Set the title when adding a chart

Fixes #967

src/GcWindowRegistry.cpp

@@ -113,6 +113,15 @@ QStringList windowsForType(int type)
     return returning;
 }
 
+QString
+GcWindowRegistry::title(GcWinID id)
+{
+    for(int i=0; GcWindows[i].relevance; i++) {
+        if (GcWindows[i].relevance && GcWindows[i].id == id) 
+            return GcWindows[i].name;
+    }
+}
+
 QList<GcWinID> idsForType(int type)
 {
     QList<GcWinID> returning;

src/GcWindowRegistry.h

@@ -84,6 +84,7 @@ class GcWindowRegistry {
     static GcWindow *newGcWindow(GcWinID id, Context *context);
     static QStringList windowsForType(int type);
     static QList<GcWinID> idsForType(int type);
+    static QString title(GcWinID id);
 };
 
 extern GcWindowRegistry* GcWindows;

src/HomeWindow.cpp

@@ -1041,6 +1041,7 @@ GcWindowDialog::GcWindowDialog(GcWinID type, Context *context, GcWindow **here)
 
     title = new QLineEdit(this);
     chartLayout->addWidget(title);
+    title->setText(GcWindowRegistry::title(type));
 
     win = GcWindowRegistry::newGcWindow(type, context);
     chartLayout->addWidget(win);