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Class jclass.bwt.JCOutliner

java.lang.Object
   |
   +----java.awt.Component
           |
           +----java.awt.Container
                   |
                   +----java.awt.Panel
                           |
                           +----jclass.bwt.JCContainer
                                   |
                                   +----jclass.bwt.JCScrolledWindow
                                           |
                                           +----jclass.bwt.JCMultiColumnWindow
                                                   |
                                                   +----jclass.bwt.JCOutliner

public class JCOutliner

extends JCMultiColumnWindow

implements JCOutlinerInterface

The user can control whether the data contained in a folder is to be displayed. The user can collapse or uncollapse a folder by either double-clicking on the folder, hitting the space key, or clicking on the optional shortcut button displayed to the left of the folder. Typing a character will cause the first item which starts with the character to be made visible and selected. If no item can be found, no action is taken.

The shortcut button contains a character that indicates whether a folder is collapsed by displaying either a "+" (collapsed), or "-" (uncollapsed).

Properties

Name	Method
AllowMultipleSelections	setAllowMultipleSelections
AutoSelect	setAutoSelect
Background	setBackground
Batched	setBatched
ColumnAlignments	setColumnAlignments
ColumnButtons	setColumnButtons
ColumnLabels	setColumnLabels
ColumnLabelSort	setColumnLabelSort
ColumnLabelSortMethod	setColumnLabelSortMethod
ColumnLeftMargin	setColumnLeftMargin
ColumnRightMargin	setColumnRightMargin
ColumnWidths	setColumnWidths
Font	setFont
Foreground	setForeground
Insets	setInsets
NodeHeight	setNodeHeight
NodeIndent	setNodeIndent
NumColumns	setNumColumns
PreferredSize	setPreferredSize
RootVisible	setRootVisible
ScrollbarDisplay	setScrollbarDisplay
ScrollbarOffset	setScrollbarOffset
Spacing	setSpacing
StateList	setStateList
UserData	setUserData
VisibleRows	setVisibleRows

Events

Class	Listener	Description
JCActionEvent	addActionListener	Posted when an item is double-clicked, or the ENTER key is hit
JCOutlinerEvent	addItemListener	Posted when an item is clicked or the space key is hit

DRAGDROP_ALL

DRAGDROP_NONE

DRAGDROP_SOURCE

DRAGDROP_TARGET

FOLDER_CLOSED

FOLDER_OPEN_ALL

FOLDER_OPEN_FOLDERS

FOLDER_OPEN_ITEMS

FOLDER_OPEN_NONE

JCOutliner()

Creates an empty outliner.

JCOutliner(int, boolean)

Creates an outliner with the specified number of visible lines.

JCOutliner(JCOutlinerNode)

Creates an outliner with the specified root node.

JCOutliner(JCOutlinerNode, Applet, String)

Creates a outliner which reads parameters from the applet's HTML file.

addActionListener(JCActionListener)

Adds the specified action listener to receive action events.

addItemListener(JCItemListener)

Adds the specified item listener to receive item events.

calculateNodeHeight(JCOutlinerNode)

Calculates the height of a node (by looking at the node's style).

eventInShortcut(Event, JCOutlinerNode)

Returns true if the node is a folder and the event is within the folder's shortcut button.

eventToNode(Event)

Gets the node in which the event occurred.

folderChanged(JCOutlinerNode)

Notifies the outliner that the number of a folder's children has changed.

getAllowMultipleSelections()

Returns true if this outliner allows multiple selections.

getAutoSelect()

Gets the AutoSelect value.

getBatched()

Gets the Batched value.

getBounds(JCOutlinerNode, Rectangle)

Gets the physical bounding rectangle of a node (icon and label) (ie adjusted for scrolling and insets).

getDefaultNodeStyle()

Gets the default node style.

getDragAndDropPolicy()

Gets the DragAndDropPolicy value.

getFocusNode()

Returns the node which currently has focus, or null.

getNextNode(JCOutlinerNode)

Returns the next visible node, or null if none was found.

getNodeHeight()

Gets the NodeHeight value.

getNodeIndent()

Gets the NodeIndent value.

getNumNodes()

Gets the current number of non-collapsed nodes (ie the number of open folders and their children).

getOutliner()

Gets the internal outliner component.

getPreviousNode(JCOutlinerNode)

Returns the previous visible node, or null if none was found.

getRootNode()

Gets the root node.

getRootVisible()

Gets the RootVisible value.

getSelectedIndex()

Gets the row of the first selected node, or BWTEnum.NOTFOUND if no node is selected.

getSelectedIndexes()

Returns an array containing the rows of the selected nodes, or null if no nodes are selected.

getSelectedNode()

Returns the currently selected node, or null.

getSelectedObjects()

Returns the an array containing the labels of the selected nodes, or null if no node is selected.

getSpacing()

Gets the spacing between items.

getStateList()

Gets the current StateList.

getStyleList()

Gets the current StyleList.

getTree()

Gets the current node hierarchy as a String list.

getViewportHeight()

Sets the work area height to be the outliner's virtual height.

getVisibleNodes()

Gets a list of the nodes which are currently displayed.

getVisibleRows()

Returns the number of visible lines.

makeNodeVisible(JCOutlinerNode)

Scrolls the display if necessary to make the node visible.

removeActionListener(JCActionListener)

Removes the specified action listener so it no longer receives action events.

removeItemListener(JCItemListener)

Removes the specified item listener so it no longer receives item events.

scrollVertical(JCScrollableInterface, JCAdjustmentEvent, int)

Scrolls the list vertically.

selectNode(JCOutlinerNode, Event)

Selects a node, and posts a JCOutlinerEvent.

setAllowMultipleSelections(boolean)

Sets whether the outliner allows multiple selections.

setAutoSelect(boolean)

If true (default), the node which currently has focus is also selected.

HTML param name/value: "AutoSelect"/boolean

setBatched(boolean)

If false (default), the component is repainted every time an item is changed.

setDragAndDropPolicy(int)

Sets whether the outliner can be used as a drag and/or drop site.

setFocusNode(JCOutlinerNode, Event)

Sets a node to have the keyboard focus.

setHorizScrollbarValues()

This method may be overriden by a subclass to change the default values of the horizontal scrollbar.

setNodeHeight(int)

Sets the height of each node (pixels).

setNodeIndent(int)

Sets the indentation of each node relative to its parent (pixels).

HTML param name/value: "NodeIndent"/int

setNodeState(JCOutlinerNode, int, boolean)

Sets the state of a folder.

setOutliner(JCOutlinerComponent)

Replaces the current outliner.

setRootNode(JCOutlinerNode)

Sets the root node.

setRootVisible(boolean)

If true (default), the root node is drawn.

HTML param name/value: "RootVisible"/boolean

setSpacing(int)

Sets the spacing between items (default: 0).

setStateList(int[])

Sets a list of values used for double-clicking on a folder or clicking its shortcut button.

setStyleList(JCOutlinerNodeStyle[])

Sets the list of node styles.

setTree(String[])

Sets the node hierarchy by parsing the string list.

setVertScrollbarValues()

This method may be overriden by a subclass to change the default values of the vertical scrollbar.

setVisibleRows(int)

Sets the number of visible rows.

sortByColumn(int, JCSortInterface)

Sorts the nodes in the list in ascending order based on a specified column, using the String equivalents of each value.

sortByColumn(int, JCSortInterface, int)

Sorts the nodes in the list based on a specified column, using the String equivalents of each value.

 public static final int FOLDER_CLOSED

 public static final int FOLDER_OPEN_NONE

 public static final int FOLDER_OPEN_FOLDERS

 public static final int FOLDER_OPEN_ITEMS

 public static final int FOLDER_OPEN_ALL

 public static final int DRAGDROP_NONE

 public static final int DRAGDROP_TARGET

 public static final int DRAGDROP_SOURCE

 public static final int DRAGDROP_ALL

 public JCOutliner()

Creates an empty outliner. No parameters are read from an HTML file

 public JCOutliner(JCOutlinerNode root)

Creates an outliner with the specified root node. No parameters are read from an HTML file

See Also:

setRootNode

 public JCOutliner(int rows,
                   boolean multipleSelections)

Creates an outliner with the specified number of visible lines.

Parameters:

rows - the number of items to show. If set to 0, the outliner will attempt to show all its items.

multipleSelections - if true then multiple selections are allowed.

 public JCOutliner(JCOutlinerNode root,
                   Applet applet,
                   String name)

Creates a outliner which reads parameters from the applet's HTML file.

Parameters:

items - the initial items This may be a String, JCString or any object (in which case the object's toString() method is called to obtain a string).

applet - the applet whose PARAM tags are to be read

name - if this is not null, only parameters preceded by this name are read

See Also:

getParameter, JCString

 public JCOutlinerComponent getOutliner()

Gets the internal outliner component.

 public void setOutliner(JCOutlinerComponent outliner)

Replaces the current outliner.

 protected void setVertScrollbarValues()

This method may be overriden by a subclass to change the default values of the vertical scrollbar.

Overrides:

setVertScrollbarValues in class JCScrolledWindow

 protected void setHorizScrollbarValues()

This method may be overriden by a subclass to change the default values of the horizontal scrollbar.

Overrides:

setHorizScrollbarValues in class JCScrolledWindow

 protected int getViewportHeight()

Sets the work area height to be the outliner's virtual height.

Overrides:

getViewportHeight in class JCScrolledWindow

 protected void scrollVertical(JCScrollableInterface scrollable,
                               JCAdjustmentEvent ev,
                               int value)

Scrolls the list vertically.

Overrides:

scrollVertical in class JCScrolledWindow

 public void addItemListener(JCItemListener l)

Adds the specified item listener to receive item events. If the listener implements JCOutlinerListener (an JCItemListener subclass), it will be passed JCOutlinerEvents.

See Also:

JCItemEvent, JCOutlinerEvent, JCOutlinerListener

 public void removeItemListener(JCItemListener l)

Removes the specified item listener so it no longer receives item events.

 public void addActionListener(JCActionListener l)

Adds the specified action listener to receive action events. Action events occur when a node is double-clicked.

See Also:

JCActionEvent

 public void removeActionListener(JCActionListener l)

Removes the specified action listener so it no longer receives action events.

See Also:

addActionListener

 public void folderChanged(JCOutlinerNode node)

Notifies the outliner that the number of a folder's children has changed.

 public boolean getBatched()

Gets the Batched value.

See Also:

setBatched

 public void setBatched(boolean v)

If false (default), the component is repainted every time an item is changed. If set to true, the component is only repainted (if necessary) when the value is again set to false.

 public JCOutlinerNode getRootNode()

Gets the root node.

See Also:

setRootNode

 public void setRootNode(JCOutlinerNode node)

Sets the root node.

 public String[] getTree()

Gets the current node hierarchy as a String list.

See Also:

setTree

 public void setTree(String s[])

Sets the node hierarchy by parsing the string list. Each line in the list represents a node's label. Spaces or tabs at the start of each line supply the tree hierarchy. Lines with the same indentation level are children. Nodes without children are assumed to be items. To create a folder without children, append the string "(FOLDER)" to the line.

HTML param name/value: "Tree"/comma-separated lines

 public boolean getRootVisible()

Gets the RootVisible value.

See Also:

setRootVisible

 public void setRootVisible(boolean v)

If true (default), the root node is drawn.

HTML param name/value: "RootVisible"/boolean

 public int getNumNodes()

Gets the current number of non-collapsed nodes (ie the number of open folders and their children).

 public int calculateNodeHeight(JCOutlinerNode node)

Calculates the height of a node (by looking at the node's style).

 public int getNodeHeight()

Gets the NodeHeight value.

See Also:

setNodeHeight

 public void setNodeHeight(int v)

Sets the height of each node (pixels). If 0 (default), the height is determined using the largest font and image height in the list of node styles.

HTML param name/value: "NodeHeight"/int

 public boolean getAllowMultipleSelections()

Returns true if this outliner allows multiple selections.

See Also:

setAllowMultipleSelections

 public void setAllowMultipleSelections(boolean v)

Sets whether the outliner allows multiple selections. HTML param name/value: "AllowMultipleSelections"/boolean

See Also:

getAllowMultipleSelections

 public boolean getAutoSelect()

Gets the AutoSelect value.

See Also:

setAutoSelect

 public void setAutoSelect(boolean v)

If true (default), the node which currently has focus is also selected.

HTML param name/value: "AutoSelect"/boolean

See Also:

setFocusNode, selectNode

 public int getNodeIndent()

Gets the NodeIndent value.

See Also:

setNodeIndent

 public void setNodeIndent(int v)

Sets the indentation of each node relative to its parent (pixels).

HTML param name/value: "NodeIndent"/int

 public int[] getStateList()

Gets the current StateList.

See Also:

setStateList

 public void setStateList(int list[])

Sets a list of values used for double-clicking on a folder or clicking its shortcut button. The folder's state is cycled through the list. Valid values:

FOLDER_CLOSED        Folder closed; no children visible
FOLDER_OPEN_NONE     Folder open; no children visible
FOLDER_OPEN_FOLDERS  Folder open; only folder children visible
FOLDER_OPEN_ITEMS    Folder open; only non-folder children visible
FOLDER_OPEN_ALL      Folder open; all children visible
 

HTML param name/value: "StateList"/comma-separated list of enums

 public JCOutlinerNodeStyle[] getStyleList()

Gets the current StyleList.

See Also:

setStyleList

 public void setStyleList(JCOutlinerNodeStyle list[])

Sets the list of node styles. The list is only used for determining the node height if it has not been set.

See Also:

setNodeHeight

 public JCOutlinerNodeStyle getDefaultNodeStyle()

Gets the default node style.

 public int getSpacing()

Gets the spacing between items.

See Also:

setSpacing

 public void setSpacing(int v)

Sets the spacing between items (default: 0). This value increases the HighlightThickness value.

HTML param name/value: "Spacing"/int

See Also:

setHighlightThickness

 public int getVisibleRows()

Returns the number of visible lines.

See Also:

setVisibleRows

 public void setVisibleRows(int v)

Sets the number of visible rows. If set to 0 (default), the list will attempt to resize itself so that all its items are visible.

HTML param name/value: "VisibleRows"/int

 public int getSelectedIndex()

Gets the row of the first selected node, or BWTEnum.NOTFOUND if no node is selected.

See Also:

selectNode

 public int[] getSelectedIndexes()

Returns an array containing the rows of the selected nodes, or null if no nodes are selected.

 public Object[] getSelectedObjects()

Returns the an array containing the labels of the selected nodes, or null if no node is selected.

 public JCOutlinerNode getSelectedNode()

Returns the currently selected node, or null.

 public void selectNode(JCOutlinerNode node,
                        Event ev)

Selects a node, and posts a JCOutlinerEvent.

Parameters:

node - if null, the currently selected nodes are deselected

ev - event which caused the selection (passed to listener)

See Also:

addItemListener

 public JCOutlinerNode getFocusNode()

Returns the node which currently has focus, or null.

 public void setFocusNode(JCOutlinerNode node,
                          Event ev)

Sets a node to have the keyboard focus.

Parameters:

node - if null, no the current focus node is unchanged

ev - event which caused the focus change

 public JCVector getVisibleNodes()

Gets a list of the nodes which are currently displayed.

 public boolean setNodeState(JCOutlinerNode node,
                             int state,
                             boolean notify)

Sets the state of a folder.

Parameters:

node - if not a folder, no action is taken

state - one of:

 FOLDER_CLOSED        Folder closed; no children visible
 FOLDER_OPEN_NONE     Folder open; no children visible
 FOLDER_OPEN_FOLDERS  Folder open; only folder children visible
 FOLDER_OPEN_ITEMS    Folder open; only non-folder children visible
 FOLDER_OPEN_ALL      Folder open; all children visible
 

notify - if true, a JCOutlinerEvent and JCActionEvent is posted for the node

Returns:

false if the app disallowed the state change

Throws: IllegalArgumentException

If the value is invalid

See Also:

addActionListener, addItemListener

 public boolean makeNodeVisible(JCOutlinerNode node)

Scrolls the display if necessary to make the node visible.

Returns:

false if the node could not be made visible due to its parent's state

 public JCOutlinerNode getNextNode(JCOutlinerNode node)

Returns the next visible node, or null if none was found.

 public JCOutlinerNode getPreviousNode(JCOutlinerNode node)

Returns the previous visible node, or null if none was found.

 public Rectangle getBounds(JCOutlinerNode node,
                            Rectangle rect)

Gets the physical bounding rectangle of a node (icon and label) (ie adjusted for scrolling and insets).

Parameters:

rect - if not null, its members are set

Returns:

null if rect is null, otherwise the bounding rectangle

 public JCOutlinerNode eventToNode(Event ev)

Gets the node in which the event occurred.

 public boolean eventInShortcut(Event ev,
                                JCOutlinerNode node)

Returns true if the node is a folder and the event is within the folder's shortcut button.

 public void sortByColumn(int column,
                          JCSortInterface sort_if)

Sorts the nodes in the list in ascending order based on a specified column, using the String equivalents of each value.

Parameters:

sort_if - An optional interface whose compare method is called during sorting, to provide a mechanism for the application to specify whether one object is greater than another (similar to qsort's compare function). If this parameter is null, the column is sorted by numerical or string comparison as applicable.

Overrides:

sortByColumn in class JCMultiColumnWindow

 public void sortByColumn(int column,
                          JCSortInterface sort_if,
                          int direction)

Sorts the nodes in the list based on a specified column, using the String equivalents of each value.

Parameters:

sort_if - An optional interface whose compare method is called during sorting, to provide a mechanism for the application to specify whether one object is greater than another (similar to qsort's compare function). If this parameter is null, the column is sorted by numerical or string comparison as applicable.

direction - sort direction: ASCENDING or DESCENDING

Overrides:

sortByColumn in class JCMultiColumnWindow

 public int getDragAndDropPolicy()

Gets the DragAndDropPolicy value.

See Also:

setDragAndDropPolicy

 public void setDragAndDropPolicy(int v)

Sets whether the outliner can be used as a drag and/or drop site.

Parameters:

v - DRAGDROP_NONE (default), DRAGDROP_TARGET, DRAGDROP_SOURCE, DRAGDROP_ALL

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