зеркало из https://github.com/mozilla/gecko-dev.git
888 строки
31 KiB
Plaintext
888 строки
31 KiB
Plaintext
/* -*- Mode: c++; tab-width: 2; indent-tabs-mode: nil; -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* Runs the main native Cocoa run loop, interrupting it as needed to process
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* Gecko events.
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*/
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#import <Cocoa/Cocoa.h>
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#include "CustomCocoaEvents.h"
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#include "mozilla/WidgetTraceEvent.h"
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#include "nsAppShell.h"
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#include "nsCOMPtr.h"
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#include "nsIFile.h"
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#include "nsDirectoryServiceDefs.h"
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#include "nsString.h"
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#include "nsIRollupListener.h"
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#include "nsIWidget.h"
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#include "nsThreadUtils.h"
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#include "nsIWindowMediator.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIWebBrowserChrome.h"
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#include "nsObjCExceptions.h"
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#include "nsCocoaFeatures.h"
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#include "nsCocoaUtils.h"
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#include "nsChildView.h"
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#include "nsToolkit.h"
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#include "TextInputHandler.h"
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#include "mozilla/HangMonitor.h"
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#include "GeckoProfiler.h"
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#include "pratom.h"
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#include <IOKit/pwr_mgt/IOPMLib.h>
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#include "nsIDOMWakeLockListener.h"
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#include "nsIPowerManagerService.h"
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using namespace mozilla::widget;
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// A wake lock listener that disables screen saver when requested by
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// Gecko. For example when we're playing video in a foreground tab we
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// don't want the screen saver to turn on.
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class MacWakeLockListener MOZ_FINAL : public nsIDOMMozWakeLockListener {
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public:
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NS_DECL_ISUPPORTS;
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private:
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~MacWakeLockListener() {}
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IOPMAssertionID mAssertionID = kIOPMNullAssertionID;
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NS_IMETHOD Callback(const nsAString& aTopic, const nsAString& aState) MOZ_OVERRIDE {
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if (!aTopic.EqualsASCII("screen")) {
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return NS_OK;
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}
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// Note the wake lock code ensures that we're not sent duplicate
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// "locked-foreground" notifications when multiple wake locks are held.
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if (aState.EqualsASCII("locked-foreground")) {
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// Prevent screen saver.
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CFStringRef cf_topic =
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::CFStringCreateWithCharacters(kCFAllocatorDefault,
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reinterpret_cast<const UniChar*>
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(aTopic.Data()),
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aTopic.Length());
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IOReturn success =
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::IOPMAssertionCreateWithName(kIOPMAssertionTypeNoDisplaySleep,
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kIOPMAssertionLevelOn,
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cf_topic,
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&mAssertionID);
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CFRelease(cf_topic);
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if (success != kIOReturnSuccess) {
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NS_WARNING("failed to disable screensaver");
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}
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} else {
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// Re-enable screen saver.
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NS_WARNING("Releasing screensaver");
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if (mAssertionID != kIOPMNullAssertionID) {
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IOReturn result = ::IOPMAssertionRelease(mAssertionID);
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if (result != kIOReturnSuccess) {
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NS_WARNING("failed to release screensaver");
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}
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}
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}
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return NS_OK;
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}
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}; // MacWakeLockListener
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// defined in nsCocoaWindow.mm
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extern int32_t gXULModalLevel;
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static bool gAppShellMethodsSwizzled = false;
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@implementation GeckoNSApplication
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- (void)sendEvent:(NSEvent *)anEvent
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{
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mozilla::HangMonitor::NotifyActivity();
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if ([anEvent type] == NSApplicationDefined &&
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[anEvent subtype] == kEventSubtypeTrace) {
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mozilla::SignalTracerThread();
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return;
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}
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[super sendEvent:anEvent];
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}
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- (NSEvent*)nextEventMatchingMask:(NSUInteger)mask
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untilDate:(NSDate*)expiration
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inMode:(NSString*)mode
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dequeue:(BOOL)flag
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{
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if (expiration) {
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mozilla::HangMonitor::Suspend();
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}
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return [super nextEventMatchingMask:mask
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untilDate:expiration inMode:mode dequeue:flag];
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}
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@end
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// AppShellDelegate
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//
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// Cocoa bridge class. An object of this class is registered to receive
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// notifications.
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//
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@interface AppShellDelegate : NSObject
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{
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@private
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nsAppShell* mAppShell;
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}
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- (id)initWithAppShell:(nsAppShell*)aAppShell;
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- (void)applicationWillTerminate:(NSNotification*)aNotification;
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- (void)beginMenuTracking:(NSNotification*)aNotification;
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@end
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// nsAppShell implementation
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NS_IMETHODIMP
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nsAppShell::ResumeNative(void)
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{
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nsresult retval = nsBaseAppShell::ResumeNative();
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if (NS_SUCCEEDED(retval) && (mSuspendNativeCount == 0) &&
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mSkippedNativeCallback)
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{
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mSkippedNativeCallback = false;
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ScheduleNativeEventCallback();
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}
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return retval;
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}
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nsAppShell::nsAppShell()
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: mAutoreleasePools(nullptr)
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, mDelegate(nullptr)
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, mCFRunLoop(NULL)
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, mCFRunLoopSource(NULL)
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, mRunningEventLoop(false)
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, mStarted(false)
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, mTerminated(false)
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, mSkippedNativeCallback(false)
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, mNativeEventCallbackDepth(0)
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, mNativeEventScheduledDepth(0)
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{
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// A Cocoa event loop is running here if (and only if) we've been embedded
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// by a Cocoa app.
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mRunningCocoaEmbedded = [NSApp isRunning] ? true : false;
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}
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nsAppShell::~nsAppShell()
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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if (mCFRunLoop) {
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if (mCFRunLoopSource) {
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::CFRunLoopRemoveSource(mCFRunLoop, mCFRunLoopSource,
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kCFRunLoopCommonModes);
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::CFRelease(mCFRunLoopSource);
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}
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::CFRelease(mCFRunLoop);
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}
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if (mAutoreleasePools) {
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NS_ASSERTION(::CFArrayGetCount(mAutoreleasePools) == 0,
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"nsAppShell destroyed without popping all autorelease pools");
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::CFRelease(mAutoreleasePools);
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}
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[mDelegate release];
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NS_OBJC_END_TRY_ABORT_BLOCK
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}
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NS_IMPL_ISUPPORTS(MacWakeLockListener, nsIDOMMozWakeLockListener)
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mozilla::StaticRefPtr<MacWakeLockListener> sWakeLockListener;
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static void
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AddScreenWakeLockListener()
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{
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nsCOMPtr<nsIPowerManagerService> sPowerManagerService = do_GetService(
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POWERMANAGERSERVICE_CONTRACTID);
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if (sPowerManagerService) {
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sWakeLockListener = new MacWakeLockListener();
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sPowerManagerService->AddWakeLockListener(sWakeLockListener);
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} else {
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NS_WARNING("Failed to retrieve PowerManagerService, wakelocks will be broken!");
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}
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}
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static void
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RemoveScreenWakeLockListener()
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{
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nsCOMPtr<nsIPowerManagerService> sPowerManagerService = do_GetService(
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POWERMANAGERSERVICE_CONTRACTID);
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if (sPowerManagerService) {
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sPowerManagerService->RemoveWakeLockListener(sWakeLockListener);
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sPowerManagerService = nullptr;
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sWakeLockListener = nullptr;
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}
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}
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// An undocumented CoreGraphics framework method, present in the same form
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// since at least OS X 10.5.
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extern "C" CGError CGSSetDebugOptions(int options);
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// Init
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//
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// Loads the nib (see bug 316076c21) and sets up the CFRunLoopSource used to
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// interrupt the main native run loop.
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//
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// public
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nsresult
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nsAppShell::Init()
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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// No event loop is running yet (unless an embedding app that uses
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// NSApplicationMain() is running).
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NSAutoreleasePool* localPool = [[NSAutoreleasePool alloc] init];
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// mAutoreleasePools is used as a stack of NSAutoreleasePool objects created
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// by |this|. CFArray is used instead of NSArray because NSArray wants to
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// retain each object you add to it, and you can't retain an
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// NSAutoreleasePool.
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mAutoreleasePools = ::CFArrayCreateMutable(nullptr, 0, nullptr);
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NS_ENSURE_STATE(mAutoreleasePools);
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// Get the path of the nib file, which lives in the GRE location
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nsCOMPtr<nsIFile> nibFile;
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nsresult rv = NS_GetSpecialDirectory(NS_GRE_DIR, getter_AddRefs(nibFile));
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NS_ENSURE_SUCCESS(rv, rv);
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nibFile->AppendNative(NS_LITERAL_CSTRING("res"));
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nibFile->AppendNative(NS_LITERAL_CSTRING("MainMenu.nib"));
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nsAutoCString nibPath;
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rv = nibFile->GetNativePath(nibPath);
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NS_ENSURE_SUCCESS(rv, rv);
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// This call initializes NSApplication unless:
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// 1) we're using xre -- NSApp's already been initialized by
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// MacApplicationDelegate.mm's EnsureUseCocoaDockAPI().
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// 2) an embedding app that uses NSApplicationMain() is running -- NSApp's
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// already been initialized and its main run loop is already running.
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[NSBundle loadNibFile:
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[NSString stringWithUTF8String:(const char*)nibPath.get()]
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externalNameTable:
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[NSDictionary dictionaryWithObject:[GeckoNSApplication sharedApplication]
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forKey:@"NSOwner"]
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withZone:NSDefaultMallocZone()];
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mDelegate = [[AppShellDelegate alloc] initWithAppShell:this];
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NS_ENSURE_STATE(mDelegate);
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// Add a CFRunLoopSource to the main native run loop. The source is
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// responsible for interrupting the run loop when Gecko events are ready.
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mCFRunLoop = [[NSRunLoop currentRunLoop] getCFRunLoop];
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NS_ENSURE_STATE(mCFRunLoop);
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::CFRetain(mCFRunLoop);
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CFRunLoopSourceContext context;
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bzero(&context, sizeof(context));
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// context.version = 0;
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context.info = this;
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context.perform = ProcessGeckoEvents;
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mCFRunLoopSource = ::CFRunLoopSourceCreate(kCFAllocatorDefault, 0, &context);
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NS_ENSURE_STATE(mCFRunLoopSource);
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::CFRunLoopAddSource(mCFRunLoop, mCFRunLoopSource, kCFRunLoopCommonModes);
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rv = nsBaseAppShell::Init();
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if (!gAppShellMethodsSwizzled) {
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// We should only replace the original terminate: method if we're not
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// running in a Cocoa embedder. See bug 604901.
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if (!mRunningCocoaEmbedded) {
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nsToolkit::SwizzleMethods([NSApplication class], @selector(terminate:),
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@selector(nsAppShell_NSApplication_terminate:));
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}
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gAppShellMethodsSwizzled = true;
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}
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if (nsCocoaFeatures::OnYosemiteOrLater()) {
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// Explicitly turn off CGEvent logging. This works around bug 1092855.
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// If there are already CGEvents in the log, turning off logging also
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// causes those events to be written to disk. But at this point no
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// CGEvents have yet been processed. CGEvents are events (usually
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// input events) pulled from the WindowServer. An option of 0x80000008
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// turns on CGEvent logging.
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CGSSetDebugOptions(0x80000007);
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}
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[localPool release];
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return rv;
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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// ProcessGeckoEvents
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//
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// The "perform" target of mCFRunLoop, called when mCFRunLoopSource is
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// signalled from ScheduleNativeEventCallback.
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//
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// Arrange for Gecko events to be processed on demand (in response to a call
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// to ScheduleNativeEventCallback(), if processing of Gecko events via "native
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// methods" hasn't been suspended). This happens in NativeEventCallback().
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//
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// protected static
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void
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nsAppShell::ProcessGeckoEvents(void* aInfo)
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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PROFILER_LABEL("Events", "ProcessGeckoEvents",
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js::ProfileEntry::Category::EVENTS);
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nsAppShell* self = static_cast<nsAppShell*> (aInfo);
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if (self->mRunningEventLoop) {
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self->mRunningEventLoop = false;
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// The run loop may be sleeping -- [NSRunLoop runMode:...]
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// won't return until it's given a reason to wake up. Awaken it by
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// posting a bogus event. There's no need to make the event
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// presentable.
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//
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// But _don't_ set windowNumber to '-1' -- that can lead to nasty
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// wierdness like bmo bug 397039 (a crash in [NSApp sendEvent:] on one of
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// these fake events, because the -1 has gotten changed into the number
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// of an actual NSWindow object, and that NSWindow object has just been
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// destroyed). Setting windowNumber to '0' seems to work fine -- this
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// seems to prevent the OS from ever trying to associate our bogus event
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// with a particular NSWindow object.
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[NSApp postEvent:[NSEvent otherEventWithType:NSApplicationDefined
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location:NSMakePoint(0,0)
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modifierFlags:0
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timestamp:0
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windowNumber:0
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context:NULL
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subtype:kEventSubtypeNone
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data1:0
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data2:0]
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atStart:NO];
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}
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if (self->mSuspendNativeCount <= 0) {
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++self->mNativeEventCallbackDepth;
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self->NativeEventCallback();
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--self->mNativeEventCallbackDepth;
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} else {
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self->mSkippedNativeCallback = true;
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}
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// Still needed to avoid crashes on quit in most Mochitests.
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[NSApp postEvent:[NSEvent otherEventWithType:NSApplicationDefined
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location:NSMakePoint(0,0)
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modifierFlags:0
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timestamp:0
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windowNumber:0
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context:NULL
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subtype:kEventSubtypeNone
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data1:0
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data2:0]
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atStart:NO];
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// Normally every call to ScheduleNativeEventCallback() results in
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// exactly one call to ProcessGeckoEvents(). So each Release() here
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// normally balances exactly one AddRef() in ScheduleNativeEventCallback().
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// But if Exit() is called just after ScheduleNativeEventCallback(), the
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// corresponding call to ProcessGeckoEvents() will never happen. We check
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// for this possibility in two different places -- here and in Exit()
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// itself. If we find here that Exit() has been called (that mTerminated
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// is true), it's because we've been called recursively, that Exit() was
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// called from self->NativeEventCallback() above, and that we're unwinding
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// the recursion. In this case we'll never be called again, and we balance
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// here any extra calls to ScheduleNativeEventCallback().
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//
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// When ProcessGeckoEvents() is called recursively, it's because of a
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// call to ScheduleNativeEventCallback() from NativeEventCallback(). We
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// balance the "extra" AddRefs here (rather than always in Exit()) in order
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// to ensure that 'self' stays alive until the end of this method. We also
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// make sure not to finish the balancing until all the recursion has been
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// unwound.
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if (self->mTerminated) {
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int32_t releaseCount = 0;
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if (self->mNativeEventScheduledDepth > self->mNativeEventCallbackDepth) {
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releaseCount = PR_ATOMIC_SET(&self->mNativeEventScheduledDepth,
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self->mNativeEventCallbackDepth);
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}
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while (releaseCount-- > self->mNativeEventCallbackDepth)
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self->Release();
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} else {
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// As best we can tell, every call to ProcessGeckoEvents() is triggered
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// by a call to ScheduleNativeEventCallback(). But we've seen a few
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// (non-reproducible) cases of double-frees that *might* have been caused
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// by spontaneous calls (from the OS) to ProcessGeckoEvents(). So we
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// deal with that possibility here.
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if (PR_ATOMIC_DECREMENT(&self->mNativeEventScheduledDepth) < 0) {
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PR_ATOMIC_SET(&self->mNativeEventScheduledDepth, 0);
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NS_WARNING("Spontaneous call to ProcessGeckoEvents()!");
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} else {
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self->Release();
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}
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}
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NS_OBJC_END_TRY_ABORT_BLOCK;
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}
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// WillTerminate
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//
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// Called by the AppShellDelegate when an NSApplicationWillTerminate
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// notification is posted. After this method is called, native events should
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// no longer be processed. The NSApplicationWillTerminate notification is
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// only posted when [NSApp terminate:] is called, which doesn't happen on a
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// "normal" application quit.
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//
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// public
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void
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nsAppShell::WillTerminate()
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{
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if (mTerminated)
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return;
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// Make sure that the nsAppExitEvent posted by nsAppStartup::Quit() (called
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// from [MacApplicationDelegate applicationShouldTerminate:]) gets run.
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NS_ProcessPendingEvents(NS_GetCurrentThread());
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mTerminated = true;
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}
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// ScheduleNativeEventCallback
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//
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// Called (possibly on a non-main thread) when Gecko has an event that
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// needs to be processed. The Gecko event needs to be processed on the
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// main thread, so the native run loop must be interrupted.
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//
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// In nsBaseAppShell.cpp, the mNativeEventPending variable is used to
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// ensure that ScheduleNativeEventCallback() is called no more than once
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// per call to NativeEventCallback(). ProcessGeckoEvents() can skip its
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// call to NativeEventCallback() if processing of Gecko events by native
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// means is suspended (using nsIAppShell::SuspendNative()), which will
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// suspend calls from nsBaseAppShell::OnDispatchedEvent() to
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// ScheduleNativeEventCallback(). But when Gecko event processing by
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// native means is resumed (in ResumeNative()), an extra call is made to
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// ScheduleNativeEventCallback() (from ResumeNative()). This triggers
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// another call to ProcessGeckoEvents(), which calls NativeEventCallback(),
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// and nsBaseAppShell::OnDispatchedEvent() resumes calling
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// ScheduleNativeEventCallback().
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//
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// protected virtual
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void
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nsAppShell::ScheduleNativeEventCallback()
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{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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if (mTerminated)
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return;
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// Each AddRef() here is normally balanced by exactly one Release() in
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// ProcessGeckoEvents(). But there are exceptions, for which see
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// ProcessGeckoEvents() and Exit().
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NS_ADDREF_THIS();
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PR_ATOMIC_INCREMENT(&mNativeEventScheduledDepth);
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// This will invoke ProcessGeckoEvents on the main thread.
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::CFRunLoopSourceSignal(mCFRunLoopSource);
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::CFRunLoopWakeUp(mCFRunLoop);
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NS_OBJC_END_TRY_ABORT_BLOCK;
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}
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// Undocumented Cocoa Event Manager function, present in the same form since
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// at least OS X 10.6.
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extern "C" EventAttributes GetEventAttributes(EventRef inEvent);
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// ProcessNextNativeEvent
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//
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// If aMayWait is false, process a single native event. If it is true, run
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// the native run loop until stopped by ProcessGeckoEvents.
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//
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// Returns true if more events are waiting in the native event queue.
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//
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// protected virtual
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bool
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nsAppShell::ProcessNextNativeEvent(bool aMayWait)
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{
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bool moreEvents = false;
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
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bool eventProcessed = false;
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NSString* currentMode = nil;
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if (mTerminated)
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return false;
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bool wasRunningEventLoop = mRunningEventLoop;
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mRunningEventLoop = aMayWait;
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NSDate* waitUntil = nil;
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if (aMayWait)
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waitUntil = [NSDate distantFuture];
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NSRunLoop* currentRunLoop = [NSRunLoop currentRunLoop];
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EventQueueRef currentEventQueue = GetCurrentEventQueue();
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EventTargetRef eventDispatcherTarget = GetEventDispatcherTarget();
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if (aMayWait) {
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mozilla::HangMonitor::Suspend();
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}
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// Only call -[NSApp sendEvent:] (and indirectly send user-input events to
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// Gecko) if aMayWait is true. Tbis ensures most calls to -[NSApp
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// sendEvent:] happen under nsAppShell::Run(), at the lowest level of
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// recursion -- thereby making it less likely Gecko will process user-input
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// events in the wrong order or skip some of them. It also avoids eating
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// too much CPU in nsBaseAppShell::OnProcessNextEvent() (which calls
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// us) -- thereby avoiding the starvation of nsIRunnable events in
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// nsThread::ProcessNextEvent(). For more information see bug 996848.
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do {
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// No autorelease pool is provided here, because OnProcessNextEvent
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// and AfterProcessNextEvent are responsible for maintaining it.
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NS_ASSERTION(mAutoreleasePools && ::CFArrayGetCount(mAutoreleasePools),
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"No autorelease pool for native event");
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if (aMayWait) {
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currentMode = [currentRunLoop currentMode];
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if (!currentMode)
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currentMode = NSDefaultRunLoopMode;
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NSEvent *nextEvent = [NSApp nextEventMatchingMask:NSAnyEventMask
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untilDate:waitUntil
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inMode:currentMode
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dequeue:YES];
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if (nextEvent) {
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mozilla::HangMonitor::NotifyActivity();
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[NSApp sendEvent:nextEvent];
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eventProcessed = true;
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}
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} else {
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// AcquireFirstMatchingEventInQueue() doesn't spin the (native) event
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// loop, though it does queue up any newly available events from the
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// window server.
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EventRef currentEvent = AcquireFirstMatchingEventInQueue(currentEventQueue, 0, NULL,
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kEventQueueOptionsNone);
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if (!currentEvent) {
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continue;
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}
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EventAttributes attrs = GetEventAttributes(currentEvent);
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UInt32 eventKind = GetEventKind(currentEvent);
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UInt32 eventClass = GetEventClass(currentEvent);
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bool osCocoaEvent =
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((eventClass == 'appl') || (eventClass == kEventClassAppleEvent) ||
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((eventClass == 'cgs ') && (eventKind != NSApplicationDefined)));
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// If attrs is kEventAttributeUserEvent or kEventAttributeMonitored
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// (i.e. a user input event), we shouldn't process it here while
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// aMayWait is false. Likewise if currentEvent will eventually be
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// turned into an OS-defined Cocoa event, or otherwise needs AppKit
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// processing. Doing otherwise risks doing too much work here, and
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// preventing the event from being properly processed by the AppKit
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// framework.
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if ((attrs != kEventAttributeNone) || osCocoaEvent) {
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// Since we can't process the next event here (while aMayWait is false),
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// we want moreEvents to be false on return.
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eventProcessed = false;
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// This call to ReleaseEvent() matches a call to RetainEvent() in
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// AcquireFirstMatchingEventInQueue() above.
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ReleaseEvent(currentEvent);
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break;
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}
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// This call to RetainEvent() matches a call to ReleaseEvent() in
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// RemoveEventFromQueue() below.
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RetainEvent(currentEvent);
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RemoveEventFromQueue(currentEventQueue, currentEvent);
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SendEventToEventTarget(currentEvent, eventDispatcherTarget);
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// This call to ReleaseEvent() matches a call to RetainEvent() in
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// AcquireFirstMatchingEventInQueue() above.
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ReleaseEvent(currentEvent);
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eventProcessed = true;
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}
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} while (mRunningEventLoop);
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if (eventProcessed) {
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moreEvents =
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(AcquireFirstMatchingEventInQueue(currentEventQueue, 0, NULL,
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kEventQueueOptionsNone) != NULL);
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}
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mRunningEventLoop = wasRunningEventLoop;
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NS_OBJC_END_TRY_ABORT_BLOCK;
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if (!moreEvents) {
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nsChildView::UpdateCurrentInputEventCount();
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}
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return moreEvents;
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}
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// Run
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//
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// Overrides the base class's Run() method to call [NSApp run] (which spins
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// the native run loop until the application quits). Since (unlike the base
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// class's Run() method) we don't process any Gecko events here, they need
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// to be processed elsewhere (in NativeEventCallback(), called from
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// ProcessGeckoEvents()).
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//
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// Camino called [NSApp run] on its own (via NSApplicationMain()), and so
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// didn't call nsAppShell::Run().
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//
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// public
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NS_IMETHODIMP
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nsAppShell::Run(void)
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|
{
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NS_ASSERTION(!mStarted, "nsAppShell::Run() called multiple times");
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if (mStarted || mTerminated)
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return NS_OK;
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mStarted = true;
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AddScreenWakeLockListener();
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NS_OBJC_TRY_ABORT([NSApp run]);
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RemoveScreenWakeLockListener();
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return NS_OK;
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}
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NS_IMETHODIMP
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nsAppShell::Exit(void)
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|
{
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NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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// This method is currently called more than once -- from (according to
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// mento) an nsAppExitEvent dispatched by nsAppStartup::Quit() and from an
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// XPCOM shutdown notification that nsBaseAppShell has registered to
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// receive. So we need to ensure that multiple calls won't break anything.
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// But we should also complain about it (since it isn't quite kosher).
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if (mTerminated) {
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NS_WARNING("nsAppShell::Exit() called redundantly");
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return NS_OK;
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}
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mTerminated = true;
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// Quoting from Apple's doc on the [NSApplication stop:] method (from their
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// doc on the NSApplication class): "If this method is invoked during a
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// modal event loop, it will break that loop but not the main event loop."
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// nsAppShell::Exit() shouldn't be called from a modal event loop. So if
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// it is we complain about it (to users of debug builds) and call [NSApp
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// stop:] one extra time. (I'm not sure if modal event loops can be nested
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// -- Apple's docs don't say one way or the other. But the return value
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// of [NSApp _isRunningModal] doesn't change immediately after a call to
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// [NSApp stop:], so we have to assume that one extra call to [NSApp stop:]
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// will do the job.)
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BOOL cocoaModal = [NSApp _isRunningModal];
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NS_ASSERTION(!cocoaModal,
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"Don't call nsAppShell::Exit() from a modal event loop!");
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if (cocoaModal)
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[NSApp stop:nullptr];
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[NSApp stop:nullptr];
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// A call to Exit() just after a call to ScheduleNativeEventCallback()
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// prevents the (normally) matching call to ProcessGeckoEvents() from
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// happening. If we've been called from ProcessGeckoEvents() (as usually
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// happens), we take care of it there. But if we have an unbalanced call
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// to ScheduleNativeEventCallback() and ProcessGeckoEvents() isn't on the
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// stack, we need to take care of the problem here.
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if (!mNativeEventCallbackDepth && mNativeEventScheduledDepth) {
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int32_t releaseCount = PR_ATOMIC_SET(&mNativeEventScheduledDepth, 0);
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while (releaseCount-- > 0)
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NS_RELEASE_THIS();
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}
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return nsBaseAppShell::Exit();
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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// OnProcessNextEvent
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//
|
|
// This nsIThreadObserver method is called prior to processing an event.
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// Set up an autorelease pool that will service any autoreleased Cocoa
|
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// objects during this event. This includes native events processed by
|
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// ProcessNextNativeEvent. The autorelease pool will be popped by
|
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// AfterProcessNextEvent, it is important for these two methods to be
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// tightly coupled.
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//
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// public
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NS_IMETHODIMP
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nsAppShell::OnProcessNextEvent(nsIThreadInternal *aThread, bool aMayWait,
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uint32_t aRecursionDepth)
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|
{
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|
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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NS_ASSERTION(mAutoreleasePools,
|
|
"No stack on which to store autorelease pool");
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NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
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::CFArrayAppendValue(mAutoreleasePools, pool);
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return nsBaseAppShell::OnProcessNextEvent(aThread, aMayWait, aRecursionDepth);
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
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// AfterProcessNextEvent
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//
|
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// This nsIThreadObserver method is called after event processing is complete.
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// The Cocoa implementation cleans up the autorelease pool create by the
|
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// previous OnProcessNextEvent call.
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//
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// public
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NS_IMETHODIMP
|
|
nsAppShell::AfterProcessNextEvent(nsIThreadInternal *aThread,
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uint32_t aRecursionDepth,
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bool aEventWasProcessed)
|
|
{
|
|
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT;
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|
|
CFIndex count = ::CFArrayGetCount(mAutoreleasePools);
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|
|
NS_ASSERTION(mAutoreleasePools && count,
|
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"Processed an event, but there's no autorelease pool?");
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|
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const NSAutoreleasePool* pool = static_cast<const NSAutoreleasePool*>
|
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(::CFArrayGetValueAtIndex(mAutoreleasePools, count - 1));
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|
::CFArrayRemoveValueAtIndex(mAutoreleasePools, count - 1);
|
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[pool release];
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return nsBaseAppShell::AfterProcessNextEvent(aThread, aRecursionDepth,
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aEventWasProcessed);
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|
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NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT;
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}
|
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|
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|
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// AppShellDelegate implementation
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|
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|
@implementation AppShellDelegate
|
|
// initWithAppShell:
|
|
//
|
|
// Constructs the AppShellDelegate object
|
|
- (id)initWithAppShell:(nsAppShell*)aAppShell
|
|
{
|
|
NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;
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|
if ((self = [self init])) {
|
|
mAppShell = aAppShell;
|
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|
|
[[NSNotificationCenter defaultCenter] addObserver:self
|
|
selector:@selector(applicationWillTerminate:)
|
|
name:NSApplicationWillTerminateNotification
|
|
object:NSApp];
|
|
[[NSNotificationCenter defaultCenter] addObserver:self
|
|
selector:@selector(applicationDidBecomeActive:)
|
|
name:NSApplicationDidBecomeActiveNotification
|
|
object:NSApp];
|
|
[[NSDistributedNotificationCenter defaultCenter] addObserver:self
|
|
selector:@selector(beginMenuTracking:)
|
|
name:@"com.apple.HIToolbox.beginMenuTrackingNotification"
|
|
object:nil];
|
|
}
|
|
|
|
return self;
|
|
|
|
NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
|
|
}
|
|
|
|
- (void)dealloc
|
|
{
|
|
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
|
|
|
|
[[NSNotificationCenter defaultCenter] removeObserver:self];
|
|
[[NSDistributedNotificationCenter defaultCenter] removeObserver:self];
|
|
[super dealloc];
|
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|
|
NS_OBJC_END_TRY_ABORT_BLOCK;
|
|
}
|
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|
|
// applicationWillTerminate:
|
|
//
|
|
// Notify the nsAppShell that native event processing should be discontinued.
|
|
- (void)applicationWillTerminate:(NSNotification*)aNotification
|
|
{
|
|
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
|
|
|
|
mAppShell->WillTerminate();
|
|
|
|
NS_OBJC_END_TRY_ABORT_BLOCK;
|
|
}
|
|
|
|
// applicationDidBecomeActive
|
|
//
|
|
// Make sure TextInputHandler::sLastModifierState is updated when we become
|
|
// active (since we won't have received [ChildView flagsChanged:] messages
|
|
// while inactive).
|
|
- (void)applicationDidBecomeActive:(NSNotification*)aNotification
|
|
{
|
|
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
|
|
|
|
// [NSEvent modifierFlags] is valid on every kind of event, so we don't need
|
|
// to worry about getting an NSInternalInconsistencyException here.
|
|
NSEvent* currentEvent = [NSApp currentEvent];
|
|
if (currentEvent) {
|
|
TextInputHandler::sLastModifierState =
|
|
[currentEvent modifierFlags] & NSDeviceIndependentModifierFlagsMask;
|
|
}
|
|
|
|
NS_OBJC_END_TRY_ABORT_BLOCK;
|
|
}
|
|
|
|
// beginMenuTracking
|
|
//
|
|
// Roll up our context menu (if any) when some other app (or the OS) opens
|
|
// any sort of menu. But make sure we don't do this for notifications we
|
|
// send ourselves (whose 'sender' will be @"org.mozilla.gecko.PopupWindow").
|
|
- (void)beginMenuTracking:(NSNotification*)aNotification
|
|
{
|
|
NS_OBJC_BEGIN_TRY_ABORT_BLOCK;
|
|
|
|
NSString *sender = [aNotification object];
|
|
if (!sender || ![sender isEqualToString:@"org.mozilla.gecko.PopupWindow"]) {
|
|
nsIRollupListener* rollupListener = nsBaseWidget::GetActiveRollupListener();
|
|
nsCOMPtr<nsIWidget> rollupWidget = rollupListener->GetRollupWidget();
|
|
if (rollupWidget)
|
|
rollupListener->Rollup(0, true, nullptr, nullptr);
|
|
}
|
|
|
|
NS_OBJC_END_TRY_ABORT_BLOCK;
|
|
}
|
|
|
|
@end
|
|
|
|
// We hook terminate: in order to make OS-initiated termination work nicely
|
|
// with Gecko's shutdown sequence. (Two ways to trigger OS-initiated
|
|
// termination: 1) Quit from the Dock menu; 2) Log out from (or shut down)
|
|
// your computer while the browser is active.)
|
|
@interface NSApplication (MethodSwizzling)
|
|
- (void)nsAppShell_NSApplication_terminate:(id)sender;
|
|
@end
|
|
|
|
@implementation NSApplication (MethodSwizzling)
|
|
|
|
// Called by the OS after [MacApplicationDelegate applicationShouldTerminate:]
|
|
// has returned NSTerminateNow. This method "subclasses" and replaces the
|
|
// OS's original implementation. The only thing the orginal method does which
|
|
// we need is that it posts NSApplicationWillTerminateNotification. Everything
|
|
// else is unneeded (because it's handled elsewhere), or actively interferes
|
|
// with Gecko's shutdown sequence. For example the original terminate: method
|
|
// causes the app to exit() inside [NSApp run] (called from nsAppShell::Run()
|
|
// above), which means that nothing runs after the call to nsAppStartup::Run()
|
|
// in XRE_Main(), which in particular means that ScopedXPCOMStartup's destructor
|
|
// and NS_ShutdownXPCOM() never get called.
|
|
- (void)nsAppShell_NSApplication_terminate:(id)sender
|
|
{
|
|
[[NSNotificationCenter defaultCenter] postNotificationName:NSApplicationWillTerminateNotification
|
|
object:NSApp];
|
|
}
|
|
|
|
@end
|