/**************************************************************************
**
** This file is part of Qt Creator
**
** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
**
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** No Commercial Usage
**
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
**
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**************************************************************************/

#include "qt4project.h"

#include "profilereader.h"
#include "qt4projectmanager.h"
#include "makestep.h"
#include "qmakestep.h"
#include "qt4nodes.h"
#include "qt4projectconfigwidget.h"
#include "qt4projectmanagerconstants.h"
#include "projectloadwizard.h"
#include "qt4buildconfiguration.h"
#include "findqt4profiles.h"
#include "qmldumptool.h"

#include <coreplugin/icore.h>
#include <coreplugin/messagemanager.h>
#include <coreplugin/coreconstants.h>
#include <coreplugin/progressmanager/progressmanager.h>
#include <extensionsystem/pluginmanager.h>
#include <cplusplus/ModelManagerInterface.h>
#include <qmljs/qmljsmodelmanagerinterface.h>
#include <projectexplorer/toolchain.h>
#include <projectexplorer/headerpath.h>
#include <projectexplorer/buildenvironmentwidget.h>
#include <projectexplorer/customexecutablerunconfiguration.h>
#include <projectexplorer/projectexplorer.h>
#include <utils/qtcassert.h>

#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtGui/QFileDialog>
#include <QtGui/QInputDialog>

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

enum { debug = 0 };

namespace Qt4ProjectManager {
namespace Internal {

// Qt4ProjectFiles: Struct for (Cached) lists of files in a project
struct Qt4ProjectFiles {
    void clear();
    bool equals(const Qt4ProjectFiles &f) const;

    QStringList files[ProjectExplorer::FileTypeSize];
    QStringList generatedFiles[ProjectExplorer::FileTypeSize];
    QStringList proFiles;
};

void Qt4ProjectFiles::clear()
{
    for (int i = 0; i < FileTypeSize; ++i) {
        files[i].clear();
        generatedFiles[i].clear();
    }
    proFiles.clear();
}

bool Qt4ProjectFiles::equals(const Qt4ProjectFiles &f) const
{
    for (int i = 0; i < FileTypeSize; ++i)
        if (files[i] != f.files[i] || generatedFiles[i] != f.generatedFiles[i])
            return false;
    if (proFiles != f.proFiles)
        return false;
    return true;
}

inline bool operator==(const Qt4ProjectFiles &f1, const Qt4ProjectFiles &f2)
{       return f1.equals(f2); }

inline bool operator!=(const Qt4ProjectFiles &f1, const Qt4ProjectFiles &f2)
{       return !f1.equals(f2); }

QDebug operator<<(QDebug d, const  Qt4ProjectFiles &f)
{
    QDebug nsp = d.nospace();
    nsp << "Qt4ProjectFiles: proFiles=" <<  f.proFiles << '\n';
    for (int i = 0; i < FileTypeSize; ++i)
        nsp << "Type " << i << " files=" << f.files[i] <<  " generated=" << f.generatedFiles[i] << '\n';
    return d;
}

// A visitor to collect all files of a project in a Qt4ProjectFiles struct
class ProjectFilesVisitor : public ProjectExplorer::NodesVisitor
{
    Q_DISABLE_COPY(ProjectFilesVisitor)
    ProjectFilesVisitor(Qt4ProjectFiles *files);
public:

    static void findProjectFiles(Qt4ProFileNode *rootNode, Qt4ProjectFiles *files);

    void visitProjectNode(ProjectNode *projectNode);
    void visitFolderNode(FolderNode *folderNode);

private:
    Qt4ProjectFiles *m_files;
};

ProjectFilesVisitor::ProjectFilesVisitor(Qt4ProjectFiles *files) :
    m_files(files)
{
}

void ProjectFilesVisitor::findProjectFiles(Qt4ProFileNode *rootNode, Qt4ProjectFiles *files)
{
    files->clear();
    ProjectFilesVisitor visitor(files);
    rootNode->accept(&visitor);
    for (int i = 0; i < FileTypeSize; ++i) {
        qSort(files->files[i]);
        qSort(files->generatedFiles[i]);
    }
    qSort(files->proFiles);
}

void ProjectFilesVisitor::visitProjectNode(ProjectNode *projectNode)
{
    const QString path = projectNode->path();
    if (!m_files->proFiles.contains(path))
        m_files->proFiles.append(path);
    visitFolderNode(projectNode);
}

void ProjectFilesVisitor::visitFolderNode(FolderNode *folderNode)
{
    foreach (FileNode *fileNode, folderNode->fileNodes()) {
        const QString path = fileNode->path();
        const int type = fileNode->fileType();
        QStringList &targetList = fileNode->isGenerated() ? m_files->generatedFiles[type] : m_files->files[type];
        if (!targetList.contains(path))
            targetList.push_back(path);
    }
}

}
}

// ----------- Qt4ProjectFile
Qt4ProjectFile::Qt4ProjectFile(Qt4Project *project, const QString &filePath, QObject *parent)
    : Core::IFile(parent),
      m_mimeType(QLatin1String(Qt4ProjectManager::Constants::PROFILE_MIMETYPE)),
      m_project(project),
      m_filePath(filePath)
{
}

bool Qt4ProjectFile::save(const QString &)
{
    // This is never used
    return false;
}

void Qt4ProjectFile::rename(const QString &newName)
{
    // Can't happen
    Q_UNUSED(newName);
    Q_ASSERT(false);
}

QString Qt4ProjectFile::fileName() const
{
    return m_filePath;
}

QString Qt4ProjectFile::defaultPath() const
{
    return QString();
}

QString Qt4ProjectFile::suggestedFileName() const
{
    return QString();
}

QString Qt4ProjectFile::mimeType() const
{
    return m_mimeType;
}

bool Qt4ProjectFile::isModified() const
{
    return false; // we save after changing anyway
}

bool Qt4ProjectFile::isReadOnly() const
{
    QFileInfo fi(m_filePath);
    return !fi.isWritable();
}

bool Qt4ProjectFile::isSaveAsAllowed() const
{
    return false;
}

Core::IFile::ReloadBehavior Qt4ProjectFile::reloadBehavior(ChangeTrigger state, ChangeType type) const
{
    Q_UNUSED(state)
    Q_UNUSED(type)
    return BehaviorSilent;
}

void Qt4ProjectFile::reload(ReloadFlag flag, ChangeType type)
{
    Q_UNUSED(flag)
    Q_UNUSED(type)
}

/*!
  \class Qt4Project

  Qt4Project manages information about an individual Qt 4 (.pro) project file.
  */

Qt4Project::Qt4Project(Qt4Manager *manager, const QString& fileName) :
    m_manager(manager),
    m_rootProjectNode(0),
    m_nodesWatcher(new Internal::Qt4NodesWatcher(this)),
    m_fileInfo(new Qt4ProjectFile(this, fileName, this)),
    m_projectFiles(new Qt4ProjectFiles),
    m_proFileOption(0),
    m_asyncUpdateFutureInterface(0),
    m_pendingEvaluateFuturesCount(0),
    m_asyncUpdateState(NoState),
    m_cancelEvaluate(false)
{
    m_asyncUpdateTimer.setSingleShot(true);
    m_asyncUpdateTimer.setInterval(3000);
    connect(&m_asyncUpdateTimer, SIGNAL(timeout()), this, SLOT(asyncUpdate()));
}

Qt4Project::~Qt4Project()
{
    m_codeModelFuture.cancel();
    m_asyncUpdateState = ShuttingDown;
    m_manager->unregisterProject(this);
    delete m_projectFiles;
    m_cancelEvaluate = true;
    delete m_rootProjectNode;
}

void Qt4Project::updateFileList()
{
    Qt4ProjectFiles newFiles;
    ProjectFilesVisitor::findProjectFiles(m_rootProjectNode, &newFiles);
    if (newFiles != *m_projectFiles) {
        *m_projectFiles = newFiles;
        emit fileListChanged();
        if (debug)
            qDebug() << Q_FUNC_INFO << *m_projectFiles;
    }
}

bool Qt4Project::fromMap(const QVariantMap &map)
{
    if (!Project::fromMap(map))
        return false;

    // Prune targets without buildconfigurations:
    // This can happen esp. when updating from a old version of Qt Creator
    QList<Target *>ts = targets();
    foreach (Target *t, ts) {
        if (t->buildConfigurations().isEmpty()) {
            qWarning() << "Removing" << t->id() << "since it has no buildconfigurations!";
            removeTarget(t);
        }
    }

    // Add buildconfigurations so we can parse the pro-files.
    if (targets().isEmpty())
        addDefaultBuild();

    if (targets().isEmpty()) {
        qWarning() << "Unable to create targets!";
        return false;
    }

    Q_ASSERT(activeTarget());
    Q_ASSERT(activeTarget()->activeBuildConfiguration());

    m_manager->registerProject(this);

    m_rootProjectNode = new Qt4ProFileNode(this, m_fileInfo->fileName(), this);
    m_rootProjectNode->registerWatcher(m_nodesWatcher);

    update();
    updateFileList();
    // This might be incorrect, need a full update
    updateCodeModels();

    foreach (Target *t, targets())
        static_cast<Qt4BaseTarget *>(t)->createApplicationProFiles();

    foreach (Target *t, targets())
        onAddedTarget(t);

    connect(m_nodesWatcher, SIGNAL(proFileUpdated(Qt4ProjectManager::Internal::Qt4ProFileNode*,bool)),
            this, SIGNAL(proFileUpdated(Qt4ProjectManager::Internal::Qt4ProFileNode *,bool)));

    connect(m_nodesWatcher, SIGNAL(proFileInvalidated(Qt4ProjectManager::Internal::Qt4ProFileNode*)),
            this, SIGNAL(proFileInvalidated(Qt4ProjectManager::Internal::Qt4ProFileNode*)));

    // Now we emit update once :)
    m_rootProjectNode->emitProFileUpdated();


    // Setup Qt versions supported (== possible targets).
    connect(this, SIGNAL(addedTarget(ProjectExplorer::Target*)),
            this, SLOT(onAddedTarget(ProjectExplorer::Target*)));

    connect(this, SIGNAL(activeTargetChanged(ProjectExplorer::Target*)),
            this, SLOT(activeTargetWasChanged()));

    return true;
}

Qt4BaseTarget *Qt4Project::activeTarget() const
{
    return static_cast<Qt4BaseTarget *>(Project::activeTarget());
}

void Qt4Project::onAddedTarget(ProjectExplorer::Target *t)
{
    Q_ASSERT(t);
    Qt4BaseTarget *qt4target = qobject_cast<Qt4BaseTarget *>(t);
    Q_ASSERT(qt4target);
    connect(qt4target, SIGNAL(buildDirectoryInitialized()),
            this, SIGNAL(buildDirectoryInitialized()));
    connect(qt4target, SIGNAL(proFileEvaluateNeeded(Qt4ProjectManager::Qt4BaseTarget*)),
            this, SLOT(proFileEvaluateNeeded(Qt4ProjectManager::Qt4BaseTarget*)));
}

void Qt4Project::proFileEvaluateNeeded(Qt4ProjectManager::Qt4BaseTarget *target)
{
    if (activeTarget() == target)
        scheduleAsyncUpdate();
}

/// equalFileList compares two file lists ignoring
/// <configuration> without generating temporary lists

bool Qt4Project::equalFileList(const QStringList &a, const QStringList &b)
{
    if (abs(a.length() - b.length()) > 1)
        return false;
    QStringList::const_iterator ait = a.constBegin();
    QStringList::const_iterator bit = b.constBegin();
    QStringList::const_iterator aend = a.constEnd();
    QStringList::const_iterator bend = b.constEnd();

    while (ait != aend && bit != bend) {
        if (*ait == QLatin1String("<configuration>"))
            ++ait;
        else if (*bit == QLatin1String("<configuration>"))
            ++bit;
        else if (*ait == *bit)
            ++ait, ++bit;
        else
           return false;
    }
    return (ait == aend && bit == bend);
}

void Qt4Project::updateCodeModels()
{
    if (debug)
        qDebug()<<"Qt4Project::updateCodeModel()";

    if (!activeTarget() || !activeTarget()->activeBuildConfiguration())
        return;

    updateCppCodeModel();
    updateQmlJSCodeModel();
}

void Qt4Project::updateCppCodeModel()
{
    Qt4BuildConfiguration *activeBC = activeTarget()->activeBuildConfiguration();

    CPlusPlus::CppModelManagerInterface *modelmanager =
        CPlusPlus::CppModelManagerInterface::instance();

    if (!modelmanager)
        return;

    // Collect global headers/defines
    QStringList predefinedIncludePaths;
    QStringList predefinedFrameworkPaths;
    QByteArray predefinedMacros;

    QString qtFrameworkPath = activeBC->qtVersion()->frameworkInstallPath();
    if (!qtFrameworkPath.isEmpty())
        predefinedFrameworkPaths.append(qtFrameworkPath);

    ToolChain *tc = activeBC->toolChain();
    if (tc) {
        predefinedMacros = tc->predefinedMacros();

        QList<HeaderPath> headers = tc->systemHeaderPaths();
        headers.append(activeBC->qtVersion()->systemHeaderPathes());
        foreach (const HeaderPath &headerPath, headers) {
            if (headerPath.kind() == HeaderPath::FrameworkHeaderPath)
                predefinedFrameworkPaths.append(headerPath.path());
            else
                predefinedIncludePaths.append(headerPath.path());
        }
    }

    FindQt4ProFiles findQt4ProFiles;
    QList<Qt4ProFileNode *> proFiles = findQt4ProFiles(rootProjectNode());
    QByteArray allDefinedMacros = predefinedMacros;
    QStringList allIncludePaths;
    QStringList allFrameworkPaths = predefinedFrameworkPaths;
    QStringList allPrecompileHeaders;

    // Collect per .pro file information
    foreach (Qt4ProFileNode *pro, proFiles) {
        allPrecompileHeaders.append(pro->variableValue(PrecompiledHeaderVar));

        // Add custom defines

        foreach (const QString &def, pro->variableValue(DefinesVar)) {
            allDefinedMacros += "#define ";
            const int index = def.indexOf(QLatin1Char('='));
            if (index == -1) {
                allDefinedMacros += def.toLatin1();
                allDefinedMacros += " 1\n";
            } else {
                const QString name = def.left(index);
                const QString value = def.mid(index + 1);
                allDefinedMacros += name.toLatin1();
                allDefinedMacros += ' ';
                allDefinedMacros += value.toLocal8Bit();
                allDefinedMacros += '\n';
            }
        }

        const QStringList proIncludePaths = pro->variableValue(IncludePathVar);
        foreach (const QString &includePath, proIncludePaths) {
            if (!allIncludePaths.contains(includePath))
                allIncludePaths.append(includePath);
        }

#if 0 // Experimental PKGCONFIG support
        { // Pkg Config support
            QStringList pkgConfig = pro->variableValue(PkgConfigVar);
            if (!pkgConfig.isEmpty()) {
                pkgConfig.prepend("--cflags-only-I");
                QProcess process;
                process.start("pkg-config", pkgConfig);
                process.waitForFinished();
                QString result = process.readAllStandardOutput();
                foreach(const QString &part, result.trimmed().split(' ', QString::SkipEmptyParts)) {
                    info.includes.append(part.mid(2)); // Chop off "-I"
                }
            }
        }
#endif
    }

    // Add mkspec directory
    allIncludePaths.append(activeBC->qtVersion()->mkspecPath());

    allIncludePaths.append(predefinedIncludePaths);

    QStringList files;
    files += m_projectFiles->files[HeaderType];
    files += m_projectFiles->generatedFiles[HeaderType];
    files += m_projectFiles->files[SourceType];
    files += m_projectFiles->generatedFiles[SourceType];

    CPlusPlus::CppModelManagerInterface::ProjectInfo pinfo = modelmanager->projectInfo(this);

    //qDebug()<<"Using precompiled header"<<allPrecompileHeaders;

    bool fileList = equalFileList(pinfo.sourceFiles, files);

    if (pinfo.defines == allDefinedMacros
        && pinfo.includePaths == allIncludePaths
        && pinfo.frameworkPaths == allFrameworkPaths
        && fileList
        && pinfo.precompiledHeaders == allPrecompileHeaders) {
        // Nothing to update...
    } else {
        pinfo.sourceFiles.clear();
        if (pinfo.defines != allDefinedMacros
            || pinfo.includePaths != allIncludePaths
            || pinfo.frameworkPaths != allFrameworkPaths
            || pinfo.precompiledHeaders != allPrecompileHeaders)
        {
            pinfo.sourceFiles.append(QLatin1String("<configuration>"));
        }

        //pinfo.defines = predefinedMacros;
        pinfo.defines = allDefinedMacros;
        pinfo.includePaths = allIncludePaths;
        pinfo.frameworkPaths = allFrameworkPaths;
        pinfo.sourceFiles += files;
        pinfo.precompiledHeaders = allPrecompileHeaders;

        modelmanager->updateProjectInfo(pinfo);
        m_codeModelFuture = modelmanager->updateSourceFiles(pinfo.sourceFiles);
    }
}

void Qt4Project::updateQmlJSCodeModel()
{
    QmlJS::ModelManagerInterface *modelManager = QmlJS::ModelManagerInterface::instance();
    if (!modelManager)
        return;

    QmlJS::ModelManagerInterface::ProjectInfo projectInfo = modelManager->projectInfo(this);
    projectInfo.sourceFiles = m_projectFiles->files[QMLType];

    FindQt4ProFiles findQt4ProFiles;
    QList<Qt4ProFileNode *> proFiles = findQt4ProFiles(rootProjectNode());

    foreach (Qt4ProFileNode *node, proFiles) {
        projectInfo.importPaths.append(node->variableValue(QmlImportPathVar));
    }
    bool preferDebugDump = false;
    if (activeTarget() && activeTarget()->activeBuildConfiguration()) {
        preferDebugDump = activeTarget()->activeBuildConfiguration()->qmakeBuildConfiguration() & QtVersion::DebugBuild;
        const QtVersion *qtVersion = activeTarget()->activeBuildConfiguration()->qtVersion();
        if (qtVersion->isValid()) {
            const QString qtVersionImportPath = qtVersion->versionInfo().value("QT_INSTALL_IMPORTS");
            if (!qtVersionImportPath.isEmpty())
                projectInfo.importPaths += qtVersionImportPath;
        }
    }
    QmlDumpTool::pathAndEnvironment(this, preferDebugDump, &projectInfo.qmlDumpPath, &projectInfo.qmlDumpEnvironment);
    projectInfo.importPaths.removeDuplicates();

    modelManager->updateProjectInfo(projectInfo);
}

///*!
//  Updates complete project
//  */
void Qt4Project::update()
{
    if (debug)
        qDebug()<<"Doing sync update";
    m_rootProjectNode->update();

    if (debug)
        qDebug()<<"State is now Base";
    m_asyncUpdateState = Base;
    activeTarget()->activeBuildConfiguration()->setEnabled(true);
}

void Qt4Project::scheduleAsyncUpdate(Qt4ProFileNode *node)
{
    if (m_asyncUpdateState == ShuttingDown)
        return;

    if (debug)
        qDebug()<<"schduleAsyncUpdate (node)";
    Q_ASSERT(m_asyncUpdateState != NoState);

    if (m_cancelEvaluate) {
        if (debug)
            qDebug()<<"  Already canceling, nothing to do";
        // A cancel is in progress
        // That implies that a full update is going to happen afterwards
        // So we don't need to do anything
        return;
    }

    activeTarget()->activeBuildConfiguration()->setEnabled(false);

    if (m_asyncUpdateState == AsyncFullUpdatePending) {
        // Just postpone
        if (debug)
            qDebug()<<"  full update pending, restarting timer";
        m_asyncUpdateTimer.start();
    } else if (m_asyncUpdateState == AsyncPartialUpdatePending
               || m_asyncUpdateState == Base) {
        if (debug)
            qDebug()<<"  adding node to async update list, setting state to AsyncPartialUpdatePending";
        // Add the node
        m_asyncUpdateState = AsyncPartialUpdatePending;

        QList<Internal::Qt4ProFileNode *>::iterator it;
        bool add = true;
        if (debug)
            qDebug()<<"scheduleAsyncUpdate();"<<m_partialEvaluate.size()<<"nodes";
        it = m_partialEvaluate.begin();
        while (it != m_partialEvaluate.end()) {
            if (*it == node) {
                add = false;
                break;
            } else if (node->isParent(*it)) { // We already have the parent in the list, nothing to do
                add = false;
                break;
            } else if ((*it)->isParent(node)) { // The node is the parent of a child already in the list
                it = m_partialEvaluate.erase(it);
            } else {
                ++it;
            }
        }

        if (add)
            m_partialEvaluate.append(node);
        // and start the timer anew
        m_asyncUpdateTimer.start();
    } else if (m_asyncUpdateState == AsyncUpdateInProgress) {
        // A update is in progress
        // And this slot only gets called if a file changed on disc
        // So we'll play it safe and schedule a complete evaluate
        // This might trigger if due to version control a few files
        // change a partial update gets in progress and then another
        // batch of changes come in, which triggers a full update
        // even if that's not really needed
        if (debug)
            qDebug()<<"  Async update in progress, scheduling new one afterwards";
        scheduleAsyncUpdate();
    }
}

void Qt4Project::scheduleAsyncUpdate()
{
    if (debug)
        qDebug()<<"scheduleAsyncUpdate";
    if (m_asyncUpdateState == ShuttingDown)
        return;

    Q_ASSERT(m_asyncUpdateState != NoState);
    if (m_cancelEvaluate) { // we are in progress of canceling
                            // and will start the evaluation after that
        if (debug)
            qDebug()<<"  canceling is in progress, doing nothing";
        return;
    }
    if (m_asyncUpdateState == AsyncUpdateInProgress) {
        if (debug)
            qDebug()<<"  update in progress, canceling and setting state to full update pending";
        m_cancelEvaluate = true;
        m_asyncUpdateState = AsyncFullUpdatePending;
        activeTarget()->activeBuildConfiguration()->setEnabled(false);
        m_rootProjectNode->emitProFileInvalidated();
        return;
    }

    if (debug)
        qDebug()<<"  starting timer for full update, setting state to full update pending";
    m_partialEvaluate.clear();
    activeTarget()->activeBuildConfiguration()->setEnabled(false);
    m_rootProjectNode->emitProFileInvalidated();
    m_asyncUpdateState = AsyncFullUpdatePending;
    m_asyncUpdateTimer.start();

    // Cancel running code model update
    m_codeModelFuture.cancel();
}


void Qt4Project::incrementPendingEvaluateFutures()
{
    ++m_pendingEvaluateFuturesCount;
    if (debug)
        qDebug()<<"incrementPendingEvaluateFutures to"<<m_pendingEvaluateFuturesCount;

    m_asyncUpdateFutureInterface->setProgressRange(m_asyncUpdateFutureInterface->progressMinimum(),
                                                  m_asyncUpdateFutureInterface->progressMaximum() + 1);
}

void Qt4Project::decrementPendingEvaluateFutures()
{
    --m_pendingEvaluateFuturesCount;

    if (debug)
        qDebug()<<"decrementPendingEvaluateFutures to"<<m_pendingEvaluateFuturesCount;

    m_asyncUpdateFutureInterface->setProgressValue(m_asyncUpdateFutureInterface->progressValue() + 1);
    if (m_pendingEvaluateFuturesCount == 0) {
        if (debug)
            qDebug()<<"  WOHOO, no pending futures, cleaning up";
        // We are done!
        if (debug)
            qDebug()<<"  reporting finished";
        m_asyncUpdateFutureInterface->reportFinished();
        delete m_asyncUpdateFutureInterface;
        m_asyncUpdateFutureInterface = 0;
        m_cancelEvaluate = false;

        // TODO clear the profile cache ?
        if (m_asyncUpdateState == AsyncFullUpdatePending || m_asyncUpdateState == AsyncPartialUpdatePending) {
            if (debug)
                qDebug()<<"  Oh update is pending start the timer";
            m_asyncUpdateTimer.start();
        } else  if (m_asyncUpdateState != ShuttingDown){
            // After being done, we need to call:
            activeTarget()->activeBuildConfiguration()->setEnabled(true);
            foreach (Target *t, targets())
                static_cast<Qt4BaseTarget *>(t)->createApplicationProFiles();
            updateFileList();
            updateCodeModels();
            if (debug)
                qDebug()<<"  Setting state to Base";
            m_asyncUpdateState = Base;
        }
    }
}

bool Qt4Project::wasEvaluateCanceled()
{
    return m_cancelEvaluate;
}

QString Qt4Project::defaultTopLevelBuildDirectory() const
{
    return defaultTopLevelBuildDirectory(file()->fileName());
}

QString Qt4Project::defaultTopLevelBuildDirectory(const QString &profilePath)
{
    if (profilePath.isEmpty())
        return QString();
    QFileInfo info(profilePath);
    return QDir::cleanPath(projectDirectory(profilePath) + QLatin1String("/../") + info.baseName() + QLatin1String("-build"));
}

void Qt4Project::asyncUpdate()
{
    if (debug)
        qDebug()<<"async update, timer expired, doing now";
    Q_ASSERT(!m_asyncUpdateFutureInterface);
    m_asyncUpdateFutureInterface = new QFutureInterface<void>();

    Core::ProgressManager *progressManager = Core::ICore::instance()->progressManager();

    m_asyncUpdateFutureInterface->setProgressRange(0, 0);
    progressManager->addTask(m_asyncUpdateFutureInterface->future(), tr("Evaluating"), Constants::PROFILE_EVALUATE);
    if (debug)
        qDebug()<<"  adding task";

    m_asyncUpdateFutureInterface->reportStarted();

    if (m_asyncUpdateState == AsyncFullUpdatePending) {
        if (debug)
            qDebug()<<"  full update, starting with root node";
        m_rootProjectNode->asyncUpdate();
    } else {
        if (debug)
            qDebug()<<"  partial update,"<<m_partialEvaluate.size()<<"nodes to update";
        foreach(Qt4ProFileNode *node, m_partialEvaluate)
            node->asyncUpdate();
    }

    m_partialEvaluate.clear();
    if (debug)
        qDebug()<<"  Setting state to AsyncUpdateInProgress";
    m_asyncUpdateState = AsyncUpdateInProgress;
}

ProjectExplorer::IProjectManager *Qt4Project::projectManager() const
{
    return m_manager;
}

Qt4Manager *Qt4Project::qt4ProjectManager() const
{
    return m_manager;
}

QString Qt4Project::displayName() const
{
    return QFileInfo(file()->fileName()).completeBaseName();
}

QString Qt4Project::id() const
{
    return QLatin1String(Constants::QT4PROJECT_ID);
}

Core::IFile *Qt4Project::file() const
{
    return m_fileInfo;
}

QStringList Qt4Project::files(FilesMode fileMode) const
{
    QStringList files;
    for (int i = 0; i < FileTypeSize; ++i) {
        files += m_projectFiles->files[i];
        if (fileMode == AllFiles)
            files += m_projectFiles->generatedFiles[i];
    }
    return files;
}

// Find the folder that contains a file a certain type (recurse down)
static FolderNode *folderOf(FolderNode *in, FileType fileType, const QString &fileName)
{
    foreach(FileNode *fn, in->fileNodes())
        if (fn->fileType() == fileType && fn->path() == fileName)
            return in;
    foreach(FolderNode *folder, in->subFolderNodes())
        if (FolderNode *pn = folderOf(folder, fileType, fileName))
            return pn;
    return 0;
}

// Find the Qt4ProFileNode that contains a file of a certain type.
// First recurse down to folder, then find the pro-file.
static Qt4ProFileNode *proFileNodeOf(Qt4ProFileNode *in, FileType fileType, const QString &fileName)
{
    for (FolderNode *folder =  folderOf(in, fileType, fileName); folder; folder = folder->parentFolderNode())
        if (Qt4ProFileNode *proFile = qobject_cast<Qt4ProFileNode *>(folder))
            return proFile;
    return 0;
}

QString Qt4Project::generatedUiHeader(const QString &formFile) const
{
    // Look in sub-profiles as SessionManager::projectForFile returns
    // the top-level project only.
    if (m_rootProjectNode)
        if (const Qt4ProFileNode *pro = proFileNodeOf(m_rootProjectNode, FormType, formFile))
            return Qt4ProFileNode::uiHeaderFile(pro->uiDirectory(), formFile);
    return QString();
}

QList<ProjectExplorer::Project*> Qt4Project::dependsOn()
{
    // NBS implement dependsOn
    return QList<Project *>();
}

void Qt4Project::addDefaultBuild()
{
    // TODO this could probably refactored
    // That is the ProjectLoadWizard divided into useful bits
    // and this code then called here, instead of that strange forwarding
    // to a wizard, which doesn't even show up
    ProjectLoadWizard wizard(this);
    wizard.execDialog();
}

void Qt4Project::proFileParseError(const QString &errorMessage)
{
    Core::ICore::instance()->messageManager()->printToOutputPane(errorMessage);
}

ProFileReader *Qt4Project::createProFileReader(Qt4ProFileNode *qt4ProFileNode)
{
    if (!m_proFileOption) {
        m_proFileOption = new ProFileOption;
        m_proFileOptionRefCnt = 0;

        if (activeTarget() &&
            activeTarget()->activeBuildConfiguration()) {
            QtVersion *version = activeTarget()->activeBuildConfiguration()->qtVersion();
            if (version->isValid()) {
                m_proFileOption->properties = version->versionInfo();
                if (activeTarget()
                        && activeTarget()->activeBuildConfiguration()
                        && activeTarget()->activeBuildConfiguration()->toolChain())
                    m_proFileOption->sysroot
                            = activeTarget()->activeBuildConfiguration()->qtVersion()->systemRoot();
            }
        }

        ProFileCacheManager::instance()->incRefCount();
    }
    ++m_proFileOptionRefCnt;

    ProFileReader *reader = new ProFileReader(m_proFileOption);

    reader->setOutputDir(qt4ProFileNode->buildDir());

    return reader;
}

void Qt4Project::destroyProFileReader(ProFileReader *reader)
{
    delete reader;
    if (!--m_proFileOptionRefCnt) {
        QString dir = QFileInfo(m_fileInfo->fileName()).absolutePath();
        if (!dir.endsWith(QLatin1Char('/')))
            dir += QLatin1Char('/');
        ProFileCacheManager::instance()->discardFiles(dir);
        ProFileCacheManager::instance()->decRefCount();

        delete m_proFileOption;
        m_proFileOption = 0;
    }
}

Qt4ProFileNode *Qt4Project::rootProjectNode() const
{
    return m_rootProjectNode;
}

bool Qt4Project::validParse(const QString &proFilePath) const
{
    if (!m_rootProjectNode)
        return false;
    const Qt4ProFileNode *node = m_rootProjectNode->findProFileFor(proFilePath);
    return node && node->validParse();
}

QList<BuildConfigWidget*> Qt4Project::subConfigWidgets()
{
    QList<BuildConfigWidget*> subWidgets;
    subWidgets << new BuildEnvironmentWidget;
    return subWidgets;
}

void Qt4Project::collectAllfProFiles(QList<Qt4ProFileNode *> &list, Qt4ProFileNode *node)
{
    list.append(node);
    foreach (ProjectNode *n, node->subProjectNodes()) {
        Qt4ProFileNode *qt4ProFileNode = qobject_cast<Qt4ProFileNode *>(n);
        if (qt4ProFileNode)
            collectAllfProFiles(list, qt4ProFileNode);
    }
}


void Qt4Project::collectApplicationProFiles(QList<Qt4ProFileNode *> &list, Qt4ProFileNode *node)
{
    if (node->projectType() == Internal::ApplicationTemplate
        || node->projectType() == Internal::ScriptTemplate) {
        list.append(node);
    }
    foreach (ProjectNode *n, node->subProjectNodes()) {
        Qt4ProFileNode *qt4ProFileNode = qobject_cast<Qt4ProFileNode *>(n);
        if (qt4ProFileNode)
            collectApplicationProFiles(list, qt4ProFileNode);
    }
}

QList<Qt4ProFileNode *> Qt4Project::allProFiles() const
{
    QList<Qt4ProFileNode *> list;
    if (!rootProjectNode())
        return list;
    collectAllfProFiles(list, rootProjectNode());
    return list;
}

QList<Qt4ProFileNode *> Qt4Project::applicationProFiles() const
{
    QList<Qt4ProFileNode *> list;
    if (!rootProjectNode())
        return list;
    collectApplicationProFiles(list, rootProjectNode());
    return list;
}

bool Qt4Project::hasApplicationProFile(const QString &path) const
{
    if (path.isEmpty())
        return false;

    QList<Qt4ProFileNode *> list = applicationProFiles();
    foreach (Qt4ProFileNode * node, list)
        if (node->path() == path)
            return true;
    return false;
}

QStringList Qt4Project::applicationProFilePathes(const QString &prepend) const
{
    QStringList proFiles;
    foreach (Qt4ProFileNode *node, applicationProFiles())
        proFiles.append(prepend + node->path());
    return proFiles;
}

void Qt4Project::activeTargetWasChanged()
{
    if (!activeTarget())
        return;

    scheduleAsyncUpdate();
}

bool Qt4Project::hasSubNode(Qt4PriFileNode *root, const QString &path)
{
    if (root->path() == path)
        return true;
    foreach (FolderNode *fn, root->subFolderNodes()) {
        if (qobject_cast<Qt4ProFileNode *>(fn)) {
            // we aren't interested in pro file nodes
        } else if (Qt4PriFileNode *qt4prifilenode = qobject_cast<Qt4PriFileNode *>(fn)) {
            if (hasSubNode(qt4prifilenode, path))
                return true;
        }
    }
    return false;
}

void Qt4Project::findProFile(const QString& fileName, Qt4ProFileNode *root, QList<Qt4ProFileNode *> &list)
{
    if (hasSubNode(root, fileName))
        list.append(root);

    foreach (FolderNode *fn, root->subFolderNodes())
        if (Qt4ProFileNode *qt4proFileNode =  qobject_cast<Qt4ProFileNode *>(fn))
            findProFile(fileName, qt4proFileNode, list);
}

void Qt4Project::notifyChanged(const QString &name)
{
    if (files(Qt4Project::ExcludeGeneratedFiles).contains(name)) {
        QList<Qt4ProFileNode *> list;
        findProFile(name, rootProjectNode(), list);
        foreach(Qt4ProFileNode *node, list) {
            ProFileCacheManager::instance()->discardFile(name);
            node->update();
        }
    }
}

CentralizedFolderWatcher *Qt4Project::centralizedFolderWatcher()
{
    return &m_centralizedFolderWatcher;
}

/////////////
/// Centralized Folder Watcher
////////////

// All the folder have a trailing slash!

namespace {
   bool debugCFW = false;
}

CentralizedFolderWatcher::CentralizedFolderWatcher()
{
    m_compressTimer.setSingleShot(true);
    m_compressTimer.setInterval(200);
    connect(&m_compressTimer, SIGNAL(timeout()),
            this, SLOT(onTimer()));
    connect (&m_watcher, SIGNAL(directoryChanged(QString)),
             this, SLOT(folderChanged(QString)));
}

CentralizedFolderWatcher::~CentralizedFolderWatcher()
{

}

QSet<QString> CentralizedFolderWatcher::recursiveDirs(const QString &folder)
{
    QSet<QString> result;
    QDir dir(folder);
    QStringList list = dir.entryList(QDir::Dirs | QDir::NoSymLinks | QDir::NoDotAndDotDot);
    foreach (const QString &f, list) {
        const QString a = folder + f + '/';
        result.insert(a);
        result += recursiveDirs(a);
    }
    return result;
}

void CentralizedFolderWatcher::watchFolders(const QList<QString> &folders, Qt4PriFileNode *node)
{
    if (debugCFW)
        qDebug()<<"CFW::watchFolders()"<<folders<<"for node"<<node->path();
    m_watcher.addPaths(folders);

    foreach (const QString &f, folders) {
        QString folder = f;
        if (!folder.endsWith('/'))
            folder.append('/');
        m_map.insert(folder, node);

        // Support for recursive watching
        // we add the recursive directories we find
        QSet<QString> tmp = recursiveDirs(folder);
        if (!tmp.isEmpty())
            m_watcher.addPaths(tmp.toList());
        m_recursiveWatchedFolders += tmp;

        if (debugCFW)
            qDebug()<<"adding recursive dirs for"<< folder<<":"<<tmp;
    }
}

void CentralizedFolderWatcher::unwatchFolders(const QList<QString> &folders, Qt4PriFileNode *node)
{
    if (debugCFW)
        qDebug()<<"CFW::unwatchFolders()"<<folders<<"for node"<<node->path();
    foreach (const QString &f, folders) {
        QString folder = f;
        if (!folder.endsWith('/'))
            folder.append('/');
        m_map.remove(folder, node);
        if (!m_map.contains(folder)) {
            m_watcher.removePath(folder);
        }

        // Figure out which recursive directories we can remove
        // TODO this might not scale. I'm pretty sure it doesn't
        // A scaling implementation would need to save more information
        // where a given directory watcher actual comes from...

        QStringList toRemove;
        foreach (const QString &rwf, m_recursiveWatchedFolders) {
            if (rwf.startsWith(folder)) {
                // So the rwf is a subdirectory of a folder we aren't watching
                // but maybe someone else wants us to watch
                bool needToWatch = false;
                QMultiMap<QString, Qt4PriFileNode *>::const_iterator it, end;
                end = m_map.constEnd();
                for (it = m_map.constEnd(); it != end; ++it) {
                    if (rwf.startsWith(it.key())) {
                        needToWatch = true;
                        break;
                    }
                }
                if (!needToWatch) {
                    m_watcher.removePath(rwf);
                    toRemove << rwf;
                }
            }
        }

        if (debugCFW)
            qDebug()<<"removing recursive dirs for"<<folder<<":"<<toRemove;

        foreach (const QString &tr, toRemove) {
            m_recursiveWatchedFolders.remove(tr);
        }
    }
}

void CentralizedFolderWatcher::folderChanged(const QString &folder)
{
    m_changedFolders.insert(folder);
    m_compressTimer.start();
}

void CentralizedFolderWatcher::onTimer()
{
    foreach(const QString &folder, m_changedFolders)
        delayedFolderChanged(folder);
    m_changedFolders.clear();
}

void CentralizedFolderWatcher::delayedFolderChanged(const QString &folder)
{
    if (debugCFW)
        qDebug()<<"CFW::folderChanged"<<folder;
    // Figure out whom to inform

    QString dir = folder;
    while (true) {
        if (!dir.endsWith('/'))
            dir.append('/');
        QList<Qt4PriFileNode *> nodes = m_map.values(dir);
        foreach (Qt4PriFileNode *node, nodes) {
            node->folderChanged(folder);
        }

        // Chop off last part, and break if there's nothing to chop off
        //
        if (dir.length() < 2)
            break;

        // We start before the last slash
        int index = dir.lastIndexOf('/', dir.length() - 2);
        if (index == -1)
            break;
        dir = dir.left(index + 1);
    }


    QString folderWithSlash = folder;
    if (!folder.endsWith('/'))
        folderWithSlash.append('/');

    // If a subdirectory was added, watch it too
    QSet<QString> tmp = recursiveDirs(folderWithSlash);
    if (!tmp.isEmpty()) {
        if (debugCFW)
            qDebug()<<"found new recursive dirs"<<tmp;

        QSet<QString> alreadyAdded = m_watcher.directories().toSet();
        tmp.subtract(alreadyAdded);
        if (!tmp.isEmpty())
            m_watcher.addPaths(tmp.toList());
        m_recursiveWatchedFolders += tmp;
    }
}

/*!
  Handle special case were a subproject of the qt directory is opened, and
  qt was configured to be built as a shadow build -> also build in the sub-
  project in the correct shadow build directory.
  */

// TODO this function should be called on project first load
// and it should check against all configured qt versions ?
//void Qt4Project::detectQtShadowBuild(const QString &buildConfiguration) const
//{
//    if (project()->activeBuildConfiguration() == buildConfiguration)
//        return;
//
//    const QString currentQtDir = static_cast<Qt4Project *>(project())->qtDir(buildConfiguration);
//    const QString qtSourceDir = static_cast<Qt4Project *>(project())->qtVersion(buildConfiguration)->sourcePath();
//
//    // if the project is a sub-project of Qt and Qt was shadow-built then automatically
//    // adjust the build directory of the sub-project.
//    if (project()->file()->fileName().startsWith(qtSourceDir) && qtSourceDir != currentQtDir) {
//        project()->setValue(buildConfiguration, "useShadowBuild", true);
//        QString buildDir = project()->projectDirectory();
//        buildDir.replace(qtSourceDir, currentQtDir);
//        project()->setValue(buildConfiguration, "buildDirectory", buildDir);
//        project()->setValue(buildConfiguration, "autoShadowBuild", true);
//    }
//}