/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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 mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * mozilla.org.
 * Portions created by the Initial Developer are Copyright (C) 2006
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Vladimir Vukicevic <vladimir@mozilla.com>
 *
 * 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
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 * use your version of this file under the terms of the MPL, 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 "nsThebesFontEnumerator.h"

#include "nsMemory.h"

#include "gfxPlatform.h"
#include "nsTArray.h"
#include "nsIAtom.h"

NS_IMPL_ISUPPORTS1(nsThebesFontEnumerator, nsIFontEnumerator)

nsThebesFontEnumerator::nsThebesFontEnumerator()
{
}

NS_IMETHODIMP
nsThebesFontEnumerator::EnumerateAllFonts(PRUint32 *aCount,
                                          PRUnichar ***aResult)
{
    return EnumerateFonts (nsnull, nsnull, aCount, aResult);
}

NS_IMETHODIMP
nsThebesFontEnumerator::EnumerateFonts(const char *aLangGroup,
                                       const char *aGeneric,
                                       PRUint32 *aCount,
                                       PRUnichar ***aResult)
{
    NS_ENSURE_ARG_POINTER(aCount);
    NS_ENSURE_ARG_POINTER(aResult);

    nsTArray<nsString> fontList;

    nsCAutoString generic;
    if (aGeneric)
        generic.Assign(aGeneric);
    else
        generic.SetIsVoid(PR_TRUE);

    nsCOMPtr<nsIAtom> langGroupAtom;
    if (aLangGroup) {
        nsCAutoString lowered;
        lowered.Assign(aLangGroup);
        ToLowerCase(lowered);
        langGroupAtom = do_GetAtom(lowered);
    }

    nsresult rv = gfxPlatform::GetPlatform()->GetFontList(langGroupAtom, generic, fontList);

    if (NS_FAILED(rv)) {
        *aCount = 0;
        *aResult = nsnull;
        /* XXX in this case, do we want to return the CSS generics? */
        return NS_OK;
    }

    PRUnichar **fs = static_cast<PRUnichar **>
                                (nsMemory::Alloc(fontList.Length() * sizeof(PRUnichar*)));
    for (PRUint32 i = 0; i < fontList.Length(); i++) {
        fs[i] = ToNewUnicode(fontList[i]);
    }

    *aResult = fs;
    *aCount = fontList.Length();

    return NS_OK;
}

NS_IMETHODIMP
nsThebesFontEnumerator::HaveFontFor(const char *aLangGroup,
                                    PRBool *aResult)
{
    NS_ENSURE_ARG_POINTER(*aResult);
    NS_ENSURE_ARG_POINTER(*aLangGroup);

    *aResult = PR_TRUE;
    return NS_OK;
}

NS_IMETHODIMP
nsThebesFontEnumerator::GetDefaultFont(const char *aLangGroup,
                                       const char *aGeneric,
                                       PRUnichar **aResult)
{
    NS_ENSURE_ARG_POINTER(aResult);
    *aResult = nsnull;
    return NS_OK;
}

NS_IMETHODIMP
nsThebesFontEnumerator::UpdateFontList(PRBool *_retval)
{
    gfxPlatform::GetPlatform()->UpdateFontList();
    *_retval = PR_FALSE; // always return false for now
    return NS_OK;
}

NS_IMETHODIMP
nsThebesFontEnumerator::GetStandardFamilyName(const PRUnichar *aName,
                                              PRUnichar **aResult)
{
    NS_ENSURE_ARG_POINTER(aResult);
    NS_ENSURE_ARG_POINTER(aName);

    nsAutoString name(aName);
    if (name.IsEmpty()) {
        *aResult = nsnull;
        return NS_OK;
    }

    nsAutoString family;
    nsresult rv = gfxPlatform::GetPlatform()->
        GetStandardFamilyName(nsDependentString(aName), family);
    if (NS_FAILED(rv) || family.IsEmpty()) {
        *aResult = nsnull;
        return NS_OK;
    }
    *aResult = ToNewUnicode(family);
    return NS_OK;
}
