Package org.eclipse.swt.events

Interface TreeListener

  • All Superinterfaces:
    EventListener, SWTEventListener
    All Known Implementing Classes:
    TreeAdapter
    public interface TreeListener
extends SWTEventListener
    Classes which implement this interface provide methods that deal with the expanding and collapsing of tree branches.

    After creating an instance of a class that implements this interface it can be added to a tree control using the addTreeListener method and removed using the removeTreeListener method. When a branch of the tree is expanded or collapsed, the appropriate method will be invoked.

    See Also:
    TreeAdapter, TreeEvent

    • Method Detail

      • treeCollapsed

        void treeCollapsed​(TreeEvent e)
        Sent when a tree branch is collapsed.
        Parameters:
        e - an event containing information about the tree operation

      • treeExpanded

        void treeExpanded​(TreeEvent e)
        Sent when a tree branch is expanded.
        Parameters:
        e - an event containing information about the tree operation

      • treeCollapsedAdapter

        static TreeListener treeCollapsedAdapter​(Consumer<TreeEvent> c)
        Static helper method to create a TreeListener for the treeCollapsed(TreeEvent e)) method, given a lambda expression or a method reference.
        Parameters:
        c - the consumer of the event
        Returns:
        TreeListener
        Since:
        3.107

      • treeExpandedAdapter

        static TreeListener treeExpandedAdapter​(Consumer<TreeEvent> c)
        Static helper method to create a TreeListener for the treeExpanded(TreeEvent e)) method, given a lambda expression or a method reference.
        Parameters:
        c - the consumer of the event
        Returns:
        TreeListener
        Since:
        3.107