Class CustomView

Definition

Namespace:: Tizen.NUI.BaseComponents

Assembly:: Tizen.NUI.dll

API Level:: 3

CustomView provides some common functionality required by all views.


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public class CustomView : ViewWrapper, INotifyPropertyChanged, IDynamicResourceHandler, IElement, INameScope, IElementController, IDisposable, IResourcesProvider

Inheritance: System.Object

BindableObject

Tizen.NUI.Binding.Element

BaseHandle

Animatable

Container

View

ViewWrapper

CustomView

Derived: VisualView

VisualView

Spin

Spin

Implements: System.ComponentModel.INotifyPropertyChanged

System.IDisposable

Constructors

View Source

CustomView(String, CustomViewBehaviour)

Create an instance of customView.

Declaration


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public CustomView(string typeName, CustomViewBehaviour behaviour)

Parameters

Type	Name	Description
System.String	typeName	typename
CustomViewBehaviour	behaviour	CustomView Behaviour

API Level: 3

Properties

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FocusGroup

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

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public bool FocusGroup { get; set; }

Property Value

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

API Level: 3

View Source

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


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public bool FocusNavigationSupport { get; set; }

Property Value

Type	Description
Boolean

API Level: 3

Methods

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CalculateChildSize(View, DimensionType)

Calculates the size for a child.

Declaration


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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
System.Single	Return the calculated size for the given dimension. If more than one dimension is requested, just return the first one found.

API Level: 3

View Source

CalculateChildSizeBase(View, DimensionType)

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

Declaration


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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
System.Single	Return the calculated size for the given dimension. If more than one dimension is requested, just return the first one found.

API Level: 3

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CreateTransition(TransitionData)

Creates a transition effect on the control.

Declaration


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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.

API Level: 3

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EmitFocusSignal(Boolean)

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


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protected void EmitFocusSignal(bool focusGained)

Parameters

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

API Level: 3

View Source

EnableGestureDetection(Gesture.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


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public void EnableGestureDetection(Gesture.GestureType type)

Parameters

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

API Level: 3

View Source

EnableVisual(Int32, Boolean)

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


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protected void EnableVisual(int index, bool enable)

Parameters

Type	Name	Description
Int32	index	The property index of the visual, used to reference visual.
Boolean	enable	Flag set to enabled or disabled.

API Level: 3

View Source

GetHeightForWidth(Single)

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


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[Obsolete("This has been deprecated in API9 and will be removed in API11. Use HeightForWidth property instead.")]
public virtual float GetHeightForWidth(float width)

Parameters

Type	Name	Description
System.Single	width	Width to use

Returns

Type	Description
System.Single	The height based on the width

API Level: 3

View Source

GetHeightForWidthBase(Single)

Provides the view implementation of GetHeightForWidth.

Declaration


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protected float GetHeightForWidthBase(float width)

Parameters

Type	Name	Description
System.Single	width	The width to use.

Returns

Type	Description
System.Single	The height based on the width.

API Level: 3

View Source

GetNaturalSize()

Returns the natural size of the view.

Declaration


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public virtual Size2D GetNaturalSize()

Returns

Type	Description
Size2D	The view's natural size

API Level: 3

View Source

GetNextFocusableView(View, View.FocusDirection, Boolean)

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


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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.
Boolean	loopEnabled	Whether the focus movement should be looped within the control.

Returns

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

API Level: 3

View Source

GetVisual(Int32)

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


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protected VisualBase GetVisual(int index)

Parameters

Type	Name	Description
Int32	index	The property index of the visual used to reference visual.

Returns

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

API Level: 3

View Source

GetWidthForHeight(Single)

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


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[Obsolete("This has been deprecated since API9 and will be removed in API11. Use WidthForHeight property instead.")]
public virtual float GetWidthForHeight(float height)

Parameters

Type	Name	Description
System.Single	height	Height to use

Returns

Type	Description
System.Single	The width based on the width

API Level: 3

View Source

GetWidthForHeightBase(Single)

Provides the view implementation of GetWidthForHeight.

Declaration


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protected float GetWidthForHeightBase(float height)

Parameters

Type	Name	Description
System.Single	height	The height to use.

Returns

Type	Description
System.Single	The width based on the height.

API Level: 3

View Source

IsVisualEnabled(Int32)

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


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protected bool IsVisualEnabled(int index)

Parameters

Type	Name	Description
Int32	index	The property index of the visual.

Returns

Type	Description
Boolean	Whether visual is enabled or not.

API Level: 3

View Source

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


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public virtual void OnCalculateRelayoutSize(DimensionType dimension)

Parameters

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

API Level: 3

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OnChildAdd(View)

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

Declaration


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public virtual void OnChildAdd(View view)

Parameters

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

API Level: 3

View Source

OnChildRemove(View)

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

Declaration


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public virtual void OnChildRemove(View view)

Parameters

Type	Name	Description
View	view	The child being removed.

API Level: 3

View Source

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


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public virtual void OnFocusChangeCommitted(View commitedFocusableView)

Parameters

Type	Name	Description
View	commitedFocusableView	The commited focused view.

API Level: 3

View Source

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


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public virtual void OnFocusGained()

API Level: 3

View Source

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


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public virtual void OnFocusLost()

API Level: 3

View Source

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


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public virtual bool OnHover(Hover hover)

Parameters

Type	Name	Description
Hover	hover	The hover event.

Returns

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

API Level: 3

View Source

OnInitialize()

This method is called after the CustomView has been initialized.
After OnInitialize, the view will apply the style if it exists in the theme or it was given from constructor.
Derived classes should do any second phase initialization by overriding this method.

Declaration


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public virtual void OnInitialize()

API Level: 3

View Source

OnKey(Key)

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

Declaration


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public virtual bool OnKey(Key key)

Parameters

Type	Name	Description
Key	key	The key event.

Returns

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

API Level: 3

View Source

OnKeyboardEnter()

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

Declaration


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public virtual bool OnKeyboardEnter()

Returns

Type	Description
Boolean	True if this control supported this action.

API Level: 3

View Source

OnLayoutNegotiated(Single, DimensionType)

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

Declaration


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public virtual void OnLayoutNegotiated(float size, DimensionType dimension)

Parameters

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

API Level: 3

View Source

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


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public virtual void OnPan(PanGesture pan)

Parameters

Type	Name	Description
PanGesture	pan	The pan gesture.

API Level: 3

View Source

OnPropertySet(Int32, PropertyValue)

Called when the owning view property is set.

Declaration


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public virtual void OnPropertySet(int index, PropertyValue propertyValue)

Parameters

Type	Name	Description
Int32	index	The property index that was set.
PropertyValue	propertyValue	The value to set.

API Level: 3

View Source

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


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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.

API Level: 3

View Source

OnSceneConnection(Int32)

Called after the view has been connected to the scene.
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.Window, and is always considered to be connected.
When the parent of a set of views is connected to the scene, then all of the children will receive this callback.

Declaration


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public virtual void OnSceneConnection(int depth)

Parameters

Type	Name	Description
Int32	depth	The depth in the hierarchy for the view.

API Level: 8

View Source

OnSceneDisconnection()

Called after the view has been disconnected from the scene.
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 scene, then all of the children will receive this callback, starting with the leaf views.

Declaration


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public virtual void OnSceneDisconnection()

API Level: 8

View Source

OnSetResizePolicy(ResizePolicyType, DimensionType)

Notification for deriving classes.

Declaration


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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.

API Level: 3

View Source

OnSizeAnimation(Animation, Vector3)

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

Declaration


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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.

API Level: 3

View Source

OnSizeSet(Vector3)

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

Declaration


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public virtual void OnSizeSet(Vector3 targetSize)

Parameters

Type	Name	Description
Vector3	targetSize	The target size.

API Level: 3

View Source

OnStageConnection(Int32)

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


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[Obsolete("This has been deprecated since API8 and will be removed in API10. Use OnSceneConnection instead.")]
public virtual void OnStageConnection(int depth)

Parameters

Type	Name	Description
Int32	depth	The depth in the hierarchy for the view.

API Level: 3

View Source

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


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[Obsolete("This has been deprecated since API8 and will be removed in API10. Use OnSceneDisconnection instead.")]
public virtual void OnStageDisconnection()

API Level: 3

View Source

OnStyleChange(StyleManager, StyleChangeType)

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

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[Obsolete("Deprecated in API9, Will be removed in API11.")]
public virtual void OnStyleChange(StyleManager styleManager, StyleChangeType change)

Parameters

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

API Level: 3

View Source

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


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public virtual void OnTap(TapGesture tap)

Parameters

Type	Name	Description
TapGesture	tap	The tap gesture.

API Level: 3

View Source

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


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public virtual bool OnTouch(Touch touch)

Parameters

Type	Name	Description
Touch	touch	The touch event.

Returns

Type	Description
Boolean	True if the event should be consumed.

API Level: 3

View Source

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


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public virtual bool OnWheel(Wheel wheel)

Parameters

Type	Name	Description
Wheel	wheel	The wheel event.

Returns

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

API Level: 3

View Source

RegisterVisual(Int32, 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


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protected void RegisterVisual(int index, VisualBase visual)

Parameters

Type	Name	Description
Int32	index	The property index of the visual used to reference visual.
VisualBase	visual	The visual to register.

API Level: 3

View Source

RegisterVisual(Int32, VisualBase, Boolean)

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


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

Parameters

Type	Name	Description
Int32	index	The property index of the visual used to reference visual.
VisualBase	visual	The visual to register.
Boolean	enabled	False if derived class wants to control when the visual is set on the stage.

API Level: 3

View Source

RelayoutDependentOnChildren()

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

Declaration


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public virtual bool RelayoutDependentOnChildren()

Returns

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

API Level: 3

View Source

RelayoutDependentOnChildren(DimensionType)

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

Declaration


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public virtual bool RelayoutDependentOnChildren(DimensionType dimension)

Parameters

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

Returns

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

API Level: 3

View Source

RelayoutDependentOnChildrenBase()

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

Declaration


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protected bool RelayoutDependentOnChildrenBase()

Returns

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

API Level: 3

View Source

RelayoutDependentOnChildrenBase(DimensionType)

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

Declaration


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protected bool RelayoutDependentOnChildrenBase(DimensionType dimension)

Parameters

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

Returns

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

API Level: 3

View Source

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


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protected void RelayoutRequest()

API Level: 3

View Source

SetBackground(PropertyMap)

Sets the background with a property map.

Declaration


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public void SetBackground(PropertyMap map)

Parameters

Type	Name	Description
PropertyMap	map	The background property map.

API Level: 3

View Source

UnregisterVisual(Int32)

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

Declaration


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protected void UnregisterVisual(int index)

Parameters

Type	Name	Description
Int32	index	The property index of the visual used to reference visual.

API Level: 3

Implements

System.ComponentModel.INotifyPropertyChanged

System.IDisposable