State Machine refactoring

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-over/trunk@23 174cde9d-5d70-4d2a-aa98-46368bc2aaf7

1 files changed, 318 insertions, 0 deletions

diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/MainWindow.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/MainWindow.java
new file mode 100644
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+/*
+ * Copyright 2012 by A-SIT, Secure Information Technology Center Austria
+ *
+ * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by
+ * the European Commission - subsequent versions of the EUPL (the "Licence");
+ * You may not use this work except in compliance with the Licence.
+ * You may obtain a copy of the Licence at:
+ * http://joinup.ec.europa.eu/software/page/eupl
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the Licence is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the Licence for the specific language governing permissions and
+ * limitations under the Licence.
+ */
+package at.asit.pdfover.gui;
+
+// Imports
+import java.util.EnumMap;
+import java.util.Map;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.custom.CLabel;
+import org.eclipse.swt.custom.StackLayout;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.layout.FormAttachment;
+import org.eclipse.swt.layout.FormData;
+import org.eclipse.swt.layout.FormLayout;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.Control;
+import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Shell;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import at.asit.pdfover.gui.composites.StateComposite;
+import at.asit.pdfover.gui.workflow.StateMachine;
+import at.asit.pdfover.gui.workflow.states.OpenState;
+import at.asit.pdfover.gui.workflow.states.PositioningState;
+
+/**
+ * The Main Window of PDFOver 4.0
+ */
+public class MainWindow {
+
+	/**
+	 * Selection Listener for Position Button
+	 */
+	private final class PositionSelectionListener implements SelectionListener {
+		/**
+		 * Default constructor
+		 */
+		public PositionSelectionListener() {
+			// Nothing to do here
+		}
+
+		@Override
+		public void widgetSelected(SelectionEvent e) {
+			MainWindow.this.stateMachine.jumpToState(new PositioningState(
+					MainWindow.this.stateMachine));
+		}
+
+		@Override
+		public void widgetDefaultSelected(SelectionEvent e) {
+			// Nothing to do here
+		}
+	}
+
+	/**
+	 * Selection Listener for Open Button
+	 */
+	private final class DataSourceSelectionListener implements
+			SelectionListener {
+		/**
+		 * Default constructor
+		 */
+		public DataSourceSelectionListener() {
+			// Nothing to do here
+		}
+
+		@Override
+		public void widgetSelected(SelectionEvent e) {
+			MainWindow.this.stateMachine
+					.jumpToState(new OpenState(
+							MainWindow.this.stateMachine));
+		}
+
+		@Override
+		public void widgetDefaultSelected(SelectionEvent e) {
+			// Nothing to do here
+		}
+	}
+
+	/**
+	 * SFL4J Logger instance
+	 **/
+	static final Logger log = LoggerFactory.getLogger(MainWindow.class);
+
+	private Shell shell;
+	private CLabel lbl_status;
+	private Composite container;
+	private StackLayout stack;
+	StateMachine stateMachine;
+	private Button btn_sign;
+	private Button btn_position;
+	private Button btn_open;
+	private Button btn_config;
+
+	public enum Buttons {
+		CONFIG, OPEN, POSITION, SIGN, FINAL
+	}
+
+	private Map<Buttons, Button> buttonMap;
+
+	/**
+	 * Default constructor
+	 * 
+	 * @param stateMachine
+	 *            The main workflow
+	 */
+	public MainWindow(StateMachine stateMachine) {
+		super();
+
+		this.stateMachine = stateMachine;
+
+		this.buttonMap = new EnumMap<MainWindow.Buttons, Button>(Buttons.class);
+	}
+
+	/**
+	 * Set current status (may be removed in production release)
+	 * 
+	 * @param value
+	 */
+	public void setStatus(String value) {
+		if (this.getShell().isDisposed()) {
+			return;
+		}
+		this.lbl_status.setText("[DEBUG]: Current workflow state: " + value);
+	}
+
+	/**
+	 * Sets top level composite for stack layout
+	 * 
+	 * @param ctrl
+	 */
+	public void setTopControl(Control ctrl) {
+		log.debug("Top control: " + ctrl.toString());
+		this.stack.topControl = ctrl;
+		this.doLayout();
+	}
+
+	/**
+	 * Layout the Main Window
+	 */
+	public void doLayout() {
+		Control ctrl = this.stack.topControl;
+		this.container.layout(true, true);
+		this.shell.layout(true, true);
+		// Note: SWT only layouts children! No grandchildren!
+		if (ctrl instanceof StateComposite) {
+			((StateComposite) ctrl).doLayout();
+		}
+	}
+
+	/**
+	 * Gets the container composite
+	 * 
+	 * @return the container composite
+	 */
+	public Composite getContainer() {
+		return this.container;
+	}
+
+	/**
+	 * Entrance point for swt designer
+	 * 
+	 * @param args
+	 */
+	public static void main(String[] args) {
+		Display display = Display.getDefault();
+
+		MainWindow window = new MainWindow(null);
+
+		window.open();
+
+		window.getShell().open();
+		window.getShell().layout();
+		while (!window.getShell().isDisposed()) {
+			if (!display.readAndDispatch()) {
+				display.sleep();
+			}
+		}
+	}
+
+	/**
+	 * Open the window.
+	 * 
+	 * @wbp.parser.entryPoint
+	 */
+	public void open() {
+		createContents();
+	}
+
+	/**
+	 * Create contents of the window.
+	 */
+	protected void createContents() {
+		this.shell = new Shell();
+		getShell().setSize(450, 329);
+		getShell().setText("PDF-Over");
+
+		getShell().setLayout(new FormLayout());
+
+		Composite composite = new Composite(getShell(), SWT.NONE);
+		FormData fd_composite = new FormData();
+		fd_composite.left = new FormAttachment(0, 5);
+		fd_composite.right = new FormAttachment(100, -5);
+		fd_composite.top = new FormAttachment(0, 5);
+		fd_composite.bottom = new FormAttachment(0, 40);
+		composite.setLayoutData(fd_composite);
+		composite.setLayout(new FormLayout());
+
+		this.btn_config = new Button(composite, SWT.NONE);
+		FormData fd_config = new FormData();
+		fd_config.left = new FormAttachment(0, 0);
+		fd_config.right = new FormAttachment(25, 0);
+		fd_config.top = new FormAttachment(0, 0);
+		fd_config.bottom = new FormAttachment(100, 0);
+		this.btn_config.setLayoutData(fd_config);
+		this.btn_config.setText("Config ...");
+		buttonMap.put(Buttons.CONFIG, btn_config);
+
+		this.btn_open = new Button(composite, SWT.NONE);
+		FormData fd_open = new FormData();
+		fd_open.left = new FormAttachment(25, 0);
+		fd_open.right = new FormAttachment(50, 0);
+		fd_open.top = new FormAttachment(0, 0);
+		fd_open.bottom = new FormAttachment(100, 0);
+		this.btn_open.setLayoutData(fd_open);
+		this.btn_open.setText("Open ...");
+		this.btn_open.addSelectionListener(new DataSourceSelectionListener());
+		buttonMap.put(Buttons.OPEN, btn_open);
+
+		this.btn_position = new Button(composite, SWT.NONE);
+		FormData fd_position = new FormData();
+		fd_position.left = new FormAttachment(50, 0);
+		fd_position.right = new FormAttachment(75, 0);
+		fd_position.top = new FormAttachment(0, 0);
+		fd_position.bottom = new FormAttachment(100, 0);
+		this.btn_position.setLayoutData(fd_position);
+		this.btn_position.setText("Positon ...");
+		this.btn_position.addSelectionListener(new PositionSelectionListener());
+		buttonMap.put(Buttons.POSITION, btn_position);
+
+		this.btn_sign = new Button(composite, SWT.NONE);
+		FormData fd_sign = new FormData();
+		fd_sign.left = new FormAttachment(75, 0);
+		fd_sign.right = new FormAttachment(100, 0);
+		fd_sign.top = new FormAttachment(0, 0);
+		fd_sign.bottom = new FormAttachment(100, 0);
+		this.btn_sign.setLayoutData(fd_sign);
+		this.btn_sign.setText("Sign ...");
+		buttonMap.put(Buttons.SIGN, btn_sign);
+
+		this.container = new Composite(getShell(), SWT.BORDER | SWT.RESIZE);
+		FormData fd_composite_1 = new FormData();
+		fd_composite_1.bottom = new FormAttachment(100, -25);
+		fd_composite_1.right = new FormAttachment(100, -5);
+		fd_composite_1.top = new FormAttachment(0, 45);
+		fd_composite_1.left = new FormAttachment(0, 5);
+		this.container.setLayoutData(fd_composite_1);
+		this.stack = new StackLayout();
+		this.container.setLayout(this.stack);
+
+		this.lbl_status = new CLabel(getShell(), SWT.NONE);
+		FormData fd_lblNewLabel = new FormData();
+		fd_lblNewLabel.right = new FormAttachment(100, -5);
+		fd_lblNewLabel.bottom = new FormAttachment(100, -5);
+		fd_lblNewLabel.top = new FormAttachment(100, -20);
+		fd_lblNewLabel.left = new FormAttachment(0, 5);
+		this.lbl_status.setLayoutData(fd_lblNewLabel);
+		this.lbl_status.setText("New Label");
+
+	}
+
+	/**
+	 * Update MainWindow to fit new status
+	 */
+	public void applyBehavior() {
+		MainWindowBehavior behavior = this.stateMachine.getStatus()
+				.getBehavior();
+
+		log.debug("Updating MainWindow state for : "
+				+ this.stateMachine.getStatus().getCurrentState().toString());
+
+		for (Buttons button : Buttons.values()) {
+			boolean active = behavior.getActive(button);
+			boolean enabled = behavior.getEnabled(button);
+
+			Button theButton = buttonMap.get(button);
+			if (theButton != null)
+			{
+				theButton.setEnabled(enabled);
+			}
+		}
+
+		//TODO: Display/Hide main bar
+	}
+
+	/**
+	 * @return the shell
+	 */
+	public Shell getShell() {
+		return this.shell;
+	}
+}