1 files changed, 241 insertions, 0 deletions
diff --git a/widget/uikit/nsAppShell.mm b/widget/uikit/nsAppShell.mm
new file mode 100644
index 0000000000..1fd995f3e8
--- /dev/null
+++ b/widget/uikit/nsAppShell.mm
@@ -0,0 +1,241 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#import <UIKit/UIApplication.h>
+#import <UIKit/UIScreen.h>
+#import <UIKit/UIWindow.h>
+#import <UIKit/UIViewController.h>
+
+#include "nsAppShell.h"
+#include "nsCOMPtr.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsString.h"
+#include "nsIRollupListener.h"
+#include "nsIWidget.h"
+#include "nsThreadUtils.h"
+#include "nsMemoryPressure.h"
+#include "nsServiceManagerUtils.h"
+
+nsAppShell* nsAppShell::gAppShell = NULL;
+UIWindow* nsAppShell::gWindow = nil;
+NSMutableArray* nsAppShell::gTopLevelViews = [[NSMutableArray alloc] init];
+
+#define ALOG(args...)    \
+  fprintf(stderr, args); \
+  fprintf(stderr, "\n")
+
+// ViewController
+@interface ViewController : UIViewController
+@end
+
+@implementation ViewController
+
+- (void)loadView {
+  ALOG("[ViewController loadView]");
+  CGRect r = {{0, 0}, {100, 100}};
+  self.view = [[UIView alloc] initWithFrame:r];
+  [self.view setBackgroundColor:[UIColor lightGrayColor]];
+  // add all of the top level views as children
+  for (UIView* v in nsAppShell::gTopLevelViews) {
+    ALOG("[ViewController.view addSubView:%p]", v);
+    [self.view addSubview:v];
+  }
+  [nsAppShell::gTopLevelViews release];
+  nsAppShell::gTopLevelViews = nil;
+}
+@end
+
+// AppShellDelegate
+//
+// Acts as a delegate for the UIApplication
+
+@interface AppShellDelegate : NSObject <UIApplicationDelegate> {
+}
+@property(strong, nonatomic) UIWindow* window;
+@end
+
+@implementation AppShellDelegate
+
+- (BOOL)application:(UIApplication*)application
+    didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {
+  ALOG("[AppShellDelegate application:didFinishLaunchingWithOptions:]");
+  // We only create one window, since we can only display one window at
+  // a time anyway. Also, iOS 4 fails to display UIWindows if you
+  // create them before calling UIApplicationMain, so this makes more sense.
+  nsAppShell::gWindow =
+      [[[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] applicationFrame]] retain];
+  self.window = nsAppShell::gWindow;
+
+  self.window.rootViewController = [[ViewController alloc] init];
+
+  // just to make things more visible for now
+  nsAppShell::gWindow.backgroundColor = [UIColor blueColor];
+  [nsAppShell::gWindow makeKeyAndVisible];
+
+  return YES;
+}
+
+- (void)applicationWillTerminate:(UIApplication*)application {
+  ALOG("[AppShellDelegate applicationWillTerminate:]");
+  nsAppShell::gAppShell->WillTerminate();
+}
+
+- (void)applicationDidBecomeActive:(UIApplication*)application {
+  ALOG("[AppShellDelegate applicationDidBecomeActive:]");
+}
+
+- (void)applicationWillResignActive:(UIApplication*)application {
+  ALOG("[AppShellDelegate applicationWillResignActive:]");
+}
+
+- (void)applicationDidReceiveMemoryWarning:(UIApplication*)application {
+  ALOG("[AppShellDelegate applicationDidReceiveMemoryWarning:]");
+  NS_NotifyOfMemoryPressure(MemoryPressureState::LowMemory);
+}
+@end
+
+// nsAppShell implementation
+
+NS_IMETHODIMP
+nsAppShell::ResumeNative(void) { return nsBaseAppShell::ResumeNative(); }
+
+nsAppShell::nsAppShell()
+    : mAutoreleasePool(NULL),
+      mDelegate(NULL),
+      mCFRunLoop(NULL),
+      mCFRunLoopSource(NULL),
+      mTerminated(false),
+      mNotifiedWillTerminate(false) {
+  gAppShell = this;
+}
+
+nsAppShell::~nsAppShell() {
+  if (mAutoreleasePool) {
+    [mAutoreleasePool release];
+    mAutoreleasePool = NULL;
+  }
+
+  if (mCFRunLoop) {
+    if (mCFRunLoopSource) {
+      ::CFRunLoopRemoveSource(mCFRunLoop, mCFRunLoopSource, kCFRunLoopCommonModes);
+      ::CFRelease(mCFRunLoopSource);
+    }
+    ::CFRelease(mCFRunLoop);
+  }
+
+  gAppShell = NULL;
+}
+
+// Init
+//
+// public
+nsresult nsAppShell::Init() {
+  mAutoreleasePool = [[NSAutoreleasePool alloc] init];
+
+  // Add a CFRunLoopSource to the main native run loop.  The source is
+  // responsible for interrupting the run loop when Gecko events are ready.
+
+  mCFRunLoop = [[NSRunLoop currentRunLoop] getCFRunLoop];
+  NS_ENSURE_STATE(mCFRunLoop);
+  ::CFRetain(mCFRunLoop);
+
+  CFRunLoopSourceContext context;
+  bzero(&context, sizeof(context));
+  // context.version = 0;
+  context.info = this;
+  context.perform = ProcessGeckoEvents;
+
+  mCFRunLoopSource = ::CFRunLoopSourceCreate(kCFAllocatorDefault, 0, &context);
+  NS_ENSURE_STATE(mCFRunLoopSource);
+
+  ::CFRunLoopAddSource(mCFRunLoop, mCFRunLoopSource, kCFRunLoopCommonModes);
+
+  return nsBaseAppShell::Init();
+}
+
+// ProcessGeckoEvents
+//
+// The "perform" target of mCFRunLoop, called when mCFRunLoopSource is
+// signalled from ScheduleNativeEventCallback.
+//
+// protected static
+void nsAppShell::ProcessGeckoEvents(void* aInfo) {
+  nsAppShell* self = static_cast<nsAppShell*>(aInfo);
+  self->NativeEventCallback();
+  self->Release();
+}
+
+// WillTerminate
+//
+// public
+void nsAppShell::WillTerminate() {
+  mNotifiedWillTerminate = true;
+  if (mTerminated) return;
+  mTerminated = true;
+  // We won't get another chance to process events
+  NS_ProcessPendingEvents(NS_GetCurrentThread());
+
+  // Unless we call nsBaseAppShell::Exit() here, it might not get called
+  // at all.
+  nsBaseAppShell::Exit();
+}
+
+// ScheduleNativeEventCallback
+//
+// protected virtual
+void nsAppShell::ScheduleNativeEventCallback() {
+  if (mTerminated) return;
+
+  NS_ADDREF_THIS();
+
+  // This will invoke ProcessGeckoEvents on the main thread.
+  ::CFRunLoopSourceSignal(mCFRunLoopSource);
+  ::CFRunLoopWakeUp(mCFRunLoop);
+}
+
+// ProcessNextNativeEvent
+//
+// protected virtual
+bool nsAppShell::ProcessNextNativeEvent(bool aMayWait) {
+  if (mTerminated) return false;
+
+  NSString* currentMode = nil;
+  NSDate* waitUntil = nil;
+  if (aMayWait) waitUntil = [NSDate distantFuture];
+  NSRunLoop* currentRunLoop = [NSRunLoop currentRunLoop];
+
+  BOOL eventProcessed = NO;
+  do {
+    currentMode = [currentRunLoop currentMode];
+    if (!currentMode) currentMode = NSDefaultRunLoopMode;
+
+    if (aMayWait)
+      eventProcessed = [currentRunLoop runMode:currentMode beforeDate:waitUntil];
+    else
+      [currentRunLoop acceptInputForMode:currentMode beforeDate:waitUntil];
+  } while (eventProcessed && aMayWait);
+
+  return false;
+}
+
+// Run
+//
+// public
+NS_IMETHODIMP
+nsAppShell::Run(void) {
+  ALOG("nsAppShell::Run");
+  char argv[1][4] = {"app"};
+  UIApplicationMain(1, (char**)argv, nil, @"AppShellDelegate");
+  // UIApplicationMain doesn't exit. :-(
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+nsAppShell::Exit(void) {
+  if (mTerminated) return NS_OK;
+
+  mTerminated = true;
+  return nsBaseAppShell::Exit();
+}