/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ----- BEGIN LICENSE BLOCK -----
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla 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/MPL/
 *
 * 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 the Mozilla SVG project.
 *
 * The Initial Developer of the Original Code is 
 * Crocodile Clips Ltd..
 * Portions created by the Initial Developer are Copyright (C) 2001
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *    Alex Fritze <alex.fritze@crocodile-clips.com> (original author)
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or 
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the NPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ----- END LICENSE BLOCK ----- */

#include "nsSVGRect.h"
#include "prdtoa.h"
#include "nsSVGValue.h"
#include "nsTextFormatter.h"
#include "nsCRT.h"

////////////////////////////////////////////////////////////////////////
// nsSVGRect class

class nsSVGRect : public nsIDOMSVGRect,
                  public nsSVGValue
{
public:
  static nsresult Create(nsIDOMSVGRect** result,
                         float x=0.0f, float y=0.0f,
                         float w=0.0f, float h=0.0f);
protected:
  nsSVGRect(float x, float y, float w, float h);
  
public:
  // nsISupports interface:
  NS_DECL_ISUPPORTS

  // nsIDOMSVGRect interface:
  NS_DECL_NSIDOMSVGRECT

  // nsISVGValue interface:
  NS_IMETHOD SetValueString(const nsAString& aValue);
  NS_IMETHOD GetValueString(nsAString& aValue);
  
  
protected:
  float mX, mY, mWidth, mHeight;
};

//----------------------------------------------------------------------
// implementation:

nsresult
nsSVGRect::Create(nsIDOMSVGRect** result,
                        float x, float y, float w, float h)
{
  *result = (nsIDOMSVGRect*) new nsSVGRect(x,y,w,h);
  if(!*result) return NS_ERROR_OUT_OF_MEMORY;
  
  NS_ADDREF(*result);
  return NS_OK;
}


nsSVGRect::nsSVGRect(float x, float y, float w, float h)
    : mX(x), mY(y), mWidth(w), mHeight(h)
{
}

//----------------------------------------------------------------------
// nsISupports methods:

NS_IMPL_ADDREF(nsSVGRect)
NS_IMPL_RELEASE(nsSVGRect)

NS_INTERFACE_MAP_BEGIN(nsSVGRect)
  NS_INTERFACE_MAP_ENTRY(nsISVGValue)
  NS_INTERFACE_MAP_ENTRY(nsIDOMSVGRect)
  NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(SVGRect)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsISVGValue)
NS_INTERFACE_MAP_END

//----------------------------------------------------------------------
// nsISVGValue methods:

NS_IMETHODIMP
nsSVGRect::SetValueString(const nsAString& aValue)
{
  nsresult rv = NS_OK;

  char* str = ToNewCString(aValue);

  char* rest = str;
  char* token;
  const char* delimiters = ",\x20\x9\xD\xA";

  double vals[4];
  int i;
  for (i=0;i<4;++i) {
    if (!(token = nsCRT::strtok(rest, delimiters, &rest))) break; // parse error
    
    char *end;
    vals[i] = PR_strtod(token, &end);
    if (*end != '\0') break; // parse error
  }
  if (i!=4 || (nsCRT::strtok(rest, delimiters, &rest)!=0)) {
    // there was a parse error.
    rv = NS_ERROR_FAILURE;
  }
  else {
    WillModify();
    mX      = (double)vals[0];
    mY      = (double)vals[1];
    mWidth  = (double)vals[2];
    mHeight = (double)vals[3];
    DidModify();
  }
  
  return rv;
}

NS_IMETHODIMP
nsSVGRect::GetValueString(nsAString& aValue)
{
  PRUnichar buf[200];
  nsTextFormatter::snprintf(buf, sizeof(buf)/sizeof(PRUnichar),
                            NS_LITERAL_STRING("%g %g %g %g").get(),
                            (double)mX, (double)mY,
                            (double)mWidth, (double)mHeight);
  aValue.Append(buf);
  
  return NS_OK;
}

//----------------------------------------------------------------------
// nsIDOMSVGRect methods:

/* attribute float x; */
NS_IMETHODIMP nsSVGRect::GetX(float *aX)
{
  *aX = mX;
  return NS_OK;
}
NS_IMETHODIMP nsSVGRect::SetX(float aX)
{
  WillModify();
  mX = aX;
  DidModify();
  return NS_OK;
}

/* attribute float y; */
NS_IMETHODIMP nsSVGRect::GetY(float *aY)
{
  *aY = mY;
  return NS_OK;
}
NS_IMETHODIMP nsSVGRect::SetY(float aY)
{
  WillModify();
  mY = aY;
  DidModify();
  return NS_OK;
}

/* attribute float width; */
NS_IMETHODIMP nsSVGRect::GetWidth(float *aWidth)
{
  *aWidth = mWidth;
  return NS_OK;
}
NS_IMETHODIMP nsSVGRect::SetWidth(float aWidth)
{
  WillModify();
  mWidth = aWidth;
  DidModify();
  return NS_OK;
}

/* attribute float height; */
NS_IMETHODIMP nsSVGRect::GetHeight(float *aHeight)
{
  *aHeight = mHeight;
  return NS_OK;
}
NS_IMETHODIMP nsSVGRect::SetHeight(float aHeight)
{
  WillModify();
  mHeight = aHeight;
  DidModify();
  return NS_OK;
}


////////////////////////////////////////////////////////////////////////
// nsSVGRect prototype wrapper class
// delegates all 'getter' calls to the given prototype if the property
// hasn't been set on the object directly

class nsSVGRectPrototypeWrapper : public nsIDOMSVGRect,
                                  public nsSVGValue
{
public:
  static nsresult Create(nsIDOMSVGRect** result,
                         nsIDOMSVGRect* prototype,
                         nsIDOMSVGRect* body=nsnull);
protected:
  nsSVGRectPrototypeWrapper(nsIDOMSVGRect* prototype,
                            nsIDOMSVGRect* body);
  virtual ~nsSVGRectPrototypeWrapper();
  
public:
  // nsISupports interface:
  NS_DECL_ISUPPORTS

  // nsIDOMSVGRect interface:
  NS_DECL_NSIDOMSVGRECT

  // nsISVGValue interface:
  NS_IMETHOD SetValueString(const nsAString& aValue);
  NS_IMETHOD GetValueString(nsAString& aValue);
  
  
protected:
  void EnsureBody();
  nsIDOMSVGRect* Delegate() { return mBody ? mBody.get() : mPrototype.get(); }
  
  nsCOMPtr<nsIDOMSVGRect> mPrototype;
  nsCOMPtr<nsIDOMSVGRect> mBody;
};

//----------------------------------------------------------------------
// implementation:

nsresult
nsSVGRectPrototypeWrapper::Create(nsIDOMSVGRect** result,
                                  nsIDOMSVGRect* prototype,
                                  nsIDOMSVGRect* body)
{
  *result = (nsIDOMSVGRect*) new nsSVGRectPrototypeWrapper(prototype, body);
  if(!*result) return NS_ERROR_OUT_OF_MEMORY;
  
  NS_ADDREF(*result);
  return NS_OK;
}

nsSVGRectPrototypeWrapper::nsSVGRectPrototypeWrapper(nsIDOMSVGRect* prototype,
                                                     nsIDOMSVGRect* body)
    : mPrototype(prototype), mBody(body)
{
  NS_ASSERTION(mPrototype, "need prototype");
}

nsSVGRectPrototypeWrapper::~nsSVGRectPrototypeWrapper()
{
//   if (mBody) {
//     nsCOMPtr<nsISVGValue> val = do_QueryInterface(mBody);
//     if (val)
//       val->RemoveObserver(this);
//   }
}

void nsSVGRectPrototypeWrapper::EnsureBody()
{
  if (mBody) return;

  nsSVGRect::Create(getter_AddRefs(mBody));
  NS_ASSERTION(mBody, "couldn't create body");
//   nsCOMPtr<nsISVGValue> val = do_QueryInterface(mBody);
//   if (val)
//     val->AddObserver(this);
}

//----------------------------------------------------------------------
// nsISupports methods:

NS_IMPL_ADDREF(nsSVGRectPrototypeWrapper)
NS_IMPL_RELEASE(nsSVGRectPrototypeWrapper)

NS_INTERFACE_MAP_BEGIN(nsSVGRectPrototypeWrapper)
  NS_INTERFACE_MAP_ENTRY(nsISVGValue)
  NS_INTERFACE_MAP_ENTRY(nsIDOMSVGRect)
  NS_INTERFACE_MAP_ENTRY_CONTENT_CLASSINFO(SVGRect)
  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsISVGValue)
NS_INTERFACE_MAP_END

//----------------------------------------------------------------------
// nsISVGValue methods:

NS_IMETHODIMP
nsSVGRectPrototypeWrapper::SetValueString(const nsAString& aValue)
{
  EnsureBody();
  nsCOMPtr<nsISVGValue> val = do_QueryInterface(mBody);
  NS_ASSERTION(val, "missing interface on body");

  return val->SetValueString(aValue);
}

NS_IMETHODIMP
nsSVGRectPrototypeWrapper::GetValueString(nsAString& aValue)
{
  nsCOMPtr<nsISVGValue> val = do_QueryInterface( Delegate() );
  NS_ASSERTION(val, "missing interface on body");
  
  return val->GetValueString(aValue);
}

//----------------------------------------------------------------------
// nsIDOMSVGRect methods:

/* attribute float x; */
NS_IMETHODIMP nsSVGRectPrototypeWrapper::GetX(float *aX)
{
  return Delegate()->GetX(aX);
}
NS_IMETHODIMP nsSVGRectPrototypeWrapper::SetX(float aX)
{
  WillModify();
  EnsureBody();
  nsresult rv =  mBody->SetX(aX);
  DidModify();
  return rv;
}

/* attribute float y; */
NS_IMETHODIMP nsSVGRectPrototypeWrapper::GetY(float *aY)
{
  return Delegate()->GetY(aY);
}
NS_IMETHODIMP nsSVGRectPrototypeWrapper::SetY(float aY)
{
  WillModify();
  EnsureBody();
  nsresult rv = mBody->SetY(aY);
  DidModify();
  return rv;
}

/* attribute float width; */
NS_IMETHODIMP nsSVGRectPrototypeWrapper::GetWidth(float *aWidth)
{
  return Delegate()->GetWidth(aWidth);
}
NS_IMETHODIMP nsSVGRectPrototypeWrapper::SetWidth(float aWidth)
{
  WillModify();
  EnsureBody();
  nsresult rv = mBody->SetWidth(aWidth);
  DidModify();
  return rv;
}

/* attribute float height; */
NS_IMETHODIMP nsSVGRectPrototypeWrapper::GetHeight(float *aHeight)
{
  return Delegate()->GetHeight(aHeight);
}
NS_IMETHODIMP nsSVGRectPrototypeWrapper::SetHeight(float aHeight)
{
  WillModify();
  EnsureBody();
  nsresult rv = mBody->SetHeight(aHeight);
  DidModify();
  return rv;
}


////////////////////////////////////////////////////////////////////////
// Exported creation functions:

nsresult
NS_NewSVGRect(nsIDOMSVGRect** result, float x, float y,
              float width, float height)
{
  return nsSVGRect::Create(result, x, y, width, height);
}

nsresult
NS_NewSVGRectPrototypeWrapper(nsIDOMSVGRect** result,
                              nsIDOMSVGRect* prototype)
{
  return nsSVGRectPrototypeWrapper::Create(result, prototype);
}