gecko-dev/toolkit/xre/MacApplicationDelegate.mm

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
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 * License.
 *
 * The Original Code is the Mozilla XUL Toolkit.
 *
 * The Initial Developer of the Original Code is
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 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Stan Shebs <shebs@mozilla.com>
 *   Thomas K. Dyas <tom.dyas@gmail.com>
 *
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// NSApplication delegate for Mac OS X Cocoa API.

// As of 10.4 Tiger, the system can send six kinds of Apple Events to an application;
// a well-behaved XUL app should have some kind of handling for all of them.
//
// See http://developer.apple.com/documentation/Cocoa/Conceptual/ScriptableCocoaApplications/SApps_handle_AEs/chapter_11_section_3.html for details.

#import <Cocoa/Cocoa.h>
#import <Carbon/Carbon.h>

#include "nsCOMPtr.h"
#include "nsINativeAppSupport.h"
#include "nsAppRunner.h"
#include "nsComponentManagerUtils.h"
#include "nsCommandLineServiceMac.h"
#include "nsIServiceManager.h"
#include "nsServiceManagerUtils.h"
#include "nsIAppStartup.h"
#include "nsIObserverService.h"
#include "nsISupportsPrimitives.h"
#include "nsObjCExceptions.h"
#include "nsIFile.h"
#include "nsDirectoryServiceDefs.h"
#include "nsICommandLineRunner.h"
#include "nsIMacDockSupport.h"
#include "nsIStandaloneNativeMenu.h"

@interface MacApplicationDelegate : NSObject
{
}

@end

// Something to call from non-objective code.

// This is needed, on relaunch, to force the OS to use the "Cocoa Dock API"
// instead of the "Carbon Dock API".  For more info see bmo bug 377166.
void
EnsureUseCocoaDockAPI()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

  [NSApplication sharedApplication];

  NS_OBJC_END_TRY_ABORT_BLOCK;
}

void
SetupMacApplicationDelegate()
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

  // this is called during startup, outside an event loop, and therefore
  // needs an autorelease pool to avoid cocoa object leakage (bug 559075)
  NSAutoreleasePool *pool = [[NSAutoreleasePool alloc] init];

  // This call makes it so that application:openFile: doesn't get bogus calls
  // from Cocoa doing its own parsing of the argument string. And yes, we need
  // to use a string with a boolean value in it. That's just how it works.
  [[NSUserDefaults standardUserDefaults] setObject:@"NO"
                                            forKey:@"NSTreatUnknownArgumentsAsOpen"];

  // Create the delegate. This should be around for the lifetime of the app.
  MacApplicationDelegate *delegate = [[MacApplicationDelegate alloc] init];
  [NSApp setDelegate:delegate];

  [pool release];

  NS_OBJC_END_TRY_ABORT_BLOCK;
}

@implementation MacApplicationDelegate

- (id)init
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

  if ((self = [super init])) {
    NSAppleEventManager *aeMgr = [NSAppleEventManager sharedAppleEventManager];

    [aeMgr setEventHandler:self
               andSelector:@selector(handleAppleEvent:withReplyEvent:)
             forEventClass:kInternetEventClass
                andEventID:kAEGetURL];

    [aeMgr setEventHandler:self
               andSelector:@selector(handleAppleEvent:withReplyEvent:)
             forEventClass:'WWW!'
                andEventID:'OURL'];

    if (![NSApp windowsMenu]) {
      // If the application has a windows menu, it will keep it up to date and
      // prepend the window list to the Dock menu automatically.
      NSMenu* windowsMenu = [[NSMenu alloc] initWithTitle:@"Window"];
      [NSApp setWindowsMenu:windowsMenu];
      [windowsMenu release];
    }
  }
  return self;

  NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(nil);
}

- (void)dealloc
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK;

  NSAppleEventManager *aeMgr = [NSAppleEventManager sharedAppleEventManager];
  [aeMgr removeEventHandlerForEventClass:kInternetEventClass andEventID:kAEGetURL];
  [aeMgr removeEventHandlerForEventClass:'WWW!' andEventID:'OURL'];
  [super dealloc];

  NS_OBJC_END_TRY_ABORT_BLOCK;
}

// Opening the application is handled specially elsewhere,
// don't define applicationOpenUntitledFile: .

// The method that NSApplication calls upon a request to reopen, such as when
// the Dock icon is clicked and no windows are open.

// A "visible" window may be miniaturized, so we can't skip
// nsCocoaNativeReOpen() if 'flag' is 'true'.
- (BOOL)applicationShouldHandleReopen:(NSApplication*)theApp hasVisibleWindows:(BOOL)flag
{
  nsCOMPtr<nsINativeAppSupport> nas = do_CreateInstance(NS_NATIVEAPPSUPPORT_CONTRACTID);
  NS_ENSURE_TRUE(nas, NO);

  // Go to the common Carbon/Cocoa reopen method.
  nsresult rv = nas->ReOpen();
  NS_ENSURE_SUCCESS(rv, NO);

  // NO says we don't want NSApplication to do anything else for us.
  return NO;
}

// The method that NSApplication calls when documents are requested to be opened.
// It will be called once for each selected document.

- (BOOL)application:(NSApplication*)theApplication openFile:(NSString*)filename
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

  // Take advantage of the existing "command line" code for Macs.
  nsMacCommandLine& cmdLine = nsMacCommandLine::GetMacCommandLine();
  // URLWithString expects our string to be a legal URL with percent escapes.
  filename = [filename stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
  // We don't actually care about Mac filetypes in this context, just pass a placeholder.
  cmdLine.HandleOpenOneDoc((CFURLRef)[NSURL URLWithString:filename], 'abcd');

  return YES;

  NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(NO);
}

// The method that NSApplication calls when documents are requested to be printed
// from the Finder (under the "File" menu).
// It will be called once for each selected document.

- (BOOL)application:(NSApplication*)theApplication printFile:(NSString*)filename
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_RETURN;

  // Take advantage of the existing "command line" code for Macs.
  nsMacCommandLine& cmdLine = nsMacCommandLine::GetMacCommandLine();
  // We don't actually care about Mac filetypes in this context, just pass a placeholder.
  cmdLine.HandlePrintOneDoc((CFURLRef)[NSURL URLWithString:filename], 'abcd');

  return YES;

  NS_OBJC_END_TRY_ABORT_BLOCK_RETURN(NO);
}

// Create the menu that shows up in the Dock.

- (NSMenu*)applicationDockMenu:(NSApplication*)sender
{
  NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NIL;

  // Create the NSMenu that will contain the dock menu items.
  NSMenu *menu = [[[NSMenu alloc] initWithTitle:@""] autorelease];
  [menu setAutoenablesItems:NO];

  // Add application-specific dock menu items. On error, do not insert the
  // dock menu items.
  nsresult rv;
  nsCOMPtr<nsIMacDockSupport> dockSupport = do_GetService("@mozilla.org/widget/macdocksupport;1", &rv);
  if (NS_FAILED(rv) || !dockSupport)
    return menu;

  nsCOMPtr<nsIStandaloneNativeMenu> dockMenu;
  rv = dockSupport->GetDockMenu(getter_AddRefs(dockMenu));
  if (NS_FAILED(rv) || !dockMenu)
    return menu;

  // Determine if the dock menu items should be displayed. This also gives
  // the menu the opportunity to update itself before display.
  PRBool shouldShowItems;
  rv = dockMenu->MenuWillOpen(&shouldShowItems);
  if (NS_FAILED(rv) || !shouldShowItems)
    return menu;

  // Obtain a copy of the native menu.
  NSMenu * nativeDockMenu;
  rv = dockMenu->GetNativeMenu(reinterpret_cast<void **>(&nativeDockMenu));
  if (NS_FAILED(rv) || !nativeDockMenu)
    return menu;

  // Loop through the application-specific dock menu and insert its
  // contents into the dock menu that we are building for Cocoa.
  int numDockMenuItems = [nativeDockMenu numberOfItems];
  if (numDockMenuItems > 0) {
    if ([menu numberOfItems] > 0)
      [menu addItem:[NSMenuItem separatorItem]];

    for (int i = 0; i < numDockMenuItems; i++) {
      NSMenuItem * itemCopy = [[nativeDockMenu itemAtIndex:i] copy];
      [menu addItem:itemCopy];
      [itemCopy release];
    }
  }

  return menu;

  NS_OBJC_END_TRY_ABORT_BLOCK_NIL;
}

// If we don't handle applicationShouldTerminate:, a call to [NSApp terminate:]
// (from the browser or from the OS) can result in an unclean shutdown.
- (NSApplicationTerminateReply)applicationShouldTerminate:(NSApplication *)sender
{
  nsCOMPtr<nsIObserverService> obsServ =
           do_GetService("@mozilla.org/observer-service;1");
  if (!obsServ)
    return NSTerminateNow;

  nsCOMPtr<nsISupportsPRBool> cancelQuit =
           do_CreateInstance(NS_SUPPORTS_PRBOOL_CONTRACTID);
  if (!cancelQuit)
    return NSTerminateNow;

  cancelQuit->SetData(PR_FALSE);
  obsServ->NotifyObservers(cancelQuit, "quit-application-requested", nsnull);

  PRBool abortQuit;
  cancelQuit->GetData(&abortQuit);
  if (abortQuit)
    return NSTerminateCancel;

  nsCOMPtr<nsIAppStartup> appService =
           do_GetService("@mozilla.org/toolkit/app-startup;1");
  if (appService)
    appService->Quit(nsIAppStartup::eForceQuit);

  return NSTerminateNow;
}

- (void)handleAppleEvent:(NSAppleEventDescriptor*)event withReplyEvent:(NSAppleEventDescriptor*)replyEvent
{
  if (!event)
    return;

  if (([event eventClass] == kInternetEventClass && [event eventID] == kAEGetURL) ||
      ([event eventClass] == 'WWW!' && [event eventID] == 'OURL')) {
    NSString* urlString = [[event paramDescriptorForKeyword:keyDirectObject] stringValue];

    // don't open chrome URLs
    NSString* schemeString = [[NSURL URLWithString:urlString] scheme];
    if (!schemeString ||
        [schemeString compare:@"chrome"
                      options:NSCaseInsensitiveSearch
                        range:NSMakeRange(0, [schemeString length])] == NSOrderedSame) {
      return;
    }

    nsCOMPtr<nsICommandLineRunner> cmdLine(do_CreateInstance("@mozilla.org/toolkit/command-line;1"));
    if (!cmdLine) {
      NS_ERROR("Couldn't create command line!");
      return;
    }
    nsCOMPtr<nsIFile> workingDir;
    nsresult rv = NS_GetSpecialDirectory(NS_OS_CURRENT_WORKING_DIR, getter_AddRefs(workingDir));
    if (NS_FAILED(rv))
      return;
    const char *argv[3] = {nsnull, "-url", [urlString UTF8String]};
    rv = cmdLine->Init(3, const_cast<char**>(argv), workingDir, nsICommandLine::STATE_REMOTE_EXPLICIT);
    if (NS_FAILED(rv))
      return;
    rv = cmdLine->Run();
  }
}

@end