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Eclipse Platform
Release 3.0

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org.eclipse.jface.action
Interface IContributionItem

All Known Subinterfaces:

IMenuManager

All Known Implementing Classes:

ContributionItem, MenuManager, SubContributionItem, SubMenuManager

public interface IContributionItem

A contribution item represents a contribution to a shared UI resource such as a menu or tool bar. More generally, contribution items are managed by a contribution manager. For instance, in a tool bar a contribution item is a tool bar button or a separator. In a menu bar a contribution item is a menu, and in a menu a contribution item is a menu item or separator.

A contribution item can realize itself in different SWT widgets, using the different fill methods. The same type of contribution item can be used with a MenuBarManager, ToolBarManager, CoolBarManager, or a StatusLineManager.

This interface is internal to the framework; it should not be implemented outside the framework.

See Also:

IContributionManager

Method Summary

void	dispose() Disposes of this contribution item.
void	fill(Composite parent) Fills the given composite control with controls representing this contribution item.
void	fill(CoolBar parent, int index) Fills the given cool bar with controls representing this contribution item.
void	fill(Menu parent, int index) Fills the given menu with controls representing this contribution item.
void	fill(ToolBar parent, int index) Fills the given tool bar with controls representing this contribution item.
String	getId() Returns the identifier of this contribution item.
boolean	isDirty() Returns whether this contribution item is dirty.
boolean	isDynamic() Returns whether this contribution item is dynamic.
boolean	isEnabled() Returns whether this contribution item is enabled.
boolean	isGroupMarker() Returns whether this contribution item is a group marker.
boolean	isSeparator() Returns whether this contribution item is a separator.
boolean	isVisible() Returns whether this contribution item is visibile within its manager.
void	saveWidgetState() Saves any state information of the control(s) owned by this contribution item.
void	setParent(IContributionManager parent) Sets the parent manager of this item
void	setVisible(boolean visible) Sets whether this contribution item is visibile within its manager.
void	update() Updates any SWT controls cached by this contribution item with any changes which have been made to this contribution item since the last update.
void	update(String id) Updates any SWT controls cached by this contribution item with changes for the the given property.

Method Detail

dispose

public void dispose()

Disposes of this contribution item. Called by the parent contribution manager when the manager is being disposed. Clients should not call this method directly.

Since:

2.1

fill

public void fill(Composite parent)

Fills the given composite control with controls representing this contribution item. Used by StatusLineManager.

Parameters:

parent - the parent control

fill

public void fill(Menu parent,
                 int index)

Fills the given menu with controls representing this contribution item. Used by MenuManager.

Parameters:

parent - the parent menu

index - the index where the controls are inserted, or -1 to insert at the end

fill

public void fill(ToolBar parent,
                 int index)

Fills the given tool bar with controls representing this contribution item. Used by ToolBarManager.

Parameters:

parent - the parent tool bar

index - the index where the controls are inserted, or -1 to insert at the end

fill

public void fill(CoolBar parent,
                 int index)

Fills the given cool bar with controls representing this contribution item. Used by CoolBarManager.

Parameters:

parent - the parent cool bar

index - the index where the controls are inserted, or -1 to insert at the end

Since:

3.0

getId

public String getId()

Returns the identifier of this contribution item. The id is used for retrieving an item from its manager.

Returns:

the contribution item identifier, or null if none

isEnabled

public boolean isEnabled()

Returns whether this contribution item is enabled.

Returns:

true if this item is enabled

isDirty

public boolean isDirty()

Returns whether this contribution item is dirty. A dirty item will be recreated when the action bar is updated.

Returns:

true if this item is dirty

isDynamic

public boolean isDynamic()

Returns whether this contribution item is dynamic. A dynamic contribution item contributes items conditionally, dependent on some internal state.

Returns:

true if this item is dynamic, and false for normal items

isGroupMarker

public boolean isGroupMarker()

Returns whether this contribution item is a group marker. This information is used when adding items to a group.

Returns:

true if this item is a group marker, and false for normal items

See Also:

GroupMarker, IContributionManager.appendToGroup(java.lang.String, org.eclipse.jface.action.IAction), IContributionManager.prependToGroup(java.lang.String, org.eclipse.jface.action.IAction)

isSeparator

public boolean isSeparator()

Returns whether this contribution item is a separator. This information is used to enable hiding of unnecessary separators.

Returns:

true if this item is a separator, and false for normal items

See Also:

Separator

isVisible

public boolean isVisible()

Returns whether this contribution item is visibile within its manager.

Returns:

true if this item is visible, and false otherwise

saveWidgetState

public void saveWidgetState()

Saves any state information of the control(s) owned by this contribution item. The contribution manager calls this method before disposing of the controls.

Since:

3.0

setParent

public void setParent(IContributionManager parent)

Sets the parent manager of this item

Parameters:

parent - the parent contribution manager

Since:

2.0

setVisible

public void setVisible(boolean visible)

Sets whether this contribution item is visibile within its manager.

Parameters:

visible - true if this item should be visible, and false otherwise

update

public void update()

Updates any SWT controls cached by this contribution item with any changes which have been made to this contribution item since the last update. Called by contribution manager update methods.

update

public void update(String id)

Updates any SWT controls cached by this contribution item with changes for the the given property.

Parameters:

id - the id of the changed property

Since:

2.0