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Nebula ColumnBrowser

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Introduction

ColumnBrowser.png

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

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