package net.sourceforge.ganttproject.task.dependency.constraint;
import java.util.Date;
import net.sourceforge.ganttproject.GanttCalendar;
import net.sourceforge.ganttproject.GanttTaskRelationship;
import net.sourceforge.ganttproject.language.GanttLanguage;
import net.sourceforge.ganttproject.task.Task;
import net.sourceforge.ganttproject.task.TaskActivity;
import net.sourceforge.ganttproject.task.TaskMutator;
import net.sourceforge.ganttproject.task.dependency.TaskDependency;
import net.sourceforge.ganttproject.task.dependency.TaskDependencyConstraint;
import net.sourceforge.ganttproject.task.dependency.TaskDependency.ActivityBinding;
/**
* Dependant task finishes not earlier than dependee starts Created by IntelliJ
* IDEA. User: bard
*/
public class StartFinishConstraintImpl extends ConstraintImpl implements
TaskDependencyConstraint {
public StartFinishConstraintImpl() {
super(GanttTaskRelationship.SF, GanttLanguage.getInstance().getText(
"startfinish"));
}
public TaskDependencyConstraint.Collision getCollision() {
TaskDependencyConstraint.Collision result = null;
Task dependee = getDependency().getDependee();
Task dependant = getDependency().getDependant();
GanttCalendar dependeeStart = dependee.getStart();
GanttCalendar dependantEnd = dependant.getEnd();
//
int difference = getDependency().getDifference();
GanttCalendar comparisonDate = dependeeStart.Clone();
comparisonDate.add(difference);
boolean isActive = getDependency().getHardness()==TaskDependency.Hardness.RUBBER ? dependantEnd
.compareTo(comparisonDate) < 0 : dependantEnd
.compareTo(comparisonDate) != 0;
// GanttCalendar acceptableStart = dependant.getStart();
GanttCalendar acceptableStart = dependee.getStart().Clone();
if (isActive) {
Task clone = dependee.unpluggedClone();
TaskMutator mutator = clone.createMutator();
mutator.shift(-dependant.getDuration().getLength());
acceptableStart = clone.getStart();
}
addDelay(acceptableStart);
result = new TaskDependencyConstraint.DefaultCollision(acceptableStart,
TaskDependencyConstraint.Collision.START_LATER_VARIATION,
isActive);
return result;
}
public ActivityBinding getActivityBinding() {
TaskActivity[] dependantActivities = getDependency().getDependant()
.getActivities();
TaskActivity[] dependeeActivities = getDependency().getDependee()
.getActivities();
TaskActivity theDependant = dependantActivities[dependantActivities.length - 1];
TaskActivity theDependee = dependeeActivities[0];
return new DependencyActivityBindingImpl(theDependant, theDependee,
new Date[] { theDependant.getEnd(), theDependee.getStart() });
}
}