Scroll Arrangement Handlers (v2+)

https://aix.colintree.cn/en/extensions/ScrollArrangementHandlers.html   This extension package included two extensions. Horizontal Scroll Arrangement Handler(HorizontalScrollHandler) AND Vertical Scroll Arrangement Handler(VerticalScrollHandler).

• Update on 2017.12.25 (Version 3)
  • Fixed that the events of VerticalScrollHandler are not called when it should be called.
  • Fixed that event ScrollChanged of VerticalScrollHandler provides a incorrect data
  • Fixed that ScrollPosition, MaxScrollPosition in different unit (i mess up android dx & appinventor px before) and related events should works well now (like ReachBottom)
  • Fixed that OverScrollMode does not affect the actual behaviour (for both Vertical and Horizontal)
  • Added Overscroll events
  • Merry Christmas!
• Update on 2017.9.29 (Version 2)
  • Fixed problem that names of methods & events not match the standard. (Extension renamed to avoid confusing)
  • Component icons added
  • FadingEdgeEnabled (Property)
  • OverScrollMode (Property)
  • ScrollBarEnabled (Property)
  • UserControl (Property)
  • MaxScrollPosition (Property)
  • ScrollPosition (Property)
• Update on 2017.8.26:
  • Added TouchUp (Event)

Horizontal Scroll Arrangement Handler (HorizontalScrollHandler)

h-Events

• OverScrollLeft (dragged leftward)

• OverScrollRight (dragged rightward)
• ReachLeftEnd
• ReachRightEnd
• ScrollChanged
• TouchDown
• TouchUp

h-Methods

• ArrowScrollLeftward (half-width)

• ArrowScrollRightward (half-width)
• PageScrollLeftward (full-width)
• PageScrollRightward (full-width)
• RegisterScrollView
• ScrollBy
• ScrollLeftEnd
• ScrollRightEnd
• ScrollTo
• SmoothScrollBy
• SmoothScrollTo

• parameters:
  • px – the displacement of scrolling. positive if scrolling rightward, and negative if scrolling leftward

h-Properties

• FadingEdgeEnabled

• MaxScrollPosition
• OverScrollMode
  • 0 – Always allow a user to over-scroll this view, provided it is a view that can scroll.
  • 1 (default) – Allow a user to over-scroll this view only if the content is large enough to meaningfully scroll, provided it is a view that can scroll.
  • 2 – Never allow a user to over-scroll this view.
  • (This may looks different in different version of system)

• ScrollBarEnabled

• ScrollPosition – current scroll position
• UserControl – Allow user to drag the scroll arrangement (or not)

Vertical Scroll Arrangement Handler (VerticalScrollHandler)

v-Events

• OverScrollDown (dragged downward)

• OverScrollUp (dragged upward)
• ReachBottom
• ReachTop
• ScrollChanged
• TouchDown
• TouchUp

v-Methods

• ArrowScrollDownward

• ArrowScrollUpward
• PageScrollDownward
• PageScrollUpward
• RegisterScrollView
• ScrollBottom
• ScrollBy
• ScrollTo
• ScrollTop
• SmoothScrollBy
• SmoothScrollTo

• parameters:
  • px – the displacement of scrolling. positive if scrolling downward, and negative if scrolling upward

v-Properties

• FadingEdgeEnabled

• MaxScrollPosition
• OverScrollMode
  • 0 – Always allow a user to over-scroll this view, provided it is a view that can scroll.
  • 1 (default) – Allow a user to over-scroll this view only if the content is large enough to meaningfully scroll, provided it is a view that can scroll.
  • 2 – Never allow a user to over-scroll this view.
  • (This may looks different in different version of system)

• ScrollBarEnabled

• ScrollPosition
• UserControl – Allow user to drag the scroll arrangement (or not)