added explanatory comment

[wxWidgets.git] / src / common / event.cpp

diff --git a/src/common/event.cpp b/src/common/event.cpp
index 5e40721437f53ac56ea78d16ec3973f6413cde5d..68a17045f205529d022663a0bf2f35c7ed233ef8 100644 (file)
--- a/src/common/event.cpp
+++ b/src/common/event.cpp
@@ -31,6 +31,7 @@
     #include "wx/app.h"
     #include "wx/utils.h"
     #include "wx/stopwatch.h"
+    #include "wx/module.h"
 
     #if wxUSE_GUI
         #include "wx/control.h"
@@ -40,8 +41,6 @@
     #endif // wxUSE_GUI
 #endif
 
-#include "wx/module.h"
-
 // ----------------------------------------------------------------------------
 // wxWin macros
 // ----------------------------------------------------------------------------
@@ -49,10 +48,10 @@
 #if wxUSE_BASE
     IMPLEMENT_DYNAMIC_CLASS(wxEvtHandler, wxObject)
     IMPLEMENT_ABSTRACT_CLASS(wxEvent, wxObject)
+    IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
 #endif // wxUSE_BASE
 
 #if wxUSE_GUI
-    IMPLEMENT_DYNAMIC_CLASS(wxIdleEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxCommandEvent, wxEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxNotifyEvent, wxCommandEvent)
     IMPLEMENT_DYNAMIC_CLASS(wxScrollEvent, wxCommandEvent)
@@ -148,6 +147,7 @@ const wxEventType wxEVT_USER_FIRST = wxEVT_FIRST + 2000;
 DEFINE_EVENT_TYPE(wxEVT_NULL)
 DEFINE_EVENT_TYPE(wxEVT_IDLE)
 DEFINE_EVENT_TYPE(wxEVT_SOCKET)
+DEFINE_EVENT_TYPE(wxEVT_TIMER)
 
 #endif // !WXWIN_COMPATIBILITY_EVENT_TYPES
 
@@ -173,9 +173,7 @@ DEFINE_EVENT_TYPE(wxEVT_COMMAND_COMBOBOX_SELECTED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_RCLICKED)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_ENTER)
 DEFINE_EVENT_TYPE(wxEVT_COMMAND_SPINCTRL_UPDATED)
-
-// Sockets and timers send events, too
-DEFINE_EVENT_TYPE(wxEVT_TIMER)
+DEFINE_EVENT_TYPE(wxEVT_COMMAND_TOOL_DROPDOWN_CLICKED)
 
 // Mouse event types
 DEFINE_EVENT_TYPE(wxEVT_LEFT_DOWN)
@@ -311,6 +309,8 @@ DEFINE_EVENT_TYPE(wxEVT_DETAILED_HELP)
 
 #if wxUSE_BASE
 
+wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
+
 // ============================================================================
 // implementation
 // ============================================================================
@@ -353,7 +353,7 @@ wxEvent::wxEvent(int theId, wxEventType commandType )
 }
 
 wxEvent::wxEvent(const wxEvent &src)
-    : wxObject()
+    : wxObject(src)
     , m_eventObject(src.m_eventObject)
     , m_eventType(src.m_eventType)
     , m_timeStamp(src.m_timeStamp)
@@ -381,9 +381,6 @@ wxEvent::wxEvent(const wxEvent &src)
 
 wxCommandEvent::wxCommandEvent(wxEventType commandType, int theId)
               : wxEvent(theId, commandType)
-#if WXWIN_COMPATIBILITY_2_4
-              , m_commandString(this)
-#endif
 {
     m_clientData = (char *) NULL;
     m_clientObject = (wxClientData *) NULL;
@@ -474,25 +471,6 @@ void wxUpdateUIEvent::ResetUpdateTime()
 #endif
 }
 
-/*
- * Idle events
- */
-
-wxIdleMode wxIdleEvent::sm_idleMode = wxIDLE_PROCESS_ALL;
-
-// Can we send an idle event?
-bool wxIdleEvent::CanSend(wxWindow* win)
-{
-    // Don't update if we've switched global updating off
-    // and this window doesn't support updates.
-    if (win &&
-       (GetMode() == wxIDLE_PROCESS_SPECIFIED &&
-       ((win->GetExtraStyle() & wxWS_EX_PROCESS_IDLE) == 0)))
-        return false;
-
-    return true;
-}
-
 /*
  * Scroll events
  */
@@ -540,6 +518,7 @@ wxMouseEvent::wxMouseEvent(wxEventType commandType)
     m_wheelRotation = 0;
     m_wheelDelta = 0;
     m_linesPerAction = 0;
+    m_wheelAxis = 0;
 }
 
 void wxMouseEvent::Assign(const wxMouseEvent& event)
@@ -561,6 +540,7 @@ void wxMouseEvent::Assign(const wxMouseEvent& event)
     m_wheelRotation = event.m_wheelRotation;
     m_wheelDelta = event.m_wheelDelta;
     m_linesPerAction = event.m_linesPerAction;
+    m_wheelAxis = event.m_wheelAxis;
 }
 
 // return true if was a button dclick event
@@ -1012,6 +992,7 @@ wxEvtHandler::wxEvtHandler()
     m_eventsLocker = new wxCriticalSection;
 #  endif
 #endif
+    
     // no client data (yet)
     m_clientData = NULL;
     m_clientDataType = wxClientData_None;
@@ -1028,9 +1009,10 @@ wxEvtHandler::~wxEvtHandler()
 
     if (m_dynamicEvents)
     {
-        wxList::iterator it = m_dynamicEvents->begin(),
-                         en = m_dynamicEvents->end();
-        for (;it != en; ++it)
+        for ( wxList::iterator it = m_dynamicEvents->begin(),
+                               end = m_dynamicEvents->end();
+              it != end;
+              ++it )
         {
 #if WXWIN_COMPATIBILITY_EVENT_TYPES
             wxEventTableEntry *entry = (wxEventTableEntry*)*it;
@@ -1132,11 +1114,11 @@ void wxEvtHandler::AddPendingEvent(wxEvent& event)
 
 void wxEvtHandler::ProcessPendingEvents()
 {
-    // this method is only called by wxApp if this handler does have pending
-    // events
+    // this method is only called by wxApp if this handler does have
+    // pending events
     wxCHECK_RET( m_pendingEvents,
                  wxT("Please call wxApp::ProcessPendingEvents() instead") );
-
+    
     wxENTER_CRIT_SECT( Lock() );
 
     // we leave the loop once we have processed all events that were present at
@@ -1153,11 +1135,13 @@ void wxEvtHandler::ProcessPendingEvents()
         // It's importan we remove event from list before processing it.
         // Else a nested event loop, for example from a modal dialog, might
         // process the same event again.
+
         m_pendingEvents->Erase(node);
 
         wxLEAVE_CRIT_SECT( Lock() );
 
         ProcessEvent(*event);
+
         delete event;
 
         wxENTER_CRIT_SECT( Lock() );
@@ -1458,4 +1442,38 @@ wxWindow* wxFindFocusDescendant(wxWindow* ancestor)
     return focusWin;
 }
 
+// ----------------------------------------------------------------------------
+// wxEventBlocker
+// ----------------------------------------------------------------------------
+
+wxEventBlocker::wxEventBlocker(wxWindow *win, wxEventType type)
+{
+    wxCHECK_RET(win, wxT("Null window given to wxEventBlocker"));
+
+    m_window = win;
+
+    Block(type);
+    m_window->PushEventHandler(this);
+}
+
+wxEventBlocker::~wxEventBlocker()
+{
+    wxEvtHandler *popped = m_window->PopEventHandler(false);
+    wxCHECK_RET(popped == this, 
+        wxT("Don't push other event handlers into a window managed by wxEventBlocker!"));
+}
+
+bool wxEventBlocker::ProcessEvent(wxEvent& event)
+{
+    // should this event be blocked?
+    for ( size_t i = 0; i < m_eventsToBlock.size(); i++ )
+    {
+        wxEventType t = (wxEventType)m_eventsToBlock[i];
+        if ( t == wxEVT_ANY || t == event.GetEventType() )
+            return true;   // yes, it should: mark this event as processed
+    }
+
+    return false;
+}
+
 #endif // wxUSE_GUI