qt4nodes.cpp 33.7 KB
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/***************************************************************************
**
** This file is part of Qt Creator
**
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** Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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**
** Contact:  Qt Software Information (qt-info@nokia.com)
**
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**
** Non-Open Source Usage
**
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** Licensees may use this file in accordance with the Qt Beta Version
** License Agreement, Agreement version 2.2 provided with the Software or,
** alternatively, in accordance with the terms contained in a written
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** agreement between you and Nokia.
**
** GNU General Public License Usage
**
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** Alternatively, this file may be used under the terms of the GNU General
** Public License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the packaging
** of this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
**
** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
** http://www.gnu.org/copyleft/gpl.html.
**
** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt GPL Exception
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** version 1.3, included in the file GPL_EXCEPTION.txt in this package.
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**
***************************************************************************/
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#include "proeditormodel.h"
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#include "directorywatcher.h"
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#include "profilereader.h"
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#include "prowriter.h"
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#include "qt4nodes.h"
#include "qt4project.h"
#include "qt4projectmanager.h"

#include <projectexplorer/nodesvisitor.h>

#include <coreplugin/editormanager/editormanager.h>
#include <coreplugin/filemanager.h>
#include <coreplugin/icore.h>
#include <coreplugin/iversioncontrol.h>
#include <coreplugin/vcsmanager.h>

#include <cpptools/cppmodelmanagerinterface.h>
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#include <cplusplus/CppDocument.h>
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#include <extensionsystem/pluginmanager.h>
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#include <utils/qtcassert.h>

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#include <QtCore/QDebug>
#include <QtCore/QDir>
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QTimer>
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#include <QtGui/QMainWindow>
#include <QtGui/QMessageBox>
#include <QtGui/QPushButton>

using namespace Qt4ProjectManager;
using namespace Qt4ProjectManager::Internal;

namespace {
    bool debug = false;
}

namespace {
    // sorting helper function
    bool sortProjectFilesByPath(ProFile *f1, ProFile *f2)
    {
        return f1->fileName() < f2->fileName();
    }
}

/*!
  \class Qt4PriFileNode
  Implements abstract ProjectNode class
  */

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Qt4PriFileNode::Qt4PriFileNode(Qt4Project *project, Qt4ProFileNode* qt4ProFileNode, const QString &filePath)
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        : ProjectNode(filePath),
          m_project(project),
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          m_qt4ProFileNode(qt4ProFileNode),
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          m_projectFilePath(QDir::fromNativeSeparators(filePath)),
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          m_projectDir(QFileInfo(filePath).absolutePath()),
          m_fileWatcher(new FileWatcher(this))
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{
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    Q_ASSERT(project);
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    setFolderName(QFileInfo(filePath).baseName());
    setIcon(QIcon(":/qt4projectmanager/images/qt_project.png"));
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    m_fileWatcher->addFile(filePath);
    connect(m_fileWatcher, SIGNAL(fileChanged(QString)),
            this, SLOT(scheduleUpdate()));
}

void Qt4PriFileNode::scheduleUpdate()
{
    m_qt4ProFileNode->scheduleUpdate();
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}

void Qt4PriFileNode::update(ProFile *includeFile, ProFileReader *reader)
{
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    Q_ASSERT(includeFile);
    Q_ASSERT(reader);
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    // add project file node
    if (m_fileNodes.isEmpty())
        addFileNodes(QList<FileNode*>() << new FileNode(m_projectFilePath, ProjectFileType, false), this);

    static QList<FileType> fileTypes =
               (QList<FileType>() << ProjectExplorer::HeaderType
                                  << ProjectExplorer::SourceType
                                  << ProjectExplorer::FormType
                                  << ProjectExplorer::ResourceType
                                  << ProjectExplorer::UnknownFileType);

    // update files
    const QDir projectDir = QFileInfo(m_projectFilePath).dir();
    foreach (FileType type, fileTypes) {
        const QStringList qmakeVariables = varNames(type);

        QStringList newFilePaths;
        foreach (const QString &qmakeVariable, qmakeVariables)
            newFilePaths += reader->absolutePathValues(qmakeVariable, projectDir.path(), ProFileReader::ExistingFilePaths, includeFile);

        QList<FileNode*> existingFileNodes;
        foreach (FileNode *fileNode, fileNodes()) {
            if (fileNode->fileType() == type && !fileNode->isGenerated())
                existingFileNodes << fileNode;
        }

        QList<FileNode*> toRemove;
        QList<FileNode*> toAdd;

        qSort(newFilePaths);
        qSort(existingFileNodes.begin(), existingFileNodes.end(), ProjectNode::sortNodesByPath);

        QList<FileNode*>::const_iterator existingNodeIter = existingFileNodes.constBegin();
        QList<QString>::const_iterator newPathIter = newFilePaths.constBegin();
        while (existingNodeIter != existingFileNodes.constEnd()
               && newPathIter != newFilePaths.constEnd()) {
            if ((*existingNodeIter)->path() < *newPathIter) {
                toRemove << *existingNodeIter;
                ++existingNodeIter;
            } else if ((*existingNodeIter)->path() > *newPathIter) {
                toAdd << new FileNode(*newPathIter, type, false);
                ++newPathIter;
            } else { // *existingNodeIter->path() == *newPathIter
                ++existingNodeIter;
                ++newPathIter;
            }
        }
        while (existingNodeIter != existingFileNodes.constEnd()) {
            toRemove << *existingNodeIter;
            ++existingNodeIter;
        }
        while (newPathIter != newFilePaths.constEnd()) {
            toAdd << new FileNode(*newPathIter, type, false);
            ++newPathIter;
        }

        if (!toRemove.isEmpty())
            removeFileNodes(toRemove, this);
        if (!toAdd.isEmpty())
            addFileNodes(toAdd, this);
    }
}

QList<ProjectNode::ProjectAction> Qt4PriFileNode::supportedActions() const
{
    QList<ProjectAction> actions;
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    const FolderNode *folderNode = this;
    const Qt4ProFileNode *proFileNode;
    while (!(proFileNode = qobject_cast<const Qt4ProFileNode*>(folderNode)))
        folderNode = folderNode->parentFolderNode();
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    Q_ASSERT(proFileNode);
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    switch (proFileNode->projectType()) {
    case ApplicationTemplate:
    case LibraryTemplate:
        actions << AddFile << RemoveFile;
        break;
    case SubDirsTemplate:
        actions << AddSubProject << RemoveSubProject;
        break;
    default:
        break;
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    }
    return actions;
}

bool Qt4PriFileNode::addSubProjects(const QStringList &proFilePaths)
{
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    Q_UNUSED(proFilePaths);
    return false; //changeIncludes(m_includeFile, proFilePaths, AddToProFile);
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}

bool Qt4PriFileNode::removeSubProjects(const QStringList &proFilePaths)
{
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    Q_UNUSED(proFilePaths);
    return false; //changeIncludes(m_includeFile, proFilePaths, RemoveFromProFile);
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}

bool Qt4PriFileNode::addFiles(const FileType fileType, const QStringList &filePaths,
                           QStringList *notAdded)
{
    QStringList failedFiles;

    changeFiles(fileType, filePaths, &failedFiles, AddToProFile);
    if (notAdded)
        *notAdded = failedFiles;
    return failedFiles.isEmpty();
}

bool Qt4PriFileNode::removeFiles(const FileType fileType, const QStringList &filePaths,
                              QStringList *notRemoved)
{
    QStringList failedFiles;
    changeFiles(fileType, filePaths, &failedFiles, RemoveFromProFile);
    if (notRemoved)
        *notRemoved = failedFiles;
    return failedFiles.isEmpty();
}

bool Qt4PriFileNode::renameFile(const FileType fileType, const QString &filePath,
                             const QString &newFilePath)
{
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    if (newFilePath.isEmpty())
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        return false;

    if (!QFile::rename(filePath, newFilePath))
        return false;

    QStringList dummy;
    changeFiles(fileType, QStringList() << filePath, &dummy, RemoveFromProFile);
    if (!dummy.isEmpty())
        return false;
    changeFiles(fileType, QStringList() << newFilePath, &dummy, AddToProFile);
    if (!dummy.isEmpty())
        return false;
    return true;
}

bool Qt4PriFileNode::changeIncludes(ProFile *includeFile, const QStringList &proFilePaths,
                                    ChangeType change)
{
    Q_UNUSED(includeFile);
    Q_UNUSED(proFilePaths);
    Q_UNUSED(change);
    // TODO
    return false;
}

bool Qt4PriFileNode::priFileWritable(const QString &path)
{
    const QString dir = QFileInfo(path).dir().path();
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    Core::ICore *core = Core::ICore::instance();
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    Core::IVersionControl *versionControl = core->vcsManager()->findVersionControlForDirectory(dir);
    switch (Core::EditorManager::promptReadOnlyFile(path, versionControl, core->mainWindow(), false)) {
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    case Core::EditorManager::RO_OpenVCS:
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        if (!versionControl->vcsOpen(path)) {
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            QMessageBox::warning(core->mainWindow(), tr("Failed!"), tr("Could not open the file for edit with SCC."));
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            return false;
        }
        break;
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    case Core::EditorManager::RO_MakeWriteable: {
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        const bool permsOk = QFile::setPermissions(path, QFile::permissions(path) | QFile::WriteUser);
        if (!permsOk) {
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            QMessageBox::warning(core->mainWindow(), tr("Failed!"),  tr("Could not set permissions to writable."));
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            return false;
        }
        break;
    }
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    case Core::EditorManager::RO_SaveAs:
    case Core::EditorManager::RO_Cancel:
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        return false;
    }
    return true;
}

bool Qt4PriFileNode::saveModifiedEditors(const QString &path)
{
    QList<Core::IFile*> allFileHandles;
    QList<Core::IFile*> modifiedFileHandles;

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    Core::ICore *core = Core::ICore::instance();
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    foreach (Core::IFile *file, core->fileManager()->managedFiles(path)) {
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        allFileHandles << file;
    }

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    foreach (Core::IEditor *editor, core->editorManager()->editorsForFileName(path)) {
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        if (Core::IFile *editorFile = editor->file()) {
            if (editorFile->isModified())
                modifiedFileHandles << editorFile;
        }
    }

    if (!modifiedFileHandles.isEmpty()) {
        bool cancelled;
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        core->fileManager()->saveModifiedFiles(modifiedFileHandles, &cancelled,
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                                         tr("There are unsaved changes for project file %1.").arg(path));
        if (cancelled)
            return false;
        // force instant reload
        foreach (Core::IFile *fileHandle, allFileHandles) {
            Core::IFile::ReloadBehavior reload = Core::IFile::ReloadAll;
            fileHandle->modified(&reload);
        }
    }
    return true;
}

void Qt4PriFileNode::changeFiles(const FileType fileType,
                                 const QStringList &filePaths,
                                 QStringList *notChanged,
                                 ChangeType change)
{
    if (filePaths.isEmpty())
        return;

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    ProFileReader *reader = m_qt4ProFileNode->createProFileReader();
    if (!reader->readProFile(m_qt4ProFileNode->path())) {
        m_project->proFileParseError(tr("Error while parsing file %1. Giving up.").arg(m_projectFilePath));
        delete reader;
        return;
    }

    ProFile *includeFile = reader->proFileFor(m_projectFilePath);
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    if (!includeFile) {
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        m_project->proFileParseError(tr("Error while changing pro file %1.").arg(m_projectFilePath));
    }

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    *notChanged = filePaths;

    // Check for modified editors
    if (!saveModifiedEditors(m_projectFilePath))
        return;

    // Check if file is readonly
    ProEditorModel proModel;
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    proModel.setProFiles(QList<ProFile*>() << includeFile);
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    const QStringList vars = varNames(fileType);
    QDir priFileDir = QDir(m_projectDir);

    if (change == AddToProFile) {
        // root item "<Global Scope>"
        const QModelIndex root = proModel.index(0, 0);

        // Check if variable item exists as child of root item
        ProVariable *proVar = 0;
        int row = 0;
        for (; row < proModel.rowCount(root); ++row) {
            if ((proVar = proModel.proVariable(root.child(row, 0)))) {
                if (vars.contains(proVar->variable())
                    && proVar->variableOperator() != ProVariable::RemoveOperator
                    && proVar->variableOperator() != ProVariable::ReplaceOperator)
                    break;
                else
                    proVar = 0;
            }
        }

        if (!proVar) {
            // Create & append new variable item

            // TODO: This will always store e.g. a source file in SOURCES and not OBJECTIVE_SOURCES
            proVar = new ProVariable(vars.first(), proModel.proBlock(root));
            proVar->setVariableOperator(ProVariable::AddOperator);
            proModel.insertItem(proVar, row, root);
        }
        const QModelIndex varIndex = root.child(row, 0);

        foreach (const QString &filePath, filePaths) {
            const QString &relativeFilePath = priFileDir.relativeFilePath(filePath);
            proModel.insertItem(new ProValue(relativeFilePath, proVar),
                                proModel.rowCount(varIndex), varIndex);
            notChanged->removeOne(filePath);
        }
    } else { // RemoveFromProFile
        QList<QModelIndex> proVarIndexes = proModel.findVariables(vars);
        QList<QModelIndex> toRemove;

        QStringList relativeFilePaths;
        foreach (const QString &absoluteFilePath, filePaths)
            relativeFilePaths << priFileDir.relativeFilePath(absoluteFilePath);

        foreach (const QModelIndex &proVarIndex, proVarIndexes) {
            ProVariable *proVar = proModel.proVariable(proVarIndex);

            if (proVar->variableOperator() != ProVariable::RemoveOperator
                && proVar->variableOperator() != ProVariable::ReplaceOperator) {

                for (int row = proModel.rowCount(proVarIndex) - 1; row >= 0; --row) {
                    QModelIndex itemIndex = proModel.index(row, 0, proVarIndex);
                    ProItem *item = proModel.proItem(itemIndex);

                    if (item->kind() == ProItem::ValueKind) {
                        ProValue *val = static_cast<ProValue *>(item);
                        int index = relativeFilePaths.indexOf(val->value());
                        if (index != -1) {
                            toRemove.append(itemIndex);
                            notChanged->removeAt(index);
                        }
                    }
                }
            }
        }

        foreach (const QModelIndex &index, toRemove) {
            proModel.removeItem(index);
        }
    }

    // save file
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    save(includeFile);
    delete reader;
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}

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void Qt4PriFileNode::save(ProFile *includeFile)
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{
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    Core::ICore *core = Core::ICore::instance();
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    Core::FileManager *fileManager = core->fileManager();
    QList<Core::IFile *> allFileHandles = fileManager->managedFiles(includeFile->fileName());
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    Core::IFile *modifiedFileHandle = 0;
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    foreach (Core::IFile *file, allFileHandles)
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        if (file->fileName() == includeFile->fileName())
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            modifiedFileHandle = file;

    if (modifiedFileHandle)
        fileManager->blockFileChange(modifiedFileHandle);
    ProWriter pw;
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    const bool ok = pw.write(includeFile, includeFile->fileName());
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    Q_UNUSED(ok)
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    includeFile->setModified(false);
    m_project->qt4ProjectManager()->notifyChanged(includeFile->fileName());
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    if (modifiedFileHandle)
        fileManager->unblockFileChange(modifiedFileHandle);
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    Core::IFile::ReloadBehavior tempBehavior =
            Core::IFile::ReloadAll;
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    foreach (Core::IFile *file, allFileHandles)
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        file->modified(&tempBehavior);
}

/*
  Deletes all subprojects/files/virtual folders
  */
void Qt4PriFileNode::clear()
{
    // delete files && folders && projects
    if (!fileNodes().isEmpty())
        removeFileNodes(fileNodes(), this);
    if (!subProjectNodes().isEmpty())
        removeProjectNodes(subProjectNodes());
    if (!subFolderNodes().isEmpty())
        removeFolderNodes(subFolderNodes(), this);
}

QStringList Qt4PriFileNode::varNames(FileType type)
{
    QStringList vars;
    switch (type) {
    case ProjectExplorer::HeaderType:
        vars << QLatin1String("HEADERS");
        break;
    case ProjectExplorer::SourceType:
        vars << QLatin1String("SOURCES");
        vars << QLatin1String("OBJECTIVE_SOURCES");
        break;
    case ProjectExplorer::ResourceType:
        vars << QLatin1String("RESOURCES");
        break;
    case ProjectExplorer::FormType:
        vars << QLatin1String("FORMS");
        break;
    default:
        vars << QLatin1String("OTHER_FILES");
        break;
    }
    return vars;
}

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#include <projectexplorer/projectexplorer.h>
#include <projectexplorer/buildmanager.h>

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/*!
  \class Qt4ProFileNode
  Implements abstract ProjectNode class
  */
Qt4ProFileNode::Qt4ProFileNode(Qt4Project *project,
                               const QString &filePath,
                               QObject *parent)
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        : Qt4PriFileNode(project, this, filePath),
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          // own stuff
          m_projectType(InvalidProject),
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          m_isQBuildProject(false)
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{
    if (parent)
        setParent(parent);

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    m_updateTimer.setInterval(100);
    m_updateTimer.setSingleShot(true);

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    connect(m_project, SIGNAL(activeBuildConfigurationChanged()),
            this, SLOT(update()));
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    connect(&m_updateTimer, SIGNAL(timeout()),
            this, SLOT(update()));
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    connect(ProjectExplorer::ProjectExplorerPlugin::instance()->buildManager(), SIGNAL(buildStateChanged(ProjectExplorer::Project*)),
            this, SLOT(buildStateChanged(ProjectExplorer::Project*)));
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}

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Qt4ProFileNode::~Qt4ProFileNode()
{
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}

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void Qt4ProFileNode::buildStateChanged(ProjectExplorer::Project *project)
{
    if (project == m_project && !ProjectExplorer::ProjectExplorerPlugin::instance()->buildManager()->isBuilding(m_project))
        updateUiFiles();
}

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bool Qt4ProFileNode::hasTargets() const
{
    return (projectType() == ApplicationTemplate) || (projectType() == LibraryTemplate);
}

Qt4ProjectType Qt4ProFileNode::projectType() const
{
    return m_projectType;
}

QStringList Qt4ProFileNode::variableValue(const Qt4Variable var) const
{
    return m_varValues.value(var);
}

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void Qt4ProFileNode::scheduleUpdate()
{
    m_updateTimer.start();
}

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void Qt4ProFileNode::update()
{
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    ProFileReader *reader = createProFileReader();
    if (!reader->readProFile(m_projectFilePath)) {
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        m_project->proFileParseError(tr("Error while parsing file %1. Giving up.").arg(m_projectFilePath));
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        delete reader;
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        invalidate();
        return;
    }

    if (debug)
        qDebug() << "Qt4ProFileNode - updating files for file " << m_projectFilePath;

#ifdef QTEXTENDED_QBUILD_SUPPORT
    if (m_projectFilePath.endsWith("qbuild.pro")) {
        m_isQBuildProject = true;
    }
#endif

    Qt4ProjectType projectType = InvalidProject;
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    switch (reader->templateType()) {
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    case ProFileEvaluator::TT_Unknown:
    case ProFileEvaluator::TT_Application: {
        projectType = ApplicationTemplate;
        break;
    }
    case ProFileEvaluator::TT_Library: {
        projectType = LibraryTemplate;
        break;
    }
    case ProFileEvaluator::TT_Script: {
        projectType = ScriptTemplate;
        break;
    }
    case ProFileEvaluator::TT_Subdirs:
        projectType = SubDirsTemplate;
        break;
    }
    if (projectType != m_projectType) {
        Qt4ProjectType oldType = m_projectType;
        // probably all subfiles/projects have changed anyway ...
        clear();
        m_projectType = projectType;
        foreach (NodesWatcher *watcher, watchers())
            if (Qt4NodesWatcher *qt4Watcher = qobject_cast<Qt4NodesWatcher*>(watcher))
                emit qt4Watcher->projectTypeChanged(this, oldType, projectType);
    }

    //
    // Add/Remove pri files, sub projects
    //

    QList<ProjectNode*> existingProjectNodes = subProjectNodes();

    QList<QString> newProjectFiles;
    QHash<QString, ProFile*> includeFiles;
    ProFile *fileForCurrentProject = 0;
    {
        if (projectType == SubDirsTemplate) {
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            foreach (const QString &subDirProject, subDirsPaths(reader))
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                newProjectFiles << subDirProject;
        }

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        foreach (ProFile *includeFile, reader->includeFiles()) {
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            if (includeFile->fileName() == m_projectFilePath) { // this file
                fileForCurrentProject = includeFile;
            } else {
                newProjectFiles << includeFile->fileName();
                includeFiles.insert(includeFile->fileName(), includeFile);
            }
        }
    }

    qSort(existingProjectNodes.begin(), existingProjectNodes.end(),
          sortNodesByPath);
    qSort(newProjectFiles.begin(), newProjectFiles.end());

    QList<ProjectNode*> toAdd;
    QList<ProjectNode*> toRemove;

    QList<ProjectNode*>::const_iterator existingNodeIter = existingProjectNodes.constBegin();
    QList<QString>::const_iterator newProjectFileIter = newProjectFiles.constBegin();
    while (existingNodeIter != existingProjectNodes.constEnd()
               && newProjectFileIter != newProjectFiles.constEnd()) {
        if ((*existingNodeIter)->path() < *newProjectFileIter) {
            toRemove << *existingNodeIter;
            ++existingNodeIter;
        } else if ((*existingNodeIter)->path() > *newProjectFileIter) {
            if (ProFile *file = includeFiles.value(*newProjectFileIter)) {
                Qt4PriFileNode *priFileNode
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                    = new Qt4PriFileNode(m_project, this,
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                                         *newProjectFileIter);
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                priFileNode->update(file, reader);
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                toAdd << priFileNode;
            } else {
                toAdd << createSubProFileNode(*newProjectFileIter);
            }
            ++newProjectFileIter;
        } else { // *existingNodeIter->path() == *newProjectFileIter
             if (ProFile *file = includeFiles.value(*newProjectFileIter)) {
                Qt4PriFileNode *priFileNode = static_cast<Qt4PriFileNode*>(*existingNodeIter);
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                priFileNode->update(file, reader);
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            }

            ++existingNodeIter;
            ++newProjectFileIter;
        }
    }
    while (existingNodeIter != existingProjectNodes.constEnd()) {
        toRemove << *existingNodeIter;
        ++existingNodeIter;
    }
    while (newProjectFileIter != newProjectFiles.constEnd()) {
        if (ProFile *file = includeFiles.value(*newProjectFileIter)) {
            Qt4PriFileNode *priFileNode
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                    = new Qt4PriFileNode(m_project, this,
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                                         *newProjectFileIter);
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            priFileNode->update(file, reader);
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            toAdd << priFileNode;
        } else {
            toAdd << createSubProFileNode(*newProjectFileIter);
        }
        ++newProjectFileIter;
    }

    if (!toRemove.isEmpty())
        removeProjectNodes(toRemove);
    if (!toAdd.isEmpty())
        addProjectNodes(toAdd);

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    Qt4PriFileNode::update(fileForCurrentProject, reader);
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    // update other variables
    QHash<Qt4Variable, QStringList> newVarValues;
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    newVarValues[CxxCompilerVar] << reader->value(QLatin1String("QMAKE_CXX"));
    newVarValues[DefinesVar] = reader->values(QLatin1String("DEFINES"));
    newVarValues[IncludePathVar] = includePaths(reader);
    newVarValues[UiDirVar] = uiDirPaths(reader);
    newVarValues[MocDirVar] = mocDirPaths(reader);
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    if (m_varValues != newVarValues) {
        m_varValues = newVarValues;
        foreach (NodesWatcher *watcher, watchers())
            if (Qt4NodesWatcher *qt4Watcher = qobject_cast<Qt4NodesWatcher*>(watcher))
                emit qt4Watcher->variablesChanged(this, m_varValues, newVarValues);
    }

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    updateUiFiles();
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    foreach (NodesWatcher *watcher, watchers())
        if (Qt4NodesWatcher *qt4Watcher = qobject_cast<Qt4NodesWatcher*>(watcher))
            emit qt4Watcher->proFileUpdated(this);
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    delete reader;
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}

namespace {
    // find all ui files in project
    class FindUiFileNodesVisitor : public ProjectExplorer::NodesVisitor {
    public:
        void visitProjectNode(ProjectNode *projectNode)
        {
            visitFolderNode(projectNode);
        }
        void visitFolderNode(FolderNode *folderNode)
        {
            foreach (FileNode *fileNode, folderNode->fileNodes()) {
                if (fileNode->fileType() == ProjectExplorer::FormType)
                    uiFileNodes << fileNode;
            }
        }
        QList<FileNode*> uiFileNodes;
    };
}

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// This function is triggered after a build, and updates the state ui files
// That is it adds files that didn't exist yet to the project tree, and calls
// updateSourceFiles() for files that changed
// It does so by storing a modification time for each ui file we know about.

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// TODO this function should also be called if the build directory is changed
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void Qt4ProFileNode::updateUiFiles()
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{
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    // Only those two project types can have ui files for us
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    if (m_projectType != ApplicationTemplate
        && m_projectType != LibraryTemplate)
        return;

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    // Find all ui files
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    FindUiFileNodesVisitor uiFilesVisitor;
    this->accept(&uiFilesVisitor);
    const QList<FileNode*> uiFiles = uiFilesVisitor.uiFileNodes;

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    // Find the UiDir, there can only ever be one
    QString uiDir; // We should default to the build directory
    QStringList tmp = m_varValues[UiDirVar];
    if (tmp.size() != 0)
        uiDir = tmp.first();
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    // Collect all existing generated files
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    QList<FileNode*> existingFileNodes;
    foreach (FileNode *file, fileNodes()) {
        if (file->isGenerated())
            existingFileNodes << file;
    }
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    // Convert uiFile to uiHeaderFilePath, find all headers that correspond
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    // and try to find them in uiDir
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    QStringList newFilePaths;
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    foreach (FileNode *uiFile, uiFiles) {
        const QString uiHeaderFilePath
                = QString("%1/ui_%2.h").arg(uiDir, QFileInfo(uiFile->path()).baseName());
        if (QFileInfo(uiHeaderFilePath).exists())
            newFilePaths << uiHeaderFilePath;
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    }

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    // Create a diff between those lists
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    QList<FileNode*> toRemove;
    QList<FileNode*> toAdd;
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    // The list of files for which we call updateSourceFile
    QStringList toUpdate;
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    qSort(newFilePaths);
    qSort(existingFileNodes.begin(), existingFileNodes.end(), ProjectNode::sortNodesByPath);

    QList<FileNode*>::const_iterator existingNodeIter = existingFileNodes.constBegin();
    QList<QString>::const_iterator newPathIter = newFilePaths.constBegin();
    while (existingNodeIter != existingFileNodes.constEnd()
           && newPathIter != newFilePaths.constEnd()) {
        if ((*existingNodeIter)->path() < *newPathIter) {
            toRemove << *existingNodeIter;
            ++existingNodeIter;
        } else if ((*existingNodeIter)->path() > *newPathIter) {
            toAdd << new FileNode(*newPathIter, ProjectExplorer::HeaderType, true);
            ++newPathIter;
        } else { // *existingNodeIter->path() == *newPathIter
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            QString fileName = (*existingNodeIter)->path();
            QMap<QString, QDateTime>::const_iterator it = m_uitimestamps.find(fileName);
            QDateTime lastModified = QFileInfo(fileName).lastModified();
            if (it == m_uitimestamps.constEnd() || it.value() < lastModified) {
                toUpdate << fileName;
                m_uitimestamps[fileName] = lastModified;
            }
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            ++existingNodeIter;
            ++newPathIter;
        }
    }
    while (existingNodeIter != existingFileNodes.constEnd()) {
        toRemove << *existingNodeIter;
        ++existingNodeIter;
    }
    while (newPathIter != newFilePaths.constEnd()) {
        toAdd << new FileNode(*newPathIter, ProjectExplorer::HeaderType, true);
        ++newPathIter;
    }

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    // Update project tree
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    if (!toRemove.isEmpty()) {
        foreach (FileNode *file, toRemove)
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            m_uitimestamps.remove(file->path());
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        removeFileNodes(toRemove, this);
    }
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    CppTools::CppModelManagerInterface *modelManager =
        ExtensionSystem::PluginManager::instance()->getObject<CppTools::CppModelManagerInterface>();

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    if (!toAdd.isEmpty()) {
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        foreach (FileNode *file, toAdd) {
            m_uitimestamps.insert(file->path(), QFileInfo(file->path()).lastModified());
            toUpdate << file->path();

            // Also adding files depending on that.
            QString fileName = QFileInfo(file->path()).fileName();
            foreach (CPlusPlus::Document::Ptr doc, modelManager->snapshot()) {
                if (doc->includedFiles().contains(fileName)) {
                    if (!toUpdate.contains(doc->fileName()))
                        toUpdate << doc->fileName();
                }
            }
        }
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        addFileNodes(toAdd, this);
    }
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    modelManager->updateSourceFiles(toUpdate);
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}

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ProFileReader *Qt4PriFileNode::createProFileReader() const
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{
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    ProFileReader *reader = new ProFileReader();
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    connect(reader, SIGNAL(errorFound(QString)),
            m_project, SLOT(proFileParseError(QString)));
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    QtVersion *version = m_project->qtVersion(m_project->activeBuildConfiguration());
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    if (version->isValid())
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        reader->setQtVersion(version);

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    reader->setOutputDir(m_qt4ProFileNode->buildDir());
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    return reader;
}

Qt4ProFileNode *Qt4ProFileNode::createSubProFileNode(const QString &path)
{
    Qt4ProFileNode *subProFileNode = new Qt4ProFileNode(m_project, path);
    subProFileNode->update();
    return subProFileNode;
}

QStringList Qt4ProFileNode::uiDirPaths(ProFileReader *reader) const
{
    QStringList candidates = reader->absolutePathValues(QLatin1String("UI_DIR"),
                                                        buildDir(),
                                                        ProFileReader::ExistingPaths);
    return candidates;
}

QStringList Qt4ProFileNode::mocDirPaths(ProFileReader *reader) const
{
    QStringList candidates = reader->absolutePathValues(QLatin1String("MOC_DIR"),
                                                        buildDir(),
                                                        ProFileReader::ExistingPaths);
    return candidates;
}

QStringList Qt4ProFileNode::includePaths(ProFileReader *reader) const
{
    QStringList paths;
    paths = reader->absolutePathValues(QLatin1String("INCLUDEPATH"),
                                       m_projectDir,
                                       ProFileReader::ExistingPaths);
    paths << uiDirPaths(reader) << mocDirPaths(reader);
    paths.removeDuplicates();
    return paths;
}

QStringList Qt4ProFileNode::subDirsPaths(ProFileReader *reader) const
{
    QStringList subProjectPaths;

    const QStringList subDirVars = reader->values(QLatin1String("SUBDIRS"));

    foreach (const QString &subDirVar, subDirVars) {
        // Special case were subdir is just an identifier:
        //   "SUBDIR = subid
        //    subid.subdir = realdir"

        QString realDir;
        QString realFile;
        const QString subDirKey = subDirVar + QLatin1String(".subdir");
        if (reader->contains(subDirKey))
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            realDir = QFileInfo(reader->value(subDirKey)).filePath();
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         else
            realDir = subDirVar;
        QFileInfo info(realDir);
        if (!info.isAbsolute())
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            realDir = m_projectDir + "/" + realDir;
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#ifdef QTEXTENDED_QBUILD_SUPPORT
        // QBuild only uses project files named qbuild.pro, and subdirs are implied
        if (m_isQBuildProject)
            return qBuildSubDirsPaths(realDir);
#endif
        if (info.suffix().isEmpty() || info.isDir()) {
            realFile = QString("%1/%2.pro").arg(realDir, info.fileName());
            if (!QFile::exists(realFile)) {
                // parse directory for pro files - if there is only one, use that
                QDir dir(realDir);
                QStringList files = dir.entryList(QStringList() << "*.pro", QDir::Files);
                if (files.size() == 1) {
                    realFile = QString("%1/%2").arg(realDir, files.first());
                } else {
                    m_project->proFileParseError(tr("Could not find .pro file for sub dir '%1' in '%2'")
                            .arg(subDirVar).arg(realDir));
                    realFile = QString::null;
                }
            }
        } else {
            realFile = realDir;
        }

        if (!realFile.isEmpty() && !subProjectPaths.contains(realFile))
            subProjectPaths << realFile;
    }

    return subProjectPaths;
}

QStringList Qt4ProFileNode::qBuildSubDirsPaths(const QString &scanDir) const
{
    QStringList subProjectPaths;

    // With QBuild we only look for project files named qbuild.pro
    QString realFile = scanDir + "/qbuild.pro";
    if (QFile::exists(realFile))
        subProjectPaths << realFile;

    // With QBuild 'subdirs' are implied
    QDir dir(scanDir);
    QStringList subDirs = dir.entryList(QDir::Dirs | QDir::NoDotAndDotDot);
    foreach (QString subDir, subDirs) {
        // 'tests' sub directories are an exception to the 'QBuild scans everything' rule.
        // Tests are only build with the 'make test' command, in which case QBuild WILL look
        // for a tests subdir and run everything in there.
        if (subDir != "tests")
            subProjectPaths += qBuildSubDirsPaths(scanDir + "/" + subDir);
    }

    return subProjectPaths;
}

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QString Qt4PriFileNode::buildDir() const
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{
    const QDir srcDirRoot = QFileInfo(m_project->rootProjectNode()->path()).absoluteDir();
    const QString relativeDir = srcDirRoot.relativeFilePath(m_projectDir);
    return QDir(m_project->buildDirectory(m_project->activeBuildConfiguration())).absoluteFilePath(relativeDir);
}

/*
  Sets project type to InvalidProject & deletes all subprojects/files/virtual folders
  */
void Qt4ProFileNode::invalidate()
{
    if (m_projectType == InvalidProject)
        return;

    clear();

    // change project type
    Qt4ProjectType oldType = m_projectType;
    m_projectType = InvalidProject;


    foreach (NodesWatcher *watcher, watchers())
        if (Qt4NodesWatcher *qt4Watcher = qobject_cast<Qt4NodesWatcher*>(watcher))
            emit qt4Watcher->projectTypeChanged(this, oldType, InvalidProject);
}

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Qt4NodesWatcher::Qt4NodesWatcher(QObject *parent)
        : NodesWatcher(parent)
{
}