| /******************************************************************************* |
| * Copyright (c) 2021 Christian Pontesegger and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Christian Pontesegger - initial API and implementation |
| *******************************************************************************/ |
| |
| package org.eclipse.ease.ui.views.shell.dropins; |
| |
| import java.time.Duration; |
| |
| import org.eclipse.ease.IExecutionListener; |
| import org.eclipse.ease.IReplEngine; |
| import org.eclipse.ease.IScriptEngine; |
| import org.eclipse.ease.Script; |
| import org.eclipse.jface.util.Throttler; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Display; |
| import org.eclipse.ui.IWorkbenchPartSite; |
| |
| public abstract class AbstractDropin implements IShellDropin, IExecutionListener { |
| |
| private IReplEngine fEngine; |
| |
| private final Throttler fUiUpdater = new Throttler(Display.getDefault(), Duration.ofMillis(500), this::update); |
| |
| private boolean fIsActive = false; |
| |
| @Override |
| public void setScriptEngine(IReplEngine engine) { |
| if (fEngine != null) |
| fEngine.removeExecutionListener(this); |
| |
| fEngine = engine; |
| |
| if (fEngine != null) |
| fEngine.addExecutionListener(this); |
| } |
| |
| @Override |
| public Composite createPartControl(final IWorkbenchPartSite site, final Composite parent) { |
| final Composite composite = createComposite(site, parent); |
| |
| fIsActive = true; |
| |
| composite.addListener(SWT.Hide, event -> fIsActive = false); |
| composite.addListener(SWT.Show, event -> { |
| fIsActive = true; |
| update(); |
| }); |
| |
| return composite; |
| } |
| |
| @Override |
| public void notify(IScriptEngine engine, Script script, int status) { |
| switch (status) { |
| case IExecutionListener.SCRIPT_END: |
| fUiUpdater.throttledExec(); |
| break; |
| |
| case IExecutionListener.ENGINE_END: |
| engine.removeExecutionListener(this); |
| break; |
| |
| default: |
| // nothing to do |
| break; |
| } |
| } |
| |
| protected void update() { |
| if (fIsActive) |
| updateUI(); |
| } |
| |
| protected abstract void updateUI(); |
| |
| protected abstract Composite createComposite(IWorkbenchPartSite site, Composite parent); |
| } |