GroupMarker (Eclipse Platform API Specification)

java.lang.Object
- org.eclipse.jface.action.ContributionItem
- - org.eclipse.jface.action.AbstractGroupMarker
  - - org.eclipse.jface.action.GroupMarker

All Implemented Interfaces:

IContributionItem

Direct Known Subclasses:

CoolItemGroupMarker
```
public class GroupMarker
extends AbstractGroupMarker
```
A group marker is a special kind of contribution item denoting the beginning of a group. These groups are used to structure the list of items. Unlike regular contribution items and separators, group markers have no visual representation. The name of the group is synonymous with the contribution item id.
This class may be instantiated; it is not intended to be subclassed outside the framework.

Restriction:

This class is not intended to be subclassed by clients.

Constructor Summary

Constructors
Constructor Description

GroupMarker(String groupName)
Create a new group marker with the given name.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`isVisible()`	The `GroupMarker` implementation of this method returns `false` since group markers are always invisible.

Methods inherited from class org.eclipse.jface.action.AbstractGroupMarker
getGroupName, isEnabled, isGroupMarker

Methods inherited from class org.eclipse.jface.action.ContributionItem
dispose, fill, fill, fill, fill, getId, getParent, isDirty, isDynamic, isSeparator, saveWidgetState, setId, setParent, setVisible, toString, update, update

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - GroupMarker
```
public GroupMarker(String groupName)
```
    Create a new group marker with the given name. The group name must not be null or the empty string. The group name is also used as the item id.
    
    Parameters:
    
    groupName - the name of the group
- Method Detail
  - isVisible
```
public boolean isVisible()
```
    The GroupMarker implementation of this method returns false since group markers are always invisible.
    
    Specified by:
    
    isVisible in interface IContributionItem
    
    Overrides:
    
    isVisible in class ContributionItem
    
    Returns:
    
    true if this item is visible, and false otherwise