smacs.xngr.browser.editor
Class XmlView

java.lang.Object
  javax.swing.text.View
      javax.swing.text.PlainView
          smacs.xngr.browser.editor.XmlView

All Implemented Interfaces:

SwingConstants, TabExpander

public class XmlView

extends PlainView

The XML View uses the XML scanner to determine the style (font, color) of the text that it renders.

Note: The XML Editor package is based on the JavaEditorKit example as described in the article 'Customizing a Text Editor' by Timothy Prinzing. See: http://java.sun.com/products/jfc/tsc/articles/text/editor_kit/

Author:

Edwin Dankert

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

XmlView(XmlContext context, Element elem)
Construct a colorized view of xml text for the element.

Method Summary

protected int	drawSelectedText(Graphics g, int x, int y, int start, int end) Renders the given range in the model as selected text.
protected int	drawUnselectedText(Graphics g, int x, int y, int start, int end) Renders the given range in the model as normal unselected text.
void	paint(Graphics g, Shape a) Invalidates the scanner, to make sure a new range is set later.

Methods inherited from class javax.swing.text.PlainView

changedUpdate, damageLineRange, drawLine, getLineBuffer, getPreferredSpan, getTabSize, insertUpdate, lineToRect, modelToView, nextTabStop, removeUpdate, setSize, updateDamage, updateMetrics, viewToModel

Methods inherited from class javax.swing.text.View

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

Methods inherited from class java.lang.Object

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

Constructor Detail

XmlView

public XmlView(XmlContext context,
               Element elem)

Construct a colorized view of xml text for the element. Gets the current document and creates a new Scanner object.

Parameters:

context - the styles used to colorize the view.

elem - the element to create the view for.

Method Detail

paint

public void paint(Graphics g,
                  Shape a)

Invalidates the scanner, to make sure a new range is set later.

See Also:

PlainView.paint(Graphics,Shape)

drawUnselectedText

protected int drawUnselectedText(Graphics g,
                                 int x,
                                 int y,
                                 int start,
                                 int end)
                          throws BadLocationException

Renders the given range in the model as normal unselected text. This will paint the text according to the styles..

Parameters:

g - the graphics context

x - the starting X coordinate

y - the starting Y coordinate

start - the beginning position in the model

end - the ending position in the model

Returns:

the location of the end of the range

Throws:

BadLocationException - if the range is invalid

drawSelectedText

protected int drawSelectedText(Graphics g,
                               int x,
                               int y,
                               int start,
                               int end)
                        throws BadLocationException

Renders the given range in the model as selected text. This will paint the text according to the font as found in the styles..

Parameters:

g - the graphics context

x - the starting X coordinate

y - the starting Y coordinate

start - the beginning position in the model

end - the ending position in the model

Returns:

the location of the end of the range

Throws:

BadLocationException - if the range is invalid