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Class com.sun.java.swing.text.ParagraphView

java.lang.Object
   |
   +----com.sun.java.swing.text.View
           |
           +----com.sun.java.swing.text.CompositeView
                   |
                   +----com.sun.java.swing.text.BoxView
                           |
                           +----com.sun.java.swing.text.ParagraphView

public class ParagraphView

extends BoxView

See Also:

View

ParagraphView(Element, ViewFactory)

Constructs a ParagraphView for the given element.

changedUpdate(DocumentEvent, Shape, ViewFactory)

Gives notification from the document that attributes were changed in a location that this view is responsible for.

getAlignment(int)

Determines the desired alignment for this view along an axis.

getPreferredSpan(int)

Determines the preferred span for this view along an axis.

getResizeWeight(int)

Gets the resize weight.

getViewAtPosition(int, Rectangle)

Fetches the child view that represents the given position in the model.

insertUpdate(DocumentEvent, Shape, ViewFactory)

Gives notification that something was inserted into the document in a location that this view is responsible for.

layout(int, int)

Lays out the children.

removeUpdate(DocumentEvent, Shape, ViewFactory)

Gives notification that something was removed from the document in a location that this view is responsible for.

 public ParagraphView(Element elem,
                      ViewFactory f)

Constructs a ParagraphView for the given element.

Parameters:

elem - the element that this view is responsible for

f - the factory to use to create views of the elements that are children of the element this view is responsible for

 public float getPreferredSpan(int axis)

Determines the preferred span for this view along an axis. For the paragraph it's whatever it was formated to along the x axis and whatever the box calculation is for the y axis.

Parameters:

axis - may be either X_AXIS or Y_AXIS

Returns:

s the span the view would like to be rendered into. 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

Overrides:

getPreferredSpan in class BoxView

 public float getAlignment(int axis)

Determines the desired alignment for this view along an axis. This is implemented to give the alignment to the center of the first row along the y axis, and the default along the x axis.

Parameters:

axis - may be either X_AXIS or Y_AXIS

Returns:

s the desired alignment. This should be a value between 0.0 and 1.0 where 0 indicates alignment at the origin and 1.0 indicates alignment to the full span away from the origin. An alignment of 0.5 would be the center of the view.

Overrides:

getAlignment in class BoxView

 public int getResizeWeight(int axis)

Gets the resize weight.

Parameters:

axis - may be wither X_AXIS or Y_AXIS

Returns:

the weight

Throws: IllegalArgumentException

for an invalid axis

Overrides:

getResizeWeight in class BoxView

 public void insertUpdate(DocumentEvent changes,
                          Shape a,
                          ViewFactory f)

Gives notification that something was inserted into the document in a location that this view is responsible for.

Parameters:

changes - the change information from the associated document

a - the current allocation of the view

f - the factory to use to rebuild if the view has children

Overrides:

insertUpdate in class BoxView

See Also:

insertUpdate

 public void removeUpdate(DocumentEvent changes,
                          Shape a,
                          ViewFactory f)

Gives notification that something was removed from the document in a location that this view is responsible for.

Parameters:

changes - the change information from the associated document

a - the current allocation of the view

f - the factory to use to rebuild if the view has children

Overrides:

removeUpdate in class BoxView

See Also:

removeUpdate

 public void changedUpdate(DocumentEvent changes,
                           Shape a,
                           ViewFactory f)

Gives notification from the document that attributes were changed in a location that this view is responsible for.

Parameters:

changes - the change information from the associated document

a - the current allocation of the view

f - the factory to use to rebuild if the view has children

Overrides:

changedUpdate in class BoxView

See Also:

changedUpdate

 protected View getViewAtPosition(int pos,
                                  Rectangle a)

Fetches the child view that represents the given position in the model. This is implemented to walk through the children looking for a range that contains the given position. In this view the children do not have a one to one mapping with the child elements.

Parameters:

pos - the search position

a - the allocation to the box on entry, and the allocation of the view containing the position on exit

Returns:

s the view representing the given position, or null if there isn't one

Overrides:

getViewAtPosition in class CompositeView

 protected void layout(int width,
                       int height)

Lays out the children. If the layout span has changed, the rows are rebuilt. The superclass functionality is called after checking and possibly rebuilding the rows. If the height has changed, the preferenceChanged method is called on the parent since the vertical preference is rigid.

Parameters:

width - the width to lay out against. This is the width inside of the inset area.

height - the height to lay out against (not used by paragraph, but used by the superclass). This is the height inside of the inset area.

Overrides:

layout in class BoxView

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