Java tutorial
/** * Warlock, the open-source cross-platform game client * * Copyright 2008, Warlock LLC, and individual contributors as indicated * by the @authors tag. * * This is free software; you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as * published by the Free Software Foundation; either version 2.1 of * the License, or (at your option) any later version. * * This software is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this software; if not, write to the Free * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA, or see the FSF site: http://www.fsf.org. */ package cc.warlock.scribe.ui.views; import java.util.ArrayList; import java.util.Timer; import java.util.TimerTask; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.ToolBar; import org.eclipse.swt.widgets.ToolItem; import org.eclipse.ui.part.ViewPart; import cc.warlock.core.client.IWarlockClient; import cc.warlock.core.client.IWarlockClientConnectListener; import cc.warlock.core.client.WarlockClientRegistry; import cc.warlock.core.script.IScript; import cc.warlock.core.script.IScriptListener; import cc.warlock.rcp.ui.client.SWTScriptListener; import cc.warlock.rcp.ui.client.SWTWarlockClientConnectListener; import cc.warlock.scribe.ui.ScribeSharedImages; public class ScriptControlView extends ViewPart implements IScriptListener { protected ArrayList<IWarlockClient> clients = new ArrayList<IWarlockClient>(); protected SWTScriptListener wrapper = new SWTScriptListener(this); protected Composite main, scriptComposite; protected ToolBar buttonsToolbar; protected ToolItem pause, stop; protected Label scriptNameLabel, durationLabel; protected int duration = 0; protected IScript currentScript; protected void listenToClient(IWarlockClient client) { if (!clients.contains(client)) { client.addScriptListener(wrapper); clients.add(client); } } protected void updateCurrentClient() { for (IWarlockClient client : WarlockClientRegistry.getActiveClients()) { listenToClient(client); } WarlockClientRegistry .addWarlockClientListener(new SWTWarlockClientConnectListener(new IWarlockClientConnectListener() { @Override public void clientConnected(IWarlockClient client) { listenToClient(client); } @Override public void clientDisconnected(IWarlockClient client) { } @Override public void clientSettingsLoaded(IWarlockClient client) { } })); } @Override public void createPartControl(Composite parent) { updateCurrentClient(); main = new Composite(parent, SWT.NONE); GridLayout mainLayout = new GridLayout(2, false); mainLayout.marginHeight = mainLayout.marginWidth = 0; main.setLayout(mainLayout); main.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true)); Label label = new Label(main, SWT.NONE); label.setText("Running Scripts"); label.setFont(JFaceResources.getBannerFont()); } public void setFocus() { } public void scriptPaused(IScript script) { if (script == currentScript) { pausePressed(); } } public void scriptResumed(IScript script) { if (script == currentScript) { resumePressed(); } } public void scriptStopped(IScript script, boolean userStopped) { if (script == currentScript) { stopPressed(); } } public void scriptStarted(IScript script) { duration = 0; currentScript = script; updateScriptComposite(scriptComposite == null); } private void updateDuration() { duration++; int hours = (int) Math.floor(((double) duration) / 3600.0); int minutes = (int) Math.floor(((double) duration) / 60.0) % 60; int seconds = duration - (minutes * 60) - (hours * 3600); String label = "" + seconds + "s"; if (minutes > 0) label = "" + minutes + "m " + label; if (hours > 0) label = "" + hours + "h " + label; final String finalLabel = label; Display.getDefault().syncExec(new Runnable() { public void run() { durationLabel.setText("running: " + finalLabel); } }); } private void resetControls() { scriptNameLabel.setText("[" + currentScript.getName() + "]"); pause.setImage(ScribeSharedImages.getImage(ScribeSharedImages.IMG_SUSPEND)); pause.setText("Pause"); stop.setImage(ScribeSharedImages.getImage(ScribeSharedImages.IMG_TERMINATE)); stop.setText("Stop"); pause.setEnabled(true); stop.setEnabled(true); durationLabel.setEnabled(true); durationLabel.setText("running: 00h 00m 00s"); final Timer timer = new Timer(); timer.schedule(new TimerTask() { public void run() { if (currentScript.isRunning()) { updateDuration(); } else timer.cancel(); } }, 1000, 1000); } protected void stopPressed() { stop.setEnabled(false); pause.setEnabled(false); durationLabel.setText("finished"); durationLabel.setEnabled(false); } protected void pausePressed() { pause.setImage(ScribeSharedImages.getImage(ScribeSharedImages.IMG_RESUME)); pause.setText("Resume"); } protected void resumePressed() { pause.setImage(ScribeSharedImages.getImage(ScribeSharedImages.IMG_SUSPEND)); pause.setText("Pause"); } private void updateScriptComposite(boolean create) { if (create) { scriptComposite = new Composite(main, SWT.NONE); GridLayout scriptLayout = new GridLayout(3, false); scriptLayout.marginHeight = scriptLayout.marginWidth = 0; scriptComposite.setLayout(scriptLayout); scriptComposite.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, true)); scriptNameLabel = new Label(scriptComposite, SWT.NONE); scriptNameLabel.setFont(JFaceResources.getDialogFont()); buttonsToolbar = new ToolBar(scriptComposite, SWT.RIGHT | SWT.FLAT); pause = new ToolItem(buttonsToolbar, SWT.PUSH); stop = new ToolItem(buttonsToolbar, SWT.PUSH); durationLabel = new Label(scriptComposite, SWT.NONE); pause.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { if (pause.getImage().equals(ScribeSharedImages.getImage(ScribeSharedImages.IMG_RESUME))) { resumePressed(); currentScript.resume(); } else { pausePressed(); currentScript.suspend(); } } }); stop.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { currentScript.stop(); stopPressed(); } }); } resetControls(); if (create) main.layout(); } }