pamScrollSystem
Class RealTimeScrollManager

java.lang.Object
  pamScrollSystem.AbstractScrollManager
      pamScrollSystem.RealTimeScrollManager

public class RealTimeScrollManager
extends AbstractScrollManager

Field Summary

Fields inherited from class pamScrollSystem.AbstractScrollManager

pamScrollers

Constructor Summary

RealTimeScrollManager()

Method Summary

void	centreDataAt(PamDataBlock dataBlock, long menuMouseTime) Centre all data in all data blocks at the given time
long	checkGapPos(AbstractPamScroller abstractPamScroller, long oldMin, long oldMax, long newMin, long newMax, int i) Check to see whether or not we are scrolling into a data gap.
long	checkMaximumTime(long requestedTime) Check the maximum time requested by a scroll bar doesn't go beyond the end of the data
long	checkMinimumTime(long requestedTime) Check the minimum time requested by a scroll bar doesn't go below the start of the data
void	moveInnerScroller(AbstractPamScroller scroller, long newValue) Move the scroll bar component of a scroller.
void	moveOuterScroller(AbstractPamScroller scroller, long newMin, long newMax) Move the data load component of a scroller.
void	notifyModelChanged(int changeType)
void	reLoad() Command telling manager to reload it's data.
void	startDataAt(PamDataBlock dataBlock, long menuMouseTime) Start all data in all data blocks at the given time

Methods inherited from class pamScrollSystem.AbstractScrollManager

addPamScroller, coupleScroller, getScrollManager, getStandardOptionsMenu, isInGap, removePamScroller, uncoupleScroller

Methods inherited from class java.lang.Object

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

Constructor Detail

RealTimeScrollManager

public RealTimeScrollManager()

Method Detail

checkMaximumTime

public long checkMaximumTime(long requestedTime)

Description copied from class: AbstractScrollManager

Check the maximum time requested by a scroll bar doesn't go beyond the end of the data

Specified by:

checkMaximumTime in class AbstractScrollManager

Parameters:

requestedTime - requested time in millis.

Returns:

the minimum of the requested time and the actual end time of the data

checkMinimumTime

public long checkMinimumTime(long requestedTime)

Description copied from class: AbstractScrollManager

Check the minimum time requested by a scroll bar doesn't go below the start of the data

Specified by:

checkMinimumTime in class AbstractScrollManager

Returns:

the maximum of the requested time and the actual start time of the data

moveInnerScroller

public void moveInnerScroller(AbstractPamScroller scroller,
                              long newValue)

Description copied from class: AbstractScrollManager

Move the scroll bar component of a scroller. This should not cause the reloading of any data, but other scroll bars should be notified of any changes.

Specified by:

moveInnerScroller in class AbstractScrollManager

Parameters:

scroller - scroller that moved

newValue - new value (time in milliseconds).

moveOuterScroller

public void moveOuterScroller(AbstractPamScroller scroller,
                              long newMin,
                              long newMax)

Description copied from class: AbstractScrollManager

Move the data load component of a scroller. This should cause data to be reloaded and will need to notify all other scrollers incase they also need to shuffle along a bit.

Specified by:

moveOuterScroller in class AbstractScrollManager

Parameters:

scroller - scroller that changed

newMin - new data min value in millis

newMax - new data max value in millis

notifyModelChanged

public void notifyModelChanged(int changeType)

Specified by:

notifyModelChanged in class AbstractScrollManager

startDataAt

public void startDataAt(PamDataBlock dataBlock,
                        long menuMouseTime)

Description copied from class: AbstractScrollManager

Start all data in all data blocks at the given time

Specified by:

startDataAt in class AbstractScrollManager

menuMouseTime - time in milliseconds

centreDataAt

public void centreDataAt(PamDataBlock dataBlock,
                         long menuMouseTime)

Description copied from class: AbstractScrollManager

Centre all data in all data blocks at the given time

Specified by:

centreDataAt in class AbstractScrollManager

menuMouseTime - time in milliseconds

reLoad

public void reLoad()

Description copied from class: AbstractScrollManager

Command telling manager to reload it's data.

Specified by:

reLoad in class AbstractScrollManager

checkGapPos

public long checkGapPos(AbstractPamScroller abstractPamScroller,
                        long oldMin,
                        long oldMax,
                        long newMin,
                        long newMax,
                        int i)

Description copied from class: AbstractScrollManager

Check to see whether or not we are scrolling into a data gap. Rules exist for stopping / starting / jumping over gaps depending on the current state and the new position of the scroller.

Specified by:

checkGapPos in class AbstractScrollManager

Parameters:

abstractPamScroller - PamScroller that moved

oldMin - old minimum time

oldMax - old maximum time

newMin - new minimum time

newMax - new maximum time

i - direction of scroll +1 = forward, -1 = backward, 0 = plonked down by mouse on datamap.

Returns:

new minimum position. Calling function must then work out the new maximum position.