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/**************************************************************************
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**
** This file is part of Qt Creator
**
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** Copyright (c) 2012 Nokia Corporation and/or its subsidiary(-ies).
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**
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** Contact: http://www.qt-project.org/
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**
** GNU Lesser General Public License Usage
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** 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.
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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** 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.
**
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**
**************************************************************************/
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#include "findinfiles.h"

#include <coreplugin/editormanager/editormanager.h>

#include <QtDebug>
#include <QSettings>
#include <QDir>
#include <QDirIterator>
#include <QPushButton>
#include <QFileDialog>
#include <QHBoxLayout>
#include <QVBoxLayout>
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using namespace Find;
using namespace TextEditor;
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FindInFiles::FindInFiles()
  : m_configWidget(0),
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    m_directory(0)
{
}

QString FindInFiles::id() const
{
    return QLatin1String("Files on Disk");
QString FindInFiles::displayName() const
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{
    return tr("Files on File System");
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}

void FindInFiles::findAll(const QString &txt, Find::FindFlags findFlags)
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{
    updateComboEntries(m_directory, true);
    BaseFileFind::findAll(txt, findFlags);
}

Utils::FileIterator *FindInFiles::files(const QStringList &nameFilters,
                                        const QVariant &additionalParameters) const
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{
    return new Utils::SubDirFileIterator(QStringList() << additionalParameters.toString(),
                                         nameFilters,
                                         Core::EditorManager::instance()->defaultTextCodec());
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}

QVariant FindInFiles::additionalParameters() const
{
    return qVariantFromValue(QDir::fromNativeSeparators(m_directory->currentText()));
}

QString FindInFiles::label() const
{
    const QChar slash = QLatin1Char('/');
    const QStringList &nonEmptyComponents = QDir::cleanPath(
                QFileInfo(QDir::fromNativeSeparators(m_directory->currentText())).absoluteFilePath())
            .split(slash, QString::SkipEmptyParts);
    return tr("Directory '%1':").arg(nonEmptyComponents.isEmpty() ? QString(slash) : nonEmptyComponents.last());
}

QString FindInFiles::toolTip() const
{
    //: %3 is filled by BaseFileFind::runNewSearch
    return tr("Path: %1\nFilter: %2\n%3")
            .arg(QDir::toNativeSeparators(QFileInfo(m_directory->currentText()).absoluteFilePath()))
            .arg(fileNameFilters().join(QLatin1String(",")));
}

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QWidget *FindInFiles::createConfigWidget()
{
    if (!m_configWidget) {
        m_configWidget = new QWidget;
        QGridLayout * const gridLayout = new QGridLayout(m_configWidget);
        gridLayout->setMargin(0);
        m_configWidget->setLayout(gridLayout);

        QLabel *dirLabel = new QLabel(tr("Director&y:"));
        gridLayout->addWidget(dirLabel, 0, 0, Qt::AlignRight);
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        m_directory = new QComboBox;
        m_directory->setEditable(true);
        m_directory->setMaxCount(30);
        m_directory->setMinimumContentsLength(10);
        m_directory->setSizeAdjustPolicy(QComboBox::AdjustToMinimumContentsLengthWithIcon);
        m_directory->setInsertPolicy(QComboBox::InsertAtTop);
        m_directory->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
        m_directory->setModel(&m_directoryStrings);
        syncComboWithSettings(m_directory, m_directorySetting);
        dirLabel->setBuddy(m_directory);
        gridLayout->addWidget(m_directory, 0, 1);
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        QPushButton *browseButton = new QPushButton(tr("&Browse..."));
        gridLayout->addWidget(browseButton, 0, 2);
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        connect(browseButton, SIGNAL(clicked()), this, SLOT(openFileBrowser()));

        QLabel * const filePatternLabel = new QLabel(tr("Fi&le pattern:"));
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        filePatternLabel->setMinimumWidth(80);
        filePatternLabel->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
        filePatternLabel->setAlignment(Qt::AlignRight | Qt::AlignVCenter);
        QWidget *patternWidget = createPatternWidget();
        filePatternLabel->setBuddy(patternWidget);
        gridLayout->addWidget(filePatternLabel, 1, 0);
        gridLayout->addWidget(patternWidget, 1, 1, 1, 2);
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        m_configWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Preferred);
    }
    return m_configWidget;
}

void FindInFiles::openFileBrowser()
{
    if (!m_directory)
        return;
    QString oldDir = m_directory->currentText();
    if (!QDir(oldDir).exists())
        oldDir.clear();
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    QString dir = QFileDialog::getExistingDirectory(m_configWidget,
        tr("Directory to search"), oldDir);
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    if (!dir.isEmpty())
        m_directory->setEditText(QDir::toNativeSeparators(dir));
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}

void FindInFiles::writeSettings(QSettings *settings)
{
    settings->beginGroup(QLatin1String("FindInFiles"));
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    writeCommonSettings(settings);
    settings->setValue(QLatin1String("directories"), m_directoryStrings.stringList());
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    if (m_directory)
        settings->setValue(QLatin1String("currentDirectory"), m_directory->currentText());
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    settings->endGroup();
}

void FindInFiles::readSettings(QSettings *settings)
{
    settings->beginGroup(QLatin1String("FindInFiles"));
    readCommonSettings(settings, QLatin1String("*.cpp,*.h"));
    m_directoryStrings.setStringList(settings->value(QLatin1String("directories")).toStringList());
    m_directorySetting = settings->value(QLatin1String("currentDirectory")).toString();
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    settings->endGroup();
    syncComboWithSettings(m_directory, m_directorySetting);
}

void FindInFiles::setDirectory(const QString &directory)
{
    syncComboWithSettings(m_directory, directory);
}