Examples of IWorkbenchPart

org.eclipse.ui.IWorkbenchPart
A workbench part is a visual component within a workbench page. There are two subtypes: view and editor, as defined by IViewPart and IEditorPart.
A view is typically used to navigate a hierarchy of information (like the workspace), open an editor, or display properties for the active editor. Modifications made in a view are saved immediately.
An editor is typically used to edit or browse a document or input object. The input is identified using an IEditorInput. Modifications made in an editor part follow an open-save-close lifecycle model.
This interface may be implemented directly. For convenience, a base implementation is defined in WorkbenchPart.
The lifecycle of a workbench part is as follows:
- When a part extension is created:
  - instantiate the part
  - create a part site
  - call part.init(site)
- When a part becomes visible in the workbench:
  - add part to presentation by calling part.createControl(parent) to create actual widgets
  - fire partOpened event to all listeners
- When a part is activated or gets focus:
  - call part.setFocus()
  - fire partActivated event to all listeners
- When a part is closed:
  - if save is needed, do save; if it fails or is canceled return
  - if part is active, deactivate part
  - fire partClosed event to all listeners
  - remove part from presentation; part controls are disposed as part of the SWT widget tree
  - call part.dispose()
After createPartControl has been called, the implementor may safely reference the controls created. When the part is closed these controls will be disposed as part of an SWT composite. This occurs before the IWorkbenchPart.dispose method is called. If there is a need to free SWT resources the part should define a dispose listener for its own control and free those resources from the dispose listener. If the part invokes any method on the disposed SWT controls after this point an SWTError will be thrown.

The last method called on IWorkbenchPart is dispose. This signals the end of the part lifecycle.

An important point to note about this lifecycle is that following a call to init, createControl may never be called. Thus in the dispose method, implementors must not assume controls were created.

Workbench parts implement the IAdaptable interface; extensions are managed by the platform's adapter manager.
@see IViewPart @see IEditorPart

Examples of org.eclipse.ui.IWorkbenchPart

    // TODO Auto-generated method stub
    if (enabledWhen == null) {
      enabledWhen = new Expression() {
        public EvaluationResult evaluate(IEvaluationContext context)
            throws CoreException {
          IWorkbenchPart part = InternalHandlerUtil
              .getActivePart(context);
          if (part != null) {
            PartPane pane = ((PartSite) part.getSite()).getPane();
            if ((pane instanceof ViewPane)
                && ((ViewPane) pane).hasViewMenu()) {
              return EvaluationResult.TRUE;
            }
          }

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Examples of org.eclipse.ui.IWorkbenchPart


        final MenuItem item = new MenuItem(parent, SWT.CHECK);
        item.setText(WorkbenchMessages.EditorPane_pinEditor);
        item.addSelectionListener(new SelectionAdapter() {
            public void widgetSelected(SelectionEvent e) {
                IWorkbenchPart part = getPartReference().getPart(true);
                if (part == null) {
                    // this should never happen
                    item.setSelection(false);
                    item.setEnabled(false);
                } else {

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Examples of org.eclipse.ui.IWorkbenchPart

    if (selectedItem != null) {
      if (selectedItem instanceof IEditorReference) {
        page.setEditorAreaVisible(true);
      }
      if (selectedItem instanceof IWorkbenchPartReference) {
        IWorkbenchPart part = ((IWorkbenchPartReference) selectedItem)
            .getPart(true);
        if (part != null) {
          page.activate(part);
        }
      }

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Examples of org.eclipse.ui.IWorkbenchPart


  /**
   * Initialize the slave services for this site.
   */
  private void initializeDefaultServices() {
    final IWorkbenchPart parentPart = parentSite.getPart();
    final Expression defaultExpression = new ActivePartExpression(
        parentPart);


    final IHandlerService parentService = (IHandlerService) parentSite
        .getService(IHandlerService.class);

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Examples of org.eclipse.ui.IWorkbenchPart

        } else {
            // @issue the following is resource-specific legacy code
            // Build the selection from the IFile of the editor
            Class resourceClass = LegacyResourceSupport.getResourceClass();
            if (resourceClass != null) {
                IWorkbenchPart part = workbenchWindow.getPartService()
                        .getActivePart();
                if (part instanceof IEditorPart) {
                    IEditorInput input = ((IEditorPart) part).getEditorInput();
                    Object resource = Util.getAdapter(input, resourceClass);
                    if (resource != null) {

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Examples of org.eclipse.ui.IWorkbenchPart

    public void dispose() {
        if (handler != null) {
            handler.removePropertyChangeListener(propertyChangeListener);
            handler = null;
        }
        IWorkbenchPart part = getActivePart();
        if (part != null) {
            IWorkbenchPartSite site = part.getSite();
            SubActionBars bars = (SubActionBars) ((PartSite) site).getActionBars();
            bars.removePropertyChangeListener(propertyChangeListener);
        }
    }

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Examples of org.eclipse.ui.IWorkbenchPart

     * A workbench part has been closed. 
     *
     * @param part the workbench part that has been closed
     */
    public void partClosed(IWorkbenchPart part) {
        IWorkbenchPart activePart = part.getSite().getPage().getActivePart();
        if (activePart != null) {
      // We are going to get a part activated message so don't bother setting the 
            // action handler to null. This prevents enablement flash in the toolbar
            return;
    }

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Examples of org.eclipse.ui.IWorkbenchPart

        super.partDeactivated(part);
        IWorkbenchPartSite site = part.getSite();
        SubActionBars bars = (SubActionBars) ((PartSite) site).getActionBars();
        bars.removePropertyChangeListener(propertyChangeListener);


        IWorkbenchPart activePart = part.getSite().getPage().getActivePart();
        if (activePart != null) {
      // We are going to get a part activated message so don't bother setting the 
            // action handler to null. This prevents enablement flash in the toolbar
            return;
    }

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Examples of org.eclipse.ui.IWorkbenchPart


    /*
     * @see AbstractPartSelectionTracker#getSelection()
     */
    public ISelection getSelection() {
        IWorkbenchPart part = getPart();
        if (part != null) {
            ISelectionProvider sp = part.getSite().getSelectionProvider();
            if (sp != null) {
                return sp.getSelection();
            }
        }
        return null;

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Examples of org.eclipse.ui.IWorkbenchPart


    /**
     * @see AbstractDebugSelectionProvider#getSelectionProvider()
     */
    protected ISelectionProvider getSelectionProvider() {
        IWorkbenchPart part = getPart();
        if (part != null) {
            return part.getSite().getSelectionProvider();
        }
        return null;
    }

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