org.openstreetmap.josm.actions

Class MergeNodesAction

java.lang.Object

javax.swing.AbstractAction

org.openstreetmap.josm.actions.JosmAction

org.openstreetmap.josm.actions.MergeNodesAction

All Implemented Interfaces:

java.awt.event.ActionListener, java.io.Serializable, java.lang.Cloneable, java.util.EventListener, javax.swing.Action, Destroyable

public class MergeNodesAction
extends JosmAction

Merges a collection of nodes into one node. The "surviving" node will be the one with the lowest positive id. (I.e. it was uploaded to the server and is the oldest one.) However we use the location of the node that was selected *last*. The "surviving" node will be moved to that location if it is different from the last selected node.

Since:

422

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.openstreetmap.josm.actions.JosmAction

JosmAction.ActiveLayerChangeAdapter, JosmAction.LayerChangeAdapter, JosmAction.SelectionChangeAdapter

Field Summary

Fields inherited from class org.openstreetmap.josm.actions.JosmAction

sc

Fields inherited from class javax.swing.AbstractAction

changeSupport, enabled

Fields inherited from interface javax.swing.Action

ACCELERATOR_KEY, ACTION_COMMAND_KEY, DEFAULT, DISPLAYED_MNEMONIC_INDEX_KEY, LARGE_ICON_KEY, LONG_DESCRIPTION, MNEMONIC_KEY, NAME, SELECTED_KEY, SHORT_DESCRIPTION, SMALL_ICON

Constructor Summary

Constructors

Constructor and Description
MergeNodesAction() Constructs a new MergeNodesAction.

Method Summary

Modifier and Type	Method and Description
void	actionPerformed(java.awt.event.ActionEvent event)
static void	doMergeNodes(OsmDataLayer layer, java.util.Collection<Node> nodes, Node targetLocationNode) Merges the nodes in nodes at the specified node's location.
protected static java.util.List<Command>	fixParentWays(java.util.Collection<Node> nodesToDelete, Node targetNode) Fixes the parent ways referring to one of the nodes.
static Command	mergeNodes(java.util.Collection<Node> nodes, Node targetLocationNode) Merges the nodes in nodes at the specified node's location.
static Command	mergeNodes(java.util.Collection<Node> nodes, Node targetNode, Node targetLocationNode) Merges the nodes in nodes onto one of the nodes.
static Node	selectTargetLocationNode(java.util.List<Node> candidates) Select the location of the target node after merge.
static Node	selectTargetNode(java.util.Collection<Node> candidates) Find which node to merge into (i.e.
protected void	updateEnabledState() Override in subclasses to update the enabled state of the action when something in the JOSM state changes, i.e.
protected void	updateEnabledState(java.util.Collection<? extends OsmPrimitive> selection) Override in subclasses to update the enabled state of the action if the collection of selected primitives changes.

Methods inherited from class org.openstreetmap.josm.actions.JosmAction

buildActiveLayerChangeAdapter, buildLayerChangeAdapter, checkAndConfirmOutlyingOperation, destroy, getLayerManager, getShortcut, initEnabledState, installAdapters, listenToLayerChange, listenToSelectionChange, setHelpId, setTooltip, updateEnabledStateOnCurrentSelection, updateEnabledStateOnCurrentSelection, updateEnabledStateOnModifiableSelection, waitFuture

Methods inherited from class javax.swing.AbstractAction

addPropertyChangeListener, clone, firePropertyChange, getKeys, getPropertyChangeListeners, getValue, isEnabled, putValue, removePropertyChangeListener, setEnabled

Methods inherited from class java.lang.Object

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

Constructor Detail

MergeNodesAction

public MergeNodesAction()

Constructs a new MergeNodesAction.

Method Detail

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent event)

selectTargetLocationNode

public static Node selectTargetLocationNode(java.util.List<Node> candidates)

Select the location of the target node after merge.

Parameters:

candidates - the collection of candidate nodes

Returns:

the coordinates of this node are later used for the target node

selectTargetNode

public static Node selectTargetNode(java.util.Collection<Node> candidates)

Find which node to merge into (i.e. which one will be left)

Parameters:

candidates - the collection of candidate nodes

Returns:

the selected target node

fixParentWays

protected static java.util.List<Command> fixParentWays(java.util.Collection<Node> nodesToDelete,
                                                       Node targetNode)

Fixes the parent ways referring to one of the nodes. Replies null, if the ways could not be fixed, i.e. because a way would have to be deleted which is referred to by a relation.

Parameters:

nodesToDelete - the collection of nodes to be deleted

targetNode - the target node the other nodes are merged to

Returns:

a list of commands; null, if the ways could not be fixed

doMergeNodes

public static void doMergeNodes(OsmDataLayer layer,
                                java.util.Collection<Node> nodes,
                                Node targetLocationNode)

Merges the nodes in nodes at the specified node's location. Uses the dataset managed by layer as reference.

Parameters:

layer - layer the reference data layer. Must not be null

nodes - the collection of nodes. Ignored if null

targetLocationNode - this node's location will be used for the target node

Throws:

java.lang.IllegalArgumentException - if layer is null

mergeNodes

public static Command mergeNodes(java.util.Collection<Node> nodes,
                                 Node targetLocationNode)

Merges the nodes in nodes at the specified node's location.

Parameters:

nodes - the collection of nodes. Ignored if null.

targetLocationNode - this node's location will be used for the targetNode.

Returns:

The command necessary to run in order to perform action, or null if there is nothing to do

Throws:

java.lang.IllegalArgumentException - if layer is null

Since:

12689

mergeNodes

public static Command mergeNodes(java.util.Collection<Node> nodes,
                                 Node targetNode,
                                 Node targetLocationNode)

Merges the nodes in nodes onto one of the nodes.

Parameters:

nodes - the collection of nodes. Ignored if null.

targetNode - the target node the collection of nodes is merged to. Must not be null.

targetLocationNode - this node's location will be used for the targetNode.

Returns:

The command necessary to run in order to perform action, or null if there is nothing to do

Throws:

java.lang.IllegalArgumentException - if layer is null

updateEnabledState

protected void updateEnabledState()

Description copied from class: JosmAction

Override in subclasses to update the enabled state of the action when something in the JOSM state changes, i.e. when a layer is removed or added. See JosmAction.updateEnabledState(Collection) to respond to changes in the collection of selected primitives. Default behavior is empty.

Overrides:

updateEnabledState in class JosmAction

See Also:

JosmAction.updateEnabledState(Collection), JosmAction.initEnabledState(), JosmAction.listenToLayerChange()

updateEnabledState

protected void updateEnabledState(java.util.Collection<? extends OsmPrimitive> selection)

Description copied from class: JosmAction

Override in subclasses to update the enabled state of the action if the collection of selected primitives changes. This method is called with the new selection.

Overrides:

updateEnabledState in class JosmAction

Parameters:

selection - the collection of selected primitives; may be empty, but not null

See Also:

JosmAction.updateEnabledState(), JosmAction.initEnabledState(), JosmAction.listenToSelectionChange()