+ implement auto-save function for documents

src/Mod/Sandbox/App/DocumentThread.cpp

@@ -31,6 +31,7 @@
 
 #include <Base/Console.h>
 #include <Base/Sequencer.h>
+#include <Base/Writer.h>
 #include <Base/Interpreter.h>
 #include <App/Application.h>
 #include <App/Document.h>
@@ -229,3 +230,41 @@ void DocumentTestThread::run()
     dp.recompute();
     op.execute(Callable<SandboxObject,&SandboxObject::resetValue>(obj));
 }
+
+
+DocumentSaverThread::DocumentSaverThread(App::Document* doc, QObject* parent)
+  : QThread(parent), doc(doc)
+{
+}
+
+DocumentSaverThread::~DocumentSaverThread()
+{
+}
+
+void DocumentSaverThread::run()
+{
+    std::string uuid = Base::Uuid::createUuid();
+    std::string fn = doc->TransientDir.getValue();
+    fn += "/";
+    fn += uuid;
+    fn += ".autosave";
+    Base::FileInfo tmp(fn);
+
+    // open extra scope to close ZipWriter properly
+    {
+        Base::ofstream file(tmp, std::ios::out | std::ios::binary);
+        Base::ZipWriter writer(file);
+
+        writer.setComment("FreeCAD Document");
+        writer.setLevel(0);
+        writer.putNextEntry("Document.xml");
+
+        doc->Save(writer);
+
+        // Special handling for Gui document.
+        doc->signalSaveDocument(writer);
+
+        // write additional files
+        writer.writeFiles();
+    }
+}

src/Mod/Sandbox/App/DocumentThread.h

@@ -113,6 +113,19 @@ protected:
     void run();
 };
 
+class SandboxAppExport DocumentSaverThread : public QThread
+{
+public:
+    DocumentSaverThread(App::Document* doc, QObject* parent=0);
+    ~DocumentSaverThread();
+
+protected:
+    void run();
+
+private:
+    App::Document* doc;
+};
+
 }
 
 #endif // SANDBOX_DOCUMENTTHREAD_H

src/Mod/Sandbox/Gui/Command.cpp

@@ -130,6 +130,34 @@ void CmdSandboxDocumentTestThread::activated(int iMsg)
 
 // -------------------------------------------------------------------------------
 
+DEF_STD_CMD_A(CmdSandboxDocumentSaveThread);
+
+CmdSandboxDocumentSaveThread::CmdSandboxDocumentSaveThread()
+  :Command("Sandbox_SaveThread")
+{
+    sAppModule    = "Sandbox";
+    sGroup        = QT_TR_NOOP("Sandbox");
+    sMenuText     = QT_TR_NOOP("Save thread");
+    sToolTipText  = QT_TR_NOOP("Sandbox save function");
+    sWhatsThis    = QT_TR_NOOP("Sandbox save function");
+    sStatusTip    = QT_TR_NOOP("Sandbox save function");
+}
+
+void CmdSandboxDocumentSaveThread::activated(int iMsg)
+{
+    App::Document* doc = App::GetApplication().getActiveDocument();
+    Sandbox::DocumentSaverThread* dt = new Sandbox::DocumentSaverThread(doc);
+    QObject::connect(dt, SIGNAL(finished()), dt, SLOT(deleteLater()));
+    dt->start();
+}
+
+bool CmdSandboxDocumentSaveThread::isActive()
+{
+    return App::GetApplication().getActiveDocument() != 0;
+}
+
+// -------------------------------------------------------------------------------
+
 DEF_STD_CMD(CmdSandboxDocThreadWithSeq);
 
 CmdSandboxDocThreadWithSeq::CmdSandboxDocThreadWithSeq()
@@ -1410,6 +1438,7 @@ void CreateSandboxCommands(void)
     Gui::CommandManager &rcCmdMgr = Gui::Application::Instance->commandManager();
     rcCmdMgr.addCommand(new CmdSandboxDocumentThread());
     rcCmdMgr.addCommand(new CmdSandboxDocumentTestThread());
+    rcCmdMgr.addCommand(new CmdSandboxDocumentSaveThread());
     rcCmdMgr.addCommand(new CmdSandboxDocThreadWithSeq());
     rcCmdMgr.addCommand(new CmdSandboxDocThreadBusy());
     rcCmdMgr.addCommand(new CmdSandboxDocumentNoThread());

src/Mod/Sandbox/Gui/Workbench.cpp

@@ -84,7 +84,8 @@ Gui::MenuItem* Workbench::setupMenuBar() const
     *threads << "Sandbox_PythonLockThread" << "Sandbox_NolockPython"
              << "Sandbox_PyQtThread" << "Sandbox_PythonThread" << "Sandbox_PythonMainThread";
     test->setCommand("Threads");
-    *test << "Sandbox_Thread" << "Sandbox_TestThread" << "Sandbox_WorkerThread" << "Sandbox_SeqThread"
+    *test << "Sandbox_Thread" << "Sandbox_TestThread" << "Sandbox_SaveThread"
+          << "Sandbox_WorkerThread" << "Sandbox_SeqThread"
           << "Sandbox_BlockThread" << "Sandbox_NoThread" << threads << "Separator"
           << "Sandbox_Dialog" << "Sandbox_FileDialog";
     Gui::MenuItem* misc = new Gui::MenuItem;