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.
C#Copypublic abstract class FlexibleViewLayoutManager : Disposable
- Inheritance
- Derived
Properties
ChildCount
Return the current number of child views attached to the parent FlexibleView.
Declaration
C#Copypublic int ChildCount { get; }
Property Value
| Type | Description |
|---|---|
| Int32 |
Declaration
C#Copypublic int FocusPosition { get; }
Property Value
| Type | Description |
|---|---|
| Int32 |
Declaration
C#Copypublic float Height { get; }
Property Value
| Type | Description |
|---|---|
| Single |
Declaration
C#Copypublic int ItemCount { get; }
Property Value
| Type | Description |
|---|---|
| Int32 |
Declaration
C#Copypublic int PaddingBottom { get; }
Property Value
| Type | Description |
|---|---|
| Int32 |
Declaration
C#Copypublic int PaddingLeft { get; }
Property Value
| Type | Description |
|---|---|
| Int32 |
Declaration
C#Copypublic int PaddingRight { get; }
Property Value
| Type | Description |
|---|---|
| Int32 |
Declaration
C#Copypublic int PaddingTop { get; }
Property Value
| Type | Description |
|---|---|
| Int32 |
Declaration
C#Copypublic float Width { get; }
Property Value
| Type | Description |
|---|---|
| Single |
Methods
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
C#Copypublic void AddView(FlexibleViewViewHolder holder)
Parameters
| Type | Name | Description |
|---|---|---|
| FlexibleViewViewHolder | holder | view to add |
AddView(FlexibleViewViewHolder, Int32)
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
C#Copypublic void AddView(FlexibleViewViewHolder holder, int index)
Parameters
| Type | Name | Description |
|---|---|---|
| FlexibleViewViewHolder | holder | view to add |
| Int32 | index | index to add child at |
CanScrollHorizontally()
Query if horizontal scrolling is currently supported. The default implementation returns false.
Declaration
C#Copypublic virtual bool CanScrollHorizontally()
Returns
| Type | Description |
|---|---|
| Boolean |
CanScrollVertically()
Query if vertical scrolling is currently supported. The default implementation returns false.
Declaration
C#Copypublic virtual bool CanScrollVertically()
Returns
| Type | Description |
|---|---|
| Boolean |
Declaration
C#Copypublic void ChangeFocus(int focusPosition)
Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | focusPosition | the newly focus position |
Declaration
C#Copypublic virtual float ComputeScrollExtent()
Returns
| Type | Description |
|---|---|
| Single |
Declaration
C#Copypublic virtual float ComputeScrollOffset()
Returns
| Type | Description |
|---|---|
| Single |
Declaration
C#Copypublic virtual float ComputeScrollRange()
Returns
| Type | Description |
|---|---|
| Single |
Declaration
C#Copyprotected override void Dispose(DisposeTypes type)
Parameters
| Type | Name | Description |
|---|---|---|
| DisposeTypes | type | Dispose type. |
Overrides
Declaration
C#Copyprotected virtual FlexibleViewViewHolder FindFirstVisibleItemView()
Returns
| Type | Description |
|---|---|
| FlexibleViewViewHolder |
FindItemViewByPosition(Int32)
Finds the view which represents the given adapter position.
Declaration
C#Copypublic FlexibleViewViewHolder FindItemViewByPosition(int position)
Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | position | adapter position |
Returns
| Type | Description |
|---|---|
| FlexibleViewViewHolder |
Declaration
C#Copyprotected virtual FlexibleViewViewHolder FindLastVisibleItemView()
Returns
| Type | Description |
|---|---|
| FlexibleViewViewHolder |
Declaration
C#Copypublic FlexibleViewViewHolder GetChildAt(int index)
Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | index | child index |
Returns
| Type | Description |
|---|---|
| FlexibleViewViewHolder |
GetNextPosition(Int32, FlexibleViewLayoutManager.Direction)
Retrieves a position that neighbor to current position by direction.
Declaration
C#Copyprotected abstract int GetNextPosition(int position, FlexibleViewLayoutManager.Direction direction)
Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | position | The anchor adapter position |
| FlexibleViewLayoutManager.Direction | direction | The direction. |
Returns
| Type | Description |
|---|---|
| Int32 |
LayoutChild(FlexibleViewViewHolder, Single, Single, Single, Single)
Lay out the given child view within the FlexibleView using coordinates that include view margins.
Declaration
C#Copypublic void LayoutChild(FlexibleViewViewHolder child, float left, float top, float width, float height)
Parameters
| Type | Name | Description |
|---|---|---|
| FlexibleViewViewHolder | child | Child to lay out |
| Single | left | Left edge, with item view left margin included |
| Single | top | Top edge, with item view top margin included |
| Single | width | Width, with item view left and right margin included |
| Single | height | Height, with item view top and bottom margin included |
OffsetChildrenHorizontal(Single, Boolean)
Offset all child views attached to the parent FlexibleView by dx pixels along the horizontal axis.
Declaration
C#Copypublic void OffsetChildrenHorizontal(float dx, bool immediate)
Parameters
| Type | Name | Description |
|---|---|---|
| Single | dx | Pixels to offset by |
| Boolean | immediate | specify if the offset need animation |
OffsetChildrenVertical(Single, Boolean)
Offset all child views attached to the parent FlexibleView by dy pixels along the vertical axis.
Declaration
C#Copypublic void OffsetChildrenVertical(float dy, bool immediate)
Parameters
| Type | Name | Description |
|---|---|---|
| Single | dy | Pixels to offset by |
| Boolean | immediate | specify if the offset need animation |
OnLayoutChildren(FlexibleViewRecycler)
Layout all relevant child views from the given adapter.
Declaration
C#Copypublic abstract void OnLayoutChildren(FlexibleViewRecycler recycler)
Parameters
| Type | Name | Description |
|---|---|---|
| FlexibleViewRecycler | recycler | Recycler to use for fetching potentially cached views for a position |
Declaration
C#Copypublic virtual void OnLayoutCompleted()
RecycleChildren(FlexibleViewRecycler, Int32, Int32, Boolean)
Recycles children between given indices..
Declaration
C#Copypublic void RecycleChildren(FlexibleViewRecycler recycler, int startIndex, int endIndex, bool immediate)
Parameters
| Type | Name | Description |
|---|---|---|
| FlexibleViewRecycler | recycler | Recycler to recycle views into |
| Int32 | startIndex | inclusive |
| Int32 | endIndex | exclusive |
| Boolean | immediate | recycle immediately or add to pending list and recycle later. |
RelayoutRequest()
Calls {@code FlexibleView#RelayoutRequest} on the underlying FlexibleView.
Declaration
C#Copypublic void RelayoutRequest()
Declaration
C#Copypublic void RemoveAndRecycleViewAt(int index, FlexibleViewRecycler recycler)
Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | 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
C#Copypublic void ScrapAttachedViews(FlexibleViewRecycler recycler)
Parameters
| Type | Name | Description |
|---|---|---|
| FlexibleViewRecycler | recycler | Recycler to scrap views into |
ScrollHorizontallyBy(Single, FlexibleViewRecycler, Boolean)
Scroll horizontally by dy pixels in screen coordinates.
Declaration
C#Copypublic virtual float ScrollHorizontallyBy(float dy, FlexibleViewRecycler recycler, bool immediate)
Parameters
| Type | Name | Description |
|---|---|---|
| Single | 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 |
| Boolean | immediate | Specify if the scroll need animation |
Returns
| Type | Description |
|---|---|
| Single |
Declaration
C#Copypublic virtual void ScrollToPosition(int position)
Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | position | Scroll to this adapter position |
ScrollToPositionWithOffset(Int32, Int32)
Scroll to the specified adapter position with the given offset from resolved layout start.
Declaration
C#Copypublic virtual void ScrollToPositionWithOffset(int position, int offset)
Parameters
| Type | Name | Description |
|---|---|---|
| Int32 | position | Scroll to this adapter position |
| Int32 | offset | The distance (in pixels) between the start edge of the item view and start edge of the FlexibleView. |
ScrollVerticallyBy(Single, FlexibleViewRecycler, Boolean)
Scroll vertically by dy pixels in screen coordinates.
Declaration
C#Copypublic virtual float ScrollVerticallyBy(float dy, FlexibleViewRecycler recycler, bool immediate)
Parameters
| Type | Name | Description |
|---|---|---|
| Single | 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 |
| Boolean | immediate | Specify if the scroll need animation |
Returns
| Type | Description |
|---|---|
| Single |