Resolved issue #382. Add 'Create from existing file' option in Tape,

Create/Edit.

--HG--
branch : develop

src/app/tape/tmainwindow.cpp

@@ -385,6 +385,28 @@ void TMainWindow::OpenTemplate()
     }
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void TMainWindow::CreateFromExisting()
+{
+    if (m == nullptr)
+    {
+        const QString filter = tr("Individual measurements (*.vit)");
+        //Use standard path to standard measurements
+        const QString pathTo = qApp->TapeSettings()->GetPathIndividualMeasurements();
+        const QString mPath = QFileDialog::getOpenFileName(this, tr("Select file"), pathTo, filter);
+
+        if (not mPath.isEmpty())
+        {
+            LoadFromExistingFile(mPath);
+        }
+    }
+    else
+    {
+        qApp->NewMainWindow();
+        qApp->MainWindow()->CreateFromExisting();
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void TMainWindow::Find(const QString &term)
 {
@@ -1557,6 +1579,7 @@ void TMainWindow::SetupMenu()
     connect(ui->actionOpenIndividual, &QAction::triggered, this, &TMainWindow::OpenIndividual);
     connect(ui->actionOpenStandard, &QAction::triggered, this, &TMainWindow::OpenStandard);
     connect(ui->actionOpenTemplate, &QAction::triggered, this, &TMainWindow::OpenTemplate);
+    connect(ui->actionCreateFromExisting, &QAction::triggered, this, &TMainWindow::CreateFromExisting);
 
     connect(ui->actionSave, &QAction::triggered, this, &TMainWindow::FileSave);
     ui->actionSave->setShortcuts(QKeySequence::Save);
@@ -2344,6 +2367,132 @@ void TMainWindow::UpdatePatternUnit()
     ui->tableWidget->selectRow(row);
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+bool TMainWindow::LoadFromExistingFile(const QString &path)
+{
+    if (m == nullptr)
+    {
+        if (not QFileInfo(path).exists())
+        {
+            qCCritical(tMainWindow, "%s", qUtf8Printable(tr("File '%1' doesn't exist!").arg(path)));
+            if (qApp->IsTestMode())
+            {
+                qApp->exit(V_EX_NOINPUT);
+            }
+            return false;
+        }
+
+        // Check if file already opened
+        QList<TMainWindow*>list = qApp->MainWindows();
+        for (int i = 0; i < list.size(); ++i)
+        {
+            if (list.at(i)->CurrentFile() == path)
+            {
+                list.at(i)->activateWindow();
+                close();
+                return false;
+            }
+        }
+
+        VlpCreateLock(lock, QFileInfo(path).fileName()+".lock");
+
+        if (not lock->IsLocked())
+        {
+            qCCritical(tMainWindow, "%s", qUtf8Printable(tr("This file already opened in another window.")));
+            if (qApp->IsTestMode())
+            {
+                qApp->exit(V_EX_NOINPUT);
+            }
+            return false;
+        }
+
+        try
+        {
+            data = new VContainer(qApp->TrVars(), &mUnit);
+
+            m = new VMeasurements(data);
+            m->setXMLContent(path);
+
+            mType = m->Type();
+
+            if (mType == MeasurementsType::Unknown)
+            {
+                VException e(tr("File has unknown format."));
+                throw e;
+            }
+
+            if (mType == MeasurementsType::Standard)
+            {
+                VException e(tr("Export standard measurements not supported."));
+                throw e;
+            }
+            else
+            {
+                VVITConverter converter(path);
+                converter.Convert();
+
+                VDomDocument::ValidateXML(VVITConverter::CurrentSchema, path);
+            }
+
+            m->setXMLContent(path);// Read again after conversion
+
+            if (not m->IsDefinedKnownNamesValid())
+            {
+                VException e(tr("File contains invalid known measurement(s)."));
+                throw e;
+            }
+
+            mUnit = m->MUnit();
+            pUnit = mUnit;
+
+            data->SetHeight(m->BaseHeight());
+            data->SetSize(m->BaseSize());
+
+            ui->labelToolTip->setVisible(false);
+            ui->tabWidget->setVisible(true);
+
+            InitWindow();
+
+            m->ClearForExport();
+            RefreshData();
+
+            if (ui->tableWidget->rowCount() > 0)
+            {
+                ui->tableWidget->selectRow(0);
+            }
+
+            lock.reset();// Now we can unlock the file
+
+            GUIReadOnly(m->ReadOnly()); // Keep last
+        }
+        catch (VException &e)
+        {
+            qCCritical(tMainWindow, "%s\n\n%s\n\n%s", qUtf8Printable(tr("File error.")),
+                       qUtf8Printable(e.ErrorMessage()), qUtf8Printable(e.DetailedInformation()));
+            ui->labelToolTip->setVisible(true);
+            ui->tabWidget->setVisible(false);
+            delete m;
+            m = nullptr;
+            delete data;
+            data = nullptr;
+            lock.reset();
+
+            if (qApp->IsTestMode())
+            {
+                qApp->exit(V_EX_NOINPUT);
+            }
+            return false;
+        }
+    }
+    else
+    {
+        qApp->NewMainWindow();
+        return qApp->MainWindow()->LoadFile(path);
+    }
+
+    return true;
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 void TMainWindow::SetDecimals()
 {

src/app/tape/tmainwindow.h

@@ -68,6 +68,7 @@ public slots:
     void OpenIndividual();
     void OpenStandard();
     void OpenTemplate();
+    void CreateFromExisting();
 
 protected:
     virtual void closeEvent(QCloseEvent *event) Q_DECL_OVERRIDE;
@@ -178,6 +179,8 @@ private:
     QStringList FilterMeasurements(const QStringList &mNew, const QStringList &mFilter);
 
     void UpdatePatternUnit();
+
+    bool LoadFromExistingFile(const QString &path);
 };
 
 #endif // TMAINWINDOW_H

src/app/tape/tmainwindow.ui

@@ -724,6 +724,7 @@
     <addaction name="actionOpenIndividual"/>
     <addaction name="actionOpenStandard"/>
     <addaction name="actionOpenTemplate"/>
+    <addaction name="actionCreateFromExisting"/>
     <addaction name="separator"/>
     <addaction name="actionSave"/>
     <addaction name="actionSaveAs"/>
@@ -958,6 +959,17 @@
     <string>Import from a pattern</string>
    </property>
   </action>
+  <action name="actionCreateFromExisting">
+   <property name="text">
+    <string>Create from existing ...</string>
+   </property>
+   <property name="toolTip">
+    <string>Create from existing file</string>
+   </property>
+   <property name="shortcut">
+    <string notr="true"/>
+   </property>
+  </action>
  </widget>
  <layoutdefault spacing="6" margin="11"/>
  <resources>

src/libs/qmuparser/qmuparser.pro

@@ -39,7 +39,7 @@ OBJECTS_DIR = obj
 
 include(qmuparser.pri)
 
-VERSION = 2.3.0
+VERSION = 2.4.0
 
 # Set "make install" command for Unix-like systems.
 unix:!macx{

src/libs/qmuparser/qmutokenparser.cpp

@@ -73,10 +73,14 @@ QmuTokenParser::~QmuTokenParser()
  * Work only with expressions in internal (C) locale.
  * @param formula expression for test
  * @return true if fomula has single number
- * @throw qmu::QmuParserError if expression is incorrect. Has bad separator.
  */
 bool QmuTokenParser::IsSingle(const QString &formula)
 {
+    if (formula.isEmpty())
+    {
+        return false;// if don't know say no
+    }
+
     QmuTokenParser *cal = new QmuTokenParser();
 
     // Parser doesn't know any variable on this stage. So, we just use variable factory that for each unknown
@@ -84,8 +88,16 @@ bool QmuTokenParser::IsSingle(const QString &formula)
     cal->SetVarFactory(AddVariable, cal);
     cal->SetSepForEval();//Reset separators options
 
-    cal->SetExpr(formula);
+    try
-    cal->Eval();// We don't need save result, only parse formula
+    {
+        cal->SetExpr(formula);
+        cal->Eval();// We don't need save result, only parse formula
+    }
+    catch (const qmu::QmuParserError &e)
+    {
+        Q_UNUSED(e)
+        return false;// something wrong with formula, say no
+    }
 
     QMap<int, QString> tokens = cal->GetTokens();// Tokens (variables, measurements)
     const QMap<int, QString> numbers = cal->GetNumbers();// All numbers in expression

src/libs/vformat/vmeasurements.cpp

@@ -31,6 +31,7 @@
 #include "../ifc/xml/vvitconverter.h"
 #include "../ifc/exception/vexceptionemptyparameter.h"
 #include "../vpatterndb/calculator.h"
+#include "../qmuparser/qmutokenparser.h"
 
 const QString VMeasurements::TagVST              = QStringLiteral("vst");
 const QString VMeasurements::TagVIT              = QStringLiteral("vit");
@@ -278,6 +279,24 @@ void VMeasurements::ReadMeasurements() const
     delete tempData;
 }
 
+//---------------------------------------------------------------------------------------------------------------------
+void VMeasurements::ClearForExport()
+{
+    const QDomNodeList list = elementsByTagName(TagMeasurement);
+
+    for (int i=0; i < list.size(); ++i)
+    {
+        QDomElement domElement = list.at(i).toElement();
+        if (domElement.isNull() == false)
+        {
+            if (qmu::QmuTokenParser::IsSingle(domElement.attribute(AttrValue)))
+            {
+                SetAttribute(domElement, AttrValue, QString("0"));
+            }
+        }
+    }
+}
+
 //---------------------------------------------------------------------------------------------------------------------
 MeasurementsType VMeasurements::Type() const
 {

src/libs/vformat/vmeasurements.h

@@ -54,6 +54,7 @@ public:
     void MoveBottom(const QString &name);
 
     void ReadMeasurements() const;
+    void ClearForExport();
 
     MeasurementsType Type() const;
     Unit MUnit() const;

src/test/ValentinaTest/tst_qmutokenparser.cpp

@@ -49,6 +49,9 @@ void TST_QmuTokenParser::IsSingle_data()
     QTest::newRow("Digit and variable") << "2+a" << false;
     QTest::newRow("One variable twice") << "a+a" << false;
     QTest::newRow("Two variables") << "a+b" << false;
+    QTest::newRow("Empty string") << "" << false;
+    QTest::newRow("Several spaces") << "   " << false;
+    QTest::newRow("Invalid formula") << "2*)))" << false;
 }
 
 //---------------------------------------------------------------------------------------------------------------------