explain why do you need wxUSE_WXDIB

[wxWidgets.git] / include / wx / process.h

diff --git a/include/wx/process.h b/include/wx/process.h
index cfc4ca9627d806b3fb65d85ebdb1c5696734d7f7..f7071168680ebf16f5dec193b67cc6781e87f0d3 100644 (file)
--- a/include/wx/process.h
+++ b/include/wx/process.h
@@ -6,16 +6,12 @@
 // Created:     24/06/98
 // RCS-ID:      $Id$
 // Copyright:   (c) 1998 Guilhem Lavaux
-// Licence:     wxWindows license
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifndef _WX_PROCESSH__
 #define _WX_PROCESSH__
 
-#ifdef __GNUG__
-    #pragma interface "process.h"
-#endif
-
 #include "wx/event.h"
 
 #if wxUSE_STREAMS
@@ -24,18 +20,45 @@
 
 #include "wx/utils.h"       // for wxSignal
 
+// the wxProcess creation flags
+enum
+{
+    // no redirection
+    wxPROCESS_DEFAULT = 0,
+
+    // redirect the IO of the child process
+    wxPROCESS_REDIRECT = 1
+};
+
 // ----------------------------------------------------------------------------
 // A wxProcess object should be passed to wxExecute - than its OnTerminate()
 // function will be called when the process terminates.
 // ----------------------------------------------------------------------------
 
-class WXDLLEXPORT wxProcess : public wxEvtHandler
+class WXDLLIMPEXP_BASE wxProcess : public wxEvtHandler
 {
 public:
-    wxProcess(wxEvtHandler *parent = (wxEvtHandler *) NULL, int id = -1)
-        { Init(parent, id, FALSE); }
-    wxProcess(wxEvtHandler *parent, bool redirect)
-        { Init(parent, -1, redirect); }
+    // kill the process with the given PID
+    static wxKillError Kill(int pid, wxSignal sig = wxSIGTERM, int flags = wxKILL_NOCHILDREN);
+
+    // test if the given process exists
+    static bool Exists(int pid);
+
+    // this function replaces the standard popen() one: it launches a process
+    // asynchronously and allows the caller to get the streams connected to its
+    // std{in|out|err}
+    //
+    // on error NULL is returned, in any case the process object will be
+    // deleted automatically when the process terminates and should *not* be
+    // deleted by the caller
+    static wxProcess *Open(const wxString& cmd, int flags = wxEXEC_ASYNC);
+
+
+    // ctors
+    wxProcess(wxEvtHandler *parent = (wxEvtHandler *) NULL, int nId = wxID_ANY)
+        { Init(parent, nId, wxPROCESS_DEFAULT); }
+
+    wxProcess(int flags) { Init(NULL, wxID_ANY, flags); }
 
     virtual ~wxProcess();
 
@@ -45,7 +68,7 @@ public:
     // call this before passing the object to wxExecute() to redirect the
     // launched process stdin/stdout, then use GetInputStream() and
     // GetOutputStream() to get access to them
-    void Redirect() { m_redirect = TRUE; }
+    void Redirect() { m_redirect = true; }
     bool IsRedirected() const { return m_redirect; }
 
     // detach from the parent - should be called by the parent if it's deleted
@@ -61,24 +84,32 @@ public:
     // close the output stream indicating that nothing more will be written
     void CloseOutput() { delete m_outputStream; m_outputStream = NULL; }
 
+    // return true if the child process stdout is not closed
+    bool IsInputOpened() const;
+
+    // return true if any input is available on the child process stdout/err
+    bool IsInputAvailable() const;
+    bool IsErrorAvailable() const;
+
     // implementation only (for wxExecute)
-    void SetPipeStreams(wxInputStream *inStream,
-                        wxOutputStream *outStream,
+    //
+    // NB: the streams passed here should correspond to the child process
+    //     stdout, stdin and stderr and here the normal naming convention is
+    //     used unlike elsewhere in this class
+    void SetPipeStreams(wxInputStream *outStream,
+                        wxOutputStream *inStream,
                         wxInputStream *errStream);
 #endif // wxUSE_STREAMS
 
-    // kill the process with the given PID
-    static wxKillError Kill(int pid, wxSignal sig = wxSIGTERM);
-
-    // test if the given process exists
-    static bool Exists(int pid);
-
 protected:
-    void Init(wxEvtHandler *parent, int id, bool redirect);
+    void Init(wxEvtHandler *parent, int id, int flags);
 
     int m_id;
 
 #if wxUSE_STREAMS
+    // these streams are connected to stdout, stderr and stdin of the child
+    // process respectively (yes, m_inputStream corresponds to stdout -- very
+    // confusing but too late to change now)
     wxInputStream  *m_inputStream,
                    *m_errorStream;
     wxOutputStream *m_outputStream;
@@ -87,6 +118,7 @@ protected:
     bool m_redirect;
 
     DECLARE_DYNAMIC_CLASS(wxProcess)
+    DECLARE_NO_COPY_CLASS(wxProcess)
 };
 
 // ----------------------------------------------------------------------------
@@ -94,13 +126,13 @@ protected:
 // ----------------------------------------------------------------------------
 
 BEGIN_DECLARE_EVENT_TYPES()
-    DECLARE_EVENT_TYPE(wxEVT_END_PROCESS, 440)
+    DECLARE_EXPORTED_EVENT_TYPE(WXDLLIMPEXP_BASE, wxEVT_END_PROCESS, 440)
 END_DECLARE_EVENT_TYPES()
 
-class WXDLLEXPORT wxProcessEvent : public wxEvent
+class WXDLLIMPEXP_BASE wxProcessEvent : public wxEvent
 {
 public:
-    wxProcessEvent(int id = 0, int pid = 0, int exitcode = 0) : wxEvent(id)
+    wxProcessEvent(int nId = 0, int pid = 0, int exitcode = 0) : wxEvent(nId)
     {
         m_eventType = wxEVT_END_PROCESS;
         m_pid = pid;
@@ -114,20 +146,22 @@ public:
         // the exit code
     int GetExitCode() { return m_exitcode; }
 
+    // implement the base class pure virtual
+    virtual wxEvent *Clone() const { return new wxProcessEvent(*this); }
+
 public:
-    int m_pid, m_exitcode;
+    int m_pid,
+        m_exitcode;
 
-    DECLARE_DYNAMIC_CLASS(wxProcessEvent)
+    DECLARE_DYNAMIC_CLASS_NO_ASSIGN(wxProcessEvent)
 };
 
 typedef void (wxEvtHandler::*wxProcessEventFunction)(wxProcessEvent&);
 
+#define wxProcessEventHandler(func) \
+    (wxObjectEventFunction)(wxEventFunction)wxStaticCastEvent(wxProcessEventFunction, &func)
+
 #define EVT_END_PROCESS(id, func) \
-   DECLARE_EVENT_TABLE_ENTRY( \
-           wxEVT_END_PROCESS, id, -1, \
-           (wxObjectEventFunction) \
-           (wxEventFunction) \
-           (wxProcessEventFunction) & func, NULL),
+   wx__DECLARE_EVT1(wxEVT_END_PROCESS, id, wxProcessEventHandler(func))
 
-#endif
-    // _WX_PROCESSH__
+#endif // _WX_PROCESSH__