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

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