Package totalcross.ui

Class DynamicScrollContainer.DataSource

java.lang.Object

totalcross.ui.DynamicScrollContainer.DataSource

Enclosing class:

DynamicScrollContainer

public static class DynamicScrollContainer.DataSource
extends java.lang.Object

This class is responsible for serving up the DynamicScrollContainer.AbstractViews to display on a DynamicScrollContainer. You must populate the DynamicScrollContainer.DataSource with all the views you want to display before passing it to the DynamicScrollContainer

Field Summary

Fields

Modifier and Type	Field	Description
protected Vector	views

Constructor Summary

Constructors

Constructor	Description
DataSource()
DataSource(int viewCount)	Create a DynamicScrollContainer.DataSource and allocate memory for viewCount views to be stored

Method Summary

Modifier and Type	Method	Description
void	addView(DynamicScrollContainer.AbstractView view)	Adds a DynamicScrollContainer.AbstractView to the datasource if it does not already exist.
int	getTotalScrollHeight(int scrollContainerWidth)	Returns the total scrollable height that all DynamicScrollContainer.AbstractViews together will take up. This is calculated based on each DynamicScrollContainer.AbstractView height and is called when a DynamicScrollContainer.DataSource is set on a DynamicScrollContainer.DataSource or the DynamicScrollContainer detects screen rotation.
DynamicScrollContainer.AbstractView	getView(int no)	Returns view number no contained within this DynamicScrollContainer.DataSource
Vector	getVisibleViewsVec(int yStart, int yEnd, int scrollDirection)	Returns a Vector containing the DynamicScrollContainer.AbstractViews that are visible in the Y viewing area of DynamicScrollContainer between y position yStart and yEnd
void	removeView(DynamicScrollContainer.AbstractView view)	Removes the DynamicScrollContainer.AbstractView from the datasource.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

views

protected Vector views

Constructor Detail

DataSource

public DataSource()

DataSource

public DataSource(int viewCount)

Create a DynamicScrollContainer.DataSource and allocate memory for viewCount views to be stored

Parameters:

viewCount -

Method Detail

getTotalScrollHeight

public int getTotalScrollHeight(int scrollContainerWidth)

Returns the total scrollable height that all DynamicScrollContainer.AbstractViews together will take up.
This is calculated based on each DynamicScrollContainer.AbstractView height and is called when a DynamicScrollContainer.DataSource is set on a DynamicScrollContainer.DataSource or the DynamicScrollContainer detects screen rotation.

addView

public void addView(DynamicScrollContainer.AbstractView view)

Adds a DynamicScrollContainer.AbstractView to the datasource if it does not already exist.
This does not automatically recalculate the view height

Parameters:

view -

removeView

public void removeView(DynamicScrollContainer.AbstractView view)

Removes the DynamicScrollContainer.AbstractView from the datasource.
This does not automatically recalculate the view height

Parameters:

view -

getVisibleViewsVec

public Vector getVisibleViewsVec(int yStart,
                                 int yEnd,
                                 int scrollDirection)

Returns a Vector containing the DynamicScrollContainer.AbstractViews that are visible in the Y viewing area of DynamicScrollContainer between y position yStart and yEnd

Parameters:

yStart -

yEnd -

getView

public DynamicScrollContainer.AbstractView getView(int no)

Returns view number no contained within this DynamicScrollContainer.DataSource

Parameters:

no -