bundles/org.simantics.views.swt.client/src/org/simantics/views/swt/client/impl/SWTTabFolder.java

   1 package org.simantics.views.swt.client.impl;
   2
   3 import java.util.HashSet;
   4 import java.util.List;
   5 import java.util.Set;
   6
   7 import org.eclipse.jface.viewers.ISelectionChangedListener;
   8 import org.eclipse.jface.viewers.ISelectionProvider;
   9 import org.eclipse.jface.viewers.SelectionChangedEvent;
  10 import org.eclipse.swt.SWT;
  11 import org.eclipse.swt.custom.CTabFolder;
  12 import org.eclipse.swt.custom.CTabItem;
  13 import org.eclipse.swt.widgets.Composite;
  14 import org.eclipse.swt.widgets.Control;
  15 import org.simantics.browsing.ui.swt.widgets.GraphExplorerComposite;
  16 import org.simantics.utils.ui.jface.BasePostSelectionProvider;
  17 import org.simantics.views.ViewUtils.LayoutBean;
  18 import org.simantics.views.swt.client.base.ISWTViewNode;
  19 import org.simantics.views.swt.client.base.SingleSWTViewNode;
  20
  21 public class SWTTabFolder extends SingleSWTViewNode<CTabFolder> {
  22
  23         private static final long serialVersionUID = -8003676031533344133L;
  24
  25         public List<String> childNames;
  26
  27         public LayoutBean layout;
  28
  29         final BasePostSelectionProvider selectionProvider = new BasePostSelectionProvider();
  30
  31         ISelectionChangedListener selectionListener = new ISelectionChangedListener() {
  32
  33                 @Override
  34                 public void selectionChanged(SelectionChangedEvent event) {
  35                         selectionProvider.firePostSelection(event.getSelection());
  36                 }
  37
  38         };
  39
  40         private CTabItem createItem(int index, CTabFolder folder, Control control) {
  41
  42                 CTabItem item = new CTabItem(folder, SWT.NONE, index);
  43                 item.setControl(control);
  44                 return item;
  45
  46         }
  47
  48         @Override
  49         public void createControls(Composite parent) {
  50                 control = new CTabFolder(parent, SWT.BOTTOM | SWT.FLAT);
  51                 setProperties();
  52                 createChildComposites();
  53                 updateFolder();
  54         }
  55
  56         protected void childrenChanged() {
  57             // FIXME: this is probably not what is intended, just modified it like this to get rid of the NPE it was producing.
  58             if (control != null && !control.isDisposed())
  59                 updateFolder();
  60         }
  61
  62         protected void updateFolder() {
  63
  64                 assert(childNames != null);
  65
  66             HashSet<Control> existing = new HashSet<Control>();
  67
  68             for(CTabItem c : control.getItems()) {
  69                 existing.add(c.getControl());
  70             }
  71
  72             int index = existing.size();
  73             boolean hasSomeSelectionProviders = false;
  74
  75             for(ISWTViewNode node : getChildComposites()) {
  76
  77                 Control c = node.getControl();
  78                 if(c != null && !existing.contains(c)) {
  79
  80                     CTabItem item = createItem(index, control, c);
  81                     item.setText(childNames.get(index++));
  82
  83                     for(Control c2 : getControls(item)) {
  84                         if(c2 instanceof GraphExplorerComposite) {
  85                             GraphExplorerComposite gec = (GraphExplorerComposite)c2;
  86                             ISelectionProvider sp = (ISelectionProvider)gec.getAdapter(ISelectionProvider.class);
  87                             sp.addSelectionChangedListener(selectionListener);
  88                             hasSomeSelectionProviders = true;
  89                         }
  90                     }
  91
  92                 }
  93             }
  94
  95             if(hasSomeSelectionProviders) {
  96                 // We use our combined selection provider
  97                 getSite().setSelectionProvider(selectionProvider);
  98             }
  99
 100             control.setSelection(0);
 101             control.update();
 102         }
 103
 104     Set<Control> getControls(CTabItem item) {
 105                 HashSet<Control> result = new HashSet<Control>();
 106                 forControl(item.getControl(), result);
 107                 return result;
 108         }
 109
 110         void forControl(Control control, HashSet<Control> controls) {
 111                 controls.add(control);
 112                 if(control instanceof Composite) {
 113                         Composite composite = (Composite)control;
 114                         for(Control child : composite.getChildren()) forControl(child, controls);
 115                 }
 116         }
 117
 118         public void synchronizeChildNames(List<String> childNames) {
 119
 120         }
 121
 122         final public void synchronizeLayout(LayoutBean layout) {
 123         }
 124
 125 }