Mozilla/mozilla/widget/src/windows/nsCheckButton.cpp

/* -*- 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 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 */

#include "nsCheckButton.h"
#include "nsToolkit.h"
#include "nsColor.h"
#include "nsGUIEvent.h"
#include "nsString.h"
#include "nsStringUtil.h"
#include <windows.h>


NS_IMPL_ADDREF(nsCheckButton)
NS_IMPL_RELEASE(nsCheckButton)

//-------------------------------------------------------------------------
//
// nsCheckButton constructor
//
//-------------------------------------------------------------------------
nsCheckButton::nsCheckButton() : nsWindow() , nsICheckButton()
{
  NS_INIT_REFCNT();
}


//-------------------------------------------------------------------------
//
// nsCheckButton destructor
//
//-------------------------------------------------------------------------
nsCheckButton::~nsCheckButton()
{
}


/**
 * Implement the standard QueryInterface for NS_IWIDGET_IID and NS_ISUPPORTS_IID
 * @modify gpk 8/4/98
 * @param aIID The name of the class implementing the method
 * @param _classiiddef The name of the #define symbol that defines the IID
 * for the class (e.g. NS_ISUPPORTS_IID)
 * 
*/ 
nsresult nsCheckButton::QueryInterface(const nsIID& aIID, void** aInstancePtr)
{
    if (NULL == aInstancePtr) {
        return NS_ERROR_NULL_POINTER;
    }

    static NS_DEFINE_IID(kICheckButtonIID, NS_ICHECKBUTTON_IID);
    if (aIID.Equals(kICheckButtonIID)) {
        *aInstancePtr = (void*) ((nsICheckButton*)this);
        NS_ADDREF_THIS();
        return NS_OK;
    }
    return nsWindow::QueryInterface(aIID,aInstancePtr);
}


//-------------------------------------------------------------------------
//
// Set this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsCheckButton::SetState(const PRBool aState)
{
  BOOL state;
  if (aState) 
      state = BST_CHECKED;
  else
      state = BST_UNCHECKED;
  ::SendMessage(mWnd, BM_SETCHECK, (WPARAM)state, (LPARAM)0);
  return NS_OK;
}

//-------------------------------------------------------------------------
//
// Set this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsCheckButton::GetState(PRBool& aState)
{
  if (::SendMessage(mWnd, BM_GETCHECK, (WPARAM)0, (LPARAM)0) == BST_CHECKED)
      aState = PR_TRUE;
  else
      aState = PR_FALSE;
  return NS_OK;
}

//-------------------------------------------------------------------------
//
// Set this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsCheckButton::SetLabel(const nsString& aText)
{
  char label[256];
  aText.ToCString(label, 256);
  label[255] = '\0';
  VERIFY(::SetWindowText(mWnd, label));
  return NS_OK;
}


//-------------------------------------------------------------------------
//
// Get this button label
//
//-------------------------------------------------------------------------
NS_METHOD nsCheckButton::GetLabel(nsString& aBuffer)
{
  int actualSize = ::GetWindowTextLength(mWnd)+1;
  NS_ALLOC_CHAR_BUF(label, 256, actualSize);
  ::GetWindowText(mWnd, label, actualSize);
  aBuffer.SetLength(0);
  aBuffer.Append(label);
  NS_FREE_CHAR_BUF(label);
  return NS_OK;
}

//-------------------------------------------------------------------------
//
// move, paint, resizes message - ignore
//
//-------------------------------------------------------------------------
PRBool nsCheckButton::OnMove(PRInt32, PRInt32)
{
  return PR_FALSE;
}

PRBool nsCheckButton::OnPaint()
{
    return PR_FALSE;
}

PRBool nsCheckButton::OnResize(nsRect &aWindowRect)
{
    return PR_FALSE;
}

//-------------------------------------------------------------------------
//
// return the window class name and initialize the class if needed
//
//-------------------------------------------------------------------------
LPCTSTR nsCheckButton::WindowClass()
{
    return "BUTTON";
}


//-------------------------------------------------------------------------
//
// return window styles
//
//-------------------------------------------------------------------------
DWORD nsCheckButton::WindowStyle()
{
    return BS_CHECKBOX | WS_CHILD | WS_CLIPSIBLINGS; 
}


//-------------------------------------------------------------------------
//
// return window extended styles
//
//-------------------------------------------------------------------------
DWORD nsCheckButton::WindowExStyle()
{
    return 0;
}