Class DiffControllerImpl

java.lang.Object

org.netbeans.spi.diff.DiffControllerImpl

public abstract class DiffControllerImpl
extends Object

Provider class for DiffController, encapsulates a single Diff panel that displays differences between two files (sources).

Since:

1.18

Field Summary

Fields

Modifier and Type	Field	Description
protected final PropertyChangeSupport	support	A PropertyChangeSupport instance.

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	DiffControllerImpl()	Default constructor, does nothing.

Method Summary

Modifier and Type	Method	Description
final void	addPropertyChangeListener(PropertyChangeListener listener)	Adds a property change listener.
abstract int	getDifferenceCount()	Gets total number of Differences between sources currently displayed in the Diff view.
final int	getDifferenceIndex()	Gets the current (highlighted) difference in the Diff view.
abstract JComponent	getJComponent()	Retrieves visual presenter of the Diff.
final void	removePropertyChangeListener(PropertyChangeListener listener)	Removes a property change listener.
protected final void	setDifferenceIndex(int idx)	Implementors use this method to set the current (highlighted) difference.
void	setLocation(DiffController.DiffPane pane, DiffController.LocationType type, int location)	Ensure the requested location in the Diff view is visible on screen.

Methods inherited from class java.lang.Object

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

Field Details

support

protected final PropertyChangeSupport support

A PropertyChangeSupport instance.

Constructor Details

DiffControllerImpl

protected DiffControllerImpl()

Default constructor, does nothing.

Method Details

setLocation

public void setLocation(DiffController.DiffPane pane,
 DiffController.LocationType type,
 int location)

Ensure the requested location in the Diff view is visible on screen. Diff view can be requested to jump to a given line in either source or to a given Difference. Diff controller may ignore the request if it does not support this functionality. This method must be called from AWT thread.

Parameters:

pane - defines which pane the location parameter refers to

type - defines the location parameter, see below

location - depending on the type parameter this defines either a line number or a Difference index, both 0-based

Throws:

IllegalArgumentException - if location parameter is out of range for the given pane and location type

getJComponent

public abstract JComponent getJComponent()

Retrieves visual presenter of the Diff.

Returns:

JComponent component to be embedded into client UI

getDifferenceCount

public abstract int getDifferenceCount()

Gets total number of Differences between sources currently displayed in the Diff view.

Returns:

total number of Differences in sources, an integer >= 0

getDifferenceIndex

public final int getDifferenceIndex()

Gets the current (highlighted) difference in the Diff view.

Returns:

current difference index or -1 of there is no Current difference

setDifferenceIndex

protected final void setDifferenceIndex(int idx)

Implementors use this method to set the current (highlighted) difference.

Parameters:

idx - a new current difference indox

addPropertyChangeListener

public final void addPropertyChangeListener(PropertyChangeListener listener)

Adds a property change listener.

Parameters:

listener - property change listener

removePropertyChangeListener

public final void removePropertyChangeListener(PropertyChangeListener listener)

Removes a property change listener.

Parameters:

listener - property change listener