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gecko-dev/xpfe/bootstrap/nsNativeAppSupportWin.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape 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 http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Bill Law law@netscape.com
*/
#include "nsNativeAppSupportBase.h"
#include "nsNativeAppSupportWin.h"
#include "nsString.h"
#include "nsICmdLineService.h"
#include "nsCOMPtr.h"
#include "nsXPIDLString.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsICmdLineHandler.h"
#include "nsIDOMWindow.h"
#include "nsISupportsPrimitives.h"
#include "nsIWindowWatcher.h"
#include "nsIDOMWindowInternal.h"
#include "nsIScriptGlobalObject.h"
#include "nsIDocShell.h"
#include "nsIBaseWindow.h"
#include "nsIAppShellService.h"
#include "nsIProfileInternal.h"
#include "rdf.h"
// These are needed to load a URL in a browser window.
#include "nsIDOMLocation.h"
#include "nsIJSContextStack.h"
#include "nsIWindowMediator.h"
#include <windows.h>
#include <ddeml.h>
#include <stdlib.h>
#include <stdio.h>
#include <io.h>
#include <fcntl.h>
static HWND hwndForDOMWindow( nsISupports * );
static
nsresult
GetMostRecentWindow(const PRUnichar* aType, nsIDOMWindowInternal** aWindow) {
nsresult rv;
nsCOMPtr<nsIWindowMediator> med( do_GetService( NS_RDF_DATASOURCE_CONTRACTID_PREFIX "window-mediator", &rv ) );
if ( NS_FAILED( rv ) )
return rv;
if ( med )
return med->GetMostRecentWindow( aType, aWindow );
return NS_ERROR_FAILURE;
}
// Define this macro to 1 to get DDE debugging output.
#define MOZ_DEBUG_DDE 0
#ifdef DEBUG_law
#undef MOZ_DEBUG_DDE
#define MOZ_DEBUG_DDE 1
#endif
class nsSplashScreenWin : public nsISplashScreen {
public:
nsSplashScreenWin();
~nsSplashScreenWin();
NS_IMETHOD Show();
NS_IMETHOD Hide();
// nsISupports methods
NS_IMETHOD_(nsrefcnt) AddRef() {
mRefCnt++;
return mRefCnt;
}
NS_IMETHOD_(nsrefcnt) Release() {
--mRefCnt;
if ( !mRefCnt ) {
delete this;
return 0;
}
return mRefCnt;
}
NS_IMETHOD QueryInterface( const nsIID &iid, void**p ) {
nsresult rv = NS_OK;
if ( p ) {
*p = 0;
if ( iid.Equals( NS_GET_IID( nsISplashScreen ) ) ) {
nsISplashScreen *result = this;
*p = result;
NS_ADDREF( result );
} else if ( iid.Equals( NS_GET_IID( nsISupports ) ) ) {
nsISupports *result = NS_STATIC_CAST( nsISupports*, this );
*p = result;
NS_ADDREF( result );
} else {
rv = NS_NOINTERFACE;
}
} else {
rv = NS_ERROR_NULL_POINTER;
}
return rv;
}
void SetDialog( HWND dlg );
void LoadBitmap();
static nsSplashScreenWin* GetPointer( HWND dlg );
static BOOL CALLBACK DialogProc( HWND dlg, UINT msg, WPARAM wp, LPARAM lp );
static DWORD WINAPI ThreadProc( LPVOID );
HWND mDlg;
HBITMAP mBitmap;
nsrefcnt mRefCnt;
}; // class nsSplashScreenWin
// Simple Win32 mutex wrapper.
struct Mutex {
Mutex( const char *name )
: mName( name ),
mHandle( 0 ),
mState( -1 ) {
mHandle = CreateMutex( 0, FALSE, mName.get() );
#if MOZ_DEBUG_DDE
printf( "CreateMutex error = 0x%08X\n", (int)GetLastError() );
#endif
}
~Mutex() {
if ( mHandle ) {
// Make sure we release it if we own it.
Unlock();
BOOL rc = CloseHandle( mHandle );
#if MOZ_DEBUG_DDE
if ( !rc ) {
printf( "CloseHandle error = 0x%08X\n", (int)GetLastError() );
}
#endif
}
}
BOOL Lock( DWORD timeout ) {
if ( mHandle ) {
#if MOZ_DEBUG_DDE
printf( "Waiting (%d msec) for DDE mutex...\n", (int)timeout );
#endif
mState = WaitForSingleObject( mHandle, timeout );
#if MOZ_DEBUG_DDE
printf( "...wait complete, result = 0x%08X\n", (int)mState );
#endif
return mState == WAIT_OBJECT_0;
} else {
return FALSE;
}
}
void Unlock() {
if ( mHandle && mState == WAIT_OBJECT_0 ) {
#if MOZ_DEBUG_DDE
printf( "Releasing DDE mutex\n" );
#endif
ReleaseMutex( mHandle );
mState = -1;
}
}
private:
nsCString mName;
HANDLE mHandle;
DWORD mState;
};
/* DDE Notes
*
* This section describes the Win32 DDE service implementation for
* Mozilla. DDE is used on Win32 platforms to communicate between
* separate instances of mozilla.exe (or other Mozilla-based
* executables), or, between the Win32 desktop shell and Mozilla.
*
* The first instance of Mozilla will become the "server" and
* subsequent executables (and the shell) will use DDE to send
* requests to that process. The requests are DDE "execute" requests
* that pass the command line arguments.
*
* Mozilla registers the DDE application "Mozilla" and currently
* supports only the "WWW_OpenURL" topic. This should be reasonably
* compatible with applications that interfaced with Netscape
* Communicator (and its predecessors?). Note that even that topic
* may not be supported in a compatible fashion as the command-line
* options for Mozilla are different than for Communiator.
*
* It is imperative that at most one instance of Mozilla execute in
* "server mode" at any one time. The "native app support" in Mozilla
* on Win32 ensures that only the server process performs XPCOM
* initialization (that is not required for subsequent client processes
* to communicate with the server process).
*
* To guarantee that only one server starts up, a Win32 "mutex" is used
* to ensure only one process executes the server-detection code. That
* code consists of initializing DDE and doing a DdeConnect to Mozilla's
* application/topic. If that connection succeeds, then a server process
* must be running already.
*
* Otherwise, no server has started. In that case, the current process
* calls DdeNameService to register that application/topic. Only at that
* point does the mutex get released.
*
* There are a couple of subtleties that one should be aware of:
*
* 1. It is imperative that DdeInitialize be called only after the mutex
* lock has been obtained. The reason is that at shutdown, DDE
* notifications go out to all initialized DDE processes. Thus, if
* the mutex is owned by a terminating intance of Mozilla, then
* calling DdeInitialize and then WaitForSingleObject will cause the
* DdeUninitialize from the terminating process to "hang" until the
* process waiting for the mutex times out (and can then service the
* notification that the DDE server is terminating). So, don't mess
* with the sequence of things in the startup/shutdown logic.
*
* 2. All mutex requests are made with a reasonably long timeout value and
* are designed to "fail safe" (i.e., a timeout is treated as failure).
*
* 3. An attempt has been made to minimize the degree to which the main
* Mozilla application logic needs to be aware of the DDE mechanisms
* implemented herein. As a result, this module surfaces a very
* large-grained interface, consisting of simple start/stop methods.
* As a consequence, details of certain scenarios can be "lost."
* Particularly, incoming DDE requests can arrive after this module
* initiates the DDE server, but before Mozilla is initialized to the
* point where those requests can be serviced (e.g., open a browser
* window to a particular URL). Since the client process sends the
* request early on, it may not be prepared to respond to that error.
* Thus, such situations may fail silently. The design goal is that
* they fail harmlessly. Refinements on this point will be made as
* details emerge (and time permits).
*/
/* Update 2001 March
*
* A significant DDE bug in Windows is causing Mozilla to get wedged at
* startup. This is detailed in Bugzill bug 53952
* (http://bugzilla.mozilla.org/show_bug.cgi?id=53952).
*
* To resolve this, we are using a new strategy:
* o Use a "message window" to detect that Mozilla is already running and
* to pass requests from a second instance back to the first;
* o Run only as a "DDE server" (not as DDE client); this avoids the
* problematic call to DDEConnect().
*
* We still use the mutex semaphore to protect the code that detects
* whether Mozilla is already running.
*/
class nsNativeAppSupportWin : public nsNativeAppSupportBase {
public:
// Overrides of base implementation.
NS_IMETHOD Start( PRBool *aResult );
NS_IMETHOD Stop( PRBool *aResult );
NS_IMETHOD Quit();
NS_IMETHOD StartServerMode();
// The "old" Start method (renamed).
NS_IMETHOD StartDDE();
// Utility function to handle a Win32-specific command line
// option: "-console", which dynamically creates a Windows
// console.
void CheckConsole();
private:
static HDDEDATA CALLBACK HandleDDENotification( UINT uType,
UINT uFmt,
HCONV hconv,
HSZ hsz1,
HSZ hsz2,
HDDEDATA hdata,
ULONG dwData1,
ULONG dwData2 );
static void HandleRequest( LPBYTE request, PRBool newWindow = PR_TRUE );
static nsCString ParseDDEArg( HSZ args, int index );
static void ActivateLastWindow();
static HDDEDATA CreateDDEData( DWORD value );
static PRBool InitTopicStrings();
static int FindTopic( HSZ topic );
static nsresult GetCmdLineArgs( LPBYTE request, nsICmdLineService **aResult );
static nsresult EnsureProfile(nsICmdLineService* args);
static nsresult OpenWindow( const char *urlstr, const char *args );
static nsresult OpenBrowserWindow( const char *args, PRBool newWindow = PR_TRUE );
static nsresult ReParent( nsISupports *window, HWND newParent );
static nsresult GetStartupURL(nsICmdLineService *args, nsCString& taskURL);
static int mConversations;
enum {
topicOpenURL,
topicActivate,
topicCancelProgress,
topicVersion,
topicRegisterViewer,
topicUnRegisterViewer,
// Note: Insert new values above this line!!!!!
topicCount // Count of the number of real topics
};
static HSZ mApplication, mTopics[ topicCount ];
static DWORD mInstance;
static char *mAppName;
friend struct MessageWindow;
}; // nsNativeAppSupportWin
nsSplashScreenWin::nsSplashScreenWin()
: mDlg( 0 ), mBitmap( 0 ), mRefCnt( 0 ) {
}
nsSplashScreenWin::~nsSplashScreenWin() {
#if MOZ_DEBUG_DDE
printf( "splash screen dtor called\n" );
#endif
// Make sure dialog is gone.
Hide();
}
NS_IMETHODIMP
nsSplashScreenWin::Show() {
// Spawn new thread to display real splash screen.
DWORD threadID = 0;
HANDLE handle = CreateThread( 0, 0, (LPTHREAD_START_ROUTINE)ThreadProc, this, 0, &threadID );
CloseHandle(handle);
return NS_OK;
}
NS_IMETHODIMP
nsSplashScreenWin::Hide() {
if ( mDlg ) {
// Fix for bugs:
// http://bugzilla.mozilla.org/show_bug.cgi?id=26581
// http://bugzilla.mozilla.org/show_bug.cgi?id=65974
// http://bugzilla.mozilla.org/show_bug.cgi?id=29172
// http://bugzilla.mozilla.org/show_bug.cgi?id=45805
// As the splash-screen is in a seperate thread, Windows considers
// this the "foreground" thread. When our main windows on the main
// thread are activated, they are treated like windows from a different
// application, so Windows 2000 and 98 both leave the window in the background.
// Therefore, we post a message to the splash-screen thread that includes
// the hwnd of the window we want moved to the foreground. This thread
// can then successfully bring the top-level window to the foreground.
nsCOMPtr<nsIDOMWindowInternal> topLevel;
GetMostRecentWindow(nsnull, getter_AddRefs( topLevel ) );
HWND hWndTopLevel = topLevel ? hwndForDOMWindow(topLevel) : 0;
// Dismiss the dialog.
::PostMessage(mDlg, WM_CLOSE, (WPARAM)mBitmap, (LPARAM)hWndTopLevel);
mBitmap = 0;
mDlg = 0;
}
return NS_OK;
}
void
nsSplashScreenWin::LoadBitmap() {
// Check for '<program-name>.bmp" in same directory as executable.
char fileName[ _MAX_PATH ];
int fileNameLen = ::GetModuleFileName( NULL, fileName, sizeof fileName );
if ( fileNameLen >= 3 ) {
fileName[ fileNameLen - 3 ] = 0;
strcat( fileName, "bmp" );
// Try to load bitmap from that file.
HBITMAP bitmap = (HBITMAP)::LoadImage( NULL,
fileName,
IMAGE_BITMAP,
0,
0,
LR_LOADFROMFILE );
if ( bitmap ) {
HWND bitmapControl = GetDlgItem( mDlg, IDB_SPLASH );
if ( bitmapControl ) {
HBITMAP old = (HBITMAP)SendMessage( bitmapControl,
STM_SETIMAGE,
IMAGE_BITMAP,
(LPARAM)bitmap );
// Remember bitmap so we can delete it later.
mBitmap = bitmap;
// Delete old bitmap.
if ( old ) {
BOOL ok = DeleteObject( old );
}
} else {
// Delete bitmap since it isn't going to be used.
DeleteObject( bitmap );
}
}
}
}
BOOL CALLBACK
nsSplashScreenWin::DialogProc( HWND dlg, UINT msg, WPARAM wp, LPARAM lp ) {
if ( msg == WM_INITDIALOG ) {
// Store dialog handle.
nsSplashScreenWin *splashScreen = (nsSplashScreenWin*)lp;
if ( lp ) {
splashScreen->SetDialog( dlg );
// Try to load customized bitmap.
splashScreen->LoadBitmap();
}
/* Size and center the splash screen correctly. The flags in the
* dialog template do not do the right thing if the user's
* machine is using large fonts.
*/
HWND bitmapControl = GetDlgItem( dlg, IDB_SPLASH );
if ( bitmapControl ) {
HBITMAP hbitmap = (HBITMAP)SendMessage( bitmapControl,
STM_GETIMAGE,
IMAGE_BITMAP,
0 );
if ( hbitmap ) {
BITMAP bitmap;
if ( GetObject( hbitmap, sizeof bitmap, &bitmap ) ) {
SetWindowPos( dlg,
NULL,
GetSystemMetrics(SM_CXSCREEN)/2 - bitmap.bmWidth/2,
GetSystemMetrics(SM_CYSCREEN)/2 - bitmap.bmHeight/2,
bitmap.bmWidth,
bitmap.bmHeight,
SWP_NOZORDER );
ShowWindow( dlg, SW_SHOW );
}
}
}
return 1;
} else if (msg == WM_CLOSE) {
// Before killing ourself, set the top-level current.
// See comments in nsSplashScreenWin::Hide() above.
HWND topLevel = (HWND)lp;
if (topLevel)
::SetForegroundWindow(topLevel);
// Destroy the dialog
::EndDialog(dlg, 0);
// Release custom bitmap (if there is one).
HBITMAP bitmap = (HBITMAP)wp;
if ( bitmap ) {
::DeleteObject( bitmap );
}
}
return 0;
}
void nsSplashScreenWin::SetDialog( HWND dlg ) {
// Save dialog handle.
mDlg = dlg;
// Store this pointer in the dialog.
SetWindowLong( mDlg, DWL_USER, (LONG)(void*)this );
}
nsSplashScreenWin *nsSplashScreenWin::GetPointer( HWND dlg ) {
// Get result from dialog user data.
LONG data = GetWindowLong( dlg, DWL_USER );
return (nsSplashScreenWin*)(void*)data;
}
DWORD WINAPI nsSplashScreenWin::ThreadProc( LPVOID splashScreen ) {
DialogBoxParam( GetModuleHandle( 0 ),
MAKEINTRESOURCE( IDD_SPLASH ),
HWND_DESKTOP,
(DLGPROC)DialogProc,
(LPARAM)splashScreen );
return 0;
}
void
nsNativeAppSupportWin::CheckConsole() {
for ( int i = 1; i < __argc; i++ ) {
if ( strcmp( "-console", __argv[i] ) == 0
||
strcmp( "/console", __argv[i] ) == 0 ) {
// Users wants to make sure we have a console.
// Try to allocate one.
BOOL rc = ::AllocConsole();
if ( rc ) {
// Console allocated. Fix it up so that output works in
// all cases. See http://support.microsoft.com/support/kb/articles/q105/3/05.asp.
// stdout
int hCrt = ::_open_osfhandle( (long)GetStdHandle( STD_OUTPUT_HANDLE ),
_O_TEXT );
if ( hCrt != -1 ) {
FILE *hf = ::_fdopen( hCrt, "w" );
if ( hf ) {
*stdout = *hf;
::fprintf( stdout, "stdout directed to dynamic console\n" );
}
}
// stderr
hCrt = ::_open_osfhandle( (long)::GetStdHandle( STD_ERROR_HANDLE ),
_O_TEXT );
if ( hCrt != -1 ) {
FILE *hf = ::_fdopen( hCrt, "w" );
if ( hf ) {
*stderr = *hf;
::fprintf( stderr, "stderr directed to dynamic console\n" );
}
}
// stdin?
/* Don't bother for now.
hCrt = ::_open_osfhandle( (long)::GetStdHandle( STD_INPUT_HANDLE ),
_O_TEXT );
if ( hCrt != -1 ) {
FILE *hf = ::_fdopen( hCrt, "r" );
if ( hf ) {
*stdin = *hf;
}
}
*/
} else {
// Failed. Probably because there already is one.
// There's little we can do, in any case.
}
// Don't bother doing this more than once.
break;
} else if ( strcmp( "-turbo", __argv[i] ) == 0
||
strcmp( "/turbo", __argv[i] ) == 0
||
strcmp( "-server", __argv[i] ) == 0
||
strcmp( "/server", __argv[i] ) == 0 ) {
// Start in server mode (and suppress splash screen).
SetIsServerMode( PR_TRUE );
__argv[i] = "-nosplash"; // Bit of a hack, but it works!
// Ignore other args.
break;
}
}
return;
}
// Create and return an instance of class nsNativeAppSupportWin.
nsresult
NS_CreateNativeAppSupport( nsINativeAppSupport **aResult ) {
if ( aResult ) {
nsNativeAppSupportWin *pNative = new nsNativeAppSupportWin;
if ( pNative ) {
*aResult = pNative;
NS_ADDREF( *aResult );
// Check for dynamic console creation request.
pNative->CheckConsole();
} else {
return NS_ERROR_OUT_OF_MEMORY;
}
} else {
return NS_ERROR_NULL_POINTER;
}
return NS_OK;
}
// Create instance of Windows splash screen object.
nsresult
NS_CreateSplashScreen( nsISplashScreen **aResult ) {
if ( aResult ) {
*aResult = 0;
for ( int i = 1; i < __argc; i++ ) {
if ( strcmp( "-quiet", __argv[i] ) == 0
||
strcmp( "/quiet", __argv[i] ) == 0 ) {
// No splash screen, please.
return NS_OK;
}
}
*aResult = new nsSplashScreenWin;
if ( *aResult ) {
NS_ADDREF( *aResult );
} else {
return NS_ERROR_OUT_OF_MEMORY;
}
} else {
return NS_ERROR_NULL_POINTER;
}
return NS_OK;
}
// Constants
#define MOZ_DDE_APPLICATION "Mozilla"
#define MOZ_STARTUP_MUTEX_NAME "StartupMutex"
#define MOZ_DDE_START_TIMEOUT 30000
#define MOZ_DDE_STOP_TIMEOUT 15000
#define MOZ_DDE_EXEC_TIMEOUT 15000
// The array entries must match the enum ordering!
const char * const topicNames[] = { "WWW_OpenURL",
"WWW_Activate",
"WWW_CancelProgress",
"WWW_Version",
"WWW_RegisterViewer",
"WWW_UnRegisterViewer" };
// Static member definitions.
int nsNativeAppSupportWin::mConversations = 0;
HSZ nsNativeAppSupportWin::mApplication = 0;
HSZ nsNativeAppSupportWin::mTopics[nsNativeAppSupportWin::topicCount] = { 0 };
DWORD nsNativeAppSupportWin::mInstance = 0;
// Message window encapsulation.
struct MessageWindow {
// ctor/dtor are simplistic
MessageWindow() {
// Try to find window.
mHandle = ::FindWindow( className(), 0 );
}
// Act like an HWND.
operator HWND() {
return mHandle;
}
// Class name: appName + "MessageWindow"
static const char *className() {
static char classNameBuffer[128];
static char *mClassName = 0;
if ( !mClassName ) {
::_snprintf( classNameBuffer,
sizeof classNameBuffer,
"%s%s",
nsNativeAppSupportWin::mAppName,
"MessageWindow" );
mClassName = classNameBuffer;
}
return mClassName;
}
// Create: Register class and create window.
NS_IMETHOD Create() {
WNDCLASS classStruct = { 0, // style
&MessageWindow::WindowProc, // lpfnWndProc
0, // cbClsExtra
0, // cbWndExtra
0, // hInstance
0, // hIcon
0, // hCursor
0, // hbrBackground
0, // lpszMenuName
className() }; // lpszClassName
// Register the window class.
NS_ENSURE_TRUE( ::RegisterClass( &classStruct ), NS_ERROR_FAILURE );
// Create the window.
NS_ENSURE_TRUE( ( mHandle = ::CreateWindow( className(),
0, // title
WS_CAPTION, // style
0,0,0,0, // x, y, cx, cy
0, // parent
0, // menu
0, // instance
0 ) ), // create struct
NS_ERROR_FAILURE );
#if MOZ_DEBUG_DDE
printf( "Message window = 0x%08X\n", (int)mHandle );
#endif
return NS_OK;
}
// SendRequest: Pass string via WM_COPYDATA to message window.
NS_IMETHOD SendRequest( const char *cmd ) {
COPYDATASTRUCT cds = { 0, ::strlen( cmd ) + 1, (void*)cmd };
::SendMessage( mHandle, WM_COPYDATA, 0, (LPARAM)&cds );
return NS_OK;
}
// Window proc.
static long CALLBACK WindowProc( HWND msgWindow, UINT msg, WPARAM wp, LPARAM lp ) {
if ( msg == WM_COPYDATA ) {
// This is an incoming request.
COPYDATASTRUCT *cds = (COPYDATASTRUCT*)lp;
#if MOZ_DEBUG_DDE
printf( "Incoming request: %s\n", (const char*)cds->lpData );
#endif
(void)nsNativeAppSupportWin::HandleRequest( (LPBYTE)cds->lpData );
}
return TRUE;
}
private:
HWND mHandle;
}; // struct MessageWindow
static char nameBuffer[128] = { 0 };
char *nsNativeAppSupportWin::mAppName = nameBuffer;
/* Start: Tries to find the "message window" to determine if it
* exists. If so, then Mozilla is already running. In that
* case, we use the handle to the "message" window and send
* a request corresponding to this process's command line
* options.
*
* If not, then this is the first instance of Mozilla. In
* that case, we create and set up the message window.
*
* The checking for existance of the message window must
* be protected by use of a mutex semaphore.
*/
NS_IMETHODIMP
nsNativeAppSupportWin::Start( PRBool *aResult ) {
NS_ENSURE_ARG( aResult );
NS_ENSURE_TRUE( mInstance == 0, NS_ERROR_NOT_INITIALIZED );
nsresult rv = NS_ERROR_FAILURE;
*aResult = PR_FALSE;
// Grab mutex first.
int retval;
UINT id = ID_DDE_APPLICATION_NAME;
retval = LoadString( (HINSTANCE) NULL, id, (LPTSTR) nameBuffer, sizeof(nameBuffer) );
if ( retval == 0 ) {
// No app name; just keep running.
*aResult = PR_TRUE;
return NS_OK;
}
// Build mutex name from app name.
char mutexName[128];
::_snprintf( mutexName, sizeof mutexName, "%s%s", nameBuffer, MOZ_STARTUP_MUTEX_NAME );
Mutex startupLock = Mutex( mutexName );
NS_ENSURE_TRUE( startupLock.Lock( MOZ_DDE_START_TIMEOUT ), NS_ERROR_FAILURE );
// Search for existing message window.
MessageWindow msgWindow;
if ( (HWND)msgWindow ) {
// We are a client process. Pass request to message window.
LPTSTR cmd = ::GetCommandLine();
rv = msgWindow.SendRequest( cmd );
} else {
// We will be server.
rv = msgWindow.Create();
if ( NS_SUCCEEDED( rv ) ) {
// Start up DDE server.
this->StartDDE();
// Tell caller to spin message loop.
*aResult = PR_TRUE;
}
}
startupLock.Unlock();
return rv;
}
PRBool
nsNativeAppSupportWin::InitTopicStrings() {
for ( int i = 0; i < topicCount; i++ ) {
if ( !( mTopics[ i ] = DdeCreateStringHandle( mInstance, topicNames[ i ], CP_WINANSI ) ) ) {
return PR_FALSE;
}
}
return PR_TRUE;
}
int
nsNativeAppSupportWin::FindTopic( HSZ topic ) {
for ( int i = 0; i < topicCount; i++ ) {
if ( DdeCmpStringHandles( topic, mTopics[i] ) == 0 ) {
return i;
}
}
return -1;
}
// Start DDE server.
//
// This used to be the Start() method when we were using DDE as the
// primary IPC mechanism between secondary Mozilla processes and the
// initial "server" process.
//
// Now, it simply initializes the DDE server. The caller must check
// that this process is to be the server, and, must acquire the DDE
// startup mutex semaphore prior to calling this routine. See ::Start(),
// above.
NS_IMETHODIMP
nsNativeAppSupportWin::StartDDE() {
NS_ENSURE_TRUE( mInstance == 0, NS_ERROR_NOT_INITIALIZED );
// Initialize DDE.
NS_ENSURE_TRUE( DMLERR_NO_ERROR == DdeInitialize( &mInstance,
nsNativeAppSupportWin::HandleDDENotification,
APPCLASS_STANDARD,
0 ),
NS_ERROR_FAILURE );
// Allocate DDE strings.
NS_ENSURE_TRUE( ( mApplication = DdeCreateStringHandle( mInstance, mAppName, CP_WINANSI ) ) && InitTopicStrings(),
NS_ERROR_FAILURE );
// Next step is to register a DDE service.
NS_ENSURE_TRUE( DdeNameService( mInstance, mApplication, 0, DNS_REGISTER ), NS_ERROR_FAILURE );
#if MOZ_DEBUG_DDE
printf( "DDE server started\n" );
#endif
return NS_OK;
}
// If no DDE conversations are pending, terminate DDE.
NS_IMETHODIMP
nsNativeAppSupportWin::Stop( PRBool *aResult ) {
NS_ENSURE_ARG( aResult );
NS_ENSURE_TRUE( mInstance, NS_ERROR_NOT_INITIALIZED );
nsresult rv = NS_OK;
*aResult = PR_TRUE;
Mutex ddeLock( MOZ_STARTUP_MUTEX_NAME );
if ( ddeLock.Lock( MOZ_DDE_STOP_TIMEOUT ) ) {
if ( mConversations == 0 ) {
this->Quit();
} else {
*aResult = PR_FALSE;
}
ddeLock.Unlock();
}
return rv;
}
// Terminate DDE regardless.
NS_IMETHODIMP
nsNativeAppSupportWin::Quit() {
if ( mInstance ) {
// Unregister application name.
DdeNameService( mInstance, mApplication, 0, DNS_UNREGISTER );
// Clean up strings.
if ( mApplication ) {
DdeFreeStringHandle( mInstance, mApplication );
mApplication = 0;
}
for ( int i = 0; i < topicCount; i++ ) {
if ( mTopics[i] ) {
DdeFreeStringHandle( mInstance, mTopics[i] );
mTopics[i] = 0;
}
}
DdeUninitialize( mInstance );
mInstance = 0;
}
return NS_OK;
}
PRBool NS_CanRun()
{
return PR_TRUE;
}
#if MOZ_DEBUG_DDE
// Macro to generate case statement for a given XTYP value.
#define XTYP_CASE(t) \
case t: result = #t; break
static nsCString uTypeDesc( UINT uType ) {
nsCString result;
switch ( uType ) {
XTYP_CASE(XTYP_ADVSTART);
XTYP_CASE(XTYP_CONNECT);
XTYP_CASE(XTYP_ADVREQ);
XTYP_CASE(XTYP_REQUEST);
XTYP_CASE(XTYP_WILDCONNECT);
XTYP_CASE(XTYP_ADVDATA);
XTYP_CASE(XTYP_EXECUTE);
XTYP_CASE(XTYP_POKE);
XTYP_CASE(XTYP_ADVSTOP);
XTYP_CASE(XTYP_CONNECT_CONFIRM);
XTYP_CASE(XTYP_DISCONNECT);
XTYP_CASE(XTYP_ERROR);
XTYP_CASE(XTYP_MONITOR);
XTYP_CASE(XTYP_REGISTER);
XTYP_CASE(XTYP_XACT_COMPLETE);
XTYP_CASE(XTYP_UNREGISTER);
default: result = "XTYP_?????";
}
return result;
}
static nsCString hszValue( DWORD instance, HSZ hsz ) {
// Extract string from HSZ.
nsCString result("[");
DWORD len = DdeQueryString( instance, hsz, NULL, NULL, CP_WINANSI );
if ( len ) {
char buffer[ 256 ];
DdeQueryString( instance, hsz, buffer, sizeof buffer, CP_WINANSI );
result += buffer;
}
result += "]";
return result;
}
#else
// These are purely a safety measure to avoid the infamous "won't
// build non-debug" type Tinderbox flames.
static nsCString uTypeDesc( UINT ) {
return nsCString( "?" );
}
static nsCString hszValue( DWORD, HSZ ) {
return nsCString( "?" );
}
#endif
HDDEDATA CALLBACK
nsNativeAppSupportWin::HandleDDENotification( UINT uType, // transaction type
UINT uFmt, // clipboard data format
HCONV hconv, // handle to the conversation
HSZ hsz1, // handle to a string
HSZ hsz2, // handle to a string
HDDEDATA hdata, // handle to a global memory object
ULONG dwData1, // transaction-specific data
ULONG dwData2 ) { // transaction-specific data
#if MOZ_DEBUG_DDE
printf( "DDE: uType =%s\n", uTypeDesc( uType ).get() );
printf( " uFmt =%u\n", (unsigned)uFmt );
printf( " hconv =%08x\n", (int)hconv );
printf( " hsz1 =%08x:%s\n", (int)hsz1, hszValue( mInstance, hsz1 ).get() );
printf( " hsz2 =%08x:%s\n", (int)hsz2, hszValue( mInstance, hsz2 ).get() );
printf( " hdata =%08x\n", (int)hdata );
printf( " dwData1=%08x\n", (int)dwData1 );
printf( " dwData2=%08x\n", (int)dwData2 );
#endif
HDDEDATA result = 0;
if ( uType & XCLASS_BOOL ) {
switch ( uType ) {
case XTYP_CONNECT:
// Make sure its for our service/topic.
if ( FindTopic( hsz1 ) != -1 ) {
// We support this connection.
result = (HDDEDATA)1;
}
break;
case XTYP_CONNECT_CONFIRM:
// We don't care about the conversation handle, at this point.
result = (HDDEDATA)1;
break;
}
} else if ( uType & XCLASS_DATA ) {
if ( uType == XTYP_REQUEST ) {
switch ( FindTopic( hsz1 ) ) {
case topicOpenURL: {
// Open a given URL...
nsCString url = ParseDDEArg( hsz2, 0 );
// Make it look like command line args.
url.Insert( "mozilla -url ", 0 );
#if MOZ_DEBUG_DDE
printf( "Handling dde XTYP_REQUEST request: [%s]...\n", url.get() );
#endif
// Now handle it.
HandleRequest( LPBYTE( url.get() ), PR_FALSE );
// Return pseudo window ID.
result = CreateDDEData( 1 );
break;
}
case topicActivate: {
// Activate a Nav window...
nsCString windowID = ParseDDEArg( hsz2, 0 );
if ( windowID.Equals( "-1" ) ) {
// We only support activating the most recent window (or a new one).
ActivateLastWindow();
// Return pseudo window ID.
result = CreateDDEData( 1 );
}
break;
}
case topicVersion: {
// Return version. We're restarting at 1.0!
DWORD version = 1 << 16; // "1.0"
result = CreateDDEData( version );
break;
}
case topicRegisterViewer: {
// Register new viewer (not implemented).
result = CreateDDEData( PR_FALSE );
break;
}
case topicUnRegisterViewer: {
// Unregister new viewer (not implemented).
result = CreateDDEData( PR_FALSE );
break;
}
default:
break;
}
} else if ( uType & XTYP_POKE ) {
switch ( FindTopic( hsz1 ) ) {
case topicCancelProgress: {
// "Handle" progress cancel (actually, pretty much ignored).
result = (HDDEDATA)DDE_FACK;
break;
}
default:
break;
}
}
} else if ( uType & XCLASS_FLAGS ) {
if ( uType == XTYP_EXECUTE ) {
// Prove that we received the request.
DWORD bytes;
LPBYTE request = DdeAccessData( hdata, &bytes );
#if MOZ_DEBUG_DDE
printf( "Handling dde request: [%s]...\n", (char*)request );
#endif
HandleRequest( request );
result = (HDDEDATA)DDE_FACK;
} else {
result = (HDDEDATA)DDE_FNOTPROCESSED;
}
} else if ( uType & XCLASS_NOTIFICATION ) {
}
#if MOZ_DEBUG_DDE
printf( "DDE result=%d (0x%08X)\n", (int)result, (int)result );
#endif
return result;
}
// Utility to parse out argument from a DDE item string.
nsCString nsNativeAppSupportWin::ParseDDEArg( HSZ args, int index ) {
nsCString result;
DWORD argLen = DdeQueryString( mInstance, args, NULL, NULL, CP_WINANSI );
if ( argLen ) {
nsCString temp;
// Ensure result's buffer is sufficiently big.
temp.SetLength( argLen + 1 );
// Now get the string contents.
DdeQueryString( mInstance, args, (char*)temp.get(), temp.Length(), CP_WINANSI );
// Parse out the given arg. We assume there's no commas within quoted strings
// (which may not be accurate, but makes life so much easier).
const char *p = temp.get();
// Skip index commas.
PRInt32 offset = index ? temp.FindChar( ',', PR_FALSE, 0, index ) : 0;
if ( offset != -1 ) {
// Desired argument starts there and ends at next comma.
PRInt32 end = temp.FindChar( ',', PR_FALSE, offset+1 );
if ( end == -1 ) {
// Rest of string.
end = temp.Length();
}
// Extract result.
result.Assign( temp.get() + offset, end - offset );
}
}
return result;
}
void nsNativeAppSupportWin::ActivateLastWindow() {
nsCOMPtr<nsIDOMWindowInternal> navWin;
GetMostRecentWindow( NS_LITERAL_STRING("navigator:browser").get(), getter_AddRefs( navWin ) );
if ( navWin ) {
// Activate that window.
HWND hwnd = hwndForDOMWindow( navWin );
if ( hwnd ) {
// Restore the window in case it is minimized.
::ShowWindow( hwnd, SW_RESTORE );
// Use the OS call, if possible.
::SetForegroundWindow( hwnd );
} else {
// Use internal method.
navWin->Focus();
}
} else {
// Need to create a Navigator window, then.
OpenBrowserWindow( "about:blank" );
}
}
HDDEDATA nsNativeAppSupportWin::CreateDDEData( DWORD value ) {
HDDEDATA result = DdeCreateDataHandle( mInstance,
(LPBYTE)&value,
sizeof value,
0,
mApplication,
CF_TEXT,
0 );
return result;
}
// Handle DDE request. The argument is the command line received by the
// DDE client process. We convert that string to an nsICmdLineService
// object via GetCmdLineArgs. Then, we look for certain well-known cmd
// arguments. This replicates code elsewhere, to some extent,
// unfortunately (if you can fix that, please do).
void
nsNativeAppSupportWin::HandleRequest( LPBYTE request, PRBool newWindow ) {
// Parse command line.
nsCOMPtr<nsICmdLineService> args;
nsresult rv;
rv = GetCmdLineArgs( request, getter_AddRefs( args ) );
if (NS_FAILED(rv)) return;
// first see if there is a url
nsXPIDLCString arg;
rv = args->GetURLToLoad(getter_Copies(arg));
if (NS_SUCCEEDED(rv) && (const char*)arg ) {
// Launch browser.
#if MOZ_DEBUG_DDE
printf( "Launching browser on url [%s]...\n", (const char*)arg );
#endif
if (NS_SUCCEEDED(EnsureProfile(args)))
(void)OpenBrowserWindow( arg );
return;
}
// ok, let's try the -chrome argument
rv = args->GetCmdLineValue("-chrome", getter_Copies(arg));
if (NS_SUCCEEDED(rv) && (const char*)arg ) {
// Launch chrome.
#if MOZ_DEBUG_DDE
printf( "Launching chrome url [%s]...\n", (const char*)arg );
#endif
if (NS_SUCCEEDED(EnsureProfile(args)))
(void)OpenWindow( arg, "" );
return;
}
// try using the command line service to get the url
nsCString taskURL;
rv = GetStartupURL(args, taskURL);
if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(EnsureProfile(args))) {
(void)OpenWindow(taskURL, "");
return;
}
// try for the "-kill" argument, to shut down the server
rv = args->GetCmdLineValue( "-kill", getter_Copies(arg));
if ( NS_SUCCEEDED(rv) && (const char*)arg ) {
// Turn off server mode.
nsCOMPtr<nsIAppShellService> appShell =
do_GetService( "@mozilla.org/appshell/appShellService;1", &rv);
if (NS_FAILED(rv)) return;
nsCOMPtr<nsINativeAppSupport> native;
rv = appShell->GetNativeAppSupport( getter_AddRefs( native ));
if (NS_SUCCEEDED(rv)) {
native->SetIsServerMode( PR_FALSE );
// This closes app if there are no top-level windows.
appShell->UnregisterTopLevelWindow( 0 );
}
return;
}
// ok, no idea what the param is.
#if MOZ_DEBUG_DDE
printf( "Unknown request [%s]\n", (char*) request );
#endif
// if all else fails, open a browser window
const char * const contractID =
"@mozilla.org/commandlinehandler/general-startup;1?type=browser";
nsCOMPtr<nsICmdLineHandler> handler = do_GetService(contractID, &rv);
if (NS_FAILED(rv)) return;
rv = EnsureProfile(args);
if (NS_FAILED(rv)) return;
nsXPIDLString defaultArgs;
rv = handler->GetDefaultArgs(getter_Copies(defaultArgs));
if (NS_FAILED(rv) || !defaultArgs) return;
if (defaultArgs) {
nsCAutoString url;
url.AssignWithConversion( defaultArgs );
OpenBrowserWindow((const char*)url);
} else {
OpenBrowserWindow("about:blank");
}
}
// Parse command line args according to MS spec
// (see "Parsing C++ Command-Line Arguments" at
// http://msdn.microsoft.com/library/devprods/vs6/visualc/vclang/_pluslang_parsing_c.2b2b_.command.2d.line_arguments.htm).
nsresult
nsNativeAppSupportWin::GetCmdLineArgs( LPBYTE request, nsICmdLineService **aResult ) {
nsresult rv = NS_OK;
int justCounting = 1;
char **argv = 0;
// Flags, etc.
int init = 1;
int between, quoted, bSlashCount;
int argc;
char *p;
nsCAutoString arg;
// We loop if we've not finished the second pass through.
while ( 1 ) {
// Initialize if required.
if ( init ) {
p = (char*)request;
between = 1;
argc = quoted = bSlashCount = 0;
init = 0;
}
if ( between ) {
// We are traversing whitespace between args.
// Check for start of next arg.
if ( *p != 0 && !isspace( *p ) ) {
// Start of another arg.
between = 0;
arg = "";
switch ( *p ) {
case '\\':
// Count the backslash.
bSlashCount = 1;
break;
case '"':
// Remember we're inside quotes.
quoted = 1;
break;
default:
// Add character to arg.
arg += *p;
break;
}
} else {
// Another space between args, ignore it.
}
} else {
// We are processing the contents of an argument.
// Check for whitespace or end.
if ( *p == 0 || ( !quoted && isspace( *p ) ) ) {
// Process pending backslashes (interpret them
// literally since they're not followed by a ").
while( bSlashCount ) {
arg += '\\';
bSlashCount--;
}
// End current arg.
if ( !justCounting ) {
argv[argc] = new char[ arg.Length() + 1 ];
strcpy( argv[argc], arg.get() );
}
argc++;
// We're now between args.
between = 1;
} else {
// Still inside argument, process the character.
switch ( *p ) {
case '"':
// First, digest preceding backslashes (if any).
while ( bSlashCount > 1 ) {
// Put one backsplash in arg for each pair.
arg += '\\';
bSlashCount -= 2;
}
if ( bSlashCount ) {
// Quote is literal.
arg += '"';
bSlashCount = 0;
} else {
// Quote starts or ends a quoted section.
if ( quoted ) {
// Check for special case of consecutive double
// quotes inside a quoted section.
if ( *(p+1) == '"' ) {
// This implies a literal double-quote. Fake that
// out by causing next double-quote to look as
// if it was preceded by a backslash.
bSlashCount = 1;
} else {
quoted = 0;
}
} else {
quoted = 1;
}
}
break;
case '\\':
// Add to count.
bSlashCount++;
break;
default:
// Accept any preceding backslashes literally.
while ( bSlashCount ) {
arg += '\\';
bSlashCount--;
}
// Just add next char to the current arg.
arg += *p;
break;
}
}
}
// Check for end of input.
if ( *p ) {
// Go to next character.
p++;
} else {
// If on first pass, go on to second.
if ( justCounting ) {
// Allocate argv array.
argv = new char*[ argc ];
// Start second pass
justCounting = 0;
init = 1;
} else {
// Quit.
break;
}
}
}
// OK, now create nsICmdLineService object from argc/argv.
static NS_DEFINE_CID( kCmdLineServiceCID, NS_COMMANDLINE_SERVICE_CID );
rv = nsComponentManager::CreateInstance( kCmdLineServiceCID,
0,
NS_GET_IID( nsICmdLineService ),
(void**)aResult );
if ( NS_FAILED( rv ) || NS_FAILED( ( rv = (*aResult)->Initialize( argc, argv ) ) ) ) {
#if MOZ_DEBUG_DDE
printf( "Error creating command line service = 0x%08X (argc=%d, argv=0x%08X)\n", (int)rv, (int)argc, (void*)argv );
#endif
}
// Cleanup.
while ( argc ) {
delete [] argv[ --argc ];
}
delete [] argv;
return rv;
}
// Check the needsProfileUI attribute of the native app and,
// if so, do it. Once this suceeds, set the attribute to false
// so we can only do this once.
nsresult
nsNativeAppSupportWin::EnsureProfile(nsICmdLineService* args)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIAppShellService> appShell = do_GetService( "@mozilla.org/appshell/appShellService;1", &rv );
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsINativeAppSupport> nativeApp;
rv = appShell->GetNativeAppSupport(getter_AddRefs(nativeApp));
if (NS_FAILED(rv)) return rv;
PRBool needsProfileUI;
rv = nativeApp->GetNeedsProfileUI(&needsProfileUI);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIProfileInternal> profileMgr(do_GetService(NS_PROFILE_CONTRACTID, &rv));
if (NS_FAILED(rv)) return rv;
if (needsProfileUI) {
// We need profile UI because we started in
// server mode and could not show it then.
rv = profileMgr->StartupWithArgs(args, PR_TRUE);
if (NS_FAILED(rv)) return rv;
nativeApp->SetNeedsProfileUI(PR_FALSE);
}
else {
// Even if not started in server mode, ensure
// that we have a profile. We can hit this case
// if somebody double-clicks the app twice.
PRBool haveProfile = PR_FALSE;
(void)profileMgr->IsCurrentProfileAvailable(&haveProfile);
if (!haveProfile) return NS_ERROR_FAILURE;
}
return NS_OK;
}
nsresult
nsNativeAppSupportWin::OpenWindow( const char*urlstr, const char *args ) {
nsresult rv = NS_ERROR_FAILURE;
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService("@mozilla.org/embedcomp/window-watcher;1"));
nsCOMPtr<nsISupportsString> sarg(do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
if (sarg)
sarg->SetData(args);
if (wwatch && sarg) {
nsCOMPtr<nsIDOMWindow> newWindow;
rv = wwatch->OpenWindow(0, urlstr, "_blank", "chrome,dialog=no,all",
sarg, getter_AddRefs(newWindow));
#if MOZ_DEBUG_DDE
} else {
printf("Get WindowWatcher (or create string) failed\n");
#endif
}
return rv;
}
static char procPropertyName[] = "MozillaProcProperty";
// Subclass procedure used to filter out WM_SETFOCUS messages while reparenting.
static LRESULT CALLBACK focusFilterProc( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam ) {
if ( uMsg == WM_SETFOCUS ) {
// Don't let Mozilla's window procedure see this.
return 0;
} else {
// Pass on all other messages to Mozilla's window proc.
HANDLE oldProc = ::GetProp( hwnd, procPropertyName );
if ( oldProc ) {
return ::CallWindowProc( (WNDPROC)oldProc, hwnd, uMsg, wParam, lParam );
} else {
// Last resort is the default window proc.
return ::DefWindowProc( hwnd, uMsg, wParam, lParam );
}
}
}
HWND hwndForDOMWindow( nsISupports *window ) {
nsCOMPtr<nsIScriptGlobalObject> ppScriptGlobalObj( do_QueryInterface(window) );
if ( !ppScriptGlobalObj ) {
return 0;
}
nsCOMPtr<nsIDocShell> ppDocShell;
ppScriptGlobalObj->GetDocShell( getter_AddRefs( ppDocShell ) );
if ( !ppDocShell ) {
return 0;
}
nsCOMPtr<nsIBaseWindow> ppBaseWindow( do_QueryInterface( ppDocShell ) );
if ( !ppBaseWindow ) {
return 0;
}
nsCOMPtr<nsIWidget> ppWidget;
ppBaseWindow->GetMainWidget( getter_AddRefs( ppWidget ) );
return (HWND)( ppWidget->GetNativeData( NS_NATIVE_WIDGET ) );
}
nsresult
nsNativeAppSupportWin::ReParent( nsISupports *window, HWND newParent ) {
HWND hMainFrame = hwndForDOMWindow( window );
if ( !hMainFrame ) {
return NS_ERROR_FAILURE;
}
// Filter out WM_SETFOCUS messages while reparenting to
// other than the desktop.
//
// For some reason, Windows generates one and it causes
// our focus/activation code to assert.
LONG oldProc = 0;
if ( newParent ) {
// Subclass the window.
oldProc = ::SetWindowLong( hMainFrame,
GWL_WNDPROC,
(LONG)(WNDPROC)focusFilterProc );
// Store old procedure in window so it is available within
// focusFilterProc.
::SetProp( hMainFrame, procPropertyName, (HANDLE)oldProc );
}
// Reset the parent.
::SetParent( hMainFrame, newParent );
// Restore old procedure.
if ( newParent ) {
::SetWindowLong( hMainFrame, GWL_WNDPROC, oldProc );
::RemoveProp( hMainFrame, procPropertyName );
}
return NS_OK;
}
static const char sJSStackContractID[] = "@mozilla.org/js/xpc/ContextStack;1";
class SafeJSContext {
public:
SafeJSContext();
~SafeJSContext();
nsresult Push();
JSContext *get() { return mContext; }
protected:
nsCOMPtr<nsIThreadJSContextStack> mService;
JSContext *mContext;
};
SafeJSContext::SafeJSContext() : mContext(nsnull) {
}
SafeJSContext::~SafeJSContext() {
JSContext *cx;
nsresult rv;
if(mContext) {
rv = mService->Pop(&cx);
NS_ASSERTION(NS_SUCCEEDED(rv) && cx == mContext, "JSContext push/pop mismatch");
}
}
nsresult SafeJSContext::Push() {
nsresult rv;
if (mContext) // only once
return NS_ERROR_FAILURE;
mService = do_GetService(sJSStackContractID);
if(mService) {
rv = mService->GetSafeJSContext(&mContext);
if (NS_SUCCEEDED(rv) && mContext) {
rv = mService->Push(mContext);
if (NS_FAILED(rv))
mContext = 0;
}
}
return mContext ? NS_OK : NS_ERROR_FAILURE;
}
nsresult
nsNativeAppSupportWin::OpenBrowserWindow( const char *args, PRBool newWindow ) {
nsresult rv = NS_OK;
// Open the argument URL in the most recently used Navigator window.
// If there is no Nav window, open a new one.
// Get most recently used Nav window.
nsCOMPtr<nsIDOMWindowInternal> navWin;
GetMostRecentWindow( NS_LITERAL_STRING( "navigator:browser" ).get(), getter_AddRefs( navWin ) );
// This isn't really a loop. We just use "break" statements to fall
// out to the OpenWindow call when things go awry.
do {
// If caller requires a new window, then don't use an existing one.
if ( newWindow ) {
break;
}
if ( !navWin ) {
// Have to open a new one.
break;
}
// Get content window.
nsCOMPtr<nsIDOMWindow> content;
navWin->GetContent( getter_AddRefs( content ) );
if ( !content ) {
break;
}
// Convert that to internal interface.
nsCOMPtr<nsIDOMWindowInternal> internalContent( do_QueryInterface( content ) );
if ( !internalContent ) {
break;
}
// Get location.
nsCOMPtr<nsIDOMLocation> location;
internalContent->GetLocation( getter_AddRefs( location ) );
if ( !location ) {
break;
}
// Set up environment.
SafeJSContext context;
if ( NS_FAILED( context.Push() ) ) {
break;
}
// Set href.
nsAutoString url; url.AssignWithConversion( args );
if ( NS_FAILED( location->SetHref( url ) ) ) {
break;
}
// Finally, if we get here, we're done.
return NS_OK;
} while ( PR_FALSE );
// Last resort is to open a brand new window.
return OpenWindow( "chrome://navigator/content", args );
}
// This opens a special browser window for purposes of priming the pump for
// server mode (getting stuff into the caching, loading .dlls, etc.). The
// window will have these attributes:
// - Load about:blank (no home page)
// - No toolbar (so there's no sidebar panels loaded, either)
// - Pass magic arg to cause window to close in onload handler.
NS_IMETHODIMP
nsNativeAppSupportWin::StartServerMode() {
// Create some of the objects we'll need.
nsCOMPtr<nsIWindowWatcher> ww(do_GetService("@mozilla.org/embedcomp/window-watcher;1"));
nsCOMPtr<nsISupportsWString> arg1(do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID));
nsCOMPtr<nsISupportsWString> arg2(do_CreateInstance(NS_SUPPORTS_WSTRING_CONTRACTID));
if ( !ww || !arg1 || !arg2 ) {
return NS_OK;
}
// Create the array for the arguments.
nsCOMPtr<nsISupportsArray> argArray;
NS_NewISupportsArray( getter_AddRefs( argArray ) );
if ( !argArray ) {
return NS_OK;
}
// arg1 is the url to load.
// arg2 is the string that tells navigator.js to auto-close.
arg1->SetData( NS_LITERAL_STRING( "about:blank" ).get() );
arg2->SetData( NS_LITERAL_STRING( "turbo=yes" ).get() );
// Put args into array.
if ( NS_FAILED( argArray->AppendElement( arg1 ) ) ||
NS_FAILED( argArray->AppendElement( arg2 ) ) ) {
return NS_OK;
}
// Now open the window.
nsCOMPtr<nsIDOMWindow> newWindow;
ww->OpenWindow( 0,
"chrome://navigator/content",
"_blank",
"chrome,dialog=no,toolbar=no",
argArray,
getter_AddRefs( newWindow ) );
if ( !newWindow ) {
return NS_OK;
}
// Hide this window by re-parenting it (to ensure it doesn't appear).
ReParent( newWindow, (HWND)MessageWindow() );
return NS_OK;
}
// go through the command line arguments, and try to load a handler
// for one, and when we do, get the chrome URL for its task
nsresult
nsNativeAppSupportWin::GetStartupURL(nsICmdLineService *args, nsCString& taskURL)
{
nsresult rv;
nsCOMPtr<nsICmdLineHandler> handler;
// see if there is a handler
rv = args->GetHandlerForParam(nsnull, getter_AddRefs(handler));
if (NS_FAILED(rv)) return rv;
// ok, from here on out, failures really are fatal
nsXPIDLCString url;
rv = handler->GetChromeUrlForTask(getter_Copies(url));
if (NS_FAILED(rv)) return rv;
taskURL.Assign(url.get());
return NS_OK;
}
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