org.fife.ui.rtextarea
Class IconRowHeader

java.lang.Object
  java.awt.Component
      java.awt.Container
          javax.swing.JComponent
              javax.swing.JPanel
                  org.fife.ui.rtextarea.IconRowHeader

All Implemented Interfaces:

MouseListener, ImageObserver, MenuContainer, Serializable, EventListener, Accessible

Direct Known Subclasses:

FoldingAwareIconRowHeader

public class IconRowHeader
extends JPanel
implements MouseListener

Renders icons in the Gutter. This can be used to visually mark lines containing syntax errors, lines with breakpoints set on them, etc.

This component has built-in support for displaying icons representing "bookmarks;" that is, lines a user can cycle through via F2 and Shift+F2. Bookmarked lines are toggled via Ctrl+F2, or by clicking in the icon area at the line to bookmark. In order to enable bookmarking, you must first assign an icon to represent a bookmarked line, then actually enable the feature. This is actually done on the parent Gutter component:

 Gutter gutter = scrollPane.getGutter();
 gutter.setBookmarkIcon(new ImageIcon("bookmark.png"));
 gutter.setBookmarkingEnabled(true);
 

Version:

1.0

Author:

Robert Futrell

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.JPanel

JPanel.AccessibleJPanel

Nested classes/interfaces inherited from class javax.swing.JComponent

JComponent.AccessibleJComponent

Nested classes/interfaces inherited from class java.awt.Container

Container.AccessibleAWTContainer

Nested classes/interfaces inherited from class java.awt.Component

Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy

Field Summary

protected int	activeLineRangeEnd The end line in the active line range.
protected int	activeLineRangeStart The first line in the active line range.
protected int	currentLineCount The number of lines in the text area.
protected RTextArea	textArea The text area whose lines we are marking with icons.
protected Insets	textAreaInsets Used in paintComponent(Graphics) to prevent reallocation on each paint.
protected List	trackingIcons The icons to render.
protected Rectangle	visibleRect Used in paintComponent(Graphics) to prevent reallocation on each paint.
protected int	width The width of this component.

Fields inherited from class javax.swing.JComponent

accessibleContext, listenerList, TOOL_TIP_TEXT_KEY, ui, UNDEFINED_CONDITION, WHEN_ANCESTOR_OF_FOCUSED_COMPONENT, WHEN_FOCUSED, WHEN_IN_FOCUSED_WINDOW

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Fields inherited from interface java.awt.image.ImageObserver

ABORT, ALLBITS, ERROR, FRAMEBITS, HEIGHT, PROPERTIES, SOMEBITS, WIDTH

Constructor Summary

IconRowHeader(RTextArea textArea)
Constructor.

Method Summary

GutterIconInfo	addOffsetTrackingIcon(int offs, Icon icon) Adds an icon that tracks an offset in the document, and is displayed adjacent to the line numbers.
void	clearActiveLineRange() Clears the active line range.
Color	getActiveLineRangeColor() Returns the color used to paint the active line range, if any.
Icon	getBookmarkIcon() Returns the icon to use for bookmarks.
GutterIconInfo[]	getBookmarks() Returns the bookmarks known to this gutter.
protected static Rectangle	getChildViewBounds(View parent, int line, Rectangle editorRect) Returns the bounds of a child view as a rectangle, since Views tend to use Shape.
protected Gutter	getGutter() Returns the parent Gutter component.
Dimension	getPreferredSize()
protected org.fife.ui.rtextarea.IconRowHeader.GutterIconImpl	getTrackingIcon(int index)
GutterIconInfo[]	getTrackingIcons(int line) Returns the tracking icons at the specified line.
boolean	isBookmarkingEnabled() Returns whether bookmarking is enabled.
void	mouseClicked(MouseEvent e)
void	mouseEntered(MouseEvent e)
void	mouseExited(MouseEvent e)
void	mousePressed(MouseEvent e)
void	mouseReleased(MouseEvent e)
protected void	paintComponent(Graphics g)
void	removeAllTrackingIcons() Removes all tracking icons.
void	removeTrackingIcon(Object tag) Removes the specified tracking icon.
void	setActiveLineRange(int startLine, int endLine) Highlights a range of lines in the icon area.
void	setActiveLineRangeColor(Color color) Sets the color to use to render active line ranges.
void	setBookmarkIcon(Icon icon) Sets the icon to use for bookmarks.
void	setBookmarkingEnabled(boolean enabled) Sets whether bookmarking is enabled.
void	setTextArea(RTextArea textArea) Sets the text area being displayed.
boolean	toggleBookmark(int line) Programatically toggles whether there is a bookmark for the specified line.
void	updateUI()

Methods inherited from class javax.swing.JPanel

getAccessibleContext, getUI, getUIClassID, paramString, setUI

Methods inherited from class javax.swing.JComponent

addAncestorListener, addNotify, addVetoableChangeListener, computeVisibleRect, contains, createToolTip, disable, enable, firePropertyChange, firePropertyChange, firePropertyChange, fireVetoableChange, getActionForKeyStroke, getActionMap, getAlignmentX, getAlignmentY, getAncestorListeners, getAutoscrolls, getBaseline, getBaselineResizeBehavior, getBorder, getBounds, getClientProperty, getComponentGraphics, getComponentPopupMenu, getConditionForKeyStroke, getDebugGraphicsOptions, getDefaultLocale, getFontMetrics, getGraphics, getHeight, getInheritsPopupMenu, getInputMap, getInputMap, getInputVerifier, getInsets, getInsets, getListeners, getLocation, getMaximumSize, getMinimumSize, getNextFocusableComponent, getPopupLocation, getRegisteredKeyStrokes, getRootPane, getSize, getToolTipLocation, getToolTipText, getToolTipText, getTopLevelAncestor, getTransferHandler, getVerifyInputWhenFocusTarget, getVetoableChangeListeners, getVisibleRect, getWidth, getX, getY, grabFocus, isDoubleBuffered, isLightweightComponent, isManagingFocus, isOpaque, isOptimizedDrawingEnabled, isPaintingForPrint, isPaintingTile, isRequestFocusEnabled, isValidateRoot, paint, paintBorder, paintChildren, paintImmediately, paintImmediately, print, printAll, printBorder, printChildren, printComponent, processComponentKeyEvent, processKeyBinding, processKeyEvent, processMouseEvent, processMouseMotionEvent, putClientProperty, registerKeyboardAction, registerKeyboardAction, removeAncestorListener, removeNotify, removeVetoableChangeListener, repaint, repaint, requestDefaultFocus, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resetKeyboardActions, reshape, revalidate, scrollRectToVisible, setActionMap, setAlignmentX, setAlignmentY, setAutoscrolls, setBackground, setBorder, setComponentPopupMenu, setDebugGraphicsOptions, setDefaultLocale, setDoubleBuffered, setEnabled, setFocusTraversalKeys, setFont, setForeground, setInheritsPopupMenu, setInputMap, setInputVerifier, setMaximumSize, setMinimumSize, setNextFocusableComponent, setOpaque, setPreferredSize, setRequestFocusEnabled, setToolTipText, setTransferHandler, setUI, setVerifyInputWhenFocusTarget, setVisible, unregisterKeyboardAction, update

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, addPropertyChangeListener, addPropertyChangeListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalKeys, getFocusTraversalPolicy, getLayout, getMousePosition, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paintComponents, preferredSize, printComponents, processContainerEvent, processEvent, remove, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusCycleRoot, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setLayout, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, createImage, createImage, createVolatileImage, createVolatileImage, disableEvents, dispatchEvent, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusCycleRootAncestor, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getForeground, getGraphicsConfiguration, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputContext, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocale, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getToolkit, getTreeLock, gotFocus, handleEvent, hasFocus, hide, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isPreferredSizeSet, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processMouseWheelEvent, remove, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, resize, resize, setBounds, setBounds, setComponentOrientation, setCursor, setDropTarget, setFocusable, setFocusTraversalKeysEnabled, setIgnoreRepaint, setLocale, setLocation, setLocation, setName, setSize, setSize, show, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

trackingIcons

protected List trackingIcons

The icons to render.

width

protected int width

The width of this component.

visibleRect

protected Rectangle visibleRect

Used in paintComponent(Graphics) to prevent reallocation on each paint.

textAreaInsets

protected Insets textAreaInsets

Used in paintComponent(Graphics) to prevent reallocation on each paint.

activeLineRangeStart

protected int activeLineRangeStart

The first line in the active line range.

activeLineRangeEnd

protected int activeLineRangeEnd

The end line in the active line range.

textArea

protected RTextArea textArea

The text area whose lines we are marking with icons.

currentLineCount

protected int currentLineCount

The number of lines in the text area.

Constructor Detail

IconRowHeader

public IconRowHeader(RTextArea textArea)

Constructor.

Parameters:

textArea - The parent text area.

Method Detail

addOffsetTrackingIcon

public GutterIconInfo addOffsetTrackingIcon(int offs,
                                            Icon icon)
                                     throws BadLocationException

Adds an icon that tracks an offset in the document, and is displayed adjacent to the line numbers. This is useful for marking things such as source code errors.

Parameters:

offs - The offset to track.

icon - The icon to display. This should be small (say 16x16).

Returns:

A tag for this icon.

Throws:

BadLocationException - If offs is an invalid offset into the text area.

See Also:

removeTrackingIcon(Object)

clearActiveLineRange

public void clearActiveLineRange()

Clears the active line range.

See Also:

setActiveLineRange(int, int)

getActiveLineRangeColor

public Color getActiveLineRangeColor()

Returns the color used to paint the active line range, if any.

Returns:

The color.

See Also:

setActiveLineRangeColor(Color)

getBookmarkIcon

public Icon getBookmarkIcon()

Returns the icon to use for bookmarks.

Returns:

The icon to use for bookmarks. If this is null, bookmarking is effectively disabled.

See Also:

setBookmarkIcon(Icon), isBookmarkingEnabled()

getBookmarks

public GutterIconInfo[] getBookmarks()

Returns the bookmarks known to this gutter.

Returns:

The bookmarks. If there are no bookmarks, an empty array is returned.

getPreferredSize

public Dimension getPreferredSize()

Overrides:

getPreferredSize in class JComponent

getTrackingIcon

protected org.fife.ui.rtextarea.IconRowHeader.GutterIconImpl getTrackingIcon(int index)

getTrackingIcons

public GutterIconInfo[] getTrackingIcons(int line)
                                  throws BadLocationException

Returns the tracking icons at the specified line.

Parameters:

line - The line.

Returns:

The tracking icons at that line. If there are no tracking icons there, this will be an empty array.

Throws:

BadLocationException - If line is invalid.

isBookmarkingEnabled

public boolean isBookmarkingEnabled()

Returns whether bookmarking is enabled.

Returns:

Whether bookmarking is enabled.

See Also:

setBookmarkingEnabled(boolean)

mouseClicked

public void mouseClicked(MouseEvent e)

Specified by:

mouseClicked in interface MouseListener

mouseEntered

public void mouseEntered(MouseEvent e)

Specified by:

mouseEntered in interface MouseListener

mouseExited

public void mouseExited(MouseEvent e)

Specified by:

mouseExited in interface MouseListener

mousePressed

public void mousePressed(MouseEvent e)

Specified by:

mousePressed in interface MouseListener

mouseReleased

public void mouseReleased(MouseEvent e)

Specified by:

mouseReleased in interface MouseListener

paintComponent

protected void paintComponent(Graphics g)

Overrides:

paintComponent in class JComponent

removeTrackingIcon

public void removeTrackingIcon(Object tag)

Removes the specified tracking icon.

Parameters:

tag - A tag for a tracking icon.

See Also:

removeAllTrackingIcons(), addOffsetTrackingIcon(int, Icon)

removeAllTrackingIcons

public void removeAllTrackingIcons()

Removes all tracking icons.

See Also:

removeTrackingIcon(Object), addOffsetTrackingIcon(int, Icon)

setActiveLineRange

public void setActiveLineRange(int startLine,
                               int endLine)

Highlights a range of lines in the icon area.

Parameters:

startLine - The start of the line range.

endLine - The end of the line range.

See Also:

clearActiveLineRange()

setActiveLineRangeColor

public void setActiveLineRangeColor(Color color)

Sets the color to use to render active line ranges.

Parameters:

color - The color to use. If this is null, then the default color is used.

See Also:

getActiveLineRangeColor(), Gutter.DEFAULT_ACTIVE_LINE_RANGE_COLOR

setBookmarkIcon

public void setBookmarkIcon(Icon icon)

Sets the icon to use for bookmarks. Any previous bookmark icons are removed.

Parameters:

icon - The new bookmark icon. If this is null, bookmarking is effectively disabled.

See Also:

getBookmarkIcon(), isBookmarkingEnabled()

setBookmarkingEnabled

public void setBookmarkingEnabled(boolean enabled)

Sets whether bookmarking is enabled. Note that a bookmarking icon must be set via setBookmarkIcon(Icon) before bookmarks are truly enabled.

Parameters:

enabled - Whether bookmarking is enabled. If this is false, any bookmark icons are removed.

See Also:

isBookmarkingEnabled(), setBookmarkIcon(Icon)

setTextArea

public void setTextArea(RTextArea textArea)

Sets the text area being displayed. This will clear any tracking icons currently displayed.

Parameters:

textArea - The text area.

toggleBookmark

public boolean toggleBookmark(int line)
                       throws BadLocationException

Programatically toggles whether there is a bookmark for the specified line. If bookmarking is not enabled, this method does nothing.

Parameters:

line - The line.

Returns:

Whether a bookmark is now at the specified line.

Throws:

BadLocationException - If line is an invalid line number in the text area.

updateUI

public void updateUI()

Overrides:

updateUI in class JPanel

getChildViewBounds

protected static final Rectangle getChildViewBounds(View parent,
                                                    int line,
                                                    Rectangle editorRect)

Returns the bounds of a child view as a rectangle, since Views tend to use Shape.

Parameters:

parent - The parent view of the child whose bounds we're getting.

line - The index of the child view.

editorRect - Returned from the text area's getVisibleEditorRect method.

Returns:

The child view's bounds.

getGutter

protected Gutter getGutter()

Returns the parent Gutter component.

Returns:

The parent Gutter.