/* -*- Mode: C++; tab-width: 4; 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
 *  Zack Rusin <zack@kde.org>.
 * Portions created by the Initial Developer are Copyright (C) 2004
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Lars Knoll <knoll@kde.org>
 *   Zack Rusin <zack@kde.org>
 *
 * 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 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 <QStringList>
#include <QGraphicsWidget>
#include <QGraphicsScene>
#include <QGraphicsView>
#include <QTemporaryFile>

#ifdef MOZ_ENABLE_CONTENTMANAGER
#include "nsMFilePicker.h"
#define MozFileDialog MeegoFileDialog
#else
#include <QFileDialog>
#define MozFileDialog QFileDialog
#endif


#include "nsFilePicker.h"
#include "nsNetUtil.h"
#include "nsIWidget.h"
#include "prlog.h"

#ifdef PR_LOGGING
static PRLogModuleInfo* sFilePickerLog = nsnull;
#endif

#include "nsDirectoryServiceDefs.h"

//-----------------------------

/* Implementation file */
NS_IMPL_ISUPPORTS1(nsFilePicker, nsIFilePicker)

nsFilePicker::nsFilePicker()
    : mMode(nsIFilePicker::modeOpen)
{
#ifdef PR_LOGGING
    if (!sFilePickerLog)
        sFilePickerLog = PR_NewLogModule("nsQtFilePicker");
#endif
}

nsFilePicker::~nsFilePicker()
{
}

NS_IMETHODIMP
nsFilePicker::Init(nsIDOMWindow* parent, const nsAString& title, PRInt16 mode)
{
    return nsBaseFilePicker::Init(parent, title, mode);
}

/* void appendFilters (in long filterMask); */
NS_IMETHODIMP
nsFilePicker::AppendFilters(PRInt32 filterMask)
{
    return nsBaseFilePicker::AppendFilters(filterMask);
}

/* void appendFilter (in AString title, in AString filter); */
NS_IMETHODIMP
nsFilePicker::AppendFilter(const nsAString& aTitle, const nsAString& aFilter)
{
    if (aFilter.Equals(NS_LITERAL_STRING("..apps"))) {
        // No platform specific thing we can do here, really....
        return NS_OK;
    }

    nsCAutoString filter, name;
    CopyUTF16toUTF8(aFilter, filter);
    CopyUTF16toUTF8(aTitle, name);

    mFilters.AppendElement(filter);
    mFilterNames.AppendElement(name);

    return NS_OK;
}

/* attribute AString defaultString; */
NS_IMETHODIMP
nsFilePicker::GetDefaultString(nsAString& aDefaultString)
{
    return NS_ERROR_FAILURE;
}

NS_IMETHODIMP
nsFilePicker::SetDefaultString(const nsAString& aDefaultString)
{
    mDefault = aDefaultString;

    return NS_OK;
}

/* attribute AString defaultExtension; */
NS_IMETHODIMP
nsFilePicker::GetDefaultExtension(nsAString& aDefaultExtension)
{
    aDefaultExtension = mDefaultExtension;

    return NS_OK;
}

NS_IMETHODIMP
nsFilePicker::SetDefaultExtension(const nsAString& aDefaultExtension)
{
    mDefaultExtension = aDefaultExtension;

    return NS_OK;
}

/* attribute long filterIndex; */
NS_IMETHODIMP
nsFilePicker::GetFilterIndex(PRInt32* aFilterIndex)
{
    *aFilterIndex = mSelectedType;

    return NS_OK;
}

NS_IMETHODIMP
nsFilePicker::SetFilterIndex(PRInt32 aFilterIndex)
{
    mSelectedType = aFilterIndex;

    return NS_OK;
}

/* readonly attribute nsILocalFile file; */
NS_IMETHODIMP
nsFilePicker::GetFile(nsILocalFile* *aFile)
{
    NS_ENSURE_ARG_POINTER(aFile);

    *aFile = nsnull;
    if (mFile.IsEmpty()) {
        return NS_OK;
    }

    nsCOMPtr<nsILocalFile> file(do_CreateInstance("@mozilla.org/file/local;1"));
    NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);

    file->InitWithNativePath(mFile);

    NS_ADDREF(*aFile = file);

    return NS_OK;
}

/* readonly attribute nsIFileURL fileURL; */
NS_IMETHODIMP
nsFilePicker::GetFileURL(nsIURI* *aFileURL)
{
    nsCOMPtr<nsILocalFile> file;
    GetFile(getter_AddRefs(file));

    nsCOMPtr<nsIURI> uri;
    NS_NewFileURI(getter_AddRefs(uri), file);
    NS_ENSURE_TRUE(uri, NS_ERROR_FAILURE);

    return CallQueryInterface(uri, aFileURL);
}

/* readonly attribute nsISimpleEnumerator files; */
NS_IMETHODIMP
nsFilePicker::GetFiles(nsISimpleEnumerator* *aFiles)
{
    NS_ENSURE_ARG_POINTER(aFiles);

    if (mMode == nsIFilePicker::modeOpenMultiple) {
        return NS_NewArrayEnumerator(aFiles, mFiles);
    }

    return NS_ERROR_FAILURE;
}

/* short show (); */
NS_IMETHODIMP
nsFilePicker::Show(PRInt16* aReturn)
{
    nsCAutoString directory;
    if (mDisplayDirectory) {
        mDisplayDirectory->GetNativePath(directory);
    }

    QStringList filters;
    PRUint32 count = mFilters.Length();
    for (PRUint32 i = 0; i < count; ++i) {
        filters.append(mFilters[i].get());
    }

    QGraphicsWidget* parentWidget = 0;
    if (mParent) {
        parentWidget = static_cast<QGraphicsWidget*>
            (mParent->GetNativeData(NS_NATIVE_WIDGET));
    }

    QWidget* parentQWidget = 0;
    if (parentWidget && parentWidget->scene()) {
        if (parentWidget->scene()->views().size()>0) {
            parentQWidget = parentWidget->scene()->views()[0];
        }
    }

    QStringList files;
    QString selected;

    switch (mMode) {
    case nsIFilePicker::modeOpen:
        selected = MozFileDialog::getOpenFileName(parentQWidget, mCaption,
                                                  directory.get(), filters.join(";"));
        if (selected.isNull()) {
            *aReturn = nsIFilePicker::returnCancel;
            return NS_OK;
        }
        break;
    case nsIFilePicker::modeOpenMultiple:
        files = MozFileDialog::getOpenFileNames(parentQWidget, mCaption,
                                                directory.get(), filters.join(";"));
        if (files.empty()) {
            *aReturn = nsIFilePicker::returnCancel;
            return NS_OK;
        }
        selected = files[0];
        break;
    case nsIFilePicker::modeSave:
    {
        nsCOMPtr<nsIFile> targetFile;
        NS_GetSpecialDirectory(NS_UNIX_XDG_DOCUMENTS_DIR,
                               getter_AddRefs(targetFile));
        if (!targetFile) {
            // failed to get the XDG directory, using $HOME for now
            NS_GetSpecialDirectory(NS_UNIX_HOME_DIR,
                                   getter_AddRefs(targetFile));
        }

        if (targetFile) {
            targetFile->Append(mDefault);
            nsString targetPath;
            targetFile->GetPath(targetPath);

            PRBool exists = PR_FALSE;
            targetFile->Exists(&exists);
            if (exists) {
                // file exists already create temporary filename
                QTemporaryFile temp(QString::fromUtf16(targetPath.get()));
                temp.open();
                selected = temp.fileName();
                temp.close();
            } else {
                selected = QString::fromUtf16(targetPath.get());
            }
        }
    }
    break;
    case nsIFilePicker::modeGetFolder:
        selected = MozFileDialog::getExistingDirectory(parentQWidget, mCaption,
                                                       directory.get());
        if (selected.isNull()) {
            *aReturn = nsIFilePicker::returnCancel;
            return NS_OK;
        }
    break;
    default:
    break;
    }

    if (!selected.isEmpty()) {
        QString path = QFile::encodeName(selected);
        mFile.Assign(path.toUtf8().data());
    }

    *aReturn = nsIFilePicker::returnOK;
    if (mMode == modeSave) {
        nsCOMPtr<nsILocalFile> file;
        GetFile(getter_AddRefs(file));
        if (file) {
            PRBool exists = PR_FALSE;
            file->Exists(&exists);
            if (exists) {
                *aReturn = nsIFilePicker::returnReplace;
            }
        }
    }

    return NS_OK;
}

void nsFilePicker::InitNative(nsIWidget *aParent, const nsAString &aTitle, PRInt16 mode)
{
    PR_LOG(sFilePickerLog, PR_LOG_DEBUG, ("nsFilePicker::InitNative"));
    nsAutoString str(aTitle);
    mCaption = QString::fromUtf16(str.get());
    mParent = aParent;
    mMode = mode;
}
