202 lines
8.1 KiB
C
202 lines
8.1 KiB
C
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/////////////////////////////////////////////////////////////////////////////
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// Name: wx/dialup.h
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// Purpose: Network related wxWidgets classes and functions
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 07.07.99
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// RCS-ID: $Id: dialup.h 58757 2009-02-08 11:45:59Z VZ $
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// Copyright: (c) Vadim Zeitlin
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_DIALUP_H
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#define _WX_DIALUP_H
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#if wxUSE_DIALUP_MANAGER
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#include "wx/event.h"
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// ----------------------------------------------------------------------------
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// misc
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_FWD_BASE wxArrayString;
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#define WXDIALUP_MANAGER_DEFAULT_BEACONHOST wxT("www.yahoo.com")
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// ----------------------------------------------------------------------------
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// A class which groups functions dealing with connecting to the network from a
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// workstation using dial-up access to the net. There is at most one instance
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// of this class in the program accessed via GetDialUpManager().
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// ----------------------------------------------------------------------------
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/* TODO
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*
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* 1. more configurability for Unix: i.e. how to initiate the connection, how
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* to check for online status, &c.
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* 2. a function to enumerate all connections (ISPs) and show a dialog in
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* Dial() allowing to choose between them if no ISP given
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* 3. add an async version of dialing functions which notify the caller about
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* the progress (or may be even start another thread to monitor it)
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* 4. the static creation/accessor functions are not MT-safe - but is this
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* really crucial? I think we may suppose they're always called from the
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* main thread?
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*/
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class WXDLLIMPEXP_CORE wxDialUpManager
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{
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public:
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// this function should create and return the object of the
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// platform-specific class derived from wxDialUpManager. It's implemented
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// in the platform-specific source files.
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static wxDialUpManager *Create();
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// could the dialup manager be initialized correctly? If this function
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// returns false, no other functions will work neither, so it's a good idea
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// to call this function and check its result before calling any other
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// wxDialUpManager methods
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virtual bool IsOk() const = 0;
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// virtual dtor for any base class
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virtual ~wxDialUpManager() { }
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// operations
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// ----------
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// fills the array with the names of all possible values for the first
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// parameter to Dial() on this machine and returns their number (may be 0)
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virtual size_t GetISPNames(wxArrayString& names) const = 0;
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// dial the given ISP, use username and password to authentificate
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//
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// if no nameOfISP is given, the function will select the default one
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//
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// if no username/password are given, the function will try to do without
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// them, but will ask the user if really needed
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//
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// if async parameter is false, the function waits until the end of dialing
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// and returns true upon successful completion.
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// if async is true, the function only initiates the connection and returns
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// immediately - the result is reported via events (an event is sent
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// anyhow, but if dialing failed it will be a DISCONNECTED one)
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virtual bool Dial(const wxString& nameOfISP = wxEmptyString,
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const wxString& username = wxEmptyString,
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const wxString& password = wxEmptyString,
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bool async = true) = 0;
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// returns true if (async) dialing is in progress
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virtual bool IsDialing() const = 0;
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// cancel dialing the number initiated with Dial(async = true)
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// NB: this won't result in DISCONNECTED event being sent
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virtual bool CancelDialing() = 0;
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// hang up the currently active dial up connection
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virtual bool HangUp() = 0;
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// online status
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// -------------
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// returns true if the computer has a permanent network connection (i.e. is
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// on a LAN) and so there is no need to use Dial() function to go online
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//
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// NB: this functions tries to guess the result and it is not always
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// guaranteed to be correct, so it's better to ask user for
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// confirmation or give him a possibility to override it
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virtual bool IsAlwaysOnline() const = 0;
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// returns true if the computer is connected to the network: under Windows,
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// this just means that a RAS connection exists, under Unix we check that
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// the "well-known host" (as specified by SetWellKnownHost) is reachable
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virtual bool IsOnline() const = 0;
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// sometimes the built-in logic for determining the online status may fail,
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// so, in general, the user should be allowed to override it. This function
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// allows to forcefully set the online status - whatever our internal
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// algorithm may think about it.
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virtual void SetOnlineStatus(bool isOnline = true) = 0;
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// set misc wxDialUpManager options
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// --------------------------------
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// enable automatical checks for the connection status and sending of
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// wxEVT_DIALUP_CONNECTED/wxEVT_DIALUP_DISCONNECTED events. The interval
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// parameter is only for Unix where we do the check manually: under
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// Windows, the notification about the change of connection status is
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// instantenous.
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//
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// Returns false if couldn't set up automatic check for online status.
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virtual bool EnableAutoCheckOnlineStatus(size_t nSeconds = 60) = 0;
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// disable automatic check for connection status change - notice that the
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// wxEVT_DIALUP_XXX events won't be sent any more neither.
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virtual void DisableAutoCheckOnlineStatus() = 0;
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// additional Unix-only configuration
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// ----------------------------------
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// under Unix, the value of well-known host is used to check whether we're
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// connected to the internet. It's unused under Windows, but this function
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// is always safe to call. The default value is www.yahoo.com.
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virtual void SetWellKnownHost(const wxString& hostname,
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int portno = 80) = 0;
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// Sets the commands to start up the network and to hang up again. Used by
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// the Unix implementations only.
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virtual void
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SetConnectCommand(const wxString& commandDial = wxT("/usr/bin/pon"),
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const wxString& commandHangup = wxT("/usr/bin/poff")) = 0;
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};
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// ----------------------------------------------------------------------------
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// wxDialUpManager events
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_FWD_CORE wxDialUpEvent;
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wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_DIALUP_CONNECTED, wxDialUpEvent );
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wxDECLARE_EXPORTED_EVENT( WXDLLIMPEXP_CORE, wxEVT_DIALUP_DISCONNECTED, wxDialUpEvent );
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// the event class for the dialup events
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class WXDLLIMPEXP_CORE wxDialUpEvent : public wxEvent
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{
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public:
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wxDialUpEvent(bool isConnected, bool isOwnEvent) : wxEvent(isOwnEvent)
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{
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SetEventType(isConnected ? wxEVT_DIALUP_CONNECTED
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: wxEVT_DIALUP_DISCONNECTED);
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}
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// is this a CONNECTED or DISCONNECTED event?
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bool IsConnectedEvent() const
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{ return GetEventType() == wxEVT_DIALUP_CONNECTED; }
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// does this event come from wxDialUpManager::Dial() or from some extrenal
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// process (i.e. does it result from our own attempt to establish the
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// connection)?
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bool IsOwnEvent() const { return m_id != 0; }
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// implement the base class pure virtual
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virtual wxEvent *Clone() const { return new wxDialUpEvent(*this); }
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private:
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wxDECLARE_NO_ASSIGN_CLASS(wxDialUpEvent);
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};
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// the type of dialup event handler function
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typedef void (wxEvtHandler::*wxDialUpEventFunction)(wxDialUpEvent&);
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#define wxDialUpEventHandler(func) \
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wxEVENT_HANDLER_CAST(wxDialUpEventFunction, func)
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// macros to catch dialup events
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#define EVT_DIALUP_CONNECTED(func) \
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wx__DECLARE_EVT0(wxEVT_DIALUP_CONNECTED, wxDialUpEventHandler(func))
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#define EVT_DIALUP_DISCONNECTED(func) \
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wx__DECLARE_EVT0(wxEVT_DIALUP_DISCONNECTED, wxDialUpEventHandler(func))
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#endif // wxUSE_DIALUP_MANAGER
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#endif // _WX_DIALUP_H
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