| /******************************************************************************* |
| * Copyright (c) 2010, 2015 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Lars Vogel <Lars.Vogel@vogella.com> - Bug 474274 |
| ******************************************************************************/ |
| package org.eclipse.e4.core.internal.tests.contexts.inject; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertNull; |
| |
| import javax.inject.Inject; |
| import javax.inject.Named; |
| |
| import org.eclipse.e4.core.contexts.ContextFunction; |
| import org.eclipse.e4.core.contexts.ContextInjectionFactory; |
| import org.eclipse.e4.core.contexts.EclipseContextFactory; |
| import org.eclipse.e4.core.contexts.IEclipseContext; |
| import org.eclipse.e4.core.di.annotations.Optional; |
| import org.junit.Test; |
| |
| public class ContextFunctionDynamicsTest { |
| |
| private static final String SELECTION = "selection"; //$NON-NLS-1$ |
| |
| static class InjectTarget { |
| Object input; |
| |
| @Inject |
| @Optional |
| void setInput(@Named(SELECTION) Object input) { |
| this.input = input; |
| } |
| } |
| |
| /** |
| * Changing context function should update injected values |
| */ |
| @Test |
| public void testChangeICF() { |
| IEclipseContext context1 = EclipseContextFactory.create("context1"); |
| IEclipseContext context2 = context1.createChild("context2"); |
| |
| context1.set(SELECTION, new ContextFunction() { |
| @Override |
| public Object compute(IEclipseContext context, String contextKey) { |
| return "func1"; |
| } |
| }); |
| |
| InjectTarget target = new InjectTarget(); |
| ContextInjectionFactory.inject(target, context2); |
| |
| assertEquals("func1", target.input); |
| |
| context1.set(SELECTION, new ContextFunction() { |
| @Override |
| public Object compute(IEclipseContext context, String contextKey) { |
| return "func2"; |
| } |
| }); |
| |
| assertEquals("func2", target.input); |
| } |
| |
| /** |
| * Overriding context function with a regular value on a child node |
| */ |
| @Test |
| public void testOverrideICF() { |
| IEclipseContext context1 = EclipseContextFactory.create("context1"); |
| IEclipseContext context2 = context1.createChild("context2"); |
| IEclipseContext context3 = context2.createChild("context3"); |
| |
| context1.set(SELECTION, new ContextFunction() { |
| @Override |
| public Object compute(IEclipseContext context, String contextKey) { |
| return "func1"; |
| } |
| }); |
| |
| InjectTarget target = new InjectTarget(); |
| ContextInjectionFactory.inject(target, context3); |
| |
| assertEquals("func1", target.input); |
| |
| Object o = new Object(); |
| context2.set(SELECTION, o); |
| |
| assertEquals(o, target.input); |
| } |
| |
| /** |
| * Tests updates in a chain of 4 contexts |
| */ |
| @Test |
| public void testLongChain() { |
| IEclipseContext context1 = EclipseContextFactory.create("context1"); |
| IEclipseContext context2 = context1.createChild("context2"); |
| IEclipseContext context3 = context2.createChild("context3"); |
| IEclipseContext context4 = context3.createChild("context4"); |
| |
| // ICF set on top context |
| context1.set(SELECTION, new ContextFunction() { |
| @Override |
| public Object compute(IEclipseContext context, String contextKey) { |
| return "func1"; |
| } |
| }); |
| |
| InjectTarget target = new InjectTarget(); |
| ContextInjectionFactory.inject(target, context4); |
| |
| assertEquals("func1", target.input); |
| |
| // Override ICF set on the 2nd context |
| context2.set(SELECTION, new ContextFunction() { |
| @Override |
| public Object compute(IEclipseContext context, String contextKey) { |
| return "func2"; |
| } |
| }); |
| |
| assertEquals("func2", target.input); |
| |
| // Override removed |
| context2.remove(SELECTION); |
| assertEquals("func1", target.input); |
| |
| // Override simple value set on 3rd context |
| context3.set(SELECTION, "abc"); |
| assertEquals("abc", target.input); |
| |
| // Simple value override removed from 3rd context |
| context3.remove(SELECTION); |
| assertEquals("func1", target.input); |
| } |
| |
| |
| |
| @Test |
| public void testBug315109() throws Exception { |
| IEclipseContext appContext = EclipseContextFactory.create(); |
| IEclipseContext windowContext = appContext.createChild(); |
| IEclipseContext partContext = windowContext.createChild(); |
| |
| partContext.activateBranch(); |
| |
| appContext.set(SELECTION, new ContextFunction() { |
| @Override |
| public Object compute(IEclipseContext context, String contextKey) { |
| IEclipseContext parent = context.getParent(); |
| while (parent != null) { |
| context = parent; |
| parent = context.getParent(); |
| } |
| return context.getActiveLeaf().get("out.selection"); |
| } |
| }); |
| |
| InjectTarget target = new InjectTarget(); |
| ContextInjectionFactory.inject(target, partContext); |
| |
| assertNull("No selection has been set, should be null", target.input); //$NON-NLS-1$ |
| |
| Object o = new Object(); |
| windowContext.set(SELECTION, o); |
| |
| assertEquals( |
| "A selection was set into the window, should have been injected into the part", //$NON-NLS-1$ |
| o, target.input); |
| } |
| } |