- * Usage: - * 1) instantiate - * 2) call {@link #setAndFireSelection(ISelection)} to send a selection event - * - *
- * Contains an empty StructuredSelection by default. - *
- * - * @author Toni Kalajainen - */ -public class BasePostSelectionProvider implements IPostSelectionProvider { - - protected ListenerList selectionListeners = new ListenerList(); - - protected ListenerList postSelectionListeners = new ListenerList(); - - protected ISelection selection = StructuredSelection.EMPTY; - - public void addSelectionChangedListener(ISelectionChangedListener listener) { - selectionListeners.add(listener); - } - - public ISelection getSelection() { - return selection; - } - - public void clearListeners() { - selectionListeners.clear(); - postSelectionListeners.clear(); - } - - public void clearSelectionChangedListeners() { - postSelectionListeners.clear(); - } - - public void clearPostSelectionChangedListeners() { - postSelectionListeners.clear(); - } - - public void removeSelectionChangedListener(ISelectionChangedListener listener) { - selectionListeners.remove(listener); - } - - @Override - public void addPostSelectionChangedListener(ISelectionChangedListener listener) { - postSelectionListeners.add(listener); - } - - @Override - public void removePostSelectionChangedListener(ISelectionChangedListener listener) { - postSelectionListeners.remove(listener); - } - - public void setSelection(ISelection selection) { - setSelectionWithoutFiring(selection); - } - - protected Object[] getListeners() { - return selectionListeners.getListeners(); - } - - protected Object[] getPostListeners() { - return postSelectionListeners.getListeners(); - } - - /** - * Notify other UIs that selection has changed - * @param selection new selection - */ - public void fireSelection(ISelection selection) { - if (selection == null) - return; - SelectionChangedEvent e = new SelectionChangedEvent(this, selection); - for (Object l : getListeners()) - ((ISelectionChangedListener) l).selectionChanged(e); - } - - /** - * Notify other UIs that selection has changed - * @param selection new selection - */ - public void firePostSelection(ISelection selection) { - if (selection == null) - return; - final SelectionChangedEvent e = new SelectionChangedEvent(this, selection); - for (Object o : postSelectionListeners.getListeners()) { - final ISelectionChangedListener l = (ISelectionChangedListener) o; - SafeRunner.run(new SafeRunnable() { - @Override - public void run() throws Exception { - l.selectionChanged(e); - } - }); - } - } - - public void setSelectionWithoutFiring(ISelection selection) { - this.selection = selection; - } - - - /** - * Sets a new selection and always fires a SelectionChangedEvent about it. - * - * @param selection the new selection - */ - public void setAndFireSelection(ISelection selection) { - setSelection(selection); - fireSelection(selection); - } - - /** - * Sets the new selection for this provider and fires all selection change - * listeners if the specified selection differs from the current selection. - * If the selection is either the same object or considered equal to the - * current selection, the listeners are not fired. - * - * @param selection the new selection - */ - public void setAndFireNonEqualSelection(ISelection selection) { - ISelection old = getSelection(); - if (ObjectUtils.objectEquals(old, selection)) - return; - - this.selection = selection; - if (selection != null && !selection.equals(old)) - fireSelection(selection); - } - - public boolean selectionEquals(ISelection s) { - if (s == selection) - return true; - if (s == null) - // Old selection had to be non-null - return true; - return s.equals(selection); - } - -} +/******************************************************************************* + * Copyright (c) 2007, 2018 Association for Decentralized Information Management + * in Industry THTH ry. + * All rights reserved. This program and the accompanying materials + * are made available under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution, and is available at + * http://www.eclipse.org/legal/epl-v10.html + * + * Contributors: + * VTT Technical Research Centre of Finland - initial API and implementation + *******************************************************************************/ +/* + * 23.8.2006 + */ +package org.simantics.utils.ui.jface; + +import org.eclipse.core.runtime.ListenerList; +import org.eclipse.core.runtime.SafeRunner; +import org.eclipse.jface.util.SafeRunnable; +import org.eclipse.jface.viewers.IPostSelectionProvider; +import org.eclipse.jface.viewers.ISelection; +import org.eclipse.jface.viewers.ISelectionChangedListener; +import org.eclipse.jface.viewers.SelectionChangedEvent; + +/** + * BaseSelectionProvider is a base implementation ISelectionProvider -interface. + *+ * Usage: + * 1) instantiate + * 2) call {@link #setAndFireSelection(ISelection)} to send a selection event + * + *
+ * Contains an empty StructuredSelection by default. + *
+ * + * @author Toni Kalajainen + * @author Tuukka Lehtonen + */ +public class BasePostSelectionProvider extends BaseSelectionProvider implements IPostSelectionProvider { + + protected ListenerList