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Posted to commits@taverna.apache.org by re...@apache.org on 2015/03/26 19:52:30 UTC

[41/51] [partial] incubator-taverna-workbench git commit: all packages are moved to org.apache.taverna.*

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListConfigurationComponent.java
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diff --git a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListConfigurationComponent.java b/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListConfigurationComponent.java
deleted file mode 100644
index c0e3aab..0000000
--- a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListConfigurationComponent.java
+++ /dev/null
@@ -1,119 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2012 The University of Manchester
- *
- *  Modifications to the initial code base are copyright of their
- *  respective authors, or their employers as appropriate.
- *
- *  This program 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 program 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 program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- ******************************************************************************/
-package net.sf.taverna.t2.workbench.ui.views.contextualviews.activity;
-
-import static java.awt.BorderLayout.CENTER;
-import static java.awt.BorderLayout.EAST;
-import static java.awt.BorderLayout.SOUTH;
-import static java.awt.FlowLayout.RIGHT;
-
-import java.awt.BorderLayout;
-import java.awt.Component;
-import java.awt.FlowLayout;
-import java.awt.event.ActionEvent;
-import java.util.List;
-
-import javax.swing.AbstractAction;
-import javax.swing.Action;
-import javax.swing.JButton;
-import javax.swing.JComponent;
-import javax.swing.JPanel;
-import javax.swing.JScrollPane;
-
-/**
- * @author David Withers
- */
-@SuppressWarnings("serial")
-public abstract class ListConfigurationComponent<T> extends JPanel {
-	private static final String REMOVE = "Remove";
-	private static final String ADD = "Add";
-
-	private String name;
-	private List<T> items;
-	private JPanel listPanel;
-
-	public ListConfigurationComponent(String name, List<T> items) {
-		this.name = name;
-		setLayout(new BorderLayout());
-
-		listPanel = new JPanel(new ListLayout());
-		JPanel buttonPanel = new JPanel(new FlowLayout(RIGHT));
-		buttonPanel.add(new JButton(createAddAction()));
-
-		add(new JScrollPane(listPanel), CENTER);
-		add(buttonPanel, SOUTH);
-
-		setItems(items);
-	}
-
-	protected void setItems(List<T> items) {
-		this.items = items;
-		listPanel.removeAll();
-		for (T item : items)
-			addItemComponent(item);
-	}
-
-	protected void addItem(T item) {
-		items.add(item);
-		addItemComponent(item);
-	}
-
-	protected void addItemComponent(T item) {
-		JComponent itemPanel = new JPanel(new BorderLayout());
-		itemPanel.add(createItemComponent(item), CENTER);
-		itemPanel.add(new JButton(createRemoveAction(item)), EAST);
-		listPanel.add(itemPanel);
-		listPanel.revalidate();
-		listPanel.repaint();
-	}
-
-	protected void removeItem(T item) {
-		int index = items.indexOf(item);
-		if (index >= 0) {
-			items.remove(index);
-			listPanel.remove(index);
-			listPanel.revalidate();
-			listPanel.repaint();
-		}
-	}
-
-	private Action createRemoveAction(final T item) {
-		return new AbstractAction(REMOVE) {
-			@Override
-			public void actionPerformed(ActionEvent e) {
-				removeItem(item);
-			}
-		};
-	}
-
-	private Action createAddAction() {
-		return new AbstractAction(ADD + " " + name) {
-			@Override
-			public void actionPerformed(ActionEvent e) {
-				addItem(createDefaultItem());
-			}
-		};
-	}
-
-	protected abstract Component createItemComponent(T item);
-
-	protected abstract T createDefaultItem();
-}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListLayout.java
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diff --git a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListLayout.java b/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListLayout.java
deleted file mode 100644
index 0ce35b5..0000000
--- a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ListLayout.java
+++ /dev/null
@@ -1,92 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2012 The University of Manchester
- *
- *  Modifications to the initial code base are copyright of their
- *  respective authors, or their employers as appropriate.
- *
- *  This program 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 program 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 program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- ******************************************************************************/
-package net.sf.taverna.t2.workbench.ui.views.contextualviews.activity;
-
-import java.awt.Component;
-import java.awt.Container;
-import java.awt.Dimension;
-import java.awt.Insets;
-import java.awt.LayoutManager;
-
-/**
- * Lays out components vertically using their preferred height and the available
- * width.
- * 
- * @author David Withers
- */
-public class ListLayout implements LayoutManager {
-	private static final int DEFAULT_GAP = 5;
-	private final int gap;
-
-	public ListLayout() {
-		this(DEFAULT_GAP);
-	}
-
-	public ListLayout(int gap) {
-		this.gap = gap;
-	}
-
-	@Override
-	public void removeLayoutComponent(Component comp) {
-	}
-
-	@Override
-	public void addLayoutComponent(String name, Component comp) {
-	}
-
-	@Override
-	public void layoutContainer(Container parent) {
-		Insets insets = parent.getInsets();
-		int x = insets.left;
-		int y = insets.top;
-		int width = parent.getWidth() - insets.left - insets.right;
-		Component[] components = parent.getComponents();
-		for (int i = 0; i < components.length; i++) {
-			components[i].setLocation(x, y);
-			components[i].setSize(width,
-					components[i].getPreferredSize().height);
-			y = y + gap + components[i].getHeight();
-		}
-	}
-
-	@Override
-	public Dimension minimumLayoutSize(Container parent) {
-		Insets insets = parent.getInsets();
-		int minimumWidth = 0;
-		int minimumHeight = 0;
-		Component[] components = parent.getComponents();
-		for (int i = 0; i < components.length; i++) {
-			Dimension size = components[i].getPreferredSize();
-			if (size.width > minimumWidth)
-				minimumWidth = size.width;
-			minimumHeight = minimumHeight + size.height + gap;
-		}
-		minimumWidth = minimumWidth + insets.left + insets.right;
-		minimumHeight = minimumHeight + insets.top + insets.bottom;
-
-		return new Dimension(minimumWidth, minimumHeight);
-	}
-
-	@Override
-	public Dimension preferredLayoutSize(Container parent) {
-		return minimumLayoutSize(parent);
-	}
-}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/MultiPageActivityConfigurationPanel.java
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diff --git a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/MultiPageActivityConfigurationPanel.java b/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/MultiPageActivityConfigurationPanel.java
deleted file mode 100644
index c6862ff..0000000
--- a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/MultiPageActivityConfigurationPanel.java
+++ /dev/null
@@ -1,65 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2012 The University of Manchester
- *
- *  Modifications to the initial code base are copyright of their
- *  respective authors, or their employers as appropriate.
- *
- *  This program 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 program 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 program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- ******************************************************************************/
-package net.sf.taverna.t2.workbench.ui.views.contextualviews.activity;
-
-import static java.awt.BorderLayout.CENTER;
-
-import java.awt.BorderLayout;
-import java.awt.Component;
-
-import javax.swing.JTabbedPane;
-
-import org.apache.taverna.scufl2.api.activity.Activity;
-
-/**
- * Component for configuring activities that have multiple configuration pages.
- * 
- * @author David Withers
- */
-@SuppressWarnings("serial")
-public abstract class MultiPageActivityConfigurationPanel extends
-		ActivityConfigurationPanel {
-	private JTabbedPane tabbedPane;
-
-	/**
-	 * Constructs a new <code>MultiPageActivityConfigurationPanel</code>.
-	 * 
-	 * @param activity
-	 */
-	public MultiPageActivityConfigurationPanel(Activity activity) {
-		super(activity);
-		setLayout(new BorderLayout());
-		tabbedPane = new JTabbedPane();
-		add(tabbedPane, CENTER);
-	}
-
-	public void addPage(String name, Component component) {
-		tabbedPane.addTab(name, component);
-	}
-
-	public void removePage(String name) {
-		tabbedPane.removeTabAt(tabbedPane.indexOfTab(name));
-	}
-
-	public void removeAllPages() {
-		tabbedPane.removeAll();
-	}
-}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ScriptConfigurationComponent.java
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diff --git a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ScriptConfigurationComponent.java b/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ScriptConfigurationComponent.java
deleted file mode 100644
index 8cb7652..0000000
--- a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ScriptConfigurationComponent.java
+++ /dev/null
@@ -1,150 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2012 The University of Manchester
- *
- *  Modifications to the initial code base are copyright of their
- *  respective authors, or their employers as appropriate.
- *
- *  This program 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 program 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 program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- ******************************************************************************/
-package net.sf.taverna.t2.workbench.ui.views.contextualviews.activity;
-
-import static java.awt.BorderLayout.CENTER;
-import static java.awt.BorderLayout.SOUTH;
-import static java.awt.Color.WHITE;
-import static java.awt.Font.PLAIN;
-import static javax.swing.JOptionPane.INFORMATION_MESSAGE;
-import static javax.swing.JOptionPane.YES_NO_OPTION;
-import static javax.swing.JOptionPane.YES_OPTION;
-import static javax.swing.JOptionPane.showConfirmDialog;
-import static javax.swing.JOptionPane.showMessageDialog;
-import static net.sf.taverna.t2.lang.ui.FileTools.readStringFromFile;
-import static net.sf.taverna.t2.lang.ui.FileTools.saveStringToFile;
-
-import java.awt.BorderLayout;
-import java.awt.Dimension;
-import java.awt.FlowLayout;
-import java.awt.Font;
-import java.awt.event.ActionEvent;
-import java.awt.event.ActionListener;
-import java.util.Set;
-
-import javax.swing.JButton;
-import javax.swing.JPanel;
-import javax.swing.JTextPane;
-
-import net.sf.taverna.t2.lang.ui.KeywordDocument;
-import net.sf.taverna.t2.lang.ui.LineEnabledTextPanel;
-import net.sf.taverna.t2.lang.ui.LinePainter;
-import net.sf.taverna.t2.lang.ui.NoWrapEditorKit;
-
-/**
- * Component for configuring activities that have scripts.
- *
- * @author David Withers
- */
-@SuppressWarnings("serial")
-public class ScriptConfigurationComponent extends JPanel {
-	private JTextPane scriptTextArea;
-
-	public ScriptConfigurationComponent(String script, Set<String> keywords,
-			Set<String> ports, final String scriptType,
-			final String fileExtension) {
-		this(script, keywords, ports, scriptType, fileExtension, "");
-	}
-
-	public ScriptConfigurationComponent(String script, Set<String> keywords,
-			Set<String> ports, final String scriptType,
-			final String fileExtension, final String resetScript) {
-		super(new BorderLayout());
-		scriptTextArea = new JTextPane();
-		new LinePainter(scriptTextArea, WHITE);
-
-		final KeywordDocument doc = new KeywordDocument(keywords, ports);
-
-		// NOTE: Due to T2-1145 - always set editor kit BEFORE setDocument
-		scriptTextArea.setEditorKit(new NoWrapEditorKit());
-		scriptTextArea.setFont(new Font("Monospaced", PLAIN, 14));
-		scriptTextArea.setDocument(doc);
-		scriptTextArea.setText(script);
-		scriptTextArea.setCaretPosition(0);
-		scriptTextArea.setPreferredSize(new Dimension(200, 100));
-
-		add(new LineEnabledTextPanel(scriptTextArea), CENTER);
-
-		final JButton checkScriptButton = new JButton("Check script");
-		checkScriptButton.setToolTipText("Check the " + scriptType + " script");
-		checkScriptButton.addActionListener(new ActionListener() {
-			@Override
-			public void actionPerformed(ActionEvent ex) {
-				showMessageDialog(ScriptConfigurationComponent.this, scriptType
-						+ " script check not implemented", scriptType
-						+ " script check", INFORMATION_MESSAGE);
-			}
-		});
-
-		JButton loadScriptButton = new JButton("Load script");
-		loadScriptButton.setToolTipText("Load a " + scriptType
-				+ " script from a file");
-		loadScriptButton.addActionListener(new ActionListener() {
-			@Override
-			public void actionPerformed(ActionEvent e) {
-				String newScript = readStringFromFile(
-						ScriptConfigurationComponent.this, "Load " + scriptType
-								+ " script", fileExtension);
-				if (newScript != null) {
-					scriptTextArea.setText(newScript);
-					scriptTextArea.setCaretPosition(0);
-				}
-			}
-		});
-
-		JButton saveRScriptButton = new JButton("Save script");
-		saveRScriptButton.setToolTipText("Save the " + scriptType
-				+ " script to a file");
-		saveRScriptButton.addActionListener(new ActionListener() {
-			@Override
-			public void actionPerformed(ActionEvent e) {
-				saveStringToFile(ScriptConfigurationComponent.this, "Save "
-						+ scriptType + " script", fileExtension,
-						scriptTextArea.getText());
-			}
-		});
-
-		JButton clearScriptButton = new JButton("Clear script");
-		clearScriptButton.setToolTipText("Clear current script from the edit area");
-		clearScriptButton.addActionListener(new ActionListener() {
-			@Override
-			public void actionPerformed(ActionEvent e) {
-				if (showConfirmDialog(ScriptConfigurationComponent.this,
-						"Do you really want to clear the script?",
-						"Clearing the script", YES_NO_OPTION) == YES_OPTION)
-					scriptTextArea.setText(resetScript);
-			}
-		});
-
-		JPanel buttonPanel = new JPanel();
-		buttonPanel.setLayout(new FlowLayout());
-		buttonPanel.add(checkScriptButton);
-		buttonPanel.add(loadScriptButton);
-		buttonPanel.add(saveRScriptButton);
-		buttonPanel.add(clearScriptButton);
-
-		add(buttonPanel, SOUTH);
-	}
-
-	public String getScript() {
-		return scriptTextArea.getText();
-	}
-}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextField.java
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diff --git a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextField.java b/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextField.java
deleted file mode 100644
index cf1ff96..0000000
--- a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextField.java
+++ /dev/null
@@ -1,53 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2012 The University of Manchester
- *
- *  Modifications to the initial code base are copyright of their
- *  respective authors, or their employers as appropriate.
- *
- *  This program 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 program 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 program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- ******************************************************************************/
-package net.sf.taverna.t2.workbench.ui.views.contextualviews.activity;
-
-import javax.swing.JTextField;
-
-/**
- * Adds a "<tt>valid</tt>" property to a JTextField.
- * 
- * @author David Withers
- */
-@SuppressWarnings("serial")
-public class ValidatingTextField extends JTextField {
-	private boolean valid = true;
-
-	public ValidatingTextField() {
-	}
-
-	public ValidatingTextField(String text) {
-		super(text);
-	}
-
-	@Override
-	public boolean isValid() {
-		return valid;
-	}
-
-	public void setValid(boolean valid) {
-		if (this.valid != valid) {
-			boolean old = this.valid;
-			this.valid = valid;
-			firePropertyChange("valid", old, valid);
-		}
-	}
-}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextGroup.java
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diff --git a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextGroup.java b/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextGroup.java
deleted file mode 100644
index 7597f7c..0000000
--- a/taverna-contextual-views-api/src/main/java/net/sf/taverna/t2/workbench/ui/views/contextualviews/activity/ValidatingTextGroup.java
+++ /dev/null
@@ -1,119 +0,0 @@
-/*******************************************************************************
- * Copyright (C) 2012 The University of Manchester
- *
- *  Modifications to the initial code base are copyright of their
- *  respective authors, or their employers as appropriate.
- *
- *  This program 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 program 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 program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
- ******************************************************************************/
-package net.sf.taverna.t2.workbench.ui.views.contextualviews.activity;
-
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
-
-import javax.swing.event.DocumentEvent;
-import javax.swing.event.DocumentListener;
-
-/**
- *
- *
- * @author David Withers
- */
-public class ValidatingTextGroup {
-	private Map<ValidatingTextField, DocumentListener> textComponents;
-
-	public ValidatingTextGroup() {
-		textComponents = new HashMap<>();
-	}
-
-	public void addValidTextComponent(ValidatingTextField textComponent) {
-		setUniqueText(textComponent);
-		DocumentListener documentListener = new ValidatorDocumentListener();
-		textComponent.getDocument().addDocumentListener(documentListener);
-		textComponents.put(textComponent, documentListener);
-	}
-
-	public void addTextComponent(ValidatingTextField textComponent) {
-		DocumentListener documentListener = new ValidatorDocumentListener();
-		textComponent.getDocument().addDocumentListener(documentListener);
-		textComponents.put(textComponent, documentListener);
-		validate();
-	}
-
-	public void removeTextComponent(ValidatingTextField textComponent) {
-		textComponent.getDocument().removeDocumentListener(
-				textComponents.remove(textComponent));
-		validate();
-	}
-
-	private void setUniqueText(ValidatingTextField textComponent) {
-		String text = textComponent.getText();
-		if (textExists(text)) {
-			// Remove any existing number suffix
-			String nameTemplate = text.replaceAll("_\\d+$", "_");
-			long i = 1;
-			do {
-				text = nameTemplate + i++;
-			} while (textExists(text));
-
-			textComponent.setText(text);
-		}
-	}
-
-	private void validate() {
-		Map<String, ValidatingTextField> textValues = new HashMap<>();
-		Set<ValidatingTextField> maybeValid = new HashSet<>();
-		for (ValidatingTextField textComponent : textComponents.keySet()) {
-			ValidatingTextField duplicate = textValues.get(textComponent
-					.getText());
-			if (duplicate != null) {
-				duplicate.setValid(false);
-				maybeValid.remove(duplicate);
-				textComponent.setValid(false);
-			} else {
-				textValues.put(textComponent.getText(), textComponent);
-				maybeValid.add(textComponent);
-			}
-		}
-		for (ValidatingTextField textComponent : maybeValid)
-			textComponent.setValid(true);
-	}
-
-	private boolean textExists(String text) {
-		for (ValidatingTextField currentTextComponent : textComponents.keySet())
-			if (text.equals(currentTextComponent.getText()))
-				return true;
-		return false;
-	}
-
-	class ValidatorDocumentListener implements DocumentListener {
-		@Override
-		public void insertUpdate(DocumentEvent e) {
-			validate();
-		}
-
-		@Override
-		public void removeUpdate(DocumentEvent e) {
-			validate();
-		}
-
-		@Override
-		public void changedUpdate(DocumentEvent e) {
-			validate();
-		}
-	}
-}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityConfigurationAction.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityConfigurationAction.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityConfigurationAction.java
new file mode 100644
index 0000000..23fae78
--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityConfigurationAction.java
@@ -0,0 +1,166 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.actions.activity;
+
+import java.util.List;
+import java.util.WeakHashMap;
+
+import javax.swing.AbstractAction;
+import javax.swing.JDialog;
+
+import org.apache.taverna.lang.observer.Observable;
+import org.apache.taverna.lang.observer.Observer;
+import org.apache.taverna.servicedescriptions.ServiceDescription;
+import org.apache.taverna.servicedescriptions.ServiceDescriptionRegistry;
+import org.apache.taverna.workbench.activityicons.ActivityIconManager;
+import org.apache.taverna.workbench.file.FileManager;
+import org.apache.taverna.workbench.file.events.ClosingDataflowEvent;
+import org.apache.taverna.workbench.file.events.FileManagerEvent;
+import org.apache.taverna.workbench.ui.views.contextualviews.activity.ActivityConfigurationDialog;
+import org.apache.taverna.scufl2.api.activity.Activity;
+import org.apache.taverna.scufl2.api.common.Scufl2Tools;
+import org.apache.taverna.scufl2.api.container.WorkflowBundle;
+import org.apache.taverna.scufl2.api.core.Processor;
+import org.apache.taverna.scufl2.api.core.Workflow;
+import org.apache.taverna.scufl2.api.profiles.ProcessorBinding;
+import org.apache.taverna.scufl2.api.profiles.Profile;
+
+@SuppressWarnings("serial")
+public abstract class ActivityConfigurationAction extends AbstractAction {
+	private static WeakHashMap<Activity, ActivityConfigurationDialog> configurationDialogs = new WeakHashMap<>();
+	private static DataflowCloseListener listener;
+
+	protected Activity activity;
+	private final ServiceDescriptionRegistry serviceDescriptionRegistry;
+
+	public ActivityConfigurationAction(Activity activity,
+			ActivityIconManager activityIconManager,
+			ServiceDescriptionRegistry serviceDescriptionRegistry) {
+		this.activity = activity;
+		this.serviceDescriptionRegistry = serviceDescriptionRegistry;
+		putValue(SMALL_ICON,
+				activityIconManager.iconForActivity(activity.getType()));
+	}
+
+	protected Activity getActivity() {
+		return activity;
+	}
+
+	protected ServiceDescription getServiceDescription() {
+		return serviceDescriptionRegistry.getServiceDescription(activity
+				.getType());
+	}
+
+	protected static void setDialog(Activity activity,
+			ActivityConfigurationDialog dialog, FileManager fileManager) {
+		if (listener == null) {
+			listener = new DataflowCloseListener();
+			/*
+			 * Ensure that the DataflowCloseListener is the first notified
+			 * listener. Otherwise you cannot save the configurations.
+			 */
+			List<Observer<FileManagerEvent>> existingListeners = fileManager
+					.getObservers();
+			fileManager.addObserver(listener);
+			for (Observer<FileManagerEvent> observer : existingListeners)
+				if (!observer.equals(listener)) {
+					fileManager.removeObserver(observer);
+					fileManager.addObserver(observer);
+				}
+		}
+		if (configurationDialogs.containsKey(activity)) {
+			ActivityConfigurationDialog currentDialog = configurationDialogs
+					.get(activity);
+			if (!currentDialog.equals(dialog) && currentDialog.isVisible())
+				currentDialog.setVisible(false);
+		}
+		configurationDialogs.put(activity, dialog);
+		dialog.setVisible(true);
+	}
+
+	public static void clearDialog(Activity activity) {
+		if (configurationDialogs.containsKey(activity)) {
+			ActivityConfigurationDialog currentDialog = configurationDialogs
+					.get(activity);
+			if (currentDialog.isVisible())
+				currentDialog.setVisible(false);
+			configurationDialogs.remove(activity);
+			currentDialog.dispose();
+		}
+	}
+
+	protected static void clearDialog(JDialog dialog) {
+		if (configurationDialogs.containsValue(dialog)) {
+			if (dialog.isVisible())
+				dialog.setVisible(false);
+			for (Activity activity : configurationDialogs.keySet())
+				if (configurationDialogs.get(activity).equals(dialog))
+					configurationDialogs.remove(activity);
+			dialog.dispose();
+		}
+	}
+
+	public static boolean closeDialog(Activity activity) {
+		boolean closeIt = true;
+		if (configurationDialogs.containsKey(activity)) {
+			ActivityConfigurationDialog currentDialog = configurationDialogs
+					.get(activity);
+			if (currentDialog.isVisible())
+				closeIt = currentDialog.closeDialog();
+			if (closeIt)
+				configurationDialogs.remove(activity);
+		}
+		return closeIt;
+	}
+
+	public static ActivityConfigurationDialog getDialog(Activity activity) {
+		return configurationDialogs.get(activity);
+	}
+
+	private static class DataflowCloseListener implements
+			Observer<FileManagerEvent> {
+		private Scufl2Tools scufl2Tools = new Scufl2Tools();
+
+		@Override
+		public void notify(Observable<FileManagerEvent> sender,
+				FileManagerEvent message) throws Exception {
+			if (message instanceof ClosingDataflowEvent) {
+				ClosingDataflowEvent closingDataflowEvent = (ClosingDataflowEvent) message;
+				if (closingDataflowEvent.isAbortClose())
+					return;
+				closingDataflow(closingDataflowEvent,
+						((ClosingDataflowEvent) message).getDataflow());
+			}
+		}
+
+		private void closingDataflow(ClosingDataflowEvent event,
+				WorkflowBundle bundle) {
+			Profile profile = bundle.getMainProfile();
+			for (Workflow workflow : bundle.getWorkflows())
+				for (Processor p : workflow.getProcessors()) {
+					ProcessorBinding processorBinding = scufl2Tools
+							.processorBindingForProcessor(p, profile);
+					Activity activity = processorBinding.getBoundActivity();
+					if (!closeDialog(activity))
+						event.setAbortClose(true);
+				}
+		}
+	}
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityContextualView.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityContextualView.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityContextualView.java
new file mode 100644
index 0000000..58323d6
--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/ActivityContextualView.java
@@ -0,0 +1,68 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.actions.activity;
+
+import org.apache.taverna.workbench.ui.views.contextualviews.ContextualView;
+import org.apache.taverna.scufl2.api.activity.Activity;
+import org.apache.taverna.scufl2.api.common.Scufl2Tools;
+import org.apache.taverna.scufl2.api.configurations.Configuration;
+
+/**
+ * A contextual view specific to an Activity. Concrete subclasses must
+ * initialise the view by calling {@link #initView()}.
+ * <p>
+ * The implementation provides a view based upon the properties set in the
+ * Configuration
+ * 
+ * @author Stuart Owen
+ * @author Ian Dunlop
+ * 
+ * @see Activity
+ * @see ContextualView
+ */
+@SuppressWarnings("serial")
+public abstract class ActivityContextualView extends ContextualView {
+	private Activity activity;
+	private Scufl2Tools scufl2Tools = new Scufl2Tools();
+
+	/**
+	 * Constructs an instance of the view.
+	 * <p>
+	 * The constructor parameter for the implementation of this class should
+	 * define the specific Activity type itself.
+	 * 
+	 * @param activity
+	 */
+	protected ActivityContextualView(Activity activity) {
+		super();
+		this.activity = activity;
+	}
+
+	public Activity getActivity() {
+		return activity;
+	}
+
+	public Configuration getConfigBean() {
+		return scufl2Tools.configurationFor(activity, activity.getParent());
+	}
+
+	@Override
+	public abstract void refreshView();
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/HTMLBasedActivityContextualView.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/HTMLBasedActivityContextualView.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/HTMLBasedActivityContextualView.java
new file mode 100644
index 0000000..1d649cf
--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/actions/activity/HTMLBasedActivityContextualView.java
@@ -0,0 +1,80 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.actions.activity;
+
+import static org.apache.taverna.lang.ui.HtmlUtils.buildTableOpeningTag;
+import static org.apache.taverna.lang.ui.HtmlUtils.createEditorPane;
+import static org.apache.taverna.lang.ui.HtmlUtils.getHtmlHead;
+import static org.apache.taverna.lang.ui.HtmlUtils.panelForHtml;
+
+import javax.swing.JComponent;
+import javax.swing.JEditorPane;
+
+import org.apache.taverna.workbench.configuration.colour.ColourManager;
+import org.apache.taverna.scufl2.api.activity.Activity;
+
+@SuppressWarnings("serial")
+public abstract class HTMLBasedActivityContextualView extends ActivityContextualView {
+	private static final String BEANSHELL_URI = "http://ns.taverna.org.uk/2010/activity/beanshell";
+	private static final String LOCALWORKER_URI = "http://ns.taverna.org.uk/2010/activity/localworker";
+	private JEditorPane editorPane;
+	private final ColourManager colourManager;
+
+	public HTMLBasedActivityContextualView(Activity activity, ColourManager colourManager) {
+		super(activity);
+		this.colourManager = colourManager;
+		initView();
+	}
+
+	@Override
+	public JComponent getMainFrame() {
+		editorPane = createEditorPane(buildHtml());
+		return panelForHtml(editorPane);
+	}
+
+	private String buildHtml() {
+		StringBuilder html = new StringBuilder(getHtmlHead(getBackgroundColour()));
+		html.append(buildTableOpeningTag());
+		html.append("<tr><th colspan=\"2\">").append(getViewTitle()).append("</th></tr>");
+		html.append(getRawTableRowsHtml()).append("</table>");
+		html.append("</body></html>");
+		return html.toString();
+	}
+
+	protected abstract String getRawTableRowsHtml();
+
+	public String getBackgroundColour() {
+		String activityType = getActivity().getType().toString();
+		if (LOCALWORKER_URI.equals(activityType))
+			if (getConfigBean().getJson().get("isAltered").booleanValue())
+				return (String) colourManager.getProperty(BEANSHELL_URI);
+		String colour = (String) colourManager.getProperty(activityType);
+		return colour == null ? "#ffffff" : colour;
+	}
+
+	/**
+	 * Update the html view with the latest information in the configuration
+	 * bean
+	 */
+	@Override
+	public void refreshView() {
+		editorPane.setText(buildHtml());
+	}
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/AddLayerFactorySPI.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/AddLayerFactorySPI.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/AddLayerFactorySPI.java
new file mode 100644
index 0000000..91aad6c
--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/AddLayerFactorySPI.java
@@ -0,0 +1,42 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.views.contextualviews;
+
+import java.net.URI;
+
+import javax.swing.Action;
+
+import org.apache.taverna.scufl2.api.core.Processor;
+
+/**
+ * SPI for adding dispatch stack layers to a processor, such as
+ * {@link org.apache.taverna.workflowmodel.processor.dispatch.layers.Loop}.
+ * <p>
+ * Buttons or similar will be added in the processor contextual view.
+ * 
+ * @author Stian Soiland-Reyes
+ */
+public interface AddLayerFactorySPI {
+	boolean canAddLayerFor(Processor proc);
+
+	Action getAddLayerActionFor(Processor proc);
+
+	boolean canCreateLayerClass(URI dispatchLayerType);
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/ContextualView.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/ContextualView.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/ContextualView.java
new file mode 100644
index 0000000..394f2a9
--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/ContextualView.java
@@ -0,0 +1,108 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.views.contextualviews;
+
+import static java.awt.BorderLayout.CENTER;
+
+import java.awt.BorderLayout;
+import java.awt.Frame;
+
+import javax.swing.Action;
+import javax.swing.JComponent;
+import javax.swing.JPanel;
+
+/**
+ * An abstract class defining the base container to hold a contextual view over
+ * Dataflow element.
+ * <p>
+ * The specific implementation of this class to support a given dataflow element
+ * needs to implement the {@link #getMainFrame()} and {@link #getViewTitle()}.
+ * <p>
+ * If a view is associated with an action handler to configure this component,
+ * then the {@link #getConfigureAction(Frame) getConfigureAction} handler must
+ * be over-ridden. If this returns null then the configure button is left
+ * disabled and it is not possible to configure the element.
+ * 
+ * @author Stuart Owen
+ * @author Ian Dunlop
+ * @author Alan R Williams
+ */
+@SuppressWarnings("serial")
+public abstract class ContextualView extends JPanel {
+	/**
+	 * When implemented, this method should define the main frame that is placed
+	 * in this container, and provides a static view of the Dataflow element.
+	 * 
+	 * @return a JComponent that represents the dataflow element.
+	 */
+	public abstract JComponent getMainFrame();
+
+	/**
+	 * @return a String providing a title for the view
+	 */
+	public abstract String getViewTitle();
+
+	/**
+	 * Allows the item to be configured, but returning an action handler that
+	 * will be invoked when selecting to configure. By default this is provided
+	 * by a button.
+	 * <p>
+	 * If there is no ability to configure the given item, then this should
+	 * return null.
+	 * 
+	 * @param owner
+	 *            the owning dialog to be used when displaying dialogues for
+	 *            configuration options
+	 * @return an action that allows the element being viewed to be configured.
+	 */
+	public Action getConfigureAction(Frame owner) {
+		return null;
+	}
+
+	/**
+	 * This <i>must</i> be called by any sub-classes after they have initialised
+	 * their own view since it gets their main panel and adds it to the main
+	 * contextual view. If you don't do this you will get a very empty frame
+	 * popping up!
+	 */
+	public void initView() {
+		setLayout(new BorderLayout());
+		add(getMainFrame(), CENTER);
+		setName(getViewTitle());
+	}
+
+	public abstract void refreshView();
+
+	public abstract int getPreferredPosition();
+
+	public static String getTextFromDepth(String kind, Integer depth) {
+		String labelText = "The last prediction said the " + kind;
+		if (depth == null) {
+			labelText += " would not transmit a value";
+		} else if (depth == -1) {
+			labelText += " was invalid/unpredicted";
+		} else if (depth == 0) {
+			labelText += " would carry a single value";
+		} else {
+			labelText += " would carry a list of depth " + depth;
+		}
+		return labelText;
+	}
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationDialog.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationDialog.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationDialog.java
new file mode 100644
index 0000000..372bba5
--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationDialog.java
@@ -0,0 +1,493 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.views.contextualviews.activity;
+
+import static java.awt.BorderLayout.SOUTH;
+import static java.awt.Cursor.DEFAULT_CURSOR;
+import static java.awt.Cursor.WAIT_CURSOR;
+import static java.awt.Cursor.getPredefinedCursor;
+import static java.lang.Math.max;
+import static javax.swing.JOptionPane.CANCEL_OPTION;
+import static javax.swing.JOptionPane.NO_OPTION;
+import static javax.swing.JOptionPane.YES_NO_CANCEL_OPTION;
+import static javax.swing.JOptionPane.YES_NO_OPTION;
+import static javax.swing.JOptionPane.YES_OPTION;
+import static javax.swing.JOptionPane.showConfirmDialog;
+import static org.apache.taverna.workbench.MainWindow.getMainWindow;
+import static org.apache.taverna.workbench.helper.Helper.showHelp;
+import static org.apache.taverna.workbench.ui.actions.activity.ActivityConfigurationAction.clearDialog;
+
+import java.awt.BorderLayout;
+import java.awt.Dimension;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ComponentAdapter;
+import java.awt.event.ComponentEvent;
+import java.awt.event.WindowAdapter;
+import java.awt.event.WindowEvent;
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import javax.swing.AbstractAction;
+import javax.swing.JButton;
+import javax.swing.JPanel;
+import javax.swing.border.EmptyBorder;
+
+import org.apache.taverna.lang.observer.Observable;
+import org.apache.taverna.lang.observer.Observer;
+import org.apache.taverna.lang.ui.DeselectingButton;
+import org.apache.taverna.workbench.edits.CompoundEdit;
+import org.apache.taverna.workbench.edits.Edit;
+import org.apache.taverna.workbench.edits.EditException;
+import org.apache.taverna.workbench.edits.EditManager;
+import org.apache.taverna.workbench.edits.EditManager.DataFlowRedoEvent;
+import org.apache.taverna.workbench.edits.EditManager.DataFlowUndoEvent;
+import org.apache.taverna.workbench.edits.EditManager.EditManagerEvent;
+import org.apache.taverna.workbench.helper.HelpEnabledDialog;
+import org.apache.taverna.workflow.edits.AddChildEdit;
+import org.apache.taverna.workflow.edits.AddProcessorInputPortEdit;
+import org.apache.taverna.workflow.edits.AddProcessorOutputPortEdit;
+import org.apache.taverna.workflow.edits.ChangeDepthEdit;
+import org.apache.taverna.workflow.edits.ChangeGranularDepthEdit;
+import org.apache.taverna.workflow.edits.ChangeJsonEdit;
+import org.apache.taverna.workflow.edits.RemoveChildEdit;
+import org.apache.taverna.workflow.edits.RemoveProcessorInputPortEdit;
+import org.apache.taverna.workflow.edits.RemoveProcessorOutputPortEdit;
+import org.apache.taverna.workflow.edits.RenameEdit;
+
+import org.apache.log4j.Logger;
+
+import org.apache.taverna.scufl2.api.activity.Activity;
+import org.apache.taverna.scufl2.api.common.Scufl2Tools;
+import org.apache.taverna.scufl2.api.configurations.Configuration;
+import org.apache.taverna.scufl2.api.container.WorkflowBundle;
+import org.apache.taverna.scufl2.api.core.Processor;
+import org.apache.taverna.scufl2.api.core.Workflow;
+import org.apache.taverna.scufl2.api.port.ActivityPort;
+import org.apache.taverna.scufl2.api.port.InputActivityPort;
+import org.apache.taverna.scufl2.api.port.InputProcessorPort;
+import org.apache.taverna.scufl2.api.port.OutputActivityPort;
+import org.apache.taverna.scufl2.api.port.OutputProcessorPort;
+import org.apache.taverna.scufl2.api.profiles.ProcessorBinding;
+import org.apache.taverna.scufl2.api.profiles.ProcessorInputPortBinding;
+import org.apache.taverna.scufl2.api.profiles.ProcessorOutputPortBinding;
+import org.apache.taverna.scufl2.api.profiles.Profile;
+
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+@SuppressWarnings("serial")
+public class ActivityConfigurationDialog extends HelpEnabledDialog {
+	private enum PortType {
+		INPUT, OUTPUT
+	}
+	
+	protected static Logger logger = Logger.getLogger(ActivityConfigurationDialog.class);
+	private static final Scufl2Tools scufl2Tools = new Scufl2Tools();
+
+	private final EditManager editManager;
+
+	private Activity activity;
+	private ActivityConfigurationPanel panel;
+	protected WorkflowBundle owningWorkflowBundle;
+	protected Processor owningProcessor;
+	private Observer<EditManagerEvent> observer;
+	Dimension minimalSize = null;
+	Dimension buttonPanelSize = null;
+	JPanel buttonPanel;
+	protected JButton applyButton;
+
+	public ActivityConfigurationDialog(Activity a, ActivityConfigurationPanel p,
+			EditManager editManager) {
+		super(getMainWindow(), "Configuring " + a.getClass().getSimpleName(),
+				false, null);
+		this.activity = a;
+		this.panel = p;
+		this.editManager = editManager;
+
+		owningWorkflowBundle = activity.getParent().getParent();
+		owningProcessor = findProcessor(a);
+
+		setTitle(getRelativeName(owningWorkflowBundle, activity));
+		setDefaultCloseOperation(DO_NOTHING_ON_CLOSE);
+		setLayout(new BorderLayout());
+
+		add(panel, BorderLayout.CENTER);
+
+		buttonPanel = new JPanel(new FlowLayout(FlowLayout.RIGHT));
+		buttonPanel.setBorder(new EmptyBorder(5, 20, 5, 5));
+
+		JButton helpButton = new DeselectingButton("Help", new AbstractAction() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				showHelp(panel);
+			}
+		});
+		buttonPanel.add(helpButton);
+
+		applyButton = new DeselectingButton("Apply", new AbstractAction() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				/*
+				 * For the moment it always does an apply as what should be
+				 * happening is that the apply button only becomes available
+				 * when the configuration has changed. However, many
+				 * configuration panels are not set up to detected changes
+				 */
+				// if (panel.isConfigurationChanged()) {
+				if (checkPanelValues())
+					applyConfiguration();
+				// } else {
+				// logger.info("Ignoring apply");
+				// }
+			}
+		});
+		buttonPanel.add(applyButton);
+
+		JButton closeButton = new DeselectingButton("Close", new AbstractAction() {
+			@Override
+			public void actionPerformed(ActionEvent e) {
+				closeDialog();
+			}
+		});
+		buttonPanel.add(closeButton);
+
+		add(buttonPanel, SOUTH);
+
+		this.addWindowListener(new WindowAdapter() {
+			@Override
+			public void windowOpened(WindowEvent e) {
+				requestFocusInWindow();
+				panel.whenOpened();
+			}
+
+			@Override
+			public void windowClosing(WindowEvent e) {
+				closeDialog();
+			}
+		});
+		pack();
+		minimalSize = getSize();
+		setLocationRelativeTo(null);
+		setResizable(true);
+		addComponentListener(new ComponentAdapter() {
+			@Override
+			public void componentResized(ComponentEvent e) {
+				int newWidth = max(getWidth(), minimalSize.width);
+				int newHeight = max(getHeight(), minimalSize.height);
+				setSize(new Dimension(newWidth, newHeight));
+			}
+		});
+
+		observer = new Observer<EditManagerEvent>() {
+			@Override
+			public void notify(Observable<EditManagerEvent> sender, EditManagerEvent message)
+					throws Exception {
+				logger.info("sender is a " + sender.getClass().getCanonicalName());
+				logger.info("message is a " + message.getClass().getCanonicalName());
+				Edit<?> edit = message.getEdit();
+				logger.info(edit.getClass().getCanonicalName());
+				considerEdit(message, edit);
+			}
+		};
+		editManager.addObserver(observer);
+	}
+
+	private boolean checkPanelValues() {
+		boolean result = false;
+		try {
+			setCursor(getPredefinedCursor(WAIT_CURSOR));
+			result = panel.checkValues();
+		} finally {
+			setCursor(getPredefinedCursor(DEFAULT_CURSOR));
+		}
+		return result;
+	}
+
+	private void considerEdit(EditManagerEvent message, Edit<?> edit) {
+		// boolean result = false;
+		if (edit instanceof CompoundEdit) {
+			for (Edit<?> subEdit : ((CompoundEdit) edit).getChildEdits())
+				considerEdit(message, subEdit);
+			return;
+		}
+
+		Object subject = edit.getSubject();
+		if (subject == owningProcessor) {
+			// panel.reevaluate();
+			setTitle(getRelativeName(owningWorkflowBundle, activity));
+		} else if (subject == owningWorkflowBundle) {
+			for (Workflow workflow : owningWorkflowBundle.getWorkflows())
+				if (!workflow.getProcessors().contains(owningProcessor))
+					clearDialog(activity);
+		} else if (subject == activity) {
+			if (message instanceof DataFlowUndoEvent) {
+				logger.info("undo of activity edit found");
+				panel.refreshConfiguration();
+			} else if (message instanceof DataFlowRedoEvent) {
+				logger.info("redo of activity edit found");
+				panel.refreshConfiguration();
+			}
+		}
+	}
+
+	protected void configureActivity(ObjectNode json, List<ActivityPortConfiguration> inputPorts,
+			List<ActivityPortConfiguration> outputPorts) {
+		configureActivity(owningWorkflowBundle, activity, json, inputPorts, outputPorts);
+	}
+
+	public void configureActivity(WorkflowBundle workflowBundle, Activity activity,
+			ObjectNode json, List<ActivityPortConfiguration> inputPorts,
+			List<ActivityPortConfiguration> outputPorts) {
+		try {
+			List<Edit<?>> editList = new ArrayList<Edit<?>>();
+			Profile profile = activity.getParent();
+			List<ProcessorBinding> processorBindings = scufl2Tools
+					.processorBindingsToActivity(activity);
+			Configuration configuration = scufl2Tools.configurationFor(activity, profile);
+			editList.add(new ChangeJsonEdit(configuration, json));
+
+			configurePorts(activity, editList, processorBindings, inputPorts, PortType.INPUT);
+			configurePorts(activity, editList, processorBindings, outputPorts, PortType.OUTPUT);
+			editManager.doDataflowEdit(workflowBundle, new CompoundEdit(editList));
+		} catch (IllegalStateException | EditException e) {
+			logger.error(e);
+		}
+	}
+
+	private void configurePorts(Activity activity, List<Edit<?>> editList,
+			List<ProcessorBinding> processorBindings,
+			List<ActivityPortConfiguration> portDefinitions, PortType portType) {
+		Set<ActivityPort> ports = new HashSet<>();
+		for (ActivityPort activityPort : portType == PortType.INPUT ? activity
+				.getInputPorts() : activity.getOutputPorts())
+			ports.add(activityPort);
+		for (ActivityPortConfiguration portDefinition : portDefinitions) {
+			String portName = portDefinition.getName();
+			int portDepth = portDefinition.getDepth();
+			int granularPortDepth = portDefinition.getGranularDepth();
+			ActivityPort activityPort = portDefinition.getActivityPort();
+			if (activityPort == null) {
+				// no activity port so add a new one
+				if (portType == PortType.INPUT)
+					createInputPort(activity, editList, processorBindings, portDefinition);
+				else
+					createOutputPort(activity, editList, processorBindings, portDefinition);
+			} else {
+				ports.remove(activityPort);
+				// check if port has changed
+				for (ProcessorBinding processorBinding : processorBindings)
+					if (portType == PortType.INPUT)
+						for (ProcessorInputPortBinding portBinding : processorBinding
+								.getInputPortBindings()) {
+							if (!portBinding.getBoundActivityPort().equals(
+									activityPort))
+								continue;
+							InputProcessorPort processorPort = portBinding
+									.getBoundProcessorPort();
+							if (!activityPort.getName().equals(portName))
+								// port name changed
+								if (processorPort.getName().equals(activityPort.getName()))
+									// default mapping so change processor port
+									editList.add(new RenameEdit<>(processorPort, portName));
+							if (!processorPort.getDepth().equals(portDepth))
+								// port depth changed
+								editList.add(new ChangeDepthEdit<>(
+										processorPort, portDepth));
+						}
+					else
+						for (ProcessorOutputPortBinding portBinding : processorBinding
+								.getOutputPortBindings()) {
+							if (!portBinding.getBoundActivityPort().equals(
+									activityPort))
+								continue;
+							OutputProcessorPort processorPort = portBinding
+									.getBoundProcessorPort();
+							if (!activityPort.getName().equals(portName))
+								// port name changed
+								if (processorPort.getName().equals(
+										activityPort.getName()))
+									// default mapping so change processor port
+									editList.add(new RenameEdit<>(
+											processorPort, portName));
+							if (!processorPort.getDepth().equals(portDepth))
+								// port depth changed
+								editList.add(new ChangeDepthEdit<>(
+										processorPort, portDepth));
+							if (!processorPort.getGranularDepth().equals(
+									granularPortDepth))
+								// port granular depth changed
+								editList.add(new ChangeGranularDepthEdit<>(
+										processorPort, granularPortDepth));
+						}
+				if (!activityPort.getName().equals(portName))
+					// port name changed
+					editList.add(new RenameEdit<>(activityPort, portName));
+				if (!activityPort.getDepth().equals(portDepth))
+					// port depth changed
+					editList.add(new ChangeDepthEdit<>(activityPort, portDepth));
+				if (activityPort instanceof OutputActivityPort) {
+					OutputActivityPort outputActivityPort = (OutputActivityPort) activityPort;
+					Integer granularDepth = outputActivityPort
+							.getGranularDepth();
+					if (granularDepth == null
+							|| !granularDepth.equals(granularPortDepth))
+						// granular port depth changed
+						editList.add(new ChangeGranularDepthEdit<>(
+								outputActivityPort, granularPortDepth));
+				}
+			}
+		}
+
+		// remove any unconfigured ports
+		for (ActivityPort activityPort : ports) {
+			// remove processor ports and bindings
+			for (ProcessorBinding processorBinding : processorBindings)
+				if (portType.equals(PortType.INPUT))
+					for (ProcessorInputPortBinding portBinding : processorBinding
+							.getInputPortBindings()) {
+						if (portBinding.getBoundActivityPort().equals(activityPort)) {
+							editList.add(new RemoveProcessorInputPortEdit(processorBinding
+									.getBoundProcessor(), portBinding.getBoundProcessorPort()));
+							editList.add(new RemoveChildEdit<>(processorBinding,
+									portBinding));
+						}
+					}
+				else
+					for (ProcessorOutputPortBinding portBinding : processorBinding
+							.getOutputPortBindings())
+						if (portBinding.getBoundActivityPort().equals(activityPort)) {
+							editList.add(new RemoveProcessorOutputPortEdit(processorBinding
+									.getBoundProcessor(), portBinding.getBoundProcessorPort()));
+							editList.add(new RemoveChildEdit<>(processorBinding,
+									portBinding));
+						}
+			// remove activity port
+			editList.add(new RemoveChildEdit<Activity>(activity, activityPort));
+		}
+	}
+
+	private void createInputPort(Activity activity, List<Edit<?>> editList,
+			List<ProcessorBinding> processorBindings,
+			ActivityPortConfiguration portDefinition) {
+		InputActivityPort actPort = new InputActivityPort(null,
+				portDefinition.getName());
+		actPort.setDepth(portDefinition.getDepth());
+		// add port to activity
+		editList.add(new AddChildEdit<>(activity, actPort));
+		for (ProcessorBinding processorBinding : processorBindings) {
+			Processor processor = processorBinding.getBoundProcessor();
+			// add a new processor port
+			InputProcessorPort procPort = new InputProcessorPort();
+			procPort.setName(portDefinition.getName());
+			procPort.setDepth(portDefinition.getDepth());
+			editList.add(new AddProcessorInputPortEdit(processor, procPort));
+			// add a new port binding
+			ProcessorInputPortBinding binding = new ProcessorInputPortBinding();
+			binding.setBoundProcessorPort(procPort);
+			binding.setBoundActivityPort(actPort);
+			editList.add(new AddChildEdit<>(processorBinding, binding));
+		}
+	}
+
+	private void createOutputPort(Activity activity, List<Edit<?>> editList,
+			List<ProcessorBinding> processorBindings,
+			ActivityPortConfiguration portDefinition) {
+		OutputActivityPort actPort = new OutputActivityPort(null,
+				portDefinition.getName());
+		actPort.setDepth(portDefinition.getDepth());
+		actPort.setGranularDepth(portDefinition.getGranularDepth());
+		// add port to activity
+		editList.add(new AddChildEdit<Activity>(activity, actPort));
+		for (ProcessorBinding processorBinding : processorBindings) {
+			Processor processor = processorBinding.getBoundProcessor();
+			// add a new processor port
+			OutputProcessorPort procPort = new OutputProcessorPort();
+			procPort.setName(portDefinition.getName());
+			procPort.setDepth(portDefinition.getDepth());
+			procPort.setGranularDepth(portDefinition.getGranularDepth());
+			editList.add(new AddProcessorOutputPortEdit(processor, procPort));
+			// add a new port binding
+			ProcessorOutputPortBinding binding = new ProcessorOutputPortBinding();
+			binding.setBoundProcessorPort(procPort);
+			binding.setBoundActivityPort(actPort);
+			editList.add(new AddChildEdit<>(processorBinding, binding));
+		}
+	}
+
+	protected static Processor findProcessor(Activity activity) {
+		for (ProcessorBinding processorBinding : scufl2Tools
+				.processorBindingsToActivity(activity))
+			return processorBinding.getBoundProcessor();
+		return null;
+	}
+
+	public static String getRelativeName(WorkflowBundle workflowBundle, Activity activity) {
+		StringBuilder relativeName = new StringBuilder("");
+		if (workflowBundle != null) {
+			Workflow workflow = workflowBundle.getMainWorkflow();
+			if (workflow != null) {
+				relativeName.append(workflow.getName());
+				relativeName.append(":");
+			}
+		}
+		Processor processor = findProcessor(activity);
+		if (processor != null)
+			relativeName.append(processor.getName());
+		return relativeName.toString();
+	}
+
+	public boolean closeDialog() {
+		if (panel.isConfigurationChanged()) {
+			String relativeName = getRelativeName(owningWorkflowBundle, activity);
+			if (checkPanelValues()) {
+				int answer = showConfirmDialog(this,
+						"Do you want to save the configuration of " + relativeName + "?",
+						relativeName, YES_NO_CANCEL_OPTION);
+				if (answer == YES_OPTION) {
+					applyConfiguration();
+				} else if (answer == CANCEL_OPTION) {
+					return false;
+				}
+			} else if (showConfirmDialog(
+					this,
+					"New configuration could not be saved. Do you still want to close?",
+					relativeName, YES_NO_OPTION) == NO_OPTION)
+				return false;
+		}
+		panel.whenClosed();
+		clearDialog(activity);
+		return true;
+	}
+
+	private void applyConfiguration() {
+		panel.noteConfiguration();
+		configureActivity(panel.getJson(), panel.getInputPorts(),
+				panel.getOutputPorts());
+		panel.refreshConfiguration();
+	}
+
+	@Override
+	public void dispose() {
+		super.dispose();
+		editManager.removeObserver(observer);
+	}
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationPanel.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationPanel.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationPanel.java
new file mode 100644
index 0000000..b0a6fa9
--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityConfigurationPanel.java
@@ -0,0 +1,230 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.views.contextualviews.activity;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import javax.swing.JPanel;
+
+import org.apache.log4j.Logger;
+
+import org.apache.taverna.commons.services.ActivityTypeNotFoundException;
+import org.apache.taverna.commons.services.InvalidConfigurationException;
+import org.apache.taverna.commons.services.ServiceRegistry;
+import org.apache.taverna.scufl2.api.activity.Activity;
+import org.apache.taverna.scufl2.api.common.Scufl2Tools;
+import org.apache.taverna.scufl2.api.configurations.Configuration;
+import org.apache.taverna.scufl2.api.port.ActivityPort;
+import org.apache.taverna.scufl2.api.port.InputActivityPort;
+import org.apache.taverna.scufl2.api.port.OutputActivityPort;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.node.ObjectNode;
+
+/**
+ * @author alanrw
+ */
+@SuppressWarnings("serial")
+public abstract class ActivityConfigurationPanel extends JPanel {
+	private static final Logger logger = Logger.getLogger(ActivityConfigurationPanel.class);
+	private final static Scufl2Tools scufl2Tools = new Scufl2Tools();
+
+	// protected final URITools uriTools = new URITools();
+	private final Activity activity;
+	private final Configuration configuration;
+	private final List<ActivityPortConfiguration> inputPorts;
+	private final List<ActivityPortConfiguration> outputPorts;
+	protected ObjectNode json;
+
+	public ActivityConfigurationPanel(Activity activity) {
+		this(activity, scufl2Tools.configurationFor(activity,
+				activity.getParent()));
+	}
+
+	public ActivityConfigurationPanel(Activity activity,
+			Configuration configuration) {
+		this.activity = activity;
+		this.configuration = configuration;
+		inputPorts = new ArrayList<>();
+		outputPorts = new ArrayList<>();
+	}
+
+	/**
+	 * Initializes the configuration panel. This method is also used to discard
+	 * any changes and reset the panel to its initial state. Subclasses should
+	 * implement this method to set up the panel and must call
+	 * <tt>super.initialise()</tt> first.
+	 */
+	protected void initialise() {
+		json = configuration.getJson().deepCopy();
+		inputPorts.clear();
+		for (InputActivityPort activityPort : activity.getInputPorts())
+			inputPorts.add(new ActivityPortConfiguration(activityPort));
+		outputPorts.clear();
+		for (OutputActivityPort activityPort : activity.getOutputPorts())
+			outputPorts.add(new ActivityPortConfiguration(activityPort));
+	}
+
+	public abstract boolean checkValues();
+
+	public abstract void noteConfiguration();
+
+	public boolean isConfigurationChanged() {
+		noteConfiguration();
+		if (portsChanged(inputPorts, activity.getInputPorts().size()))
+			return true;
+		if (portsChanged(outputPorts, activity.getOutputPorts().size()))
+			return true;
+		return !json.equals(configuration.getJson());
+	}
+
+	public Configuration getConfiguration() {
+		return configuration;
+	}
+
+	public ObjectNode getJson() {
+		return json;
+	}
+
+	protected void setJson(ObjectNode json) {
+		this.json = json;
+	}
+
+	public void refreshConfiguration() {
+		initialise();
+	}
+
+	public void whenOpened() {
+	}
+
+	public void whenClosed() {
+	}
+
+	/**
+	 * Convenience method for getting simple String property values.
+	 *
+	 * @param name
+	 *            the property name
+	 * @return the property value
+	 */
+	protected String getProperty(String name) {
+		JsonNode jsonNode = json.get(name);
+		if (jsonNode == null)
+			return null;
+		return json.get(name).asText();
+	}
+
+	/**
+	 * Convenience method for setting simple String property values.
+	 *
+	 * @param name
+	 *            the property name
+	 * @param value
+	 *            the property value
+	 */
+	protected void setProperty(String name, String value) {
+		json.put(name, value);
+	}
+
+	public List<ActivityPortConfiguration> getInputPorts() {
+		return inputPorts;
+	}
+
+	public List<ActivityPortConfiguration> getOutputPorts() {
+		return outputPorts;
+	}
+
+	protected void configureInputPorts(ServiceRegistry serviceRegistry) {
+		try {
+			Map<String, InputActivityPort> newInputPorts = new HashMap<>();
+			for (InputActivityPort port : serviceRegistry
+					.getActivityInputPorts(getActivity().getType(), getJson()))
+				newInputPorts.put(port.getName(), port);
+			List<ActivityPortConfiguration> inputPorts = getInputPorts();
+			for (ActivityPortConfiguration portConfig : new ArrayList<>(
+					inputPorts))
+				if (newInputPorts.containsKey(portConfig.getName())) {
+					InputActivityPort port = newInputPorts.remove(portConfig
+							.getName());
+					portConfig.setDepth(port.getDepth());
+				} else
+					inputPorts.remove(portConfig);
+			for (InputActivityPort newPort : newInputPorts.values())
+				inputPorts.add(new ActivityPortConfiguration(newPort.getName(),
+						newPort.getDepth()));
+		} catch (InvalidConfigurationException | ActivityTypeNotFoundException e) {
+			logger.warn("Error configuring input ports", e);
+		}
+	}
+
+	protected void configureOutputPorts(ServiceRegistry serviceRegistry) {
+		try {
+			Map<String, OutputActivityPort> newOutputPorts = new HashMap<>();
+			for (OutputActivityPort port : serviceRegistry
+					.getActivityOutputPorts(getActivity().getType(), getJson()))
+				newOutputPorts.put(port.getName(), port);
+			List<ActivityPortConfiguration> outputPorts = getOutputPorts();
+			for (ActivityPortConfiguration portConfig : new ArrayList<>(
+					outputPorts))
+				if (newOutputPorts.containsKey(portConfig.getName())) {
+					OutputActivityPort port = newOutputPorts.remove(portConfig
+							.getName());
+					portConfig.setDepth(port.getDepth());
+					portConfig.setGranularDepth(port.getGranularDepth());
+				} else
+					outputPorts.remove(portConfig);
+			for (OutputActivityPort newPort : newOutputPorts.values())
+				outputPorts.add(new ActivityPortConfiguration(
+						newPort.getName(), newPort.getDepth()));
+		} catch (InvalidConfigurationException | ActivityTypeNotFoundException e) {
+			logger.warn("Error configuring output ports", e);
+		}
+	}
+
+	private boolean portsChanged(List<ActivityPortConfiguration> portDefinitions, int ports) {
+		int checkedPorts = 0;
+		for (ActivityPortConfiguration portDefinition : portDefinitions) {
+			String portName = portDefinition.getName();
+			int portDepth = portDefinition.getDepth();
+			ActivityPort activityPort = portDefinition.getActivityPort();
+			if (activityPort == null)
+				// new port added
+				return true;
+			if (!activityPort.getName().equals(portName))
+				// port name changed
+				return true;
+			if (!activityPort.getDepth().equals(portDepth))
+				// port depth changed
+				return true;
+			checkedPorts++;
+		}
+		if (checkedPorts < ports)
+			// ports deleted
+			return true;
+		return false;
+	}
+
+	public Activity getActivity() {
+		return activity;
+	}
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityPortConfiguration.java
----------------------------------------------------------------------
diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityPortConfiguration.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityPortConfiguration.java
new file mode 100644
index 0000000..f3ea920
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+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ActivityPortConfiguration.java
@@ -0,0 +1,83 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.views.contextualviews.activity;
+
+import org.apache.taverna.scufl2.api.port.ActivityPort;
+
+/**
+ *
+ *
+ * @author David Withers
+ */
+public class ActivityPortConfiguration {
+
+	private ActivityPort activityPort;
+
+	private String name;
+
+	private int depth;
+
+	private int granularDepth;
+
+	public ActivityPortConfiguration(ActivityPort activityPort) {
+		this.activityPort = activityPort;
+		name = activityPort.getName();
+		depth = activityPort.getDepth();
+	}
+
+	public ActivityPortConfiguration(String name, int depth) {
+		this(name, depth, depth);
+	}
+
+	public ActivityPortConfiguration(String name, int depth, int granularDepth) {
+		this.name = name;
+		this.depth = depth;
+		this.granularDepth = granularDepth;
+	}
+
+	public ActivityPort getActivityPort() {
+		return activityPort;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public int getDepth() {
+		return depth;
+	}
+
+	public void setDepth(int depth) {
+		this.depth = depth;
+	}
+
+	public int getGranularDepth() {
+		return granularDepth;
+	}
+
+	public void setGranularDepth(int granularDepth) {
+		this.granularDepth = granularDepth;
+	}
+
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactory.java
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diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactory.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactory.java
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+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactory.java
@@ -0,0 +1,62 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.views.contextualviews.activity;
+
+import java.util.List;
+
+import org.apache.taverna.workbench.ui.views.contextualviews.ContextualView;
+
+/**
+ * Defines a factory class that when associated with a selected object creates a
+ * {@link ContextualView} for that selection.
+ * <p>
+ * This factory acts as an SPI to find {@link ContextualView}s for a given
+ * Activity and other workflow components.
+ * </p>
+ * 
+ * @author Stuart Owen
+ * @author Ian Dunlop
+ * @author Stian Soiland-Reyes
+ * 
+ * 
+ * @param <SelectionType>
+ *            - the selection type this factory is associated with
+ * 
+ * @see ContextualView
+ * @see ContextualViewFactoryRegistry
+ */
+public interface ContextualViewFactory<SelectionType> {
+	/**
+	 * @param selection
+	 *            - the object for which ContextualViews needs to be generated
+	 * @return instance of {@link ContextualView}
+	 */
+	public List<ContextualView> getViews(SelectionType selection);
+
+	/**
+	 * Used by the SPI system to find the correct factory that can handle the
+	 * given object type. 
+	 * 
+	 * @param selection
+	 * @return true if this factory relates to the given selection type
+	 * @see ContextualViewFactoryRegistry
+	 */
+	public boolean canHandle(Object selection);
+}

http://git-wip-us.apache.org/repos/asf/incubator-taverna-workbench/blob/a9a52bd5/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactoryRegistry.java
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diff --git a/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactoryRegistry.java b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactoryRegistry.java
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--- /dev/null
+++ b/taverna-contextual-views-api/src/main/java/org/apache/taverna/workbench/ui/views/contextualviews/activity/ContextualViewFactoryRegistry.java
@@ -0,0 +1,42 @@
+/*
+* Licensed to the Apache Software Foundation (ASF) under one
+* or more contributor license agreements. See the NOTICE file
+* distributed with this work for additional information
+* regarding copyright ownership. The ASF licenses this file
+* to you under the Apache License, Version 2.0 (the
+* "License"); you may not use this file except in compliance
+* with the License. You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing,
+* software distributed under the License is distributed on an
+* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+* KIND, either express or implied. See the License for the
+* specific language governing permissions and limitations
+* under the License.
+*/
+
+package org.apache.taverna.workbench.ui.views.contextualviews.activity;
+
+import java.util.List;
+
+/**
+ * A registry for discovering ActivityViewFactories for a given object,
+ * like an {@link org.apache.taverna.workflowmodel.processor.activity.Activity}.
+ *
+ * @author David Withers
+ */
+public interface ContextualViewFactoryRegistry {
+	/**
+	 * Discover and return the ContextualViewFactory associated to the provided
+	 * object. This is accomplished by returning the discovered
+	 * {@link ContextualViewFactory#canHandle(Object)} that returns true for
+	 * that Object.
+	 *
+	 * @param object
+	 * @return
+	 * @see ContextualViewFactory#canHandle(Object)
+	 */
+	public <T> List<ContextualViewFactory<? super T>> getViewFactoriesForObject(T object);
+}