moved loading to a separate thread

apps/opencs/CMakeLists.txt

@@ -5,7 +5,7 @@ opencs_units (. editor)
 set (CMAKE_BUILD_TYPE DEBUG)
 
 opencs_units (model/doc
-    document operation saving documentmanager
+    document operation saving documentmanager loader
     )
 
 opencs_units_noqt (model/doc

apps/opencs/model/doc/document.cpp

@@ -2219,68 +2219,32 @@ void CSMDoc::Document::createBase()
     }
 }
 
-CSMDoc::Document::Document (const Files::ConfigurationManager& configuration, const std::vector< boost::filesystem::path >& files, const boost::filesystem::path& savePath, const boost::filesystem::path& resDir, bool new_)
-    : mSavePath (savePath), mContentFiles (files), mTools (mData), mResDir(resDir),
-      mProjectPath ((configuration.getUserDataPath() / "projects") /
-                    (savePath.filename().string() + ".project")),
-      mSaving (*this, mProjectPath)
+CSMDoc::Document::Document (const Files::ConfigurationManager& configuration,
+    const std::vector< boost::filesystem::path >& files,
+    const boost::filesystem::path& savePath, const boost::filesystem::path& resDir)
+: mSavePath (savePath), mContentFiles (files), mTools (mData), mResDir(resDir),
+  mProjectPath ((configuration.getUserDataPath() / "projects") /
+  (savePath.filename().string() + ".project")),
+  mSaving (*this, mProjectPath)
 {
-    if (files.empty())
+    if (mContentFiles.empty())
         throw std::runtime_error ("Empty content file sequence");
 
-    if (new_ && files.size()==1)
-        createBase();
-    else
-    {
-        std::vector<boost::filesystem::path>::const_iterator end = files.end();
-
-        if (new_)
-            --end;
-
-        load (files.begin(), end, !new_);
-    }
-
-    if (new_)
-    {
-        mData.setDescription ("");
-        mData.setAuthor ("");
-    }
-
-    bool filtersFound = false;
-
-    if (boost::filesystem::exists (mProjectPath))
-    {
-        filtersFound = true;
-    }
-    else
+    if (!boost::filesystem::exists (mProjectPath))
     {
         boost::filesystem::path locCustomFiltersPath (configuration.getUserDataPath());
         locCustomFiltersPath /= "defaultfilters";
 
-        if (boost::filesystem::exists(locCustomFiltersPath))
+        if (boost::filesystem::exists (locCustomFiltersPath))
         {
             boost::filesystem::copy_file (locCustomFiltersPath, mProjectPath);
-            filtersFound = true;
         }
         else
         {
-            boost::filesystem::path filters(mResDir);
-            filters /= "defaultfilters";
-
-            if (boost::filesystem::exists(filters))
-            {
-                boost::filesystem::copy_file(filters, mProjectPath);
-                filtersFound = true;
-            }
+            boost::filesystem::copy_file (mResDir / "defaultfilters", mProjectPath);
         }
     }
 
-    if (filtersFound)
-        getData().loadFile (mProjectPath, false, true);
-
-    addOptionalGmsts();
-    addOptionalGlobals();
-
     connect (&mUndoStack, SIGNAL (cleanChanged (bool)), this, SLOT (modificationStateChanged (bool)));
 
     connect (&mTools, SIGNAL (progress (int, int, int)), this, SLOT (progress (int, int, int)));
@@ -2289,13 +2253,39 @@ CSMDoc::Document::Document (const Files::ConfigurationManager& configuration, co
     connect (&mSaving, SIGNAL (progress (int, int, int)), this, SLOT (progress (int, int, int)));
     connect (&mSaving, SIGNAL (done (int)), this, SLOT (operationDone (int)));
     connect (&mSaving, SIGNAL (reportMessage (const QString&, int)),
-             this, SLOT (reportMessage (const QString&, int)));
+        this, SLOT (reportMessage (const QString&, int)));
 }
 
 CSMDoc::Document::~Document()
 {
 }
 
+void CSMDoc::Document::setupData (bool new_)
+{
+    if (new_ && mContentFiles.size()==1)
+        createBase();
+    else
+    {
+        std::vector<boost::filesystem::path>::const_iterator end = mContentFiles.end();
+
+        if (new_)
+            --end;
+
+        load (mContentFiles.begin(), end, !new_);
+    }
+
+    if (new_)
+    {
+        mData.setDescription ("");
+        mData.setAuthor ("");
+    }
+
+    getData().loadFile (mProjectPath, false, true);
+
+    addOptionalGmsts();
+    addOptionalGlobals();
+}
+
 QUndoStack& CSMDoc::Document::getUndoStack()
 {
     return mUndoStack;

apps/opencs/model/doc/document.hpp

@@ -72,12 +72,13 @@ namespace CSMDoc
         public:
 
             Document (const Files::ConfigurationManager& configuration,
-                      const std::vector< boost::filesystem::path >& files,
-                      const boost::filesystem::path& savePath,
-                      const boost::filesystem::path& resDir, bool new_);
+                const std::vector< boost::filesystem::path >& files,
+                const boost::filesystem::path& savePath, const boost::filesystem::path& resDir);
 
             ~Document();
 
+            void setupData (bool new_);
+
             QUndoStack& getUndoStack();
 
             int getState() const;

apps/opencs/model/doc/documentmanager.cpp

@@ -19,10 +19,24 @@ CSMDoc::DocumentManager::DocumentManager (const Files::ConfigurationManager& con
 
     if (!boost::filesystem::is_directory (projectPath))
         boost::filesystem::create_directories (projectPath);
+
+    mLoader.moveToThread (&mLoaderThread);
+    mLoaderThread.start();
+
+    connect (&mLoader, SIGNAL (documentLoaded (Document *)),
+        this, SLOT (documentLoaded (Document *)));
+    connect (&mLoader, SIGNAL (documentNotLoaded (Document *, const std::string&)),
+        this, SLOT (documentNotLoaded (Document *, const std::string&)));
+    connect (this, SIGNAL (loadRequest (Document *, bool)),
+        &mLoader, SLOT (loadDocument (Document *, bool)));
 }
 
 CSMDoc::DocumentManager::~DocumentManager()
 {
+    mLoaderThread.quit();
+    mLoader.hasThingsToDo().wakeAll();
+    mLoaderThread.wait();
+
     for (std::vector<Document *>::iterator iter (mDocuments.begin()); iter!=mDocuments.end(); ++iter)
         delete *iter;
 }
@@ -30,11 +44,13 @@ CSMDoc::DocumentManager::~DocumentManager()
 void CSMDoc::DocumentManager::addDocument (const std::vector<boost::filesystem::path>& files, const boost::filesystem::path& savePath,
     bool new_)
 {
-    Document *document = new Document (mConfiguration, files, savePath, mResDir, new_);
+    Document *document = new Document (mConfiguration, files, savePath, mResDir);
 
     mDocuments.push_back (document);
 
-    emit documentAdded (document);
+    emit loadRequest (document, new_);
+
+    mLoader.hasThingsToDo().wakeAll();
 }
 
 bool CSMDoc::DocumentManager::removeDocument (Document *document)
@@ -54,3 +70,15 @@ void CSMDoc::DocumentManager::setResourceDir (const boost::filesystem::path& par
 {
     mResDir = boost::filesystem::system_complete(parResDir);
 }
+
+void CSMDoc::DocumentManager::documentLoaded (Document *document)
+{
+    emit documentAdded (document);
+}
+
+void CSMDoc::DocumentManager::documentNotLoaded (Document *document, const std::string& error)
+{
+    removeDocument (document);
+    /// \todo report error
+    /// \todo handle removeDocument returning true
+}

apps/opencs/model/doc/documentmanager.hpp

@@ -7,6 +7,9 @@
 #include <boost/filesystem/path.hpp>
 
 #include <QObject>
+#include <QThread>
+
+#include "loader.hpp"
 
 namespace Files
 {
@@ -23,6 +26,8 @@ namespace CSMDoc
 
             std::vector<Document *> mDocuments;
             const Files::ConfigurationManager& mConfiguration;
+            QThread mLoaderThread;
+            Loader mLoader;
 
             DocumentManager (const DocumentManager&);
             DocumentManager& operator= (const DocumentManager&);
@@ -47,9 +52,20 @@ namespace CSMDoc
 
 	    boost::filesystem::path mResDir;
 
+        private slots:
+
+            void documentLoaded (Document *document);
+            ///< The ownership of \a document is not transferred.
+
+            void documentNotLoaded (Document *document, const std::string& error);
+            ///< Document load has been interrupted either because of a call to abortLoading
+            /// or a problem during loading). In the former case error will be an empty string.
+
         signals:
 
             void documentAdded (CSMDoc::Document *document);
+
+            void loadRequest (Document *document, bool _new);
     };
 }
 

apps/opencs/model/doc/loader.cpp

@@ -0,0 +1,66 @@
+
+#include "loader.hpp"
+
+#include <QTimer>
+
+#include "document.hpp"
+
+CSMDoc::Loader::Loader()
+{
+    QTimer *timer = new QTimer (this);
+
+    connect (timer, SIGNAL (timeout()), this, SLOT (load()));
+    timer->start (1000);
+}
+
+QWaitCondition& CSMDoc::Loader::hasThingsToDo()
+{
+    return mThingsToDo;
+}
+
+void CSMDoc::Loader::load()
+{
+    if (mDocuments.empty())
+    {
+        mMutex.lock();
+        mThingsToDo.wait (&mMutex);
+        mMutex.unlock();
+        return;
+    }
+
+    std::vector<std::pair<Document *, bool> >::iterator iter = mDocuments.begin();
+
+    Document *document = iter->first;
+    bool new_ = iter->second;
+
+    mDocuments.erase (iter);
+
+    try
+    {
+        document->setupData (new_);
+        emit documentLoaded (document);
+    }
+    catch (const std::exception& e)
+    {
+        emit documentNotLoaded (document, e.what());
+    }
+}
+
+void CSMDoc::Loader::loadDocument (Document *document, bool new_)
+{
+    mDocuments.push_back (std::make_pair (document, new_));
+}
+
+void CSMDoc::Loader::abortLoading (Document *document)
+{
+    for (std::vector<std::pair<Document *, bool> >::iterator iter = mDocuments.begin();
+        iter!=mDocuments.end(); ++iter)
+    {
+        if (iter->first==document)
+        {
+            mDocuments.erase (iter);
+            emit documentNotLoaded (document, "");
+            break;
+        }
+    }
+}

apps/opencs/model/doc/loader.hpp

@@ -0,0 +1,55 @@
+#ifndef CSM_DOC_LOADER_H
+#define CSM_DOC_LOADER_H
+
+#include <vector>
+
+#include <QObject>
+#include <QMutex>
+#include <QWaitCondition>
+
+namespace CSMDoc
+{
+    class Document;
+
+    class Loader : public QObject
+    {
+            Q_OBJECT
+
+            QMutex mMutex;
+            QWaitCondition mThingsToDo;
+            std::vector<std::pair<Document *, bool> > mDocuments;
+
+        public:
+
+            Loader();
+
+            QWaitCondition& hasThingsToDo();
+
+        private slots:
+
+            void load();
+
+        public slots:
+
+            void loadDocument (Document *document, bool new_);
+            ///< The ownership of \a document is not transferred.
+            /// \param new_ Do not load the last content file in the files list specified in
+            /// \a document and instead create it in an appropriate way.
+
+            void abortLoading (Document *document);
+            ///< Abort loading \a docuemnt (ignored if \a document has already finished being
+            /// loaded). Will result in a documentNotLoaded signal, once the Loader has finished
+            /// cleaning up.
+
+        signals:
+
+            void documentLoaded (Document *document);
+            ///< The ownership of \a document is not transferred.
+
+            void documentNotLoaded (Document *document, const std::string& error);
+            ///< Document load has been interrupted either because of a call to abortLoading
+            /// or a problem during loading). In the former case error will be an empty string.
+    };
+}
+
+#endif