Class DefaultListRenderer

  • All Implemented Interfaces:
    java.io.Serializable, javax.swing.ListCellRenderer, StringValue, RolloverRenderer

    public class DefaultListRenderer
    extends AbstractRenderer
    implements javax.swing.ListCellRenderer
    Adapter to glue SwingX renderer support to core api. It has convenience constructors to create a LabelProvider, optionally configured with a StringValue and horizontal alignment. Typically, client code does not interact with this class except at instantiation time.

    Note: core DefaultListCellRenderer shows either an icon or the element's toString representation, depending on whether or not the given value is of type icon or implementors. This renderer's empty/null provider constructor takes care of configuring the default provider with a converter which mimics that behaviour. When instantiating this renderer with any of the constructors which have converters as parameters, it's up to the client code to supply the appropriate converter, if needed:

    
     StringValue sv = new StringValue() {
     
         public String getString(Object value) {
             if (value instanceof Icon) {
                 return "";
             }
             return StringValue.TO_STRING.getString(value);
         }
     
     };
     StringValue lv = new MappedValue(sv, IconValue.ICON);
     listRenderer = new DefaultListRenderer(lv, alignment);
     
     

    See Also:
    ComponentProvider, StringValue, IconValue, MappedValue, Serialized Form
    • Field Detail

      • cellContext

        protected CellContext<javax.swing.JList> cellContext
    • Constructor Detail

      • DefaultListRenderer

        public DefaultListRenderer()
        Instantiates a default list renderer with the default component provider.
      • DefaultListRenderer

        public DefaultListRenderer​(ComponentProvider componentProvider)
        Instantiates a ListCellRenderer with the given ComponentProvider. If the provider is null, creates and uses a default. The default provider is of type LabelProvider

        Note: the default provider is configured with a custom StringValue which behaves exactly as core DefaultListCellRenderer: depending on whether or not given value is of type icon or implementors, it shows either the icon or the element's toString.

        Parameters:
        componentProvider - the provider of the configured component to use for cell rendering
      • DefaultListRenderer

        public DefaultListRenderer​(StringValue converter)
        Instantiates a default table renderer with a default component controller using the given converter.

        PENDING JW: how to guarantee core consistent icon handling? Leave to client code?

        Parameters:
        converter - the converter to use for mapping the content value to a String representation.
      • DefaultListRenderer

        public DefaultListRenderer​(StringValue converter,
                                   int alignment)
        Instantiates a default list renderer with a default component controller using the given converter and horizontal alignment. PENDING JW: how to guarantee core consistent icon handling? Leave to client code?
        Parameters:
        converter - the converter to use for mapping the content value to a String representation.
        alignment - the horizontal alignment.
    • Method Detail

      • getListCellRendererComponent

        public java.awt.Component getListCellRendererComponent​(javax.swing.JList list,
                                                               java.lang.Object value,
                                                               int index,
                                                               boolean isSelected,
                                                               boolean cellHasFocus)
        Returns a configured component, appropriate to render the given list cell.
        Specified by:
        getListCellRendererComponent in interface javax.swing.ListCellRenderer
        Parameters:
        list - the JList to render on
        value - the value to assign to the cell
        isSelected - true if cell is selected
        cellHasFocus - true if cell has focus
        index - the row index (in view coordinates) of the cell to render
        Returns:
        a component to render the given list cell.