Eclipse Cookbook

10.3. Adding Items to Coolbars

Problem

You’ve created a coolbar and you want to add items to it.

Solution

Create CoolItem objects, passing a CoolBar object to their constructors. Use the CoolItem objects’ setControl methods to add ToolBar objects to them.

Discussion

To add items such as toolbars to coolbars, you use coolbar items. Here’s a selection of the most useful CoolItem methods:

void addSelectionListener(SelectionListener listener)

Adds the listener to the collection of listeners that will be notified when the item is selected

Point computeSize(int wHint, int hHint)

Returns the preferred size of the coolbar item

Rectangle getBounds( )

Returns a rectangle giving the coolbar item’s size and location

Control getControl( )

Returns the control contained in the coolbar item

Point getMinimumSize( )

Returns the minimum size to which the coolbar item can be resized

CoolBar getParent( )

Returns the coolbar item’s parent, which must be a CoolBar object

void setControl(Control control)

Sets the control that is contained in the coolbar item

void setSize(int width, int height)

Sets the coolbar item’s size

Continuing the example begun in the previous recipe (CoolBarApp at this book’s site), we’ll add two toolbars to our coolbar. You begin by creating the toolbars, passing the CoolBar object to their constructors, and creating toolbar buttons:

public static void main(String[] args) { display = new Display( ); shell = new Shell(display); shell.setLayout(new GridLayout( )); shell.setText("CoolBar ...