A few checks for null pointers to avoid problems during app shutdown.

[wxWidgets.git] / src / osx / cocoa / notebook.mm

///////////////////////////////////////////////////////////////////////////////
// Name:        src/osx/cocoa/notebook.mm
// Purpose:     implementation of wxNotebook
// Author:      Stefan Csomor
// Modified by:
// Created:     1998-01-01
// RCS-ID:      $Id: notebmac.cpp 55079 2008-08-13 14:56:42Z PC $
// Copyright:   (c) Stefan Csomor
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

#include "wx/wxprec.h"

#if wxUSE_NOTEBOOK

#include "wx/notebook.h"

#ifndef WX_PRECOMP
    #include "wx/string.h"
    #include "wx/log.h"
    #include "wx/app.h"
    #include "wx/image.h"
#endif

#include "wx/string.h"
#include "wx/imaglist.h"
#include "wx/osx/private.h"

//
// controller
//

@interface wxTabViewController : NSObject
{
}

- (BOOL)tabView:(NSTabView *)tabView shouldSelectTabViewItem:(NSTabViewItem *)tabViewItem;
- (void)tabView:(NSTabView *)tabView didSelectTabViewItem:(NSTabViewItem *)tabViewItem;

@end

@interface wxNSTabView : NSTabView
{
    wxWidgetCocoaImpl* impl;
}

- (void)setImplementation: (wxWidgetCocoaImpl *) theImplementation;
- (wxWidgetCocoaImpl*) implementation;
- (BOOL) isFlipped;

@end

@implementation wxTabViewController

- (id) init
{
    [super init];
    return self;
}

- (BOOL)tabView:(NSTabView *)tabView shouldSelectTabViewItem:(NSTabViewItem *)tabViewItem
{
    wxNSTabView* view = (wxNSTabView*) tabView;
    wxWidgetCocoaImpl* viewimpl = [view implementation];
    if ( viewimpl )
    {
        wxNotebook* wxpeer = (wxNotebook*) viewimpl->GetWXPeer();
    }
    return YES;
}

- (void)tabView:(NSTabView *)tabView didSelectTabViewItem:(NSTabViewItem *)tabViewItem;

{
    wxNSTabView* view = (wxNSTabView*) tabView;
    wxWidgetCocoaImpl* viewimpl = [view implementation];
    if ( viewimpl )
    {
        wxNotebook* wxpeer = (wxNotebook*) viewimpl->GetWXPeer();
        wxpeer->HandleClicked(0);
    }
}

@end

@implementation wxNSTabView

- (void)setImplementation: (wxWidgetCocoaImpl *) theImplementation
{
    impl = theImplementation;
}

- (wxWidgetCocoaImpl*) implementation
{
    return impl;
}

- (BOOL) isFlipped
{
    return YES;
}

@end

class wxCocoaTabView : public wxWidgetCocoaImpl
{
public:
    wxCocoaTabView( wxWindowMac* peer , WXWidget w ) : wxWidgetCocoaImpl(peer, w)
    {
    }
    
    void GetContentArea( int &left , int &top , int &width , int &height ) const 
    {
        wxNSTabView* slf = (wxNSTabView*) m_osxView;
        NSRect r = [slf contentRect];
        left = r.origin.x;
        top = r.origin.y;
        width = r.size.width;
        height = r.size.height;
    }
    
    void SetValue( wxInt32 value ) 
    {
        wxNSTabView* slf = (wxNSTabView*) m_osxView;
        // avoid 'changed' events when setting the tab programmatically
        wxTabViewController* controller = [slf delegate];
        [slf setDelegate:nil];
        [slf selectTabViewItemAtIndex:(value-1)];
        [slf setDelegate:controller];
    }
    
    wxInt32 GetValue() const
    {
        wxNSTabView* slf = (wxNSTabView*) m_osxView;
        NSTabViewItem* selectedItem = [slf selectedTabViewItem];
        if ( selectedItem == nil )
            return 0;
        else
            return [slf indexOfTabViewItem:selectedItem]+1;
    }
    
    void SetMaximum( wxInt32 maximum )
    {
        wxNSTabView* slf = (wxNSTabView*) m_osxView;
        int cocoacount = [slf numberOfTabViewItems ];
        // avoid 'changed' events when setting the tab programmatically
        wxTabViewController* controller = [slf delegate];
        [slf setDelegate:nil];
        
        if ( maximum > cocoacount )
        {
            for ( int i = cocoacount ; i < maximum ; ++i )
            {
                NSTabViewItem* item = [[NSTabViewItem alloc] init];
                [slf addTabViewItem:item];
                [item release];
            }
        }
        else if ( maximum < cocoacount )
        {
            for ( int i = cocoacount -1 ; i >= maximum ; --i )
            {
                NSTabViewItem* item = [(wxNSTabView*) m_osxView tabViewItemAtIndex:i];
                [slf removeTabViewItem:item];
            }
        }
        [slf setDelegate:controller];
    }

    void SetupTabs( const wxNotebook& notebook)
    {
        int pcount = notebook.GetPageCount();
        
        SetMaximum( pcount );
        
        for ( int i = 0 ; i < pcount ; ++i )
        {
            wxNotebookPage* page = notebook.GetPage(i);
            NSTabViewItem* item = [(wxNSTabView*) m_osxView tabViewItemAtIndex:i];
            [item setView:page->GetHandle() ];
            wxCFStringRef cf( page->GetLabel() , notebook.GetFont().GetEncoding() );
            [item setLabel:cf.AsNSString()];
            if ( notebook.GetImageList() && notebook.GetPageImage(i) >= 0 )
            {
                const wxBitmap bmap = notebook.GetImageList()->GetBitmap( notebook.GetPageImage( i ) ) ;
                if ( bmap.Ok() )
                {
                    // TODO how to set an image on a tab
                }
            }
        }
    }
};


/*
#if 0
    Rect bounds = wxMacGetBoundsForControl( this, pos, size );

    if ( bounds.right <= bounds.left )
        bounds.right = bounds.left + 100;
    if ( bounds.bottom <= bounds.top )
        bounds.bottom = bounds.top + 100;

    UInt16 tabstyle = kControlTabDirectionNorth;
    if ( HasFlag(wxBK_LEFT) )
        tabstyle = kControlTabDirectionWest;
    else if ( HasFlag( wxBK_RIGHT ) )
        tabstyle = kControlTabDirectionEast;
    else if ( HasFlag( wxBK_BOTTOM ) )
        tabstyle = kControlTabDirectionSouth;

    ControlTabSize tabsize;
    switch (GetWindowVariant())
    {
        case wxWINDOW_VARIANT_MINI:
            tabsize = 3 ;
            break;

        case wxWINDOW_VARIANT_SMALL:
            tabsize = kControlTabSizeSmall;
            break;

        default:
            tabsize = kControlTabSizeLarge;
            break;
    }

    m_peer = new wxMacControl( this );
    OSStatus err = CreateTabsControl(
        MAC_WXHWND(parent->MacGetTopLevelWindowRef()), &bounds,
        tabsize, tabstyle, 0, NULL, m_peer->GetControlRefAddr() );
    verify_noerr( err );
#endif
*/
wxWidgetImplType* wxWidgetImpl::CreateTabView( wxWindowMac* wxpeer, 
                                    wxWindowMac* parent, 
                                    wxWindowID id, 
                                    const wxPoint& pos, 
                                    const wxSize& size,
                                    long style, 
                                    long extraStyle)
{
    static wxTabViewController* controller = NULL;

    if ( !controller )
        controller =[[wxTabViewController alloc] init];

    NSView* sv = (wxpeer->GetParent()->GetHandle() );
    
    NSRect r = wxOSXGetFrameForControl( wxpeer, pos , size ) ;
    
    NSTabViewType tabstyle = NSTopTabsBezelBorder;
    if ( style & wxBK_LEFT )
        tabstyle = NSLeftTabsBezelBorder;
    else if ( style & wxBK_RIGHT )
        tabstyle = NSRightTabsBezelBorder;
    else if ( style & wxBK_BOTTOM )
        tabstyle = NSBottomTabsBezelBorder;
    
    wxNSTabView* v = [[wxNSTabView alloc] initWithFrame:r];
    [sv addSubview:v];
    [v setTabViewType:tabstyle];
    wxWidgetCocoaImpl* c = new wxCocoaTabView( wxpeer, v );
    [v setImplementation:c];
    [v setDelegate: controller];
    return c;
}

#endif