File: TemplateRefinementContext.hh

package info (click to toggle)
gtkmathview 0.7.7-1
  • links: PTS
  • area: main
  • in suites: etch, etch-m68k
  • size: 8,388 kB
  • ctags: 7,020
  • sloc: cpp: 51,304; xml: 12,643; sh: 8,996; makefile: 1,593; ansic: 1,149; perl: 88
file content (82 lines) | stat: -rw-r--r-- 2,321 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
// Copyright (C) 2000-2003, Luca Padovani <luca.padovani@cs.unibo.it>.
//
// This file is part of GtkMathView, a Gtk widget for MathML.
// 
// GtkMathView is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// GtkMathView is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with GtkMathView; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
// 
// For details, see the GtkMathView World-Wide-Web page,
// http://helm.cs.unibo.it/mml-widget, or send a mail to
// <luca.padovani@cs.unibo.it>

#ifndef __TemplateRefinementContext_hh__
#define __TemplateRefinementContext_hh__

#include <list>

#include "Attribute.hh"
#include "AttributeSet.hh"

template <class Model>
class TemplateRefinementContext
{
public:
  TemplateRefinementContext(void) { }

  SmartPtr<Attribute>
  get(const class AttributeSignature& sig) const
  {
    for (typename std::list<Context>::const_iterator p = context.begin(); p != context.end(); p++)
      {
	const Context& c = *p;
	
	if (SmartPtr<Attribute> attr = c.attributes->get(ATTRIBUTE_ID_OF_SIGNATURE(sig)))
	  return attr;
	else if (Model::hasAttribute(c.elem, sig.name))
	  {
	    SmartPtr<Attribute> attr = Attribute::create(sig, Model::getAttribute(c.elem, sig.name));
	    c.attributes->set(attr);
	    return attr;
	  }
      }
    
    return 0;
  }
  
  void
  push(const typename Model::Element& elem)
  {
    assert(elem);
    context.push_front(Context(elem, AttributeSet::create()));
  }

  void pop(void)
  {
    assert(!context.empty());
    context.pop_front();
  }

private:
  struct Context
  {
    Context(const typename Model::Element& el, const SmartPtr<AttributeSet> al) : elem(el), attributes(al) { }

    typename Model::Element elem;
    SmartPtr<AttributeSet> attributes;
  };

  std::list<Context> context;
};

#endif // __TemplateRefinementContext_hh__