All Packages  Class Hierarchy  This Package  Previous  Next  Index

Class ncsa.awt.hlist.ListCanvas 

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Canvas
                   |
                   +----ncsa.awt.hlist.ListCanvas
public class ListCanvas
extends Canvas
implements ItemSelectable, AdjustmentListener
This class produces an object which displays heirarchical data

Variable Index

o itemListener

Constructor Index

o ListCanvas(Panel, String, int, int)
Constructor for ListCanvas; used to display the graphical representation of ListContainers and ListElements

Method Index

o addItemListener(ItemListener)
o adjustmentValueChanged(AdjustmentEvent)
o adjustSize()
readjust the size of the canvas and panel that holds it.
o createInitialFolder()
Create the initial folder for this ListCanvas.
o deleteSelection()
o elements()
o getClosedContainerImage()
Get the Image representing the closed container
o getListElementImage()
Get the Image representing this bookmark
o getMainContainer()
Get the main container for this ListCanvas
o getOpenContainerImage()
Get the Image representing the open container
o getSelectedObjects()
Get the currently selected HotListItem
o getTitle()
Get the name of this ListCanvas
o hilite(ListItem)
o lineAfter(ListItem)
o lineBefore(ListItem)
o paint(Graphics)
Paint this ListCanvas
o paintFirstTime()
o processMouseEvent(MouseEvent)
Handle a mouseDown event within the ListCanvas
o processMouseMotionEvent(MouseEvent)
Handle a mouseDrag event within the ListCanvas
o removeItemListener(ItemListener)
o setCurrentItem(ListItem)
o setListContainerImages(Image, Image)
Set the Image representing the open and closed states of a Container.
o setListElementImage(Image)
Set the image representing this bookmark
o setMainContainer(ListContainer)
Get the main container for this ListCanvas
o unEverything()

Variables

o itemListener 
 public ItemListener itemListener

Constructors

o ListCanvas 
 public ListCanvas(Panel panel,
                   String title,
                   int width,
                   int height)
Constructor for ListCanvas; used to display the graphical representation of ListContainers and ListElements

Parameters:
panel - the panel holding this canvas
title - title of the ListCanvas
width - Width of the canvas
height - Height of the canvas

Methods

o paintFirstTime 
 public void paintFirstTime()
o adjustmentValueChanged 
 public void adjustmentValueChanged(AdjustmentEvent e)
o addItemListener 
 public void addItemListener(ItemListener listener)
o removeItemListener 
 public void removeItemListener(ItemListener listener)
o setListElementImage 
 public void setListElementImage(Image element)
Set the image representing this bookmark

o getListElementImage 
 public Image getListElementImage()
Get the Image representing this bookmark

o setListContainerImages 
 public void setListContainerImages(Image open_img,
                                    Image closed_img)
Set the Image representing the open and closed states of a Container.

o getOpenContainerImage 
 public Image getOpenContainerImage()
Get the Image representing the open container

o getClosedContainerImage 
 public Image getClosedContainerImage()
Get the Image representing the closed container

o createInitialFolder 
 public void createInitialFolder()
Create the initial folder for this ListCanvas. Currently there is only one main folder per ListCanvas; this can be changed to handle multiple main folders in the future.

o processMouseEvent 
 public void processMouseEvent(MouseEvent e)
Handle a mouseDown event within the ListCanvas

Parameters:
event - the event that occurred
x - x coordinate
y - y coordinate
Overrides:
processMouseEvent in class Component
o adjustSize 
 public void adjustSize()
readjust the size of the canvas and panel that holds it.

o processMouseMotionEvent 
 public void processMouseMotionEvent(MouseEvent e)
Handle a mouseDrag event within the ListCanvas

Parameters:
event - the event that occurred
x - x coordinate
y - y coordinate
Overrides:
processMouseMotionEvent in class Component
o getSelectedObjects 
 public Object[] getSelectedObjects()
Get the currently selected HotListItem

o setMainContainer 
 public void setMainContainer(ListContainer folder)
Get the main container for this ListCanvas

o getMainContainer 
 public ListContainer getMainContainer()
Get the main container for this ListCanvas

o getTitle 
 public String getTitle()
Get the name of this ListCanvas

o setCurrentItem 
 public void setCurrentItem(ListItem item)
o paint 
 public void paint(Graphics g)
Paint this ListCanvas

Overrides:
paint in class Canvas
o hilite 
 public void hilite(ListItem item)
o lineAfter 
 public void lineAfter(ListItem item)
o lineBefore 
 public void lineBefore(ListItem item)
o unEverything 
 public void unEverything()
o elements 
 public Enumeration elements()
o deleteSelection 
 public void deleteSelection()

All Packages  Class Hierarchy  This Package  Previous  Next  Index