oracle.javatools.editor
Class BasicEditorUI

java.lang.Object
  javax.swing.plaf.ComponentUI
      javax.swing.plaf.TextUI
          javax.swing.plaf.basic.BasicTextUI
              javax.swing.plaf.basic.BasicEditorPaneUI
                  oracle.javatools.editor.BasicEditorUI

All Implemented Interfaces:

javax.swing.text.ViewFactory

public class BasicEditorUI

extends javax.swing.plaf.basic.BasicEditorPaneUI

The BasicEditorUI overrides the default look and feel for the BasicEditorPane implementation in order to adhere to the locking policies in the document. The default BasicTextUI implementation makes the assumption that the document model used by the editor pane inherits from AbstractDocument, which is not true in our case. Because of this assumption, none of our locking calls are made when the editor is painted if the installed UI delegate is the Swing default one.

Nested Class Summary

Nested classes inherited from class javax.swing.plaf.basic.BasicTextUI

javax.swing.plaf.basic.BasicTextUI.BasicCaret, javax.swing.plaf.basic.BasicTextUI.BasicHighlighter

Constructor Summary

BasicEditorUI()

Method Summary

protected javax.swing.text.Caret	createCaret() Creates the object to use for a caret.
static javax.swing.plaf.ComponentUI	createUI(javax.swing.JComponent component) Creates a UI for the BasicEditorPane.
void	damageRange(javax.swing.text.JTextComponent component, int startOffset, int endOffset, javax.swing.text.Position.Bias startOffsetBias, javax.swing.text.Position.Bias endOffsetBias) Causes the portion of the view responsible for the given part of the model to be repainted.
java.awt.Dimension	getMaximumSize(javax.swing.JComponent component) Gets the maximum size for the editor component.
java.awt.Dimension	getMinimumSize(javax.swing.JComponent component) Gets the minimum size for the editor component.
int	getNextVisualPositionFrom(javax.swing.text.JTextComponent component, int offset, javax.swing.text.Position.Bias bias, int direction, javax.swing.text.Position.Bias[] biasRet) Provides a way to determine the next visually represented model location that one might place a caret.
java.awt.Dimension	getPreferredSize(javax.swing.JComponent component) Gets the preferred size for the editor component.
void	installUI(javax.swing.JComponent component) Installs the UI for a component.
java.awt.Rectangle	modelToView(javax.swing.text.JTextComponent component, int offset, javax.swing.text.Position.Bias bias) Converts the given location in the model to a place in the view coordinate system.
protected void	paintSafely(java.awt.Graphics graphics) Paints the interface safely with a guarantee that the model won't change from the view of this thread.
int	viewToModel(javax.swing.text.JTextComponent component, java.awt.Point point, javax.swing.text.Position.Bias[] biasReturn) Converts the given place in the view coordinate system to the nearest representative location in the model.

Methods inherited from class javax.swing.plaf.basic.BasicEditorPaneUI

getEditorKit, getPropertyPrefix, propertyChange

Methods inherited from class javax.swing.plaf.basic.BasicTextUI

create, create, createHighlighter, createKeymap, damageRange, getComponent, getKeymapName, getRootView, getToolTipText, getVisibleEditorRect, installDefaults, installKeyboardActions, installListeners, modelChanged, modelToView, paint, paintBackground, setView, uninstallDefaults, uninstallKeyboardActions, uninstallListeners, uninstallUI, update, viewToModel

Methods inherited from class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount

Methods inherited from class java.lang.Object

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

Constructor Detail

BasicEditorUI

public BasicEditorUI()

Method Detail

createUI

public static javax.swing.plaf.ComponentUI createUI(javax.swing.JComponent component)

Creates a UI for the BasicEditorPane.

Parameters:

component - the JTextPane component

Returns:

the UI

installUI

public void installUI(javax.swing.JComponent component)

Installs the UI for a component. We override this so that we can force the caret color black.

Parameters:

component - the editor component

See Also:

ComponentUI.installUI(javax.swing.JComponent)

createCaret

protected javax.swing.text.Caret createCaret()

Creates the object to use for a caret.

Returns:

the caret object

paintSafely

protected void paintSafely(java.awt.Graphics graphics)

Paints the interface safely with a guarantee that the model won't change from the view of this thread.

Parameters:

graphics - the graphics context

getPreferredSize

public java.awt.Dimension getPreferredSize(javax.swing.JComponent component)

Gets the preferred size for the editor component.

Parameters:

component - the editor component

Returns:

the preferred size of the editor component

getMinimumSize

public java.awt.Dimension getMinimumSize(javax.swing.JComponent component)

Gets the minimum size for the editor component.

Parameters:

component - the editor component

Returns:

the minimum size for this editor component

getMaximumSize

public java.awt.Dimension getMaximumSize(javax.swing.JComponent component)

Gets the maximum size for the editor component.

Parameters:

component - the editor component

Returns:

the maximum size for this editor component

modelToView

public java.awt.Rectangle modelToView(javax.swing.text.JTextComponent component,
                                      int offset,
                                      javax.swing.text.Position.Bias bias)
                               throws javax.swing.text.BadLocationException

Converts the given location in the model to a place in the view coordinate system.

Parameters:

component - the text component for which this UI is installed

offset - the local location in the model to translate >= 0

Returns:

the coordinates as a rectangle, null if the model is not painted

Throws:

javax.swing.text.BadLocationException - if the given offset does not represent a valid location in the document

See Also:

TextUI.modelToView(javax.swing.text.JTextComponent, int)

viewToModel

public int viewToModel(javax.swing.text.JTextComponent component,
                       java.awt.Point point,
                       javax.swing.text.Position.Bias[] biasReturn)

Converts the given place in the view coordinate system to the nearest representative location in the model.

Parameters:

component - the text component for which this UI is installed

point - the location in the view to translate. This should be in the same coordinate system as the mouse events.

Returns:

the offset from the start of the document >= 0, -1 if the component doesn't yet have a positive size.

See Also:

TextUI.viewToModel(javax.swing.text.JTextComponent, java.awt.Point)

getNextVisualPositionFrom

public int getNextVisualPositionFrom(javax.swing.text.JTextComponent component,
                                     int offset,
                                     javax.swing.text.Position.Bias bias,
                                     int direction,
                                     javax.swing.text.Position.Bias[] biasRet)
                              throws javax.swing.text.BadLocationException

Provides a way to determine the next visually represented model location that one might place a caret.

Parameters:

component - the text component for which this UI is installed

offset - the position to convert >= 0

direction - the direction from the current position that can be thought of as the arrow keys typically found on a keyboard. This may be SwingConstants.WEST, SwingConstants.EAST, SwingConstants.NORTH, or SwingConstants.SOUTH.

Returns:

the location within the model that best represents the next location visual position.

Throws:

javax.swing.text.BadLocationException - if the given offset does not represent a valid location in the document

java.lang.IllegalArgumentException - for an invalid direction

damageRange

public void damageRange(javax.swing.text.JTextComponent component,
                        int startOffset,
                        int endOffset,
                        javax.swing.text.Position.Bias startOffsetBias,
                        javax.swing.text.Position.Bias endOffsetBias)

Causes the portion of the view responsible for the given part of the model to be repainted.

Parameters:

component - the text component for which this UI is installed

startOffset - the beginning of the range >= 0

endOffset - the end of the range >= startOffset