ProjectExplorer: Handle project file list globally

Handle the generation of the list of files in a project globally, based
on the project tree.

Creator now has the concept of TreeManagers which can enrich the project
tree with additional data (e.g. the files found in a resource file), which
the project does not necessarily know about. So use that tree to find
the files that belong to a project instead of implementing similar features
in each project.

Change-Id: Ia375a914a1f2c0adaa427f9eda834eec2db07f68
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Marco Benelli <marco.benelli@qt.io>

19 files changed, 43 insertions, 200 deletions

diff --git a/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp b/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
index 296142ec5a..d7d389ed3a 100644
--- a/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
+++ b/src/plugins/autotoolsprojectmanager/autotoolsproject.cpp
@@ -101,12 +101,6 @@ QString AutotoolsProject::defaultBuildDirectory(const QString &projectPath)
     return QFileInfo(projectPath).absolutePath();
 }
 
-QStringList AutotoolsProject::files(FilesMode fileMode) const
-{
-    Q_UNUSED(fileMode);
-    return m_files;
-}
-
 // This function, is called at the very beginning, to
 // restore the settings if there are some stored.
 Project::RestoreResult AutotoolsProject::fromMap(const QVariantMap &map, QString *errorMessage)
diff --git a/src/plugins/autotoolsprojectmanager/autotoolsproject.h b/src/plugins/autotoolsprojectmanager/autotoolsproject.h
index 9e90c12d80..3ebaeb763a 100644
--- a/src/plugins/autotoolsprojectmanager/autotoolsproject.h
+++ b/src/plugins/autotoolsprojectmanager/autotoolsproject.h
@@ -58,7 +58,6 @@ public:
     ~AutotoolsProject() override;
 
     QString displayName() const override;
-    QStringList files(FilesMode fileMode) const override;
     static QString defaultBuildDirectory(const QString &projectPath);
     QStringList buildTargets() const;
 
diff --git a/src/plugins/cmakeprojectmanager/cmakeproject.cpp b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
index 7e77cba361..cf9d0f0ca4 100644
--- a/src/plugins/cmakeprojectmanager/cmakeproject.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeproject.cpp
@@ -306,21 +306,6 @@ QString CMakeProject::displayName() const
     return root ? root->displayName() : projectDirectory().fileName();
 }
 
-QStringList CMakeProject::files(FilesMode fileMode) const
-{
-    QStringList result;
-    if (ProjectNode *rpn = rootProjectNode()) {
-        rpn->forEachNode([&](const FileNode *fn) {
-            const bool isGenerated = fn->isGenerated();
-            if ((fileMode & Project::SourceFiles) && !isGenerated)
-                result.append(fn->filePath().toString());
-            if ((fileMode & Project::GeneratedFiles) && isGenerated)
-                result.append(fn->filePath().toString());
-        });
-    }
-    return result;
-}
-
 Project::RestoreResult CMakeProject::fromMap(const QVariantMap &map, QString *errorMessage)
 {
     RestoreResult result = Project::fromMap(map, errorMessage);
diff --git a/src/plugins/cmakeprojectmanager/cmakeproject.h b/src/plugins/cmakeprojectmanager/cmakeproject.h
index 33890fcd8f..f0bc68ce12 100644
--- a/src/plugins/cmakeprojectmanager/cmakeproject.h
+++ b/src/plugins/cmakeprojectmanager/cmakeproject.h
@@ -88,7 +88,6 @@ public:
 
     QString displayName() const final;
 
-    QStringList files(FilesMode fileMode) const final;
     QStringList buildTargetTitles(bool runnable = false) const;
     bool hasBuildTarget(const QString &title) const;
 
diff --git a/src/plugins/cpptools/modelmanagertesthelper.h b/src/plugins/cpptools/modelmanagertesthelper.h
index f7ef4ec189..18f0d6b5ef 100644
--- a/src/plugins/cpptools/modelmanagertesthelper.h
+++ b/src/plugins/cpptools/modelmanagertesthelper.h
@@ -45,8 +45,6 @@ public:
 
     QString displayName() const override { return m_name; }
 
-    QStringList files(FilesMode fileMode) const override { Q_UNUSED(fileMode); return QStringList(); }
-
 private:
     QString m_name;
 };
diff --git a/src/plugins/genericprojectmanager/genericproject.cpp b/src/plugins/genericprojectmanager/genericproject.cpp
index c8b14a125d..8d70582f50 100644
--- a/src/plugins/genericprojectmanager/genericproject.cpp
+++ b/src/plugins/genericprojectmanager/genericproject.cpp
@@ -249,9 +249,6 @@ void GenericProject::parseProject(RefreshOptions options)
         // TODO: Possibly load some configuration from the project file
         //QSettings projectInfo(m_fileName, QSettings::IniFormat);
     }
-
-    if (options & Files)
-        emit fileListChanged();
 }
 
 void GenericProject::refresh(RefreshOptions options)
@@ -261,7 +258,7 @@ void GenericProject::refresh(RefreshOptions options)
     if (options & Files) {
         auto newRoot = new GenericProjectNode(this);
 
-        for (const QString &f : files()) {
+        for (const QString &f : m_files) {
             FileType fileType = FileType::Source; // ### FIXME
             if (f.endsWith(".qrc"))
                 fileType = FileType::Resource;
@@ -364,7 +361,7 @@ void GenericProject::refreshCppCodeModel()
     rpp.setQtVersion(activeQtVersion);
     rpp.setIncludePaths(projectIncludePaths());
     rpp.setConfigFileName(configFileName());
-    rpp.setFiles(files());
+    rpp.setFiles(m_files);
 
     const CppTools::ProjectUpdateInfo projectInfoUpdate(this, cToolChain, cxxToolChain, k, {rpp});
     m_cppCodeModelUpdater->update(projectInfoUpdate);
@@ -397,22 +394,11 @@ QStringList GenericProject::projectIncludePaths() const
     return m_projectIncludePaths;
 }
 
-QStringList GenericProject::files() const
-{
-    return m_files;
-}
-
 QString GenericProject::displayName() const
 {
     return projectFilePath().toFileInfo().completeBaseName();
 }
 
-QStringList GenericProject::files(FilesMode fileMode) const
-{
-    Q_UNUSED(fileMode);
-    return m_files;
-}
-
 QStringList GenericProject::buildTargets() const
 {
     const QStringList targets = { "all", "clean" };
diff --git a/src/plugins/genericprojectmanager/genericproject.h b/src/plugins/genericprojectmanager/genericproject.h
index c63614ed6f..a2d163328d 100644
--- a/src/plugins/genericprojectmanager/genericproject.h
+++ b/src/plugins/genericprojectmanager/genericproject.h
@@ -57,8 +57,6 @@ public:
 
     QString displayName() const override;
 
-    QStringList files(FilesMode fileMode) const override;
-
     QStringList buildTargets() const;
 
     bool addFiles(const QStringList &filePaths);
@@ -75,7 +73,6 @@ public:
     void refresh(RefreshOptions options);
 
     QStringList projectIncludePaths() const;
-    QStringList files() const;
 
 protected:
     RestoreResult fromMap(const QVariantMap &map, QString *errorMessage) override;
diff --git a/src/plugins/genericprojectmanager/genericprojectplugin.cpp b/src/plugins/genericprojectmanager/genericprojectplugin.cpp
index fb69394ff5..edd5d42866 100644
--- a/src/plugins/genericprojectmanager/genericprojectplugin.cpp
+++ b/src/plugins/genericprojectmanager/genericprojectplugin.cpp
@@ -87,7 +87,8 @@ void GenericProjectPlugin::editFiles()
     if (!genericProject)
         return;
     SelectableFilesDialogEditFiles sfd(genericProject->projectDirectory(),
-                                       Utils::transform(genericProject->files(), [](const QString &f) { return Utils::FileName::fromString(f); }),
+                                       Utils::transform(genericProject->files(Project::AllFiles),
+                                                        [](const QString &f) { return Utils::FileName::fromString(f); }),
                                        ICore::mainWindow());
     if (sfd.exec() == QDialog::Accepted)
         genericProject->setFiles(Utils::transform(sfd.selectedFiles(), &Utils::FileName::toString));
diff --git a/src/plugins/nim/project/nimproject.cpp b/src/plugins/nim/project/nimproject.cpp
index a73daf1095..35795954eb 100644
--- a/src/plugins/nim/project/nimproject.cpp
+++ b/src/plugins/nim/project/nimproject.cpp
@@ -34,6 +34,7 @@
 #include <projectexplorer/buildconfiguration.h>
 #include <projectexplorer/kit.h>
 #include <projectexplorer/projectexplorerconstants.h>
+#include <projectexplorer/projectnodes.h>
 #include <projectexplorer/target.h>
 #include <projectexplorer/toolchain.h>
 #include <projectexplorer/kitinformation.h>
@@ -73,11 +74,6 @@ QString NimProject::displayName() const
     return projectFilePath().toFileInfo().completeBaseName();
 }
 
-QStringList NimProject::files(FilesMode) const
-{
-    return m_files;
-}
-
 bool NimProject::needsConfiguration() const
 {
     return targets().empty();
@@ -133,7 +129,7 @@ void NimProject::collectProjectFiles()
 
 void NimProject::updateProject()
 {
-    QStringList oldFiles = m_files;
+    const QStringList oldFiles = m_files;
     m_files.clear();
 
     QList<FileNode *> fileNodes = Utils::filtered(m_futureWatcher.future().result(),
@@ -158,9 +154,6 @@ void NimProject::updateProject()
     newRoot->setDisplayName(displayName());
     newRoot->addNestedNodes(fileNodes);
     setRootProjectNode(newRoot);
-
-    emit fileListChanged();
-
     emit parsingFinished();
 }
 
@@ -182,12 +175,10 @@ bool NimProject::supportsKit(Kit *k, QString *errorMessage) const
 
 FileNameList NimProject::nimFiles() const
 {
-    FileNameList result;
-    rootProjectNode()->forEachNode([&](FileNode *file) {
-        if (file->displayName().endsWith(QLatin1String(".nim")))
-            result.append(file->filePath());
+    const QStringList nim = files(AllFiles, [](const ProjectExplorer::FileNode *fn) {
+        return fn->filePath().endsWith(".nim");
     });
-    return result;
+    return Utils::transform(nim, [](const QString &fp) { return Utils::FileName::fromString(fp); });
 }
 
 QVariantMap NimProject::toMap() const
@@ -203,4 +194,4 @@ Project::RestoreResult NimProject::fromMap(const QVariantMap &map, QString *erro
     return Project::fromMap(map, errorMessage);
 }
 
-}
+} // namespace Nim
diff --git a/src/plugins/nim/project/nimproject.h b/src/plugins/nim/project/nimproject.h
index 7ea82a0c81..5072ce478d 100644
--- a/src/plugins/nim/project/nimproject.h
+++ b/src/plugins/nim/project/nimproject.h
@@ -42,7 +42,6 @@ public:
     explicit NimProject(const Utils::FileName &fileName);
 
     QString displayName() const override;
-    QStringList files(FilesMode) const override;
     bool needsConfiguration() const override;
     bool supportsKit(ProjectExplorer::Kit *k, QString *errorMessage) const override;
     Utils::FileNameList nimFiles() const;
diff --git a/src/plugins/projectexplorer/project.cpp b/src/plugins/projectexplorer/project.cpp
index 6b092b676a..1549c51795 100644
--- a/src/plugins/projectexplorer/project.cpp
+++ b/src/plugins/projectexplorer/project.cpp
@@ -476,6 +476,7 @@ void Project::setRootProjectNode(ProjectNode *root)
     if (root)
         root->setParentFolderNode(&d->m_containerNode);
     ProjectTree::emitSubtreeChanged(root);
+    emit fileListChanged();
 
     delete oldNode;
 }
@@ -524,6 +525,25 @@ Project::RestoreResult Project::restoreSettings(QString *errorMessage)
     return result;
 }
 
+QStringList Project::files(Project::FilesMode fileMode,
+                           const std::function<bool (const FileNode *)> &filter) const
+{
+    QStringList result;
+
+    if (!rootProjectNode())
+        return result;
+
+    rootProjectNode()->forEachNode([&](const FileNode *fn) {
+        if (filter && !filter(fn))
+            return;
+        if ((fileMode == AllFiles)
+                || (fileMode == SourceFiles && !fn->isGenerated())
+                || (fileMode == GeneratedFiles && fn->isGenerated()))
+            result.append(fn->filePath().toString());
+    });
+    return result;
+}
+
 
 /*!
     Serializes all data into a QVariantMap.
diff --git a/src/plugins/projectexplorer/project.h b/src/plugins/projectexplorer/project.h
index 3c7623cfcd..daed9e5afc 100644
--- a/src/plugins/projectexplorer/project.h
+++ b/src/plugins/projectexplorer/project.h
@@ -36,6 +36,8 @@
 #include <QObject>
 #include <QFileSystemModel>
 
+#include <functional>
+
 namespace Core {
 class IDocument;
 class Context;
@@ -47,6 +49,7 @@ namespace ProjectExplorer {
 
 class BuildInfo;
 class EditorConfiguration;
+class FileNode;
 class NamedWidget;
 class ProjectImporter;
 class ProjectNode;
@@ -112,7 +115,8 @@ public:
         GeneratedFiles = 0x2,
         AllFiles       = SourceFiles | GeneratedFiles
     };
-    virtual QStringList files(FilesMode fileMode) const = 0;
+    virtual QStringList files(FilesMode fileMode,
+                              const std::function<bool(const FileNode *)> &filter = {}) const;
     virtual QStringList filesGeneratedFrom(const QString &sourceFile) const;
 
     static QString makeUnique(const QString &preferredName, const QStringList &usedNames);
diff --git a/src/plugins/pythoneditor/pythoneditorplugin.cpp b/src/plugins/pythoneditor/pythoneditorplugin.cpp
index 08f2ffc95a..967c5f58a6 100644
--- a/src/plugins/pythoneditor/pythoneditorplugin.cpp
+++ b/src/plugins/pythoneditor/pythoneditorplugin.cpp
@@ -96,9 +96,6 @@ public:
 
     QString displayName() const override;
 
-    QStringList files(FilesMode) const override { return m_files; }
-    QStringList files() const { return m_files; }
-
     bool addFiles(const QStringList &filePaths);
     bool removeFiles(const QStringList &filePaths);
     bool setFiles(const QStringList &filePaths);
@@ -356,7 +353,7 @@ public:
 
         PythonProject *project = static_cast<PythonProject *>(parent->project());
         QList<Core::Id> allIds;
-        foreach (const QString &file, project->files())
+        foreach (const QString &file, project->files(ProjectExplorer::Project::AllFiles))
             allIds.append(idFromScript(file));
         return allIds;
     }
@@ -371,7 +368,7 @@ public:
         if (!canHandle(parent))
             return false;
         PythonProject *project = static_cast<PythonProject *>(parent->project());
-        return project->files().contains(scriptFromId(id));
+        return project->files(ProjectExplorer::Project::AllFiles).contains(scriptFromId(id));
     }
 
     bool canRestore(Target *parent, const QVariantMap &map) const override
@@ -533,7 +530,6 @@ void PythonProject::parseProject()
     m_rawFileList = readLines(projectFilePath().toString());
     m_rawFileList << projectFilePath().fileName();
     m_files = processEntries(m_rawFileList, &m_rawListEntries);
-    emit fileListChanged();
 }
 
 /**
diff --git a/src/plugins/qbsprojectmanager/qbsproject.cpp b/src/plugins/qbsprojectmanager/qbsproject.cpp
index ec047b8639..56c326896e 100644
--- a/src/plugins/qbsprojectmanager/qbsproject.cpp
+++ b/src/plugins/qbsprojectmanager/qbsproject.cpp
@@ -175,58 +175,6 @@ void QbsProject::projectLoaded()
     m_parsingDelay.start(0);
 }
 
-static void collectFilesForProject(const qbs::ProjectData &project, Project::FilesMode mode,
-                                   QSet<QString> &result)
-{
-    if (mode & Project::SourceFiles)
-        result.insert(project.location().filePath());
-
-    foreach (const qbs::ProductData &prd, project.products()) {
-        if (mode & Project::SourceFiles) {
-            foreach (const qbs::GroupData &grp, prd.groups()) {
-                foreach (const QString &file, grp.allFilePaths())
-                    result.insert(file);
-                result.insert(grp.location().filePath());
-            }
-            result.insert(prd.location().filePath());
-        }
-        if (mode & Project::GeneratedFiles) {
-            foreach (const qbs::ProductData &prd, project.products()) {
-                foreach (const qbs::ArtifactData &artifact, prd.generatedArtifacts()) {
-                    // A list of human-readable file types that we can reasonably expect
-                    // to get generated during a build. Extend as needed.
-                    static const QSet<QString> sourceTags = {
-                        QLatin1String("c"), QLatin1String("cpp"), QLatin1String("hpp"),
-                        QLatin1String("objc"), QLatin1String("objcpp"),
-                        QLatin1String("c_pch_src"), QLatin1String("cpp_pch_src"),
-                        QLatin1String("objc_pch_src"), QLatin1String("objcpp_pch_src"),
-                        QLatin1String("asm"), QLatin1String("asm_cpp"),
-                        QLatin1String("linkerscript"),
-                        QLatin1String("qrc"), QLatin1String("java.java")
-                    };
-                    if (artifact.fileTags().toSet().intersects(sourceTags))
-                        result.insert(artifact.filePath());
-                }
-            }
-        }
-    }
-
-    foreach (const qbs::ProjectData &subProject, project.subProjects())
-        collectFilesForProject(subProject, mode, result);
-}
-
-QStringList QbsProject::files(Project::FilesMode fileMode) const
-{
-    qCDebug(qbsPmLog) << Q_FUNC_INFO << fileMode << m_qbsProject.isValid() << isParsing();
-    if (!m_qbsProject.isValid() || isParsing())
-        return QStringList();
-    QSet<QString> result;
-    collectFilesForProject(m_projectData, fileMode, result);
-    result.unite(m_qbsProject.buildSystemFiles());
-    qCDebug(qbsPmLog) << "file count:" << result.count();
-    return result.toList();
-}
-
 QStringList QbsProject::filesGeneratedFrom(const QString &sourceFile) const
 {
     QStringList generated;
@@ -312,7 +260,6 @@ bool QbsProject::addFilesToProduct(const QStringList &filePaths,
     if (notAdded->count() != filePaths.count()) {
         m_projectData = m_qbsProject.projectData();
         setRootProjectNode(Internal::QbsNodeTreeBuilder::buildTree(this));
-        emit fileListChanged();
     }
     return notAdded->isEmpty();
 }
diff --git a/src/plugins/qbsprojectmanager/qbsproject.h b/src/plugins/qbsprojectmanager/qbsproject.h
index c2d7c1df23..dd24093e42 100644
--- a/src/plugins/qbsprojectmanager/qbsproject.h
+++ b/src/plugins/qbsprojectmanager/qbsproject.h
@@ -64,7 +64,6 @@ public:
     QString displayName() const override;
     QbsRootProjectNode *rootProjectNode() const override;
 
-    QStringList files(FilesMode fileMode) const override;
     QStringList filesGeneratedFrom(const QString &sourceFile) const override;
 
     bool isProjectEditable() const;
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.cpp b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
index a3c504e17f..0d76e07cdb 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.cpp
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.cpp
@@ -191,7 +191,6 @@ static QList<QmakeProject *> s_projects;
   */
 
 QmakeProject::QmakeProject(const FileName &fileName) :
-    m_projectFiles(new QmakeProjectFiles),
     m_qmakeVfs(new QMakeVfs),
     m_cppCodeModelUpdater(new CppTools::CppProjectUpdater(this))
 {
@@ -230,7 +229,6 @@ QmakeProject::~QmakeProject()
     setRootProjectNode(nullptr);
     m_rootProFile.reset();
 
-    delete m_projectFiles;
     m_cancelEvaluate = true;
     Q_ASSERT(m_qmakeGlobalsRefCnt == 0);
     delete m_qmakeVfs;
@@ -241,32 +239,6 @@ QmakeProFile *QmakeProject::rootProFile() const
     return m_rootProFile.get();
 }
 
-void QmakeProject::updateFileList()
-{
-    QmakeProjectFiles files;
-    rootProjectNode()->forEachNode([&](FileNode *fileNode) {
-        const int type = static_cast<int>(fileNode->fileType());
-        QStringList &targetList = fileNode->isGenerated() ? files.generatedFiles[type] : files.files[type];
-        targetList.push_back(fileNode->filePath().toString());
-    }, [&](FolderNode *folderNode) {
-        if (ProjectNode *projectNode = folderNode->asProjectNode())
-            files.proFiles.append(projectNode->filePath().toString());
-        if (dynamic_cast<ResourceEditor::ResourceTopLevelNode *>(folderNode))
-            files.files[static_cast<int>(FileType::Resource)].push_back(folderNode->filePath().toString());
-    });
-
-    for (QStringList &f : files.files)
-        f.removeDuplicates();
-    for (QStringList &f : files.generatedFiles)
-        f.removeDuplicates();
-    files.proFiles.removeDuplicates();
-
-    if (files != *m_projectFiles) {
-        *m_projectFiles = files;
-        emit fileListChanged();
-    }
-}
-
 Project::RestoreResult QmakeProject::fromMap(const QVariantMap &map, QString *errorMessage)
 {
     RestoreResult result = Project::fromMap(map, errorMessage);
@@ -576,7 +548,6 @@ void QmakeProject::decrementPendingEvaluateFutures()
             setAllBuildConfigurationsEnabled(true);
 
             m_asyncUpdateState = Base;
-            updateFileList();
             updateCodeModels();
             updateBuildSystemData();
             if (activeTarget())
@@ -639,21 +610,6 @@ QString QmakeProject::displayName() const
     return projectFilePath().toFileInfo().completeBaseName();
 }
 
-QStringList QmakeProject::files(FilesMode fileMode) const
-{
-    QStringList files;
-    for (int i = 0; i < static_cast<int>(FileType::FileTypeSize); ++i) {
-        if (fileMode & SourceFiles)
-            files += m_projectFiles->files[i];
-        if (fileMode & GeneratedFiles)
-            files += m_projectFiles->generatedFiles[i];
-    }
-
-    files.removeDuplicates();
-
-    return files;
-}
-
 // Find the folder that contains a file with a certain name (recurse down)
 static FolderNode *folderOf(FolderNode *in, const FileName &fileName)
 {
@@ -1086,10 +1042,8 @@ void CentralizedFolderWatcher::delayedFolderChanged(const QString &folder)
         m_recursiveWatchedFolders += tmp;
     }
 
-    if (newOrRemovedFiles) {
-        m_project->updateFileList();
+    if (newOrRemovedFiles)
         m_project->updateCodeModels();
-    }
 }
 
 bool QmakeProject::needsConfiguration() const
diff --git a/src/plugins/qmakeprojectmanager/qmakeproject.h b/src/plugins/qmakeprojectmanager/qmakeproject.h
index fb96fbc266..2f4fb8a427 100644
--- a/src/plugins/qmakeprojectmanager/qmakeproject.h
+++ b/src/plugins/qmakeprojectmanager/qmakeproject.h
@@ -73,7 +73,6 @@ public:
     bool validParse(const Utils::FileName &proFilePath) const;
     bool parseInProgress(const Utils::FileName &proFilePath) const;
 
-    virtual QStringList files(FilesMode fileMode) const final;
     virtual QStringList filesGeneratedFrom(const QString &file) const final;
 
     enum Parsing {ExactParse, ExactAndCumulativeParse };
@@ -109,8 +108,6 @@ public:
     /// \internal
     bool wasEvaluateCanceled();
 
-    // For QmakeProFileNode after a on disk change
-    void updateFileList();
     void updateCodeModels();
 
     void watchFolders(const QStringList &l, QmakePriFile *file);
@@ -188,9 +185,6 @@ private:
 
     std::unique_ptr<QmakeProFile> m_rootProFile;
 
-    // cached lists of all of files
-    Internal::QmakeProjectFiles *m_projectFiles = nullptr;
-
     QMakeVfs *m_qmakeVfs = nullptr;
 
     // cached data during project rescan
diff --git a/src/plugins/qmlprojectmanager/qmlproject.cpp b/src/plugins/qmlprojectmanager/qmlproject.cpp
index bb88cc898e..43fbe6ab56 100644
--- a/src/plugins/qmlprojectmanager/qmlproject.cpp
+++ b/src/plugins/qmlprojectmanager/qmlproject.cpp
@@ -168,9 +168,6 @@ void QmlProject::parseProject(RefreshOptions options)
     if (options & Configuration) {
         // update configuration
     }
-
-    if (options & Files)
-        emit fileListChanged();
 }
 
 void QmlProject::refresh(RefreshOptions options)
@@ -195,16 +192,6 @@ void QmlProject::refresh(RefreshOptions options)
     emit parsingFinished();
 }
 
-QStringList QmlProject::files() const
-{
-    QStringList files;
-    if (m_projectItem)
-        files = m_projectItem.data()->files();
-    else
-        files = m_files;
-    return files;
-}
-
 QString QmlProject::mainFile() const
 {
     if (m_projectItem)
@@ -296,11 +283,6 @@ Internal::QmlProjectNode *QmlProject::rootProjectNode() const
     return static_cast<Internal::QmlProjectNode *>(Project::rootProjectNode());
 }
 
-QStringList QmlProject::files(FilesMode) const
-{
-    return files();
-}
-
 Project::RestoreResult QmlProject::fromMap(const QVariantMap &map, QString *errorMessage)
 {
     RestoreResult result = Project::fromMap(map, errorMessage);
@@ -371,9 +353,12 @@ Project::RestoreResult QmlProject::fromMap(const QVariantMap &map, QString *erro
 
 void QmlProject::generateProjectTree()
 {
+    if (!m_projectItem)
+        return;
+
     auto newRoot = new Internal::QmlProjectNode(this);
 
-    for (const QString &f : files()) {
+    for (const QString &f : m_projectItem.data()->files()) {
         FileType fileType = FileType::Source; // ### FIXME
         if (f == projectFilePath().toString())
             fileType = FileType::Project;
diff --git a/src/plugins/qmlprojectmanager/qmlproject.h b/src/plugins/qmlprojectmanager/qmlproject.h
index c8900b6ebe..616c2c6d18 100644
--- a/src/plugins/qmlprojectmanager/qmlproject.h
+++ b/src/plugins/qmlprojectmanager/qmlproject.h
@@ -51,7 +51,6 @@ public:
     bool supportsKit(ProjectExplorer::Kit *k, QString *errorMessage) const override;
 
     Internal::QmlProjectNode *rootProjectNode() const override;
-    QStringList files(FilesMode fileMode) const override;
 
     bool validProjectFile() const;
 
@@ -66,7 +65,6 @@ public:
     void refresh(RefreshOptions options);
 
     QDir projectDir() const;
-    QStringList files() const;
     QString mainFile() const;
     QStringList customImportPaths() const;
 
@@ -92,10 +90,7 @@ private:
     void parseProject(RefreshOptions options);
 
     QmlImport m_defaultImport;
-    ProjectExplorer::Target *m_activeTarget = 0;
-
-    // plain format
-    QStringList m_files;
+    ProjectExplorer::Target *m_activeTarget = nullptr;
 
     QPointer<QmlProjectItem> m_projectItem;
 };