visualization/plugins/org.eclipse.pde.visualization.dependency/src/org/eclipse/pde/internal/visualization/dependency/views/VisualizationForm.java - pde/eclipse.pde.incubator - Git at Google

 /*******************************************************************************
  * Copyright 2005, 2012 CHISEL Group, University of Victoria, Victoria, BC,
  * Canada. 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: The Chisel Group, University of Victoria IBM CAS, IBM Toronto
  * Lab
  ******************************************************************************/
 package org.eclipse.pde.internal.visualization.dependency.views;

 import java.io.PrintWriter;
 import java.io.StringWriter;

 import org.eclipse.jface.dialogs.IMessageProvider;
 import org.eclipse.pde.internal.visualization.dependency.PDEVizImages;
 import org.eclipse.pde.internal.visualization.dependency.analysis.ErrorReporting;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.SashForm;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.layout.FillLayout;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 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.Group;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Link;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.eclipse.swt.widgets.ToolBar;
 import org.eclipse.swt.widgets.ToolItem;
 import org.eclipse.ui.ISharedImages;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.forms.IMessage;
 import org.eclipse.ui.forms.ManagedForm;
 import org.eclipse.ui.forms.events.HyperlinkAdapter;
 import org.eclipse.ui.forms.events.HyperlinkEvent;
 import org.eclipse.ui.forms.widgets.Form;
 import org.eclipse.ui.forms.widgets.FormText;
 import org.eclipse.ui.forms.widgets.FormToolkit;
 import org.eclipse.ui.forms.widgets.ScrolledForm;
 import org.eclipse.ui.forms.widgets.Section;
 import org.eclipse.ui.forms.widgets.TableWrapData;
 import org.eclipse.ui.forms.widgets.TableWrapLayout;
 import org.eclipse.zest.core.viewers.GraphViewer;
 import org.eclipse.zest.core.widgets.Graph;

 /**
  * This class encapsulates the process of creating the form view in the PDE
  * visualization tool.
  */
 /* package */class VisualizationForm {

 	private static final String SymbolicName_Match_Pattern = "Bundle Name Match Regexp";
 	private static final String SymbolicName_Exclude_Pattern = "Bundle Name Exclude Regexp";
 	private static final String Hide_Fragments = "Hide Fragments";
 	/*
 	 * These are all the strings used in the form. These can probably be
 	 * abstracted for internationalization
 	 */
 	private static String Plugin_Dependency_Analysis = "Plug-in Dependency Analysis";
 	private static String Controls = "Options";
 	private static String Show_Dependency_Path = "Show Dependency Path";
 	private static String Version_Number = "Show Bundle Version Numbers";

 	/*
 	 * These are strings and used to determine which radio button is selected
 	 */
 	public static String Show_All_Paths = "Show All Paths";
 	public static String Show_Smart_Path = "Show Smart Path";
 	public static String Show_Shortest_Path = "Show Shortest Path";

 	/*
 	 * Some parts of the form we may need access to
 	 */
 	private ScrolledForm form;
 	private FormToolkit toolkit;
 	private ManagedForm managedForm;
 	private GraphViewer viewer;
 	private PluginVisualizationView view;

 	/*
 	 * Some buttons that we need to access in local methods
 	 */
 	private Button showSmartPath = null;
 	private Button showShortestPath = null;
 	private Button showAllPaths = null;
 	private Button dependencyAnalysis = null;
 	private Button showVersionNumber = null;

 	private String currentPathAnalysis = null;
 	private SashForm sash;
 	private Text searchBox;
 	private ToolItem cancelIcon;
 	private Label searchLabel;

 	/**
 	 * Creates the form.
 	 *
 	 * @param toolKit
 	 * @return
 	 */
 	VisualizationForm(Composite parent, FormToolkit toolkit, PluginVisualizationView view) {
 		this.toolkit = toolkit;
 		this.view = view;
 		form = this.toolkit.createScrolledForm(parent);
 		managedForm = new ManagedForm(this.toolkit, this.form);
 		createHeaderRegion(form);
 		FillLayout layout = new FillLayout();
 		layout.marginHeight = 10;
 		layout.marginWidth = 4;
 		form.getBody().setLayout(layout);

 		this.toolkit.decorateFormHeading(this.form.getForm());
 		createSash(form.getBody());
 	}

 	public void setFocusedNodeName(String nodeName) {
 		form.setText(Plugin_Dependency_Analysis + ": " + nodeName);
 		searchBox.setText("");
 		form.reflow(true);
 	}

 	/**
 	 * Creates the header region of the form, with the search dialog, background
 	 * and title.  It also sets up the error reporting
 	 * @param form
 	 */
 	private void createHeaderRegion(ScrolledForm form) {
 		Composite headClient = new Composite(form.getForm().getHead(), SWT.NULL);
 		GridLayout glayout = new GridLayout();
 		glayout.marginWidth = glayout.marginHeight = 0;
 		glayout.numColumns = 3;
 		headClient.setLayout(glayout);
 		headClient.setBackgroundMode(SWT.INHERIT_DEFAULT);
 		searchLabel = new Label(headClient, SWT.NONE);
 		searchLabel.setText("Search:");
 		searchBox = toolkit.createText(headClient, "");
 		GridData data = new GridData();
 		data.widthHint = 300;
 		searchBox.setLayoutData(data);
 		ToolBar cancelBar = new ToolBar(headClient, SWT.FLAT );

 		cancelIcon = new ToolItem(cancelBar, SWT.NONE);
 		cancelIcon.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				searchBox.setText("");
 			}
 		});
 		cancelIcon.setImage(PDEVizImages.get(PDEVizImages.IMG_SEARCH_CANCEL));
 		toolkit.paintBordersFor(headClient);
 		form.setHeadClient(headClient);
 		searchBox.addModifyListener(new ModifyListener() {

 			public void modifyText(ModifyEvent e) {
 				if (searchBox.getText().length() > 0) {
 					cancelIcon.setEnabled(true);
 				} else {
 					cancelIcon.setEnabled(false);
 				}
 			}
 		});
 		cancelIcon.setEnabled(false);

 		form.setText(Plugin_Dependency_Analysis);
 		form.setImage(PDEVizImages.get(PDEVizImages.IMG_REQ_PLUGIN_OBJ));
 		enableSearchBox(false);

 		// Add a hyperlink listener for the messages
 		form.getForm().addMessageHyperlinkListener(new HyperlinkAdapter() {
 			public void linkActivated(org.eclipse.ui.forms.events.HyperlinkEvent e) {
 				String title = e.getLabel();
 				Object href = e.getHref();
 				if (href instanceof IMessage[] && ((IMessage[]) href).length > 1) {
 					Point hl = ((Control) e.widget).toDisplay(0, 0);
 					hl.x += 10;
 					hl.y += 10;
 					final Shell shell = new Shell(VisualizationForm.this.form.getShell(), SWT.ON_TOP | SWT.TOOL);
 					shell.setImage(getImage(VisualizationForm.this.form.getMessageType()));
 					shell.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 					shell.setBackgroundMode(SWT.INHERIT_DEFAULT);
 					GridLayout layout = new GridLayout();
 					layout.numColumns = 1;
 					layout.verticalSpacing = 0;
 					shell.setText(title);
 					shell.setLayout(layout);
 					Link link = new Link(shell, SWT.NONE);
 					link.setText("<A>close</A>");
 					GridData data = new GridData(SWT.RIGHT, SWT.CENTER, false, false);
 					link.setLayoutData(data);
 					link.addSelectionListener(new SelectionAdapter() {
 						public void widgetSelected(SelectionEvent e) {
 							shell.close();
 						}
 					});
 					Group group = new Group(shell, SWT.NONE);
 					data = new GridData(SWT.LEFT, SWT.TOP, true, true);
 					group.setLayoutData(data);
 					group.setLayout(layout);
 					group.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
 					FormText text = toolkit.createFormText(group, true);
 					configureFormText(VisualizationForm.this.form.getForm(), text);
 					if (href instanceof IMessage[]) {
 						text.setText(createFormTextContent((IMessage[]) href), true, false);
 					}

 					shell.setLocation(hl);
 					shell.pack();
 					shell.open();
 				} else if (href instanceof IMessage[]) {
 					IMessage oneMessage = ((IMessage[]) href)[0];
 					ErrorReporting error = (ErrorReporting) oneMessage.getData();
 					if (error != null) {
 						error.handleError();
 					}
 				}
 			}
 		});
 	}

 	private void configureFormText(final Form form, FormText text) {
 		text.addHyperlinkListener(new HyperlinkAdapter() {
 			public void linkActivated(HyperlinkEvent e) {
 				String is = (String) e.getHref();
 				try {
 					((FormText) e.widget).getShell().dispose();
 					int index = Integer.parseInt(is);
 					IMessage[] messages = form.getChildrenMessages();
 					IMessage message = messages[index];
 					ErrorReporting error = (ErrorReporting) message.getData();
 					if (error != null) {
 						error.handleError();
 					}
 				} catch (NumberFormatException ex) {
 				}
 			}
 		});
 		text.setImage("error", getImage(IMessageProvider.ERROR));
 		text.setImage("warning", getImage(IMessageProvider.WARNING));
 		text.setImage("info", getImage(IMessageProvider.INFORMATION));
 	}

 	String createFormTextContent(IMessage[] messages) {
 		StringWriter sw = new StringWriter();
 		PrintWriter pw = new PrintWriter(sw);
 		pw.println("<form>");
 		for (int i = 0; i < messages.length; i++) {
 			IMessage message = messages[i];
 			pw.print("<li vspace=\"false\" style=\"image\" indent=\"16\" value=\"");
 			switch (message.getMessageType()) {
 			case IMessageProvider.ERROR:
 				pw.print("error");
 				break;
 			case IMessageProvider.WARNING:
 				pw.print("warning");
 				break;
 			case IMessageProvider.INFORMATION:
 				pw.print("info");
 				break;
 			}
 			pw.print("\"> <a href=\"");
 			pw.print(i + "");
 			pw.print("\">");
 			if (message.getPrefix() != null) {
 				pw.print(message.getPrefix());
 			}
 			pw.print(message.getMessage());
 			pw.println("</a></li>");
 		}
 		pw.println("</form>");
 		pw.flush();
 		return sw.toString();
 	}

 	/**
 	 * Creates the sashform to separate the graph from the controls.
 	 *
 	 * @param parent
 	 */
 	private void createSash(Composite parent) {
 		sash = new SashForm(parent, SWT.NONE);
 		this.toolkit.paintBordersFor(parent);

 		createGraphSection(sash);
 		createControlsSection(sash);
 		sash.setWeights(new int[] { 10, 3 });
 	}

 	private class MyGraphViewer extends GraphViewer {
 		public MyGraphViewer(Composite parent, int style) {
 			super(parent, style);
 			Graph graph = new Graph(parent, style) {
 				public Point computeSize(int hint, int hint2, boolean changed) {
 					return new Point(0, 0);
 				}
 			};
 			setControl(graph);
 		}
 	}

 	/**
 	 * Creates the section of the form where the graph is drawn
 	 *
 	 * @param parent
 	 */
 	private void createGraphSection(Composite parent) {
 		Section section = this.toolkit.createSection(parent, Section.TITLE_BAR);
 		viewer = new MyGraphViewer(section, SWT.NONE);
 		section.setClient(viewer.getControl());
 	}

 	private void setDependencyPath(boolean enabled) {
 		if (showAllPaths.getEnabled() != enabled) {
 			showAllPaths.setEnabled(enabled);
 		}
 		if (showSmartPath.getEnabled() != enabled) {
 			showSmartPath.setEnabled(enabled);
 		}
 		if (showShortestPath.getEnabled() != enabled) {
 			showShortestPath.setEnabled(enabled);
 		}

 		if (!enabled) {
 			showAllPaths.setSelection(false);
 			showSmartPath.setSelection(false);
 			showShortestPath.setSelection(false);
 		} else {
 			if (currentPathAnalysis == Show_All_Paths) {
 				showAllPaths.setSelection(true);
 			} else if (currentPathAnalysis == Show_Smart_Path) {
 				showSmartPath.setSelection(true);
 			} else if (currentPathAnalysis == Show_Shortest_Path) {
 				showShortestPath.setSelection(true);
 			}
 		}
 		view.setDependencyPath(enabled, currentPathAnalysis);
 	}

 	/**
 	 * Creates the section holding the analysis controls.
 	 *
 	 * @param parent
 	 */
 	private void createControlsSection(Composite parent) {
 		Section controls = this.toolkit.createSection(parent, Section.TITLE_BAR | Section.EXPANDED);
 		controls.setText(Controls);
 		Composite controlComposite = new Composite(controls, SWT.NONE) {
 			public Point computeSize(int hint, int hint2, boolean changed) {
 				return new Point(0, 0);
 			}
 		};
 		this.toolkit.adapt(controlComposite);
 		controlComposite.setLayout(new GridLayout());

 		showVersionNumber = this.toolkit.createButton(controlComposite, Version_Number, SWT.CHECK);
 		showVersionNumber.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
 		showVersionNumber.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				view.showVersionNumber(showVersionNumber.getSelection());
 			}
 		});

 		dependencyAnalysis = this.toolkit.createButton(controlComposite, Show_Dependency_Path, SWT.CHECK);
 		dependencyAnalysis.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
 		dependencyAnalysis.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				setDependencyPath(((Button) e.getSource()).getSelection());
 			}
 		});

 		Section dependencyOptions = this.toolkit.createSection(controlComposite, Section.EXPANDED | Section.NO_TITLE);
 		dependencyOptions.setLayout(new FillLayout());
 		Composite dependencyOptionsComposite = this.toolkit.createComposite(dependencyOptions);
 		dependencyOptionsComposite.setLayout(new TableWrapLayout());

 		showSmartPath = this.toolkit.createButton(dependencyOptionsComposite, Show_Smart_Path, SWT.RADIO);
 		showSmartPath.setLayoutData(new TableWrapData(TableWrapData.FILL));
 		showSmartPath.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				currentPathAnalysis = Show_Smart_Path;
 				view.setDependencyPath(dependencyAnalysis.getSelection(), currentPathAnalysis);
 			}
 		});

 		showAllPaths = this.toolkit.createButton(dependencyOptionsComposite, Show_All_Paths, SWT.RADIO);
 		showAllPaths.setLayoutData(new TableWrapData(TableWrapData.FILL));
 		showAllPaths.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				currentPathAnalysis = Show_All_Paths;
 				view.setDependencyPath(dependencyAnalysis.getSelection(), currentPathAnalysis);
 			}
 		});

 		showShortestPath = this.toolkit.createButton(dependencyOptionsComposite, Show_Shortest_Path, SWT.RADIO);
 		showShortestPath.setLayoutData(new TableWrapData(TableWrapData.FILL));
 		showShortestPath.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				currentPathAnalysis = Show_Shortest_Path;
 				view.setDependencyPath(dependencyAnalysis.getSelection(), currentPathAnalysis);
 			}
 		});

 		currentPathAnalysis = Show_Smart_Path;

 		setDependencyPath(false);
 		dependencyOptions.setClient(dependencyOptionsComposite);


 		Composite filteringComposite = this.toolkit.createComposite(controlComposite, SWT.NONE);
 		filteringComposite.setLayout(new GridLayout(1, false));
 		final Button hideFragmentsButton = this.toolkit.createButton(filteringComposite, Hide_Fragments, SWT.CHECK);
 		hideFragmentsButton.addSelectionListener(new SelectionAdapter() {
 			public void widgetSelected(SelectionEvent e) {
 				view.setHideFragments(hideFragmentsButton.getSelection());
 			}
 		});

 		this.toolkit.createLabel(filteringComposite, SymbolicName_Match_Pattern);
 		final Text symbolicNamesMatchPattern = this.toolkit.createText(filteringComposite, "", SWT.BORDER);
 		symbolicNamesMatchPattern.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
 		symbolicNamesMatchPattern.addModifyListener(new ModifyListener() {

 			public void modifyText(ModifyEvent arg0) {
 				view.setSymbolicNameMatchPattern(symbolicNamesMatchPattern.getText());
 			}
 		});

 		this.toolkit.createLabel(filteringComposite, SymbolicName_Exclude_Pattern);
 		final Text symbolicNamesExcludePattern = this.toolkit.createText(filteringComposite, "", SWT.BORDER);
 		symbolicNamesExcludePattern.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
 		symbolicNamesExcludePattern.addModifyListener(new ModifyListener() {

 			public void modifyText(ModifyEvent arg0) {
 				view.setSymbolicNameExcludePattern(symbolicNamesExcludePattern.getText());
 			}
 		});


 		controls.setClient(controlComposite);
 	}


 	Button getDependencyAnalysis() {
 		return dependencyAnalysis;
 	}

 	/**
 	 * Gets the currentGraphViewern
 	 *
 	 * @return
 	 */
 	public GraphViewer getGraphViewer() {
 		return viewer;
 	}

 	/**
 	 * Gets the form we created.
 	 */
 	public ScrolledForm getForm() {
 		return form;
 	}

 	public ManagedForm getManagedForm() {
 		return managedForm;
 	}

 	public Text getSearchBox() {
 		return this.searchBox;
 	}

 	public void enableSearchBox(boolean enable) {
 		this.searchLabel.setEnabled(enable);
 		this.searchBox.setEnabled(enable);
 	}

 	private Image getImage(int type) {
 		switch (type) {
 		case IMessageProvider.ERROR:
 			return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_ERROR_TSK);
 		case IMessageProvider.WARNING:
 			return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_WARN_TSK);
 		case IMessageProvider.INFORMATION:
 			return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_INFO_TSK);
 		}
 		return null;
 	}
 }
	/*******************************************************************************
	* Copyright 2005, 2012 CHISEL Group, University of Victoria, Victoria, BC,
	* Canada. 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: The Chisel Group, University of Victoria IBM CAS, IBM Toronto
	* Lab
	******************************************************************************/
	package org.eclipse.pde.internal.visualization.dependency.views;

	import java.io.PrintWriter;
	import java.io.StringWriter;

	import org.eclipse.jface.dialogs.IMessageProvider;
	import org.eclipse.pde.internal.visualization.dependency.PDEVizImages;
	import org.eclipse.pde.internal.visualization.dependency.analysis.ErrorReporting;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.SashForm;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.layout.FillLayout;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	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.Group;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Link;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;
	import org.eclipse.swt.widgets.ToolBar;
	import org.eclipse.swt.widgets.ToolItem;
	import org.eclipse.ui.ISharedImages;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.forms.IMessage;
	import org.eclipse.ui.forms.ManagedForm;
	import org.eclipse.ui.forms.events.HyperlinkAdapter;
	import org.eclipse.ui.forms.events.HyperlinkEvent;
	import org.eclipse.ui.forms.widgets.Form;
	import org.eclipse.ui.forms.widgets.FormText;
	import org.eclipse.ui.forms.widgets.FormToolkit;
	import org.eclipse.ui.forms.widgets.ScrolledForm;
	import org.eclipse.ui.forms.widgets.Section;
	import org.eclipse.ui.forms.widgets.TableWrapData;
	import org.eclipse.ui.forms.widgets.TableWrapLayout;
	import org.eclipse.zest.core.viewers.GraphViewer;
	import org.eclipse.zest.core.widgets.Graph;

	/**
	* This class encapsulates the process of creating the form view in the PDE
	* visualization tool.
	*/
	/* package */class VisualizationForm {

	private static final String SymbolicName_Match_Pattern = "Bundle Name Match Regexp";
	private static final String SymbolicName_Exclude_Pattern = "Bundle Name Exclude Regexp";
	private static final String Hide_Fragments = "Hide Fragments";
	/*
	* These are all the strings used in the form. These can probably be
	* abstracted for internationalization
	*/
	private static String Plugin_Dependency_Analysis = "Plug-in Dependency Analysis";
	private static String Controls = "Options";
	private static String Show_Dependency_Path = "Show Dependency Path";
	private static String Version_Number = "Show Bundle Version Numbers";

	/*
	* These are strings and used to determine which radio button is selected
	*/
	public static String Show_All_Paths = "Show All Paths";
	public static String Show_Smart_Path = "Show Smart Path";
	public static String Show_Shortest_Path = "Show Shortest Path";

	/*
	* Some parts of the form we may need access to
	*/
	private ScrolledForm form;
	private FormToolkit toolkit;
	private ManagedForm managedForm;
	private GraphViewer viewer;
	private PluginVisualizationView view;

	/*
	* Some buttons that we need to access in local methods
	*/
	private Button showSmartPath = null;
	private Button showShortestPath = null;
	private Button showAllPaths = null;
	private Button dependencyAnalysis = null;
	private Button showVersionNumber = null;

	private String currentPathAnalysis = null;
	private SashForm sash;
	private Text searchBox;
	private ToolItem cancelIcon;
	private Label searchLabel;

	/**
	* Creates the form.
	*
	* @param toolKit
	* @return
	*/
	VisualizationForm(Composite parent, FormToolkit toolkit, PluginVisualizationView view) {
	this.toolkit = toolkit;
	this.view = view;
	form = this.toolkit.createScrolledForm(parent);
	managedForm = new ManagedForm(this.toolkit, this.form);
	createHeaderRegion(form);
	FillLayout layout = new FillLayout();
	layout.marginHeight = 10;
	layout.marginWidth = 4;
	form.getBody().setLayout(layout);

	this.toolkit.decorateFormHeading(this.form.getForm());
	createSash(form.getBody());
	}

	public void setFocusedNodeName(String nodeName) {
	form.setText(Plugin_Dependency_Analysis + ": " + nodeName);
	searchBox.setText("");
	form.reflow(true);
	}

	/**
	* Creates the header region of the form, with the search dialog, background
	* and title. It also sets up the error reporting
	* @param form
	*/
	private void createHeaderRegion(ScrolledForm form) {
	Composite headClient = new Composite(form.getForm().getHead(), SWT.NULL);
	GridLayout glayout = new GridLayout();
	glayout.marginWidth = glayout.marginHeight = 0;
	glayout.numColumns = 3;
	headClient.setLayout(glayout);
	headClient.setBackgroundMode(SWT.INHERIT_DEFAULT);
	searchLabel = new Label(headClient, SWT.NONE);
	searchLabel.setText("Search:");
	searchBox = toolkit.createText(headClient, "");
	GridData data = new GridData();
	data.widthHint = 300;
	searchBox.setLayoutData(data);
	ToolBar cancelBar = new ToolBar(headClient, SWT.FLAT );

	cancelIcon = new ToolItem(cancelBar, SWT.NONE);
	cancelIcon.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	searchBox.setText("");
	}
	});
	cancelIcon.setImage(PDEVizImages.get(PDEVizImages.IMG_SEARCH_CANCEL));
	toolkit.paintBordersFor(headClient);
	form.setHeadClient(headClient);
	searchBox.addModifyListener(new ModifyListener() {

	public void modifyText(ModifyEvent e) {
	if (searchBox.getText().length() > 0) {
	cancelIcon.setEnabled(true);
	} else {
	cancelIcon.setEnabled(false);
	}
	}
	});
	cancelIcon.setEnabled(false);

	form.setText(Plugin_Dependency_Analysis);
	form.setImage(PDEVizImages.get(PDEVizImages.IMG_REQ_PLUGIN_OBJ));
	enableSearchBox(false);

	// Add a hyperlink listener for the messages
	form.getForm().addMessageHyperlinkListener(new HyperlinkAdapter() {
	public void linkActivated(org.eclipse.ui.forms.events.HyperlinkEvent e) {
	String title = e.getLabel();
	Object href = e.getHref();
	if (href instanceof IMessage[] && ((IMessage[]) href).length > 1) {
	Point hl = ((Control) e.widget).toDisplay(0, 0);
	hl.x += 10;
	hl.y += 10;
	final Shell shell = new Shell(VisualizationForm.this.form.getShell(), SWT.ON_TOP \| SWT.TOOL);
	shell.setImage(getImage(VisualizationForm.this.form.getMessageType()));
	shell.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
	shell.setBackgroundMode(SWT.INHERIT_DEFAULT);
	GridLayout layout = new GridLayout();
	layout.numColumns = 1;
	layout.verticalSpacing = 0;
	shell.setText(title);
	shell.setLayout(layout);
	Link link = new Link(shell, SWT.NONE);
	link.setText("<A>close</A>");
	GridData data = new GridData(SWT.RIGHT, SWT.CENTER, false, false);
	link.setLayoutData(data);
	link.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	shell.close();
	}
	});
	Group group = new Group(shell, SWT.NONE);
	data = new GridData(SWT.LEFT, SWT.TOP, true, true);
	group.setLayoutData(data);
	group.setLayout(layout);
	group.setBackground(Display.getCurrent().getSystemColor(SWT.COLOR_WHITE));
	FormText text = toolkit.createFormText(group, true);
	configureFormText(VisualizationForm.this.form.getForm(), text);
	if (href instanceof IMessage[]) {
	text.setText(createFormTextContent((IMessage[]) href), true, false);
	}

	shell.setLocation(hl);
	shell.pack();
	shell.open();
	} else if (href instanceof IMessage[]) {
	IMessage oneMessage = ((IMessage[]) href)[0];
	ErrorReporting error = (ErrorReporting) oneMessage.getData();
	if (error != null) {
	error.handleError();
	}
	}
	}
	});
	}

	private void configureFormText(final Form form, FormText text) {
	text.addHyperlinkListener(new HyperlinkAdapter() {
	public void linkActivated(HyperlinkEvent e) {
	String is = (String) e.getHref();
	try {
	((FormText) e.widget).getShell().dispose();
	int index = Integer.parseInt(is);
	IMessage[] messages = form.getChildrenMessages();
	IMessage message = messages[index];
	ErrorReporting error = (ErrorReporting) message.getData();
	if (error != null) {
	error.handleError();
	}
	} catch (NumberFormatException ex) {
	}
	}
	});
	text.setImage("error", getImage(IMessageProvider.ERROR));
	text.setImage("warning", getImage(IMessageProvider.WARNING));
	text.setImage("info", getImage(IMessageProvider.INFORMATION));
	}

	String createFormTextContent(IMessage[] messages) {
	StringWriter sw = new StringWriter();
	PrintWriter pw = new PrintWriter(sw);
	pw.println("<form>");
	for (int i = 0; i < messages.length; i++) {
	IMessage message = messages[i];
	pw.print("<li vspace=\"false\" style=\"image\" indent=\"16\" value=\"");
	switch (message.getMessageType()) {
	case IMessageProvider.ERROR:
	pw.print("error");
	break;
	case IMessageProvider.WARNING:
	pw.print("warning");
	break;
	case IMessageProvider.INFORMATION:
	pw.print("info");
	break;
	}
	pw.print("\"> <a href=\"");
	pw.print(i + "");
	pw.print("\">");
	if (message.getPrefix() != null) {
	pw.print(message.getPrefix());
	}
	pw.print(message.getMessage());
	pw.println("</a></li>");
	}
	pw.println("</form>");
	pw.flush();
	return sw.toString();
	}

	/**
	* Creates the sashform to separate the graph from the controls.
	*
	* @param parent
	*/
	private void createSash(Composite parent) {
	sash = new SashForm(parent, SWT.NONE);
	this.toolkit.paintBordersFor(parent);

	createGraphSection(sash);
	createControlsSection(sash);
	sash.setWeights(new int[] { 10, 3 });
	}

	private class MyGraphViewer extends GraphViewer {
	public MyGraphViewer(Composite parent, int style) {
	super(parent, style);
	Graph graph = new Graph(parent, style) {
	public Point computeSize(int hint, int hint2, boolean changed) {
	return new Point(0, 0);
	}
	};
	setControl(graph);
	}
	}

	/**
	* Creates the section of the form where the graph is drawn
	*
	* @param parent
	*/
	private void createGraphSection(Composite parent) {
	Section section = this.toolkit.createSection(parent, Section.TITLE_BAR);
	viewer = new MyGraphViewer(section, SWT.NONE);
	section.setClient(viewer.getControl());
	}

	private void setDependencyPath(boolean enabled) {
	if (showAllPaths.getEnabled() != enabled) {
	showAllPaths.setEnabled(enabled);
	}
	if (showSmartPath.getEnabled() != enabled) {
	showSmartPath.setEnabled(enabled);
	}
	if (showShortestPath.getEnabled() != enabled) {
	showShortestPath.setEnabled(enabled);
	}

	if (!enabled) {
	showAllPaths.setSelection(false);
	showSmartPath.setSelection(false);
	showShortestPath.setSelection(false);
	} else {
	if (currentPathAnalysis == Show_All_Paths) {
	showAllPaths.setSelection(true);
	} else if (currentPathAnalysis == Show_Smart_Path) {
	showSmartPath.setSelection(true);
	} else if (currentPathAnalysis == Show_Shortest_Path) {
	showShortestPath.setSelection(true);
	}
	}
	view.setDependencyPath(enabled, currentPathAnalysis);
	}

	/**
	* Creates the section holding the analysis controls.
	*
	* @param parent
	*/
	private void createControlsSection(Composite parent) {
	Section controls = this.toolkit.createSection(parent, Section.TITLE_BAR \| Section.EXPANDED);
	controls.setText(Controls);
	Composite controlComposite = new Composite(controls, SWT.NONE) {
	public Point computeSize(int hint, int hint2, boolean changed) {
	return new Point(0, 0);
	}
	};
	this.toolkit.adapt(controlComposite);
	controlComposite.setLayout(new GridLayout());

	showVersionNumber = this.toolkit.createButton(controlComposite, Version_Number, SWT.CHECK);
	showVersionNumber.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
	showVersionNumber.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	view.showVersionNumber(showVersionNumber.getSelection());
	}
	});

	dependencyAnalysis = this.toolkit.createButton(controlComposite, Show_Dependency_Path, SWT.CHECK);
	dependencyAnalysis.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
	dependencyAnalysis.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	setDependencyPath(((Button) e.getSource()).getSelection());
	}
	});

	Section dependencyOptions = this.toolkit.createSection(controlComposite, Section.EXPANDED \| Section.NO_TITLE);
	dependencyOptions.setLayout(new FillLayout());
	Composite dependencyOptionsComposite = this.toolkit.createComposite(dependencyOptions);
	dependencyOptionsComposite.setLayout(new TableWrapLayout());

	showSmartPath = this.toolkit.createButton(dependencyOptionsComposite, Show_Smart_Path, SWT.RADIO);
	showSmartPath.setLayoutData(new TableWrapData(TableWrapData.FILL));
	showSmartPath.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	currentPathAnalysis = Show_Smart_Path;
	view.setDependencyPath(dependencyAnalysis.getSelection(), currentPathAnalysis);
	}
	});

	showAllPaths = this.toolkit.createButton(dependencyOptionsComposite, Show_All_Paths, SWT.RADIO);
	showAllPaths.setLayoutData(new TableWrapData(TableWrapData.FILL));
	showAllPaths.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	currentPathAnalysis = Show_All_Paths;
	view.setDependencyPath(dependencyAnalysis.getSelection(), currentPathAnalysis);
	}
	});

	showShortestPath = this.toolkit.createButton(dependencyOptionsComposite, Show_Shortest_Path, SWT.RADIO);
	showShortestPath.setLayoutData(new TableWrapData(TableWrapData.FILL));
	showShortestPath.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	currentPathAnalysis = Show_Shortest_Path;
	view.setDependencyPath(dependencyAnalysis.getSelection(), currentPathAnalysis);
	}
	});

	currentPathAnalysis = Show_Smart_Path;

	setDependencyPath(false);
	dependencyOptions.setClient(dependencyOptionsComposite);


	Composite filteringComposite = this.toolkit.createComposite(controlComposite, SWT.NONE);
	filteringComposite.setLayout(new GridLayout(1, false));
	final Button hideFragmentsButton = this.toolkit.createButton(filteringComposite, Hide_Fragments, SWT.CHECK);
	hideFragmentsButton.addSelectionListener(new SelectionAdapter() {
	public void widgetSelected(SelectionEvent e) {
	view.setHideFragments(hideFragmentsButton.getSelection());
	}
	});

	this.toolkit.createLabel(filteringComposite, SymbolicName_Match_Pattern);
	final Text symbolicNamesMatchPattern = this.toolkit.createText(filteringComposite, "", SWT.BORDER);
	symbolicNamesMatchPattern.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
	symbolicNamesMatchPattern.addModifyListener(new ModifyListener() {

	public void modifyText(ModifyEvent arg0) {
	view.setSymbolicNameMatchPattern(symbolicNamesMatchPattern.getText());
	}
	});

	this.toolkit.createLabel(filteringComposite, SymbolicName_Exclude_Pattern);
	final Text symbolicNamesExcludePattern = this.toolkit.createText(filteringComposite, "", SWT.BORDER);
	symbolicNamesExcludePattern.setLayoutData(new GridData(SWT.FILL, SWT.NONE, true, false));
	symbolicNamesExcludePattern.addModifyListener(new ModifyListener() {

	public void modifyText(ModifyEvent arg0) {
	view.setSymbolicNameExcludePattern(symbolicNamesExcludePattern.getText());
	}
	});



	controls.setClient(controlComposite);
	}


	Button getDependencyAnalysis() {
	return dependencyAnalysis;
	}

	/**
	* Gets the currentGraphViewern
	*
	* @return
	*/
	public GraphViewer getGraphViewer() {
	return viewer;
	}

	/**
	* Gets the form we created.
	*/
	public ScrolledForm getForm() {
	return form;
	}

	public ManagedForm getManagedForm() {
	return managedForm;
	}

	public Text getSearchBox() {
	return this.searchBox;
	}

	public void enableSearchBox(boolean enable) {
	this.searchLabel.setEnabled(enable);
	this.searchBox.setEnabled(enable);
	}

	private Image getImage(int type) {
	switch (type) {
	case IMessageProvider.ERROR:
	return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_ERROR_TSK);
	case IMessageProvider.WARNING:
	return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_WARN_TSK);
	case IMessageProvider.INFORMATION:
	return PlatformUI.getWorkbench().getSharedImages().getImage(ISharedImages.IMG_OBJS_INFO_TSK);
	}
	return null;
	}
	}