/**************************************************************************
**
** 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 "qmakestep.h"
#include "ui_qmakestep.h"

#include <projectexplorer/projectexplorerconstants.h>
#include "qmakeparser.h"
#include "qt4buildconfiguration.h"
#include "qt4project.h"
#include "qt4projectmanagerconstants.h"
#include "qt4projectmanager.h"
#include "qt4target.h"
#include "qt4basetargetfactory.h"
#include "ui_showbuildlog.h"

#include <projectexplorer/buildsteplist.h>
#include <projectexplorer/toolchain.h>

#include <coreplugin/icore.h>
#include <coreplugin/progressmanager/progressmanager.h>
#include <coreplugin/messagemanager.h>
#include <qtsupport/qtversionmanager.h>
#include <qtsupport/debugginghelperbuildtask.h>
#include <utils/qtcassert.h>
#include <utils/qtcprocess.h>

#include <QtCore/QDir>
#include <QtCore/QFile>
#include <qtconcurrent/runextensions.h>
#include <QtCore/QtConcurrentRun>

using namespace Qt4ProjectManager;
using namespace Qt4ProjectManager::Internal;
using namespace ProjectExplorer;

namespace {
const char * const QMAKE_BS_ID("QtProjectManager.QMakeBuildStep");

const char * const QMAKE_ARGUMENTS_KEY("QtProjectManager.QMakeBuildStep.QMakeArguments");
const char * const QMAKE_FORCED_KEY("QtProjectManager.QMakeBuildStep.QMakeForced");
const char * const QMAKE_QMLDEBUGLIBAUTO_KEY("QtProjectManager.QMakeBuildStep.LinkQmlDebuggingLibraryAuto");
const char * const QMAKE_QMLDEBUGLIB_KEY("QtProjectManager.QMakeBuildStep.LinkQmlDebuggingLibrary");
}

QMakeStep::QMakeStep(BuildStepList *bsl) :
    AbstractProcessStep(bsl, QLatin1String(QMAKE_BS_ID)),
    m_forced(false),
    m_linkQmlDebuggingLibrary(DebugLink)
{
    ctor();
}

QMakeStep::QMakeStep(BuildStepList *bsl, const QString &id) :
    AbstractProcessStep(bsl, id),
    m_forced(false),
    m_linkQmlDebuggingLibrary(DebugLink)
{
    ctor();
}

QMakeStep::QMakeStep(BuildStepList *bsl, QMakeStep *bs) :
    AbstractProcessStep(bsl, bs),
    m_forced(bs->m_forced),
    m_userArgs(bs->m_userArgs),
    m_linkQmlDebuggingLibrary(bs->m_linkQmlDebuggingLibrary)
{
    ctor();
}

void QMakeStep::ctor()
{
    //: QMakeStep default display name
    setDefaultDisplayName(tr("qmake"));
}

QMakeStep::~QMakeStep()
{
}

Qt4BuildConfiguration *QMakeStep::qt4BuildConfiguration() const
{
    return static_cast<Qt4BuildConfiguration *>(buildConfiguration());
}

///
/// Returns all arguments
/// That is: possbile subpath
/// spec
/// config arguemnts
/// moreArguments
/// user arguments
QString QMakeStep::allArguments(bool shorted)
{
    QString additonalArguments = m_userArgs;
    Qt4BuildConfiguration *bc = qt4BuildConfiguration();
    QStringList arguments;
    if (bc->subNodeBuild())
        arguments << QDir::toNativeSeparators(bc->subNodeBuild()->path());
    else if (shorted)
        arguments << QDir::toNativeSeparators(QFileInfo(
                buildConfiguration()->target()->project()->file()->fileName()).fileName());
    else
        arguments << QDir::toNativeSeparators(buildConfiguration()->target()->project()->file()->fileName());
    arguments << "-r";

    bool haveSpec = false;
    for (Utils::QtcProcess::ArgIterator ait(&additonalArguments); ait.next(); )
        if (ait.value() == QLatin1String("-spec"))
            haveSpec = true;

    if (!haveSpec) {
        const QString tcSpec = bc->toolChain() ? bc->toolChain()->mkspec() : QString();
        if (tcSpec.isEmpty()) {
            if (bc->qtVersion())
                arguments << "-spec" << bc->qtVersion()->mkspec();
        } else if (!bc->qtVersion() || bc->qtVersion()->hasMkspec(tcSpec)) {
            arguments << "-spec" << tcSpec;
        } else {
            arguments << "-spec" << bc->qtVersion()->mkspec();
        }
    }

    // Find out what flags we pass on to qmake
    arguments << bc->configCommandLineArguments();

    arguments << moreArguments();

    QString args = Utils::QtcProcess::joinArgs(arguments);
    Utils::QtcProcess::addArgs(&args, additonalArguments);
    return args;
}

///
/// moreArguments,
/// -unix for Maemo
/// -after OBJECTS_DIR, MOC_DIR, UI_DIR, RCC_DIR
/// QMAKE_VAR_QMLJSDEBUGGER_PATH
QStringList QMakeStep::moreArguments()
{
    Qt4BuildConfiguration *bc = qt4BuildConfiguration();
    QStringList arguments;
#if defined(Q_OS_WIN) || defined(Q_OS_MAC)
    ProjectExplorer::ToolChain *tc = bc->toolChain();
    if (tc && (tc->targetAbi().osFlavor() == ProjectExplorer::Abi::HarmattanLinuxFlavor
               || tc->targetAbi().osFlavor() == ProjectExplorer::Abi::MaemoLinuxFlavor))
        arguments << QLatin1String("-unix");
#endif

    if (linkQmlDebuggingLibrary() && bc->qtVersion()) {
        if (!bc->qtVersion()->needsQmlDebuggingLibrary()) {
            // This Qt version has the QML debugging services built in, however
            // they still need to be enabled at compile time
            arguments << QLatin1String("CONFIG+=declarative_debug");
        } else {
            QString qmlDebuggingHelperLibrary = bc->qtVersion()->qmlDebuggingHelperLibrary(true);
            if (!qmlDebuggingHelperLibrary.isEmpty()) {
                // Do not turn debugger path into native path separators: Qmake does not like that!
                const QString debuggingHelperPath
                        = QFileInfo(qmlDebuggingHelperLibrary).dir().path();

                arguments << QLatin1String(Constants::QMAKEVAR_QMLJSDEBUGGER_PATH)
                             + QLatin1Char('=') + debuggingHelperPath;
            }
        }
    }

    if (bc->qtVersion() && !bc->qtVersion()->supportsShadowBuilds()) {
        // We have a target which does not allow shadow building.
        // But we really don't want to have the build artefacts in the source dir
        // so we try to hack around it, to make the common cases work.
        // This is a HACK, remove once the symbian make generator supports
        // shadow building
        arguments << QLatin1String("-after")
                  << QLatin1String("OBJECTS_DIR=obj")
                  << QLatin1String("MOC_DIR=moc")
                  << QLatin1String("UI_DIR=ui")
                  << QLatin1String("RCC_DIR=rcc");
    }
    return arguments;
}

bool QMakeStep::init()
{
    Qt4BuildConfiguration *qt4bc = qt4BuildConfiguration();
    const QtSupport::BaseQtVersion *qtVersion = qt4bc->qtVersion();

    if (!qtVersion)
        return false;

    QString args = allArguments();
    QString workingDirectory;

    if (qt4bc->subNodeBuild())
        workingDirectory = qt4bc->subNodeBuild()->buildDir();
    else
        workingDirectory = qt4bc->buildDirectory();

    QString program = qtVersion->qmakeCommand();

    // Check whether we need to run qmake
    m_needToRunQMake = true;
    QString makefile = workingDirectory;

    if (qt4bc->subNodeBuild()) {
        if (!qt4bc->subNodeBuild()->makefile().isEmpty()) {
            makefile.append(qt4bc->subNodeBuild()->makefile());
        } else {
            makefile.append("/Makefile");
        }
    } else if (!qt4bc->makefile().isEmpty()) {
        makefile.append(qt4bc->makefile());
    } else {
        makefile.append("/Makefile");
    }

    if (QFileInfo(makefile).exists()) {
        QString qmakePath = QtSupport::QtVersionManager::findQMakeBinaryFromMakefile(makefile);
        if (qtVersion->qmakeCommand() == qmakePath) {
            m_needToRunQMake = !qt4bc->compareToImportFrom(makefile);
        }
    }

    if (m_forced) {
        m_forced = false;
        m_needToRunQMake = true;
    }

    setEnabled(m_needToRunQMake);
    ProcessParameters *pp = processParameters();
    pp->setMacroExpander(qt4bc->macroExpander());
    pp->setWorkingDirectory(workingDirectory);
    pp->setCommand(program);
    pp->setArguments(args);
    pp->setEnvironment(qt4bc->environment());

    setOutputParser(new QMakeParser);

    Qt4ProFileNode *node = qt4bc->qt4Target()->qt4Project()->rootProjectNode();
    if (qt4bc->subNodeBuild())
        node = qt4bc->subNodeBuild();
    QString proFile = node->path();

    QtSupport::BaseQtVersion *version = qt4BuildConfiguration()->qtVersion();
    m_tasks = version->reportIssues(proFile, workingDirectory);

    foreach (Qt4BaseTargetFactory *factory, Qt4BaseTargetFactory::qt4BaseTargetFactoriesForIds(version->supportedTargetIds().toList()))
        m_tasks.append(factory->reportIssues(proFile));
    qSort(m_tasks);

    m_scriptTemplate = node->projectType() == ScriptTemplate;

    return AbstractProcessStep::init();
}

void QMakeStep::run(QFutureInterface<bool> &fi)
{
    if (m_scriptTemplate) {
        fi.reportResult(true);
        return;
    }

    // Warn on common error conditions:
    bool canContinue = true;
    foreach (const ProjectExplorer::Task &t, m_tasks) {
        addTask(t);
        if (t.type == Task::Error)
            canContinue = false;
    }
    if (!canContinue) {
        emit addOutput(tr("Configuration is faulty, please check the Build Issues view for details."), BuildStep::MessageOutput);
        fi.reportResult(false);
        return;
    }

    if (!m_needToRunQMake) {
        emit addOutput(tr("Configuration unchanged, skipping qmake step."), BuildStep::MessageOutput);
        fi.reportResult(true);
        return;
    }

    AbstractProcessStep::run(fi);
}

void QMakeStep::setForced(bool b)
{
    m_forced = b;
}

bool QMakeStep::forced()
{
    return m_forced;
}

ProjectExplorer::BuildStepConfigWidget *QMakeStep::createConfigWidget()
{
    return new QMakeStepConfigWidget(this);
}

bool QMakeStep::immutable() const
{
    return false;
}

void QMakeStep::processStartupFailed()
{
    m_forced = true;
    AbstractProcessStep::processStartupFailed();
}

bool QMakeStep::processSucceeded(int exitCode, QProcess::ExitStatus status)
{
    bool result = AbstractProcessStep::processSucceeded(exitCode, status);
    if (!result)
        m_forced = true;
    qt4BuildConfiguration()->emitBuildDirectoryInitialized();
    return result;
}

void QMakeStep::setUserArguments(const QString &arguments)
{
    if (m_userArgs == arguments)
        return;
    m_userArgs = arguments;

    emit userArgumentsChanged();

    qt4BuildConfiguration()->emitQMakeBuildConfigurationChanged();
    qt4BuildConfiguration()->emitProFileEvaluteNeeded();
}

bool QMakeStep::isQmlDebuggingLibrarySupported(QString *reason) const
{
    QtSupport::BaseQtVersion *version = qt4BuildConfiguration()->qtVersion();
    if (!version) {
        if (reason)
            *reason = tr("No Qt version.");
        return false;
    }

    if (!version->needsQmlDebuggingLibrary() || version->hasQmlDebuggingLibrary())
        return true;

    if (!version->qtAbis().isEmpty()) {
        ProjectExplorer::Abi abi = qt4BuildConfiguration()->qtVersion()->qtAbis().first();
        if (abi.osFlavor() == ProjectExplorer::Abi::MaemoLinuxFlavor) {
            if (reason)
                reason->clear();
//               *reason = tr("Qml debugging on device not yet supported.");
            return false;
        }
    }

    if (!version->isValid()) {
        if (reason)
            *reason = tr("Invalid Qt version.");
        return false;
    }

    if (version->qtVersion() < QtSupport::QtVersionNumber(4, 7, 1)) {
        if (reason)
            *reason = tr("Requires Qt 4.7.1 or newer.");
        return false;
    }

    if (reason)
        *reason = tr("Library not available. <a href='compile'>Compile...</a>");

    return false;
}

bool QMakeStep::linkQmlDebuggingLibrary() const
{
    if (m_linkQmlDebuggingLibrary == DoLink)
        return true;
    if (m_linkQmlDebuggingLibrary == DoNotLink)
        return false;
    return (qt4BuildConfiguration()->buildType() & BuildConfiguration::Debug);
}

void QMakeStep::setLinkQmlDebuggingLibrary(bool enable)
{
    if ((enable && (m_linkQmlDebuggingLibrary == DoLink))
            || (!enable && (m_linkQmlDebuggingLibrary == DoNotLink)))
        return;
    m_linkQmlDebuggingLibrary = enable ? DoLink : DoNotLink;

    emit linkQmlDebuggingLibraryChanged();

    qt4BuildConfiguration()->emitQMakeBuildConfigurationChanged();
    qt4BuildConfiguration()->emitProFileEvaluteNeeded();
}

QStringList QMakeStep::parserArguments()
{
    QStringList result;
    for (Utils::QtcProcess::ConstArgIterator ait(allArguments()); ait.next(); )
        if (ait.isSimple())
            result << ait.value();
    return result;
}

QString QMakeStep::userArguments()
{
    return m_userArgs;
}

QVariantMap QMakeStep::toMap() const
{
    QVariantMap map(AbstractProcessStep::toMap());
    map.insert(QLatin1String(QMAKE_ARGUMENTS_KEY), m_userArgs);
    map.insert(QLatin1String(QMAKE_QMLDEBUGLIBAUTO_KEY), m_linkQmlDebuggingLibrary == DebugLink);
    map.insert(QLatin1String(QMAKE_QMLDEBUGLIB_KEY), m_linkQmlDebuggingLibrary == DoLink);
    map.insert(QLatin1String(QMAKE_FORCED_KEY), m_forced);
    return map;
}

bool QMakeStep::fromMap(const QVariantMap &map)
{
    m_userArgs = map.value(QLatin1String(QMAKE_ARGUMENTS_KEY)).toString();
    m_forced = map.value(QLatin1String(QMAKE_FORCED_KEY), false).toBool();
    if (map.value(QLatin1String(QMAKE_QMLDEBUGLIBAUTO_KEY), false).toBool()) {
        m_linkQmlDebuggingLibrary = DebugLink;
    } else {
        if (map.value(QLatin1String(QMAKE_QMLDEBUGLIB_KEY), false).toBool()) {
            m_linkQmlDebuggingLibrary = DoLink;
        } else {
            m_linkQmlDebuggingLibrary = DoNotLink;
        }
    }

    return BuildStep::fromMap(map);
}

////
// QMakeStepConfigWidget
////

QMakeStepConfigWidget::QMakeStepConfigWidget(QMakeStep *step)
    : BuildStepConfigWidget(), m_ui(new Ui::QMakeStep), m_step(step),
      m_ignoreChange(false)
{
    m_ui->setupUi(this);
    connect(m_ui->qmakeAdditonalArgumentsLineEdit, SIGNAL(textEdited(const QString&)),
            this, SLOT(qmakeArgumentsLineEdited()));
    connect(m_ui->buildConfigurationComboBox, SIGNAL(currentIndexChanged(int)),
            this, SLOT(buildConfigurationSelected()));
    connect(m_ui->qmlDebuggingLibraryCheckBox, SIGNAL(toggled(bool)),
            this, SLOT(linkQmlDebuggingLibraryChecked(bool)));
    connect(m_ui->qmlDebuggingWarningText, SIGNAL(linkActivated(QString)),
            this, SLOT(buildQmlDebuggingHelper()));
    connect(step, SIGNAL(userArgumentsChanged()),
            this, SLOT(userArgumentsChanged()));
    connect(step, SIGNAL(linkQmlDebuggingLibraryChanged()),
            this, SLOT(linkQmlDebuggingLibraryChanged()));
    connect(step->qt4BuildConfiguration(), SIGNAL(qtVersionChanged()),
            this, SLOT(qtVersionChanged()));
    connect(step->qt4BuildConfiguration(), SIGNAL(toolChainChanged()),
            this, SLOT(qtVersionChanged()));
    connect(step->qt4BuildConfiguration(), SIGNAL(qmakeBuildConfigurationChanged()),
            this, SLOT(qmakeBuildConfigChanged()));
    connect(QtSupport::QtVersionManager::instance(), SIGNAL(dumpUpdatedFor(QString)),
            this, SLOT(qtVersionsDumpUpdated(QString)));
}

QMakeStepConfigWidget::~QMakeStepConfigWidget()
{
    delete m_ui;
}

void QMakeStepConfigWidget::init()
{
    m_ui->qmakeAdditonalArgumentsLineEdit->setText(m_step->userArguments());
    m_ui->qmlDebuggingLibraryCheckBox->setChecked(m_step->linkQmlDebuggingLibrary());

    qmakeBuildConfigChanged();

    updateSummaryLabel();
    updateEffectiveQMakeCall();
    updateQmlDebuggingOption();
}

QString QMakeStepConfigWidget::summaryText() const
{
    return m_summaryText;
}

QString QMakeStepConfigWidget::displayName() const
{
    return m_step->displayName();
}

void QMakeStepConfigWidget::qtVersionChanged()
{
    updateSummaryLabel();
    updateEffectiveQMakeCall();
    updateQmlDebuggingOption();
}

void QMakeStepConfigWidget::qtVersionsDumpUpdated(const QString &qmakeCommand)
{
    QtSupport::BaseQtVersion *version = m_step->qt4BuildConfiguration()->qtVersion();
    if (version && version->qmakeCommand() == qmakeCommand)
        qtVersionChanged();
}

void QMakeStepConfigWidget::qmakeBuildConfigChanged()
{
    Qt4BuildConfiguration *bc = m_step->qt4BuildConfiguration();
    bool debug = bc->qmakeBuildConfiguration() & QtSupport::BaseQtVersion::DebugBuild;
    m_ignoreChange = true;
    m_ui->buildConfigurationComboBox->setCurrentIndex(debug? 0 : 1);
    m_ignoreChange = false;
    updateSummaryLabel();
    updateEffectiveQMakeCall();
}

void QMakeStepConfigWidget::userArgumentsChanged()
{
    if (m_ignoreChange)
        return;
    m_ui->qmakeAdditonalArgumentsLineEdit->setText(m_step->userArguments());
    updateSummaryLabel();
    updateEffectiveQMakeCall();
}

void QMakeStepConfigWidget::linkQmlDebuggingLibraryChanged()
{
    if (m_ignoreChange)
        return;
    m_ui->qmlDebuggingLibraryCheckBox->setChecked(m_step->linkQmlDebuggingLibrary());

    updateSummaryLabel();
    updateEffectiveQMakeCall();
    updateQmlDebuggingOption();
}

void QMakeStepConfigWidget::qmakeArgumentsLineEdited()
{
    m_ignoreChange = true;
    m_step->setUserArguments(m_ui->qmakeAdditonalArgumentsLineEdit->text());
    m_ignoreChange = false;

    updateSummaryLabel();
    updateEffectiveQMakeCall();
}

void QMakeStepConfigWidget::buildConfigurationSelected()
{
    if (m_ignoreChange)
        return;
    Qt4BuildConfiguration *bc = m_step->qt4BuildConfiguration();
    QtSupport::BaseQtVersion::QmakeBuildConfigs buildConfiguration = bc->qmakeBuildConfiguration();
    if (m_ui->buildConfigurationComboBox->currentIndex() == 0) { // debug
        buildConfiguration = buildConfiguration | QtSupport::BaseQtVersion::DebugBuild;
    } else {
        buildConfiguration = buildConfiguration & ~QtSupport::BaseQtVersion::DebugBuild;
    }
    m_ignoreChange = true;
    bc->setQMakeBuildConfiguration(buildConfiguration);
    m_ignoreChange = false;

    updateSummaryLabel();
    updateEffectiveQMakeCall();
}

void QMakeStepConfigWidget::linkQmlDebuggingLibraryChecked(bool checked)
{
    if (m_ignoreChange)
        return;

    m_ignoreChange = true;
    m_step->setLinkQmlDebuggingLibrary(checked);
    m_ignoreChange = false;

    updateSummaryLabel();
    updateEffectiveQMakeCall();
    updateQmlDebuggingOption();
}

void QMakeStepConfigWidget::buildQmlDebuggingHelper()
{
    QtSupport::BaseQtVersion *version = m_step->qt4BuildConfiguration()->qtVersion();
    if (!version)
        return;
    QtSupport::DebuggingHelperBuildTask *buildTask =
            new QtSupport::DebuggingHelperBuildTask(version, QtSupport::DebuggingHelperBuildTask::QmlDebugging);

    // pop up Application Output on error
    buildTask->showOutputOnError(true);

    QFuture<void> task = QtConcurrent::run(&QtSupport::DebuggingHelperBuildTask::run, buildTask);
    const QString taskName = tr("Building helpers");
    Core::ICore::instance()->progressManager()->addTask(task, taskName,
                                                        QLatin1String("Qt4ProjectManager::BuildHelpers"));
}

void QMakeStepConfigWidget::updateSummaryLabel()
{
    Qt4BuildConfiguration *qt4bc = m_step->qt4BuildConfiguration();
    QtSupport::BaseQtVersion *qtVersion = qt4bc->qtVersion();
    if (!qtVersion) {
        m_summaryText = tr("<b>qmake:</b> No Qt version set. Cannot run qmake.");
        emit updateSummary();
        return;
    }

    // We don't want the full path to the .pro file
    QString args = m_step->allArguments(true);
    // And we only use the .pro filename not the full path
    QString program = QFileInfo(qtVersion->qmakeCommand()).fileName();
    m_summaryText = tr("<b>qmake:</b> %1 %2").arg(program, args);
    emit updateSummary();

}

void QMakeStepConfigWidget::updateQmlDebuggingOption()
{
    m_ui->qmlDebuggingLibraryCheckBox->setEnabled(m_step->isQmlDebuggingLibrarySupported());

    QtSupport::BaseQtVersion *qtVersion = m_step->qt4BuildConfiguration()->qtVersion();
    if (!qtVersion || !qtVersion->needsQmlDebuggingLibrary())
        m_ui->debuggingLibraryLabel->setText(tr("Enable QML debugging:"));
    else
        m_ui->debuggingLibraryLabel->setText(tr("Link QML debugging library:"));

    QString warningText;

    if (!m_step->isQmlDebuggingLibrarySupported(&warningText))
        ;
    else if (m_step->linkQmlDebuggingLibrary())
        warningText = tr("Might make your application vulnerable. Only use in a safe environment!");

    m_ui->qmlDebuggingWarningText->setText(warningText);
    m_ui->qmlDebuggingWarningIcon->setVisible(!warningText.isEmpty());
}

void QMakeStepConfigWidget::updateEffectiveQMakeCall()
{
    Qt4BuildConfiguration *qt4bc = m_step->qt4BuildConfiguration();
    QtSupport::BaseQtVersion *qtVersion = qt4bc->qtVersion();
    QString program = tr("<No qtversion>");
    if (qtVersion)
        program = QFileInfo(qtVersion->qmakeCommand()).fileName();
    m_ui->qmakeArgumentsEdit->setPlainText(program + QLatin1Char(' ') + m_step->allArguments());
}

////
// QMakeStepFactory
////

QMakeStepFactory::QMakeStepFactory(QObject *parent) :
    ProjectExplorer::IBuildStepFactory(parent)
{
}

QMakeStepFactory::~QMakeStepFactory()
{
}

bool QMakeStepFactory::canCreate(BuildStepList *parent, const QString &id) const
{
    if (parent->id() != QLatin1String(ProjectExplorer::Constants::BUILDSTEPS_BUILD))
        return false;
    if (!qobject_cast<Qt4BuildConfiguration *>(parent->parent()))
        return false;
    return (id == QLatin1String(QMAKE_BS_ID));
}

ProjectExplorer::BuildStep *QMakeStepFactory::create(BuildStepList *parent, const QString &id)
{
    if (!canCreate(parent, id))
        return 0;
    return new QMakeStep(parent);
}

bool QMakeStepFactory::canClone(BuildStepList *parent, BuildStep *source) const
{
    return canCreate(parent, source->id());
}

ProjectExplorer::BuildStep *QMakeStepFactory::clone(BuildStepList *parent, ProjectExplorer::BuildStep *source)
{
    if (!canClone(parent, source))
        return 0;
    return new QMakeStep(parent, qobject_cast<QMakeStep *>(source));
}

bool QMakeStepFactory::canRestore(BuildStepList *parent, const QVariantMap &map) const
{
    QString id(ProjectExplorer::idFromMap(map));
    return canCreate(parent, id);
}

ProjectExplorer::BuildStep *QMakeStepFactory::restore(BuildStepList *parent, const QVariantMap &map)
{
    if (!canRestore(parent, map))
        return 0;
    QMakeStep *bs = new QMakeStep(parent);
    if (bs->fromMap(map))
        return bs;
    delete bs;
    return 0;
}

QStringList QMakeStepFactory::availableCreationIds(ProjectExplorer::BuildStepList *parent) const
{
    if (parent->id() == QLatin1String(ProjectExplorer::Constants::BUILDSTEPS_BUILD))
        if (Qt4BuildConfiguration *bc = qobject_cast<Qt4BuildConfiguration *>(parent->parent()))
            if (!bc->qmakeStep())
                return QStringList() << QLatin1String(QMAKE_BS_ID);
    return QStringList();
}

QString QMakeStepFactory::displayNameForId(const QString &id) const
{
    if (id == QLatin1String(QMAKE_BS_ID))
        return tr("qmake");
    return QString();
}