// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.command;
import static org.openstreetmap.josm.tools.I18n.tr;
import java.util.Arrays;
import java.util.Collection;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.MutableTreeNode;
import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.osm.OsmPrimitive;
/**
* A command consisting of a sequence of other commands. Executes the other commands
* and undo them in reverse order.
* @author imi
*/
public class SequenceCommand extends Command {
/**
* The command sequenz to be executed.
*/
private Command[] sequence;
private boolean sequence_complete;
private final String name;
public boolean continueOnError = false;
/**
* Create the command by specifying the list of commands to execute.
* @param sequenz The sequence that should be executed.
*/
public SequenceCommand(String name, Collection<Command> sequenz) {
super();
this.name = name;
this.sequence = new Command[sequenz.size()];
this.sequence = sequenz.toArray(this.sequence);
}
/**
* Convenient constructor, if the commands are known at compile time.
*/
public SequenceCommand(String name, Command... sequenz) {
this(name, Arrays.asList(sequenz));
}
@Override public boolean executeCommand() {
for (int i=0; i < sequence.length; i++) {
Command c = sequence[i];
boolean result = c.executeCommand();
if (!result) {
Main.debug("SequenceCommand, executing command[" + i + "] " + c + " result: " + result);
}
if (!result && !continueOnError) {
this.undoCommands(i-1);
return false;
}
}
sequence_complete = true;
return true;
}
public Command getLastCommand() {
if(sequence.length == 0)
return null;
return sequence[sequence.length-1];
}
private void undoCommands(int start) {
// We probably aborted this halfway though the
// execution sequence because of a sub-command
// error. We already undid the sub-commands.
if (!sequence_complete)
return;
for (int i = start; i >= 0; --i) {
sequence[i].undoCommand();
}
}
@Override public void undoCommand() {
this.undoCommands(sequence.length-1);
}
@Override public void fillModifiedData(Collection<OsmPrimitive> modified, Collection<OsmPrimitive> deleted, Collection<OsmPrimitive> added) {
for (Command c : sequence) {
c.fillModifiedData(modified, deleted, added);
}
}
@Override public MutableTreeNode description() {
DefaultMutableTreeNode root = new DefaultMutableTreeNode(tr("Sequence")+": "+name);
for (Command c : sequence) {
root.add(c.description());
}
return root;
}
}