5ac5e40e41
Record the object propagating the given event upwards in the event object
itself and use it in wxMDIParentFrame to determine whether the event being
handled is already coming from wxMDIChildFrame and avoid sending it back for
processing it there again in this case.
This is ugly and makes wx event processing even more complex but this is the
only way I could find to ensure that
(a) Both the child and the parent frames get the events from the toolbar
(even though the toolbar parent is the parent frame and hence normally
the child wouldn't get notified about them at all and so the forwarding
at wxMDIParentFrame level is required to make this work).
(b) The child gets the event only once, whether it comes from a toolbar (and
hence indirectly via the parent frame) or from the child menu (and hence
directly to the child, at least in wxMSW).
This commit fixes the event propagation unit test case, at least under MSW and
GTK.
See #14314.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74357 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
404 lines
13 KiB
C++
404 lines
13 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/mdi.h
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// Purpose: wxMDI base header
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// Author: Julian Smart (original)
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// Vadim Zeitlin (base MDI classes refactoring)
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// Copyright: (c) 1998 Julian Smart
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// (c) 2008 Vadim Zeitlin
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// RCS-ID: $Id$
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_MDI_H_BASE_
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#define _WX_MDI_H_BASE_
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#include "wx/defs.h"
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#if wxUSE_MDI
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#include "wx/frame.h"
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#include "wx/menu.h"
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// forward declarations
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class WXDLLIMPEXP_FWD_CORE wxMDIParentFrame;
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class WXDLLIMPEXP_FWD_CORE wxMDIChildFrame;
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class WXDLLIMPEXP_FWD_CORE wxMDIClientWindowBase;
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class WXDLLIMPEXP_FWD_CORE wxMDIClientWindow;
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// ----------------------------------------------------------------------------
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// wxMDIParentFrameBase: base class for parent frame for MDI children
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxMDIParentFrameBase : public wxFrame
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{
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public:
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wxMDIParentFrameBase()
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{
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m_clientWindow = NULL;
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m_currentChild = NULL;
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#if wxUSE_MENUS
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m_windowMenu = NULL;
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#endif // wxUSE_MENUS
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}
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/*
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Derived classes should provide ctor and Create() with the following
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declaration:
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bool Create(wxWindow *parent,
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wxWindowID winid,
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const wxString& title,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxDEFAULT_FRAME_STYLE | wxVSCROLL | wxHSCROLL,
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const wxString& name = wxFrameNameStr);
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*/
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#if wxUSE_MENUS
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virtual ~wxMDIParentFrameBase()
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{
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delete m_windowMenu;
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}
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#endif // wxUSE_MENUS
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// accessors
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// ---------
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// Get or change the active MDI child window
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virtual wxMDIChildFrame *GetActiveChild() const
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{ return m_currentChild; }
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virtual void SetActiveChild(wxMDIChildFrame *child)
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{ m_currentChild = child; }
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// Get the client window
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wxMDIClientWindowBase *GetClientWindow() const { return m_clientWindow; }
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// MDI windows menu functions
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// --------------------------
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#if wxUSE_MENUS
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// return the pointer to the current window menu or NULL if we don't have
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// because of wxFRAME_NO_WINDOW_MENU style
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wxMenu* GetWindowMenu() const { return m_windowMenu; }
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// use the given menu instead of the default window menu
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//
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// menu can be NULL to disable the window menu completely
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virtual void SetWindowMenu(wxMenu *menu)
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{
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if ( menu != m_windowMenu )
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{
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delete m_windowMenu;
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m_windowMenu = menu;
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}
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}
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#endif // wxUSE_MENUS
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// standard MDI window management functions
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// ----------------------------------------
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virtual void Cascade() { }
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virtual void Tile(wxOrientation WXUNUSED(orient) = wxHORIZONTAL) { }
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virtual void ArrangeIcons() { }
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virtual void ActivateNext() = 0;
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virtual void ActivatePrevious() = 0;
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/*
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Derived classes must provide the following function:
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static bool IsTDI();
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*/
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// Create the client window class (don't Create() the window here, just
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// return a new object of a wxMDIClientWindow-derived class)
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//
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// Notice that if you override this method you should use the default
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// constructor and Create() and not the constructor creating the window
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// when creating the frame or your overridden version is not going to be
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// called (as the call to a virtual function from ctor will be dispatched
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// to this class version)
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virtual wxMDIClientWindow *OnCreateClient();
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protected:
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// Override to pass menu/toolbar events to the active child first.
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virtual bool TryBefore(wxEvent& event);
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// This is wxMDIClientWindow for all the native implementations but not for
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// the generic MDI version which has its own wxGenericMDIClientWindow and
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// so we store it as just a base class pointer because we don't need its
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// exact type anyhow
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wxMDIClientWindowBase *m_clientWindow;
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wxMDIChildFrame *m_currentChild;
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#if wxUSE_MENUS
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// the current window menu or NULL if we are not using it
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wxMenu *m_windowMenu;
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#endif // wxUSE_MENUS
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};
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// ----------------------------------------------------------------------------
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// wxMDIChildFrameBase: child frame managed by wxMDIParentFrame
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxMDIChildFrameBase : public wxFrame
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{
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public:
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wxMDIChildFrameBase() { m_mdiParent = NULL; }
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/*
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Derived classes should provide Create() with the following signature:
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bool Create(wxMDIParentFrame *parent,
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wxWindowID id,
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const wxString& title,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxDEFAULT_FRAME_STYLE,
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const wxString& name = wxFrameNameStr);
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And setting m_mdiParent to parent parameter.
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*/
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// MDI children specific methods
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virtual void Activate() = 0;
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// Return the MDI parent frame: notice that it may not be the same as
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// GetParent() (our parent may be the client window or even its subwindow
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// in some implementations)
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wxMDIParentFrame *GetMDIParent() const { return m_mdiParent; }
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// Synonym for GetMDIParent(), was used in some other ports
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wxMDIParentFrame *GetMDIParentFrame() const { return GetMDIParent(); }
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// in most ports MDI children frames are not really top-level, the only
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// exception are the Mac ports in which MDI children are just normal top
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// level windows too
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virtual bool IsTopLevel() const { return false; }
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// In all ports keyboard navigation must stop at MDI child frame level and
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// can't cross its boundary. Indicate this by overriding this function to
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// return true.
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virtual bool IsTopNavigationDomain() const { return true; }
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// Raising any frame is supposed to show it but wxFrame Raise()
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// implementation doesn't work for MDI child frames in most forms so
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// forward this to Activate() which serves the same purpose by default.
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virtual void Raise() { Activate(); }
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protected:
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wxMDIParentFrame *m_mdiParent;
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};
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// ----------------------------------------------------------------------------
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// wxTDIChildFrame: child frame used by TDI implementations
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxTDIChildFrame : public wxMDIChildFrameBase
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{
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public:
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// override wxFrame methods for this non top-level window
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#if wxUSE_STATUSBAR
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// no status bars
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//
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// TODO: MDI children should have their own status bars, why not?
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virtual wxStatusBar* CreateStatusBar(int WXUNUSED(number) = 1,
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long WXUNUSED(style) = 1,
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wxWindowID WXUNUSED(id) = 1,
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const wxString& WXUNUSED(name)
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= wxEmptyString)
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{ return NULL; }
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virtual wxStatusBar *GetStatusBar() const
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{ return NULL; }
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virtual void SetStatusText(const wxString &WXUNUSED(text),
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int WXUNUSED(number)=0)
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{ }
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virtual void SetStatusWidths(int WXUNUSED(n),
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const int WXUNUSED(widths)[])
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{ }
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#endif // wxUSE_STATUSBAR
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#if wxUSE_TOOLBAR
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// no toolbar
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//
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// TODO: again, it should be possible to have tool bars
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virtual wxToolBar *CreateToolBar(long WXUNUSED(style),
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wxWindowID WXUNUSED(id),
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const wxString& WXUNUSED(name))
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{ return NULL; }
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virtual wxToolBar *GetToolBar() const { return NULL; }
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#endif // wxUSE_TOOLBAR
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// no icon
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virtual void SetIcons(const wxIconBundle& WXUNUSED(icons)) { }
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// title is used as the tab label
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virtual wxString GetTitle() const { return m_title; }
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virtual void SetTitle(const wxString& title) = 0;
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// no maximize etc
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virtual void Maximize(bool WXUNUSED(maximize) = true) { }
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virtual bool IsMaximized() const { return true; }
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virtual bool IsAlwaysMaximized() const { return true; }
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virtual void Iconize(bool WXUNUSED(iconize) = true) { }
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virtual bool IsIconized() const { return false; }
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virtual void Restore() { }
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virtual bool ShowFullScreen(bool WXUNUSED(show),
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long WXUNUSED(style)) { return false; }
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virtual bool IsFullScreen() const { return false; }
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// we need to override these functions to ensure that a child window is
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// created even though we derive from wxFrame -- basically we make it
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// behave as just a wxWindow by short-circuiting wxTLW changes to the base
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// class behaviour
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virtual void AddChild(wxWindowBase *child) { wxWindow::AddChild(child); }
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virtual bool Destroy() { return wxWindow::Destroy(); }
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// extra platform-specific hacks
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#ifdef __WXMSW__
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virtual WXDWORD MSWGetStyle(long flags, WXDWORD *exstyle = NULL) const
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{
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return wxWindow::MSWGetStyle(flags, exstyle);
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}
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virtual WXHWND MSWGetParent() const
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{
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return wxWindow::MSWGetParent();
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}
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WXLRESULT MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
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{
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return wxWindow::MSWWindowProc(message, wParam, lParam);
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}
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#endif // __WXMSW__
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protected:
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virtual void DoGetSize(int *width, int *height) const
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{
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wxWindow::DoGetSize(width, height);
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}
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virtual void DoSetSize(int x, int y, int width, int height, int sizeFlags)
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{
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wxWindow::DoSetSize(x, y, width, height, sizeFlags);
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}
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virtual void DoGetClientSize(int *width, int *height) const
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{
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wxWindow::DoGetClientSize(width, height);
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}
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virtual void DoSetClientSize(int width, int height)
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{
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wxWindow::DoSetClientSize(width, height);
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}
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// no size hints
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virtual void DoSetSizeHints(int WXUNUSED(minW), int WXUNUSED(minH),
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int WXUNUSED(maxW), int WXUNUSED(maxH),
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int WXUNUSED(incW), int WXUNUSED(incH)) { }
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wxString m_title;
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};
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// ----------------------------------------------------------------------------
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// wxMDIClientWindowBase: child of parent frame, parent of children frames
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxMDIClientWindowBase : public wxWindow
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{
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public:
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/*
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The derived class must provide the default ctor only (CreateClient()
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will be called later).
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*/
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// Can be overridden in the derived classes but the base class version must
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// be usually called first to really create the client window.
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virtual bool CreateClient(wxMDIParentFrame *parent,
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long style = wxVSCROLL | wxHSCROLL) = 0;
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};
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// ----------------------------------------------------------------------------
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// Include the port-specific implementation of the base classes defined above
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// ----------------------------------------------------------------------------
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// wxUSE_GENERIC_MDI_AS_NATIVE may be predefined to force the generic MDI
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// implementation use even on the platforms which usually don't use it
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//
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// notice that generic MDI can still be used without this, but you would need
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// to explicitly use wxGenericMDIXXX classes in your code (and currently also
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// add src/generic/mdig.cpp to your build as it's not compiled in if generic
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// MDI is not used by default -- but this may change later...)
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#ifndef wxUSE_GENERIC_MDI_AS_NATIVE
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// wxUniv always uses the generic MDI implementation and so do the ports
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// without native version (although wxCocoa seems to have one -- but it's
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// probably not functional?)
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#if defined(__WXCOCOA__) || \
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defined(__WXMOTIF__) || \
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defined(__WXPM__) || \
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defined(__WXUNIVERSAL__)
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#define wxUSE_GENERIC_MDI_AS_NATIVE 1
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#else
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#define wxUSE_GENERIC_MDI_AS_NATIVE 0
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#endif
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#endif // wxUSE_GENERIC_MDI_AS_NATIVE
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#if wxUSE_GENERIC_MDI_AS_NATIVE
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#include "wx/generic/mdig.h"
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#elif defined(__WXMSW__)
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#include "wx/msw/mdi.h"
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#elif defined(__WXGTK20__)
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#include "wx/gtk/mdi.h"
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#elif defined(__WXGTK__)
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#include "wx/gtk1/mdi.h"
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#elif defined(__WXMAC__)
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#include "wx/osx/mdi.h"
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#elif defined(__WXCOCOA__)
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#include "wx/cocoa/mdi.h"
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#endif
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inline wxMDIClientWindow *wxMDIParentFrameBase::OnCreateClient()
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{
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return new wxMDIClientWindow;
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}
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inline bool wxMDIParentFrameBase::TryBefore(wxEvent& event)
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{
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// Menu (and toolbar) events should be sent to the active child frame
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// first, if any.
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if ( event.GetEventType() == wxEVT_MENU ||
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event.GetEventType() == wxEVT_UPDATE_UI )
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{
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wxMDIChildFrame * const child = GetActiveChild();
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if ( child )
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{
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// However avoid sending the event back to the child if it's
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// currently being propagated to us from it.
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wxWindow* const
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from = static_cast<wxWindow*>(event.GetPropagatedFrom());
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if ( !from || !from->IsDescendant(child) )
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{
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if ( child->ProcessWindowEventLocally(event) )
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return true;
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}
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}
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}
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return wxFrame::TryBefore(event);
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}
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#endif // wxUSE_MDI
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#endif // _WX_MDI_H_BASE_
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