Class GanttTask

java.lang.Object
com.codename1.scheduling.GanttTask
public final class GanttTask extends Object

A task in a project: a piece of work, a milestone, or a summary of the tasks under it.

A task with children is a summary, and its dates are the span of its children. A task with no children and no duration is a milestone. For any other, duration is working time in the project's WorkCalendar, and ProjectScheduler works out start and end from the dependencies, the constraint and the leveling delay. A task that is scheduled manually keeps the dates it was given.

Add a task to a ProjectModel before using it; the model owns the tree.

  • Constructor Details

    • GanttTask

      public GanttTask(String id, String name)

    • GanttTask

      public GanttTask(String id, String name, long duration)
      A task of duration milliseconds of working time.

  • Method Details

    • getId

      public String getId()

    • getName

      public String getName()

    • setName

      public GanttTask setName(String v)

    • getParent

      public GanttTask getParent()

    • getChildren

      public List<GanttTask> getChildren()

    • isSummary

      public boolean isSummary()

    • isMilestone

      public boolean isMilestone()

    • getLevel

      public int getLevel()
      How deep the task is in the tree; a top level task is at 0.

    • isDescendantOf

      public boolean isDescendantOf(GanttTask other)
      Whether other is this task's parent, or its parent's, and so on.

    • getDuration

      public long getDuration()
      Working time the task takes, in milliseconds. Ignored for a summary.

    • setDuration

      public GanttTask setDuration(long millis)

    • getStart

      public long getStart()

    • getEnd

      public long getEnd()

    • setDates

      public GanttTask setDates(long start, long end)
      Sets the dates directly. The scheduler overwrites them unless the task is scheduled manually.

    • getPercentComplete

      public int getPercentComplete()
      0 to 100.

    • setPercentComplete

      public GanttTask setPercentComplete(int v)

    • getConstraint

      public GanttTask.Constraint getConstraint()

    • getConstraintDate

      public long getConstraintDate()

    • setConstraint

      public GanttTask setConstraint(GanttTask.Constraint type, long date)

    • isManuallyScheduled

      public boolean isManuallyScheduled()
      Whether the task keeps the dates it was given instead of being moved by its dependencies. Its successors still follow it.

    • setManuallyScheduled

      public GanttTask setManuallyScheduled(boolean v)

    • getLevelingDelay

      public long getLevelingDelay()
      Working time the task is held back by after its dependencies would let it start. ResourceLeveler sets it; zero undoes leveling.

    • setLevelingDelay

      public GanttTask setLevelingDelay(long millis)

    • getPriority

      public int getPriority()
      0 to 1000; when two tasks want the same resource the higher keeps its dates. 1000 is never delayed by leveling.

    • setPriority

      public GanttTask setPriority(int v)

    • hasBaseline

      public boolean hasBaseline()

    • getBaselineStart

      public long getBaselineStart()

    • getBaselineEnd

      public long getBaselineEnd()

    • setBaseline

      public GanttTask setBaseline(long start, long end)
      Records the dates the task was planned at, to compare with later.

    • clearBaseline

      public GanttTask clearBaseline()

    • getAssignments

      public List<ResourceAssignment> getAssignments()

    • assign

      public GanttTask assign(String resourceId)
      Assigns a resource full time.

    • assign

      public GanttTask assign(String resourceId, float units)
      Assigns units of a resource: 0.5f is half of somebody's time.

    • unassign

      public GanttTask unassign(String resourceId)

    • getUnits

      public float getUnits(String resourceId)
      The units of a resource the task uses, 0 when it is not assigned.

    • getColor

      public int getColor()
      An RGB colour for the bar, or -1 for the theme's.

    • setColor

      public GanttTask setColor(int v)

    • getUIID

      public String getUIID()
      The UIID the bar is drawn with in place of GanttBar, or null.

    • setUIID

      public GanttTask setUIID(String v)

    • getUserObject

      public Object getUserObject()

    • setUserObject

      public GanttTask setUserObject(Object v)

    • getEarlyStart

      public long getEarlyStart()
      The earliest the task can start, from the last scheduling pass.

    • getEarlyFinish

      public long getEarlyFinish()

    • getLateStart

      public long getLateStart()
      The latest the task can start without delaying the project.

    • getLateFinish

      public long getLateFinish()

    • getTotalSlack

      public long getTotalSlack()
      Working time the task can slip by without delaying the project. Negative when a constraint or a deadline cannot be met.

    • getFreeSlack

      public long getFreeSlack()
      Working time the task can slip by without delaying any successor.

    • isCritical

      public boolean isCritical()
      Whether the task is on the critical path: any slip delays the project.

    • isConstraintViolated

      public boolean isConstraintViolated()
      Whether the dependencies pushed the task past a "no later than" constraint, or a "must" constraint pulled it ahead of a predecessor.

    • toString

      public String toString()
      Description copied from class: Object
      Returns a string representation of the object. In general, the toString method returns a string that "textually represents" this object. The result should be a concise but informative representation that is easy for a person to read. It is recommended that all subclasses override this method. The toString method for class Object returns a string consisting of the name of the class of which the object is an instance, the at-sign character `@', and the unsigned hexadecimal representation of the hash code of the object. In other words, this method returns a string equal to the value of: getClass().getName() + '@' + Integer.toHexString(hashCode())
      Overrides:
      toString in class Object