public class ParagraphView extends ParagraphView
Displays the a paragraph, and uses css attributes for its configuration.
layoutPool, layoutSpan, strategy
BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS
BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST
public ParagraphView(Element elem)
Constructs a ParagraphView for the given element.
elem- the element that this view is responsible for
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 AttributeSet getAttributes()
Fetches the attributes to use when rendering. This is implemented to multiplex the attributes specified in the model with a StyleSheet.
protected void setPropertiesFromAttributes()
Sets up the paragraph from css attributes instead of the values found in StyleConstants (i.e. which are used by the superclass). Since
protected StyleSheet getStyleSheet()
protected SizeRequirements calculateMinorAxisRequirements(int axis, SizeRequirements r)
Calculate the needs for the paragraph along the minor axis.
If size requirements are explicitly specified for the paragraph, use that requirements. Otherwise, use the requirements of the superclass
axis parameter is neither
IllegalArgumentException is thrown. If the
r parameter is
null, a new
SizeRequirements object is created, otherwise the supplied
SizeRequirements object is returned.
axis- the minor axis
r- the input
IllegalArgumentException- if the
axisparameter is invalid
public boolean isVisible()
Indicates whether or not this view should be displayed. If none of the children wish to be displayed and the only visible child is the break that ends the paragraph, the paragraph will not be considered visible. Otherwise, it will be considered visible and return true.
public void paint(Graphics g, Shape a)
Renders using the given rendering surface and area on that surface. This is implemented to delegate to the superclass after stashing the base coordinate for tab calculations.
g- the rendering surface to use
a- the allocated region to render into
public float getPreferredSpan(int axis)
Determines the preferred span for this view. Returns 0 if the view is not visible, otherwise it calls the superclass method to get the preferred span. axis.
axis- may be either View.X_AXIS or View.Y_AXIS
public float getMinimumSpan(int axis)
Determines the minimum span for this view along an axis. Returns 0 if the view is not visible, otherwise it calls the superclass method to get the minimum span.
axis- may be either
public float getMaximumSpan(int axis)
Determines the maximum span for this view along an axis. Returns 0 if the view is not visible, otherwise it calls the superclass method ot get the maximum span.
axis- may be either
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