moz0813ex.txt

mozilla developer book examples.

#include "plstr.h"
#include "stdio.h"
#include "nsSimple.h"
#include "nsCOMPtr.h"
#include "nsMemory.h"
// c++ constructor
nsSimpleImpl::nsSimpleImpl( ) : mName(nsnull)
{
    NS_INIT_REFCNT( );
     = PL_strdup("default value");
}
// c++ destructor
nsSimpleImpl::~nsSimpleImpl( )
{
    if ( )
        PL_strfree( );
}
// This macro implements the nsISupports interface methods
// QueryInterface, AddRef and Release
NS_IMPL_ISUPPORTS1_CI(nsSimpleImpl, nsISimple);
NS_IMETHODIMP
nsSimpleImpl::GetYourName(char** aName)
{
    NS_PRECONDITION(aName != nsnull, "null ptr");
    if (!aName)
        return NS_ERROR_NULL_POINTER;
    if ( ) {
        *aName = (char*) nsMemory::Alloc(PL_strlen( ) + 1);
        if (! *aName)
            return NS_ERROR_NULL_POINTER;
        PL_strcpy(*aName, );
    }
    else {
        *aName = nsnull;
    }
    return NS_OK;
}
NS_IMETHODIMP
nsSimpleImpl::SetYourName(const char* aName)
{
   NS_PRECONDITION(aName != nsnull, "null ptr");
    if (!aName)
        return NS_ERROR_NULL_POINTER;
    if ( ) {
        PL_strfree( );
    }
     = PL_strdup(aName);
    return NS_OK;
}
NS_IMETHODIMP
nsSimpleImpl::Write( )
{
  printf("%s\n", );
  return NS_OK;
}
NS_IMETHODIMP
nsSimpleImpl::Change(const char* aName)
{
  return SetYourName(aName);
}