Holder

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Object Hierarchy:

Description:

Content:

Properties:

• public string description { owned get; set; }
• public Holder full_bind { owned get; set; }
• public Type g_type { get; set construct; }
• public string id { owned get; set; }
• public string name { owned get; set; }
• public bool not_null { get; set; }
• public Holder simple_bind { owned get; set; }
• public int source_column { get; set; }
• public DataModel source_model { owned get; set; }
• public bool validate_changes { get; set; }
  Defines if the "validate-change" signal gets emitted when the holder's value changes.

Static methods:

• public static Quark error_quark ()

Creation methods:

• public Holder (Type type)
  Creates a new holder of type type

Methods:

• public virtual void att_changed (string att_name, Value att_value)
• public Holder copy ()
  Copy constructor.
• public void force_invalid ()
  Forces a holder to be invalid; to set it valid again, a new value must be assigned to it using set_value or take_value.
• public void force_invalid_e (owned Error? error)
  Forces a holder to be invalid; to set it valid again, a new value must be assigned to it using set_value or take_value.
• public string get_alphanum_id ()
  Get an "encoded" version of this's name.
• public unowned Value? get_attribute (string attribute)
  Get the value associated to a named attribute.
• public unowned Holder get_bind ()
  Get the holder which makes this change its value when the holder's value is changed.
• public unowned Value? get_default_value ()
  Get the default value held into the holder.
• public Type get_g_type ()
• public unowned string get_id ()
  Get the ID of this.
• public bool get_not_null ()
  Get wether the holder can be NULL or not
• public unowned DataModel get_source_model (int col)
  If set_source_model has been used to provide a hint that this's value should be among the values contained in a column of a data model, then this method returns which data model, and if col is not null, then it is set to the restricting column as well.
• public unowned Value? get_value ()
  Get the value held into the holder.
• public string get_value_str (DataHandler? dh)
  Same functionality as get_value except that it returns the value as a string (the conversion is done using dh if not null, or the default data handler otherwise).
• public bool is_valid ()
  Get the validity of this (that is, of the value held by this)
• public bool is_valid_e () throws Error
  Get the validity of this (that is, of the value held by this)
• public void set_attribute (string attribute, Value value, DestroyNotify destroy)
  Set the value associated to a named attribute.
• public bool set_bind (Holder bind_to) throws Error
  Sets this to change when bind_to changes (and does not make bind_to change when this changes).
• public void set_default_value (Value value)
  Sets the default value within the holder.
• public void set_not_null (bool not_null)
  Sets if the holder can have a NULL value.
• public bool set_source_model (DataModel model, int col) throws Error
  Sets an hint that this's values should be restricted among the values contained in the col column of the model data model.
• public bool set_value (Value? value) throws Error
  Sets the value within the holder.
• public bool set_value_str (DataHandler dh, string value) throws Error
  Same functionality as set_value except that it uses a string representation of the value to set, which will be converted into a GValue first (using default data handler if dh is null).
• public bool set_value_to_default ()
  Set this's value to its default value.
• public Value? take_static_value (Value value, bool value_changed) throws Error
  Sets the const value within the holder.
• public bool take_value (owned Value value) throws Error
  Sets the value within the holder.
• public bool value_is_default ()
  Tells if this's current value is the default one.

Signals:

• public signal void attribute_changed (string att_name, Value att_value)
  Gets emitted when any holder's attribute has changed
• public virtual signal void changed ()
  Gets emitted when holder's value has changed
• public virtual signal void source_changed ()
  Gets emitted when the data model in which holder's values should be has changed
• public virtual signal Error validate_change (Value new_value)
  Gets emitted when holder is going to change its value.

Inherited Members: