javax.swing.text.html.BlockView

public class javax.swing.text.html

BlockView

Java SE 6

Extends: View > CompositeView > BoxView

Extended by: ListView

A view implementation to display a block (as a box) with CSS specifications.

version

1.38 02/14/06

Constructors

public

BlockView(Element elem, int axis)
Creates a new view that represents an html box. This can be used for a number of elements.

elem	the element to create a view for
axis	either View.X_AXIS or View.Y_AXIS

Methods

protected SizeRequirements

calculateMajorAxisRequirements(int axis, SizeRequirements r)
Calculate the requirements of the block along the major axis (i.e. the axis along with it tiles). This is implemented to provide the superclass behavior and then adjust it if the CSS width or height attribute is specified and applicable to the axis.

protected SizeRequirements

calculateMinorAxisRequirements(int axis, SizeRequirements r)
Calculate the requirements of the block along the minor axis (i.e. the axis orthoginal to the axis along with it tiles). This is implemented to provide the superclass behavior and then adjust it if the CSS width or height attribute is specified and applicable to the axis.

public void

changedUpdate(DocumentEvent changes, Shape a, ViewFactory f)

protected void

layoutMinorAxis(int targetSpan, int axis, int[] offsets, int[] spans)
Performs layout for the minor axis of the box (i.e. the axis orthoginal to the axis that it represents). The results of the layout (the offset and span for each children) are placed in the given arrays which represent the allocations to the children along the minor axis.

targetSpan	the total span given to the view, which whould be used to layout the childre.
axis	the axis being layed out
offsets	the offsets from the origin of the view for each of the child views; this is a return value and is filled in by the implementation of this method
spans	the span of each child view; this is a return value and is filled in by the implementation of this method

public void

paint(Graphics g, Shape allocation)
Renders using the given rendering surface and area on that surface. This is implemented to delegate to the css box painter to paint the border and background prior to the interior.

g	the rendering surface to use
allocation	the allocated region to render into
See also	paint

Properties

public float

getAlignment(int axis)
Gets the alignment.

axis	may be either X_AXIS or Y_AXIS
return	the alignment

public AttributeSet

getAttributes()
Fetches the attributes to use when rendering. This is implemented to multiplex the attributes specified in the model with a StyleSheet.

public float

getMaximumSpan(int axis)
Determines the maximum span for this view along an axis.

axis	may be either `View.X_AXIS` or `View.Y_AXIS`
return	the span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the viewthe span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the view
Throws	IllegalArgumentException: for an invalid axis type

public float

getMinimumSpan(int axis)
Determines the minimum span for this view along an axis.

axis	may be either `View.X_AXIS` or `View.Y_AXIS`
return	the span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the viewthe span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the view
Throws	IllegalArgumentException: for an invalid axis type

public void

setParent(View parent)
Establishes the parent view for this view. This is guaranteed to be called before any other methods if the parent view is functioning properly.

This is implemented to forward to the superclass as well as call the #setPropertiesFromAttributes() method to set the paragraph properties from the css attributes. The call is made at this time to ensure the ability to resolve upward through the parents view attributes.

parent the new parent, or null if the view is being removed from a parent it was previously added to

public float

getPreferredSpan(int axis)
Determines the preferred span for this view along an axis.

axis	may be either `View.X_AXIS` or `View.Y_AXIS`
return	the span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the viewthe span the view would like to be rendered into >= 0; typically the view is told to render into the span that is returned, although there is no guarantee; the parent may choose to resize or break the view
Throws	IllegalArgumentException: for an invalid axis type

protected void

setPropertiesFromAttributes()
Update any cached values that come from attributes.

public int

getResizeWeight(int axis)
Gets the resize weight.

axis	may be either X_AXIS or Y_AXIS
return	the weight
Throws	IllegalArgumentException: for an invalid axis

protected StyleSheet

getStyleSheet()

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Java SE 6