X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2b5f62a0b2db198609b45dec622a018dae37008e..068b764a5a7cc2929b1fd8ea5643f43b5cbc8762:/src/common/containr.cpp diff --git a/src/common/containr.cpp b/src/common/containr.cpp index 5b5df9ea92..535513d54d 100644 --- a/src/common/containr.cpp +++ b/src/common/containr.cpp @@ -6,7 +6,7 @@ // Created: 06.08.01 // RCS-ID: $Id$ // Copyright: (c) 2001 Vadim Zeitlin -// License: wxWindows license +// License: wxWindows licence /////////////////////////////////////////////////////////////////////////////// // ============================================================================ @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation "containr.h" #endif @@ -36,6 +36,14 @@ #include "wx/containr.h" +#ifdef __WXMAC__ + #include "wx/scrolbar.h" +#endif + +#ifdef __WXMSW__ + #include "wx/radiobut.h" +#endif + // ============================================================================ // implementation // ============================================================================ @@ -47,6 +55,51 @@ wxControlContainer::wxControlContainer(wxWindow *winParent) m_winLastFocused = m_winTmpDefault = m_winDefault = NULL; + m_inSetFocus = false; +} + +bool wxControlContainer::AcceptsFocus() const +{ + // if we're not shown or disabled, we can't accept focus + if ( m_winParent->IsShown() && m_winParent->IsEnabled() ) + { + // otherwise we can accept focus either if we have no children at all + // (in this case we're probably not used as a container) or only when + // at least one child will accept focus + wxWindowList::compatibility_iterator node = m_winParent->GetChildren().GetFirst(); + if ( !node ) + return true; + +#ifdef __WXMAC__ + // wxMac has eventually the two scrollbars as children, they don't count + // as real children in the algorithm mentioned above + bool hasRealChildren = false ; +#endif + + while ( node ) + { + wxWindow *child = node->GetData(); + + if ( child->AcceptsFocus() ) + { + return true; + } + +#ifdef __WXMAC__ + wxScrollBar *sb = wxDynamicCast( child , wxScrollBar ) ; + if ( sb == NULL || !m_winParent->MacIsWindowScrollbar( sb ) ) + hasRealChildren = true ; +#endif + node = node->GetNext(); + } + +#ifdef __WXMAC__ + if ( !hasRealChildren ) + return true ; +#endif + } + + return false; } void wxControlContainer::SetLastFocus(wxWindow *win) @@ -100,6 +153,111 @@ void wxControlContainer::SetLastFocus(wxWindow *win) } } +// -------------------------------------------------------------------- +// The following four functions are used to find other radio buttons +// within the same group. Used by wxSetFocusToChild on wxMSW +// -------------------------------------------------------------------- + +#ifdef __WXMSW__ + +wxRadioButton* wxGetPreviousButtonInGroup(wxRadioButton *btn) +{ + if ( btn->HasFlag(wxRB_GROUP) || btn->HasFlag(wxRB_SINGLE) ) + return NULL; + + const wxWindowList& siblings = btn->GetParent()->GetChildren(); + wxWindowList::compatibility_iterator nodeThis = siblings.Find(btn); + wxCHECK_MSG( nodeThis, NULL, _T("radio button not a child of its parent?") ); + + // Iterate over all previous siblings until we find the next radio button + wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious(); + wxRadioButton *prevBtn = 0; + while (nodeBefore) + { + prevBtn = wxDynamicCast(nodeBefore->GetData(), wxRadioButton); + if (prevBtn) + break; + + nodeBefore = nodeBefore->GetPrevious(); + } + + if (!prevBtn || prevBtn->HasFlag(wxRB_SINGLE)) + { + // no more buttons in group + return NULL; + } + else + return prevBtn; +} + +wxRadioButton* wxGetNextButtonInGroup(wxRadioButton *btn) +{ + if (btn->HasFlag(wxRB_SINGLE)) + return NULL; + + const wxWindowList& siblings = btn->GetParent()->GetChildren(); + wxWindowList::compatibility_iterator nodeThis = siblings.Find(btn); + wxCHECK_MSG( nodeThis, NULL, _T("radio button not a child of its parent?") ); + + // Iterate over all previous siblings until we find the next radio button + wxWindowList::compatibility_iterator nodeNext = nodeThis->GetNext(); + wxRadioButton *nextBtn = 0; + while (nodeNext) + { + nextBtn = wxDynamicCast(nodeNext->GetData(), wxRadioButton); + if (nextBtn) + break; + + nodeNext = nodeNext->GetNext(); + } + + if ( !nextBtn || nextBtn->HasFlag(wxRB_GROUP) || nextBtn->HasFlag(wxRB_SINGLE) ) + { + // no more buttons or the first button of the next group + return NULL; + } + else + return nextBtn; +} + +wxRadioButton* wxGetFirstButtonInGroup(wxRadioButton *btn) +{ + while (true) + { + wxRadioButton* prevBtn = wxGetPreviousButtonInGroup(btn); + if (!prevBtn) + return btn; + + btn = prevBtn; + } +} + +wxRadioButton* wxGetSelectedButtonInGroup(wxRadioButton *btn) +{ + // Find currently selected button + if (btn->GetValue()) + return btn; + + if (btn->HasFlag(wxRB_SINGLE)) + return NULL; + + wxRadioButton *selBtn; + + // First check all previous buttons + for (selBtn = wxGetPreviousButtonInGroup(btn); selBtn; selBtn = wxGetPreviousButtonInGroup(selBtn)) + if (selBtn->GetValue()) + return selBtn; + + // Now all following buttons + for (selBtn = wxGetNextButtonInGroup(btn); selBtn; selBtn = wxGetNextButtonInGroup(selBtn)) + if (selBtn->GetValue()) + return selBtn; + + return NULL; +} + +#endif // __WXMSW__ + // ---------------------------------------------------------------------------- // Keyboard handling - this is the place where the TAB traversal logic is // implemented. As this code is common to all ports, this ensures consistent @@ -137,7 +295,7 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event ) // the node of the children list from which we should start looking for the // next acceptable child - wxWindowList::Node *node, *start_node; + wxWindowList::compatibility_iterator node, start_node; // we should start from the first/last control and not from the one which // had focus the last time if we're propagating the event downwards because @@ -152,7 +310,7 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event ) node = forward ? children.GetFirst() : children.GetLast(); // we want to cycle over all nodes - start_node = (wxWindowList::Node *)NULL; + start_node = wxWindowList::compatibility_iterator(); } else { @@ -171,12 +329,18 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event ) if ( winFocus ) { +#ifdef __WXMSW__ + // If we are in a radio button group, start from the first item in the + // group + if ( event.IsFromTab() && wxIsKindOf(winFocus, wxRadioButton ) ) + winFocus = wxGetFirstButtonInGroup((wxRadioButton*)winFocus); +#endif // ok, we found the focus - now is it our child? start_node = children.Find( winFocus ); } else { - start_node = (wxWindowList::Node *)NULL; + start_node = wxWindowList::compatibility_iterator(); } if ( !start_node && m_winLastFocused ) @@ -238,13 +402,62 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event ) wxWindow *child = node->GetData(); - if ( child->AcceptsFocusFromKeyboard() ) +#ifdef __WXMSW__ + bool canSelectRadioButton = true; + if (!event.IsFromTab()) + { + // If navigating using cursor keys, make sure not to navigate out of a radio button group. + if (m_winLastFocused && wxIsKindOf(m_winLastFocused, wxRadioButton)) + { + if (!wxIsKindOf(child, wxRadioButton)) + { + child = forward ? + wxGetNextButtonInGroup((wxRadioButton*)m_winLastFocused) : + wxGetPreviousButtonInGroup((wxRadioButton*)m_winLastFocused); + if (!child) + { + event.Skip(false); + return; + } + } + } + } + else + { + // If navigating using tabs, skip all but the first radio button in a group. + if (wxIsKindOf(child, wxRadioButton)) + { + if (wxGetPreviousButtonInGroup((wxRadioButton*)child)) + canSelectRadioButton = false; + } + } +#else + static bool canSelectRadioButton = true; +#endif + + if ( child->AcceptsFocusFromKeyboard() && canSelectRadioButton ) { // if we're setting the focus to a child panel we should prevent it // from giving it to the child which had the focus the last time // and instead give it to the first/last child depending from which // direction we're coming event.SetEventObject(m_winParent); + +#if defined(__WXMSW__) + // we need to hop to the next activated + // radio button, not just the next radio + // button under MSW + if (wxIsKindOf(child, wxRadioButton) && event.IsFromTab()) + { + wxRadioButton *rb = wxGetSelectedButtonInGroup((wxRadioButton*)child); + if (rb) + child = rb; + } +#endif // __WXMSW__ + + // disable propagation for this call as otherwise the event might + // bounce back to us. + wxPropagationDisabler disableProp(event); if ( !child->GetEventHandler()->ProcessEvent(event) ) { // set it first in case SetFocusFromKbd() results in focus @@ -256,7 +469,7 @@ void wxControlContainer::HandleOnNavigationKey( wxNavigationKeyEvent& event ) } //else: the child manages its focus itself - event.Skip( FALSE ); + event.Skip( false ); return; } @@ -290,6 +503,9 @@ bool wxControlContainer::DoSetFocus() wxLogTrace(_T("focus"), _T("SetFocus on wxPanel 0x%08lx."), (unsigned long)m_winParent->GetHandle()); + if (m_inSetFocus) + return true; + // when the panel gets the focus we move the focus to either the last // window that had the focus or the first one that can get it unless the // focus had been already set to some other child @@ -300,7 +516,7 @@ bool wxControlContainer::DoSetFocus() if ( win == m_winParent ) { // our child already has focus, don't take it away from it - return TRUE; + return true; } if ( win->IsTopLevel() ) @@ -313,7 +529,14 @@ bool wxControlContainer::DoSetFocus() win = win->GetParent(); } - return SetFocusToChild(); + // protect against infinite recursion: + m_inSetFocus = true; + + bool ret = SetFocusToChild(); + + m_inSetFocus = false; + + return ret; } void wxControlContainer::HandleOnFocus(wxFocusEvent& event) @@ -339,8 +562,8 @@ bool wxControlContainer::SetFocusToChild() bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused) { - wxCHECK_MSG( win, FALSE, _T("wxSetFocusToChild(): invalid window") ); - wxCHECK_MSG( childLastFocused, FALSE, + wxCHECK_MSG( win, false, _T("wxSetFocusToChild(): invalid window") ); + wxCHECK_MSG( childLastFocused, false, _T("wxSetFocusToChild(): NULL child poonter") ); if ( *childLastFocused ) @@ -355,7 +578,7 @@ bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused) // not SetFocusFromKbd(): we're restoring focus back to the old // window and not setting it as the result of a kbd action (*childLastFocused)->SetFocus(); - return TRUE; + return true; } else { @@ -365,24 +588,37 @@ bool wxSetFocusToChild(wxWindow *win, wxWindow **childLastFocused) } // set the focus to the first child who wants it - wxWindowList::Node *node = win->GetChildren().GetFirst(); + wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst(); while ( node ) { wxWindow *child = node->GetData(); if ( child->AcceptsFocusFromKeyboard() && !child->IsTopLevel() ) { +#ifdef __WXMSW__ + // If a radiobutton is the first focusable child, search for the + // selected radiobutton in the same group + wxRadioButton* btn = wxDynamicCast(child, wxRadioButton); + if (btn) + { + wxRadioButton* selected = wxGetSelectedButtonInGroup(btn); + if (selected) + child = selected; + } +#endif + wxLogTrace(_T("focus"), _T("SetFocusToChild() => first child (0x%08lx)."), (unsigned long)child->GetHandle()); - *childLastFocused = child; // should be redundant, but it is not + *childLastFocused = child; child->SetFocusFromKbd(); - return TRUE; + return true; } node = node->GetNext(); } - return FALSE; + return false; } +