javax.swing.text

Class FieldView

java.lang.Object

javax.swing.text.View

javax.swing.text.PlainView

javax.swing.text.FieldView

All Implemented Interfaces:

SwingConstants, TabExpander

Direct Known Subclasses:

PasswordView

public class FieldView
extends PlainView

Field Summary

Fields inherited from class javax.swing.text.PlainView

metrics

Fields inherited from class javax.swing.text.View

BadBreakWeight, ExcellentBreakWeight, ForcedBreakWeight, GoodBreakWeight, X_AXIS, Y_AXIS

Fields inherited from interface javax.swing.SwingConstants

BOTTOM, CENTER, EAST, HORIZONTAL, LEADING, LEFT, NEXT, NORTH, NORTH_EAST, NORTH_WEST, PREVIOUS, RIGHT, SOUTH, SOUTH_EAST, SOUTH_WEST, TOP, TRAILING, VERTICAL, WEST

Constructor Summary

Constructors

Constructor and Description
FieldView(Element elem)

Method Summary

Methods

Modifier and Type	Method and Description
protected Shape	adjustAllocation(Shape shape) Vertically centers the single line of text within the bounds of the input shape.
void	changedUpdate(DocumentEvent ev, Shape shape, ViewFactory vf) This method is called when attributes were changed in the Document in a location that this view is responsible for.
protected FontMetrics	getFontMetrics()
float	getPreferredSpan(int axis) Returns the preferred span along the specified axis.
int	getResizeWeight(int axis) Returns the resize weight of this view.
void	insertUpdate(DocumentEvent ev, Shape shape, ViewFactory vf) This method is called when something is inserted into the Document that this View is displaying.
Shape	modelToView(int pos, Shape a, Position.Bias bias) Maps a position in the document into the coordinate space of the View.
void	paint(Graphics g, Shape s)
void	removeUpdate(DocumentEvent ev, Shape shape, ViewFactory vf) This method is called when something is removed from the Document that this View is displaying.
int	viewToModel(float fx, float fy, Shape a, Position.Bias[] bias) Maps coordinates from the View's space into a position in the document model.

Methods inherited from class javax.swing.text.PlainView

damageLineRange, drawLine, drawSelectedText, drawUnselectedText, getLineBuffer, getTabSize, lineToRect, nextTabStop, updateDamage, updateMetrics

Methods inherited from class javax.swing.text.View

append, breakView, createFragment, dump, forwardUpdate, forwardUpdateToView, getAlignment, getAttributes, getBreakWeight, getChildAllocation, getContainer, getDocument, getElement, getEndOffset, getGraphics, getMaximumSpan, getMinimumSpan, getNextVisualPositionFrom, getParent, getStartOffset, getToolTipText, getView, getViewCount, getViewFactory, getViewIndex, getViewIndex, insert, isVisible, modelToView, modelToView, preferenceChanged, remove, removeAll, replace, setParent, setSize, updateChildren, updateLayout, viewToModel

Methods inherited from class java.lang.Object

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

Constructor Detail

FieldView

public FieldView(Element elem)

Method Detail

getFontMetrics

protected FontMetrics getFontMetrics()

adjustAllocation

protected Shape adjustAllocation(Shape shape)

Vertically centers the single line of text within the bounds of the input shape. The returned Rectangle is centered vertically within shape and has a height of the preferred span along the Y axis. Horizontal adjustment is done according to the horizontalAligment property of the component that is rendered.

Parameters:

shape - the shape within which the line is beeing centered

getPreferredSpan

public float getPreferredSpan(int axis)

Description copied from class: View

Returns the preferred span along the specified axis. Normally the view is rendered with the span returned here if that is possible.

Overrides:

getPreferredSpan in class PlainView

Parameters:

axis - the axis

Returns:

the preferred span along the specified axis

getResizeWeight

public int getResizeWeight(int axis)

Description copied from class: View

Returns the resize weight of this view. A value of 0 or less means this view is not resizeable. Positive values make the view resizeable. The default implementation returns 0 unconditionally.

Overrides:

getResizeWeight in class View

Parameters:

axis - the axis

Returns:

the resizability of this view along the specified axis

modelToView

public Shape modelToView(int pos,
                Shape a,
                Position.Bias bias)
                  throws BadLocationException

Description copied from class: View

Maps a position in the document into the coordinate space of the View. The output rectangle usually reflects the font height but has a width of zero.

Overrides:

modelToView in class PlainView

Parameters:

pos - the position of the character in the model

a - the area that is occupied by the view

bias - either Position.Bias.Forward or Position.Bias.Backward depending on the preferred direction bias. If null this defaults to Position.Bias.Forward

Returns:

a rectangle that gives the location of the document position inside the view coordinate space

Throws:

BadLocationException - if pos is invalid

paint

public void paint(Graphics g,
         Shape s)

Overrides:

paint in class PlainView

insertUpdate

public void insertUpdate(DocumentEvent ev,
                Shape shape,
                ViewFactory vf)

Description copied from class: PlainView

This method is called when something is inserted into the Document that this View is displaying.

Overrides:

insertUpdate in class PlainView

Parameters:

ev - the DocumentEvent for the changes.

shape - the allocation of the View

vf - the ViewFactory used to rebuild

removeUpdate

public void removeUpdate(DocumentEvent ev,
                Shape shape,
                ViewFactory vf)

Description copied from class: PlainView

This method is called when something is removed from the Document that this View is displaying.

Overrides:

removeUpdate in class PlainView

Parameters:

ev - the DocumentEvent for the changes.

shape - the allocation of the View

vf - the ViewFactory used to rebuild

changedUpdate

public void changedUpdate(DocumentEvent ev,
                 Shape shape,
                 ViewFactory vf)

Description copied from class: PlainView

This method is called when attributes were changed in the Document in a location that this view is responsible for.

Overrides:

changedUpdate in class PlainView

Parameters:

ev - the DocumentEvent that describes the change

shape - the shape of the view

vf - the ViewFactory for creating child views

viewToModel

public int viewToModel(float fx,
              float fy,
              Shape a,
              Position.Bias[] bias)

Description copied from class: PlainView

Maps coordinates from the View's space into a position in the document model.

Overrides:

viewToModel in class PlainView

Parameters:

fx - the x coordinate in the view space

fy - the y coordinate in the view space

a - the allocation of this View

bias - the bias to use

Returns:

the position in the document that corresponds to the screen coordinates x, y