textctrl.cpp

Wxpython Implemented on Windows CE, Source code

    if ( ! (style & wxNO_BORDER) )
        style = (style & ~wxBORDER_MASK) | wxSUNKEN_BORDER ;

    if ( !wxTextCtrlBase::Create( parent, id, pos, size, style & ~(wxHSCROLL | wxVSCROLL), validator, name ) )
        return false;

    if ( m_windowStyle & wxTE_MULTILINE )
    {
        wxASSERT_MSG(
            !(m_windowStyle & wxTE_PROCESS_ENTER),
            wxT("wxTE_PROCESS_ENTER style is ignored for multiline text controls (they always process it)") );

        m_windowStyle |= wxTE_PROCESS_ENTER;
        style |= wxTE_PROCESS_ENTER ;
    }

    bool forceMLTE = false ;

#if wxUSE_SYSTEM_OPTIONS
    if (wxSystemOptions::HasOption( wxMAC_TEXTCONTROL_USE_MLTE ) && (wxSystemOptions::GetOptionInt( wxMAC_TEXTCONTROL_USE_MLTE ) == 1))
    {
        forceMLTE = true ;
    }
#endif

#ifdef __WXMAC_OSX__
#if MAC_OS_X_VERSION_MAX_ALLOWED > MAC_OS_X_VERSION_10_2
    if ( UMAGetSystemVersion() >= 0x1030 && !forceMLTE )
    {
        if ( m_windowStyle & wxTE_MULTILINE )
            m_peer = new wxMacMLTEHIViewControl( this , str , pos , size , style ) ;
    }
#endif

    if ( !m_peer )
    {
        if ( !(m_windowStyle & wxTE_MULTILINE) && !forceMLTE )
            m_peer = new wxMacUnicodeTextControl( this , str , pos , size , style ) ;
    }
#endif

    if ( !m_peer )
        m_peer = new wxMacMLTEClassicControl( this , str , pos , size , style ) ;

    MacPostControlCreate(pos, size) ;

    // only now the embedding is correct and we can do a positioning update

    MacSuperChangedPosition() ;

    if ( m_windowStyle & wxTE_READONLY)
        SetEditable( false ) ;

    SetCursor( wxCursor( wxCURSOR_IBEAM ) ) ;

    return true;
}

void wxTextCtrl::MacSuperChangedPosition()
{
    wxWindow::MacSuperChangedPosition() ;
    GetPeer()->SuperChangedPosition() ;
}

void wxTextCtrl::MacVisibilityChanged()
{
    GetPeer()->VisibilityChanged( MacIsReallyShown() ) ;
}

void wxTextCtrl::MacEnabledStateChanged()
{
}

wxString wxTextCtrl::GetValue() const
{
    return GetPeer()->GetStringValue() ;
}

void wxTextCtrl::GetSelection(long* from, long* to) const
{
    GetPeer()->GetSelection( from , to ) ;
}

void wxTextCtrl::SetValue(const wxString& str)
{
    // optimize redraws
    if ( GetValue() == str )
        return ;

    GetPeer()->SetStringValue( str ) ;

    if ( m_triggerOnSetValue )
    {
        wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, m_windowId );
        event.SetString( GetValue() );
        event.SetEventObject( this );
        GetEventHandler()->ProcessEvent( event );
    }
}

void wxTextCtrl::SetMaxLength(unsigned long len)
{
    m_maxLength = len ;
}

bool wxTextCtrl::SetFont( const wxFont& font )
{
    if ( !wxTextCtrlBase::SetFont( font ) )
        return false ;

    GetPeer()->SetFont( font , GetForegroundColour() , GetWindowStyle() ) ;

    return true ;
}

bool wxTextCtrl::SetStyle(long start, long end, const wxTextAttr& style)
{
    GetPeer()->SetStyle( start , end , style ) ;

    return true ;
}

bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
{
    wxTextCtrlBase::SetDefaultStyle( style ) ;
    SetStyle( kTXNUseCurrentSelection , kTXNUseCurrentSelection , GetDefaultStyle() ) ;

    return true ;
}

// Clipboard operations

void wxTextCtrl::Copy()
{
    if (CanCopy())
        GetPeer()->Copy() ;
}

void wxTextCtrl::Cut()
{
    if (CanCut())
    {
        GetPeer()->Cut() ;

        wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, m_windowId );
        event.SetEventObject( this );
        GetEventHandler()->ProcessEvent( event );
      }
}

void wxTextCtrl::Paste()
{
    if (CanPaste())
    {
        GetPeer()->Paste() ;

        // TODO: eventually we should add setting the default style again

        wxCommandEvent event( wxEVT_COMMAND_TEXT_UPDATED, m_windowId );
        event.SetEventObject( this );
        GetEventHandler()->ProcessEvent( event );
    }
}

bool wxTextCtrl::CanCopy() const
{
    // Can copy if there's a selection
    long from, to;
    GetSelection( &from, &to );

    return (from != to);
}

bool wxTextCtrl::CanCut() const
{
    if ( !IsEditable() )
        return false;

    // Can cut if there's a selection
    long from, to;
    GetSelection( &from, &to );

    return (from != to);
}

bool wxTextCtrl::CanPaste() const
{
    if (!IsEditable())
        return false;

    return GetPeer()->CanPaste() ;
}

void wxTextCtrl::SetEditable(bool editable)
{
    if ( editable != m_editable )
    {
        m_editable = editable ;
        GetPeer()->SetEditable( editable ) ;
    }
}

void wxTextCtrl::SetInsertionPoint(long pos)
{
    SetSelection( pos , pos ) ;
}

void wxTextCtrl::SetInsertionPointEnd()
{
    wxTextPos pos = GetLastPosition();
    SetInsertionPoint( pos );
}

long wxTextCtrl::GetInsertionPoint() const
{
    long begin, end ;
    GetSelection( &begin , &end ) ;

    return begin ;
}

wxTextPos wxTextCtrl::GetLastPosition() const
{
    return GetPeer()->GetLastPosition() ;
}

void wxTextCtrl::Replace(long from, long to, const wxString& str)
{
    GetPeer()->Replace( from , to , str ) ;
}

void wxTextCtrl::Remove(long from, long to)
{
    GetPeer()->Remove( from , to ) ;
}

void wxTextCtrl::SetSelection(long from, long to)
{
    GetPeer()->SetSelection( from , to ) ;
}

bool wxTextCtrl::LoadFile(const wxString& file)
{
    return wxTextCtrlBase::LoadFile( file );
}

void wxTextCtrl::WriteText(const wxString& str)
{
    // TODO: this MPRemoting will be moved into a remoting peer proxy for any command
    if ( !wxIsMainThread() )
    {
        // unfortunately CW 8 is not able to correctly deduce the template types,
        // so we have to instantiate explicitly
        wxMacMPRemoteGUICall<wxTextCtrl,wxString>( this , &wxTextCtrl::WriteText , str ) ;

        return ;
    }

    GetPeer()->WriteText( str ) ;
}

void wxTextCtrl::AppendText(const wxString& text)
{
    SetInsertionPointEnd();
    WriteText( text );
}

void wxTextCtrl::Clear()
{
    GetPeer()->Clear() ;
}

bool wxTextCtrl::IsModified() const
{
    return m_dirty;
}

bool wxTextCtrl::IsEditable() const
{
    return IsEnabled() && m_editable ;
}

bool wxTextCtrl::AcceptsFocus() const
{
    // we don't want focus if we can't be edited
    return /*IsEditable() && */ wxControl::AcceptsFocus();
}

wxSize wxTextCtrl::DoGetBestSize() const
{
    int wText, hText;

    // these are the numbers from the HIG:
    // we reduce them by the borders first
    wText = 100 ;

    switch ( m_windowVariant )
    {
        case wxWINDOW_VARIANT_NORMAL :
            hText = 22 - 6 ;
            break ;

        case wxWINDOW_VARIANT_SMALL :
            hText = 19 - 6 ;
            break ;

        case wxWINDOW_VARIANT_MINI :
            hText = 15 - 6 ;
            break ;

        default :
            hText = 22 - 6;
            break ;
    }

    // as the above numbers have some free space around the text
    // we get 5 lines like this anyway
    if ( m_windowStyle & wxTE_MULTILINE )
         hText *= 5 ;

    if ( !HasFlag(wxNO_BORDER) )
        hText += 6 ;

    return wxSize(wText, hText);
}

// ----------------------------------------------------------------------------
// Undo/redo
// ----------------------------------------------------------------------------

void wxTextCtrl::Undo()
{
    if (CanUndo())
        GetPeer()->Undo() ;
}

void wxTextCtrl::Redo()
{
    if (CanRedo())
        GetPeer()->Redo() ;
}

bool wxTextCtrl::CanUndo() const
{
    if ( !IsEditable() )
        return false ;

    return GetPeer()->CanUndo() ;
}

bool wxTextCtrl::CanRedo() const
{
    if ( !IsEditable() )
        return false ;

    return GetPeer()->CanRedo() ;
}

void wxTextCtrl::MarkDirty()
{
    m_dirty = true;
}

void wxTextCtrl::DiscardEdits()
{
    m_dirty = false;
}

int wxTextCtrl::GetNumberOfLines() const
{
    return GetPeer()->GetNumberOfLines() ;
}

long wxTextCtrl::XYToPosition(long x, long y) const
{
    return GetPeer()->XYToPosition( x , y ) ;
}

bool wxTextCtrl::PositionToXY(long pos, long *x, long *y) const
{
    return GetPeer()->PositionToXY( pos , x , y ) ;
}

void wxTextCtrl::ShowPosition(long pos)
{
    return GetPeer()->ShowPosition(pos) ;
}

int wxTextCtrl::GetLineLength(long lineNo) const
{
    return GetPeer()->GetLineLength(lineNo) ;
}

wxString wxTextCtrl::GetLineText(long lineNo) const
{
    return GetPeer()->GetLineText(lineNo) ;
}

void wxTextCtrl::Command(wxCommandEvent & event)
{
    SetValue(event.GetString());
    ProcessCommand(event);
}

void wxTextCtrl::OnDropFiles(wxDropFilesEvent& event)
{
    // By default, load the first file into the text window.
    if (event.GetNumberOfFiles() > 0)
        LoadFile( event.GetFiles()[0] );
}

void wxTextCtrl::OnEraseBackground(wxEraseEvent& event)
{
    // all erasing should be done by the real mac control implementation
    // while this is true for MLTE under classic, the HITextView is somehow
    // transparent but background erase is not working correctly, so intercept
    // things while we can...
    event.Skip() ;
}

void wxTextCtrl::OnChar(wxKeyEvent& event)
{
    int key = event.GetKeyCode() ;
    bool eat_key = false ;

    if ( key == 'a' && event.MetaDown() )
    {
        SelectAll() ;

        return ;
    }

    if ( key == 'c' && event.MetaDown() )
    {
        if ( CanCopy() )
            Copy() ;

        return ;
    }

    if ( !IsEditable() && key != WXK_LEFT && key != WXK_RIGHT && key != WXK_DOWN && key != WXK_UP && key != WXK_TAB &&
        !( key == WXK_RETURN && ( (m_windowStyle & wxTE_PROCESS_ENTER) || (m_windowStyle & wxTE_MULTILINE) ) )
//        && key != WXK_PAGEUP && key != WXK_PAGEDOWN && key != WXK_HOME && key != WXK_END
        )
    {
        // eat it
        return ;
    }

    // Check if we have reached the max # of chars (if it is set), but still
    // allow navigation and deletion
    if ( !IsMultiLine() && m_maxLength && GetValue().length() >= m_maxLength &&
        key != WXK_LEFT && key != WXK_RIGHT && key != WXK_TAB &&
        key != WXK_BACK && !( key == WXK_RETURN && (m_windowStyle & wxTE_PROCESS_ENTER) )
       )
    {
        // eat it, we don't want to add more than allowed # of characters

        // TODO: generate EVT_TEXT_MAXLEN()
        return;
    }

    // assume that any key not processed yet is going to modify the control
    m_dirty = true;

    if ( key == 'v' && event.MetaDown() )
    {