Examples of org.eclipse.ui.forms.widgets.ExpandableComposite$ExpandableLayout

org.eclipse.ui.forms.widgets.ExpandableComposite
This composite is capable of expanding or collapsing a single client that is its direct child. The composite renders an expansion toggle affordance (according to the chosen style), and a title that also acts as a hyperlink (can be selected and is traversable). The client is layed out below the title when expanded, or hidden when collapsed.
The widget can be instantiated as-is, or subclassed to modify some aspects of it.
Since 3.1, left/right arrow keys can be used to control the expansion state. If several expandable composites are created in the same parent, up/down arrow keys can be used to traverse between them. Expandable text accepts mnemonics and mnemonic activation will toggle the expansion state.
While expandable composite recognize that different styles can be used to render the title bar, and even defines the constants for these styles (TITLE_BAR and SHORT_TITLE_BAR the actual painting is done in the subclasses. @see Section @since 3.0

    }
    return null;
  }


  protected ExpandableComposite createStyleSection(Composite parent, String label, int nColumns) {
    ExpandableComposite excomposite = new ExpandableComposite(parent, SWT.NONE, ExpandableComposite.TWISTIE | ExpandableComposite.CLIENT_INDENT);
    excomposite.setText(label);
    excomposite.setExpanded(false);
    excomposite.setFont(JFaceResources.getFontRegistry().getBold(JFaceResources.DIALOG_FONT));
    excomposite.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, false, nColumns, 1));
    excomposite.addExpansionListener(new ExpansionAdapter() {
      public void expansionStateChanged(ExpansionEvent e) {
        expandedStateChanged((ExpandableComposite) e.getSource());
      }
    });
    fExpandables.add(excomposite);

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    makeScrollableCompositeAware(excomposite);
    return excomposite;
  }


  protected Composite createStyleSectionWithContentComposite(Composite parent, String label, int nColumns) {
    ExpandableComposite excomposite = new ExpandableComposite(parent, SWT.NONE, ExpandableComposite.TWISTIE | ExpandableComposite.CLIENT_INDENT);
    excomposite.setText(label);
    excomposite.setExpanded(false);
    excomposite.setFont(JFaceResources.getFontRegistry().getBold(JFaceResources.DIALOG_FONT));
    excomposite.setLayoutData(new GridData(GridData.FILL, GridData.FILL, true, false, nColumns, 1));
    excomposite.addExpansionListener(new ExpansionAdapter() {
      public void expansionStateChanged(ExpansionEvent e) {
        expandedStateChanged((ExpandableComposite) e.getSource());
      }
    });
    fExpandables.add(excomposite);
    makeScrollableCompositeAware(excomposite);


    Composite inner = new Composite(excomposite, SWT.NONE);
    inner.setFont(excomposite.getFont());
    inner.setLayout(new GridLayout(nColumns, false));
    excomposite.setClient(inner);
    return inner;
  }

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    return null;
  }


  protected void storeSectionExpansionStates(IDialogSettings section) {
    for (int i = 0; i < fExpandables.size(); i++) {
      ExpandableComposite comp = (ExpandableComposite) fExpandables.get(i);
      section.put(SETTINGS_EXPANDED + String.valueOf(i), comp.isExpanded());
    }
  }

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    }
  }


  protected void restoreSectionExpansionStates(IDialogSettings settings) {
    for (int i= 0; i < fExpandables.size(); i++) {
      ExpandableComposite excomposite= (ExpandableComposite) fExpandables.get(i);
      if (settings == null) {
        excomposite.setExpanded(i == 0); // only expand the first node by default
      } else {
        excomposite.setExpanded(settings.getBoolean(SETTINGS_EXPANDED + String.valueOf(i)));
      }
    }
  }

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    layout.verticalSpacing = 0;
  }


  private Composite resetPanel( Composite panel )
  {
    ExpandableComposite pc = (ExpandableComposite) panel.getParent();
    panel.dispose();
    panel = toolkit.createComposite( pc );
    pc.setClient( panel );
    TableWrapLayout layout = new TableWrapLayout();
    panel.setLayout( layout );
    return panel;
  }

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    }




    protected ExpandableComposite createExpandableSection( Composite parent, String label, int nColumns )
    {
        ExpandableComposite excomposite = new ExpandableComposite( parent, SWT.NONE, ExpandableComposite.TWISTIE
            | ExpandableComposite.CLIENT_INDENT );
        excomposite.setText( label );
        excomposite.setExpanded( false );
        excomposite.setFont( JFaceResources.getFontRegistry().getBold( JFaceResources.DIALOG_FONT ) );
        excomposite.setLayoutData( new GridData( GridData.FILL, GridData.FILL, true, false, nColumns, 1 ) );
        excomposite.addExpansionListener( new ExpansionAdapter()
        {
            public void expansionStateChanged( ExpansionEvent e )
            {
                ExpandableComposite excomposite = ( ExpandableComposite ) e.getSource();
                excomposite.getParent().setSize( excomposite.getParent().computeSize( SWT.DEFAULT, SWT.DEFAULT ) );
            }
        } );
        return excomposite;
    }

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        }
    }


    private  void createAnnotationList(Composite parent) {
        ExpandableComposite exp = new ExpandableComposite(parent, SWT.NONE,
                ExpandableComposite.TREE_NODE
                | ExpandableComposite.COMPACT
                | ExpandableComposite.EXPANDED
//                | ExpandableComposite.NO_TITLE
//                | ExpandableComposite.FOCUS_TITLE
//                | ExpandableComposite.TITLE_BAR
//                | ExpandableComposite.LEFT_TEXT_CLIENT_ALIGNMENT
                //| ExpandableComposite.LEFT_TEXT_CLIENT_ALIGNMENT
                );
        exp.addExpansionListener(expansionListener);
        exp.setText("Navigation");
        annotationList = new List(exp, SWT.V_SCROLL | SWT.H_SCROLL | SWT.BORDER);


        GridData data = new GridData(GridData.FILL_HORIZONTAL);
        exp.setLayoutData(data);
        exp.setClient(annotationList);
        exp.setBackground(parent.getBackground());
        exp.setFont(JFaceResources.getDialogFont());
        annotationList.setFont(JFaceResources.getDialogFont());
        annotationList.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent evnt) {
                selectInEditor(false);

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    return WidgetFactory.builder(toolkit).createExpandableComposite(parent);
  }
  
  public ExpandableComposite createExpandableComposite(Composite parent, int style) {
    if (toolkit == null) {
      return new ExpandableComposite(parent, style);
    } else {
      return toolkit.createExpandableComposite(parent, style);
    }
  }

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    return WidgetFactory.builder(toolkit).createExpandableComposite(parent, style);
  }
  
  public ExpandableComposite createExpandableComposite(Composite parent, int style, int expansionStyle) {
    if (toolkit == null) {
      return new ExpandableComposite(parent, style, expansionStyle);
    } else {
      ExpandableComposite ec = new ExpandableComposite(parent, style | toolkit.getOrientation(),
          expansionStyle);
      ec.setMenu(parent.getMenu());
      toolkit.adapt(ec, true, true);
      return ec;
    }
  }

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    }




    protected ExpandableComposite createExpandableSection( Composite parent, String label, int nColumns )
    {
        ExpandableComposite excomposite = new ExpandableComposite( parent, SWT.NONE, ExpandableComposite.TWISTIE
            | ExpandableComposite.CLIENT_INDENT );
        excomposite.setText( label );
        excomposite.setExpanded( false );
        excomposite.setFont( JFaceResources.getFontRegistry().getBold( JFaceResources.DIALOG_FONT ) );
        excomposite.setLayoutData( new GridData( GridData.FILL, GridData.FILL, true, false, nColumns, 1 ) );
        excomposite.addExpansionListener( new ExpansionAdapter()
        {
            public void expansionStateChanged( ExpansionEvent e )
            {
                ExpandableComposite excomposite = ( ExpandableComposite ) e.getSource();
                excomposite.getParent().setSize( excomposite.getParent().computeSize( SWT.DEFAULT, SWT.DEFAULT ) );
            }
        } );
        return excomposite;
    }

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