#include "wx/meta/convertible.h"
#endif
+// Currently VC6 and VC7 are known to not be able to compile CallAfter() code,
+// so disable it for them.
+#if !defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(8)
+ #include "wx/meta/removeref.h"
+
+ #define wxHAS_CALL_AFTER
+#endif
+
// ----------------------------------------------------------------------------
// forward declarations
// ----------------------------------------------------------------------------
// Need events declared to do this
class WXDLLIMPEXP_FWD_BASE wxIdleEvent;
class WXDLLIMPEXP_FWD_BASE wxThreadEvent;
+class WXDLLIMPEXP_FWD_BASE wxAsyncMethodCallEvent;
class WXDLLIMPEXP_FWD_CORE wxCommandEvent;
class WXDLLIMPEXP_FWD_CORE wxMouseEvent;
class WXDLLIMPEXP_FWD_CORE wxFocusEvent;
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_COMMAND_COMBOBOX_DROPDOWN, wxCommandEvent);
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_COMMAND_COMBOBOX_CLOSEUP, wxCommandEvent);
- // Thread events
+ // Thread and asynchronous method call events
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_BASE, wxEVT_THREAD, wxThreadEvent);
+wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_BASE, wxEVT_ASYNC_METHOD_CALL, wxAsyncMethodCallEvent);
// Mouse event types
wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_LEFT_DOWN, wxMouseEvent);
int GetId() const { return m_id; }
void SetId(int Id) { m_id = Id; }
+ // Returns the user data optionally associated with the event handler when
+ // using Connect() or Bind().
+ wxObject *GetEventUserData() const { return m_callbackUserData; }
+
// Can instruct event processor that we wish to ignore this event
// (treat as if the event table entry had not been found): this must be done
// to allow the event processing by the base classes (calling event.Skip()
};
+// Asynchronous method call events: these event are processed by wxEvtHandler
+// itself and result in a call to its Execute() method which simply calls the
+// specified method. The difference with a simple method call is that this is
+// done asynchronously, i.e. at some later time, instead of immediately when
+// the event object is constructed.
+
+#ifdef wxHAS_CALL_AFTER
+
+// This is a base class used to process all method calls.
+class wxAsyncMethodCallEvent : public wxEvent
+{
+public:
+ wxAsyncMethodCallEvent(wxObject* object)
+ : wxEvent(wxID_ANY, wxEVT_ASYNC_METHOD_CALL)
+ {
+ SetEventObject(object);
+ }
+
+ wxAsyncMethodCallEvent(const wxAsyncMethodCallEvent& other)
+ : wxEvent(other)
+ {
+ }
+
+ virtual void Execute() = 0;
+};
+
+// This is a version for calling methods without parameters.
+template <typename T>
+class wxAsyncMethodCallEvent0 : public wxAsyncMethodCallEvent
+{
+public:
+ typedef T ObjectType;
+ typedef void (ObjectType::*MethodType)();
+
+ wxAsyncMethodCallEvent0(ObjectType* object,
+ MethodType method)
+ : wxAsyncMethodCallEvent(object),
+ m_object(object),
+ m_method(method)
+ {
+ }
+
+ wxAsyncMethodCallEvent0(const wxAsyncMethodCallEvent0& other)
+ : wxAsyncMethodCallEvent(other),
+ m_object(other.m_object),
+ m_method(other.m_method)
+ {
+ }
+
+ virtual wxEvent *Clone() const
+ {
+ return new wxAsyncMethodCallEvent0(*this);
+ }
+
+ virtual void Execute()
+ {
+ (m_object->*m_method)();
+ }
+
+private:
+ ObjectType* const m_object;
+ const MethodType m_method;
+};
+
+// This is a version for calling methods with a single parameter.
+template <typename T, typename T1>
+class wxAsyncMethodCallEvent1 : public wxAsyncMethodCallEvent
+{
+public:
+ typedef T ObjectType;
+ typedef void (ObjectType::*MethodType)(T1 x1);
+ typedef typename wxRemoveRef<T1>::type ParamType1;
+
+ wxAsyncMethodCallEvent1(ObjectType* object,
+ MethodType method,
+ const ParamType1& x1)
+ : wxAsyncMethodCallEvent(object),
+ m_object(object),
+ m_method(method),
+ m_param1(x1)
+ {
+ }
+
+ wxAsyncMethodCallEvent1(const wxAsyncMethodCallEvent1& other)
+ : wxAsyncMethodCallEvent(other),
+ m_object(other.m_object),
+ m_method(other.m_method),
+ m_param1(other.m_param1)
+ {
+ }
+
+ virtual wxEvent *Clone() const
+ {
+ return new wxAsyncMethodCallEvent1(*this);
+ }
+
+ virtual void Execute()
+ {
+ (m_object->*m_method)(m_param1);
+ }
+
+private:
+ ObjectType* const m_object;
+ const MethodType m_method;
+ const ParamType1 m_param1;
+};
+
+// This is a version for calling methods with two parameters.
+template <typename T, typename T1, typename T2>
+class wxAsyncMethodCallEvent2 : public wxAsyncMethodCallEvent
+{
+public:
+ typedef T ObjectType;
+ typedef void (ObjectType::*MethodType)(T1 x1, T2 x2);
+ typedef typename wxRemoveRef<T1>::type ParamType1;
+ typedef typename wxRemoveRef<T2>::type ParamType2;
+
+ wxAsyncMethodCallEvent2(ObjectType* object,
+ MethodType method,
+ const ParamType1& x1,
+ const ParamType2& x2)
+ : wxAsyncMethodCallEvent(object),
+ m_object(object),
+ m_method(method),
+ m_param1(x1),
+ m_param2(x2)
+ {
+ }
+
+ wxAsyncMethodCallEvent2(const wxAsyncMethodCallEvent2& other)
+ : wxAsyncMethodCallEvent(other),
+ m_object(other.m_object),
+ m_method(other.m_method),
+ m_param1(other.m_param1),
+ m_param2(other.m_param2)
+ {
+ }
+
+ virtual wxEvent *Clone() const
+ {
+ return new wxAsyncMethodCallEvent2(*this);
+ }
+
+ virtual void Execute()
+ {
+ (m_object->*m_method)(m_param1, m_param2);
+ }
+
+private:
+ ObjectType* const m_object;
+ const MethodType m_method;
+ const ParamType1 m_param1;
+ const ParamType2 m_param2;
+};
+
+#endif // wxHAS_CALL_AFTER
+
+
#if wxUSE_GUI
wxEventBasicPayloadMixin(event),
m_clientData(event.m_clientData),
m_clientObject(event.m_clientObject)
- { }
+ {
+ // Because GetString() can retrieve the string text only on demand, we
+ // need to copy it explicitly.
+ if ( m_cmdString.empty() )
+ m_cmdString = event.GetString();
+ }
// Set/Get client data from controls
void SetClientData(void* clientData) { m_clientData = clientData; }
protected:
// Init the hash table with the entries of the static event table.
void InitHashTable();
- // Helper funtion of InitHashTable() to insert 1 entry into the hash table.
+ // Helper function of InitHashTable() to insert 1 entry into the hash table.
void AddEntry(const wxEventTableEntry &entry);
// Allocate and init with null pointers the base hash table.
void AllocEventTypeTable(size_t size);
// NOTE: uses AddPendingEvent(); call only from secondary threads
#endif
+#ifdef wxHAS_CALL_AFTER
+ // Asynchronous method calls: these methods schedule the given method
+ // pointer for a later call (during the next idle event loop iteration).
+ //
+ // Notice that the method is called on this object itself, so the object
+ // CallAfter() is called on must have the correct dynamic type.
+ //
+ // These method can be used from another thread.
+
+ template <typename T>
+ void CallAfter(void (T::*method)())
+ {
+ QueueEvent(
+ new wxAsyncMethodCallEvent0<T>(static_cast<T*>(this), method)
+ );
+ }
+
+ // Notice that we use P1 and not T1 for the parameter to allow passing
+ // parameters that are convertible to the type taken by the method
+ // instead of being exactly the same, to be closer to the usual method call
+ // semantics.
+ template <typename T, typename T1, typename P1>
+ void CallAfter(void (T::*method)(T1 x1), P1 x1)
+ {
+ QueueEvent(
+ new wxAsyncMethodCallEvent1<T, T1>(
+ static_cast<T*>(this), method, x1)
+ );
+ }
+
+ template <typename T, typename T1, typename T2, typename P1, typename P2>
+ void CallAfter(void (T::*method)(T1 x1, T2 x2), P1 x1, P2 x2)
+ {
+ QueueEvent(
+ new wxAsyncMethodCallEvent2<T, T1, T2>(
+ static_cast<T*>(this), method, x1, x2)
+ );
+ }
+#endif // wxHAS_CALL_AFTER
+
// Connecting and disconnecting
// ----------------------------
projects / wxWidgets.git / blobdiff