Tizen Native API  5.5
Dali::Toolkit::Internal::Control Class Reference

This is the internal base class for all controls. More...

Inheritance diagram for Dali::Toolkit::Internal::Control:
Dali::CustomActorImpl Dali::ConnectionTrackerInterface Dali::RefObject Dali::SignalObserver

Public Member Functions

void SetStyleName (const std::string &styleName)
const std::string & GetStyleName () const
void SetBackgroundColor (const Vector4 &color)
void SetBackground (const Property::Map &map)
 Sets the background with a property map.
void ClearBackground ()
void EnableGestureDetection (Gesture::Type type)
 Allows deriving classes to enable any of the gesture detectors that are available.
void DisableGestureDetection (Gesture::Type type)
 Allows deriving classes to disable any of the gesture detectors.
PinchGestureDetector GetPinchGestureDetector () const
 If deriving classes wish to fine tune pinch gesture detection, then they can access the gesture detector through this API and modify the detection.
PanGestureDetector GetPanGestureDetector () const
 If deriving classes wish to fine tune pan gesture detection, then they can access the gesture detector through this API and modify the detection.
TapGestureDetector GetTapGestureDetector () const
 If deriving classes wish to fine tune tap gesture detection, then they can access the gesture detector through this API and modify the detection.
LongPressGestureDetector GetLongPressGestureDetector () const
 If deriving classes wish to fine tune long press gesture detection, then they can access the gesture detector through this API and modify the detection.
void SetKeyboardNavigationSupport (bool isSupported)
 Sets whether this control supports two dimensional keyboard navigation (i.e. whether it knows how to handle the keyboard focus movement between its child actors).
bool IsKeyboardNavigationSupported ()
 Gets whether this control supports two dimensional keyboard navigation.
void SetKeyInputFocus ()
bool HasKeyInputFocus ()
void ClearKeyInputFocus ()
void SetAsKeyboardFocusGroup (bool isFocusGroup)
 Sets whether this control is a focus group for keyboard navigation.
bool IsKeyboardFocusGroup ()
 Gets whether this control is a focus group for keyboard navigation.
Toolkit::Control::KeyEventSignalTypeKeyEventSignal ()
Toolkit::Control::KeyInputFocusSignalTypeKeyInputFocusGainedSignal ()
Toolkit::Control::KeyInputFocusSignalTypeKeyInputFocusLostSignal ()
virtual void OnInitialize ()
 This method is called after the Control has been initialized.
virtual void OnControlChildAdd (Actor &child) DALI_DEPRECATED_API
 Called whenever an Actor is added to the control.
virtual void OnControlChildRemove (Actor &child) DALI_DEPRECATED_API
 Called whenever an Actor is removed from the control.
virtual void OnStyleChange (Toolkit::StyleManager styleManager, StyleChange::Type change)
 This method should be overridden by deriving classes requiring notifications when the style changes.
virtual bool OnAccessibilityActivated ()
 This method is called when the control is accessibility activated.
virtual bool OnAccessibilityPan (PanGesture gesture)
 This method should be overridden by deriving classes when they wish to respond the accessibility pan gesture.
virtual bool OnAccessibilityTouch (const TouchEvent &touchEvent)
 This method should be overridden by deriving classes when they wish to respond the accessibility touch event.
virtual bool OnAccessibilityValueChange (bool isIncrease)
 This method should be overridden by deriving classes when they wish to respond the accessibility up and down action (i.e. value change of slider control).
virtual bool OnAccessibilityZoom ()
 This method should be overridden by deriving classes when they wish to respond the accessibility zoom action.
virtual void OnKeyInputFocusGained ()
 Called when the control gains key input focus.
virtual void OnKeyInputFocusLost ()
 Called when the control loses key input focus.
virtual Actor GetNextKeyboardFocusableActor (Actor currentFocusedActor, Toolkit::Control::KeyboardFocus::Direction direction, bool loopEnabled)
 Gets the next keyboard focusable actor in this control towards the given direction.
virtual void OnKeyboardFocusChangeCommitted (Actor commitedFocusableActor)
 Informs this control that its chosen focusable actor will be focused.
virtual bool OnKeyboardEnter ()
 This method is called when the control has enter pressed on it.
virtual void OnPinch (const PinchGesture &pinch)
 Called whenever a pinch gesture is detected on this control.
virtual void OnPan (const PanGesture &pan)
 Called whenever a pan gesture is detected on this control.
virtual void OnTap (const TapGesture &tap)
 Called whenever a tap gesture is detected on this control.
virtual void OnLongPress (const LongPressGesture &longPress)
 Called whenever a long press gesture is detected on this control.
virtual void SignalConnected (SlotObserver *slotObserver, CallbackBase *callback)
virtual void SignalDisconnected (SlotObserver *slotObserver, CallbackBase *callback)
virtual Extension * GetControlExtension ()
 Retrieves the extension for this control.

Static Public Member Functions

static Toolkit::Control New ()
 Forward declare future extension interface.

Protected Types

enum  ControlBehaviour
 Flags for the constructor. More...

Protected Member Functions

virtual ~Control ()
 Virtual destructor.
void EmitKeyInputFocusSignal (bool focusGained)
 Emits KeyInputFocusGained signal if true else emits KeyInputFocusLost signal.
virtual void OnStageConnection (int depth)
virtual void OnStageDisconnection ()
virtual void OnChildAdd (Actor &child)
virtual void OnChildRemove (Actor &child)
virtual void OnPropertySet (Property::Index index, Property::Value propertyValue)
virtual void OnSizeSet (const Vector3 &targetSize)
virtual void OnSizeAnimation (Animation &animation, const Vector3 &targetSize)
virtual bool OnTouchEvent (const TouchEvent &event)
virtual bool OnHoverEvent (const HoverEvent &event)
virtual bool OnKeyEvent (const KeyEvent &event)
virtual bool OnWheelEvent (const WheelEvent &event)
virtual void OnRelayout (const Vector2 &size, RelayoutContainer &container)
virtual void OnSetResizePolicy (ResizePolicy::Type policy, Dimension::Type dimension)
virtual Vector3 GetNaturalSize ()
virtual float CalculateChildSize (const Dali::Actor &child, Dimension::Type dimension)
virtual float GetHeightForWidth (float width)
virtual float GetWidthForHeight (float height)
virtual bool RelayoutDependentOnChildren (Dimension::Type dimension=Dimension::ALL_DIMENSIONS)
virtual void OnCalculateRelayoutSize (Dimension::Type dimension)
virtual void OnLayoutNegotiated (float size, Dimension::Type dimension)
 Control (ControlBehaviour behaviourFlags)
 Control constructor.
void Initialize ()
 Second phase initialization.

Static Protected Attributes

static const int CONTROL_BEHAVIOUR_FLAG_COUNT = Log< LAST_CONTROL_BEHAVIOUR_FLAG - 1 >::value + 1
 Total count of flags.

Detailed Description

This is the internal base class for all controls.

It will provide some common functionality required by all controls. Implements ConnectionTrackerInterface so that signals (typically connected to member functions) will be disconnected automatically when the control is destroyed.

Since:
2.4, DALi version 1.0.0

Member Enumeration Documentation

Flags for the constructor.

Since:
2.4, DALi version 1.0.0
Enumerator:
CONTROL_BEHAVIOUR_DEFAULT 

Default behaviour: Size negotiation is enabled & listens to Style Change signal, but doesn't receive event callbacks.

Since:
3.0, DALi version 1.2.10
REQUIRES_STYLE_CHANGE_SIGNALS 

True if needs to monitor style change signals such as theme/font change.

Since:
2.4, DALi version 1.0.0
Deprecated:
Deprecated since 3.0, DALi version 1.2.10
REQUIRES_KEYBOARD_NAVIGATION_SUPPORT 

True if needs to support keyboard navigation.

Since:
2.4, DALi version 1.0.0
DISABLE_STYLE_CHANGE_SIGNALS 

True if control should not monitor style change signals.

Since:
3.0, DALi version 1.2.10

Constructor & Destructor Documentation

virtual Dali::Toolkit::Internal::Control::~Control ( ) [protected, virtual]

Virtual destructor.

Since:
2.4, DALi version 1.0.0

Control constructor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]behaviourFlagsBehavioural flags from ControlBehaviour enum

Member Function Documentation

virtual float Dali::Toolkit::Internal::Control::CalculateChildSize ( const Dali::Actor child,
Dimension::Type  dimension 
) [protected, virtual]

Calculates the size for a child.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]childThe child actor to calculate the size for
[in]dimensionThe dimension to calculate the size for. E.g. width or height
Returns:
Return the calculated size for the given dimension

Implements Dali::CustomActorImpl.

Clears the background.

Since:
2.4, DALi version 1.0.0

Once an actor is Set to receive key input focus this function is called to stop it receiving key events.

A check is performed to ensure it was previously set, if this check fails then nothing is done.

Since:
2.4, DALi version 1.0.0
Precondition:
The Actor has been initialized.

Allows deriving classes to disable any of the gesture detectors.

Like EnableGestureDetection, this can also be called using bitwise or.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]typeThe gesture type(s) to disable
See also:
EnableGetureDetection
void Dali::Toolkit::Internal::Control::EmitKeyInputFocusSignal ( bool  focusGained) [protected]

Emits KeyInputFocusGained signal if true else emits KeyInputFocusLost signal.

Should be called last by the control after it acts on the Input Focus change.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]focusGainedTrue if gained, False if lost

Allows deriving classes to enable any of the gesture detectors that are available.

Gesture detection can be enabled one at a time or in bitwise format as shown:

Since:
2.4, DALi version 1.0.0
Parameters:
[in]typeThe gesture type(s) to enable

Retrieves the extension for this control.

Since:
2.4, DALi version 1.0.0
Returns:
The extension if available, NULL otherwise
virtual float Dali::Toolkit::Internal::Control::GetHeightForWidth ( float  width) [protected, virtual]

This method is called during size negotiation when a height is required for a given width.

Derived classes should override this if they wish to customize the height returned.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]widthWidth to use
Returns:
The height based on the width

Implements Dali::CustomActorImpl.

If deriving classes wish to fine tune long press gesture detection, then they can access the gesture detector through this API and modify the detection.

Since:
2.4, DALi version 1.0.0
Returns:
The long press gesture detector
Precondition:
Long press detection should have been enabled via EnableGestureDetection().
See also:
EnableGestureDetection

Returns the natural size of the actor.

Since:
2.4, DALi version 1.0.0
Returns:
The actor's natural size

Implements Dali::CustomActorImpl.

virtual Actor Dali::Toolkit::Internal::Control::GetNextKeyboardFocusableActor ( Actor  currentFocusedActor,
Toolkit::Control::KeyboardFocus::Direction  direction,
bool  loopEnabled 
) [virtual]

Gets the next keyboard focusable actor in this control towards the given direction.

A control needs to override this function in order to support two dimensional keyboard navigation.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]currentFocusedActorThe current focused actor
[in]directionThe direction to move the focus towards
[in]loopEnabledWhether the focus movement should be looped within the control
Returns:
The next keyboard focusable actor in this control or an empty handle if no actor can be focused

If deriving classes wish to fine tune pan gesture detection, then they can access the gesture detector through this API and modify the detection.

Since:
2.4, DALi version 1.0.0
Returns:
The pan gesture detector
Precondition:
Pan detection should have been enabled via EnableGestureDetection().
See also:
EnableGestureDetection

If deriving classes wish to fine tune pinch gesture detection, then they can access the gesture detector through this API and modify the detection.

Since:
2.4, DALi version 1.0.0
Returns:
The pinch gesture detector
Precondition:
Pinch detection should have been enabled via EnableGestureDetection().
See also:
EnableGestureDetection
const std::string& Dali::Toolkit::Internal::Control::GetStyleName ( ) const

Retrieves the name of the style to be applied to the control (if any).

Since:
2.4, DALi version 1.0.0
Returns:
A string matching a style, or an empty string

If deriving classes wish to fine tune tap gesture detection, then they can access the gesture detector through this API and modify the detection.

Since:
2.4, DALi version 1.0.0
Returns:
The tap gesture detector
Precondition:
Tap detection should have been enabled via EnableGestureDetection().
See also:
EnableGestureDetection
virtual float Dali::Toolkit::Internal::Control::GetWidthForHeight ( float  height) [protected, virtual]

This method is called during size negotiation when a width is required for a given height.

Derived classes should override this if they wish to customize the width returned.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]heightHeight to use
Returns:
The width based on the width

Implements Dali::CustomActorImpl.

Quries whether the control has key input focus.

Since:
2.4, DALi version 1.0.0
Returns:
true if this control has keyboard input focus
Precondition:
The Control has been initialized.
The Control should be on the stage before setting keyboard focus.
Note:
The control can be set to have the focus and still not receive all the key events if another control has over ridden it. As the key input focus mechanism works like a stack, the top most control receives all the key events, and passes on the unhandled events to the controls below in the stack. A control in the stack will regain key input focus when there are no more controls above it in the focus stack. To query for the control which is on top of the focus stack use Dali::Toolkit::KeyInputFocusManager::GetCurrentKeyboardFocusActor().

Second phase initialization.

Since:
2.4, DALi version 1.0.0

Gets whether this control is a focus group for keyboard navigation.

Since:
2.4, DALi version 1.0.0
Returns:
true if this control is set as a focus group for keyboard navigation

Gets whether this control supports two dimensional keyboard navigation.

Since:
2.4, DALi version 1.0.0
Returns:
true if this control supports two dimensional keyboard navigation

This signal is emitted when key event is received.

A callback of the following type may be connected:

   bool YourCallbackName(Control control, const KeyEvent& event);

The return value of True, indicates that the event should be consumed. Otherwise the signal will be emitted on the next parent of the actor.

Since:
2.4, DALi version 1.0.0
Returns:
The signal to connect to
Precondition:
The Control has been initialized.

This signal is emitted when the control gets Key Input Focus.

A callback of the following type may be connected:

   bool YourCallbackName( Control control );

The return value of True, indicates that the event should be consumed. Otherwise the signal will be emitted on the next parent of the actor.

Since:
2.4, DALi version 1.0.0
Returns:
The signal to connect to
Precondition:
The Control has been initialized.

This signal is emitted when the control loses Key Input Focus.

This could be due to it being gained by another Control or Actor or just cleared from this control as no longer required.

A callback of the following type may be connected:

   bool YourCallbackName( Control control );

The return value of True, indicates that the event should be consumed. Otherwise the signal will be emitted on the next parent of the actor.

Since:
2.4, DALi version 1.0.0
Returns:
The signal to connect to
Precondition:
The Control has been initialized.

Forward declare future extension interface.

Creates a new ControlImpl instance that does not require touch by default.

If touch is required, then the user can connect to this class' touch signal.

Since:
2.4, DALi version 1.0.0
Returns:
A handle to the ControlImpl instance

This method is called when the control is accessibility activated.

Derived classes should override this to perform custom accessibility activation.

Since:
2.4, DALi version 1.0.0
Returns:
true if this control can perform accessibility activation

This method should be overridden by deriving classes when they wish to respond the accessibility pan gesture.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]gestureThe pan gesture
Returns:
true if the pan gesture has been consumed by this control
virtual bool Dali::Toolkit::Internal::Control::OnAccessibilityTouch ( const TouchEvent touchEvent) [virtual]

This method should be overridden by deriving classes when they wish to respond the accessibility touch event.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]touchEventThe touch event
Returns:
true if the touch event has been consumed by this control
virtual bool Dali::Toolkit::Internal::Control::OnAccessibilityValueChange ( bool  isIncrease) [virtual]

This method should be overridden by deriving classes when they wish to respond the accessibility up and down action (i.e. value change of slider control).

Since:
2.4, DALi version 1.0.0
Parameters:
[in]isIncreaseWhether the value should be increased or decreased
Returns:
true if the value changed action has been consumed by this control

This method should be overridden by deriving classes when they wish to respond the accessibility zoom action.

Since:
2.4, DALi version 1.0.0
Returns:
true if the zoom action has been consumed by this control
virtual void Dali::Toolkit::Internal::Control::OnCalculateRelayoutSize ( Dimension::Type  dimension) [protected, virtual]

Virtual method to notify deriving classes that relayout dependencies have been met and the size for this object is about to be calculated for the given dimension.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]dimensionThe dimension that is about to be calculated

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnChildAdd ( Actor child) [protected, virtual]

Called after a child has been added to the owning actor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]childThe child which has been added
Note:
If overridden, then an up-call to Control::OnChildAdd MUST be made at the end.

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnChildRemove ( Actor child) [protected, virtual]

Called after the owning actor has attempted to remove a child (regardless of whether it succeeded or not).

Since:
2.4, DALi version 1.0.0
Parameters:
[in]childThe child being removed
Note:
If overridden, then an up-call to Control::OnChildRemove MUST be made at the end.

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnControlChildAdd ( Actor child) [virtual]

Called whenever an Actor is added to the control.

Deprecated:
Deprecated since 3.0, DALi version 1.1.30. Override OnChildAdd instead.

Could be overridden by derived classes.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]childThe added actor

Called whenever an Actor is removed from the control.

Deprecated:
Deprecated since 3.0, DALi version 1.1.30. Override OnChildRemove instead.

Could be overridden by derived classes.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]childThe removed actor
virtual bool Dali::Toolkit::Internal::Control::OnHoverEvent ( const HoverEvent event) [protected, virtual]

Called after a hover-event is received by the owning actor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]eventThe hover event
Returns:
True if the event should be consumed
Note:
CustomActorImpl::REQUIRES_HOVER_EVENTS must be enabled during construction. See CustomActorImpl::CustomActorImpl( ActorFlags flags ).

Implements Dali::CustomActorImpl.

This method is called after the Control has been initialized.

Derived classes should do any second phase initialization by overriding this method.

Since:
2.4, DALi version 1.0.0

This method is called when the control has enter pressed on it.

Derived classes should override this to perform custom actions.

Since:
2.4, DALi version 1.0.0
Returns:
true if this control supported this action
virtual void Dali::Toolkit::Internal::Control::OnKeyboardFocusChangeCommitted ( Actor  commitedFocusableActor) [virtual]

Informs this control that its chosen focusable actor will be focused.

This allows the application to perform any actions if wishes before the focus is actually moved to the chosen actor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]commitedFocusableActorThe commited focusable actor
virtual bool Dali::Toolkit::Internal::Control::OnKeyEvent ( const KeyEvent event) [protected, virtual]

Called after a key-event is received by the actor that has had its focus set.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]eventThe Key Event
Returns:
True if the event should be consumed

Implements Dali::CustomActorImpl.

Called when the control gains key input focus.

Should be overridden by derived classes if they need to customize what happens when focus is gained.

Since:
2.4, DALi version 1.0.0

Called when the control loses key input focus.

Should be overridden by derived classes if they need to customize what happens when focus is lost.

Since:
2.4, DALi version 1.0.0
virtual void Dali::Toolkit::Internal::Control::OnLayoutNegotiated ( float  size,
Dimension::Type  dimension 
) [protected, virtual]

Virtual method to notify deriving classes that the size for a dimension has just been negotiated.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]sizeThe new size for the given dimension
[in]dimensionThe dimension that was just negotiated

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnLongPress ( const LongPressGesture longPress) [virtual]

Called whenever a long press gesture is detected on this control.

This should be overridden by deriving classes when long press detection is enabled.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]longPressThe long press gesture
Note:
There is no default behaviour associated with a long press.
Long press detection should be enabled via EnableGestureDetection().
See also:
EnableGestureDetection
virtual void Dali::Toolkit::Internal::Control::OnPan ( const PanGesture pan) [virtual]

Called whenever a pan gesture is detected on this control.

This should be overridden by deriving classes when pan detection is enabled.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]panThe pan gesture
Note:
There is no default behavior with panning.
Pan detection should be enabled via EnableGestureDetection().
See also:
EnableGestureDetection
virtual void Dali::Toolkit::Internal::Control::OnPinch ( const PinchGesture pinch) [virtual]

Called whenever a pinch gesture is detected on this control.

This can be overridden by deriving classes when pinch detection is enabled. The default behaviour is to scale the control by the pinch scale.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]pinchThe pinch gesture
Note:
If overridden, then the default behavior will not occur.
Pinch detection should be enabled via EnableGestureDetection().
See also:
EnableGestureDetection
virtual void Dali::Toolkit::Internal::Control::OnPropertySet ( Property::Index  index,
Property::Value  propertyValue 
) [protected, virtual]

Called when the owning actor property is set.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]indexThe Property index that was set
[in]propertyValueThe value to set
Note:
If overridden, then an up-call to Control::OnChildRemove MUST be made at the end.

Reimplemented from Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnRelayout ( const Vector2 size,
RelayoutContainer container 
) [protected, virtual]

Called after the size negotiation has been finished for this control.

The control is expected to assign this given size to itself/its children.

Should be overridden by derived classes if they need to layout actors differently after certain operations like add or remove actors, resize or after changing specific properties.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]sizeThe allocated size
[in,out]containerThe control should add actors to this container that it is not able to allocate a size for
Note:
As this function is called from inside the size negotiation algorithm, you cannot call RequestRelayout (the call would just be ignored).

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnSetResizePolicy ( ResizePolicy::Type  policy,
Dimension::Type  dimension 
) [protected, virtual]

Notification for deriving classes.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]policyThe policy being set
[in]dimensionThe dimension the policy is being set for

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnSizeAnimation ( Animation animation,
const Vector3 targetSize 
) [protected, virtual]

Called when the owning actor's size is animated e.g. using Animation::AnimateTo( Property( actor, Actor::Property::SIZE ), ... ).

Since:
2.4, DALi version 1.0.0
Parameters:
[in]animationThe object which is animating the owning actor
[in]targetSizeThe target size. Note that this target size may not match the size returned via Actor::GetTargetSize
Note:
If overridden, then an up-call to Control::OnSizeAnimation MUST be made at the end.

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnSizeSet ( const Vector3 targetSize) [protected, virtual]

Called when the owning actor's size is set e.g. using Actor::SetSize().

Since:
2.4, DALi version 1.0.0
Parameters:
[in]targetSizeThe target size. Note that this target size may not match the size returned via Actor::GetTargetSize
Note:
If overridden, then an up-call to Control::OnSizeSet MUST be made at the end.

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnStageConnection ( int  depth) [protected, virtual]

Called after the actor has been connected to the stage.

When an actor is connected, it will be directly or indirectly parented to the root Actor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]depthThe depth in the hierarchy for the actor
Note:
The root Actor is provided automatically by Dali::Stage, and is always considered to be connected. When the parent of a set of actors is connected to the stage, then all of the children will received this callback. For the following actor tree, the callback order will be A, B, D, E, C, and finally F.
       A (parent)
      / \
     B   C
    / \   \
   D   E   F
Parameters:
[in]depthThe depth in the hierarchy for the actor
Note:
If overridden, then an up-call to Control::OnStageConnection MUST be made at the end.
virtual void Dali::Toolkit::Internal::Control::OnStageDisconnection ( ) [protected, virtual]

Called after the actor has been disconnected from Stage.

If an actor is disconnected, it either has no parent or is parented to a disconnected actor.

Since:
2.4, DALi version 1.0.0
Note:
When the parent of a set of actors is disconnected to the stage, then all of the children will received this callback, starting with the leaf actors. For the following actor tree, the callback order will be D, E, B, F, C, and finally A.
       A (parent)
      / \
     B   C
    / \   \
   D   E   F
Note:
If overridden, then an up-call to Control::OnStageDisconnection MUST be made at the end.

Implements Dali::CustomActorImpl.

virtual void Dali::Toolkit::Internal::Control::OnStyleChange ( Toolkit::StyleManager  styleManager,
StyleChange::Type  change 
) [virtual]

This method should be overridden by deriving classes requiring notifications when the style changes.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]styleManagerThe StyleManager object
[in]changeInformation denoting what has changed
virtual void Dali::Toolkit::Internal::Control::OnTap ( const TapGesture tap) [virtual]

Called whenever a tap gesture is detected on this control.

This should be overridden by deriving classes when tap detection is enabled.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]tapThe tap gesture
Note:
There is no default behavior with a tap.
Tap detection should be enabled via EnableGestureDetection().
See also:
EnableGestureDetection
virtual bool Dali::Toolkit::Internal::Control::OnTouchEvent ( const TouchEvent event) [protected, virtual]

Called after a touch-event is received by the owning actor.

Deprecated:
Deprecated since 3.0, DALi version 1.1.37 Connect to TouchSignal() instead.
Since:
2.4, DALi version 1.0.0
Parameters:
[in]eventThe touch event
Returns:
True if the event should be consumed
Note:
CustomActorImpl::REQUIRES_TOUCH_EVENTS must be enabled during construction. See CustomActorImpl::CustomActorImpl( ActorFlags flags ).

Implements Dali::CustomActorImpl.

virtual bool Dali::Toolkit::Internal::Control::OnWheelEvent ( const WheelEvent event) [protected, virtual]

Called after a wheel-event is received by the owning actor.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]eventThe wheel event
Returns:
True if the event should be consumed
Note:
CustomActorImpl::REQUIRES_WHEEL_EVENTS must be enabled during construction. See CustomActorImpl::CustomActorImpl( ActorFlags flags ).

Implements Dali::CustomActorImpl.

Determines if this actor is dependent on its children for relayout.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]dimensionThe dimension(s) to check for
Returns:
Return if the actor is dependent on it's children

Implements Dali::CustomActorImpl.

Sets whether this control is a focus group for keyboard navigation.

(i.e. the scope of keyboard focus movement can be limited to its child actors). The control is not a focus group by default.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]isFocusGroupWhether this control is set as a focus group for keyboard navigation

Sets the background with a property map.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]mapThe background property map

Sets the background color of the control.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]colorThe required background color of the control
Note:
If SetBackgroundImage is called later, this background color is removed.
The background color fully blends with the actor color.

Sets whether this control supports two dimensional keyboard navigation (i.e. whether it knows how to handle the keyboard focus movement between its child actors).

The control doesn't support it by default.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]isSupportedWhether this control supports two dimensional keyboard navigation

This sets the control to receive key events.

The key event can originate from a virtual or physical keyboard.

Since:
2.4, DALi version 1.0.0
Precondition:
The Control has been initialized.
The Control should be on the stage before setting keyboard focus.
void Dali::Toolkit::Internal::Control::SetStyleName ( const std::string &  styleName)

Sets the name of the style to be applied to the control.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]styleNameA string matching a style described in a stylesheet
virtual void Dali::Toolkit::Internal::Control::SignalConnected ( SlotObserver slotObserver,
CallbackBase callback 
) [virtual]

Called when a signal is connected.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]slotObserverThe slot observer i.e. a signal. Ownership is not passed
[in]callbackThe call back. Ownership is not passed

Implements Dali::ConnectionTrackerInterface.

virtual void Dali::Toolkit::Internal::Control::SignalDisconnected ( SlotObserver slotObserver,
CallbackBase callback 
) [virtual]

This method is called when the signal is disconnecting.

Since:
2.4, DALi version 1.0.0
Parameters:
[in]slotObserverThe signal that has disconnected
[in]callbackThe callback attached to the signal disconnected

Implements Dali::SignalObserver.