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[Marco Trevisan (Treviño) <mail@xxxxxxxxx>]

** Changed in: unity (Ubuntu)
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/651479

Title:
  Implement row annotations for DeeModel

Status in Dee:
  Fix Released
Status in Unity:
  Fix Released
Status in “dee” package in Ubuntu:
  Fix Released
Status in “unity” package in Ubuntu:
  Fix Released

Bug description:
  It's a common pattern that model consumers needs to map each
  individual row to some internal data structure or value (fx. a
  widget). Currently this can only be achieved by maintaining a map of
  row iters to the data members which must then be kept in sync with the
  model.

  I propose we add a "Model Annotation API" ala:

  -------------------------------

  typedef guint DeeModelAnnotation;

  /**
   * dee_model_register_annotation:
   * @destroy: Callback to free annotation set on the model with
   *           dee_model_set_annotation(). Called when the row is
   *           removed, the annotation is cleared, or the model is
   *           finalized.
   *
   * Create a new annotation.
   *
   * Returns: A new annotation key that can be used to get and
   *          set annotation values
   */
  DeeModelAnnotation dee_model_register_annotation (GDestroyNotify destroy);

  void dee_model_set_annotation (DeeModel *model,
                                 DeeModelIter *row,
                                 DeeModelAnnotation anno,
                                 gpointer anno_value);

  gpointer dee_model_get_annotation (DeeModel *model,
                                     DeeModelIter *row,
                                     DeeModelAnnotation anno);

  void dee_model_clear_annotation (DeeModel *model,
                                   DeeModelIter *row,
                                   DeeModelAnnotation anno);

  -------------------------------

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