# HG changeset patch
# User Chris Cannam
# Date 1305113035 -3600
# Node ID 2c827ac7c8e72e5a3c867297594bc54fa8426b90
# Parent  9d50c42d7ca09fa3fe6b582276fb119151c6e49c
When saving a session as a template, use the silent.wav placeholder instead of the main model

diff -r 9d50c42d7ca0 -r 2c827ac7c8e7 framework/Document.cpp
--- a/framework/Document.cpp	Tue May 10 19:37:45 2011 +0100
+++ b/framework/Document.cpp	Wed May 11 12:23:55 2011 +0100
@@ -1072,12 +1072,29 @@
 void
 Document::toXml(QTextStream &out, QString indent, QString extraAttributes) const
 {
+    toXml(out, indent, extraAttributes, false);
+}
+
+void
+Document::toXmlAsTemplate(QTextStream &out, QString indent, QString extraAttributes) const
+{
+    toXml(out, indent, extraAttributes, true);
+}
+
+void
+Document::toXml(QTextStream &out, QString indent, QString extraAttributes,
+                bool asTemplate) const
+{
     out << indent + QString("<data%1%2>\n")
         .arg(extraAttributes == "" ? "" : " ").arg(extraAttributes);
 
     if (m_mainModel) {
 
-	m_mainModel->toXml(out, indent + "  ", "mainModel=\"true\"");
+        if (asTemplate) {
+            writePlaceholderMainModel(out, indent + "  ");
+        } else {
+            m_mainModel->toXml(out, indent + "  ", "mainModel=\"true\"");
+        }
 
         PlayParameters *playParameters =
             PlayParameterRepository::getInstance()->getPlayParameters(m_mainModel);
@@ -1189,6 +1206,15 @@
 }
 
 void
+Document::writePlaceholderMainModel(QTextStream &out, QString indent) const
+{
+    out << indent;
+    out << QString("<model id=\"%1\" name=\"placeholder\" sampleRate=\"%2\" type=\"wavefile\" file=\":samples/silent.wav\" mainModel=\"true\"/>\n")
+        .arg(getObjectExportId(m_mainModel))
+        .arg(m_mainModel->getSampleRate());
+}
+
+void
 Document::writeBackwardCompatibleDerivation(QTextStream &out, QString indent,
                                             Model *targetModel,
                                             const ModelRecord &rec) const
diff -r 9d50c42d7ca0 -r 2c827ac7c8e7 framework/Document.h
--- a/framework/Document.h	Tue May 10 19:37:45 2011 +0100
+++ b/framework/Document.h	Wed May 11 12:23:55 2011 +0100
@@ -214,6 +214,7 @@
     void alignModels();
 
     void toXml(QTextStream &, QString indent, QString extraAttributes) const;
+    void toXmlAsTemplate(QTextStream &, QString indent, QString extraAttributes) const;
 
 signals:
     void layerAdded(Layer *);
@@ -334,6 +335,9 @@
 
     static TransformId getAlignmentTransformName();
     
+    void toXml(QTextStream &, QString, QString, bool asTemplate) const;
+    void writePlaceholderMainModel(QTextStream &, QString) const;
+
     /**
      * And these are the layers.  We also control the lifespans of
      * these (usually through the commands used to add and remove them).
diff -r 9d50c42d7ca0 -r 2c827ac7c8e7 framework/MainWindowBase.cpp
--- a/framework/MainWindowBase.cpp	Tue May 10 19:37:45 2011 +0100
+++ b/framework/MainWindowBase.cpp	Wed May 11 12:23:55 2011 +0100
@@ -1961,7 +1961,7 @@
         QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
 
         QTextStream out(&bzFile);
-        toXml(out);
+        toXml(out, false);
         out.flush();
 
         QApplication::restoreOverrideCursor();
@@ -2006,7 +2006,7 @@
         QApplication::setOverrideCursor(QCursor(Qt::WaitCursor));
 
         QTextStream out(&file);
-        toXml(out);
+        toXml(out, true);
         out.flush();
 
         QApplication::restoreOverrideCursor();
@@ -2025,7 +2025,7 @@
 }
 
 void
-MainWindowBase::toXml(QTextStream &out)
+MainWindowBase::toXml(QTextStream &out, bool asTemplate)
 {
     QString indent("  ");
 
@@ -2033,7 +2033,11 @@
     out << "<!DOCTYPE sonic-visualiser>\n";
     out << "<sv>\n";
 
-    m_document->toXml(out, "", "");
+    if (asTemplate) {
+        m_document->toXmlAsTemplate(out, "", "");
+    } else {
+        m_document->toXml(out, "", "");
+    }
 
     out << "<display>\n";
 
diff -r 9d50c42d7ca0 -r 2c827ac7c8e7 framework/MainWindowBase.h
--- a/framework/MainWindowBase.h	Tue May 10 19:37:45 2011 +0100
+++ b/framework/MainWindowBase.h	Wed May 11 12:23:55 2011 +0100
@@ -411,7 +411,7 @@
 
     virtual void connectLayerEditDialog(ModelDataTableDialog *dialog);
 
-    virtual void toXml(QTextStream &stream);
+    virtual void toXml(QTextStream &stream, bool asTemplate);
 };