Class CustomView

Definition

Namespace:

Tizen.NUI.BaseComponents

Assembly:

Tizen.NUI.dll

CustomView provides some common functionality required by all views.

public class CustomView : ViewWrapper, IDisposable

Inheritance

object

BaseHandle

Animatable

Container

View

ViewWrapper

CustomView

Derived

VisualView

VisualView

VisualView

VisualView

VisualView

VisualView

VisualView

VisualView

VisualView

Spin

Spin

Spin

Spin

Spin

Spin

Spin

Spin

Spin

Implements

System.IDisposable

Constructors

CustomView(string, CustomViewBehaviour)

Create an instance of customView.

Declaration

public CustomView(string typeName, CustomViewBehaviour behaviour)

Parameters

Type	Name	Description
string	typeName	typename
CustomViewBehaviour	behaviour	CustomView Behaviour

Properties

FocusGroup

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

Declaration

public bool FocusGroup { get; set; }

Property Value

Type	Description
bool	True if this control is set as a focus group for keyboard navigation.

FocusNavigationSupport

Sets whether this control supports two dimensional keyboard navigation (i.e., whether it knows how to handle the keyboard focus movement between its child views).
The control doesn't support it by default.

Declaration

public bool FocusNavigationSupport { get; set; }

Property Value

Type	Description
bool

Methods

CalculateChildSize(View, DimensionType)

Calculates the size for a child.

Declaration

public virtual float CalculateChildSize(View child, DimensionType dimension)

Parameters

Type	Name	Description
View	child	The child view to calculate the size for.
DimensionType	dimension	The dimension to calculate the size, for example, the width or the height.

Returns

Type	Description
float	Return the calculated size for the given dimension. If more than one dimension is requested, just return the first one found.

CalculateChildSizeBase(View, DimensionType)

Calculates the size for a child using the base view object.

Declaration

protected float CalculateChildSizeBase(View child, DimensionType dimension)

Parameters

Type	Name	Description
View	child	The child view to calculate the size for.
DimensionType	dimension	The dimension to calculate the size, for example, the width or the height.

Returns

Type	Description
float	Return the calculated size for the given dimension. If more than one dimension is requested, just return the first one found.

CreateTransition(TransitionData)

Creates a transition effect on the control.

Declaration

protected Animation CreateTransition(TransitionData transitionData)

Parameters

Type	Name	Description
TransitionData	transitionData	The transition data describing the effect to create.

Returns

Type	Description
Animation	A handle to an animation defined with the given effect, or an empty handle if no properties match.

EmitFocusSignal(bool)

Emits the KeyInputFocusGained signal if true, else, emits the KeyInputFocusLost signal.
Should be called last by the control after it acts on the input focus change.

Declaration

protected void EmitFocusSignal(bool focusGained)

Parameters

Type	Name	Description
bool	focusGained	True if gained, false if lost.

EnableGestureDetection(GestureType)

Allows deriving classes to enable any of the gesture detectors that are available.
Gesture detection can be enabled one at a time or in a bitwise format.

Declaration

public void EnableGestureDetection(Gesture.GestureType type)

Parameters

Type	Name	Description
Gesture.GestureType	type	The gesture type(s) to enable.

EnableVisual(int, bool)

Sets the given visual to be displayed or not when parent staged.
For managing the object lifecycle, do not store the returned visual as a member which increments its reference count.

Declaration

protected void EnableVisual(int index, bool enable)

Parameters

Type	Name	Description
int	index	The property index of the visual, used to reference visual.
bool	enable	Flag set to enabled or disabled.

GetHeightForWidth(float)

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.

Declaration

public virtual float GetHeightForWidth(float width)

Parameters

Type	Name	Description
float	width	Width to use

Returns

Type	Description
float	The height based on the width

GetHeightForWidthBase(float)

Provides the view implementation of GetHeightForWidth.

Declaration

protected float GetHeightForWidthBase(float width)

Parameters

Type	Name	Description
float	width	The width to use.

Returns

Type	Description
float	The height based on the width.

GetNaturalSize()

Returns the natural size of the view.

Declaration

public virtual Size2D GetNaturalSize()

Returns

Type	Description
Size2D	The view's natural size

GetNextFocusableView(View, FocusDirection, bool)

Gets the next keyboard focusable view in this control towards the given direction.
A control needs to override this function in order to support two dimensional keyboard navigation.

Declaration

public virtual View GetNextFocusableView(View currentFocusedView, View.FocusDirection direction, bool loopEnabled)

Parameters

Type	Name	Description
View	currentFocusedView	The current focused view.
View.FocusDirection	direction	The direction to move the focus towards.
bool	loopEnabled	Whether the focus movement should be looped within the control.

Returns

Type	Description
View	The next keyboard focusable view in this control or an empty handle if no view can be focused.

GetVisual(int)

Retrieves the visual associated with the given property index.
For managing the object lifecycle, do not store the returned visual as a member which increments its reference count.

Declaration

protected VisualBase GetVisual(int index)

Parameters

Type	Name	Description
int	index	The property index of the visual used to reference visual.

Returns

Type	Description
VisualBase	The registered visual if exists, otherwise an empty handle.

GetWidthForHeight(float)

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.

Declaration

public virtual float GetWidthForHeight(float height)

Parameters

Type	Name	Description
float	height	Height to use

Returns

Type	Description
float	The width based on the width

GetWidthForHeightBase(float)

Provides the view implementation of GetWidthForHeight.

Declaration

protected float GetWidthForHeightBase(float height)

Parameters

Type	Name	Description
float	height	The height to use.

Returns

Type	Description
float	The width based on the height.

IsVisualEnabled(int)

Queries if the given visual is to be displayed when parent staged.
For managing the object lifecycle, do not store the returned visual as a member which increments its reference count.

Declaration

protected bool IsVisualEnabled(int index)

Parameters

Type	Name	Description
int	index	The property index of the visual.

Returns

Type	Description
bool	Whether visual is enabled or not.

OnCalculateRelayoutSize(DimensionType)

The 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.

Declaration

public virtual void OnCalculateRelayoutSize(DimensionType dimension)

Parameters

Type	Name	Description
DimensionType	dimension	The dimension that is about to be calculated.

OnChildAdd(View)

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

Declaration

public virtual void OnChildAdd(View view)

Parameters

Type	Name	Description
View	view	The child which has been added.

OnChildRemove(View)

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

Declaration

public virtual void OnChildRemove(View view)

Parameters

Type	Name	Description
View	view	The child being removed.

OnFocusChangeCommitted(View)

Informs this control that its chosen focusable view will be focused.
This allows the application to preform any actions it wishes before the focus is actually moved to the chosen view.

Declaration

public virtual void OnFocusChangeCommitted(View commitedFocusableView)

Parameters

Type	Name	Description
View	commitedFocusableView	The commited focused view.

OnFocusGained()

Called when the control gain key input focus. Should be overridden by derived classes if they need to customize what happens when the focus is gained.

Declaration

public virtual void OnFocusGained()

OnFocusLost()

Called when the control loses key input focus. Should be overridden by derived classes if they need to customize what happens when the focus is lost.

Declaration

public virtual void OnFocusLost()

OnHover(Hover)

Called after a hover event is received by the owning view.
CustomViewBehaviour.REQUIRES_HOVER_EVENTS must be enabled during construction. See CustomView(ViewWrapperImpl.CustomViewBehaviour behaviour).

Declaration

public virtual bool OnHover(Hover hover)

Parameters

Type	Name	Description
Hover	hover	The hover event.

Returns

Type	Description
bool	True if the hover event should be consumed.

OnInitialize()

This method is called after the control has been initialized.
Derived classes should do any second phase initialization by overriding this method.

Declaration

public virtual void OnInitialize()

OnKey(Key)

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

Declaration

public virtual bool OnKey(Key key)

Parameters

Type	Name	Description
Key	key	The key event.

Returns

Type	Description
bool	True if the key event should be consumed.

OnKeyboardEnter()

This method is called when the control has enter pressed on it.
Derived classes should override this to perform custom actions.

Declaration

public virtual bool OnKeyboardEnter()

Returns

Type	Description
bool	True if this control supported this action.

OnLayoutNegotiated(float, DimensionType)

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

Declaration

public virtual void OnLayoutNegotiated(float size, DimensionType dimension)

Parameters

Type	Name	Description
float	size	The new size for the given dimension.
DimensionType	dimension	The dimension that was just negotiated.

OnPan(PanGesture)

Called whenever a pan gesture is detected on this control.
This should be overridden by deriving classes when pan detection is enabled.
There is no default behavior with panning.
Pan detection should be enabled via EnableGestureDetection().

Declaration

public virtual void OnPan(PanGesture pan)

Parameters

Type	Name	Description
PanGesture	pan	The pan gesture.

OnPropertySet(int, PropertyValue)

Called when the owning view property is set.

Declaration

public virtual void OnPropertySet(int index, PropertyValue propertyValue)

Parameters

Type	Name	Description
int	index	The property index that was set.
PropertyValue	propertyValue	The value to set.

OnRelayout(Vector2, RelayoutContainer)

Called after the size negotiation has been finished for this control.
The control is expected to assign this given size to itself or its children.
Should be overridden by derived classes if they need to layout views differently after certain operations like add or remove views, resize, or after changing specific properties.
As this function is called from inside the size negotiation algorithm, you cannot call RequestRelayout (the call would just be ignored).

Declaration

public virtual void OnRelayout(Vector2 size, RelayoutContainer container)

Parameters

Type	Name	Description
Vector2	size	The allocated size.
RelayoutContainer	container	The control should add views to this container that it is not able to allocate a size for.

OnSetResizePolicy(ResizePolicyType, DimensionType)

Notification for deriving classes.

Declaration

public virtual void OnSetResizePolicy(ResizePolicyType policy, DimensionType dimension)

Parameters

Type	Name	Description
ResizePolicyType	policy	The policy being set.
DimensionType	dimension	The policy is being set for.

OnSizeAnimation(Animation, Vector3)

Called when the owning view's size is animated, for example, using Animation::AnimateTo( Property ( view, View::Property::SIZE ), ... ).

Declaration

public virtual void OnSizeAnimation(Animation animation, Vector3 targetSize)

Parameters

Type	Name	Description
Animation	animation	The object which is animating the owning view.
Vector3	targetSize	The target size.

OnSizeSet(Vector3)

Called when the owning view's size is set, for example, using View.SetSize().

Declaration

public virtual void OnSizeSet(Vector3 targetSize)

Parameters

Type	Name	Description
Vector3	targetSize	The target size.

OnStageConnection(int)

Called after the view has been connected to the stage.
When a view is connected, it will be directly or indirectly parented to the root view.
The root view is provided automatically by Tizen.NUI.Stage, and is always considered to be connected.
When the parent of a set of views is connected to the stage, then all of the children will receive this callback.

Declaration

public virtual void OnStageConnection(int depth)

Parameters

Type	Name	Description
int	depth	The depth in the hierarchy for the view.

OnStageDisconnection()

Called after the view has been disconnected from the stage.
If a view is disconnected, it either has no parent, or is parented to a disconnected view.
When the parent of a set of views is disconnected to the stage, then all of the children will receive this callback, starting with the leaf views.

Declaration

public virtual void OnStageDisconnection()

OnStyleChange(StyleManager, StyleChangeType)

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

Declaration

public virtual void OnStyleChange(StyleManager styleManager, StyleChangeType change)

Parameters

Type	Name	Description
StyleManager	styleManager	The StyleManager object.
StyleChangeType	change	Information denoting what has changed.

OnTap(TapGesture)

Called whenever a tap gesture is detected on this control.
This should be overridden by deriving classes when tap detection is enabled.
There is no default behavior with a tap.
Tap detection should be enabled via EnableGestureDetection().

Declaration

public virtual void OnTap(TapGesture tap)

Parameters

Type	Name	Description
TapGesture	tap	The tap gesture.

OnTouch(Touch)

Called after a touch event is received by the owning view.
CustomViewBehaviour.REQUIRES_TOUCH_EVENTS must be enabled during construction. See CustomView(ViewWrapperImpl.CustomViewBehaviour behaviour).

Declaration

public virtual bool OnTouch(Touch touch)

Parameters

Type	Name	Description
Touch	touch	The touch event.

Returns

Type	Description
bool	True if the event should be consumed.

OnWheel(Wheel)

Called after a wheel event is received by the owning view.
CustomViewBehaviour.REQUIRES_WHEEL_EVENTS must be enabled during construction. See CustomView(ViewWrapperImpl.CustomViewBehaviour behaviour).

Declaration

public virtual bool OnWheel(Wheel wheel)

Parameters

Type	Name	Description
Wheel	wheel	The wheel event.

Returns

Type	Description
bool	True if the wheel event should be consumed.

RegisterVisual(int, VisualBase, bool)

Registers a visual by the property index, linking a view to visual when required.
In the case of the visual being a view or control deeming visual not required, then the visual should be an empty handle.
If enabled is false, then the visual is not set on the stage until enabled by the derived class.

Declaration

protected void RegisterVisual(int index, VisualBase visual, bool enabled)

Parameters

Type	Name	Description
int	index	The property index of the visual used to reference visual.
VisualBase	visual	The visual to register.
bool	enabled	False if derived class wants to control when the visual is set on the stage.

RegisterVisual(int, VisualBase)

Registers a visual by property index, linking a view to visual when required.
In the case of the visual being a view or control deeming visual not required, then the visual should be an empty handle.
No parenting is done during registration, this should be done by a derived class.

Declaration

protected void RegisterVisual(int index, VisualBase visual)

Parameters

Type	Name	Description
int	index	The property index of the visual used to reference visual.
VisualBase	visual	The visual to register.

RelayoutDependentOnChildren()

Determines if this view is dependent on it's children for relayout from the base class.

Declaration

public virtual bool RelayoutDependentOnChildren()

Returns

Type	Description
bool	Return true if the view is dependent on it's children.

RelayoutDependentOnChildren(DimensionType)

Determines if this view is dependent on it's children for relayout.

Declaration

public virtual bool RelayoutDependentOnChildren(DimensionType dimension)

Parameters

Type	Name	Description
DimensionType	dimension	The dimension(s) to check for.

Returns

Type	Description
bool	Return if the view is dependent on it's children.

RelayoutDependentOnChildrenBase()

Determines if this view is dependent on it's children for relayout from the base class.

Declaration

protected bool RelayoutDependentOnChildrenBase()

Returns

Type	Description
bool	Return if the view is dependent on it's children.

RelayoutDependentOnChildrenBase(DimensionType)

Determines if this view is dependent on it's children for relayout from the base class.

Declaration

protected bool RelayoutDependentOnChildrenBase(DimensionType dimension)

Parameters

Type	Name	Description
DimensionType	dimension	The dimension(s) to check for.

Returns

Type	Description
bool	Return if the view is dependent on it's children.

RelayoutRequest()

Requests a relayout, which means performing a size negotiation on this view, its parent, and children (and potentially whole scene).
This method can also be called from a derived class every time it needs a different size.
At the end of event processing, the relayout process starts and all controls which requested relayout will have their sizes (re)negotiated.
It can be called multiple times; the size negotiation is still only performed once, i.e., there is no need to keep track of this in the calling side.

Declaration

protected void RelayoutRequest()

SetBackground(PropertyMap)

Sets the background with a property map.

Declaration

public void SetBackground(PropertyMap map)

Parameters

Type	Name	Description
PropertyMap	map	The background property map.

UnregisterVisual(int)

Erases the entry matching the given index from the list of registered visuals.

Declaration

protected void UnregisterVisual(int index)

Parameters

Type	Name	Description
int	index	The property index of the visual used to reference visual.

Implements

System.IDisposable