ConfigEditorContributor.java

package com.arm.cmsis.config.editors;

import org.eclipse.jface.action.IAction;
import org.eclipse.ui.IActionBars;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.actions.ActionFactory;
import org.eclipse.ui.ide.IDEActionFactory;
import org.eclipse.ui.part.MultiPageEditorActionBarContributor;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.ITextEditorActionConstants;

/**
 * Manages the installation/deinstallation of global actions for multi-page editors.
 * Responsible for the redirection of global actions to the active editor.
 * Multi-page contributor replaces the contributors for the individual editors in the multi-page editor.
 */
public class ConfigEditorContributor extends MultiPageEditorActionBarContributor {
	private IEditorPart activeEditorPart;
	/**
	 * Creates a multi-page contributor.
	 */
	public ConfigEditorContributor() {
		super();
	}
	/**
	 * Returns the action registed with the given text editor.
	 * @return IAction or null if editor is null.
	 */
	protected IAction getAction(ITextEditor editor, String actionID) {
		return (editor == null ? null : editor.getAction(actionID));
	}
	/* (non-JavaDoc)
	 * Method declared in AbstractMultiPageEditorActionBarContributor.
	 */

	@Override
	public void setActivePage(IEditorPart part) {
		if (activeEditorPart == part) {
			return;
		}

		activeEditorPart = part;

		IActionBars actionBars = getActionBars();
		if (actionBars != null) {

			ITextEditor editor = (part instanceof ITextEditor) ? (ITextEditor) part : null;

			actionBars.setGlobalActionHandler(
				ActionFactory.DELETE.getId(),
				getAction(editor, ITextEditorActionConstants.DELETE));
			actionBars.setGlobalActionHandler(
				ActionFactory.UNDO.getId(),
				getAction(editor, ITextEditorActionConstants.UNDO));
			actionBars.setGlobalActionHandler(
				ActionFactory.REDO.getId(),
				getAction(editor, ITextEditorActionConstants.REDO));
			actionBars.setGlobalActionHandler(
				ActionFactory.CUT.getId(),
				getAction(editor, ITextEditorActionConstants.CUT));
			actionBars.setGlobalActionHandler(
				ActionFactory.COPY.getId(),
				getAction(editor, ITextEditorActionConstants.COPY));
			actionBars.setGlobalActionHandler(
				ActionFactory.PASTE.getId(),
				getAction(editor, ITextEditorActionConstants.PASTE));
			actionBars.setGlobalActionHandler(
				ActionFactory.SELECT_ALL.getId(),
				getAction(editor, ITextEditorActionConstants.SELECT_ALL));
			actionBars.setGlobalActionHandler(
				ActionFactory.FIND.getId(),
				getAction(editor, ITextEditorActionConstants.FIND));
			actionBars.setGlobalActionHandler(
				IDEActionFactory.BOOKMARK.getId(),
				getAction(editor, IDEActionFactory.BOOKMARK.getId()));
			actionBars.updateActionBars();
		}
	}
}