Public Member Functions | Static Public Member Functions
efl::model::base Struct Reference

Class base. More...

Public Member Functions

 base (Eo *eo)
 Eo Constructor. More...
 
 base (std::nullptr_t)
 nullptr_t Constructor. More...
 
 base (base const &other)
 Copy Constructor.
 
void load () const
 Load emodel. More...
 
void unload () const
 Unload emodel. More...
 
void properties_load () const
 Properties emodel load. More...
 
void children_load () const
 Children emodel load. More...
 
::efl::eo::concrete child_add () const
 Add a new child. More...
 
Efl_Model_Load_Status child_del (::efl::eo::concrete child_) const
 Remove a child. More...
 
Efl_Model_Load_Status load_status_get () const
 Get a load emodel current status. More...
 
Efl_Model_Load_Status properties_get (Eina_Array *const *properties_) const
 Get properties from model. More...
 
Efl_Model_Load_Status property_get (::efl::eina::string_view property_, const Eina_Value **value_) const
 Retrieve the value of a given property name. More...
 
Efl_Model_Load_Status property_set (::efl::eina::string_view property_, const Eina_Value *value_) const
 Set a property value of a given property name. More...
 
Efl_Model_Load_Status children_slice_get (unsigned start_, unsigned count_, Eina_Accessor **children_accessor_) const
 Get children slice OR full range. More...
 
Efl_Model_Load_Status children_count_get (unsigned *children_count_) const
 Get children count. More...
 
template<typename F >
::efl::eo::signal_connection callback_child_added_add (F &&callback_,::efl::eo::callback_priority priority_=::efl::eo::callback_priorities::default_)
 Event dispatched when new child is added.
 
template<typename T >
void callback_child_added_call (T *info)
 Event dispatched when new child is added.
 
template<typename F >
::efl::eo::signal_connection callback_child_removed_add (F &&callback_,::efl::eo::callback_priority priority_=::efl::eo::callback_priorities::default_)
 Event dispatched when child is removed.
 
template<typename T >
void callback_child_removed_call (T *info)
 Event dispatched when child is removed.
 
template<typename F >
::efl::eo::signal_connection callback_children_count_changed_add (F &&callback_,::efl::eo::callback_priority priority_=::efl::eo::callback_priorities::default_)
 Event dispatched when children count is finished.
 
template<typename T >
void callback_children_count_changed_call (T *info)
 Event dispatched when children count is finished.
 
template<typename F >
::efl::eo::signal_connection callback_load_status_add (F &&callback_,::efl::eo::callback_priority priority_=::efl::eo::callback_priorities::default_)
 Event dispatch when load status changes.
 
template<typename T >
void callback_load_status_call (T *info)
 Event dispatch when load status changes.
 
template<typename F >
::efl::eo::signal_connection callback_properties_changed_add (F &&callback_,::efl::eo::callback_priority priority_=::efl::eo::callback_priorities::default_)
 Event dispatched when properties list is available.
 
template<typename T >
void callback_properties_changed_call (T *info)
 Event dispatched when properties list is available.
 
 base (::efl::eo::parent_type _p)
 Constructs a new efl::model::base object. More...
 
- Public Member Functions inherited from efl::eo::concrete
 concrete (Eo *eo)
 Class constructor. More...
 
 concrete ()
 Default constructor. More...
 
 ~concrete ()
 Class destructor.
 
 concrete (concrete const &other)
 
 concrete (concrete &&other)
 
concreteoperator= (concrete const &other)
 Assignment operator.
 
concreteoperator= (concrete &&other)
 
Eo_eo_ptr () const
 Return a pointer to the EO Object stored in this instance. More...
 
Eo_release ()
 Releases the reference from this concrete object and return the pointer to the EO Object stored in this instance. More...
 
void _reset (Eo *_ptr=nullptr)
 Reset the current pointer to reference a new Eo object.
 
int ref_get () const
 Get the reference count of this object. More...
 
void parent_set (concrete parent)
 Set the parent of this object. More...
 
eina::optional< concreteparent_get ()
 Get the parent of this object. More...
 
Eo_Dbg_Info dbg_info_get ()
 Get debug information of this object. More...
 
 operator bool () const
 

Static Public Member Functions

static Eo_Class const * _eo_class ()
 

Additional Inherited Members

- Protected Attributes inherited from efl::eo::concrete
Eo_eo_raw
 The opaque EO Object.
 

Detailed Description

Class base.

Constructor & Destructor Documentation

efl::model::base::base ( ::efl::eo::parent_type  _p)
inlineexplicit

Constructs a new efl::model::base object.

Constructs a new efl::model::base object. If you want this object to be a child of another Eo object, use an efl::eo::parent expression, like the example.

Example:

efl::model::base my_base(efl::eo::parent = parent_object);
See also
base(Eo* eo)
efl::model::base::base ( Eo eo)
inlineexplicit

Eo Constructor.

Constructs the object from an Eo* pointer stealing its ownership.

Parameters
eoThe Eo object pointer.
efl::model::base::base ( std::nullptr_t  )
inlineexplicit

nullptr_t Constructor.

Constructs an empty (null) object.

Member Function Documentation

void efl::model::base::load ( ) const

Load emodel.

By convention this means loading data from an external source and populating the models properties and children with it. For example in the case of file system backed model, this means opening the relevant files and reading the data from them(creating the properties and children from it). the model emit EFL_MODEL_EVENT_LOAD_STATUS after end with Efl_Model_Load_Status

Warning
This convention should be followed, but no guarantees of behaviour by user defined types can be given.

Alternatively is possible to use properties_load to load only properties and children_load to load only children. If efl_model_load is called then calling properties_load and/or children_load is not necessary.

See also
Efl_Model_Load_Status
efl_model_properties_load
efl_model_children_load
efl_model_unload
efl_model_load_status_get
Since
1.14
void efl::model::base::unload ( ) const

Unload emodel.

By convention this means releasing data received/read from an external source. For example of a database backed model this might mean releasing the iterator for the currently loaded data or deleting a temporary table. the model emit EFL_MODEL_EVENT_LOAD_STATUS after end with model load status

Warning
This convention should be followed, but no guarantees of behaviour by user defined types can be given.
See also
Efl_Model_Load_Status
efl_model_load
efl_model_load_status_get
Since
1.14
void efl::model::base::properties_load ( ) const

Properties emodel load.

By convention this means loading data from an external source and populating the models properties only. This method is a subset of efl_model_load, meaning that it won't load children, it is a hint. For loadind both properties and children use efl_model_load instead.

See also
efl_model_load
Since
1.14
void efl::model::base::children_load ( ) const

Children emodel load.

By convention this means loading data from an external source and populating the models children only. This method is a subset of efl_model_load, meaning that it won't load properties. For loadind both properties and children use efl_model_load instead.

See also
efl_model_load
Since
1.14
::efl::eo::concrete efl::model::base::child_add ( ) const

Add a new child.

Returns
: Emodel* on success, NULL otherwise

Add a new child, possibly dummy, depending on the implementation, of a internal keeping. When the child is effectively added the event EFL_MODEL_EVENT_CHILD_ADD is then raised and the new child is kept along with other children.

See also
EFL_MODEL_EVENT_CHILD_ADD
load_status_get
Since
1.14
Efl_Model_Load_Status efl::model::base::child_del ( ::efl::eo::concrete  child_) const

Remove a child.

Returns
: Efl_Model_Load_Status on success, EFL_MODEL_LOAD_STATUS_ERROR otherwise.

Remove a child of a internal keeping. When the child is effectively removed the event EFL_MODEL_EVENT_CHILD_REMOVED is then raised to give a chance for listeners to perform any cleanup and/or update references.

See also
EFL_MODEL_EVENT_CHILD_REMOVED
Since
1.14
Parameters
childChild to be removed
Efl_Model_Load_Status efl::model::base::load_status_get ( ) const

Get a load emodel current status.

Returns
: Efl_Model_Load_Status

By convention this means get the current model status. Possible values are defined Efl_Model_Load_Status enumerator.

See also
Efl_Model_Load_Status
efl_model_load
Since
1.14
Efl_Model_Load_Status efl::model::base::properties_get ( Eina_Array *const *  properties_) const

Get properties from model.

Returns
: Efl_Model_Load_Status

properties_get is due to provide callers a way the fetch the current properties implemented/used by the model. The event EFL_MODEL_EVENT_PROPERTIES_CHANGE will be raised to notify listeners of any modifications in the properties.

See also
EFL_MODEL_EVENT_PROPERTIES_CHANGE
Since
1.14
Parameters
propertiesarray of current properties
Efl_Model_Load_Status efl::model::base::property_get ( ::efl::eina::string_view  property_,
const Eina_Value **  value_ 
) const

Retrieve the value of a given property name.

Returns
: Load Status, on success, EFL_MODEL_LOAD_STATUS_ERROR otherwise

property_get will only be available when load status is equal to EFL_MODEL_LOAD_STATUS_LOADED.

At this point the caller is free to get values from properties. The event EFL_MODEL_EVENT_PROPERTIES_CHANGE may be raised to notify listeners of the property/value.

See also
efl_model_properties_get
EFL_MODEL_EVENT_PROPERTIES_CHANGE
Since
1.14
Parameters
valueNew value
Efl_Model_Load_Status efl::model::base::property_set ( ::efl::eina::string_view  property_,
const Eina_Value value_ 
) const

Set a property value of a given property name.

Returns
: EINA_TRUE, on success, EINA_FALSE in readonly property or error

The caller must ensure to call at least efl_model_prop_list before being able to see/set properties. This function sets a new property value into given property name. Once the operation is completed the concrete implementation should raise EFL_MODEL_EVENT_PROPERTIES_CHANGE event in order to notify listeners of the new value of the property.

If the model doesn't have the property then there are two possibilities, either raise an error or create the new property in model

See also
efl_model_property_get
EFL_MODEL_EVENT_PROPERTIES_CHANGE
Since
1.14
Parameters
valueNew value
Efl_Model_Load_Status efl::model::base::children_slice_get ( unsigned  start_,
unsigned  count_,
Eina_Accessor **  children_accessor_ 
) const

Get children slice OR full range.

Returns
: Efl_Model_Load_Status. See below for more info.

Before being able to get the children list the model status must be on loaded status (EFL_MODEL_LOAD_STATUS_LOADED). However there may be circunstancies where the model could be in a different state, in such cases it is advisable to simply return: its current state, which will be of course, different than EFL_MODEL_LOAD_STATUS_LOADED_CHILDREN. When children accessor is return:ed as NULL one should then test the current load status return:ed by in order to check against an empty list or real error.

children_slice_get behaves in two different ways, it may provide the slice if both start AND count are non-zero OR full range otherwise.

The return:ed Eina_Accessor must be freed when it is no longer needed and eo_unref() must be invoked for children if caller wants a copy.

Since 'slice' is a range, for example if we have 20 childs a slice could be the range from 3(start) to 4(count), see: child 0 [no] child 1 [no] child 2 [yes] child 3 [yes] child 4 [yes] child 5 [yes] child 6 [no] child 7 [no]

Optionally the user can call children_count_get to know the number of children so a valid range can be known in advance.

Below are examples of both usage types: slices and full ranges.

// Returns full list
eo_do(obj, efl_model_children_slice_get(0, 0, &children_accessor));
// Returns 5 items, counting from item #5
eo_do(obj, efl_model_children_slice_get(5, 5, &children_accessor));
See also
efl_model_children_get
efl_model_children_count_get
efl_model_load
efl_model_load_status_get
Since
1.14
Parameters
children_accessor
Efl_Model_Load_Status efl::model::base::children_count_get ( unsigned *  children_count_) const

Get children count.

Returns
: EINA_TRUE, on success, EINA_FALSE otherwise

When efl_model_load is completed efl_model_coildren_count_get can be use to get the number of children. children_count_get can also be used before calling children_slice_get so a valid range is known. Event EFL_MODEL_CHILDREN_COUNT_CHANGED is emitted when count is finished.

See also
efl_model_children_get
efl_model_children_slice_get
efl_model_load
efl_model_load_status_get
Since
1.14
Parameters
children_count