Nebula ColumnBrowser

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Introduction

A widget that displays a tree structure a la mac in miller columns (look at http://en.wikipedia.org/wiki/Miller_Columns).

Usage

ColumnBrowserWidget

The widget itself contains the following method :

   public ColumnBrowserWidget(final Composite parent, final int style)

Constructor of the widget

   public void addSelectionListener(final SelectionListener listener)

• Add a selection listener

   public void clear(final boolean needPacking)

• Remove all data of the widget

   public ColumnItem getSelection()

• Get the ColumnItem selected (or null if none)

   public void removeSelectionListener(final SelectionListener listener)

• Remove a selection listener

   public void select(final ColumnItem item)

• Select a given item

Column item

The elements displayed in the widget are called ColumnItem

   public ColumnItem(final ColumnBrowserWidget widget)

• Create an item and associate it to a given widget

   public ColumnItem(final ColumnBrowserWidget widget, final int index)

• Create an item is at a zero-based given position

   public ColumnItem(final ColumnItem parent)

• Create a item that is a child of another ColumnItem

   public ColumnItem(final ColumnItem parent, final int index)

• Create a item that is a child of another ColumnItem at a zero-based given position

   public void remove(final ColumnItem item)

• Remove a child of the current item

   public void remove(final int index)

• Remove a child of the current item

   public void removeAll()

• Remove all children of the current item

   public ColumnItem getItem(final int index)

• Get a children at a given position

   public int getItemCount()

• Get the number of children of the current item

   public ColumnItem[] getItems()

• Get all children of the current item

   public ColumnBrowserWidget getParent()

• Get the widget that is the parent of the current item

   public ColumnItem getParentItem()

• Get the parent of the current item, or null if there is not

   public int indexOf(final ColumnItem item)

• Returns the position of a children

You can notice that the behaviour of this widget is very similar to the couple Tree/TreeItem.

Example

An example called ColumnsSnippet.java is located in the plugin org.eclipse.nebula.widgets.opal.columnbrowser.snippets.

This example is also available here : ColumnsSnippet.java