List/Tree Widget

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Revision as of 00:28, 10 January 2007 by FosterBrereton (Talk | contribs)

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(For the time being the focus will be on lists, not heirarchical trees.)

The tricky part of a list controller/view is that you have a controller/view on a sequence. You need to figure out:

  1. How to communicate requests for changes to the sequence
  2. What those requests are
  3. How to communicate a change in the visible portion of the sequence to the view

We assume the sequences in a list are disjoint.

Related Docs

Win32 Tree Control API Documentation (Tree View)

Carbon Tree Control API Documentation (Data Browser)


Assume for the time being that the model_type is simple:

 typedef std::string                   value_type;
 typedef std::vector<value_type>       model_type;
 typedef model_type::iterator          iterator;
 typedef std::pair<iterator, iterator> sequence_type;

Model API

 typedef boost::function<void (const value_type&)> monitor_value_callback_t;
 typedef boost::function<void (iterator who)> monitor_child_insert_callback_t;
 void insert(const value_type& what, iterator where);
 void monitor_child_insert(iterator parent, const monitor_child_insert_callback_t& how);
 void monitor_value(iterator where, const monitor_value_callback_t& how);
 void monitor_erase(...);
 void monitor_child_erase(...);

View API

 void set(iterator where, const value_type& value);
 void erase(iterator who);

Controller API

 typedef boost::function<void (const value_type&)> monitor_value_callback_t;
 void monitor(iterator who, const monitor_child_insert_callback_t& how);
 void erase(iterator who);