Class FlexibleViewLayoutManager

Definition

Namespace:

Tizen.NUI.Components

Assembly:

Tizen.NUI.Components.dll

A FlexibleViewLayoutManager is responsible for measuring and positioning item views within a FlexibleView as well as determining the policy for when to recycle item views that are no longer visible to the user.

public abstract class FlexibleViewLayoutManager : Disposable

Inheritance

object

Disposable

FlexibleViewLayoutManager

Derived

LinearLayoutManager

LinearLayoutManager

Properties

ChildCount

Return the current number of child views attached to the parent FlexibleView.

Declaration

public int ChildCount { get; }

Property Value

Type	Description
int

FocusPosition

Gets the current focus position in adapter.

Declaration

public int FocusPosition { get; }

Property Value

Type	Description
int

Height

Return the height of the parent FlexibleView.

Declaration

public float Height { get; }

Property Value

Type	Description
float

ItemCount

Gets the datas count in data sets.

Declaration

public int ItemCount { get; }

Property Value

Type	Description
int

PaddingBottom

Return the bottom padding of the parent FlexibleView.

Declaration

public int PaddingBottom { get; }

Property Value

Type	Description
int

PaddingLeft

Return the left padding of the parent FlexibleView.

Declaration

public int PaddingLeft { get; }

Property Value

Type	Description
int

PaddingRight

Return the right padding of the parent FlexibleView.

Declaration

public int PaddingRight { get; }

Property Value

Type	Description
int

PaddingTop

Return the top padding of the parent FlexibleView.

Declaration

public int PaddingTop { get; }

Property Value

Type	Description
int

Width

Return the width of the parent FlexibleView.

Declaration

public float Width { get; }

Property Value

Type	Description
float

Methods

AddView(FlexibleViewViewHolder, int)

Add a view to the currently attached FlexibleView if needed.
FlexibleViewLayoutManagers should use this method to add views obtained from a FlexibleViewRecycler using getViewForPosition(int).

Declaration

public void AddView(FlexibleViewViewHolder holder, int index)

Parameters

Type	Name	Description
FlexibleViewViewHolder	holder	view to add
int	index	index to add child at

AddView(FlexibleViewViewHolder)

Add a view to the currently attached FlexibleView if needed.
FlexibleViewLayoutManagers should use this method to add views obtained from a FlexibleViewRecycler using getViewForPosition(int).

Declaration

public void AddView(FlexibleViewViewHolder holder)

Parameters

Type	Name	Description
FlexibleViewViewHolder	holder	view to add

CanScrollHorizontally()

Query if horizontal scrolling is currently supported. The default implementation returns false.

Declaration

public virtual bool CanScrollHorizontally()

Returns

Type	Description
bool

CanScrollVertically()

Query if vertical scrolling is currently supported. The default implementation returns false.

Declaration

public virtual bool CanScrollVertically()

Returns

Type	Description
bool

ChangeFocus(int)

Change the FlexibleViewViewHolder with focusPosition to focus.

Declaration

public void ChangeFocus(int focusPosition)

Parameters

Type	Name	Description
int	focusPosition	the newly focus position

ComputeScrollExtent()

Compute the extent of the scrollbar's thumb within the range.

Declaration

public virtual float ComputeScrollExtent()

Returns

Type	Description
float

ComputeScrollOffset()

Compute the offset of the scrollbar's thumb within the range.

Declaration

public virtual float ComputeScrollOffset()

Returns

Type	Description
float

ComputeScrollRange()

Compute the range that the scrollbar represents.

Declaration

public virtual float ComputeScrollRange()

Returns

Type	Description
float

Dispose(DisposeTypes)

Dispose FlexibleView and all children on it.

Declaration

protected override void Dispose(DisposeTypes type)

Parameters

Type	Name	Description
DisposeTypes	type	Dispose type.

Overrides

Disposable.Dispose(DisposeTypes)

FindFirstVisibleItemView()

Retrieves the first visible item view.

Declaration

protected virtual FlexibleViewViewHolder FindFirstVisibleItemView()

Returns

Type	Description
FlexibleViewViewHolder

FindItemViewByPosition(int)

Finds the view which represents the given adapter position.

Declaration

public FlexibleViewViewHolder FindItemViewByPosition(int position)

Parameters

Type	Name	Description
int	position	adapter position

Returns

Type	Description
FlexibleViewViewHolder

FindLastVisibleItemView()

Retrieves the last visible item view.

Declaration

protected virtual FlexibleViewViewHolder FindLastVisibleItemView()

Returns

Type	Description
FlexibleViewViewHolder

GetChildAt(int)

Return the child view at the given index.

Declaration

public FlexibleViewViewHolder GetChildAt(int index)

Parameters

Type	Name	Description
int	index	child index

Returns

Type	Description
FlexibleViewViewHolder

GetNextPosition(int, Direction)

Retrieves a position that neighbor to current position by direction.

Declaration

protected abstract int GetNextPosition(int position, FlexibleViewLayoutManager.Direction direction)

Parameters

Type	Name	Description
int	position	The anchor adapter position
FlexibleViewLayoutManager.Direction	direction	The direction.

Returns

Type	Description
int

LayoutChild(FlexibleViewViewHolder, float, float, float, float)

Lay out the given child view within the FlexibleView using coordinates that include view margins.

Declaration

public void LayoutChild(FlexibleViewViewHolder child, float left, float top, float width, float height)

Parameters

Type	Name	Description
FlexibleViewViewHolder	child	Child to lay out
float	left	Left edge, with item view left margin included
float	top	Top edge, with item view top margin included
float	width	Width, with item view left and right margin included
float	height	Height, with item view top and bottom margin included

OffsetChildrenHorizontal(float, bool)

Offset all child views attached to the parent FlexibleView by dx pixels along the horizontal axis.

Declaration

public void OffsetChildrenHorizontal(float dx, bool immediate)

Parameters

Type	Name	Description
float	dx	Pixels to offset by
bool	immediate	specify if the offset need animation

OffsetChildrenVertical(float, bool)

Offset all child views attached to the parent FlexibleView by dy pixels along the vertical axis.

Declaration

public void OffsetChildrenVertical(float dy, bool immediate)

Parameters

Type	Name	Description
float	dy	Pixels to offset by
bool	immediate	specify if the offset need animation

OnLayoutChildren(FlexibleViewRecycler)

Layout all relevant child views from the given adapter.

Declaration

public abstract void OnLayoutChildren(FlexibleViewRecycler recycler)

Parameters

Type	Name	Description
FlexibleViewRecycler	recycler	Recycler to use for fetching potentially cached views for a position

OnLayoutCompleted()

Called after a full layout calculation is finished.

Declaration

public virtual void OnLayoutCompleted()

RecycleChildren(FlexibleViewRecycler, int, int, bool)

Recycles children between given indices..

Declaration

public void RecycleChildren(FlexibleViewRecycler recycler, int startIndex, int endIndex, bool immediate)

Parameters

Type	Name	Description
FlexibleViewRecycler	recycler	Recycler to recycle views into
int	startIndex	inclusive
int	endIndex	exclusive
bool	immediate	recycle immediately or add to pending list and recycle later.

RelayoutRequest()

Calls {@code FlexibleView#RelayoutRequest} on the underlying FlexibleView.

Declaration

public void RelayoutRequest()

RemoveAndRecycleViewAt(int, FlexibleViewRecycler)

Declaration

public void RemoveAndRecycleViewAt(int index, FlexibleViewRecycler recycler)

Parameters

Type	Name	Description
int	index
FlexibleViewRecycler	recycler

ScrapAttachedViews(FlexibleViewRecycler)

Temporarily detach and scrap all currently attached child views. Views will be scrapped into the given FlexibleViewRecycler. The FlexibleViewRecycler may prefer to reuse scrap views before other views that were previously recycled.

Declaration

public void ScrapAttachedViews(FlexibleViewRecycler recycler)

Parameters

Type	Name	Description
FlexibleViewRecycler	recycler	Recycler to scrap views into

ScrollHorizontallyBy(float, FlexibleViewRecycler, bool)

Scroll horizontally by dy pixels in screen coordinates.

Declaration

public virtual float ScrollHorizontallyBy(float dy, FlexibleViewRecycler recycler, bool immediate)

Parameters

Type	Name	Description
float	dy	distance to scroll in pixels. Y increases as scroll position approaches the top.
FlexibleViewRecycler	recycler	Recycler to use for fetching potentially cached views for a position
bool	immediate	Specify if the scroll need animation

Returns

Type	Description
float

ScrollToPosition(int)

Scroll the FlexibleView to make the position visible.

Declaration

public virtual void ScrollToPosition(int position)

Parameters

Type	Name	Description
int	position	Scroll to this adapter position

ScrollToPositionWithOffset(int, int)

Scroll to the specified adapter position with the given offset from resolved layout start.

Declaration

public virtual void ScrollToPositionWithOffset(int position, int offset)

Parameters

Type	Name	Description
int	position	Scroll to this adapter position
int	offset	The distance (in pixels) between the start edge of the item view and start edge of the FlexibleView.

ScrollVerticallyBy(float, FlexibleViewRecycler, bool)

Scroll vertically by dy pixels in screen coordinates.

Declaration

public virtual float ScrollVerticallyBy(float dy, FlexibleViewRecycler recycler, bool immediate)

Parameters

Type	Name	Description
float	dy	distance to scroll in pixels. Y increases as scroll position approaches the top.
FlexibleViewRecycler	recycler	Recycler to use for fetching potentially cached views for a position
bool	immediate	Specify if the scroll need animation

Returns

Type	Description
float

Extension Methods

EXamlExtensions.LoadFromEXamlByRelativePath<T>(T, string)

Extensions.LoadFromXaml<TXaml>(TXaml, string)

Extensions.LoadFromXaml<TXaml>(TXaml, Type)

Extensions.LoadFromXamlFile<TXaml>(TXaml, string)