Class DiffController

java.lang.Object

org.netbeans.api.diff.DiffController

public final class DiffController
extends Object

Encapsulates a single Diff window that displays differences between two files (sources).

Since:

1.18

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	DiffController.DiffPane	Enumerates Base (left) and Modified (right) panes of a Diff view for setLocation() method
static enum	DiffController.LocationType	Enumerates types of location for setLocation() method.

Field Summary

Fields

Modifier and Type	Field	Description
static final String	PROP_DIFFERENCES	Property change that indicates that set of differences OR the current difference changed.

Method Summary

Modifier and Type	Method	Description
void	addPropertyChangeListener(PropertyChangeListener listener)	Adds a property change listener.
static DiffController	create(StreamSource base, StreamSource modified)	Creates a Diff Controller for supplied left and right sources.
static DiffController	createEnhanced(StreamSource base, StreamSource modified)	Creates a Diff Controller for supplied left and right sources capable of creating enhanced UI.
int	getDifferenceCount()	Gets total number of Differences between sources currently displayed in the Diff view.
int	getDifferenceIndex()	Gets the current (highlighted) difference in the Diff view.
JComponent	getJComponent()	Intializes the Controller and creates visual presenter of the Diff.
void	removePropertyChangeListener(PropertyChangeListener listener)	Removes a property change listener.
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

PROP_DIFFERENCES

public static final String PROP_DIFFERENCES

Property change that indicates that set of differences OR the current difference changed. Current difference changes as the user navigates in the view and set of differences may change if the view is editable or a source changes programatically. Clients should update their state that depends on the current difference index or total number of differences.

See Also:

• Constant Field Values

Method Details

create

public static DiffController create(StreamSource base,
 StreamSource modified)
                             throws IOException

Creates a Diff Controller for supplied left and right sources.

Parameters:

base - defines content of the Base Diff pane

modified - defines content of the Modified (possibly editable) Diff pane

Returns:

DiffController implementation of the DiffController class

Throws:

IOException - when the reading from input streams fails.

createEnhanced

public static DiffController createEnhanced(StreamSource base,
 StreamSource modified)
                                     throws IOException

Creates a Diff Controller for supplied left and right sources capable of creating enhanced UI.

Parameters:

base - defines content of the Base Diff pane

modified - defines content of the Modified (possibly editable) Diff pane

Returns:

DiffController implementation of the DiffController class

Throws:

IOException - when the reading from input streams fails.

Since:

1.27

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 JComponent getJComponent()

Intializes the Controller and creates visual presenter of the Diff.

Returns:

JComponent component to be embedded into client UI

getDifferenceCount

public 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 int getDifferenceIndex()

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

Returns:

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

addPropertyChangeListener

public void addPropertyChangeListener(PropertyChangeListener listener)

Adds a property change listener.

Parameters:

listener - property change listener

removePropertyChangeListener

public void removePropertyChangeListener(PropertyChangeListener listener)

Removes a property change listener.

Parameters:

listener - property change listener