de.jaret.util.ui.timebars.mod
Interface IntervalModificator

All Known Subinterfaces:

IIntervalModificator

All Known Implementing Classes:

DefaultIntervalModificator

public interface IntervalModificator

Interface for deciding about interval modifications through the time bar viewer (visual editing).

Version:

$Id: IntervalModificator.java 800 2008-12-27 22:27:33Z kliem $

Author:

Peter Kliem

Method Summary

double	getSecondGridSnap() If this method returns a positive value this is used as the modification interval.
boolean	isApplicable(TimeBarRow row, de.jaret.util.date.Interval interval) Decides whether the interval modificator is responsible for a given interval in a row.
boolean	isShiftingAllowed(TimeBarRow row, de.jaret.util.date.Interval interval) Decide whether a given interval in a row is allowed to be shifted.
boolean	isSizingAllowed(TimeBarRow row, de.jaret.util.date.Interval interval) Decide whether a given interval in a row is allowed to be sized.
boolean	newBeginAllowed(TimeBarRow row, de.jaret.util.date.Interval interval, de.jaret.util.date.JaretDate newBegin) Decide whether a given interval in a given row can change the begin date.
boolean	newEndAllowed(TimeBarRow row, de.jaret.util.date.Interval interval, de.jaret.util.date.JaretDate newEnd) Decide whether a given interval in a given row can change the end date.
boolean	shiftAllowed(TimeBarRow row, de.jaret.util.date.Interval interval, de.jaret.util.date.JaretDate newBegin) Decide whether an interval may be shifted in time to a new begin date.

Method Detail

isApplicable

boolean isApplicable(TimeBarRow row,
                     de.jaret.util.date.Interval interval)

Decides whether the interval modificator is responsible for a given interval in a row.

Parameters:

row - row of the interval

interval - interval in question

Returns:

true if this modificator should be questioned

isSizingAllowed

boolean isSizingAllowed(TimeBarRow row,
                        de.jaret.util.date.Interval interval)

Decide whether a given interval in a row is allowed to be sized.

Parameters:

row - row of the interval

interval - interval in question

Returns:

true if the interval may be sized

newBeginAllowed

boolean newBeginAllowed(TimeBarRow row,
                        de.jaret.util.date.Interval interval,
                        de.jaret.util.date.JaretDate newBegin)

Decide whether a given interval in a given row can change the begin date.

Parameters:

row - row of the interval

interval - interval to be modified

newBegin - new begin date

Returns:

true if the modification is allowed

newEndAllowed

boolean newEndAllowed(TimeBarRow row,
                      de.jaret.util.date.Interval interval,
                      de.jaret.util.date.JaretDate newEnd)

Decide whether a given interval in a given row can change the end date.

Parameters:

row - row of the interval

interval - interval to be modified

newEnd - new end date

Returns:

true if the modification is allowed

isShiftingAllowed

boolean isShiftingAllowed(TimeBarRow row,
                          de.jaret.util.date.Interval interval)

Decide whether a given interval in a row is allowed to be shifted.

Parameters:

row - row of the interval

interval - interval in question

Returns:

true if the interval may be shifted

shiftAllowed

boolean shiftAllowed(TimeBarRow row,
                     de.jaret.util.date.Interval interval,
                     de.jaret.util.date.JaretDate newBegin)

Decide whether an interval may be shifted in time to a new begin date.

Parameters:

row - row of the interval

interval - interval to be modified

newBegin - new begin date

Returns:

true if the modification is allowed

getSecondGridSnap

double getSecondGridSnap()

If this method returns a positive value this is used as the modification interval. The value is given in seconds.

Returns:

the positive grid snap or a negative value indicating no grid snap