// Author: Julian Smart, Vadim Zeitlin
// Modified by:
// Created: 13/07/98
-// RCS-ID: $Id$
// Copyright: (c) wxWidgets team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#endif
#include "wx/platinfo.h"
+#include "wx/recguard.h"
#include "wx/private/window.h"
#ifdef __WINDOWS__
extern WXDLLEXPORT_DATA(const char) wxPanelNameStr[] = "panel";
+namespace wxMouseCapture
+{
+
+// Check if the given window is in the capture stack.
+bool IsInCaptureStack(wxWindowBase* win);
+
+} // wxMouseCapture
+
// ----------------------------------------------------------------------------
// static data
// ----------------------------------------------------------------------------
// common clean up
wxWindowBase::~wxWindowBase()
{
- wxASSERT_MSG( GetCapture() != this, wxT("attempt to destroy window with mouse capture") );
+ wxASSERT_MSG( !wxMouseCapture::IsInCaptureStack(this),
+ "Destroying window before releasing mouse capture: this "
+ "will result in a crash later." );
// FIXME if these 2 cases result from programming errors in the user code
// we should probably assert here instead of silently fixing them
parent->SendSizeEvent(flags);
}
+bool wxWindowBase::CanScroll(int orient) const
+{
+ return (m_windowStyle &
+ (orient == wxHORIZONTAL ? wxHSCROLL : wxVSCROLL)) != 0;
+}
+
bool wxWindowBase::HasScrollbar(int orient) const
{
// if scrolling in the given direction is disabled, we can't have the
DoEnable(enabled);
#endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
- OnEnabled(enabled);
-
// Disabling a top level window is typically done when showing a modal
// dialog and we don't need to disable its children in this case, they will
// be logically disabled anyhow (i.e. their IsEnabled() will return false)
// they would still show as enabled even though they wouldn't actually
// accept any input (at least under MSW where children don't accept input
// if any of the windows in their parent chain is enabled).
- //
- // Notice that we must do this even for wxHAS_NATIVE_ENABLED_MANAGEMENT
- // platforms as we still need to call the children OnEnabled() recursively.
+#ifndef wxHAS_NATIVE_ENABLED_MANAGEMENT
for ( wxWindowList::compatibility_iterator node = GetChildren().GetFirst();
node;
node = node->GetNext() )
if ( !child->IsTopLevel() && child->IsThisEnabled() )
child->NotifyWindowOnEnableChange(enabled);
}
+#endif // !defined(wxHAS_NATIVE_ENABLED_MANAGEMENT)
}
bool wxWindowBase::Enable(bool enable)
for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
{
wxWindowBase *child = node->GetData();
+
+ // As usual, don't recurse into child dialogs, finding a button in a
+ // child dialog when looking in this window would be unexpected.
+ if ( child->IsTopLevel() )
+ continue;
+
res = child->FindWindow( id );
}
for ( node = m_children.GetFirst(); node && !res; node = node->GetNext() )
{
wxWindow *child = node->GetData();
+
+ // As in FindWindow() overload above, never recurse into child dialogs.
+ if ( child->IsTopLevel() )
+ continue;
+
res = child->FindWindow(name);
}
}
#endif // WXWIN_COMPATIBILITY_2_8
+#if wxUSE_VALIDATORS
+
+namespace
+{
+
+// This class encapsulates possibly recursive iteration on window children done
+// by Validate() and TransferData{To,From}Window() and allows to avoid code
+// duplication in all three functions.
+class ValidationTraverserBase
+{
+public:
+ wxEXPLICIT ValidationTraverserBase(wxWindowBase* win)
+ : m_win(static_cast<wxWindow*>(win))
+ {
+ }
+
+ // Traverse all the direct children calling OnDo() on them and also all
+ // grandchildren if wxWS_EX_VALIDATE_RECURSIVELY is used, calling
+ // OnRecurse() for them.
+ bool DoForAllChildren()
+ {
+ const bool recurse = m_win->HasExtraStyle(wxWS_EX_VALIDATE_RECURSIVELY);
+
+ wxWindowList& children = m_win->GetChildren();
+ for ( wxWindowList::iterator i = children.begin();
+ i != children.end();
+ ++i )
+ {
+ wxWindow* const child = static_cast<wxWindow*>(*i);
+ wxValidator* const validator = child->GetValidator();
+ if ( validator && !OnDo(validator) )
+ {
+ return false;
+ }
+
+ // Notice that validation should never recurse into top level
+ // children, e.g. some other dialog which might happen to be
+ // currently shown.
+ if ( recurse && !child->IsTopLevel() && !OnRecurse(child) )
+ {
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ // Give it a virtual dtor just to suppress gcc warnings about a class with
+ // virtual methods but non-virtual dtor -- even if this is completely safe
+ // here as we never use the objects of this class polymorphically.
+ virtual ~ValidationTraverserBase() { }
+
+protected:
+ // Called for each child, validator is guaranteed to be non-NULL.
+ virtual bool OnDo(wxValidator* validator) = 0;
+
+ // Called for each child if we need to recurse into its children.
+ virtual bool OnRecurse(wxWindow* child) = 0;
+
+
+ // The window whose children we're traversing.
+ wxWindow* const m_win;
+
+ wxDECLARE_NO_COPY_CLASS(ValidationTraverserBase);
+};
+
+} // anonymous namespace
+
+#endif // wxUSE_VALIDATORS
+
bool wxWindowBase::Validate()
{
#if wxUSE_VALIDATORS
- bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
-
- wxWindowList::compatibility_iterator node;
- for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+ class ValidateTraverser : public ValidationTraverserBase
{
- wxWindowBase *child = node->GetData();
- wxValidator *validator = child->GetValidator();
- if ( validator && !validator->Validate((wxWindow *)this) )
+ public:
+ wxEXPLICIT ValidateTraverser(wxWindowBase* win)
+ : ValidationTraverserBase(win)
{
- return false;
}
- if ( recurse && !child->Validate() )
+ virtual bool OnDo(wxValidator* validator)
{
- return false;
+ return validator->Validate(m_win);
}
- }
-#endif // wxUSE_VALIDATORS
+ virtual bool OnRecurse(wxWindow* child)
+ {
+ return child->Validate();
+ }
+ };
+
+ return ValidateTraverser(this).DoForAllChildren();
+#else // !wxUSE_VALIDATORS
return true;
+#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS
}
bool wxWindowBase::TransferDataToWindow()
{
#if wxUSE_VALIDATORS
- bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
-
- wxWindowList::compatibility_iterator node;
- for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+ class DataToWindowTraverser : public ValidationTraverserBase
{
- wxWindowBase *child = node->GetData();
- wxValidator *validator = child->GetValidator();
- if ( validator && !validator->TransferToWindow() )
+ public:
+ wxEXPLICIT DataToWindowTraverser(wxWindowBase* win)
+ : ValidationTraverserBase(win)
{
- wxLogWarning(_("Could not transfer data to window"));
-#if wxUSE_LOG
- wxLog::FlushActive();
-#endif // wxUSE_LOG
-
- return false;
}
- if ( recurse )
+ virtual bool OnDo(wxValidator* validator)
{
- if ( !child->TransferDataToWindow() )
+ if ( !validator->TransferToWindow() )
{
- // warning already given
+ wxLogWarning(_("Could not transfer data to window"));
+#if wxUSE_LOG
+ wxLog::FlushActive();
+#endif // wxUSE_LOG
+
return false;
}
+
+ return true;
}
- }
-#endif // wxUSE_VALIDATORS
+ virtual bool OnRecurse(wxWindow* child)
+ {
+ return child->TransferDataToWindow();
+ }
+ };
+
+ return DataToWindowTraverser(this).DoForAllChildren();
+#else // !wxUSE_VALIDATORS
return true;
+#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS
}
bool wxWindowBase::TransferDataFromWindow()
{
#if wxUSE_VALIDATORS
- bool recurse = (GetExtraStyle() & wxWS_EX_VALIDATE_RECURSIVELY) != 0;
-
- wxWindowList::compatibility_iterator node;
- for ( node = m_children.GetFirst(); node; node = node->GetNext() )
+ class DataFromWindowTraverser : public ValidationTraverserBase
{
- wxWindow *child = node->GetData();
- wxValidator *validator = child->GetValidator();
- if ( validator && !validator->TransferFromWindow() )
+ public:
+ DataFromWindowTraverser(wxWindowBase* win)
+ : ValidationTraverserBase(win)
{
- // nop warning here because the application is supposed to give
- // one itself - we don't know here what might have gone wrongly
+ }
- return false;
+ virtual bool OnDo(wxValidator* validator)
+ {
+ return validator->TransferFromWindow();
}
- if ( recurse )
+ virtual bool OnRecurse(wxWindow* child)
{
- if ( !child->TransferDataFromWindow() )
- {
- // warning already given
- return false;
- }
+ return child->TransferDataFromWindow();
}
- }
-#endif // wxUSE_VALIDATORS
+ };
+ return DataFromWindowTraverser(this).DoForAllChildren();
+#else // !wxUSE_VALIDATORS
return true;
+#endif // wxUSE_VALIDATORS/!wxUSE_VALIDATORS
}
void wxWindowBase::InitDialog()
wxLayoutConstraints *constr = GetConstraints();
if ( constr && constr->AreSatisfied() )
{
+ ChildrenRepositioningGuard repositionGuard(this);
+
int x = constr->left.GetValue();
int y = constr->top.GetValue();
int w = constr->width.GetValue();
{
gs_popupMenuSelection = wxID_NONE;
- Connect(wxEVT_COMMAND_MENU_SELECTED,
+ Connect(wxEVT_MENU,
wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
NULL,
this);
wxUpdateUIEventHandler(wxWindowBase::InternalOnPopupMenuUpdate),
NULL,
this);
- Disconnect(wxEVT_COMMAND_MENU_SELECTED,
+ Disconnect(wxEVT_MENU,
wxCommandEventHandler(wxWindowBase::InternalOnPopupMenu),
NULL,
this);
// mouse capture
// ----------------------------------------------------------------------------
-struct WXDLLEXPORT wxWindowNext
+// Private data used for mouse capture tracking.
+namespace wxMouseCapture
{
- wxWindow *win;
- wxWindowNext *next;
-} *wxWindowBase::ms_winCaptureNext = NULL;
-wxWindow *wxWindowBase::ms_winCaptureCurrent = NULL;
-bool wxWindowBase::ms_winCaptureChanging = false;
+
+// Stack of the windows which previously had the capture, the top most element
+// is the window that has the mouse capture now.
+//
+// NB: We use wxVector and not wxStack to be able to examine all of the stack
+// elements for debug checks, but only the stack operations should be
+// performed with this vector.
+wxVector<wxWindow*> stack;
+
+// Flag preventing reentrancy in {Capture,Release}Mouse().
+wxRecursionGuardFlag changing;
+
+bool IsInCaptureStack(wxWindowBase* win)
+{
+ for ( wxVector<wxWindow*>::const_iterator it = stack.begin();
+ it != stack.end();
+ ++it )
+ {
+ if ( *it == win )
+ return true;
+ }
+
+ return false;
+}
+
+} // wxMouseCapture
void wxWindowBase::CaptureMouse()
{
wxLogTrace(wxT("mousecapture"), wxT("CaptureMouse(%p)"), static_cast<void*>(this));
- wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive CaptureMouse call?") );
+ wxRecursionGuard guard(wxMouseCapture::changing);
+ wxASSERT_MSG( !guard.IsInside(), wxT("recursive CaptureMouse call?") );
- ms_winCaptureChanging = true;
+ wxASSERT_MSG( !wxMouseCapture::IsInCaptureStack(this),
+ "Recapturing the mouse in the same window?" );
wxWindow *winOld = GetCapture();
if ( winOld )
- {
((wxWindowBase*) winOld)->DoReleaseMouse();
- // save it on stack
- wxWindowNext *item = new wxWindowNext;
- item->win = winOld;
- item->next = ms_winCaptureNext;
- ms_winCaptureNext = item;
- }
- //else: no mouse capture to save
-
DoCaptureMouse();
- ms_winCaptureCurrent = (wxWindow*)this;
- ms_winCaptureChanging = false;
+ wxMouseCapture::stack.push_back(static_cast<wxWindow*>(this));
}
void wxWindowBase::ReleaseMouse()
{
wxLogTrace(wxT("mousecapture"), wxT("ReleaseMouse(%p)"), static_cast<void*>(this));
- wxASSERT_MSG( !ms_winCaptureChanging, wxT("recursive ReleaseMouse call?") );
-
- wxASSERT_MSG( GetCapture() == this,
- "attempt to release mouse, but this window hasn't captured it" );
- wxASSERT_MSG( ms_winCaptureCurrent == this,
- "attempt to release mouse, but this window hasn't captured it" );
+ wxRecursionGuard guard(wxMouseCapture::changing);
+ wxASSERT_MSG( !guard.IsInside(), wxT("recursive ReleaseMouse call?") );
- ms_winCaptureChanging = true;
+#if wxDEBUG_LEVEL
+ wxWindow* const winCapture = GetCapture();
+ if ( !winCapture )
+ {
+ wxFAIL_MSG
+ (
+ wxString::Format
+ (
+ "Releasing mouse in %p(%s) but it is not captured",
+ this, GetClassInfo()->GetClassName()
+ )
+ );
+ }
+ else if ( winCapture != this )
+ {
+ wxFAIL_MSG
+ (
+ wxString::Format
+ (
+ "Releasing mouse in %p(%s) but it is captured by %p(%s)",
+ this, GetClassInfo()->GetClassName(),
+ winCapture, winCapture->GetClassInfo()->GetClassName()
+ )
+ );
+ }
+#endif // wxDEBUG_LEVEL
DoReleaseMouse();
- ms_winCaptureCurrent = NULL;
- if ( ms_winCaptureNext )
- {
- ((wxWindowBase*)ms_winCaptureNext->win)->DoCaptureMouse();
- ms_winCaptureCurrent = ms_winCaptureNext->win;
+ wxCHECK_RET( !wxMouseCapture::stack.empty(),
+ "Releasing mouse capture but capture stack empty?" );
+ wxCHECK_RET( wxMouseCapture::stack.back() == this,
+ "Window releasing mouse capture not top of capture stack?" );
- wxWindowNext *item = ms_winCaptureNext;
- ms_winCaptureNext = item->next;
- delete item;
- }
- //else: stack is empty, no previous capture
+ wxMouseCapture::stack.pop_back();
- ms_winCaptureChanging = false;
+ // Restore the capture to the previous window, if any.
+ if ( !wxMouseCapture::stack.empty() )
+ {
+ ((wxWindowBase*)wxMouseCapture::stack.back())->DoCaptureMouse();
+ }
wxLogTrace(wxT("mousecapture"),
- (const wxChar *) wxT("After ReleaseMouse() mouse is captured by %p"),
+ wxT("After ReleaseMouse() mouse is captured by %p"),
static_cast<void*>(GetCapture()));
}
{
// don't do anything if capture lost was expected, i.e. resulted from
// a wx call to ReleaseMouse or CaptureMouse:
- if ( ms_winCaptureChanging )
+ wxRecursionGuard guard(wxMouseCapture::changing);
+ if ( guard.IsInside() )
return;
// if the capture was lost unexpectedly, notify every window that has
// capture (on stack or current) about it and clear the stack:
-
- if ( ms_winCaptureCurrent )
+ while ( !wxMouseCapture::stack.empty() )
{
- DoNotifyWindowAboutCaptureLost(ms_winCaptureCurrent);
- ms_winCaptureCurrent = NULL;
- }
-
- while ( ms_winCaptureNext )
- {
- wxWindowNext *item = ms_winCaptureNext;
- ms_winCaptureNext = item->next;
-
- DoNotifyWindowAboutCaptureLost(item->win);
+ DoNotifyWindowAboutCaptureLost(wxMouseCapture::stack.back());
- delete item;
+ wxMouseCapture::stack.pop_back();
}
}
wxWindow *parent = GetParent();
if ( parent && !parent->IsBeingDeleted() )
{
- wxPropagateOnce propagateOnce(event);
+ wxPropagateOnce propagateOnce(event, this);
return parent->GetEventHandler()->ProcessEvent(event);
}
projects / wxWidgets.git / blobdiff