursor set];
}
}
void OnShowCursor(bool show)
{
if (show) {
[NSCursor unhide];
} else {
[NSCursor hide];
}
}
void OnPushCursor(const NSCursorInfo& cursorInfo)
{
NSCursor* aCursor = cursorInfo.GetNSCursor();
if (aCursor) {
[aCursor push];
}
}
void OnPopCursor()
{
[NSCursor pop];
}
} // parent
} // namespace mac_plugin_interposing
namespace mac_plugin_interposing {
namespace child {
// TODO(stuartmorgan): Make this an IPC to order the plugin process above the
// browser process only if the browser is current frontmost.
void FocusPluginProcess() {
ProcessSerialNumber this_process, front_process;
if ((GetCurrentProcess(&this_process) != noErr) ||
(GetFrontProcess(&front_process) != noErr)) {
return;
}
Boolean matched = false;
if ((SameProcess(&this_process, &front_process, &matched) == noErr) &&
!matched) {
SetFrontProcess(&this_process);
}
}
void NotifyBrowserOfPluginShowWindow(uint32_t window_id, CGRect bounds,
bool modal) {
AssertPluginThread();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc)
pmc->PluginShowWindow(window_id, modal, bounds);
}
void NotifyBrowserOfPluginHideWindow(uint32_t window_id, CGRect bounds) {
AssertPluginThread();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc)
pmc->PluginHideWindow(window_id);
}
void NotifyBrowserOfSetCursor(NSCursorInfo& aCursorInfo)
{
AssertPluginThread();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->SetCursor(aCursorInfo);
}
}
void NotifyBrowserOfShowCursor(bool show)
{
AssertPluginThread();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->ShowCursor(show);
}
}
void NotifyBrowserOfPushCursor(NSCursorInfo& aCursorInfo)
{
AssertPluginThread();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->PushCursor(aCursorInfo);
}
}
void NotifyBrowserOfPopCursor()
{
AssertPluginThread();
PluginModuleChild *pmc = PluginModuleChild::GetChrome();
if (pmc) {
pmc->PopCursor();
}
}
struct WindowInfo {
uint32_t window_id;
CGRect bounds;
explicit WindowInfo(NSWindow* aWindow) {
NSInteger window_num = [aWindow windowNumber];
window_id = window_num > 0 ? window_num : 0;
bounds = NSRectToCGRect([aWindow frame]);
}
};
static void OnPluginWindowClosed(const WindowInfo& window_info) {
if (window_info.window_id == 0)
return;
mac_plugin_interposing::child::NotifyBrowserOfPluginHideWindow(window_info.window_id,
window_info.bounds);
}
static void OnPluginWindowShown(const WindowInfo& window_info, BOOL is_modal) {
// The window id is 0 if it has never been shown (including while it is the
// process of being shown for the first time); when that happens, we'll catch
// it in _setWindowNumber instead.
static BOOL s_pending_display_is_modal = NO;
if (window_info.window_id == 0) {
if (is_modal)
s_pending_display_is_modal = YES;
return;
}
if (s_pending_display_is_modal) {
is_modal = YES;
s_pending_display_is_modal = NO;
}
mac_plugin_interposing::child::NotifyBrowserOfPluginShowWindow(
window_info.window_id, window_info.bounds, is_modal);
}
static BOOL OnSetCursor(NSCursorInfo &aInfo)
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfSetCursor(aInfo);
return YES;
}
return NO;
}
static BOOL OnHideCursor()
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfShowCursor(NO);
return YES;
}
return NO;
}
static BOOL OnUnhideCursor()
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfShowCursor(YES);
return YES;
}
return NO;
}
static BOOL OnPushCursor(NSCursorInfo &aInfo)
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfPushCursor(aInfo);
return YES;
}
return NO;
}
static BOOL OnPopCursor()
{
if (NSCursorInfo::GetNativeCursorsSupported()) {
NotifyBrowserOfPopCursor();
return YES;
}
return NO;
}
} // child
} // namespace mac_plugin_interposing
using namespace mac_plugin_interposing::child;
@interface NSWindow (PluginInterposing)
- (void)pluginInterpose_orderOut:(id)sender;
- (void)pluginInterpose_orderFront:(id)sender;
- (void)pluginInterpose_makeKeyAndOrderFront:(id)sender;
- (void)pluginInterpose_setWindowNumber:(NSInteger)num;
@end
@implementation NSWindow (PluginInterposing)
- (void)pluginInterpose_orderOut:(id)sender {
WindowInfo window_info(self);
[self pluginInterpose_orderOut:sender];
OnPluginWindowClosed(window_info);
}
- (void)pluginInterpose_orderFront:(id)sender {
mac_plugin_interposing::child::FocusPluginProcess();
[self pluginInterpose_orderFront:sender];
OnPluginWindowShown(WindowInfo(self), NO);
}
- (void)pluginInterpose_makeKeyAndOrderFront:(id)sender {
mac_plugin_interposing::child::FocusPluginProcess();
[self pluginInterpose_makeKeyAndOrderFront:sender];
OnPluginWindowShown(WindowInfo(self), NO);
}
- (void)pluginInterpose_setWindowNumber:(NSInteger)num {
if (num > 0)
mac_plugin_interposing::child::FocusPluginProcess();
[self pluginInterpose_setWindowNumber:num];
if (num > 0)
OnPluginWindowShown(WindowInfo(self), NO);
}
@end
@interface NSApplication (PluginInterposing)
- (NSInteger)pluginInterpose_runModalForWindow:(NSWindow*)window;
@end
@implementation NSApplication (PluginInterposing)
- (NSInteger)pluginInterpose_runModalForWindow:(NSWindow*)window {
mac_plugin_interposing::child::FocusPluginProcess();
// This is out-of-order relative to the other calls, but runModalForWindow:
// won't return until the window closes, and the order only matters for
// full-screen windows.
OnPluginWindowShown(WindowInfo(window), YES);
return [self pluginInterpose_runModalForWindow:window];
}
@end
// Hook commands to manipulate the current cursor, so that they can be passed
// from the child process to the parent process. These commands have no
// effect unless they're performed in the parent process.
@interface NSCursor (PluginInterposing)
- (void)pluginInterpose_set;
- (void)pluginInterpose_push;
- (void)pluginInterpose_pop;
+ (NSCursor*)pluginInterpose_currentCursor;
+ (void)pluginInterpose_hide;
+ (void)pluginInterpose_unhide;
+ (void)pluginInterpose_pop;
@end
// Cache the results of [NSCursor set], [NSCursor push] and [NSCursor pop].
// The last element is always the current cursor.
static NSMutableArray* gCursorStack = nil;
static BOOL initCursorStack()
{
if (!gCursorStack) {
gCursorStack = [[NSMutableArray arrayWithCapacity:5] retain];
}
return (gCursorStack != NULL);
}
static NSCursor* currentCursorFromCache()
{
if (!initCursorStack())
return nil;
return (NSCursor*) [gCursorStack lastObject];
}
static void setCursorInCache(NSCursor* aCursor)
{
if (!initCursorStack() || !aCursor)
return;
NSUInteger count = [gCursorStack count];
if (count) {
[gCursorStack replaceObjectAtIndex:count - 1 withObject:aCursor];
} else {
[gCursorStack addObject:aCursor];
}
}
static void pushCursorInCache(NSCursor* aCursor)
{
if (!initCursorStack() || !aCursor)
return;
[gCursorStack addObject:aCursor];
}
static void popCursorInCache()
{
if (!initCursorStack())
return;
// Apple's doc on the +[NSCursor pop] method says: "If the current cursor
// is the only cursor on the stack, this method does nothing."
if ([gCursorStack count] > 1) {
[gCursorStack removeLastObject];
}
}
@implementation NSCursor (PluginInterposing)
- (void)pluginInterpose_set
{
NSCursorInfo info(self);
OnSetCursor(info);
setCursorInCache(self);
[self pluginInterpose_set];
}
- (void)pluginInterpose_push
{
NSCursorInfo info(self);
OnPushCursor(info);
pushCursorInCache(self);
[self pluginInterpose_push];
}
- (void)pluginInterpose_pop
{
OnPopCursor();
popCursorInCache();
[self pluginInterpose_pop];
}
// The currentCursor method always returns nil when running in a background
// process. But this may confuse plugins (notably Flash, see bug 621117). So
// if we get a nil return from the "call to super", we return a cursor that's
// been cached by previous calls to set or push. According to Apple's docs,
// currentCursor "only returns the cursor set by your application using
// NSCursor methods". So we don't need to worry about changes to the cursor
// made by other methods like SetThemeCursor().
+ (NSCursor*)pluginInterpose_currentCursor
{
NSCursor* retval = [self pluginInterpose_currentCursor];
if (!retval) {
retval = currentCursorFromCache();
}
return retval;
}
+ (void)pluginInterpose_hide
{
OnHideCursor();
[self pluginInterpose_hide];
}
+ (void)pluginInterpose_unhide
{
OnUnhideCursor();
[self pluginInterpose_unhide];
}
+ (void)pluginInterpose_pop
{
OnPopCursor();
popCursorInCache();
[self pluginInterpose_pop];
}
@end
static void ExchangeMethods(Class target_class,
BOOL class_method,
SEL original,
SEL replacement) {
Method m1;
Method m2;
if (class_method) {
m1 = class_getClassMethod(target_class, original);
m2 = class_getClassMethod(target_class, replacement);
} else {
m1 = class_getInstanceMethod(target_class, original);
m2 = class_getInstanceMethod(target_class, replacement);
}
if (m1 == m2)
return;
if (m1 && m2)
method_exchangeImplementations(m1, m2);
else
NS_NOTREACHED("Cocoa swizzling failed");
}
namespace mac_plugin_interposing {
namespace child {
void SetUpCocoaInterposing() {
Class nswindow_class = [NSWindow class];
ExchangeMethods(nswindow_class, NO, @selector(orderOut:),
@selector(pluginInterpose_orderOut:));
ExchangeMethods(nswindow_class, NO, @selector(orderFront:),
@selector(pluginInterpose_orderFront:));
ExchangeMethods(nswindow_class, NO, @selector(makeKeyAndOrderFront:),
@selector(pluginInterpose_makeKeyAndOrderFront:));
ExchangeMethods(nswindow_class, NO, @selector(_setWindowNumber:),
@selector(pluginInterpose_setWindowNumber:));
ExchangeMethods([NSApplication class], NO, @selector(runModalForWindow:),
@selector(pluginInterpose_runModalForWindow:));
Class nscursor_class = [NSCursor class];
ExchangeMethods(nscursor_class, NO, @selector(set),
@selector(pluginInterpose_set));
ExchangeMethods(nscursor_class, NO, @selector(push),
@selector(pluginInterpose_push));
ExchangeMethods(nscursor_class, NO, @selector(pop),
@selector(pluginInterpose_pop));
ExchangeMethods(nscursor_class, YES, @selector(currentCursor),
@selector(pluginInterpose_currentCursor));
ExchangeMethods(nscursor_class, YES, @selector(hide),
@selector(pluginInterpose_hide));
ExchangeMethods(nscursor_class, YES, @selector(unhide),
@selector(pluginInterpose_unhide));
ExchangeMethods(nscursor_class, YES, @selector(pop),
@selector(pluginInterpose_pop));
}
} // namespace child
} // namespace mac_plugin_interposing
// Called from plugin_child_interpose.mm, which hooks calls to
// SetCursor() (the QuickDraw call) from the plugin child process.
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnSetCursor(const Cursor* cursor)
{
NSCursorInfo info(cursor);
return OnSetCursor(info);
}
// Called from plugin_child_interpose.mm, which hooks calls to
// SetThemeCursor() (the Appearance Manager call) from the plugin child
// process.
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnSetThemeCursor(ThemeCursor cursor)
{
NSCursorInfo info;
switch (cursor) {
case kThemeArrowCursor:
info.SetType(NSCursorInfo::TypeArrow);
break;
case kThemeCopyArrowCursor:
info.SetType(NSCursorInfo::TypeDragCopy);
break;
case kThemeAliasArrowCursor:
info.SetType(NSCursorInfo::TypeDragLink);
break;
case kThemeContextualMenuArrowCursor:
info.SetType(NSCursorInfo::TypeContextualMenu);
break;
case kThemeIBeamCursor:
info.SetType(NSCursorInfo::TypeIBeam);
break;
case kThemeCrossCursor:
case kThemePlusCursor:
info.SetType(NSCursorInfo::TypeCrosshair);
break;
case kThemeWatchCursor:
case kThemeSpinningCursor:
info.SetType(NSCursorInfo::TypeArrow);
break;
case kThemeClosedHandCursor:
info.SetType(NSCursorInfo::TypeClosedHand);
break;
case kThemeOpenHandCursor:
info.SetType(NSCursorInfo::TypeOpenHand);
break;
case kThemePointingHandCursor:
case kThemeCountingUpHandCursor:
case kThemeCountingDownHandCursor:
case kThemeCountingUpAndDownHandCursor:
info.SetType(NSCursorInfo::TypePointingHand);
break;
case kThemeResizeLeftCursor:
info.SetType(NSCursorInfo::TypeResizeLeft);
break;
case kThemeResizeRightCursor:
info.SetType(NSCursorInfo::TypeResizeRight);
break;
case kThemeResizeLeftRightCursor:
info.SetType(NSCursorInfo::TypeResizeLeftRight);
break;
case kThemeNotAllowedCursor:
info.SetType(NSCursorInfo::TypeNotAllowed);
break;
case kThemeResizeUpCursor:
info.SetType(NSCursorInfo::TypeResizeUp);
break;
case kThemeResizeDownCursor:
info.SetType(NSCursorInfo::TypeResizeDown);
break;
case kThemeResizeUpDownCursor:
info.SetType(NSCursorInfo::TypeResizeUpDown);
break;
case kThemePoofCursor:
info.SetType(NSCursorInfo::TypeDisappearingItem);
break;
default:
info.SetType(NSCursorInfo::TypeArrow);
break;
}
return OnSetCursor(info);
}
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnHideCursor()
{
return OnHideCursor();
}
extern "C" NS_VISIBILITY_DEFAULT BOOL
mac_plugin_interposing_child_OnShowCursor()
{
return OnUnhideCursor();
}
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