net.atlanticbb.tantlinger.ui.text
Class CachedImageView

java.lang.Object
  javax.swing.text.View
      javax.swing.text.html.ImageView
          net.atlanticbb.tantlinger.ui.text.CachedImageView

All Implemented Interfaces:

javax.swing.SwingConstants

public class CachedImageView
extends javax.swing.text.html.ImageView

An ImageView which caches images to a local directory after they're initially loaded. After the images are cached, they're subsequently loaded from the local directory, thereby reducing the overhead of refetching them from their remote location.

Author:

Bob Tantlinger

Field Summary

static java.lang.String	IMG_CACHE_DIR
static java.lang.String	PROP_DIR Directory where app properties are stored
static java.lang.String	USER_HOME

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

CachedImageView(javax.swing.text.Element elem)

Method Summary

java.net.URL	getImageURL() Return a URL for the image source, or null if it could not be determined.
void	paint(java.awt.Graphics g, java.awt.Shape a)

Methods inherited from class javax.swing.text.html.ImageView

changedUpdate, getAlignment, getAltText, getAttributes, getImage, getLoadingImageIcon, getLoadsSynchronously, getNoImageIcon, getPreferredSpan, getStyleSheet, getToolTipText, modelToView, setLoadsSynchronously, setParent, setPropertiesFromAttributes, setSize, viewToModel

Methods inherited from class javax.swing.text.View

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

Methods inherited from class java.lang.Object

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

Field Detail

USER_HOME

public static final java.lang.String USER_HOME

PROP_DIR

public static final java.lang.String PROP_DIR

Directory where app properties are stored

IMG_CACHE_DIR

public static final java.lang.String IMG_CACHE_DIR

Constructor Detail

CachedImageView

public CachedImageView(javax.swing.text.Element elem)

Method Detail

paint

public void paint(java.awt.Graphics g,
                  java.awt.Shape a)

Overrides:

paint in class javax.swing.text.html.ImageView

getImageURL

public java.net.URL getImageURL()

Return a URL for the image source, or null if it could not be determined. If the image is cached, the local file URL is returned. The superclass treats this the same as the actual url, but the image is loaded from the local cache rather than redownloading it

Overrides:

getImageURL in class javax.swing.text.html.ImageView