Examples of org.eclipse.jface.viewers.TreeViewer

org.eclipse.jface.viewers.TreeViewer
A concrete viewer based on an SWT Tree control.
This class is not intended to be subclassed outside the viewer framework. It is designed to be instantiated with a pre-existing SWT tree control and configured with a domain-specific content provider, label provider, element filter (optional), and element sorter (optional).

As of 3.2, TreeViewer supports multiple equal elements (each with a different parent chain) in the tree. This support requires that clients enable the element map by calling setUseHashLookup(true).

Content providers for tree viewers must implement either the {@link ITreeContentProvider} interface, (as of 3.2) the{@link ILazyTreeContentProvider} interface, or (as of 3.3) the{@link ILazyTreePathContentProvider}. If the content provider is an ILazyTreeContentProvider or an ILazyTreePathContentProvider, the underlying Tree must be created using the {@link SWT#VIRTUAL} style bit, the tree viewer will notsupport sorting or filtering, and hash lookup must be enabled by calling {@link #setUseHashlookup(boolean)}.

Users setting up an editable tree with more than 1 column have to pass the SWT.FULL_SELECTION style bit
@noextend This class is not intended to be subclassed by clients.

  }


  protected TreeViewer createTreeViewer(Composite parent) {
    int style = SWT.BORDER | SWT.SINGLE;


    TreeViewer treeViewer = new TreeViewer(new Tree(parent, style));    
    treeViewer.setContentProvider(new WorkbenchContentProvider());
    treeViewer.setLabelProvider(WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider());
    treeViewer.setComparator(new NameSorter());
    treeViewer.addFilter(getFilter());    
    IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
    treeViewer.setInput(workspaceRoot);
    IStructuredSelection preSelection = getPreSelection(_workspaceSelection);
    if (preSelection != null) {
      treeViewer.setSelection(preSelection);
    }
    return treeViewer;
  }

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        schemaSection.setTextClient(schemaSectionToolBar);
        
        
        
        _treeViewer = new TreeViewer(tree);
        _treeViewer.setContentProvider(new WGASchemaDefinitionContentProvider());               
        _treeViewer.setLabelProvider(new WGASchemaDefinitionLabelProvider());        
        _treeViewer.setComparator(new ViewerComparator() {


            @Override

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  }


  protected TreeViewer createTreeViewer(Composite parent) {
    int style = SWT.BORDER | (false ? SWT.MULTI : SWT.SINGLE);


    TreeViewer tableViewer = new TreeViewer(new Tree(parent, style));
    tableViewer.setContentProvider(new WorkbenchContentProvider());
    tableViewer.setLabelProvider(WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider());
    tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
      public void selectionChanged(SelectionChangedEvent event) {
        updateOKStatus();
      }
    });


    tableViewer.setComparator(new NameSorter());
    tableViewer.addFilter((ViewerFilter) new WGADesignViewerFilter(null));
    IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
    tableViewer.setInput(workspaceRoot);
    return tableViewer;
  }

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  }


  protected TreeViewer createTreeViewer(Composite parent) {
    int style = SWT.BORDER | SWT.SINGLE;


    TreeViewer tableViewer = new TreeViewer(new Tree(parent, style));
    tableViewer.setContentProvider(new WorkbenchContentProvider());
    tableViewer.setLabelProvider(WorkbenchLabelProvider.getDecoratingWorkbenchLabelProvider());
    tableViewer.addSelectionChangedListener(new ISelectionChangedListener() {
      public void selectionChanged(SelectionChangedEvent event) {
        updateOKStatus();
      }
    });


    tableViewer.setComparator(new NameSorter());
    tableViewer.addFilter((ViewerFilter) new WGADesignViewerFilter(_selectedProject));


    IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
    tableViewer.setInput(workspaceRoot);
    return tableViewer;
  }

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      }
    }
  }


  private void expandNewsTableViewerGroups(boolean delayRedraw, ISelection oldSelection) {
    TreeViewer viewer = fNewsTableControl.getViewer();
    Tree tree = (Tree) viewer.getControl();


    /* Remember TopItem if required */
    TreeItem topItem = oldSelection.isEmpty() ? tree.getTopItem() : null;


    /* Expand All & Restore Selection with redraw false */
    if (delayRedraw)
      tree.getParent().setRedraw(false);
    try {
      viewer.expandAll();


      /* Restore selection if required */
      if (!oldSelection.isEmpty() && viewer.getSelection().isEmpty())
        viewer.setSelection(oldSelection, true);
      else if (topItem != null)
        tree.setTopItem(topItem);
    } finally {
      if (delayRedraw)
        tree.getParent().setRedraw(true);

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    }
  }


  /* TODO This is a Workaround until Eclipse Bug #159586 is fixed */
  private void stableSetInputToNewsTable(Object input, ISelection oldSelection) {
    TreeViewer viewer = fNewsTableControl.getViewer();
    Tree tree = (Tree) viewer.getControl();


    /* Set Input & Restore Selection with redraw false */
    tree.getParent().setRedraw(false);
    try {
      fNewsTableControl.setPartInput(input);


      /* Restore selection if required */
      if (oldSelection != null) {
        fNewsTableControl.setBlockNewsStateTracker(true);
        try {
          viewer.setSelection(oldSelection);
        } finally {
          fNewsTableControl.setBlockNewsStateTracker(false);
        }
      }

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    fFolderViewerContainer.setBackground(fParent.getDisplay().getSystemColor(SWT.COLOR_WHITE));


    Label separator = new Label(fFolderViewerContainer, SWT.SEPARATOR | SWT.HORIZONTAL);
    separator.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));


    fFolderViewer = new TreeViewer(fFolderViewerContainer, SWT.None);
    fFolderViewer.setAutoExpandLevel(2);
    fFolderViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    fFolderViewer.getTree().setData(ApplicationWorkbenchWindowAdvisor.FOCUSLESS_SCROLL_HOOK, new Object());


    fViewerHeight = fFolderViewer.getTree().getItemHeight() * 10 + 12;

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    }
    fViewer.getTree().setFocus();
  }


  private void createViewer(Composite container) {
    fViewer = new TreeViewer(container, SWT.FULL_SELECTION | SWT.BORDER | SWT.SINGLE);
    fViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));


    /* Content Provider */
    fViewer.setContentProvider(new ITreeContentProvider() {
      public Object[] getElements(Object inputElement) {

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    GridData lData = new GridData(GridData.FILL_BOTH);
    lData.grabExcessHorizontalSpace = true;
    lData.grabExcessVerticalSpace = true;
    mTree.setLayoutData(lData);


    mTreeViewer = new TreeViewer(mTree);
    mTreeViewer.setContentProvider(this);
    mTreeViewer.setLabelProvider(this);
    // mTreeViewer.setAutoExpandLevel(2);
    buildColumns();
  }

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    fFolderViewerContainer.setBackground(fParent.getDisplay().getSystemColor(SWT.COLOR_WHITE));


    Label separator = new Label(fFolderViewerContainer, SWT.SEPARATOR | SWT.HORIZONTAL);
    separator.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false));


    fFolderViewer = new TreeViewer(fFolderViewerContainer, SWT.None);
    fFolderViewer.setAutoExpandLevel(2);
    fFolderViewer.getTree().setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
    fFolderViewer.getTree().setData(ApplicationWorkbenchWindowAdvisor.FOCUSLESS_SCROLL_HOOK, new Object());


    fViewerHeight = fFolderViewer.getTree().getItemHeight() * 10 + 12;

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