IlvTimeScrollable (Perforce JViews 10.0 API)

All Known Implementing Classes:

IlvBasicTimeScrollController, IlvGanttChart, IlvGanttSheet, IlvGanttTimeScale, IlvHierarchyChart, IlvJScrollGanttSheet, IlvScheduleChart, IlvTimeScale, IlvTimeScrollBar, IlvTimeScrollController, IlvTimeScrollSupport
```
public interface IlvTimeScrollable
```
The IlvTimeScrollable interface defines the behavior of a component whose time interval can be scrolled. Two scrolling modes are supported:
- Bounded scrolling mode: In this mode, time scrolling is constrained by the minimum visible time and the maximum visible time. Both values must be valid and non-null.
  In bounded scrolling mode there are four interrelated time properties: minVisibleTime, maxVisibleTime, visibleTime, and visibleDuration. These four values define two nested ranges like this:
```
  minVisibleTime <= visibleTime <= visibleTime+visibleDuration <= maxVisibleTime
```
  The time-scrollable component enforces this relationship by correcting or trimming properties according to the following rules:
  - The setMinVisibleTime(java.util.Date) and setMaxVisibleTime(java.util.Date) methods first validate that:
```
  minVisibleTime <= maxVisibleTime 
```
    If not, an IllegalArgumentException is thrown. Next, the visible time and visible duration properties may be trimmed (in that order), to fit within the new min-max interval.
  - The setVisibleTime(java.util.Date) and setVisibleDuration(ilog.views.gantt.IlvDuration) methods trim their argument to fit within the limits defined by the other three properties. For example if maxVisibleTime.equals(visibleTime.add(IlvDuration.ONE_DAY)), then setVisibleDuration(IlvDuration.ONE_WEEK) would change the duration to IlvDuration.ONE_DAY.
  The time-scrollable component should use the IlvTimeScrollUtil.trimInterval(ilog.views.gantt.IlvTimeInterval, java.util.Date, java.util.Date, ilog.views.gantt.IlvDuration) method to perform consistent validation and trimming of the time value arguments.
- Unbounded scrolling mode: In this mode, the minimum visible time and the maximum visible time are undefined and are set to null.
  Even in unbounded scrolling mode, there is an inherent limitation on the minimum and maximum times that can be scrolled to. As in bounded scrolling mode, this can be enforced by having the time-scrollable component use the IlvTimeScrollUtil.trimInterval(ilog.views.gantt.IlvTimeInterval, java.util.Date, java.util.Date, ilog.views.gantt.IlvDuration) method to perform validation and trimming of the time value arguments.
Each time-scrollable that is a user interface component is responsible for updating its own duration value in order to maintain a constant zoom factor when it is resized. Swing resizes user interface components with indeterminate timing and this avoids potential time interval desynchronization across multiple components in the same interface. When a time-scrollable component is resized it must fire a VisibleDurationChangedEvent that has been created with viewResized=true.

Field Summary

Fields
Modifier and Type Field and Description

static IlvDuration DEFAULT_MINIMUM_DURATION
The default minimum duration that a time scrollable can show.

Fields
Modifier and Type	Field and Description
`static IlvDuration`	`DEFAULT_MINIMUM_DURATION` The default minimum duration that a time scrollable can show.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method and Description
`void`	`addTimeScrollListener(TimeScrollListener listener)` Adds the specified listener to receive visible time and duration events from this time scrollable.
`Date`	`getMaxVisibleTime()` Returns the maximum time that the time scrollable can show in bounded scrolling mode.
`IlvDuration`	`getMinVisibleDuration()` Returns the minimum duration that this time scrollable can show.
`Date`	`getMinVisibleTime()` Returns the minimum time that the time scrollable can show in bounded scrolling mode.
`IlvDuration`	`getVisibleDuration()` Returns the duration of the time interval displayed by the time scrollable.
`IlvTimeInterval`	`getVisibleInterval()` Returns the time interval displayed by the time scrollable.
`Date`	`getVisibleTime()` Returns the beginning of the time interval displayed by the time scrollable.
`void`	`removeTimeScrollListener(TimeScrollListener listener)` Removes the specified listener so that it will no longer receive visible time and duration events from this time scrollable.
`void`	`setMaxVisibleTime(Date max)` Sets the maximum time that the time scrollable can show in bounded scrolling mode.
`void`	`setMinVisibleDuration(IlvDuration duration)` Sets the minimum duration that this time scrollable can show.
`void`	`setMinVisibleTime(Date min)` Sets the minimum time that the time scrollable can show in bounded scrolling mode.
`void`	`setVisibleDuration(IlvDuration duration)` Sets the duration of the time interval displayed by the time scrollable.
`void`	`setVisibleInterval(Date time, IlvDuration duration)` Sets the time interval displayed by the time scrollable.
`void`	`setVisibleTime(Date time)` Sets the beginning of the time interval displayed by the time scrollable.

- Field Detail
  - DEFAULT_MINIMUM_DURATION
```
static final IlvDuration DEFAULT_MINIMUM_DURATION
```
    The default minimum duration that a time scrollable can show. The default value is one minute.
    
    Since:
    
    JViews 8.5
    
    See Also:
    
    getMinVisibleDuration()
- Method Detail
  - getMinVisibleTime
```
Date getMinVisibleTime()
```
    Returns the minimum time that the time scrollable can show in bounded scrolling mode.
    
    Returns:
    
    The minimum visible time or null if the time scrollable is in unbounded scrolling mode.
    
    See Also:
    
    setMinVisibleTime(java.util.Date)
  - setMinVisibleTime
```
void setMinVisibleTime(Date min)
```
    Sets the minimum time that the time scrollable can show in bounded scrolling mode. The current visible time and duration are trimmed to fit the new min-max interval by calling the IlvTimeScrollUtil.trimInterval(ilog.views.gantt.IlvTimeInterval, java.util.Date, java.util.Date, ilog.views.gantt.IlvDuration) method. A minVisibleTimeChanged event is then fired to all registered listeners. If min > maxVisibleTime an IllegalArgumentException will be thrown.
    
    Parameters:
    
    min - The minimum visible time or null to set the time scrollable to unbounded scrolling mode.
    
    See Also:
    
    getMinVisibleTime()
  - getMaxVisibleTime
```
Date getMaxVisibleTime()
```
    Returns the maximum time that the time scrollable can show in bounded scrolling mode.
    
    Returns:
    
    The maximum visible time or null if the time scrollable is in unbounded scrolling mode.
    
    See Also:
    
    setMaxVisibleTime(java.util.Date)
  - setMaxVisibleTime
```
void setMaxVisibleTime(Date max)
```
    Sets the maximum time that the time scrollable can show in bounded scrolling mode. The current visible time and duration are trimmed to fit the new min-max interval by calling the IlvTimeScrollUtil.trimInterval(ilog.views.gantt.IlvTimeInterval, java.util.Date, java.util.Date, ilog.views.gantt.IlvDuration) method. A maxVisibleTimeChanged event is then fired to all registered listeners. If max < minVisibleTime an IllegalArgumentException will be thrown.
    
    Parameters:
    
    max - The maximum visible time or null to set the time scrollable to unbounded scrolling mode.
    
    See Also:
    
    getMaxVisibleTime()
  - getMinVisibleDuration
```
IlvDuration getMinVisibleDuration()
```
    Returns the minimum duration that this time scrollable can show. This value indicates the maximum zoom level that the time scrollable can display. The default value is 1 minute.
    
    Returns:
    
    The minimum visible duration.
    
    Since:
    
    JViews 8.5
    
    See Also:
    
    setMinVisibleDuration(ilog.views.gantt.IlvDuration)
  - setMinVisibleDuration
```
void setMinVisibleDuration(IlvDuration duration)
```
    Sets the minimum duration that this time scrollable can show. This specifies the maximum zoom level that the time scrollable can display.
    
    Parameters:
    
    duration - The minimum visible duration.
    
    Since:
    
    JViews 8.5
    
    See Also:
    
    getMinVisibleDuration()
  - getVisibleTime
```
Date getVisibleTime()
```
    Returns the beginning of the time interval displayed by the time scrollable.
    
    Returns:
    
    The beginning of the displayed time interval.
    
    See Also:
    
    setVisibleTime(java.util.Date)
  - setVisibleTime
```
void setVisibleTime(Date time)
```
    Sets the beginning of the time interval displayed by the time scrollable. The specified time value is compared against the min and max visible times and is trimmed if necessary by calling the IlvTimeScrollUtil.trimInterval(ilog.views.gantt.IlvTimeInterval, java.util.Date, java.util.Date, ilog.views.gantt.IlvDuration) method. A VisibleTimeChangedEvent is then fired to all registered listeners. If you are changing both the visible time and duration, it is preferable to use the setVisibleInterval(java.util.Date, ilog.views.gantt.IlvDuration) method instead.
    
    Parameters:
    
    time - The new time value.
    
    See Also:
    
    getVisibleTime()
  - getVisibleDuration
```
IlvDuration getVisibleDuration()
```
    Returns the duration of the time interval displayed by the time scrollable.
    
    Returns:
    
    The duration of the displayed time interval.
    
    See Also:
    
    setVisibleDuration(ilog.views.gantt.IlvDuration)
  - setVisibleDuration
```
void setVisibleDuration(IlvDuration duration)
```
    Sets the duration of the time interval displayed by the time scrollable. The specified duration is compared against the min and max visible times and is trimmed if necessary by calling the IlvTimeScrollUtil.trimInterval(ilog.views.gantt.IlvTimeInterval, java.util.Date, java.util.Date, ilog.views.gantt.IlvDuration) method. A VisibleDurationChangedEvent is then fired to all registered listeners. If you are changing both the visible time and duration, it is preferable to use the setVisibleInterval(java.util.Date, ilog.views.gantt.IlvDuration) method instead.
    
    Parameters:
    
    duration - The new duration value.
    
    See Also:
    
    getVisibleDuration()
  - getVisibleInterval
```
IlvTimeInterval getVisibleInterval()
```
    Returns the time interval displayed by the time scrollable.
    
    Returns:
    
    The displayed time interval.
    
    Since:
    
    JViews 3.5
    
    See Also:
    
    setVisibleInterval(java.util.Date, ilog.views.gantt.IlvDuration)
  - setVisibleInterval
```
void setVisibleInterval(Date time,
                        IlvDuration duration)
```
    Sets the time interval displayed by the time scrollable. The specified interval is compared against the min and max visible times and is trimmed if necessary by calling the IlvTimeScrollUtil.trimInterval(ilog.views.gantt.IlvTimeInterval, java.util.Date, java.util.Date, ilog.views.gantt.IlvDuration) method. This method then fires an adjusting VisibleTimeChangedEvent followed by a VisibleDurationChangedEvent to all registered listeners.
    
    Parameters:
    
    time - The new time value.
    
    duration - The new duration value.
  - addTimeScrollListener
```
void addTimeScrollListener(TimeScrollListener listener)
```
    Adds the specified listener to receive visible time and duration events from this time scrollable.
    
    Parameters:
    
    listener - The listener that will be subscribed to subsequent time scroll events.
    
    See Also:
    
    removeTimeScrollListener(ilog.views.gantt.event.TimeScrollListener)
  - removeTimeScrollListener
```
void removeTimeScrollListener(TimeScrollListener listener)
```
    Removes the specified listener so that it will no longer receive visible time and duration events from this time scrollable.
    
    Parameters:
    
    listener - The listener that will be unsubscribed from receiving time scroll events.
    
    See Also:
    
    addTimeScrollListener(ilog.views.gantt.event.TimeScrollListener)

Interface IlvTimeScrollable

Field Summary

Method Summary

Field Detail

DEFAULT_MINIMUM_DURATION

Method Detail

getMinVisibleTime

setMinVisibleTime

getMaxVisibleTime

setMaxVisibleTime

getMinVisibleDuration

setMinVisibleDuration

getVisibleTime

setVisibleTime

getVisibleDuration

setVisibleDuration

getVisibleInterval

setVisibleInterval

addTimeScrollListener

removeTimeScrollListener