//create a new CurAddTo (even though their already might be one)
//(needed for edge tool)
protected virtual bool AddNewCurAddTo()
{
// find tikzpicture
Tikz_Picture tpict = overlay.ParseTree.GetTikzPicture();
if (tpict == null)
{
return(false);
}
Parser.Tikz_Path tp = new Parser.Tikz_Path();
tp.starttag = @"\draw ";
tp.endtag = ";";
if (overlay.EdgeStyle != "")
{
Parser.Tikz_Options topt = new Parser.Tikz_Options();
topt.starttag = "[";
topt.endtag = "]";
Parser.Tikz_Option to = new Parser.Tikz_Option();
to.type = Parser.Tikz_OptionType.key;
to.key = overlay.EdgeStyle;
topt.AddOption(to);
tp.AddChild(topt);
tp.options = topt;
}
if (overlay.CurEditing != null)
{
overlay.CurEditing.tikzitem.AddChild(tp);
overlay.CurEditing.tikzitem.AddChild(new Parser.Tikz_Something("\r\n"));
}
else
{
tpict.AddChild(tp);
tpict.AddChild(new Parser.Tikz_Something("\r\n"));
}
curAddTo = tp;
return(true);
}
protected virtual bool EnsureCurAddToExists(out bool created)
{
created = false;
if (overlay.ParseTree == null)
{
return(false);
}
// find tikzpicture
Parser.Tikz_Picture tpict = overlay.ParseTree.GetTikzPicture();
if (tpict == null)
{
if (overlay.AllowEditing)
{
// add a new tikzpicture
Tikz_Picture tp = new Tikz_Picture();
tp.starttag = "\\begin{tikzpicture}";
tp.AddChild(new Tikz_Something("\r\n"));
tp.endtag = "\\end{tikzpicture}";
//overlay.BeginUpdate();
overlay.ParseTree.AddChild(tp);
tp.UpdateText();
//overlay.EndUpdate();
}
else
{
return(false);
}
}
if (curAddTo == null || !(curAddTo is Parser.Tikz_Path))
{
created = AddNewCurAddTo();
}
return(true);
}
protected bool EnsureParseTreeExists()
{
// Try to create a new ParseTree
if (overlay.ParseTree == null)
{
// TODO
return(false);
//TryCreateNew(this, out lret);
if (overlay.AllowEditing)
{
// create a new parsetree
Tikz_ParseTree t = new Tikz_ParseTree();
Tikz_Picture tp = new Tikz_Picture();
tp.starttag = "\\begin{tikzpicture}";
tp.AddChild(new Tikz_Something("\r\n"));
tp.endtag = "\\end{tikzpicture}";
overlay.BeginUpdate();
// overlay.ParseTree = t;
t.AddChild(tp);
tp.UpdateText();
overlay.EndUpdate();
return(true);
}
else
{
GlobalUI.ShowMessageBox("Parse tree could not be created. Please correct all parser errors in the code and try again.", "Function not available", MessageBoxButton.OK, MessageBoxImage.Exclamation);
return(false);
}
}
else
{
return(true);
}
}