// This file is part of BOINC.
// http://boinc.berkeley.edu
// Copyright (C) 2008 University of California
//
// BOINC is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License
// as published by the Free Software Foundation,
// either version 3 of the License, or (at your option) any later version.
//
// BOINC is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with BOINC.  If not, see <http://www.gnu.org/licenses/>.

#if defined(__GNUG__) && !defined(__APPLE__)
#pragma implementation "BOINCGUIApp.h"
#endif

#ifdef __WXMAC__
#include <Carbon/Carbon.h>
#include "filesys.h"
#include "util.h"
#if (defined(SANDBOX) && defined(_DEBUG))
#include "SetupSecurity.h"
#endif
#include "sandbox.h"
#endif

#include "stdwx.h"
#include "diagnostics.h"
#include "network.h"
#include "util.h"
#include "mfile.h"
#include "miofile.h"
#include "parse.h"
#include "idlemon.h"
#include "Events.h"
#include "common/wxFlatNotebook.h"
#include "BOINCInternetFSHandler.h"
#include "LogBOINC.h"
#include "BOINCGUIApp.h"
#include "SkinManager.h"
#include "MainDocument.h"
#include "BOINCClientManager.h"
#include "BOINCTaskBar.h"
#include "BOINCBaseFrame.h"
#include "AdvancedFrame.h"
#include "DlgExitMessage.h"
#include "DlgEventLog.h"
#include "procinfo.h"
#include "sg_BoincSimpleFrame.h"


DEFINE_EVENT_TYPE(wxEVT_RPC_FINISHED)

IMPLEMENT_APP(CBOINCGUIApp)
IMPLEMENT_DYNAMIC_CLASS(CBOINCGUIApp, wxApp)

BEGIN_EVENT_TABLE (CBOINCGUIApp, wxApp)
    EVT_ACTIVATE_APP(CBOINCGUIApp::OnActivateApp)
    EVT_RPC_FINISHED(CBOINCGUIApp::OnRPCFinished)
#if (defined(__WXMSW__) && !wxCHECK_VERSION(2, 9, 4))
    EVT_END_SESSION(CBOINCGUIApp::OnEndSession)
#endif
END_EVENT_TABLE ()


bool s_bSkipExitConfirmation = false;

#ifdef __WXMAC__

// Set s_bSkipExitConfirmation to true if cancelled because of logging out or shutting down
OSErr QuitAppleEventHandler( const AppleEvent *appleEvt, AppleEvent* reply, UInt32 refcon ) {
        DescType            senderType;
        Size                actualSize;
        ProcessSerialNumber SenderPSN;
        ProcessInfoRec      pInfo;
        FSSpec              fileSpec;
        OSStatus            anErr;

        // Refuse to quit if a modal dialog is open.  
        // Unfortunately, I know of no way to disable the Quit item in our Dock menu
        if (wxGetApp().IsModalDialogDisplayed()) {
            SysBeep(4);
            return userCanceledErr;
        }
                
        anErr = AEGetAttributePtr(appleEvt, keyAddressAttr, typeProcessSerialNumber,
                                    &senderType, &SenderPSN, sizeof(SenderPSN), &actualSize);

        if (anErr == noErr) {
            pInfo.processInfoLength = sizeof( ProcessInfoRec );
            pInfo.processName = NULL;
            pInfo.processAppSpec = &fileSpec;

            anErr = GetProcessInformation(&SenderPSN, &pInfo);

            // Consider a Quit command from our Dock menu as coming from this application
            if ( (pInfo.processSignature != 'dock') && (pInfo.processSignature != 'BNC!') ) {
                s_bSkipExitConfirmation = true; // Not from our app, our dock icon or our taskbar icon
                wxGetApp().ExitMainLoop();  // Prevents wxMac from issuing events to closed frames
            }
        }
    
    return wxGetApp().MacHandleAEQuit((AppleEvent*)appleEvt, reply);
}

#endif


bool CBOINCGUIApp::OnInit() {
    // Initialize globals
#ifdef SANDBOX
    g_use_sandbox = true;
#else
    g_use_sandbox = false;
#endif

    s_bSkipExitConfirmation = false;
    m_bFilterEvents = false;

    // Initialize class variables
    m_pLocale = NULL;
    m_pSkinManager = NULL;
    m_pFrame = NULL;
    m_pDocument = NULL;
    m_pTaskBarIcon = NULL;
    m_pEventLog = NULL;
#ifdef __WXMAC__
    m_pMacSystemMenu = NULL;
#endif
    m_strBOINCMGRExecutableName = wxEmptyString;
    m_strBOINCMGRRootDirectory = wxEmptyString;
    m_strBOINCMGRDataDirectory = wxEmptyString;
    m_strHostNameArg = wxEmptyString;
    m_strPasswordArg = wxEmptyString;
    m_iRPCPortArg = GUI_RPC_PORT;
    m_strBOINCArguments = wxEmptyString;
    m_bGUIVisible = true;
    m_bDebugSkins = false;
    m_bMultipleInstancesOK = false;
    m_bBOINCMGRAutoStarted = false;
    m_iBOINCMGRDisableAutoStart = 0;
    m_iShutdownCoreClient = 0;
    m_iDisplayExitDialog = 1;
    m_iGUISelected = BOINC_SIMPLEGUI;
    m_bSafeMessageBoxDisplayed = 0;
#ifdef __WXMSW__
    m_hClientLibraryDll = NULL;
#endif


    // Initialize local variables
    int      iErrorCode = 0;
    int      iSelectedLanguage = 0;
    bool     bOpenEventLog = false;
    wxString strDesiredSkinName = wxEmptyString;
    wxString strDialogMessage = wxEmptyString;
    bool     success = false;


    // Configure wxWidgets platform specific code
#ifdef __WXMSW__
    wxSystemOptions::SetOption(wxT("msw.staticbox.optimized-paint"), 0);
#endif
#ifdef __WXMAC__
    // In wxMac-2.8.7, default wxListCtrl::RefreshItem() does not work
    // so use traditional generic implementation.
    // This has been fixed in wxMac-2.8.8, but the Mac native implementation:
    //  - takes 3 times the CPU time as the Mac generic version.
    //  - seems to always redraw entire control even if asked to refresh only one row.
    //  - causes major flicker of progress bars, (probably due to full redraws.)
    wxSystemOptions::SetOption(wxT("mac.listctrl.always_use_generic"), 1);

    AEInstallEventHandler( kCoreEventClass, kAEQuitApplication, NewAEEventHandlerUPP((AEEventHandlerProcPtr)QuitAppleEventHandler), 0, false );

    // Cache the current process serial number
    GetCurrentProcess(&m_psnCurrentProcess);
#endif


    // Commandline parsing is done in wxApp::OnInit()
    if (!wxApp::OnInit()) {
        return false;
    }

    if (g_use_sandbox) {
        wxCHANGE_UMASK(2);  // Set file creation mask to be writable by both user and group
                            // Our umask will be inherited by all our child processes
    }

    // Setup application and company information
    SetAppName(wxT("BOINC Manager"));
    SetVendorName(wxT("Space Sciences Laboratory, U.C. Berkeley"));


    // Initialize the configuration storage module
    m_pConfig = new wxConfig(GetAppName());
    wxConfigBase::Set(m_pConfig);
    wxASSERT(m_pConfig);


    // Restore Application State
    m_pConfig->SetPath(wxT("/"));
    m_pConfig->Read(wxT("AutomaticallyShutdownClient"), &m_iShutdownCoreClient, 0L);
    m_pConfig->Read(wxT("DisplayShutdownClientDialog"), &m_iDisplayExitDialog, 1L);
    m_pConfig->Read(wxT("DisableAutoStart"), &m_iBOINCMGRDisableAutoStart, 0L);
    m_pConfig->Read(wxT("Language"), &iSelectedLanguage, 0L);
    m_pConfig->Read(wxT("GUISelection"), &m_iGUISelected, BOINC_SIMPLEGUI);
    m_pConfig->Read(wxT("EventLogOpen"), &bOpenEventLog);


    // Should we abort the BOINC Manager startup process?
    if (m_bBOINCMGRAutoStarted && m_iBOINCMGRDisableAutoStart) {
        return false;
    }

    // Detect where BOINC Manager executable name.
    DetectExecutableName();

    // Detect where BOINC Manager was installed too.
    DetectRootDirectory();

    // Detect where the BOINC Data files are.
    DetectDataDirectory();


    // Switch the current directory to the BOINC Data directory
    if (!GetDataDirectory().IsEmpty()) {
    	success = wxSetWorkingDirectory(GetDataDirectory());
        if (!success) {
            if (!g_use_sandbox) {
                if (!wxDirExists(GetDataDirectory())) {
                    success = wxMkdir(GetDataDirectory(), 0777);    // Does nothing if dir exists
                }
            }
        }
    }

    if (!success) iErrorCode = -1016;

    // Initialize the BOINC Diagnostics Framework
    int dwDiagnosticsFlags =
        BOINC_DIAG_DUMPCALLSTACKENABLED | 
        BOINC_DIAG_HEAPCHECKENABLED |
        BOINC_DIAG_MEMORYLEAKCHECKENABLED |
#if defined(__WXMSW__) || defined(__WXMAC__)
        BOINC_DIAG_REDIRECTSTDERR |
        BOINC_DIAG_REDIRECTSTDOUT |
#endif
        BOINC_DIAG_TRACETOSTDOUT;

    diagnostics_init(
        dwDiagnosticsFlags,
        "stdoutgui",
        "stderrgui"
    );


    // Enable Logging and Trace Masks
    m_pLog = new wxLogBOINC();
    wxLog::SetActiveTarget(m_pLog);

    m_pLog->AddTraceMask(wxT("Function Start/End"));
    m_pLog->AddTraceMask(wxT("Function Status"));


    // Initialize the internationalization module
#ifdef __WXMSW__
    // On Windows, set all locales for this thread on a per-thread basis
    _configthreadlocale(_ENABLE_PER_THREAD_LOCALE);
#endif
    m_pLocale = new wxLocale();
    wxASSERT(m_pLocale);


    // Look for the localization files by absolute and relative locations.
    //   preference given to the absolute location.
    m_pLocale->Init(iSelectedLanguage);
    if (!m_strBOINCMGRRootDirectory.IsEmpty()) {
        m_pLocale->AddCatalogLookupPathPrefix(
            wxString(m_strBOINCMGRRootDirectory + wxT("locale"))
        );
    }
    m_pLocale->AddCatalogLookupPathPrefix(wxT("locale"));
    m_pLocale->AddCatalog(wxT("BOINC-Manager"));
    m_pLocale->AddCatalog(wxT("BOINC-Client"));
    m_pLocale->AddCatalog(wxT("BOINC-Web"));

    InitSupportedLanguages();


    // Note: JAWS for Windows will only speak the context-sensitive
    // help if you use this help provider:
    wxHelpProvider::Set(new wxHelpControllerHelpProvider());

 
    // Enable known image types
    wxInitAllImageHandlers();

    // Enable additional file system type handlers
    wxFileSystem::AddHandler(new wxMemoryFSHandler);
    m_pInternetFSHandler = new CBOINCInternetFSHandler;
    wxFileSystem::AddHandler(m_pInternetFSHandler);

    // Initialize the skin manager
    m_pSkinManager = new CSkinManager(m_bDebugSkins);
    wxASSERT(m_pSkinManager);


    // Load desired manager skin
    m_pConfig->Read(wxT("Skin"), &strDesiredSkinName, m_pSkinManager->GetDefaultSkinName());
    m_pSkinManager->ReloadSkin(strDesiredSkinName);


#ifdef SANDBOX
    // Make sure owners, groups and permissions are correct for the current setting of g_use_sandbox
    char path_to_error[MAXPATHLEN];
    path_to_error[0] = '\0';
    
    if (!iErrorCode) {
#if (defined(__WXMAC__) && defined(_DEBUG))     // TODO: implement this for other platforms
        // GDB can't attach to applications which are running as a different user   
        //  or group, so fix up data with current user and group during debugging
        if (check_security(g_use_sandbox, true, NULL, 0)) {
            CreateBOINCUsersAndGroups();
            SetBOINCDataOwnersGroupsAndPermissions();
            SetBOINCAppOwnersGroupsAndPermissions(NULL);
        }
#endif
        iErrorCode = check_security(
            g_use_sandbox, true, path_to_error, sizeof(path_to_error)
        );
    }

    if (iErrorCode) {

        ShowApplication(true);

        if (iErrorCode == -1099) {
            strDialogMessage.Printf(
                _("You currently are not authorized to manage the client.\n\nTo run %s as this user, please:\n  - reinstall %s answering \"Yes\" to the question about\n     non-administrative users\n or\n  - contact your administrator to add you to the 'boinc_master'\n     user group."),
                m_pSkinManager->GetAdvanced()->GetApplicationShortName().c_str(),
                m_pSkinManager->GetAdvanced()->GetApplicationShortName().c_str()
            );
        } else {
            strDialogMessage.Printf(
                _("%s ownership or permissions are not set properly; please reinstall %s.\n(Error code %d"),
                m_pSkinManager->GetAdvanced()->GetApplicationShortName().c_str(),
                m_pSkinManager->GetAdvanced()->GetApplicationShortName().c_str(),
                iErrorCode
            );
            if (path_to_error[0]) {
                strDialogMessage += _(" at ");
                strDialogMessage += wxString::FromUTF8(path_to_error);
            }
            strDialogMessage += _(")");
            
            fprintf(stderr, "%ls ownership or permissions are not set properly; please reinstall %ls.\n(Error code %d at %s)", 
                    m_pSkinManager->GetAdvanced()->GetApplicationShortName().c_str(),
                    m_pSkinManager->GetAdvanced()->GetApplicationShortName().c_str(),
                    iErrorCode, path_to_error
                );
        }
        wxMessageDialog* pDlg = new wxMessageDialog(
                                    NULL, 
                                    strDialogMessage, 
                                    m_pSkinManager->GetAdvanced()->GetApplicationName(), 
                                    wxOK
                                    );

        pDlg->ShowModal();
        if (pDlg)
            pDlg->Destroy();

        return false;
    }
#endif      // SANDBOX


#ifdef __WXMSW__
    // Perform any last minute checks that should keep the manager
    // from starting up.
    wxString strRebootPendingFile = 
        GetRootDirectory() + wxFileName::GetPathSeparator() + wxT("RebootPending.txt");
    
    if (wxFile::Exists(strRebootPendingFile)) {
        wxMessageDialog dialog(
            NULL,
            _("A reboot is required in order for BOINC to run properly.\nPlease reboot your computer and try again."),
            _("BOINC Manager"),
            wxOK|wxICON_ERROR
        );

        dialog.ShowModal();
        return false;
    }
#endif

    // Detect if BOINC Manager is already running, if so, bring it into the
    // foreground and then exit.
    if (!m_bMultipleInstancesOK) {
        if (DetectDuplicateInstance()) {
            return false;
        }
    }

    // Initialize the main document
    m_pDocument = new CMainDocument();
    wxASSERT(m_pDocument);

    m_pDocument->OnInit();


    // Is there a condition in which the Simple GUI should not be used?
    if (BOINC_SIMPLEGUI == m_iGUISelected) {
        // Screen too small?
        if (wxGetDisplaySize().GetHeight() < 600) {
            m_iGUISelected = BOINC_ADVANCEDGUI;
        }
    }


    // Initialize the task bar icon
	m_pTaskBarIcon = new CTaskBarIcon(
        m_pSkinManager->GetAdvanced()->GetApplicationName(), 
        m_pSkinManager->GetAdvanced()->GetApplicationIcon(),
        m_pSkinManager->GetAdvanced()->GetApplicationDisconnectedIcon(),
        m_pSkinManager->GetAdvanced()->GetApplicationSnoozeIcon()
    );
    wxASSERT(m_pTaskBarIcon);
#ifdef __WXMAC__
    m_pMacSystemMenu = new CMacSystemMenu(
        m_pSkinManager->GetAdvanced()->GetApplicationName(), 
        m_pSkinManager->GetAdvanced()->GetApplicationIcon(),
        m_pSkinManager->GetAdvanced()->GetApplicationDisconnectedIcon(),
        m_pSkinManager->GetAdvanced()->GetApplicationSnoozeIcon()
    );
    wxASSERT(m_pMacSystemMenu);
#endif


    // Startup the System Idle Detection code
    IdleTrackerAttach();

#ifdef __WXMAC__
    ProcessSerialNumber psn;
    ProcessInfoRec pInfo;
    OSStatus err;
    
    memset(&pInfo, 0, sizeof(pInfo));
    pInfo.processInfoLength = sizeof( ProcessInfoRec );
    err = GetProcessInformation(&m_psnCurrentProcess, &pInfo);
    if (!err) {
        psn = pInfo.processLauncher;
        memset(&pInfo, 0, sizeof(pInfo));
        pInfo.processInfoLength = sizeof( ProcessInfoRec );
        err = GetProcessInformation(&psn, &pInfo);
    }
    // Don't open main window if we were started automatically at login
    if (pInfo.processSignature == 'lgnw') {  // Login Window app
        m_bGUIVisible = false;

        // If the system was just started, we usually get a "Connection 
        // failed" error if we try to connect too soon, so delay a bit.
        sleep(10);
    }
#endif


    // Show the UI
    SetActiveGUI(m_iGUISelected, false);
    if (m_bGUIVisible) {
        SetActiveGUI(m_iGUISelected);
    } else {
        ShowApplication(false);
	}
    
    if(bOpenEventLog) {
        DisplayEventLog(m_bGUIVisible);
        m_pFrame->Raise();
    }
    
    return true;
}


#if (defined(__WXMSW__) && !wxCHECK_VERSION(2, 9, 4))
// Work around a bug in wxWidgets 2.8.x which fails 
// to call OnExit() when Windows is shut down. This
// is supposed to be fixed in wxWidgets 2.9.x.
//
void CBOINCGUIApp::OnEndSession(wxCloseEvent& ) {
    s_bSkipExitConfirmation = true;

    CBOINCBaseFrame* pFrame = wxGetApp().GetFrame();
    wxCommandEvent evt(wxEVT_COMMAND_MENU_SELECTED, wxID_EXIT);
    // The event loop has already been stopped,
    // so we must call OnExit directly
    pFrame->OnExit(evt);
    OnExit();
}
#endif


int CBOINCGUIApp::OnExit() {
    // Shutdown the System Idle Detection code
    IdleTrackerDetach();

    if (m_pDocument) {
        m_pDocument->OnExit();
        delete m_pDocument;
        m_pDocument = NULL;
    }

    // Save Application State
    SaveState();

    if (m_pSkinManager) {
        delete m_pSkinManager;
        m_pSkinManager = NULL;
    }

    if (m_pLocale) {
        delete m_pLocale;
        m_pLocale = NULL;
    }

    if (m_pEventLog) {
        m_pEventLog->Destroy();
        m_pEventLog = NULL;
    }

    diagnostics_finish();

    return wxApp::OnExit();
}


void CBOINCGUIApp::SaveState() {
    // Save Application State
    m_pConfig->SetPath(wxT("/"));
    if (m_pSkinManager) {
        m_pConfig->Write(wxT("Skin"), m_pSkinManager->GetSelectedSkin());
    }
    m_pConfig->Write(wxT("AutomaticallyShutdownClient"), m_iShutdownCoreClient);
    m_pConfig->Write(wxT("DisplayShutdownClientDialog"), m_iDisplayExitDialog);
    m_pConfig->Write(wxT("DisableAutoStart"), m_iBOINCMGRDisableAutoStart);
}


///
/// Pass the command line parameters and discriptions to wxWidgets for displaying.
///
void CBOINCGUIApp::OnInitCmdLine(wxCmdLineParser &parser) {
    wxApp::OnInitCmdLine(parser);
    static const wxCmdLineEntryDesc cmdLineDesc[] = {
        { wxCMD_LINE_SWITCH, wxT("a"), wxT("autostart"), _("BOINC Manager was started by the operating system automatically")},
#if defined(__WXMSW__) || defined(__WXMAC__)
        { wxCMD_LINE_SWITCH, wxT("s"), wxT("systray"), _("Startup BOINC so only the system tray icon is visible")},
#else
        { wxCMD_LINE_OPTION, wxT("e"), wxT("clientdir"), _("Directory containing the BOINC Client executable")},
        { wxCMD_LINE_OPTION, wxT("d"), wxT("datadir"), _("BOINC data directory")},
#endif
        { wxCMD_LINE_OPTION, wxT("n"), wxT("namehost"), _("Host name or IP address")},
        { wxCMD_LINE_OPTION, wxT("g"), wxT("gui_rpc_port"), _("GUI RPC port number")},
        { wxCMD_LINE_OPTION, wxT("p"), wxT("password"), _("Password")},
        { wxCMD_LINE_OPTION, wxT("b"), wxT("boincargs"), _("Startup BOINC with these optional arguments")},
        { wxCMD_LINE_SWITCH, wxT("i"), wxT("insecure"), _("disable BOINC security users and permissions")},
        { wxCMD_LINE_SWITCH, wxT("c"), wxT("checkskins"), _("set skin debugging mode to enable skin manager error messages")},
        { wxCMD_LINE_SWITCH, wxT("m"), wxT("multiple"), _("multiple instances of BOINC Manager allowed")},
#if (defined(__WXMAC__) && defined(_DEBUG))
        { wxCMD_LINE_OPTION, wxT("NSDocumentRevisionsDebugMode"), NULL, _("Not used: workaround for bug in XCode 4.2")},
#endif
        { wxCMD_LINE_NONE}  //DON'T forget this line!!
    };
    parser.SetDesc(cmdLineDesc);
}


///
/// Parse command line parameters.
///
bool CBOINCGUIApp::OnCmdLineParsed(wxCmdLineParser &parser) {
    // Give default processing (-?, --help and --verbose) the chance to do something.
    wxApp::OnCmdLineParsed(parser);
    wxString portNum = wxEmptyString;
    long longPort;
    bool hostNameSpecified = false;
    bool passwordSpecified = false;

    parser.Found(wxT("boincargs"), &m_strBOINCArguments);
    if (parser.Found(wxT("autostart"))) {
        m_bBOINCMGRAutoStarted = true;
    }
#if defined(__WXMSW__) || defined(__WXMAC__)
    if (parser.Found(wxT("systray"))) {
        m_bGUIVisible = false;
    }
#endif
    if (parser.Found(wxT("insecure"))) {
        g_use_sandbox = false;
    }
    if (parser.Found(wxT("checkskins"))) {
        m_bDebugSkins = true;
    }
    if (parser.Found(wxT("multiple"))) {
        m_bMultipleInstancesOK = true;
    }

#if !(defined(__WXMSW__) || defined(__WXMAC__))
    if (!parser.Found(wxT("clientdir"), &m_strBOINCMGRRootDirectory)) {
        m_strBOINCMGRRootDirectory = ::wxGetCwd();
    }
    if (m_strBOINCMGRRootDirectory.Last() != '/') {
        m_strBOINCMGRRootDirectory.Append('/');
    }

    if (!parser.Found(wxT("datadir"), &m_strBOINCMGRDataDirectory)) {
        m_strBOINCMGRDataDirectory = m_strBOINCMGRRootDirectory;
    }
    if (m_strBOINCMGRDataDirectory.Last() != '/') {
        m_strBOINCMGRDataDirectory.Append('/');
    }
#endif    

    if (parser.Found(wxT("namehost"), &m_strHostNameArg)) {
        hostNameSpecified = true;
    } else {
        m_strHostNameArg = wxT("localhost");
    }

     if (parser.Found(wxT("gui_rpc_port"), &portNum)) {
        if (portNum.ToLong(&longPort)) {
            m_iRPCPortArg = longPort;
        } else {
            m_iRPCPortArg = GUI_RPC_PORT;  // conversion failed
        }
    } else {
        m_iRPCPortArg = GUI_RPC_PORT;
    }
    
    if (parser.Found(wxT("password"), &m_strPasswordArg)) {
        passwordSpecified = true;
    } else {
        m_strPasswordArg = wxEmptyString;
    }

    if (hostNameSpecified && passwordSpecified) {
        m_bMultipleInstancesOK = true;
    }
    return true;
}


///
/// Detect if another instance of this application is running.
//  Returns true if there is, otherwise false
///
bool CBOINCGUIApp::DetectDuplicateInstance() {
#ifdef __WXMSW__
    if (CTaskBarIcon::FireAppRestore()) {
        return true;
    }
#endif
#ifdef __WXMAC__
    ProcessSerialNumber PSN;
    int iInstanceID = wxGetApp().IsAnotherInstanceRunning();
    if (iInstanceID) {
        // Bring other instance to the front and exit this instance
        OSStatus err = GetProcessForPID(iInstanceID, &PSN);
        if (!err) SetFrontProcess(&PSN);
        return true;
    }
#endif
    return false;
}


///
/// Determines what name BOINC Manager is called.
///
void CBOINCGUIApp::DetectExecutableName() {
#ifdef __WXMSW__
    TCHAR   szPath[MAX_PATH-1];

    // change the current directory to the boinc install directory
    GetModuleFileName(NULL, szPath, (sizeof(szPath)/sizeof(TCHAR)));
		
    TCHAR *pszProg = _tcsrchr(szPath, '\\');
    if (pszProg) {
        pszProg++;
    }

    // Store the root directory for later use.
    m_strBOINCMGRExecutableName = pszProg;
#endif
}


///
/// Determines where the BOINC Manager is executing from.
///
void CBOINCGUIApp::DetectRootDirectory() {
#ifdef __WXMSW__
    TCHAR   szPath[MAX_PATH-1];

    // change the current directory to the boinc install directory
    GetModuleFileName(NULL, szPath, (sizeof(szPath)/sizeof(TCHAR)));
		
    TCHAR *pszProg = _tcsrchr(szPath, '\\');
    if (pszProg) {
        szPath[pszProg - szPath + 1] = 0;
    }

    // Store the root directory for later use.
    m_strBOINCMGRRootDirectory = szPath;
#endif
}


///
/// Determines where the BOINC data directory is.
///
void CBOINCGUIApp::DetectDataDirectory() {
#ifdef __WXMSW__
    //
    // Determine BOINCMgr Data Directory
    //
	LONG    lReturnValue;
	HKEY    hkSetupHive;
    LPTSTR  lpszRegistryValue = NULL;
	DWORD   dwSize = 0;

    // change the current directory to the boinc data directory if it exists
	lReturnValue = RegOpenKeyEx(
        HKEY_LOCAL_MACHINE, 
        _T("SOFTWARE\\Space Sciences Laboratory, U.C. Berkeley\\BOINC Setup"),
		0, 
        KEY_READ,
        &hkSetupHive
    );
    if (lReturnValue == ERROR_SUCCESS) {
        // How large does our buffer need to be?
        lReturnValue = RegQueryValueEx(
            hkSetupHive,
            _T("DATADIR"),
            NULL,
            NULL,
            NULL,
            &dwSize
        );
        if (lReturnValue != ERROR_FILE_NOT_FOUND) {
            // Allocate the buffer space.
            lpszRegistryValue = (LPTSTR) malloc(dwSize);
            (*lpszRegistryValue) = NULL;

            // Now get the data
            lReturnValue = RegQueryValueEx( 
                hkSetupHive,
                _T("DATADIR"),
                NULL,
                NULL,
                (LPBYTE)lpszRegistryValue,
                &dwSize
            );

            // Store the root directory for later use.
            m_strBOINCMGRDataDirectory = lpszRegistryValue;
        }
    }

    // Cleanup
	if (hkSetupHive) RegCloseKey(hkSetupHive);
    if (lpszRegistryValue) free(lpszRegistryValue);
#endif
#ifdef __WXMAC__
    m_strBOINCMGRDataDirectory = wxT("/Library/Application Support/BOINC Data");
#endif
}


void CBOINCGUIApp::InitSupportedLanguages() {
    wxInt32               iIndex = 0;
    const wxLanguageInfo* liLanguage = NULL;

    // Prepare the array
    m_astrLanguages.Insert(wxEmptyString, 0, wxLANGUAGE_USER_DEFINED+1);

    // These are just special tags so deal with them in a special way
    m_astrLanguages[wxLANGUAGE_DEFAULT]                    = _("(Automatic Detection)");
    m_astrLanguages[wxLANGUAGE_UNKNOWN]                    = _("(Unknown)");
    m_astrLanguages[wxLANGUAGE_USER_DEFINED]               = _("(User Defined)");

    for (iIndex = 0; iIndex <= wxLANGUAGE_USER_DEFINED; iIndex++) {
        liLanguage = wxLocale::GetLanguageInfo(iIndex);
        if (liLanguage) {
            m_astrLanguages[iIndex] = liLanguage->Description;
        }
    }
}


int CBOINCGUIApp::IdleTrackerAttach() {
#ifdef __WXMSW__
    ::attach_idle_monitor();
#endif
    return 0;
}


int CBOINCGUIApp::IdleTrackerDetach() {
#ifdef __WXMSW__
    ::detach_idle_monitor();
#endif
    return 0;
}


void CBOINCGUIApp::OnActivateApp(wxActivateEvent& event) {
#ifdef __WXMAC__
    // Make sure any modal dialog (such as Attach Wizard) ends up in front.
    if (IsModalDialogDisplayed()) {
        event.Skip();
        return;
    }
#endif

    if (event.GetActive()) {
        if (m_pEventLog && !m_pEventLog->IsIconized()) {
            m_pEventLog->Raise();
        }
        if (m_pFrame) m_pFrame->Raise();
    }
    event.Skip();
}


void CBOINCGUIApp::OnRPCFinished( CRPCFinishedEvent& event ) {
    CMainDocument*      pDoc = wxGetApp().GetDocument();
   
    wxASSERT(pDoc);
    wxASSERT(wxDynamicCast(pDoc, CMainDocument));
    
    pDoc->OnRPCComplete(event);
}


int CBOINCGUIApp::UpdateSystemIdleDetection() {
#ifdef __WXMSW__
    return get_idle_tick_count();
#else
    return TRUE;
#endif
}


int CBOINCGUIApp::StartBOINCScreensaverTest() {
#ifdef __WXMSW__
    wxString strExecute = wxEmptyString;
    wxChar   szExecutableDirectory[4096];
    memset(szExecutableDirectory, 0, sizeof(szExecutableDirectory));

    // On Windows the screensaver is located in the Windows directory.
    GetWindowsDirectory(
        szExecutableDirectory,
        (sizeof(szExecutableDirectory) / sizeof(wxChar))
    );

    // Append boinc.scr to the end of the strExecute string and get ready to rock
    strExecute = wxT("\"") + wxString(szExecutableDirectory) + wxT("\\boinc.scr\" /t");
    ::wxExecute(strExecute);
#endif
    return 0;
}


int CBOINCGUIApp::StartBOINCDefaultScreensaverTest() {
#ifdef __WXMSW__
    wxString strExecute = wxEmptyString;
    strExecute = wxT("\"") + m_strBOINCMGRRootDirectory + wxT("\\boincscr.exe\" --test");
    ::wxExecute(strExecute);
#endif
    return 0;
}


// Display the Event Log, it is a modeless dialog not owned by any
// other UI element.
void CBOINCGUIApp::DisplayEventLog(bool bShowWindow) {
    if (m_pEventLog) {
        if (bShowWindow) {
            if (m_pEventLog->IsIconized()) {
                m_pEventLog->Iconize(false);
            }
            m_pEventLog->Raise();
        }
    } else {
        m_pEventLog = new CDlgEventLog();
        if (m_pEventLog) {
            m_pEventLog->Show(bShowWindow);
            if (bShowWindow) {
                m_pEventLog->Raise();
            }
            if (m_pFrame) {
                m_pFrame->UpdateRefreshTimerInterval();
            }
        }
    }
}


void CBOINCGUIApp::OnEventLogClose() {
    m_pEventLog = NULL;
    if (m_pFrame) {
        m_pFrame->UpdateRefreshTimerInterval();
    }
}

    
// The skin has changed and all UI elements need to reload their bitmaps.
//
void CBOINCGUIApp::FireReloadSkin() {
    if (m_pFrame) {
	    m_pFrame->FireReloadSkin();
    }
    if (m_pTaskBarIcon) {
	    m_pTaskBarIcon->FireReloadSkin();
    }
}


bool CBOINCGUIApp::SetActiveGUI(int iGUISelection, bool bShowWindow) {
    wxLogTrace(wxT("Function Start/End"), wxT("CBOINCGUIApp::SetActiveGUI - Function Begin"));
    wxLogTrace(wxT("Function Start/End"), wxT("CBOINCGUIApp::SetActiveGUI - GUI Selection: '%d', Show: %d'"), iGUISelection, (int)bShowWindow);

    CBOINCBaseFrame* pNewFrame = NULL;
    CBOINCBaseFrame* pOldFrame = m_pFrame;
    wxInt32          iTop = 0;
    wxInt32          iLeft = 0;
    wxInt32          iHeight = 0;
    wxInt32          iWidth = 0;


    // Create the new window
    if ((iGUISelection != m_iGUISelected) || !m_pFrame) {

        // Reterieve the desired window state before creating the
        //   desired frames
        if (BOINC_ADVANCEDGUI == iGUISelection) {
            m_pConfig->SetPath(wxT("/"));
            m_pConfig->Read(wxT("YPos"), &iTop, 30);
            m_pConfig->Read(wxT("XPos"), &iLeft, 30);
            m_pConfig->Read(wxT("Width"), &iWidth, 800);
            m_pConfig->Read(wxT("Height"), &iHeight, 600);
        } else {
            m_pConfig->SetPath(wxT("/Simple"));
            m_pConfig->Read(wxT("YPos"), &iTop, 30);
            m_pConfig->Read(wxT("XPos"), &iLeft, 30);

            // We don't save Simple View's width & height since it's 
            // window is not resizable, so don't try to read them
#ifdef __WXMAC__
//            m_pConfig->Read(wxT("Width"), &iWidth, 409);
//            m_pConfig->Read(wxT("Height"), &iHeight, 561);
            iWidth = 409;
            iHeight = 561;
#else
//            m_pConfig->Read(wxT("Width"), &iWidth, 416);
//            m_pConfig->Read(wxT("Height"), &iHeight, 570);
            iWidth = 416;
            iHeight = 570;
#endif
        }


        // Make sure that the new window is going to be visible
        //   on a screen
#ifdef __WXMAC__
    if (!IsWindowOnScreen(iLeft, iTop, iWidth, iHeight)) {
        iTop = iLeft = 30;
    }
#else
	    // If either co-ordinate is less then 0 then set it equal to 0 to ensure
	    // it displays on the screen.
	    if ( iLeft < 0 ) iLeft = 30;
	    if ( iTop < 0 ) iTop = 30;

	    // Read the size of the screen
	    wxInt32 iMaxWidth = wxSystemSettings::GetMetric( wxSYS_SCREEN_X );
	    wxInt32 iMaxHeight = wxSystemSettings::GetMetric( wxSYS_SCREEN_Y );

	    // Max sure that it doesn't go off to the right or bottom
	    if ( iLeft + iWidth > iMaxWidth ) iLeft = iMaxWidth - iWidth;
	    if ( iTop + iHeight > iMaxHeight ) iTop = iMaxHeight - iHeight;
#endif

        // Create the main window
        //
        if (BOINC_ADVANCEDGUI == iGUISelection) {
            // Initialize the advanced gui window
            pNewFrame = new CAdvancedFrame(
                m_pSkinManager->GetAdvanced()->GetApplicationName(), 
                m_pSkinManager->GetAdvanced()->GetApplicationIcon(),
                m_pSkinManager->GetAdvanced()->GetApplicationIcon32(),
                wxPoint(iLeft, iTop),
                wxSize(iWidth, iHeight)
            );
        } else {
            // Initialize the simple gui window
            pNewFrame = new CSimpleFrame(
                m_pSkinManager->GetAdvanced()->GetApplicationName(), 
                m_pSkinManager->GetAdvanced()->GetApplicationIcon(),
                m_pSkinManager->GetAdvanced()->GetApplicationIcon32(),
                wxPoint(iLeft, iTop),
                wxSize(iWidth, iHeight)
            );
        }

        wxASSERT(pNewFrame);

        if (pNewFrame) {
            SetTopWindow(pNewFrame);

            // Store the new frame for future use
            m_pFrame = pNewFrame;

            // Hide the old one if it exists.  We must do this 
            // after updating m_pFrame to prevent Mac OSX from
            // hiding the application
            if (pOldFrame) pOldFrame->Hide();

            // Delete the old one if it exists
            if (pOldFrame) pOldFrame->Destroy();

            if (iGUISelection != m_iGUISelected) {
                m_iGUISelected = iGUISelection;
                m_pConfig->SetPath(wxT("/"));
                m_pConfig->Write(wxT("GUISelection"), iGUISelection);
                m_pConfig->Flush();
            }
        }
    }

    // Show the new frame if needed 
    if (m_pFrame && bShowWindow) {
        if (m_pEventLog) {
            m_pEventLog->Show();
            m_pEventLog->Raise();
#ifdef __WXMSW__
            ::SetForegroundWindow((HWND)m_pEventLog->GetHWND());
#endif
        }

        if (!m_pFrame->IsShown()) {
            m_pFrame->Show();
        }
        if (m_pFrame->IsIconized()) {
            m_pFrame->Maximize(false);
        }
        m_pFrame->Raise();

#ifdef __WXMSW__
        ::SetForegroundWindow((HWND)m_pFrame->GetHWND());
#endif
    }

    wxLogTrace(wxT("Function Start/End"), wxT("CBOINCGUIApp::SetActiveGUI - Function End"));
    return true;
}


int CBOINCGUIApp::ConfirmExit() {
    CSkinAdvanced*  pSkinAdvanced = wxGetApp().GetSkinManager()->GetAdvanced();
    CMainDocument*  pDoc = wxGetApp().GetDocument();
    wxString        strConnectedCompter = wxEmptyString;
    bool            bWasVisible;
    int             retval = 0;

    wxASSERT(pDoc);
    wxASSERT(pSkinAdvanced);
    wxASSERT(wxDynamicCast(pDoc, CMainDocument));
    wxASSERT(wxDynamicCast(pSkinAdvanced, CSkinAdvanced));
    
    pDoc->GetConnectedComputerName(strConnectedCompter);
    if (!pDoc->IsComputerNameLocal(strConnectedCompter)) {
        // Don't shut down remote clients on Manager exit
        return 1;
    }

    // Don't run confirmation dialog if logging out or shutting down Mac, 
    // or if emergency exit from AsyncRPCDlg
    if (s_bSkipExitConfirmation) return 1;

    // Don't run confirmation dialog if second instance of Manager 
    if (IsMgrMultipleInstance()) return 1;

    if (!m_iDisplayExitDialog) {
        // Mac: User doesn't want to display the dialog and just wants to use their previous value.
        // Win & Linux: User doesn't want to display the dialog and wants to shutdown the client.
        return 1;
    }

    bWasVisible = IsApplicationVisible();
    ShowApplication(true);

    CDlgExitMessage dlg(NULL);

    if (!pSkinAdvanced->GetExitMessage().IsEmpty()) {
        dlg.m_DialogExitMessage->SetLabel(pSkinAdvanced->GetExitMessage());
    }

#ifdef __WXMSW__
    if (m_iShutdownCoreClient) {
        dlg.m_DialogShutdownCoreClient->SetValue(TRUE);
    }
#endif

    if (m_iDisplayExitDialog) {
        dlg.m_DialogDisplay->SetValue(FALSE);
    }

    dlg.Fit();
    dlg.Centre();

    if (wxID_OK == dlg.ShowModal()) {
#ifdef __WXMAC__
        s_bSkipExitConfirmation = true;     // Don't ask twice (only affects Mac)
#else
        m_iShutdownCoreClient = dlg.m_DialogShutdownCoreClient->GetValue();
#endif
        m_iDisplayExitDialog = !dlg.m_DialogDisplay->GetValue();
        retval = true;

    }

    if (!bWasVisible) {
        ShowApplication(false);
    }

    return retval;       // User cancelled exit
}


// Use this instead of wxMessageBox from all tab Views to suppress 
// Periodic RPCs.  See comment in CMainDocument::RunPeriodicRPCs()
// for a fuller explanation.
int CBOINCGUIApp::SafeMessageBox(const wxString& message, const wxString& caption, long style,
                 wxWindow *parent, int x, int y )
{
    int retval;
    
    m_bSafeMessageBoxDisplayed++;
    
    retval = wxMessageBox(message, caption, style, parent, x, y);

    m_bSafeMessageBoxDisplayed--;

    return retval;
}


///
/// Determines if another instance of BOINC Manager is running.
///
/// @return
///  true if another instance of BOINC Manager is running, otherwise false.
///
/// Note: will always return false on Win95, Win98, WinME
/// 
int CBOINCGUIApp::IsAnotherInstanceRunning() {
    PROC_MAP pm;
    int retval;
    char myName[256];
    int otherInstanceID = 0;
    int myPid;

    // Look for BOINC Manager in list of all running processes
    retval = procinfo_setup(pm);
    if (retval) return false;     // Should never happen

#ifdef _WIN32
    myPid = (int)GetCurrentProcessId();
#else
    myPid = getpid();
#endif

    // Get the name of this Application
    myName[0] = 0;
    PROC_MAP::iterator i;
    for (i=pm.begin(); i!=pm.end(); i++) {
        PROCINFO& pi = i->second;
        if (pi.id == myPid) {
            strncpy(myName, pi.command, sizeof(myName));
            break;
        }
    }

    if (myName[0] == 0) {
         return false;     // Should never happen
    }
    
    // Search process list for other applications with same name
    for (i=pm.begin(); i!=pm.end(); i++) {
        PROCINFO& pi = i->second;
        if (pi.id == myPid) continue;
        if (!strcmp(pi.command, myName)) {
            otherInstanceID = pi.id;
            break;
        }
    }
    
    return otherInstanceID;
}


///
/// Determines if the current process is visible.
///
/// @return
///  true if the current process is visible, otherwise false.
/// 
bool CBOINCGUIApp::IsApplicationVisible() {
#ifdef __WXMAC__
    if (IsProcessVisible(&m_psnCurrentProcess)) {
        return true;
    }
#endif
    return false;
}

///
/// Shows or hides the current process.
///
/// @param bShow
///   true will show the process, false will hide the process.
///
#ifdef __WXMAC__
void CBOINCGUIApp::ShowApplication(bool bShow) {
    if (bShow) {
        SetFrontProcess(&m_psnCurrentProcess);
    } else {
        ShowHideProcess(&m_psnCurrentProcess, false);
    }
}
#else
void CBOINCGUIApp::ShowApplication(bool) {
}
#endif


bool CBOINCGUIApp::ShowInterface() {
    return SetActiveGUI(m_iGUISelected, true);
}


bool CBOINCGUIApp::ShowNotifications() {
    bool retval = false;

    retval = SetActiveGUI(m_iGUISelected, true);
    if (retval) {
        GetFrame()->FireNotification();
        GetDocument()->UpdateUnreadNoticeState();
    }

    return retval;
}


bool CBOINCGUIApp::IsModalDialogDisplayed() {
    if (m_bSafeMessageBoxDisplayed) return true;
    
    // Search for the dialog by ID since all of BOINC Manager's 
    // dialog IDs are 10000.
    if (wxDynamicCast(wxWindow::FindWindowById(ID_ANYDIALOG), wxDialog)) {
        return true;
    }
    
    if (m_pDocument) {
        if (m_pDocument->WaitingForRPC()) {
            return true;
        }
    }
    return false;
}

void CBOINCGUIApp::DeleteTaskBarIcon() {
    if (m_pTaskBarIcon) {
        delete m_pTaskBarIcon;
    }
    m_pTaskBarIcon = NULL;
}

#ifdef __WXMAC__
void CBOINCGUIApp::DeleteMacSystemMenu() {
    if (m_pMacSystemMenu) {
        delete m_pMacSystemMenu;
    }
    m_pMacSystemMenu = NULL;
}
#endif


// Prevent recursive entry of CMainDocument::RequestRPC()
int CBOINCGUIApp::FilterEvent(wxEvent &event) {
    int theEventType;
    wxDialog* theRPCWaitDialog;
    wxObject* theObject;

    if (!m_pDocument) return -1;

    theEventType = event.GetEventType();

    if (m_pDocument->WaitingForRPC()) {
        // If in RPC Please Wait dialog, reject all command 
        // and timer events except: 
        //  - RPC Finished
        //  - those for that dialog or its children
        //  - Open Manager menu item from system tray icon

        if ((theEventType == wxEVT_COMMAND_MENU_SELECTED) && (event.GetId() == wxID_OPEN)) {
            return -1;        
        }

        theRPCWaitDialog = m_pDocument->GetRPCWaitDialog();
        theObject = event.GetEventObject();
        while (theObject) {
            if (!theObject->IsKindOf(CLASSINFO(wxWindow))) break;
            if (theObject == theRPCWaitDialog) return -1;
            theObject = ((wxWindow*)theObject)->GetParent();
        }
        // Continue with rest of filtering below
    } else {
        // Do limited filtering if shutting down to allow RPC 
        // completion events but not events which start new RPCs
        if (!m_bFilterEvents) return -1;
    }

    // Allow all except Command, Timer and Mouse Moved events
    if (event.IsCommandEvent()) {
        return false;
    }
    
    if (theEventType == wxEVT_TIMER) {
        return false;
    }
    
#ifdef __WXMSW__
    if (theEventType == wxEVT_TASKBAR_MOVE) {
        return false;
    }
#endif
   
    return -1;
}