JColorChooser
Class JColorChooser
- java.lang.Object
-
- java.awt.Component
-
- java.awt.Container
-
- javax.swing.JComponent
-
- javax.swing.JColorChooser
- All Implemented Interfaces:
- ImageObserver, MenuContainer, Serializable, Accessible
public class JColorChooser extends JComponent implements Accessible
JColorChooser
provides a pane of controls designed to allow a user to manipulate and select a color. For information about using color choosers, see How to Use Color Choosers, a section in The Java Tutorial.
This class provides three levels of API:
- A static convenience method which shows a modal color-chooser dialog and returns the color selected by the user.
- A static convenience method for creating a color-chooser dialog where
ActionListeners
can be specified to be invoked when the user presses one of the dialog buttons. - The ability to create instances of
JColorChooser
panes directly (within any container).PropertyChange
listeners can be added to detect when the current "color" property changes.
Warning: Swing is not thread safe. For more information see Swing's Threading Policy.
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
.
Nested Classes
Modifier and Type | Class and Description |
---|---|
protected class |
JColorChooser.AccessibleJColorChooser This class implements accessibility support for the |
Nested classes/interfaces inherited from class javax.swing.JComponent
JComponent.AccessibleJComponent
Nested classes/interfaces inherited from class java.awt.Container
Container.AccessibleAWTContainer
Nested classes/interfaces inherited from class java.awt.Component
Component.AccessibleAWTComponent, Component.BaselineResizeBehavior, Component.BltBufferStrategy, Component.FlipBufferStrategy
Fields
SELECTION_MODEL_PROPERTY
public static final String SELECTION_MODEL_PROPERTY
The selection model property name.
PREVIEW_PANEL_PROPERTY
public static final String PREVIEW_PANEL_PROPERTY
The preview panel property name.
CHOOSER_PANELS_PROPERTY
public static final String CHOOSER_PANELS_PROPERTY
The chooserPanel array property name.
accessibleContext
protected AccessibleContext accessibleContext
Constructors
JColorChooser
public JColorChooser()
Creates a color chooser pane with an initial color of white.
JColorChooser
public JColorChooser(Color initialColor)
Creates a color chooser pane with the specified initial color.
- Parameters:
-
initialColor
- the initial color set in the chooser
JColorChooser
public JColorChooser(ColorSelectionModel model)
Creates a color chooser pane with the specified ColorSelectionModel
.
- Parameters:
-
model
- theColorSelectionModel
to be used
Methods
showDialog
public static Color showDialog(Component component, String title, Color initialColor) throws HeadlessException
Shows a modal color-chooser dialog and blocks until the dialog is hidden. If the user presses the "OK" button, then this method hides/disposes the dialog and returns the selected color. If the user presses the "Cancel" button or closes the dialog without pressing "OK", then this method hides/disposes the dialog and returns null
.
- Parameters:
-
component
- the parentComponent
for the dialog -
title
- the String containing the dialog's title -
initialColor
- the initial Color set when the color-chooser is shown - Returns:
- the selected color or
null
if the user opted out - Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true. - See Also:
GraphicsEnvironment.isHeadless()
createDialog
public static JDialog createDialog(Component c, String title, boolean modal, JColorChooser chooserPane, ActionListener okListener, ActionListener cancelListener) throws HeadlessException
Creates and returns a new dialog containing the specified ColorChooser
pane along with "OK", "Cancel", and "Reset" buttons. If the "OK" or "Cancel" buttons are pressed, the dialog is automatically hidden (but not disposed). If the "Reset" button is pressed, the color-chooser's color will be reset to the color which was set the last time show
was invoked on the dialog and the dialog will remain showing.
- Parameters:
-
c
- the parent component for the dialog -
title
- the title for the dialog -
modal
- a boolean. When true, the remainder of the program is inactive until the dialog is closed. -
chooserPane
- the color-chooser to be placed inside the dialog -
okListener
- the ActionListener invoked when "OK" is pressed -
cancelListener
- the ActionListener invoked when "Cancel" is pressed - Returns:
- a new dialog containing the color-chooser pane
- Throws:
-
HeadlessException
- if GraphicsEnvironment.isHeadless() returns true. - See Also:
GraphicsEnvironment.isHeadless()
getUI
public ColorChooserUI getUI()
Returns the L&F object that renders this component.
- Returns:
- the
ColorChooserUI
object that renders this component
setUI
public void setUI(ColorChooserUI ui)
Sets the L&F object that renders this component.
- Parameters:
-
ui
- theColorChooserUI
L&F object - See Also:
UIDefaults.getUI(javax.swing.JComponent)
updateUI
public void updateUI()
Notification from the UIManager
that the L&F has changed. Replaces the current UI object with the latest version from the UIManager
.
- Overrides:
-
updateUI
in classJComponent
- See Also:
JComponent.updateUI()
getUIClassID
public String getUIClassID()
Returns the name of the L&F class that renders this component.
- Overrides:
-
getUIClassID
in classJComponent
- Returns:
- the string "ColorChooserUI"
- See Also:
-
JComponent.getUIClassID()
,UIDefaults.getUI(javax.swing.JComponent)
getColor
public Color getColor()
Gets the current color value from the color chooser. By default, this delegates to the model.
- Returns:
- the current color value of the color chooser
setColor
public void setColor(Color color)
Sets the current color of the color chooser to the specified color. The ColorSelectionModel
will fire a ChangeEvent
- Parameters:
-
color
- the color to be set in the color chooser - See Also:
Container.addPropertyChangeListener(java.beans.PropertyChangeListener)
setColor
public void setColor(int r, int g, int b)
Sets the current color of the color chooser to the specified RGB color. Note that the values of red, green, and blue should be between the numbers 0 and 255, inclusive.
- Parameters:
-
r
- an int specifying the amount of Red -
g
- an int specifying the amount of Green -
b
- an int specifying the amount of Blue - Throws:
-
IllegalArgumentException
- if r,g,b values are out of range - See Also:
Color
setColor
public void setColor(int c)
Sets the current color of the color chooser to the specified color.
- Parameters:
-
c
- an integer value that sets the current color in the chooser where the low-order 8 bits specify the Blue value, the next 8 bits specify the Green value, and the 8 bits above that specify the Red value.
setDragEnabled
public void setDragEnabled(boolean b)
Sets the dragEnabled
property, which must be true
to enable automatic drag handling (the first part of drag and drop) on this component. The transferHandler
property needs to be set to a non-null
value for the drag to do anything. The default value of the dragEnabled
property is false
.
When automatic drag handling is enabled, most look and feels begin a drag-and-drop operation when the user presses the mouse button over the preview panel. Some look and feels might not support automatic drag and drop; they will ignore this property. You can work around such look and feels by modifying the component to directly call the exportAsDrag
method of a TransferHandler
.
- Parameters:
-
b
- the value to set thedragEnabled
property to - Throws:
-
HeadlessException
- ifb
istrue
andGraphicsEnvironment.isHeadless()
returnstrue
- Since:
- 1.4
- See Also:
-
GraphicsEnvironment.isHeadless()
,getDragEnabled()
,JComponent.setTransferHandler(javax.swing.TransferHandler)
,TransferHandler
getDragEnabled
public boolean getDragEnabled()
Gets the value of the dragEnabled
property.
- Returns:
- the value of the
dragEnabled
property - Since:
- 1.4
- See Also:
setDragEnabled(boolean)
setPreviewPanel
public void setPreviewPanel(JComponent preview)
Sets the current preview panel. This will fire a PropertyChangeEvent
for the property named "previewPanel".
- Parameters:
-
preview
- theJComponent
which displays the current color - See Also:
Container.addPropertyChangeListener(java.beans.PropertyChangeListener)
getPreviewPanel
public JComponent getPreviewPanel()
Returns the preview panel that shows a chosen color.
- Returns:
- a
JComponent
object -- the preview panel
addChooserPanel
public void addChooserPanel(AbstractColorChooserPanel panel)
Adds a color chooser panel to the color chooser.
- Parameters:
-
panel
- theAbstractColorChooserPanel
to be added
removeChooserPanel
public AbstractColorChooserPanel removeChooserPanel(AbstractColorChooserPanel panel)
Removes the Color Panel specified.
- Parameters:
-
panel
- a string that specifies the panel to be removed - Returns:
- the color panel
- Throws:
-
IllegalArgumentException
- if panel is not in list of known chooser panels
setChooserPanels
public void setChooserPanels(AbstractColorChooserPanel[] panels)
Specifies the Color Panels used to choose a color value.
- Parameters:
-
panels
- an array ofAbstractColorChooserPanel
objects
getChooserPanels
public AbstractColorChooserPanel[] getChooserPanels()
Returns the specified color panels.
- Returns:
- an array of
AbstractColorChooserPanel
objects
getSelectionModel
public ColorSelectionModel getSelectionModel()
Returns the data model that handles color selections.
- Returns:
- a
ColorSelectionModel
object
setSelectionModel
public void setSelectionModel(ColorSelectionModel newModel)
Sets the model containing the selected color.
- Parameters:
-
newModel
- the newColorSelectionModel
object
paramString
protected String paramString()
Returns a string representation of this JColorChooser
. This method is intended to be used only for debugging purposes, and the content and format of the returned string may vary between implementations. The returned string may be empty but may not be null
.
- Overrides:
-
paramString
in classJComponent
- Returns:
- a string representation of this
JColorChooser
getAccessibleContext
public AccessibleContext getAccessibleContext()
Gets the AccessibleContext associated with this JColorChooser. For color choosers, the AccessibleContext takes the form of an AccessibleJColorChooser. A new AccessibleJColorChooser instance is created if necessary.
- Specified by:
-
getAccessibleContext
in interfaceAccessible
- Overrides:
-
getAccessibleContext
in classComponent
- Returns:
- an AccessibleJColorChooser that serves as the AccessibleContext of this JColorChooser
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