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Java Source Code / Java Documentation » IDE Eclipse » ui workbench » org.eclipse.ui.actions

Source Cross Reference Class Diagram Java Document (Java Doc)

org.eclipse.ui.actions .SelectionProviderAction

All known Subclasses:   org.eclipse.ui.dialogs .PropertyDialogAction,
SelectionProviderAction
abstract public class SelectionProviderAction extends Action implements ISelectionChangedListener(Code)
The abstract superclass for actions that listen to selection changes from a particular selection provider. This implementation splits the current selection along structured/unstructured lines, providing a convenient place to monitor selection changes that require adjusting action state.
Subclasses must implement the following IAction method:

run - to do the action's work

Subclasses may reimplement either of the following methods:

selectionChanged(IStructuredSelection)

selectionChanged(ISelection)

Constructor Summary
protected SelectionProviderAction(ISelectionProvider provider, String text)
     Creates a new action with the given text that monitors selection changes within the given selection provider.

Method Summary
public void dispose()
     Disposes this action by removing it as a listener from the selection provider.
public ISelection getSelection()
     Returns the current selection in the selection provider.
public ISelectionProvider getSelectionProvider()
     Returns the selection provider that is the target of this action.
public IStructuredSelection getStructuredSelection()
     Returns the current structured selection in the selection provider, or an empty selection if nothing is selected or if selection does not include objects (for example, raw text).
public void selectionChanged(ISelection selection)
     Notifies this action that the given (non-structured) selection has changed in the selection provider.
The SelectionProviderAction implementation of this method does nothing.
public void selectionChanged(IStructuredSelection selection)
     Notifies this action that the given structured selection has changed in the selection provider.
The SelectionProviderAction implementation of this method does nothing.
final public void selectionChanged(SelectionChangedEvent event)
     The SelectionProviderAction implementation of this ISelectionChangedListener method calls selectionChanged(IStructuredSelection) if the selection is a structured selection but selectionChanged(ISelection) if it is not.

Constructor Detail
SelectionProviderAction
protected SelectionProviderAction(ISelectionProvider provider, String text)(Code)
Creates a new action with the given text that monitors selection changes within the given selection provider. The resulting action is added as a listener on the selection provider.
Parameters:
  provider - the selection provider that will provide selection notification
Parameters:
  text - the string used as the text for the action, or null if there is no text

Method Detail
dispose
public void dispose()(Code)
Disposes this action by removing it as a listener from the selection provider. This must be called by the creator of the action when the action is no longer needed.

getSelection
public ISelection getSelection()(Code)
Returns the current selection in the selection provider. the current selection in the selection provider

getSelectionProvider
public ISelectionProvider getSelectionProvider()(Code)
Returns the selection provider that is the target of this action. the target selection provider of this action

getStructuredSelection
public IStructuredSelection getStructuredSelection()(Code)
Returns the current structured selection in the selection provider, or an empty selection if nothing is selected or if selection does not include objects (for example, raw text). the current structured selection in the selection provider

selectionChanged
public void selectionChanged(ISelection selection)(Code)
Notifies this action that the given (non-structured) selection has changed in the selection provider.
The SelectionProviderAction implementation of this method does nothing. Subclasses may reimplement to react to this selection change.

Parameters:
  selection - the new selection

selectionChanged
public void selectionChanged(IStructuredSelection selection)(Code)
Notifies this action that the given structured selection has changed in the selection provider.
The SelectionProviderAction implementation of this method does nothing. Subclasses may reimplement to react to this selection change.

Parameters:
  selection - the new selection

selectionChanged
final public void selectionChanged(SelectionChangedEvent event)(Code)
The SelectionProviderAction implementation of this ISelectionChangedListener method calls selectionChanged(IStructuredSelection) if the selection is a structured selection but selectionChanged(ISelection) if it is not. Subclasses should override either of those methods method to react to selection changes.

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