Package Summary  Overview Summary

class:DefaultListCellRenderer [CHANGED]

All Implemented Interfaces:
ImageObserver, MenuContainer, Serializable, Accessible, ListCellRenderer<Object>, SwingConstants
Direct Known Subclasses:
DefaultListCellRenderer.UIResource, MetalFileChooserUI.FileRenderer, MetalFileChooserUI.FilterComboBoxRenderer

public class DefaultListCellRenderer
extends JLabel
implements ListCellRenderer<Object>, Serializable
Renders an item in a list.

Implementation Note: This class overrides invalidate, validate, revalidate, repaint, isOpaque, and firePropertyChange solely to improve performance. If not overridden, these frequently called methods would execute code paths that are unnecessary for the default list cell renderer. If you write your own renderer, take care to weigh the benefits and drawbacks of overriding these methods.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™JavaBeans has been added to the java.beans package. Please see XMLEncoder.

Since:
1.2
All Implemented Interfaces:
ImageObserver, MenuContainer, Serializable, Accessible, ListCellRenderer<Object>, SwingConstants
Direct Known Subclasses:
DefaultListCellRenderer.UIResource, MetalFileChooserUI.FileRenderer, MetalFileChooserUI.FilterComboBoxRenderer

public class DefaultListCellRenderer
extends JLabel
implements ListCellRenderer<Object>, Serializable
Renders an item in a list.

Implementation Note: This class overrides invalidate, validate, revalidate, repaint, isOpaque, and firePropertyChange solely to improve performance. If not overridden, these frequently called methods would execute code paths that are unnecessary for the default list cell renderer. If you write your own renderer, take care to weigh the benefits and drawbacks of overriding these methods.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see XMLEncoder.

Since:
1.2
All Implemented Interfaces:
ImageObserver, MenuContainer, Serializable, Accessible, ListCellRenderer<Object>, SwingConstants
Direct Known Subclasses:
DefaultListCellRenderer.UIResource, MetalFileChooserUI.FileRenderer, MetalFileChooserUI.FilterComboBoxRenderer

public class DefaultListCellRenderer
extends JLabel
implements ListCellRenderer<Object>, Serializable
Renders an item in a list.

Implementation Note: This class overrides invalidate, validate, revalidate, repaint, isOpaque, and firePropertyChange solely to improve performance. If not overridden, these frequently called methods would execute code paths that are unnecessary for the default list cell renderer. If you write your own renderer, take care to weigh the benefits and drawbacks of overriding these methods.

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans has been added to the java.beans package. Please see XMLEncoder.

Since:
1.2

field:noFocusBorder [NONE]

constructor:DefaultListCellRenderer() [NONE]

  • DefaultListCellRenderer

    public DefaultListCellRenderer()
    Constructs a default renderer object for an item in a list.

method:getListCellRendererComponent(javax.swing.JList,java.lang.Object,int,boolean,boolean) [NONE]

  • getListCellRendererComponent

    public Component getListCellRendererComponent?(JList<?> list, Object value, int index, boolean isSelected, boolean cellHasFocus)
    Description copied from interface: ListCellRenderer
    Return a component that has been configured to display the specified value. That component's paint method is then called to "render" the cell. If it is necessary to compute the dimensions of a list because the list cells do not have a fixed size, this method is called to generate a component on which getPreferredSize can be invoked.
    Specified by:
    getListCellRendererComponent in interface ListCellRenderer<Object>
    Parameters:
    list - The JList we're painting.
    value - The value returned by list.getModel().getElementAt(index).
    index - The cells index.
    isSelected - True if the specified cell was selected.
    cellHasFocus - True if the specified cell has the focus.
    Returns:
    A component whose paint() method will render the specified value.
    See Also:
    JList, ListSelectionModel, ListModel
  • method:isOpaque() [NONE]

    isOpaque

    public boolean isOpaque()
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    isOpaque in class JComponent
    Returns:
    true if the background is completely opaque and differs from the JList's background; false otherwise
    Since:
    1.5
    See Also:
    JComponent.setOpaque(boolean)

    method:validate() [NONE]

    validate

    public void validate()
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    validate in class Container
    See Also:
    Container.add(java.awt.Component), Container.invalidate(), Container.isValidateRoot(), JComponent.revalidate(), Container.validateTree()

    method:invalidate() [NONE]

    invalidate

    public void invalidate()
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    invalidate in class Container
    Since:
    1.5
    See Also:
    Container.validate(), Container.layout(), LayoutManager2

    method:repaint() [NONE]

    repaint

    public void repaint()
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    repaint in class Component
    Since:
    1.5
    See Also:
    Component.update(Graphics)

    method:revalidate() [NONE]

    revalidate

    public void revalidate()
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    revalidate in class JComponent
    See Also:
    Component.invalidate(), Container.validate(), JComponent.isValidateRoot(), RepaintManager.addInvalidComponent(javax.swing.JComponent)

    method:repaint(long,int,int,int,int) [NONE]

    repaint

    public void repaint?(long tm, int x, int y, int width, int height)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    repaint in class JComponent
    Parameters:
    tm - this parameter is not used
    x - the x value of the dirty region
    y - the y value of the dirty region
    width - the width of the dirty region
    height - the height of the dirty region
    See Also:
    JComponent.isPaintingOrigin(), Component.isShowing(), RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)

    method:repaint(java.awt.Rectangle) [NONE]

    repaint

    public void repaint?(Rectangle r)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    repaint in class JComponent
    Parameters:
    r - a Rectangle containing the dirty region
    See Also:
    JComponent.isPaintingOrigin(), Component.isShowing(), RepaintManager.addDirtyRegion(javax.swing.JComponent, int, int, int, int)

    method:firePropertyChange(java.lang.String,java.lang.Object,java.lang.Object) [NONE]

    firePropertyChange

    protected void firePropertyChange?(String propertyName, Object oldValue, Object newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class Component
    Parameters:
    propertyName - the property whose value has changed
    oldValue - the property's previous value
    newValue - the property's new value

    method:firePropertyChange(java.lang.String,byte,byte) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, byte oldValue, byte newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class Component
    Parameters:
    propertyName - the programmatic name of the property that was changed
    oldValue - the old value of the property (as a byte)
    newValue - the new value of the property (as a byte)
    See Also:
    Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

    method:firePropertyChange(java.lang.String,char,char) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, char oldValue, char newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class JComponent
    Parameters:
    propertyName - the programmatic name of the property that was changed
    oldValue - the old value of the property (as a char)
    newValue - the new value of the property (as a char)
    See Also:
    Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

    method:firePropertyChange(java.lang.String,short,short) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, short oldValue, short newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class Component
    Parameters:
    propertyName - the programmatic name of the property that was changed
    oldValue - the old value of the property (as a short)
    newValue - the new value of the property (as a short)
    See Also:
    Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

    method:firePropertyChange(java.lang.String,int,int) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, int oldValue, int newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class JComponent
    Parameters:
    propertyName - the property whose value has changed
    oldValue - the property's previous value
    newValue - the property's new value

    method:firePropertyChange(java.lang.String,long,long) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, long oldValue, long newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class Component
    Parameters:
    propertyName - the programmatic name of the property that was changed
    oldValue - the old value of the property (as a long)
    newValue - the new value of the property (as a long)
    See Also:
    Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

    method:firePropertyChange(java.lang.String,float,float) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, float oldValue, float newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class Component
    Parameters:
    propertyName - the programmatic name of the property that was changed
    oldValue - the old value of the property (as a float)
    newValue - the new value of the property (as a float)
    See Also:
    Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

    method:firePropertyChange(java.lang.String,double,double) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, double oldValue, double newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class Component
    Parameters:
    propertyName - the programmatic name of the property that was changed
    oldValue - the old value of the property (as a double)
    newValue - the new value of the property (as a double)
    See Also:
    Component.firePropertyChange(java.lang.String, java.lang.Object, java.lang.Object)

    method:firePropertyChange(java.lang.String,boolean,boolean) [NONE]

    firePropertyChange

    public void firePropertyChange?(String propertyName, boolean oldValue, boolean newValue)
    Overridden for performance reasons. See the Implementation Note for more information.
    Overrides:
    firePropertyChange in class JComponent
    Parameters:
    propertyName - the property whose value has changed
    oldValue - the property's previous value
    newValue - the property's new value

    © 2020 Oracle Corporation and/or its affiliates