]> gerrit.simantics Code Review - simantics/3d.git/blobdiff - org.simantics.plant3d/src/org/simantics/plant3d/dialog/ComponentSelectionDialog.java
Add units to ComponentSelectionDialog
[simantics/3d.git] / org.simantics.plant3d / src / org / simantics / plant3d / dialog / ComponentSelectionDialog.java
index 33d5882c2f45f57956a75be9b4b88158a96edce5..3cfe2a94c664d39558387b4b51a3824955d41956 100644 (file)
@@ -1,21 +1,33 @@
 package org.simantics.plant3d.dialog;
 
+import java.util.Collection;
 import java.util.HashSet;
 import java.util.List;
+import java.util.ListIterator;
 import java.util.Set;
 
 import org.eclipse.jface.dialogs.Dialog;
 import org.eclipse.jface.dialogs.IDialogConstants;
+import org.eclipse.jface.dialogs.IDialogSettings;
 import org.eclipse.jface.layout.GridDataFactory;
+import org.eclipse.jface.layout.GridLayoutFactory;
+import org.eclipse.jface.resource.JFaceResources;
+import org.eclipse.jface.resource.LocalResourceManager;
+import org.eclipse.jface.resource.ResourceLocator;
+import org.eclipse.jface.resource.ResourceManager;
 import org.eclipse.jface.viewers.ISelectionChangedListener;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ListViewer;
 import org.eclipse.jface.viewers.SelectionChangedEvent;
+import org.eclipse.jface.viewers.StructuredSelection;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.KeyAdapter;
 import org.eclipse.swt.events.KeyEvent;
+import org.eclipse.swt.events.SelectionAdapter;
+import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.ExpandBar;
@@ -23,43 +35,172 @@ import org.eclipse.swt.widgets.ExpandItem;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
+import org.simantics.Simantics;
+import org.simantics.db.Session;
 import org.simantics.db.exception.DatabaseException;
+import org.simantics.plant3d.Activator;
+import org.simantics.plant3d.ontology.Plant3D;
+import org.simantics.plant3d.scenegraph.EndComponent;
+import org.simantics.plant3d.scenegraph.InlineComponent;
+import org.simantics.plant3d.scenegraph.Nozzle;
+import org.simantics.plant3d.scenegraph.PipeRun;
+import org.simantics.plant3d.scenegraph.PipelineComponent;
+import org.simantics.plant3d.scenegraph.TurnComponent;
 import org.simantics.plant3d.scenegraph.controlpoint.PipeControlPoint.PositionType;
 import org.simantics.plant3d.utils.Item;
 import org.simantics.plant3d.utils.Item.Type;
 import org.simantics.plant3d.utils.P3DUtil;
 import org.simantics.utils.ui.ExceptionUtils;
 
-public class ComponentSelectionDialog extends Dialog implements ISelectionChangedListener{
+public class ComponentSelectionDialog extends Dialog implements ISelectionChangedListener {
+
+       private static final String DIALOG = "ComponentSelectionDialog"; //$NON-NLS-1$
+
+       private IDialogSettings dialogSettings;
+       
+       private double lengthFactor = 1.0;
+       private String lengthUnit = "m";
+
+       private ResourceManager resourceManager;
+
+       private String libUri;
 
        private Item selected;
        private Set<PositionType> allowed;
        private Set<PositionType> filterAllowed;
+       // private boolean positionAdjustment;
+       private PipelineComponent component;
+       private boolean insertAdjustable;
+       private boolean lenghtAdjustable;
+       private PositionType insertPosition = PositionType.NEXT;
+
        private Double angle;
        private Double length;
+       private Double rotationAngle;
+
+       private String name;
        
+       private Text nameText;
+
+       // In-line component
        private Text lengthText;
+       // Turn component
        private Text angleText;
-       
+       // Rotated In-line, or turn component.
+       private Text rotationAngleText;
+
+       // Input for new PipeRun
        private Double diameter;
+       private Double thickness;
        private Double turnRadius;
-       
+
        private Text diameterText;
+       private Text thicknessText;
        private Text turnRadiusText;
        
+       // Validation message label
+       private Label validationLabel;
+
+       // Position selection
+       private Button startButton;
+       private Button middleButton;
+       private Button endButton;
+
        private boolean inlineSplit = false;
-       
-       
-       public ComponentSelectionDialog(Shell parentShell, Set<PositionType> allowed) {
+
+       ListViewer inlineViewer;
+       ListViewer turnViewer;
+       ListViewer endViewer;
+
+       private Set<String> usedNames;
+
+       public ComponentSelectionDialog(Shell parentShell, Set<PositionType> allowed, PipelineComponent component) {
+               this(parentShell, allowed, component, Plant3D.URIs.Builtin);
+       }
+
+       public ComponentSelectionDialog(Shell parentShell, Set<PositionType> allowed, PipelineComponent component,
+                       String libUri) {
                super(parentShell);
                this.allowed = allowed;
+               this.component = component;
                filterAllowed = new HashSet<PositionType>();
+               insertAdjustable = component instanceof InlineComponent ? ((InlineComponent) component).isVariableLength()
+                               : false;
+               lenghtAdjustable = false;
+               this.libUri = libUri;
+
+               usedNames = new HashSet<>();
+
+               setShellStyle(getShellStyle() | SWT.RESIZE);
+
+               IDialogSettings settings = Activator.getDefault().getDialogSettings();
+               dialogSettings = settings.getSection(DIALOG);
+               if (dialogSettings == null)
+                       dialogSettings = settings.addNewSection(DIALOG);
+               
+               if (component.getNext() != null && component.getPrevious() != null)
+                       insertPosition = PositionType.PREVIOUS;
        }
        
+       private void copyPipeRunParameters() {
+               PipeRun run = component.getPipeRun();
+               if (component.getNext() == null && component.getAlternativePipeRun() != null)
+                       run = component.getAlternativePipeRun();
+               
+               if (run == null)
+                       return;
+               
+               diameter = run.getPipeDiameter();
+               thickness = run.getPipeThickness();
+               turnRadius = run.getTurnRadius();
+               
+               diameterText.setText(Double.toString(diameter * lengthFactor));
+               thicknessText.setText(Double.toString(thickness * lengthFactor));
+               turnRadiusText.setText(Double.toString(turnRadius * lengthFactor));
+       }
+
+       public void setLengthFactor(double lengthFactor) {
+               this.lengthFactor = lengthFactor;
+       }
+
+       public void setLengthUnit(String lengthUnit) {
+               this.lengthUnit = lengthUnit;
+       }
+
+       @Override
+       protected IDialogSettings getDialogBoundsSettings() {
+               return dialogSettings;
+       }
+
+       @Override
+       protected void configureShell(Shell newShell) {
+               super.configureShell(newShell);
+               newShell.setText("Create pipeline component");
+       }
+
+       public void addUsedNames(Collection<String> names) {
+               usedNames.addAll(names);
+       }
+
+       protected List<Item> getItems(Class<?> c, String libUri) throws DatabaseException {
+               Session session = Simantics.getSession();
+               if (InlineComponent.class.equals(c)) {
+                       return P3DUtil.getInlines(session, libUri);
+               } else if (TurnComponent.class.equals(c)) {
+                       return P3DUtil.getTurns(session, libUri);
+               } else if (EndComponent.class.equals(c)) {
+                       return P3DUtil.getEnds(session, libUri);
+               } else {
+                       return null;
+               }
+       }
+
        @Override
        protected Control createDialogArea(Composite parent) {
+               resourceManager = new LocalResourceManager(JFaceResources.getResources(), parent);
+
                Composite composite = new Composite(parent, SWT.NONE);
-               GridLayout layout = new GridLayout(2,false);
+               GridLayout layout = new GridLayout(3, false);
                layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN);
                layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN);
                layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING);
@@ -67,6 +208,9 @@ public class ComponentSelectionDialog extends Dialog implements ISelectionChange
                composite.setLayout(layout);
                composite.setLayoutData(new GridData(GridData.FILL_BOTH));
                applyDialogFont(composite);
+
+               // Grid layout data for fields that grab horizontal space
+               final GridDataFactory horizFillData = GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.TOP);
                
                // TODO : we need better classification than inline,turn, and end:
                // * fixed length inlines
@@ -75,94 +219,186 @@ public class ComponentSelectionDialog extends Dialog implements ISelectionChange
                // * variable length inlines (input for length)
                // * variable angle turns (input for angle)
                // * ends
-               
+
                List<Item> ends = null;
                List<Item> turns = null;
                List<Item> inlines = null;
                try {
-                       ends = P3DUtil.getEnds();
-                       turns= P3DUtil.getTurns();
-                       inlines = P3DUtil.getInlines();
+                       ends = getItems(EndComponent.class, libUri);
+                       turns = getItems(TurnComponent.class, libUri);
+                       inlines = getItems(InlineComponent.class, libUri);
                } catch (DatabaseException e) {
                        Label label = new Label(composite, SWT.NONE);
                        label.setText("Cannot load pipeline components: " + e.getMessage());
                        ExceptionUtils.logError(e);
                        return composite;
                }
+               ends = P3DUtil.filterUserComponents(ends);
+               turns = P3DUtil.filterUserComponents(turns);
+               inlines = P3DUtil.filterUserComponents(inlines);
+
+               ExpandBar expandBar = new ExpandBar(composite, SWT.V_SCROLL);
+
+               boolean isOpen = component.getNext() == null || component.getPrevious() == null;
+               if (!inlines.isEmpty()) {
+                       if (!isOpen) {
+                               // Remove variable length pipe from options
+                               ListIterator<Item> it = inlines.listIterator();
+                               while (it.hasNext()) {
+                                       Item item = it.next();
+                                       if (item.isVariable())
+                                               it.remove();
+                               }
+                       }
+                       
+                       inlineViewer = createItemList(expandBar, inlines, "Inline");
+               }
+
+               // Only allow elbows and ends to be added to open ends of the pipelines
+               if (isOpen) {
+                       if (!turns.isEmpty()) {
+                               turnViewer = createItemList(expandBar, turns, "Elbow");
+                       }
+                       
+                       if (!ends.isEmpty()) {
+                               turnViewer = createItemList(expandBar, ends, "End");
+                       }
+               }
+
+               GridDataFactory.fillDefaults().grab(true, true).align(SWT.FILL, SWT.FILL).span(3, 1).applyTo(expandBar);
+               GridDataFactory.fillDefaults().grab(true, true).minSize(300, 500).hint(300, 500).applyTo(composite);
+
+               // If there is only one item in the ExpandBar, expand it by default to avoid unnecessary clicks
+               ExpandItem[] expandBarItems = expandBar.getItems();
+               if (expandBarItems.length == 1) {
+                       expandBarItems[0].setExpanded(true);
+               }
+
+               Label label = new Label(composite, SWT.NONE);
+               label.setText("Position");
+               Composite buttonComposite = new Composite(composite, SWT.NONE);
+               startButton = new Button(buttonComposite, SWT.TOGGLE);
+               middleButton = new Button(buttonComposite, SWT.TOGGLE);
+               endButton = new Button(buttonComposite, SWT.TOGGLE);
+               startButton.setImage(resourceManager.createImage(
+                               ResourceLocator.imageDescriptorFromBundle(Activator.PLUGIN_ID, "icons/insert_start.png").get()));
+               middleButton.setImage(resourceManager.createImage(
+                               ResourceLocator.imageDescriptorFromBundle(Activator.PLUGIN_ID, "icons/insert_middle.png").get()));
+               endButton.setImage(resourceManager.createImage(
+                               ResourceLocator.imageDescriptorFromBundle(Activator.PLUGIN_ID, "icons/insert_end.png").get()));
+               startButton.setToolTipText("Overlapping insert");
+               middleButton.setToolTipText("Cutting insert");
+               endButton.setToolTipText("Adding insert");
+               horizFillData.copy().span(2, 1).applyTo(buttonComposite);
+               GridLayoutFactory.fillDefaults().numColumns(3).applyTo(buttonComposite);
+
+               startButton.setSelection(insertPosition == PositionType.PREVIOUS);
+               middleButton.setSelection(insertPosition == PositionType.SPLIT);
+               endButton.setSelection(insertPosition == PositionType.NEXT);
                
-               ExpandBar expandBar = new ExpandBar(composite, SWT.NONE);
-               
-               
-               ExpandItem inlineItem = new ExpandItem(expandBar, SWT.NONE);
-               inlineItem.setText("Inline");
-               ListViewer inlineViewer = new ListViewer(expandBar);
-               inlineViewer.setLabelProvider(new ComponentLabelProvider());
-               inlineViewer.setContentProvider(new ComponentContentProvider());
-               
-               ExpandItem turnItem = new ExpandItem(expandBar, SWT.NONE);
-               turnItem.setText("Turn");
-               ListViewer turnViewer = new ListViewer(expandBar);
-               turnViewer.setLabelProvider(new ComponentLabelProvider());
-               turnViewer.setContentProvider(new ComponentContentProvider());
-               
-               ExpandItem endItem = new ExpandItem(expandBar, SWT.NONE);
-               endItem.setText("End");
-               ListViewer endViewer = new ListViewer(expandBar);
-               endViewer.setLabelProvider(new ComponentLabelProvider());
-               endViewer.setContentProvider(new ComponentContentProvider());
-               
-               
-               inlineItem.setControl(inlineViewer.getList());
-               turnItem.setControl(turnViewer.getList());
-               endItem.setControl(endViewer.getList());
-               
-               inlineViewer.setInput(inlines);
-               turnViewer.setInput(turns);
-               endViewer.setInput(ends);
-               
-               inlineItem.setHeight(inlineViewer.getList().computeSize(SWT.DEFAULT, SWT.DEFAULT).y);
-               turnItem.setHeight(turnViewer.getList().computeSize(SWT.DEFAULT, SWT.DEFAULT).y);
-               endItem.setHeight(endViewer.getList().computeSize(SWT.DEFAULT, SWT.DEFAULT).y);
-               
-               inlineViewer.addSelectionChangedListener(this);
-               turnViewer.addSelectionChangedListener(this);
-               endViewer.addSelectionChangedListener(this);
-               
-               GridDataFactory.fillDefaults().grab(true, true).align(SWT.FILL, SWT.FILL).span(2, 1).applyTo(expandBar);
-               GridDataFactory.fillDefaults().minSize(500, 500).hint(500, 500).applyTo(composite);
-               
+               startButton.setEnabled(false);
+               middleButton.setEnabled(false);
+               endButton.setEnabled(false);
+
+               startButton.addSelectionListener(new SelectionAdapter() {
+                       @Override
+                       public void widgetSelected(SelectionEvent e) {
+                               updateInsertPosition(PositionType.PREVIOUS);
+                       }
+               });
+
+               middleButton.addSelectionListener(new SelectionAdapter() {
+                       @Override
+                       public void widgetSelected(SelectionEvent e) {
+                               updateInsertPosition(PositionType.SPLIT);
+                       }
+               });
+               endButton.addSelectionListener(new SelectionAdapter() {
+                       @Override
+                       public void widgetSelected(SelectionEvent e) {
+                               updateInsertPosition(PositionType.NEXT);
+                       }
+               });
                
-               Label label = new Label(composite, SWT.NONE);
+               if (!hasInsertPosition()) {
+                       label.setVisible(false);
+                       buttonComposite.setVisible(false);
+               }
+
+               label = new Label(composite, SWT.NONE);
+               label.setText("Name");
+               nameText = new Text(composite, SWT.SINGLE | SWT.BORDER);
+               label = new Label(composite, SWT.NONE);
+               label.setText("");
+
+               label = new Label(composite, SWT.NONE);
                label.setText("Length");
-               lengthText = new Text(composite, SWT.SINGLE|SWT.BORDER);
+               lengthText = new Text(composite, SWT.SINGLE | SWT.BORDER);
                label = new Label(composite, SWT.NONE);
-               label.setText("Angle");
-               angleText = new Text(composite, SWT.SINGLE|SWT.BORDER);
+               label.setText(lengthUnit);
                
+               label = new Label(composite, SWT.NONE);
+               label.setText("Angle");
+               angleText = new Text(composite, SWT.SINGLE | SWT.BORDER);
+               label = new Label(composite, SWT.NONE);
+               label.setText("\u00b0");
+
+               label = new Label(composite, SWT.NONE);
+               label.setText("Rotation angle");
+               rotationAngleText = new Text(composite, SWT.SINGLE | SWT.BORDER);
+               label = new Label(composite, SWT.NONE);
+               label.setText("\u00b0");
+
                label = new Label(composite, SWT.NONE);
                label.setText("Diameter");
-               diameterText = new Text(composite, SWT.SINGLE|SWT.BORDER);
+               diameterText = new Text(composite, SWT.SINGLE | SWT.BORDER);
+               label = new Label(composite, SWT.NONE);
+               label.setText(lengthUnit);
+               
+               label = new Label(composite, SWT.NONE);
+               label.setText("Wall thickness");
+               thicknessText = new Text(composite, SWT.SINGLE | SWT.BORDER);
                label = new Label(composite, SWT.NONE);
-               label.setText("Turn Radius");
-               turnRadiusText = new Text(composite, SWT.SINGLE|SWT.BORDER);
+               label.setText(lengthUnit);
                
+               label = new Label(composite, SWT.NONE);
+               label.setText("Elbow radius");
+               turnRadiusText = new Text(composite, SWT.SINGLE | SWT.BORDER);
+               label = new Label(composite, SWT.NONE);
+               label.setText(lengthUnit);
+               
+               validationLabel = new Label(composite, SWT.NONE);
+               validationLabel.setText("");
+
                lengthText.setEnabled(false);
                angleText.setEnabled(false);
+               rotationAngleText.setEnabled(false);
                turnRadiusText.setEnabled(false);
                diameterText.setEnabled(false);
+               thicknessText.setEnabled(false);
+
+               copyPipeRunParameters();
+
+               nameText.addKeyListener(new KeyAdapter() {
+                       @Override
+                       public void keyReleased(KeyEvent e) {
+                               name = nameText.getText();
+                               validate();
+                       }
+               });
                
                lengthText.addKeyListener(new KeyAdapter() {
                        @Override
                        public void keyReleased(KeyEvent e) {
                                try {
-                                       length = Double.parseDouble(lengthText.getText());
+                                       length = Double.parseDouble(lengthText.getText()) / lengthFactor;
                                } catch (NumberFormatException err) {
                                        length = null;
                                }
                                validate();
                        }
                });
-               
+
                angleText.addKeyListener(new KeyAdapter() {
                        @Override
                        public void keyReleased(KeyEvent e) {
@@ -174,12 +410,24 @@ public class ComponentSelectionDialog extends Dialog implements ISelectionChange
                                validate();
                        }
                });
-               
+
+               rotationAngleText.addKeyListener(new KeyAdapter() {
+                       @Override
+                       public void keyReleased(KeyEvent e) {
+                               try {
+                                       rotationAngle = Double.parseDouble(rotationAngleText.getText());
+                               } catch (NumberFormatException err) {
+                                       rotationAngle = null;
+                               }
+                               validate();
+                       }
+               });
+
                diameterText.addKeyListener(new KeyAdapter() {
                        @Override
                        public void keyReleased(KeyEvent e) {
                                try {
-                                       diameter = Double.parseDouble(diameterText.getText());
+                                       diameter = Double.parseDouble(diameterText.getText()) / lengthFactor;
                                } catch (NumberFormatException err) {
                                        diameter = null;
                                }
@@ -187,98 +435,263 @@ public class ComponentSelectionDialog extends Dialog implements ISelectionChange
                        }
                });
                
+               thicknessText.addKeyListener(new KeyAdapter() {
+                       @Override
+                       public void keyReleased(KeyEvent e) {
+                               try {
+                                       thickness = Double.parseDouble(thicknessText.getText()) / lengthFactor;
+                               } catch (NumberFormatException err) {
+                                       thickness = null;
+                               }
+                               validate();
+                       }
+               });
+
                turnRadiusText.addKeyListener(new KeyAdapter() {
                        @Override
                        public void keyReleased(KeyEvent e) {
                                try {
-                                       turnRadius = Double.parseDouble(turnRadiusText.getText());
+                                       turnRadius = Double.parseDouble(turnRadiusText.getText()) / lengthFactor;
                                } catch (NumberFormatException err) {
                                        turnRadius = null;
                                }
                                validate();
                        }
                });
+
+               horizFillData.applyTo(nameText);
+               horizFillData.applyTo(lengthText);
+               horizFillData.applyTo(angleText);
+               horizFillData.applyTo(rotationAngleText);
+               horizFillData.applyTo(diameterText);
+               horizFillData.applyTo(thicknessText);
+               horizFillData.applyTo(turnRadiusText);
                
-               GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.TOP).applyTo(lengthText);
-               GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.TOP).applyTo(angleText);
-               GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.TOP).applyTo(diameterText);
-               GridDataFactory.fillDefaults().grab(true, false).align(SWT.FILL, SWT.TOP).applyTo(turnRadiusText);
-               
+               GridDataFactory.fillDefaults().span(3, 1).align(SWT.END, SWT.END).grab(true, false).applyTo(validationLabel);
+
                if (!allowed.contains(PositionType.NEXT) && !allowed.contains(PositionType.PREVIOUS)) {
-                       turnViewer.getList().setEnabled(false);
-                       endViewer.getList().setEnabled(false);
+                       if (turnViewer != null)
+                               turnViewer.getList().setEnabled(false);
+                       if (endViewer != null)
+                               endViewer.getList().setEnabled(false);
                        inlineSplit = true;
                }
-               
+
                return composite;
        }
-       
-       
+
+       private ListViewer createItemList(ExpandBar expandBar, List<Item> items, String name) {
+               ExpandItem expandItem = new ExpandItem(expandBar, SWT.NONE);
+               expandItem.setText(name);
+               ListViewer viewer = new ListViewer(expandBar);
+               viewer.setLabelProvider(new ComponentLabelProvider());
+               viewer.setContentProvider(new ComponentContentProvider());
+               
+               expandItem.setControl(viewer.getList());
+               viewer.setInput(items);
+               expandItem.setHeight(viewer.getList().computeSize(SWT.DEFAULT, SWT.DEFAULT).y);
+               viewer.addSelectionChangedListener(this);
+               return viewer;
+       }
+
+       private boolean hasInsertPosition() {
+               return component.getNext() == null || component.getPrevious() == null;
+       }
+
+       private void updateInsertPosition(PositionType type) {
+               if (insertPosition == type)
+                       return;
+               startButton.setSelection(type == PositionType.PREVIOUS);
+               middleButton.setSelection(type == PositionType.SPLIT);
+               endButton.setSelection(type == PositionType.NEXT);
+               insertPosition = type;
+       }
+
        @Override
        public void selectionChanged(SelectionChangedEvent event) {
-               IStructuredSelection sel = (IStructuredSelection)event.getSelection();
-               selected = (Item)sel.getFirstElement();
-               validate();                     
+               IStructuredSelection sel = (IStructuredSelection) event.getSelection();
+               Item i = (Item) sel.getFirstElement();
+               if (i != null) {
+                       selected = i;
+                       if (inlineViewer != null && event.getSource() == inlineViewer) {
+                               clearSelection(turnViewer);
+                               clearSelection(endViewer);
+                       } else if (turnViewer != null && event.getSource() == turnViewer) {
+                               clearSelection(inlineViewer);
+                               clearSelection(endViewer);
+                       } else if (endViewer != null && event.getSource() == endViewer) {
+                               clearSelection(inlineViewer);
+                               clearSelection(turnViewer);
+                       }
+                       
+                       name = generateUniqueName(selected.getName());
+                       nameText.setText(name);
+                       
+                       validate();
+               }
        }
-       
+
+       private void clearSelection(ListViewer possibleListViewer) {
+               if (possibleListViewer != null)
+                       possibleListViewer.setSelection(new StructuredSelection());
+       }
+
        private void validate() {
                filterAllowed.clear();
                Set<PositionType> filterAllowed = new HashSet<PositionType>();
                boolean ok = true;
-               if (selected.isCode())// TODO : instead of disabling the button, we should filter the content.
+               String msg = null;
+               
+               if (name.isEmpty() || usedNames.contains(name)) {
                        ok = false;
+                       if (msg == null) {
+                               if (name.isEmpty())
+                                       msg = "Please provide a valid name";
+                               else
+                                       msg = "Name \"" + name + "\" is already in use";
+                       }
+               }
                
-               if (selected.isVariable()) {
-                       if (selected.getType() == Type.INLINE) {
-                               filterAllowed.add(PositionType.NEXT);
-                               filterAllowed.add(PositionType.PREVIOUS);
-                               if (inlineSplit) {
+               if (selected == null) {
+                       ok = false;
+               } else if (selected.isCode()) {// TODO : instead of disabling the button, we should filter the content.
+                       ok = false;
+               } else {
+                       lenghtAdjustable = ((selected.getType() == Type.INLINE)
+                                       && (selected.isVariable() || selected.isModifiable()));
+                       
+                       if (!hasInsertPosition()) {
+                               // We are inserting to a fully connected variable length component
+                               // only allow insertion within the component
+                               startButton.setEnabled(false);
+                               middleButton.setEnabled(false);
+                               endButton.setEnabled(false);
+                               updateInsertPosition(PositionType.PREVIOUS);
+                       } else if (insertAdjustable) {
+                               switch (selected.getType()) {
+                               case END:
+                                       startButton.setEnabled(false);
+                                       middleButton.setEnabled(false);
+                                       endButton.setEnabled(true);
+                                       updateInsertPosition(PositionType.NEXT);
+                                       break;
+                               case INLINE:
+                                       if (!selected.isVariable()) {
+                                               startButton.setEnabled(true);
+                                               middleButton.setEnabled(true);
+                                               endButton.setEnabled(true);
+                                       } else {
+                                               startButton.setEnabled(false);
+                                               middleButton.setEnabled(false);
+                                               endButton.setEnabled(true);
+                                               updateInsertPosition(PositionType.NEXT);
+                                       }
+                                       break;
+                               case NOZZLE:
+                                       startButton.setEnabled(false);
+                                       middleButton.setEnabled(false);
+                                       endButton.setEnabled(true);
+                                       updateInsertPosition(PositionType.NEXT);
+                                       break;
+                               case TURN:
+                                       startButton.setEnabled(false);
+                                       middleButton.setEnabled(true);
+                                       endButton.setEnabled(true);
+                                       if (insertPosition == PositionType.PREVIOUS)
+                                               updateInsertPosition(PositionType.NEXT);
+                                       break;
+                               case EQUIPMENT:
+                                       throw new RuntimeException("Expected component, got equipment " + selected);
+                               }
+                       } else if (lenghtAdjustable) {
+                               if (component instanceof InlineComponent) {
+                                       startButton.setEnabled(true);
+                                       middleButton.setEnabled(true);
+                                       endButton.setEnabled(true);
+                               } else if (component instanceof TurnComponent) {
+                                       startButton.setEnabled(false);
+                                       middleButton.setEnabled(true);
+                                       endButton.setEnabled(true);
+                                       if (insertPosition == PositionType.PREVIOUS)
+                                               updateInsertPosition(PositionType.NEXT);
+                               } else if (component instanceof EndComponent || component instanceof Nozzle) {
+                                       startButton.setEnabled(false);
+                                       middleButton.setEnabled(false);
+                                       endButton.setEnabled(true);
+                                       updateInsertPosition(PositionType.NEXT);
+                               }
+                       } else {
+                               startButton.setEnabled(false);
+                               middleButton.setEnabled(false);
+                               endButton.setEnabled(true);
+                       }
+                       if (selected.isVariable() || selected.isModifiable()) {
+                               if (selected.getType() == Type.INLINE) {
+                                       filterAllowed.add(PositionType.NEXT);
+                                       filterAllowed.add(PositionType.PREVIOUS);
+                                       if (inlineSplit && selected.isVariable()) {
+                                               lengthText.setEnabled(false);
+                                               angleText.setEnabled(false);
+                                               rotationAngleText.setEnabled(selected.isRotated());
+                                               ok = false;
+                                               if (msg == null) msg = "Cannot split a straight pipe with a straight pipe";
+                                       } else {
+                                               lengthText.setEnabled(true);
+                                               angleText.setEnabled(false);
+                                               rotationAngleText.setEnabled(selected.isRotated());
+                                               if (length == null || length <= 0.0) {
+                                                       ok = false;
+                                                       if (msg == null) msg = "Please provide a valid length";
+                                               }
+                                       }
+                               } else if (selected.getType() == Type.TURN) {
+                                       filterAllowed.add(PositionType.NEXT);
+                                       filterAllowed.add(PositionType.PREVIOUS);
                                        lengthText.setEnabled(false);
-                                       angleText.setEnabled(false);
-                                       ok = false;
-                                       
+                                       angleText.setEnabled(true);
+                                       rotationAngleText.setEnabled(true);
+                                       if (angle == null) {
+                                               ok = false;
+                                               if (msg == null) msg = "Please provide a turn angle";
+                                       }
                                } else {
-                                       lengthText.setEnabled(true);
+                                       // this should not happen, since end components should not have variable, or
+                                       // modifiable flag.
+                                       lengthText.setEnabled(false);
                                        angleText.setEnabled(false);
-                                       if (length == null)
-                                               ok = false;
+                                       rotationAngleText.setEnabled(false);
+
                                }
-                       } else if (selected.getType() == Type.TURN) {
-                               filterAllowed.add(PositionType.NEXT);
-                               filterAllowed.add(PositionType.PREVIOUS);
-                               lengthText.setEnabled(false);
-                               angleText.setEnabled(true);
-                               if (angle == null)
-                                       ok = false;
                        } else {
-                               // this should not happen
                                lengthText.setEnabled(false);
                                angleText.setEnabled(false);
+                               rotationAngleText.setEnabled(selected.getType() == Type.TURN || selected.isRotated());
                        }
-               } else {
-                       lengthText.setEnabled(false);
-                       angleText.setEnabled(false);                    
-               }
-               if (selected.isSizeChange()) {
-                       filterAllowed.add(PositionType.NEXT);
-                       filterAllowed.add(PositionType.PREVIOUS);
-                       if (inlineSplit) {
-                               turnRadiusText.setEnabled(false);
-                               diameterText.setEnabled(false);
-                               ok = false;
-                       } else {
+
+                       if (selected.isSizeChange()) {
                                turnRadiusText.setEnabled(true);
                                diameterText.setEnabled(true);
-                               if (diameter == null || turnRadius == null)
+                               thicknessText.setEnabled(true);
+                               if (diameter == null || diameter <= 0.0) {
+                                       ok = false;
+                                       if (msg == null) msg = "Please provide a valid diameter";
+                               }
+                               if (turnRadius == null || diameter != null && turnRadius < diameter / 2) {
+                                       ok = false;
+                                       if (msg == null) msg = "Please provide a valid turn radius";
+                               }
+                               if (thickness == null || thickness < 0.0 || diameter != null && thickness >= diameter / 2) {
                                        ok = false;
+                                       if (msg == null) msg = "Please provide a valid wall thickness";
+                               }
+                       } else {
+                               turnRadiusText.setEnabled(false);
+                               diameterText.setEnabled(false);
+                               thicknessText.setEnabled(false);
                        }
-                       
-               } else {
-                       turnRadiusText.setEnabled(false);
-                       diameterText.setEnabled(false);
-               }
-               if (!selected.isSizeChange() && !selected.isVariable()) {
-                       switch (selected.getType()) {
+
+                       if (!selected.isVariable()) {
+                               switch (selected.getType()) {
                                case END:
                                        filterAllowed.add(PositionType.NEXT);
                                        filterAllowed.add(PositionType.PREVIOUS);
@@ -293,40 +706,74 @@ public class ComponentSelectionDialog extends Dialog implements ISelectionChange
                                case TURN:
                                        filterAllowed.add(PositionType.NEXT);
                                        filterAllowed.add(PositionType.PREVIOUS);
+                               }
                        }
                }
-               
                for (PositionType t : filterAllowed) {
                        if (allowed.contains(t))
                                this.filterAllowed.add(t);
                }
-       
-               getButton(OK).setEnabled(ok); 
+
+               validationLabel.setText(msg != null ? msg : "");
+               validationLabel.requestLayout();
+               
+               getButton(OK).setEnabled(ok);
        }
-       
+
+       private String generateUniqueName(String name) {
+               int i = 1;
+               String newName;
+               while (usedNames.contains((newName = name + "_" + i)))
+                       i++;
+               return newName;
+       }
+
        public Item getSelected() {
                return selected;
        }
        
+       public String getName() {
+               return name;
+       }
+
        public Double getAngle() {
                return angle;
        }
-       
+
        public Double getLength() {
                return length;
        }
-       
+
+       public Double getRotationAngle() {
+               return rotationAngle;
+       }
+
        public Double getDiameter() {
                return diameter;
        }
-       
+
        public Double getTurnRadius() {
                return turnRadius;
        }
-       
+
        public Set<PositionType> filterAllowed() {
                return filterAllowed;
        }
-       
+
+       public PositionType getInsertPosition() {
+               return insertPosition;
+       }
+
+       public boolean isInsertAdjustable() {
+               return insertAdjustable;
+       }
+
+       public boolean isLenghtAdjustable() {
+               return lenghtAdjustable;
+       }
+
+       public Double getThickness() {
+               return thickness;
+       }
 
 }