+wxDECLARE_EXPORTED_EVENT(WXDLLIMPEXP_CORE, wxEVT_TEXT, wxCommandEvent);
+
+
+// ----------------------------------------------------------------------------
+// wxEvent(-derived) classes
+// ----------------------------------------------------------------------------
+
+// the predefined constants for the number of times we propagate event
+// upwards window child-parent chain
+enum wxEventPropagation
+{
+ // don't propagate it at all
+ wxEVENT_PROPAGATE_NONE = 0,
+
+ // propagate it until it is processed
+ wxEVENT_PROPAGATE_MAX = INT_MAX
+};
+
+// The different categories for a wxEvent; see wxEvent::GetEventCategory.
+// NOTE: they are used as OR-combinable flags by wxEventLoopBase::YieldFor
+enum wxEventCategory
+{
+ // this is the category for those events which are generated to update
+ // the appearance of the GUI but which (usually) do not comport data
+ // processing, i.e. which do not provide input or output data
+ // (e.g. size events, scroll events, etc).
+ // They are events NOT directly generated by the user's input devices.
+ wxEVT_CATEGORY_UI = 1,
+
+ // this category groups those events which are generated directly from the
+ // user through input devices like mouse and keyboard and usually result in
+ // data to be processed from the application.
+ // (e.g. mouse clicks, key presses, etc)
+ wxEVT_CATEGORY_USER_INPUT = 2,
+
+ // this category is for wxSocketEvent
+ wxEVT_CATEGORY_SOCKET = 4,
+
+ // this category is for wxTimerEvent
+ wxEVT_CATEGORY_TIMER = 8,
+
+ // this category is for any event used to send notifications from the
+ // secondary threads to the main one or in general for notifications among
+ // different threads (which may or may not be user-generated)
+ wxEVT_CATEGORY_THREAD = 16,
+
+
+ // implementation only
+
+ // used in the implementations of wxEventLoopBase::YieldFor
+ wxEVT_CATEGORY_UNKNOWN = 32,
+
+ // a special category used as an argument to wxEventLoopBase::YieldFor to indicate that
+ // Yield() should leave all wxEvents on the queue while emptying the native event queue
+ // (native events will be processed but the wxEvents they generate will be queued)
+ wxEVT_CATEGORY_CLIPBOARD = 64,
+
+
+ // shortcut masks
+
+ // this category groups those events which are emitted in response to
+ // events of the native toolkit and which typically are not-"delayable".
+ wxEVT_CATEGORY_NATIVE_EVENTS = wxEVT_CATEGORY_UI|wxEVT_CATEGORY_USER_INPUT,
+
+ // used in wxEventLoopBase::YieldFor to specify all event categories should be processed:
+ wxEVT_CATEGORY_ALL =
+ wxEVT_CATEGORY_UI|wxEVT_CATEGORY_USER_INPUT|wxEVT_CATEGORY_SOCKET| \
+ wxEVT_CATEGORY_TIMER|wxEVT_CATEGORY_THREAD|wxEVT_CATEGORY_UNKNOWN| \
+ wxEVT_CATEGORY_CLIPBOARD
+};
+
+/*
+ * wxWidgets events, covering all interesting things that might happen
+ * (button clicking, resizing, setting text in widgets, etc.).
+ *
+ * For each completely new event type, derive a new event class.
+ * An event CLASS represents a C++ class defining a range of similar event TYPES;
+ * examples are canvas events, panel item command events.
+ * An event TYPE is a unique identifier for a particular system event,
+ * such as a button press or a listbox deselection.
+ *
+ */
+
+class WXDLLIMPEXP_BASE wxEvent : public wxObject
+{
+public:
+ wxEvent(int winid = 0, wxEventType commandType = wxEVT_NULL );
+
+ void SetEventType(wxEventType typ) { m_eventType = typ; }
+ wxEventType GetEventType() const { return m_eventType; }
+
+ wxObject *GetEventObject() const { return m_eventObject; }
+ void SetEventObject(wxObject *obj) { m_eventObject = obj; }
+
+ long GetTimestamp() const { return m_timeStamp; }
+ void SetTimestamp(long ts = 0) { m_timeStamp = ts; }
+
+ 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()
+ // is the analog of calling the base class version of a virtual function)
+ void Skip(bool skip = true) { m_skipped = skip; }
+ bool GetSkipped() const { return m_skipped; }
+
+ // This function is used to create a copy of the event polymorphically and
+ // all derived classes must implement it because otherwise wxPostEvent()
+ // for them wouldn't work (it needs to do a copy of the event)
+ virtual wxEvent *Clone() const = 0;
+
+ // this function is used to selectively process events in wxEventLoopBase::YieldFor
+ // NOTE: by default it returns wxEVT_CATEGORY_UI just because the major
+ // part of wxWidgets events belong to that category.
+ virtual wxEventCategory GetEventCategory() const
+ { return wxEVT_CATEGORY_UI; }
+
+ // Implementation only: this test is explicitly anti OO and this function
+ // exists only for optimization purposes.
+ bool IsCommandEvent() const { return m_isCommandEvent; }
+
+ // Determine if this event should be propagating to the parent window.
+ bool ShouldPropagate() const
+ { return m_propagationLevel != wxEVENT_PROPAGATE_NONE; }
+
+ // Stop an event from propagating to its parent window, returns the old
+ // propagation level value
+ int StopPropagation()
+ {
+ int propagationLevel = m_propagationLevel;
+ m_propagationLevel = wxEVENT_PROPAGATE_NONE;
+ return propagationLevel;
+ }
+
+ // Resume the event propagation by restoring the propagation level
+ // (returned by StopPropagation())
+ void ResumePropagation(int propagationLevel)
+ {
+ m_propagationLevel = propagationLevel;
+ }
+
+
+ // This is for internal use only and is only called by
+ // wxEvtHandler::ProcessEvent() to check whether it's the first time this
+ // event is being processed
+ bool WasProcessed()
+ {
+ if ( m_wasProcessed )
+ return true;
+
+ m_wasProcessed = true;
+
+ return false;
+ }
+
+ // This is for internal use only and is used for setting, testing and
+ // resetting of m_willBeProcessedAgain flag.
+ void SetWillBeProcessedAgain()
+ {
+ m_willBeProcessedAgain = true;
+ }
+
+ bool WillBeProcessedAgain()
+ {
+ if ( m_willBeProcessedAgain )
+ {
+ m_willBeProcessedAgain = false;
+ return true;
+ }
+
+ return false;
+ }
+
+ // This is also used only internally by ProcessEvent() to check if it
+ // should process the event normally or only restrict the search for the
+ // event handler to this object itself.
+ bool ShouldProcessOnlyIn(wxEvtHandler *h) const
+ {
+ return h == m_handlerToProcessOnlyIn;
+ }
+
+ // Called to indicate that the result of ShouldProcessOnlyIn() wasn't taken
+ // into account. The existence of this function may seem counterintuitive
+ // but unfortunately it's needed by wxScrollHelperEvtHandler, see comments
+ // there. Don't even think of using this in your own code, this is a gross
+ // hack and is only needed because of wx complicated history and should
+ // never be used anywhere else.
+ void DidntHonourProcessOnlyIn()
+ {
+ m_handlerToProcessOnlyIn = NULL;
+ }
+
+protected:
+ wxObject* m_eventObject;
+ wxEventType m_eventType;
+ long m_timeStamp;
+ int m_id;
+
+public:
+ // m_callbackUserData is for internal usage only
+ wxObject* m_callbackUserData;
+
+private:
+ // If this handler
+ wxEvtHandler *m_handlerToProcessOnlyIn;
+
+protected:
+ // the propagation level: while it is positive, we propagate the event to
+ // the parent window (if any)
+ int m_propagationLevel;
+
+ bool m_skipped;
+ bool m_isCommandEvent;
+
+ // initially false but becomes true as soon as WasProcessed() is called for
+ // the first time, as this is done only by ProcessEvent() it explains the
+ // variable name: it becomes true after ProcessEvent() was called at least
+ // once for this event
+ bool m_wasProcessed;
+
+ // This one is initially false too, but can be set to true to indicate that
+ // the event will be passed to another handler if it's not processed in
+ // this one.
+ bool m_willBeProcessedAgain;
+
+protected:
+ wxEvent(const wxEvent&); // for implementing Clone()
+ wxEvent& operator=(const wxEvent&); // for derived classes operator=()
+
+private:
+ // it needs to access our m_propagationLevel
+ friend class WXDLLIMPEXP_FWD_BASE wxPropagateOnce;
+
+ // and this one needs to access our m_handlerToProcessOnlyIn
+ friend class WXDLLIMPEXP_FWD_BASE wxEventProcessInHandlerOnly;
+
+
+ DECLARE_ABSTRACT_CLASS(wxEvent)
+};
+
+/*
+ * Helper class to temporarily change an event not to propagate.
+ */
+class WXDLLIMPEXP_BASE wxPropagationDisabler
+{
+public:
+ wxPropagationDisabler(wxEvent& event) : m_event(event)
+ {
+ m_propagationLevelOld = m_event.StopPropagation();
+ }
+
+ ~wxPropagationDisabler()
+ {
+ m_event.ResumePropagation(m_propagationLevelOld);
+ }
+
+private:
+ wxEvent& m_event;
+ int m_propagationLevelOld;
+
+ wxDECLARE_NO_COPY_CLASS(wxPropagationDisabler);
+};
+
+/*
+ * Another one to temporarily lower propagation level.
+ */
+class WXDLLIMPEXP_BASE wxPropagateOnce
+{
+public:
+ wxPropagateOnce(wxEvent& event) : m_event(event)
+ {
+ wxASSERT_MSG( m_event.m_propagationLevel > 0,
+ wxT("shouldn't be used unless ShouldPropagate()!") );
+
+ m_event.m_propagationLevel--;
+ }
+
+ ~wxPropagateOnce()
+ {
+ m_event.m_propagationLevel++;
+ }
+
+private:
+ wxEvent& m_event;
+
+ wxDECLARE_NO_COPY_CLASS(wxPropagateOnce);
+};
+
+// A helper object used to temporarily make wxEvent::ShouldProcessOnlyIn()
+// return true for the handler passed to its ctor.
+class wxEventProcessInHandlerOnly
+{
+public:
+ wxEventProcessInHandlerOnly(wxEvent& event, wxEvtHandler *handler)
+ : m_event(event),
+ m_handlerToProcessOnlyInOld(event.m_handlerToProcessOnlyIn)
+ {
+ m_event.m_handlerToProcessOnlyIn = handler;
+ }
+
+ ~wxEventProcessInHandlerOnly()
+ {
+ m_event.m_handlerToProcessOnlyIn = m_handlerToProcessOnlyInOld;
+ }
+
+private:
+ wxEvent& m_event;
+ wxEvtHandler * const m_handlerToProcessOnlyInOld;
+
+ wxDECLARE_NO_COPY_CLASS(wxEventProcessInHandlerOnly);
+};
+
+
+class WXDLLIMPEXP_BASE wxEventBasicPayloadMixin
+{
+public:
+ wxEventBasicPayloadMixin()
+ : m_commandInt(0),
+ m_extraLong(0)
+ {
+ }
+
+ void SetString(const wxString& s) { m_cmdString = s; }
+ const wxString& GetString() const { return m_cmdString; }
+
+ void SetInt(int i) { m_commandInt = i; }
+ int GetInt() const { return m_commandInt; }
+
+ void SetExtraLong(long extraLong) { m_extraLong = extraLong; }
+ long GetExtraLong() const { return m_extraLong; }
+
+protected:
+ // Note: these variables have "cmd" or "command" in their name for backward compatibility:
+ // they used to be part of wxCommandEvent, not this mixin.
+ wxString m_cmdString; // String event argument
+ int m_commandInt;
+ long m_extraLong; // Additional information (e.g. select/deselect)
+
+ wxDECLARE_NO_ASSIGN_CLASS(wxEventBasicPayloadMixin);
+};
+
+class WXDLLIMPEXP_BASE wxEventAnyPayloadMixin : public wxEventBasicPayloadMixin
+{
+public:
+ wxEventAnyPayloadMixin() : wxEventBasicPayloadMixin() {}
+
+#if wxUSE_ANY && (!defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(7))
+ template<typename T>
+ void SetPayload(const T& payload)
+ {
+ m_payload = payload;
+ }
+
+ template<typename T>
+ T GetPayload() const
+ {
+ return m_payload.As<T>();
+ }
+
+protected:
+ wxAny m_payload;
+#endif // wxUSE_ANY && (!defined(__VISUALC__) || wxCHECK_VISUALC_VERSION(7))
+
+ wxDECLARE_NO_ASSIGN_CLASS(wxEventBasicPayloadMixin);
+};
+
+
+// Idle event
+/*
+ wxEVT_IDLE
+ */
+
+// Whether to always send idle events to windows, or
+// to only send update events to those with the
+// wxWS_EX_PROCESS_IDLE style.
+
+enum wxIdleMode
+{
+ // Send idle events to all windows
+ wxIDLE_PROCESS_ALL,
+
+ // Send idle events to windows that have
+ // the wxWS_EX_PROCESS_IDLE flag specified
+ wxIDLE_PROCESS_SPECIFIED
+};
+
+class WXDLLIMPEXP_BASE wxIdleEvent : public wxEvent
+{
+public:
+ wxIdleEvent()
+ : wxEvent(0, wxEVT_IDLE),
+ m_requestMore(false)
+ { }
+ wxIdleEvent(const wxIdleEvent& event)
+ : wxEvent(event),
+ m_requestMore(event.m_requestMore)
+ { }
+
+ void RequestMore(bool needMore = true) { m_requestMore = needMore; }
+ bool MoreRequested() const { return m_requestMore; }
+
+ virtual wxEvent *Clone() const { return new wxIdleEvent(*this); }
+
+ // Specify how wxWidgets will send idle events: to
+ // all windows, or only to those which specify that they
+ // will process the events.
+ static void SetMode(wxIdleMode mode) { sm_idleMode = mode; }
+
+ // Returns the idle event mode
+ static wxIdleMode GetMode() { return sm_idleMode; }
projects / wxWidgets.git / blobdiff