bibliothek.gui.dock.control.relocator
Class DefaultDockRelocator

java.lang.Object
  bibliothek.gui.dock.control.relocator.AbstractDockRelocator
      bibliothek.gui.dock.control.relocator.DefaultDockRelocator

All Implemented Interfaces:

DockRelocator

public class DefaultDockRelocator
extends AbstractDockRelocator

Default implementation of a handler that performs the drag & drop operations for a DockController.

Author:

Benjamin Sigg

Field Summary

static String	EXTENSION_PARAM Name of a parameter of an ExtensionName pointing to this
static Path	INSERTER_EXTENSION Path of an ExtensionName that adds new Inserters
static Path	MERGE_EXTENSION Path of an ExtensionName that adds new Mergers

Constructor Summary

DefaultDockRelocator(DockController controller, ControllerSetupCollection setup)
Creates a new manager.

Method Summary

void	cancel() Cancels the current drag and drop operation (if there is any).
protected boolean	canMerge(StationDropOperation operation, DockStation parent, Dockable selection) Checks whether the current Merger can merge parent with child.
DirectRemoteRelocator	createDirectRemote(Dockable dockable) Creates a device with which drag&drop operations concerning dockable can be initiated and executed.
DirectRemoteRelocator	createDirectRemote(Dockable dockable, boolean forceDrag) Creates a device with which drag&drop operations concerning dockable can be initiated and executed.
RemoteRelocator	createRemote(Dockable dockable) Creates a device with which drag&drop operations concerning dockable can be initiated and executed.
RemoteRelocator	createRemote(Dockable dockable, boolean forceDrag) Creates a device with which drag&drop operations concerning dockable can be initiated and executed.
protected RemoteRelocator.Reaction	dragMouseDragged(int x, int y, int modifiers, DockTitle title, Dockable dockable, boolean always, boolean forceDrag) Handles a mouse-pressed event.
protected RemoteRelocator.Reaction	dragMouseDragged(int x, int y, int modifiers, DockTitle title, Dockable dockable, boolean always, boolean forceDrag, boolean showMovingImage) Handles a mouse-pressed event.
protected void	dragMouseDragged(MouseEvent e, DockTitle title, Dockable dockable) Invoked while the user drags a title or Dockable.
protected RemoteRelocator.Reaction	dragMousePressed(int x, int y, int dx, int dy, int modifiers, Dockable dockable, boolean forceDrag) Handles a mouse-pressed event.
protected void	dragMousePressed(MouseEvent e, DockTitle title, Dockable dockable) Invoked by the listeners of a title to start a drag and drop operation.
protected RemoteRelocator.Reaction	dragMouseReleased(int x, int y, int modifiers, Dockable dockable) Handles a mouse-released event.
protected void	dragMouseReleased(MouseEvent e, DockTitle title, Dockable dockable) Invoked while the user drags a title or Dockable and releases a mouse button.
protected boolean	executeOperation(Dockable dockable, RelocateOperation operation) Executes the drag and drop event operation.
boolean	hasTarget() Tells whether the current drag and drop operation has a target, i.e.
protected boolean	isCancelLocation(int x, int y, Dockable moved) Checks whether the mouse is at a location that cancels a drag and drop operation.
protected boolean	isCancelLocation(int x, int y, DockElementRepresentative item) Checks whether the mouse is at a location that cancels a drag and drop operation.
boolean	isOnMove() Tells whether the user has currently grabbed a dockable and moves the dockable around.
boolean	isOnPut() Tells whether this relocator currently puts a Dockable.
protected boolean	isStationValid(DockStation station) Only stations passing this test are considered during drag and drop operation as new parent.
protected List<DockStation>	listStationsOrdered(int x, int y, Dockable moved) Makes a list of all stations which are visible and contain the point x/y.
protected RelocateOperation	preparePut(int mouseX, int mouseY, int titleX, int titleY, Dockable dockable) Searches a station which can become the parent of dockable if the mouse is released at mouseX/mouseY.

Methods inherited from class bibliothek.gui.dock.control.relocator.AbstractDockRelocator

addMode, addVetoableDockRelocatorListener, checkModes, disableAllModes, fireCanceled, fireDragged, fireDragging, fireDropped, fireDropping, fireGrabbed, fireGrabbing, fireSearched, getController, getDragDistance, getInserter, getMerger, isDragOnlyTitel, removeMode, removeVetoableDockRelocatorListener, setDragDistance, setDragOnlyTitel, setInserter, setMerger, vetoableListeners

Methods inherited from class java.lang.Object

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

Field Detail

MERGE_EXTENSION

public static final Path MERGE_EXTENSION

Path of an ExtensionName that adds new Mergers

INSERTER_EXTENSION

public static final Path INSERTER_EXTENSION

Path of an ExtensionName that adds new Inserters

EXTENSION_PARAM

public static final String EXTENSION_PARAM

Name of a parameter of an ExtensionName pointing to this

See Also:

Constant Field Values

Constructor Detail

DefaultDockRelocator

public DefaultDockRelocator(DockController controller,
                            ControllerSetupCollection setup)

Creates a new manager.

Parameters:

controller - the controller whose dockables are moved

setup - observable informing this object when controller is set up.

Method Detail

isOnMove

public boolean isOnMove()

Description copied from interface: DockRelocator

Tells whether the user has currently grabbed a dockable and moves the dockable around.

Returns:

true if a Dockable is currently dragged

isOnPut

public boolean isOnPut()

Description copied from interface: DockRelocator

Tells whether this relocator currently puts a Dockable. A Dockable is put as soon as the user releases the mouse.

Returns:

true if a Dockable is moved

hasTarget

public boolean hasTarget()

Description copied from interface: DockRelocator

Tells whether the current drag and drop operation has a target, i.e. if the operation would be a success if it would end now.

Returns:

whether the current operation has a target, false if there is no operation running

createDirectRemote

public DirectRemoteRelocator createDirectRemote(Dockable dockable)

Description copied from interface: DockRelocator

Creates a device with which drag&drop operations concerning dockable can be initiated and executed.

Parameters:

dockable - the dockable which might be moved

Returns:

the new remote

createDirectRemote

public DirectRemoteRelocator createDirectRemote(Dockable dockable,
                                                boolean forceDrag)

Description copied from interface: DockRelocator

Creates a device with which drag&drop operations concerning dockable can be initiated and executed.

Parameters:

dockable - the dockable which might be moved

forceDrag - if this flag is set to true, then dragging will always start even if one of the usual conditions is not met. I.e. dragging will start even if dockable does not have a parent of even if the parent does not allow dragging. This flag should be used with caution.

Returns:

the new remote

createRemote

public RemoteRelocator createRemote(Dockable dockable)

Description copied from interface: DockRelocator

Creates a device with which drag&drop operations concerning dockable can be initiated and executed.

Parameters:

dockable - the dockable which might be moved

Returns:

the new remote

createRemote

public RemoteRelocator createRemote(Dockable dockable,
                                    boolean forceDrag)

Description copied from interface: DockRelocator

Creates a device with which drag&drop operations concerning dockable can be initiated and executed.

Parameters:

dockable - the dockable which might be moved

forceDrag - if this flag is set to true, then dragging will always start even if one of the usual conditions is not met. I.e. dragging will start even if dockable does not have a parent of even if the parent does not allow dragging. This flag should be used with caution.

Returns:

the new remote

executeOperation

protected boolean executeOperation(Dockable dockable,
                                   RelocateOperation operation)

Executes the drag and drop event operation.

Parameters:

dockable - a Dockable which is moved

operation - the operation to execute

Returns:

true if the operation was a success, false if the operation was canceled

preparePut

protected RelocateOperation preparePut(int mouseX,
                                       int mouseY,
                                       int titleX,
                                       int titleY,
                                       Dockable dockable)

Searches a station which can become the parent of dockable if the mouse is released at mouseX/mouseY.

Parameters:

mouseX - x-coordinate of the mouse on the screen

mouseY - y-coordinate of the mouse on the screen

titleX - x-coordinate of the dragged title or mouseX

titleY - y-coordinate of the dragged title or mouseY

dockable - a Dockable which is dragged

Returns:

the new parent of dockable or null

canMerge

protected boolean canMerge(StationDropOperation operation,
                           DockStation parent,
                           Dockable selection)

Checks whether the current Merger can merge parent with child.

Parameters:

operation - the operation that would be exected

parent - the new parent for the children of child

selection - the element whose children are to be removed

Returns:

true if a merge is possible

listStationsOrdered

protected List<DockStation> listStationsOrdered(int x,
                                                int y,
                                                Dockable moved)

Makes a list of all stations which are visible and contain the point x/y. The stations are ordered by their visibility.

Parameters:

x - x-coordinate on the screen

y - y-coordinate on the screen

moved - a Dockable which is dragged. If this is a station, then no child of the station will be in the resulting list.

Returns:

a list of stations

isCancelLocation

protected boolean isCancelLocation(int x,
                                   int y,
                                   Dockable moved)

Checks whether the mouse is at a location that cancels a drag and drop operation. This method just calls isCancelLocation(int, int, DockElementRepresentative) with all the DockElementRepresentative that can be found for moved.

Parameters:

x - x-coordinate on the screen

y - y-coordinate on the screen

moved - the item that was moved around

Returns:

true if the current location can never result in a valid drop operation

isCancelLocation

protected boolean isCancelLocation(int x,
                                   int y,
                                   DockElementRepresentative item)

Checks whether the mouse is at a location that cancels a drag and drop operation. The default implementation of this method always returns false.

Parameters:

x - x-coordinate on the screen

y - y-coordinate on the screen

item - the item that was moved around

Returns:

true if the current location can never result in a valid drop operation

isStationValid

@ClientOnly
protected boolean isStationValid(DockStation station)

Only stations passing this test are considered during drag and drop operation as new parent. Subclasses may override this method.

Parameters:

station - the station to check

Returns:

true if station should be considered as new parent

dragMousePressed

protected void dragMousePressed(MouseEvent e,
                                DockTitle title,
                                Dockable dockable)

Invoked by the listeners of a title to start a drag and drop operation.

Parameters:

e - the initializing event

title - the grabbed title, can be null if dockable is not null

dockable - the grabbed Dockable, can be null if title is not null

dragMousePressed

protected RemoteRelocator.Reaction dragMousePressed(int x,
                                                    int y,
                                                    int dx,
                                                    int dy,
                                                    int modifiers,
                                                    Dockable dockable,
                                                    boolean forceDrag)

Handles a mouse-pressed event.

Parameters:

x - the x-coordinate of the mouse

y - the y-coordinate of the mouse

dx - the x-coordinate of the mouse on its component

dy - the y-coordinate of the mouse on its component

modifiers - the state of the mouse, see InputEvent.getModifiersEx()

dockable - the dockable which is moved around

forceDrag - if this flag is set to true, then dragging will always start even if one of the usual conditions is not met. I.e. dragging will start even if dockable does not have a parent of even if the parent does not allow dragging. This flag should be used with caution.

Returns:

how this relocator reacts on the event

dragMouseDragged

protected void dragMouseDragged(MouseEvent e,
                                DockTitle title,
                                Dockable dockable)

Invoked while the user drags a title or Dockable.

Parameters:

e - the initializing event

title - the grabbed title, can be null if dockable is not null

dockable - the grabbed Dockable, can be null if title is not null

dragMouseDragged

protected RemoteRelocator.Reaction dragMouseDragged(int x,
                                                    int y,
                                                    int modifiers,
                                                    DockTitle title,
                                                    Dockable dockable,
                                                    boolean always,
                                                    boolean forceDrag)

Handles a mouse-pressed event.

Parameters:

x - the x-coordinate of the mouse

y - the y-coordinate of the mouse

modifiers - the state of the mouse, see InputEvent.getModifiersEx()

title - the title which might be grabbed by the mouse

dockable - the dockable which is moved around

always - true if the drag event should be executed and restrictions to this relocator ignored.

forceDrag - if this flag is set to true, then dragging will always start even if one of the usual conditions is not met. I.e. dragging will start even if dockable does not have a parent of even if the parent does not allow dragging. This flag should be used with caution.

Returns:

how this relocator reacts on the event

dragMouseDragged

protected RemoteRelocator.Reaction dragMouseDragged(int x,
                                                    int y,
                                                    int modifiers,
                                                    DockTitle title,
                                                    Dockable dockable,
                                                    boolean always,
                                                    boolean forceDrag,
                                                    boolean showMovingImage)

Handles a mouse-pressed event.

Parameters:

x - the x-coordinate of the mouse

y - the y-coordinate of the mouse

modifiers - the state of the mouse, see InputEvent.getModifiersEx()

title - the title which might be grabbed by the mouse

dockable - the dockable which is moved around

always - true if the drag event should be executed and restrictions to this relocator ignored.

forceDrag - if this flag is set to true, then dragging will always start even if one of the usual conditions is not met. I.e. dragging will start even if dockable does not have a parent of even if the parent does not allow dragging. This flag should be used with caution.

showMovingImage - whether to show a MovingImage

Returns:

how this relocator reacts on the event

dragMouseReleased

protected void dragMouseReleased(MouseEvent e,
                                 DockTitle title,
                                 Dockable dockable)

Invoked while the user drags a title or Dockable and releases a mouse button.

Parameters:

e - the initializing event

title - the grabbed title, can be null if dockable is not null

dockable - the grabbed Dockable, can be null if title is not null

dragMouseReleased

protected RemoteRelocator.Reaction dragMouseReleased(int x,
                                                     int y,
                                                     int modifiers,
                                                     Dockable dockable)

Handles a mouse-released event.

Parameters:

x - the x-coordinate of the mouse

y - the y-coordinate of the mouse

modifiers - the state of the mouse, see InputEvent.getModifiersEx()

dockable - the dockable which is moved around

Returns:

how this relocator reacts on the event

cancel

public void cancel()

Description copied from interface: DockRelocator

Cancels the current drag and drop operation (if there is any). All evidence of a DnD operation is to be removed immediatelly. Listeners will receive a canceled-event.