Question

I have an Eclipse plugin in which I need a toolbar within the text editor as like the toggle breadcrumb view. Is there any generic utility class in Eclipse that allows me to do this?

@Override
protected ISourceViewer createSourceViewer(Composite parent,
                                           IVerticalRuler ruler, 
                                           int styles)
{
    composite = new Composite(parent, SWT.NONE);
    GridLayout gridLayout = new GridLayout(1, true);
    gridLayout.numColumns = 1;
    gridLayout.marginHeight = 0;
    gridLayout.marginWidth = 0;
    composite.setLayout(gridLayout);

    ToolBar toolBar = new ToolBar(composite, SWT.FLAT);
    GridData gridData = new GridData(GridData.FILL, SWT.TOP, true, false);
    toolBar.setLayoutData(gridData);
    toolBarManager = new ToolBarManager(toolBar);

    return super.createSourceViewer(composite, ruler, styles);
}

Answer 1

Assuming you have an text editor based on the org.eclipse.ui.editors.text.TextEditor class, then you must override AbstractDecoratedTextEditor.createSourceViewer(Composite parent, ...). Basically

• Create new top Composite in parent with a GridLayout(1, false). (This is needed as the Composite in the parent argument have a FillLayout).
• Create a ToolBarManager and do ‘mng.createControl(top)’ with GridData(FILL, TOP, true, false).
• Create new child Composite in top of with GridData(FILL, FILL, true, true).
• Invoke super.createSourceViewer(child, ...).