/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

#include "xp_core.h"			//this is a hack to get it to build. MMP
#include "nscore.h"
#include "nsIFactory.h"
#include "nsISupports.h"
#include "nsGfxCIID.h"
#include "nsFontMetricsMotif.h"
#include "nsRenderingContextMotif.h"
#include "nsImageMotif.h"
#include "nsDeviceContextMotif.h"
#include "nsRegionMotif.h"

static NS_DEFINE_IID(kCFontMetrics, NS_FONT_METRICS_CID);
static NS_DEFINE_IID(kCRenderingContext, NS_RENDERING_CONTEXT_CID);
static NS_DEFINE_IID(kCImage, NS_IMAGE_CID);
static NS_DEFINE_IID(kCDeviceContext, NS_DEVICE_CONTEXT_CID);
static NS_DEFINE_IID(kCRegion, NS_REGION_CID);

static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);

class nsGfxFactoryMotif : public nsIFactory
{   
  public:   
    NS_DECL_ISUPPORTS
    NS_DECL_NSIFACTORY

    nsGfxFactoryMotif(const nsCID &aClass);   
    virtual ~nsGfxFactoryMotif();   

  private:   
    nsCID     mClassID;
};   

nsGfxFactoryMotif::nsGfxFactoryMotif(const nsCID &aClass)   
{   
  NS_INIT_REFCNT();
  mClassID = aClass;
}   

nsGfxFactoryMotif::~nsGfxFactoryMotif()   
{   
}   

nsresult nsGfxFactoryMotif::QueryInterface(const nsIID &aIID,   
                                         void **aResult)   
{   
  if (aResult == NULL) {   
    return NS_ERROR_NULL_POINTER;   
  }   

  // Always NULL result, in case of failure   
  *aResult = NULL;   

  if (aIID.Equals(kISupportsIID)) {   
    *aResult = (void *)(nsISupports*)this;   
  } else if (aIID.Equals(kIFactoryIID)) {   
    *aResult = (void *)(nsIFactory*)this;   
  }   

  if (*aResult == NULL) {   
    return NS_NOINTERFACE;   
  }   

  AddRef(); // Increase reference count for caller   
  return NS_OK;   
}   

NS_IMPL_ADDREF(nsGfxFactoryMotif);
NS_IMPL_RELEASE(nsGfxFactoryMotif);

nsresult nsGfxFactoryMotif::CreateInstance(nsISupports *aOuter,  
                                          const nsIID &aIID,  
                                          void **aResult)  
{  
  if (aResult == NULL) {  
    return NS_ERROR_NULL_POINTER;  
  }  

  *aResult = NULL;  
  
  nsISupports *inst = nsnull;

  if (mClassID.Equals(kCFontMetrics)) {
    inst = (nsISupports *)new nsFontMetricsMotif();
  }
  else if (mClassID.Equals(kCDeviceContext)) {
    inst = (nsISupports *)new nsDeviceContextMotif();
  }
  else if (mClassID.Equals(kCRenderingContext)) {
    inst = (nsISupports *)new nsRenderingContextMotif();
  }
  else if (mClassID.Equals(kCImage)) {
    inst = (nsISupports *)new nsImageMotif();
  }
  else if (mClassID.Equals(kCRegion)) {
    inst = (nsISupports *)new nsRegionMotif();
  }

  if (inst == NULL) {  
    return NS_ERROR_OUT_OF_MEMORY;  
  }  

  nsresult res = inst->QueryInterface(aIID, aResult);

  if (res != NS_OK) {  
    // We didn't get the right interface, so clean up  
    delete inst;  
  }  
//  else {
//    inst->Release();
//  }

  return res;  
}  

nsresult nsGfxFactoryMotif::LockFactory(PRBool aLock)  
{  
  // Not implemented in simplest case.  
  return NS_OK;
}  

// return the proper factory to the caller
extern "C" NS_GFXNONXP nsresult NSGetFactory(nsISupports* servMgr,
                                             const nsCID &aClass,
                                             const char *aClassName,
                                             const char *aProgID,
                                             nsIFactory **aFactory)
{
  if (nsnull == aFactory) {
    return NS_ERROR_NULL_POINTER;
  }

  *aFactory = new nsGfxFactoryMotif(aClass);

  if (nsnull == aFactory) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  return (*aFactory)->QueryInterface(kIFactoryIID, (void**)aFactory);
}
