/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (info@qt.nokia.com)
**
**
** GNU Lesser General Public License Usage
**
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this file.
** Please review the following information to ensure the GNU Lesser General
** Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** Other Usage
**
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
** If you have questions regarding the use of this file, please contact
** Nokia at info@qt.nokia.com.
**
**************************************************************************/

#include "findincurrentfile.h"
#include "itexteditor.h"

#include <coreplugin/icore.h>
#include <coreplugin/editormanager/editormanager.h>

#include <QtCore/QtDebug>
#include <QtCore/QSettings>
#include <QtCore/QDirIterator>
#include <QtGui/QPushButton>
#include <QtGui/QFileDialog>
#include <QtGui/QVBoxLayout>

using namespace Find;
using namespace TextEditor;
using namespace TextEditor::Internal;

FindInCurrentFile::FindInCurrentFile(SearchResultWindow *resultWindow)
  : BaseFileFind(resultWindow),
    m_configWidget(0),
    m_currentFile(0)
{
    connect(Core::ICore::instance()->editorManager(), SIGNAL(currentEditorChanged(Core::IEditor*)),
            this, SLOT(handleFileChange(Core::IEditor*)));
    handleFileChange(Core::ICore::instance()->editorManager()->currentEditor());
}

QString FindInCurrentFile::id() const
{
    return "Current File";
}

QString FindInCurrentFile::displayName() const
{
    return tr("Current File");
}

Utils::FileIterator *FindInCurrentFile::files() const
{
    Q_ASSERT(isEnabled());
    QString fileName = m_currentFile->fileName();
    QMap<QString, QTextCodec *> openEditorEncodings = ITextEditor::openedTextEditorsEncodings();
    QTextCodec *codec = openEditorEncodings.value(fileName);
    if (!codec)
        codec = Core::EditorManager::instance()->defaultTextCodec();
    return new Utils::FileIterator(QStringList() << fileName, QList<QTextCodec *>() << codec);
}

bool FindInCurrentFile::isEnabled() const
{
    return m_currentFile && !m_currentFile->fileName().isEmpty();
}

void FindInCurrentFile::handleFileChange(Core::IEditor *editor)
{
    if (!editor) {
        if (m_currentFile) {
            m_currentFile = 0;
            emit changed();
        }
    } else {
        Core::IFile *file = editor->file();
        if (file != m_currentFile) {
            m_currentFile = file;
            emit changed();
        }
    }
}


QWidget *FindInCurrentFile::createConfigWidget()
{
    if (!m_configWidget) {
        m_configWidget = new QWidget;
        QGridLayout * const gridLayout = new QGridLayout(m_configWidget);
        gridLayout->setMargin(0);
        m_configWidget->setLayout(gridLayout);
        // just for the layout HACK
        QLabel * const filePatternLabel = new QLabel;
        filePatternLabel->setMinimumWidth(80);
        filePatternLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
        gridLayout->addWidget(filePatternLabel, 0, 0);
    }
    return m_configWidget;
}

void FindInCurrentFile::writeSettings(QSettings *settings)
{
    settings->beginGroup("FindInCurrentFile");
    writeCommonSettings(settings);
    settings->endGroup();
}

void FindInCurrentFile::readSettings(QSettings *settings)
{
    settings->beginGroup("FindInCurrentFile");
    readCommonSettings(settings, "*.cpp,*.h");
    settings->endGroup();
}