made wxFFile a bit more safe: don't crash when Tell() and Length() are called on...

[wxWidgets.git] / src / cocoa / toplevel.mm

///////////////////////////////////////////////////////////////////////////////
// Name:        cocoa/toplevel.mm
// Purpose:     implements wxTopLevelWindow for Cocoa
// Author:      David Elliott 
// Modified by:
// Created:     2002/11/27
// RCS-ID:      $Id$
// Copyright:   (c) 2002 David Elliott
// Licence:     wxWindows licence
///////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifndef WX_PRECOMP
    #include "wx/window.h"
    #include "wx/toplevel.h"
    #include "wx/menuitem.h"
    #include "wx/frame.h"
    #include "wx/log.h"
    #include "wx/app.h"
#endif //WX_PRECOMP

#include "wx/cocoa/autorelease.h"
#include "wx/cocoa/string.h"

#import <AppKit/NSView.h>
#import <AppKit/NSWindow.h>
#import <AppKit/NSPanel.h>
// ----------------------------------------------------------------------------
// globals
// ----------------------------------------------------------------------------

// list of all frames and modeless dialogs
wxWindowList       wxModelessWindows;

// ============================================================================
// wxTopLevelWindowCocoa implementation
// ============================================================================

wxTopLevelWindowCocoa *wxTopLevelWindowCocoa::sm_cocoaDeactivateWindow = NULL;

// ----------------------------------------------------------------------------
// wxTopLevelWindowCocoa creation
// ----------------------------------------------------------------------------
BEGIN_EVENT_TABLE(wxTopLevelWindowCocoa,wxTopLevelWindowBase)
    EVT_CLOSE(wxTopLevelWindowCocoa::OnCloseWindow)
END_EVENT_TABLE()

void wxTopLevelWindowCocoa::Init()
{
    m_iconized =
    m_maximizeOnShow =
    m_closed = false;
}

unsigned int wxTopLevelWindowCocoa::NSWindowStyleForWxStyle(long style)
{
    unsigned int styleMask = 0;
    if(style & wxCAPTION)
        styleMask |= NSTitledWindowMask;
    if(style & wxMINIMIZE_BOX)
        styleMask |= NSMiniaturizableWindowMask;
    #if 0
    if(style & wxMAXIMIZE_BOX)
        styleMask |= NSWindowMask;
        #endif
    if(style & wxCLOSE_BOX)
        styleMask |= NSClosableWindowMask;
    if(style & wxRESIZE_BORDER)
        styleMask |= NSResizableWindowMask;
    if(style & wxSIMPLE_BORDER)
        styleMask |= NSBorderlessWindowMask;
    return styleMask;
}

bool wxTopLevelWindowCocoa::Create(wxWindow *parent,
                                 wxWindowID winid,
                                 const wxString& title,
                                 const wxPoint& pos,
                                 const wxSize& size,
                                 long style,
                                 const wxString& name)
{
    wxAutoNSAutoreleasePool pool;
    wxTopLevelWindows.Append(this);

    if(!CreateBase(parent,winid,pos,size,style,wxDefaultValidator,name))
        return FALSE;

    if ( parent )
        parent->AddChild(this);

    unsigned int cocoaStyle = NSWindowStyleForWxStyle(style);
    if(style & wxFRAME_TOOL_WINDOW)
        cocoaStyle |= NSUtilityWindowMask;

    wxPoint realpos = pos;
    wxSize realsize = size;
    // FIXME: this is lame
    if(realpos.x==-1)
        realpos.x=100;
    if(realpos.y==-1)
        realpos.y=100;
    if(realsize.x==-1)
        realsize.x=200;
    if(realsize.y==-1)
        realsize.y=200;
    // NOTE: y-origin needs to be flipped.
    NSRect cocoaRect = [NSWindow contentRectForFrameRect:NSMakeRect(realpos.x,realpos.y,realsize.x,realsize.y) styleMask:cocoaStyle];

    m_cocoaNSWindow = NULL;
    m_cocoaNSView = NULL;
    if(style & wxFRAME_TOOL_WINDOW)
        SetNSWindow([[NSPanel alloc] initWithContentRect:cocoaRect styleMask:cocoaStyle backing:NSBackingStoreBuffered defer:NO]);
    else
        SetNSWindow([[NSWindow alloc] initWithContentRect:cocoaRect styleMask:cocoaStyle backing:NSBackingStoreBuffered defer:NO]);
    // NOTE: SetNSWindow has retained the Cocoa object for this object.
    // Because we do not release on close, the following release matches the
    // above alloc and thus the retain count will be 1.
    [m_cocoaNSWindow release];

    if(style & wxFRAME_NO_TASKBAR)
        [m_cocoaNSWindow setExcludedFromWindowsMenu: YES];
    if(style & wxSTAY_ON_TOP)
        [m_cocoaNSWindow setLevel:NSFloatingWindowLevel];
    [m_cocoaNSWindow setTitle:wxNSStringWithWxString(title)];
    return TRUE;
}

wxTopLevelWindowCocoa::~wxTopLevelWindowCocoa()
{
    wxASSERT(sm_cocoaDeactivateWindow!=this);
    wxAutoNSAutoreleasePool pool;
    DestroyChildren();
    SetNSWindow(NULL);
}

bool wxTopLevelWindowCocoa::Destroy()
{
    if(sm_cocoaDeactivateWindow==this)
    {
        sm_cocoaDeactivateWindow = NULL;
        wxTopLevelWindowCocoa::CocoaDelegate_windowDidResignKey();
    }
    return wxTopLevelWindowBase::Destroy();
}

// ----------------------------------------------------------------------------
// wxTopLevelWindowCocoa Cocoa Specifics
// ----------------------------------------------------------------------------

wxMenuBar* wxTopLevelWindowCocoa::GetAppMenuBar(wxCocoaNSWindow *win)
{
    wxTopLevelWindowCocoa *parent = wxDynamicCast(GetParent(),wxTopLevelWindow);
    if(parent)
        return parent->GetAppMenuBar(win);
    return NULL;
}

void wxTopLevelWindowCocoa::SetNSWindow(WX_NSWindow cocoaNSWindow)
{
    bool need_debug = cocoaNSWindow || m_cocoaNSWindow;
    if(need_debug) wxLogDebug(wxT("wxTopLevelWindowCocoa=%p::SetNSWindow [m_cocoaNSWindow=%p retainCount]=%d"),this,m_cocoaNSWindow,[m_cocoaNSWindow retainCount]);
    DisassociateNSWindow(m_cocoaNSWindow);
    [cocoaNSWindow retain];
    [m_cocoaNSWindow release];
    m_cocoaNSWindow = cocoaNSWindow;
    if(m_cocoaNSWindow)
        SetNSView([m_cocoaNSWindow contentView]);
    else
        SetNSView(NULL);
    AssociateNSWindow(m_cocoaNSWindow);
    if(need_debug) wxLogDebug(wxT("wxTopLevelWindowCocoa=%p::SetNSWindow [cocoaNSWindow=%p retainCount]=%d"),this,cocoaNSWindow,[cocoaNSWindow retainCount]);
}

void wxTopLevelWindowCocoa::CocoaReplaceView(WX_NSView oldView, WX_NSView newView)
{
    if([m_cocoaNSWindow contentView] == (id)oldView)
        [m_cocoaNSWindow setContentView:newView];
}

/*static*/ void wxTopLevelWindowCocoa::DeactivatePendingWindow()
{
    if(sm_cocoaDeactivateWindow)
        sm_cocoaDeactivateWindow->wxTopLevelWindowCocoa::CocoaDelegate_windowDidResignKey();
    sm_cocoaDeactivateWindow = NULL;
}

void wxTopLevelWindowCocoa::CocoaDelegate_windowDidBecomeKey(void)
{
    DeactivatePendingWindow();
    wxLogDebug(wxT("wxTopLevelWindowCocoa=%p::CocoaDelegate_windowDidBecomeKey"),this);
    wxActivateEvent event(wxEVT_ACTIVATE, TRUE, GetId());
    event.SetEventObject(this);
    GetEventHandler()->ProcessEvent(event);
}

void wxTopLevelWindowCocoa::CocoaDelegate_windowDidResignKey(void)
{
    wxLogDebug(wxT("wxTopLevelWindowCocoa=%p::CocoaDelegate_windowDidResignKey"),this);
    wxActivateEvent event(wxEVT_ACTIVATE, FALSE, GetId());
    event.SetEventObject(this);
    GetEventHandler()->ProcessEvent(event);
}

void wxTopLevelWindowCocoa::CocoaDelegate_windowDidBecomeMain(void)
{
    wxLogDebug(wxT("wxTopLevelWindowCocoa=%p::CocoaDelegate_windowDidBecomeMain"),this);
}

void wxTopLevelWindowCocoa::CocoaDelegate_windowDidResignMain(void)
{
    wxLogDebug(wxT("wxTopLevelWindowCocoa=%p::CocoaDelegate_windowDidResignMain"),this);
}

void wxTopLevelWindowCocoa::CocoaDelegate_windowWillClose(void)
{
    m_closed = true;
    Destroy();
}

bool wxTopLevelWindowCocoa::CocoaDelegate_windowShouldClose()
{
    return wxWindowBase::Close(false);
}

// ----------------------------------------------------------------------------
// wxTopLevelWindowCocoa maximize/minimize
// ----------------------------------------------------------------------------

void wxTopLevelWindowCocoa::Maximize(bool maximize)
{
}

bool wxTopLevelWindowCocoa::IsMaximized() const
{
    return false ; 
}

void wxTopLevelWindowCocoa::Iconize(bool iconize)
{
}

bool wxTopLevelWindowCocoa::IsIconized() const
{
    return FALSE;
}

void wxTopLevelWindowCocoa::Restore()
{
}

bool wxTopLevelWindowCocoa::Show(bool show)
{
    if(m_isShown == show)
        return false;
    wxAutoNSAutoreleasePool pool;
    if(show)
    {
        // Send the window a size event because wxWindows apps expect it
        // NOTE: This should really only be done the first time a window
        // is shown.  I doubt this will cause any problems though.
        wxSizeEvent event(GetSize(), GetId());
        event.SetEventObject(this);
        GetEventHandler()->ProcessEvent(event);

        [m_cocoaNSWindow makeKeyAndOrderFront:m_cocoaNSWindow];
    }
    else
        [m_cocoaNSWindow orderOut:m_cocoaNSWindow];
    m_isShown = show;
    return true;
}

bool wxTopLevelWindowCocoa::Close(bool force)
{
    if(force)
        return wxWindowBase::Close(force);
    // performClose  will fake the user clicking the close button which
    // will invoke windowShouldClose which will call the base class version
    // of Close() which will NOT Destroy() the window (see below) but
    // if closing is not stopped, then performClose will go ahead and
    // close the window which will send the close notifications setting
    // m_closed to true and Destroy()ing the window.
    [m_cocoaNSWindow performClose:m_cocoaNSWindow];
    return m_closed;
}

void wxTopLevelWindowCocoa::OnCloseWindow(wxCloseEvent& event)
{
    // If the event was forced, close the window which will Destroy() it
    if(!event.CanVeto())
        [m_cocoaNSWindow close];
    // if the event was not forced, it's probably because the user clicked
    // the close button, or Close(false) was called which (see above) is
    // redirected to performClose and thus Cocoa itself will close the window
}

// ----------------------------------------------------------------------------
// wxTopLevelWindowCocoa misc
// ----------------------------------------------------------------------------

bool wxTopLevelWindowCocoa::ShowFullScreen(bool show, long style)
{
    return FALSE;
}

bool wxTopLevelWindowCocoa::IsFullScreen() const
{
    return FALSE;
}

void wxTopLevelWindowCocoa::CocoaSetWxWindowSize(int width, int height)
{
    // Set the NSView size by setting the frame size to enclose it
    unsigned int styleMask = [m_cocoaNSWindow styleMask];
    NSRect frameRect = [m_cocoaNSWindow frame];
    NSRect contentRect = [NSWindow
        contentRectForFrameRect: frameRect
        styleMask: styleMask];
    contentRect.size.width = width;
    contentRect.size.height = height;
    frameRect = [NSWindow
        frameRectForContentRect: contentRect
        styleMask: styleMask];
    [m_cocoaNSWindow setFrame: frameRect display: NO];
}

void wxTopLevelWindowCocoa::DoMoveWindow(int x, int y, int width, int height)
{
//    wxLogDebug("wxTopLevelWindow=%p::DoMoveWindow(%d,%d,%d,%d)",this,x,y,width,height);

    NSRect cocoaRect = NSMakeRect(x,y,width,height);
    [m_cocoaNSWindow setFrame: cocoaRect display:NO];
}

void wxTopLevelWindowCocoa::DoGetSize(int *w, int *h) const
{
    NSRect cocoaRect = [m_cocoaNSWindow frame];
    if(w)
        *w=(int)cocoaRect.size.width;
    if(h)
        *h=(int)cocoaRect.size.height;
//    wxLogDebug("wxTopLevelWindow=%p::DoGetSize = (%d,%d)",this,(int)cocoaRect.size.width,(int)cocoaRect.size.height);
}

void wxTopLevelWindowCocoa::DoGetPosition(int *x, int *y) const
{
    NSRect cocoaRect = [m_cocoaNSWindow frame];
    if(x)
        *x=(int)cocoaRect.origin.x;
    if(y)
        *y=(int)cocoaRect.origin.y;
//    wxLogDebug("wxTopLevelWindow=%p::DoGetPosition = (%d,%d)",this,(int)cocoaRect.origin.x,(int)cocoaRect.origin.y);
}