]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/popupcmn.cpp
Avoid using buffer of already deallocated string in wxHTMLDataObject.
[wxWidgets.git] / src / common / popupcmn.cpp
index 47099f03ba83a6ad5c332fb783e65abccfbca095..32c84645632ae2e4d4b39395e3a21f706feb8796 100644 (file)
@@ -1,12 +1,12 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        common/popupcmn.cpp
+// Name:        src/common/popupcmn.cpp
 // Purpose:     implementation of wxPopupTransientWindow
 // Author:      Vadim Zeitlin
 // Modified by:
 // Created:     06.01.01
 // RCS-ID:      $Id$
 // Copyright:   (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// License:     wxWindows licence
+// Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
 // headers
 // ----------------------------------------------------------------------------
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "popupwinbase.h"
-#endif
-
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #include "wx/popupwin.h"
 
 #ifndef WX_PRECOMP
-    #include "wx/combobox.h"        // wxComboControl
+    #include "wx/combobox.h"        // wxComboCtrl
     #include "wx/app.h"             // wxPostEvent
     #include "wx/log.h"
-    #include "wx/app.h"
 #endif //WX_PRECOMP
 
+#include "wx/display.h"
+#include "wx/recguard.h"
+
 #ifdef __WXUNIVERSAL__
     #include "wx/univ/renderer.h"
+    #include "wx/scrolbar.h"
 #endif // __WXUNIVERSAL__
 
 #ifdef __WXGTK__
     #include <gtk/gtk.h>
-#endif
-#ifdef __WXX11__
-#include "wx/x11/private.h"
+    #if GTK_CHECK_VERSION(2,0,0)
+        #include "wx/gtk/private/gtk2-compat.h"
+    #else
+        #define gtk_widget_get_window(x) x->window
+    #endif
+#elif defined(__WXMSW__)
+    #include "wx/msw/private.h"
+#elif defined(__WXX11__)
+    #include "wx/x11/private.h"
 #endif
 
 IMPLEMENT_DYNAMIC_CLASS(wxPopupWindow, wxWindow)
@@ -66,36 +71,34 @@ IMPLEMENT_DYNAMIC_CLASS(wxPopupTransientWindow, wxPopupWindow)
 class wxPopupWindowHandler : public wxEvtHandler
 {
 public:
-    wxPopupWindowHandler(wxPopupTransientWindow *popup) { m_popup = popup; }
+    wxPopupWindowHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
 
 protected:
     // event handlers
     void OnLeftDown(wxMouseEvent& event);
+    void OnCaptureLost(wxMouseCaptureLostEvent& event);
 
 private:
     wxPopupTransientWindow *m_popup;
 
     DECLARE_EVENT_TABLE()
-    DECLARE_NO_COPY_CLASS(wxPopupWindowHandler)
+    wxDECLARE_NO_COPY_CLASS(wxPopupWindowHandler);
 };
 
 class wxPopupFocusHandler : public wxEvtHandler
 {
 public:
-    wxPopupFocusHandler(wxPopupTransientWindow *popup)
-    {
-        m_popup = popup;
-    }
+    wxPopupFocusHandler(wxPopupTransientWindow *popup) : m_popup(popup) {}
 
 protected:
     void OnKillFocus(wxFocusEvent& event);
-    void OnKeyDown(wxKeyEvent& event);
+    void OnChar(wxKeyEvent& event);
 
 private:
     wxPopupTransientWindow *m_popup;
 
     DECLARE_EVENT_TABLE()
-    DECLARE_NO_COPY_CLASS(wxPopupFocusHandler)
+    wxDECLARE_NO_COPY_CLASS(wxPopupFocusHandler);
 };
 
 // ----------------------------------------------------------------------------
@@ -104,11 +107,18 @@ private:
 
 BEGIN_EVENT_TABLE(wxPopupWindowHandler, wxEvtHandler)
     EVT_LEFT_DOWN(wxPopupWindowHandler::OnLeftDown)
+    EVT_MOUSE_CAPTURE_LOST(wxPopupWindowHandler::OnCaptureLost)
 END_EVENT_TABLE()
 
 BEGIN_EVENT_TABLE(wxPopupFocusHandler, wxEvtHandler)
     EVT_KILL_FOCUS(wxPopupFocusHandler::OnKillFocus)
-    EVT_KEY_DOWN(wxPopupFocusHandler::OnKeyDown)
+    EVT_CHAR(wxPopupFocusHandler::OnChar)
+END_EVENT_TABLE()
+
+BEGIN_EVENT_TABLE(wxPopupTransientWindow, wxPopupWindow)
+#if defined(__WXMSW__) || (defined(__WXMAC__) && wxOSX_USE_COCOA_OR_CARBON)
+    EVT_IDLE(wxPopupTransientWindow::OnIdle)
+#endif
 END_EVENT_TABLE()
 
 // ============================================================================
@@ -132,13 +142,31 @@ bool wxPopupWindowBase::Create(wxWindow* WXUNUSED(parent), int WXUNUSED(flags))
 void wxPopupWindowBase::Position(const wxPoint& ptOrigin,
                                  const wxSize& size)
 {
-    wxSize sizeScreen = wxGetDisplaySize(),
-           sizeSelf = GetSize();
+    // determine the position and size of the screen we clamp the popup to
+    wxPoint posScreen;
+    wxSize sizeScreen;
+
+    const int displayNum = wxDisplay::GetFromPoint(ptOrigin);
+    if ( displayNum != wxNOT_FOUND )
+    {
+        const wxRect rectScreen = wxDisplay(displayNum).GetGeometry();
+        posScreen = rectScreen.GetPosition();
+        sizeScreen = rectScreen.GetSize();
+    }
+    else // outside of any display?
+    {
+        // just use the primary one then
+        posScreen = wxPoint(0, 0);
+        sizeScreen = wxGetDisplaySize();
+    }
+
+
+    const wxSize sizeSelf = GetSize();
 
     // is there enough space to put the popup below the window (where we put it
     // by default)?
     wxCoord y = ptOrigin.y + size.y;
-    if ( y + sizeSelf.y > sizeScreen.y )
+    if ( y + sizeSelf.y > posScreen.y + sizeScreen.y )
     {
         // check if there is enough space above
         if ( ptOrigin.y > sizeSelf.y )
@@ -150,8 +178,19 @@ void wxPopupWindowBase::Position(const wxPoint& ptOrigin,
     }
 
     // now check left/right too
-    wxCoord x = ptOrigin.x + size.x;
-    if ( x + sizeSelf.x > sizeScreen.x )
+    wxCoord x = ptOrigin.x;
+
+    if ( wxTheApp->GetLayoutDirection() == wxLayout_RightToLeft )
+    {
+        // shift the window to the left instead of the right.
+        x -= size.x;
+        x -= sizeSelf.x;        // also shift it by window width.
+    }
+    else
+        x += size.x;
+
+
+    if ( x + sizeSelf.x > posScreen.x + sizeScreen.x )
     {
         // check if there is enough space to the left
         if ( ptOrigin.x > sizeSelf.x )
@@ -172,7 +211,7 @@ void wxPopupWindowBase::Position(const wxPoint& ptOrigin,
 void wxPopupTransientWindow::Init()
 {
     m_child =
-    m_focus = (wxWindow *)NULL;
+    m_focus = NULL;
 
     m_handlerFocus = NULL;
     m_handlerPopup = NULL;
@@ -187,46 +226,41 @@ wxPopupTransientWindow::wxPopupTransientWindow(wxWindow *parent, int style)
 
 wxPopupTransientWindow::~wxPopupTransientWindow()
 {
-    PopHandlers();
+    if (m_handlerPopup && m_handlerPopup->GetNextHandler())
+        PopHandlers();
+
+    wxASSERT(!m_handlerFocus || !m_handlerFocus->GetNextHandler());
+    wxASSERT(!m_handlerPopup || !m_handlerPopup->GetNextHandler());
+
+    delete m_handlerFocus;
+    delete m_handlerPopup;
 }
 
 void wxPopupTransientWindow::PopHandlers()
 {
     if ( m_child )
     {
-        if ( m_handlerPopup && !m_child->RemoveEventHandler(m_handlerPopup) )
+        if ( !m_child->RemoveEventHandler(m_handlerPopup) )
         {
             // something is very wrong and someone else probably deleted our
             // handler - so don't risk deleting it second time
             m_handlerPopup = NULL;
         }
-
+        if (m_child->HasCapture())
+        {
+            m_child->ReleaseMouse();
+        }
         m_child = NULL;
     }
 
-#ifdef __WXMSW__
     if ( m_focus )
     {
-        if ( m_handlerFocus && !m_focus->RemoveEventHandler(m_handlerFocus) )
+        if ( !m_focus->RemoveEventHandler(m_handlerFocus) )
         {
             // see above
             m_handlerFocus = NULL;
         }
     }
-#else
-    if ( m_handlerFocus && !RemoveEventHandler(m_handlerFocus) )
-    {
-        // see above
-        m_handlerFocus = NULL;
-    }
-#endif
-
-    // delete the handlers, they'll be created as necessary in Popup()
-    delete m_handlerPopup;
-    m_handlerPopup = NULL;
-    delete m_handlerFocus;
-    m_handlerFocus = NULL;
-
     m_focus = NULL;
 }
 
@@ -244,34 +278,44 @@ void wxPopupTransientWindow::Popup(wxWindow *winFocus)
 
     Show();
 
-    delete m_handlerPopup;
-    m_handlerPopup = new wxPopupWindowHandler(this);
+    // There is a problem if these are still in use
+    wxASSERT(!m_handlerFocus || !m_handlerFocus->GetNextHandler());
+    wxASSERT(!m_handlerPopup || !m_handlerPopup->GetNextHandler());
+
+    if (!m_handlerPopup)
+        m_handlerPopup = new wxPopupWindowHandler(this);
 
     m_child->PushEventHandler(m_handlerPopup);
 
-    m_focus = winFocus ? winFocus : this;
-    m_focus->SetFocus();
+#if defined(__WXMSW__)
+    // Focusing on child of popup window does not work on MSW unless WS_POPUP
+    // style is set. We do not even want to try to set the focus, as it may
+    // provoke errors on some Windows versions (Vista and later).
+    if ( ::GetWindowLong(GetHwnd(), GWL_STYLE) & WS_POPUP )
+#endif
+    {
+        m_focus = winFocus ? winFocus : this;
+        m_focus->SetFocus();
+    }
 
-#ifdef __WXMSW__
+#if defined( __WXMSW__ ) || (defined( __WXMAC__) && wxOSX_USE_COCOA_OR_CARBON)
     // MSW doesn't allow to set focus to the popup window, but we need to
     // subclass the window which has the focus, and not winFocus passed in or
     // otherwise everything else breaks down
     m_focus = FindFocus();
+#elif defined(__WXGTK__)
+    // GTK+ catches the activate events from the popup
+    // window, not the focus events from the child window
+    m_focus = this;
+#endif
+
     if ( m_focus )
     {
-        delete m_handlerFocus;
-        m_handlerFocus = new wxPopupFocusHandler(this);
+        if (!m_handlerFocus)
+            m_handlerFocus = new wxPopupFocusHandler(this);
 
         m_focus->PushEventHandler(m_handlerFocus);
     }
-#else
-    // GTK+ catches the activate events from the popup
-    // window, not the focus events from the child window
-    delete m_handlerFocus;
-    m_handlerFocus = new wxPopupFocusHandler(this);
-    PushEventHandler(m_handlerFocus);
-#endif // __WXMSW__
-
 }
 
 bool wxPopupTransientWindow::Show( bool show )
@@ -279,7 +323,14 @@ bool wxPopupTransientWindow::Show( bool show )
 #ifdef __WXGTK__
     if (!show)
     {
+#ifdef __WXGTK3__
+        GdkDisplay* display = gtk_widget_get_display(m_widget);
+        GdkDeviceManager* manager = gdk_display_get_device_manager(display);
+        GdkDevice* device = gdk_device_manager_get_client_pointer(manager);
+        gdk_device_ungrab(device, unsigned(GDK_CURRENT_TIME));
+#else
         gdk_pointer_ungrab( (guint32)GDK_CURRENT_TIME );
+#endif
 
         gtk_grab_remove( m_widget );
     }
@@ -292,6 +343,13 @@ bool wxPopupTransientWindow::Show( bool show )
     }
 #endif
 
+#if defined( __WXMSW__ ) || defined( __WXMAC__)
+    if (!show && m_child && m_child->HasCapture())
+    {
+        m_child->ReleaseMouse();
+    }
+#endif
+
     bool ret = wxPopupWindow::Show( show );
 
 #ifdef __WXGTK__
@@ -299,15 +357,25 @@ bool wxPopupTransientWindow::Show( bool show )
     {
         gtk_grab_add( m_widget );
 
-        gdk_pointer_grab( m_widget->window, TRUE,
-                          (GdkEventMask)
-                            (GDK_BUTTON_PRESS_MASK |
-                             GDK_BUTTON_RELEASE_MASK |
-                             GDK_POINTER_MOTION_HINT_MASK |
-                             GDK_POINTER_MOTION_MASK),
-                          (GdkWindow *) NULL,
-                          (GdkCursor *) NULL,
+        const GdkEventMask mask = GdkEventMask(
+            GDK_BUTTON_PRESS_MASK |
+            GDK_BUTTON_RELEASE_MASK |
+            GDK_POINTER_MOTION_HINT_MASK |
+            GDK_POINTER_MOTION_MASK);
+        GdkWindow* window = gtk_widget_get_window(m_widget);
+#ifdef __WXGTK3__
+        GdkDisplay* display = gdk_window_get_display(window);
+        GdkDeviceManager* manager = gdk_display_get_device_manager(display);
+        GdkDevice* device = gdk_device_manager_get_client_pointer(manager);
+        gdk_device_grab(device, window,
+            GDK_OWNERSHIP_NONE, false, mask, NULL, unsigned(GDK_CURRENT_TIME));
+#else
+        gdk_pointer_grab( window, true,
+                          mask,
+                          NULL,
+                          NULL,
                           (guint32)GDK_CURRENT_TIME );
+#endif
     }
 #endif
 
@@ -326,20 +394,41 @@ bool wxPopupTransientWindow::Show( bool show )
             CurrentTime );
     }
 #endif
+
+#if defined( __WXMSW__ ) || defined( __WXMAC__)
+    if (show && m_child)
+    {
+        // Assume that the mouse is outside the popup to begin with
+        m_child->CaptureMouse();
+    }
+#endif
+
     return ret;
 }
 
-void wxPopupTransientWindow::Dismiss()
+bool wxPopupTransientWindow::Destroy()
 {
-    PopHandlers();
+    // The popup window can be deleted at any moment, even while some events
+    // are still being processed for it, so delay its real destruction until
+    // the next idle time when we're sure that it's safe to really destroy it.
+
+    wxCHECK_MSG( !wxPendingDelete.Member(this), false,
+                 wxS("Shouldn't destroy the popup twice.") );
 
+    wxPendingDelete.Append(this);
+
+    return true;
+}
+
+void wxPopupTransientWindow::Dismiss()
+{
     Hide();
+    PopHandlers();
 }
 
 void wxPopupTransientWindow::DismissAndNotify()
 {
     Dismiss();
-
     OnDismiss();
 }
 
@@ -354,6 +443,35 @@ bool wxPopupTransientWindow::ProcessLeftDown(wxMouseEvent& WXUNUSED(event))
     return false;
 }
 
+#if defined(__WXMSW__) ||(defined(__WXMAC__) && wxOSX_USE_COCOA_OR_CARBON)
+void wxPopupTransientWindow::OnIdle(wxIdleEvent& event)
+{
+    event.Skip();
+
+    if (IsShown() && m_child)
+    {
+        wxPoint pos = ScreenToClient(wxGetMousePosition());
+        wxRect rect(GetSize());
+
+        if ( rect.Contains(pos) )
+        {
+            if ( m_child->HasCapture() )
+            {
+                m_child->ReleaseMouse();
+            }
+        }
+        else
+        {
+            if ( !m_child->HasCapture() )
+            {
+                m_child->CaptureMouse();
+            }
+        }
+    }
+}
+#endif // wxOSX/Carbon
+
+
 #if wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
 
 // ----------------------------------------------------------------------------
@@ -364,13 +482,13 @@ BEGIN_EVENT_TABLE(wxPopupComboWindow, wxPopupTransientWindow)
     EVT_KEY_DOWN(wxPopupComboWindow::OnKeyDown)
 END_EVENT_TABLE()
 
-wxPopupComboWindow::wxPopupComboWindow(wxComboControl *parent)
+wxPopupComboWindow::wxPopupComboWindow(wxComboCtrl *parent)
                   : wxPopupTransientWindow(parent)
 {
     m_combo = parent;
 }
 
-bool wxPopupComboWindow::Create(wxComboControl *parent)
+bool wxPopupComboWindow::Create(wxComboCtrl *parent)
 {
     m_combo = parent;
 
@@ -398,12 +516,12 @@ void wxPopupComboWindow::PositionNearCombo()
 
 void wxPopupComboWindow::OnDismiss()
 {
-    m_combo->OnDismiss();
+    m_combo->OnPopupDismiss(true);
 }
 
 void wxPopupComboWindow::OnKeyDown(wxKeyEvent& event)
 {
-    m_combo->ProcessEvent(event);
+    m_combo->ProcessWindowEvent(event);
 }
 
 #endif // wxUSE_COMBOBOX && defined(__WXUNIVERSAL__)
@@ -423,8 +541,11 @@ void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
 
     wxPoint pos = event.GetPosition();
 
-    // scrollbar on which the click occured
+    // in non-Univ ports the system manages scrollbars for us
+#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
+    // scrollbar on which the click occurred
     wxWindow *sbar = NULL;
+#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR
 
     wxWindow *win = (wxWindow *)event.GetEventObject();
 
@@ -444,20 +565,20 @@ void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
                 // dismissing a tooltip shouldn't waste a click, i.e. you
                 // should be able to dismiss it and press the button with the
                 // same click, so repost this event to the window beneath us
-                wxWindow *win = wxFindWindowAtPoint(event2.GetPosition());
-                if ( win )
+                wxWindow *winUnder = wxFindWindowAtPoint(event2.GetPosition());
+                if ( winUnder )
                 {
                     // translate the event coords to the ones of the window
                     // which is going to get the event
-                    win->ScreenToClient(&event2.m_x, &event2.m_y);
+                    winUnder->ScreenToClient(&event2.m_x, &event2.m_y);
 
-                    event2.SetEventObject(win);
-                    wxPostEvent(win, event2);
+                    event2.SetEventObject(winUnder);
+                    wxPostEvent(winUnder->GetEventHandler(), event2);
                 }
             }
             break;
 
-#ifdef __WXUNIVERSAL__
+#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
         case wxHT_WINDOW_HORZ_SCROLLBAR:
             sbar = win->GetScrollbar(wxHORIZONTAL);
             break;
@@ -465,11 +586,11 @@ void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
         case wxHT_WINDOW_VERT_SCROLLBAR:
             sbar = win->GetScrollbar(wxVERTICAL);
             break;
-#endif
+#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR
 
         default:
             // forgot to update the switch after adding a new hit test code?
-            wxFAIL_MSG( _T("unexpected HitTest() return value") );
+            wxFAIL_MSG( wxT("unexpected HitTest() return value") );
             // fall through
 
         case wxHT_WINDOW_CORNER:
@@ -482,6 +603,7 @@ void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
             break;
     }
 
+#if defined(__WXUNIVERSAL__) && wxUSE_SCROLLBAR
     if ( sbar )
     {
         // translate the event coordinates to the scrollbar ones
@@ -494,6 +616,16 @@ void wxPopupWindowHandler::OnLeftDown(wxMouseEvent& event)
 
         (void)sbar->GetEventHandler()->ProcessEvent(event2);
     }
+#endif // __WXUNIVERSAL__ && wxUSE_SCROLLBAR
+}
+
+void
+wxPopupWindowHandler::OnCaptureLost(wxMouseCaptureLostEvent& WXUNUSED(event))
+{
+    m_popup->DismissAndNotify();
+
+    // There is no need to skip the event here, normally we've already dealt
+    // with the focus loss.
 }
 
 // ----------------------------------------------------------------------------
@@ -515,10 +647,20 @@ void wxPopupFocusHandler::OnKillFocus(wxFocusEvent& event)
     m_popup->DismissAndNotify();
 }
 
-void wxPopupFocusHandler::OnKeyDown(wxKeyEvent& event)
+void wxPopupFocusHandler::OnChar(wxKeyEvent& event)
 {
+    // we can be associated with the popup itself in which case we should avoid
+    // infinite recursion
+    static int s_inside;
+    wxRecursionGuard guard(s_inside);
+    if ( guard.IsInside() )
+    {
+        event.Skip();
+        return;
+    }
+
     // let the window have it first, it might process the keys
-    if ( !m_popup->ProcessEvent(event) )
+    if ( !m_popup->GetEventHandler()->ProcessEvent(event) )
     {
         // by default, dismiss the popup
         m_popup->DismissAndNotify();
@@ -526,4 +668,3 @@ void wxPopupFocusHandler::OnKeyDown(wxKeyEvent& event)
 }
 
 #endif // wxUSE_POPUPWIN
-