BasicTextAreaUI (Java Platform SE 6) - JDK 5 Documentation v6.0, Java 2 SDK 英文文档

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Java™ Platform
Standard Ed. 6

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javax.swing.plaf.basic
Class BasicTextAreaUI

java.lang.Object
  javax.swing.plaf.ComponentUI
      javax.swing.plaf.TextUI
          javax.swing.plaf.basic.BasicTextUI
              javax.swing.plaf.basic.BasicTextAreaUI

All Implemented Interfaces:: ViewFactory

public class BasicTextAreaUI
extends BasicTextUI
extends BasicTextUI

Provides the look and feel for a plain text editor. In this implementation the default UI is extended to act as a simple view factory.

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^TM has been added to the java.beans package. Please see XMLEncoder.

Nested Class Summary

Nested classes/interfaces inherited from class javax.swing.plaf.basic.BasicTextUI

BasicTextUI.BasicCaret, BasicTextUI.BasicHighlighter

Constructor Summary

BasicTextAreaUI()
          Constructs a new BasicTextAreaUI object.

Method Summary

View create(Element elem)
          Creates the view for an element.

static ComponentUI createUI(JComponent ta)
          Creates a UI for a JTextArea.

int getBaseline(JComponent c, int width, int height)
          Returns the baseline.

Component.BaselineResizeBehavior getBaselineResizeBehavior(JComponent c)
          Returns an enum indicating how the baseline of the component changes as the size changes.

Dimension getMinimumSize(JComponent c)
          The method is overridden to take into account caret width.

Dimension getPreferredSize(JComponent c)
          The method is overridden to take into account caret width.

protected String getPropertyPrefix()
          Fetches the name used as a key to look up properties through the UIManager.

protected void installDefaults()
          Initializes component properties, e.g.

protected void propertyChange(PropertyChangeEvent evt)
          This method gets called when a bound property is changed on the associated JTextComponent.

Methods inherited from class javax.swing.plaf.basic.BasicTextUI

create, createCaret, createHighlighter, createKeymap, damageRange, damageRange, getComponent, getEditorKit, getKeymapName, getMaximumSize, getNextVisualPositionFrom, getRootView, getToolTipText, getVisibleEditorRect, installKeyboardActions, installListeners, installUI, modelChanged, modelToView, modelToView, paint, paintBackground, paintSafely, setView, uninstallDefaults, uninstallKeyboardActions, uninstallListeners, uninstallUI, update, viewToModel, viewToModel

Methods inherited from class javax.swing.plaf.ComponentUI

contains, getAccessibleChild, getAccessibleChildrenCount

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Nested classes/interfaces inherited from class javax.swing.plaf.basic.BasicTextUI
`BasicTextUI.BasicCaret, BasicTextUI.BasicHighlighter`

Constructor Summary
`BasicTextAreaUI()` Constructs a new BasicTextAreaUI object.

Method Summary
`View`	`create(Element elem)` Creates the view for an element.
`static ComponentUI`	`createUI(JComponent ta)` Creates a UI for a JTextArea.
`int`	`getBaseline(JComponent c, int width, int height)` Returns the baseline.
`Component.BaselineResizeBehavior`	`getBaselineResizeBehavior(JComponent c)` Returns an enum indicating how the baseline of the component changes as the size changes.
`Dimension`	`getMinimumSize(JComponent c)` The method is overridden to take into account caret width.
`Dimension`	`getPreferredSize(JComponent c)` The method is overridden to take into account caret width.
`protected String`	`getPropertyPrefix()` Fetches the name used as a key to look up properties through the UIManager.
`protected void`	`installDefaults()` Initializes component properties, e.g.
`protected void`	`propertyChange(PropertyChangeEvent evt)` This method gets called when a bound property is changed on the associated JTextComponent.

Methods inherited from class javax.swing.plaf.basic.BasicTextUI
`create, createCaret, createHighlighter, createKeymap, damageRange, damageRange, getComponent, getEditorKit, getKeymapName, getMaximumSize, getNextVisualPositionFrom, getRootView, getToolTipText, getVisibleEditorRect, installKeyboardActions, installListeners, installUI, modelChanged, modelToView, modelToView, paint, paintBackground, paintSafely, setView, uninstallDefaults, uninstallKeyboardActions, uninstallListeners, uninstallUI, update, viewToModel, viewToModel`

Methods inherited from class javax.swing.plaf.ComponentUI
`contains, getAccessibleChild, getAccessibleChildrenCount`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

BasicTextAreaUI

public BasicTextAreaUI()

Constructs a new BasicTextAreaUI object.

Method Detail

createUI

public static ComponentUI createUI(JComponent ta)

Creates a UI for a JTextArea.

Parameters:: ta - a text area
Returns:: the UI

getPropertyPrefix

protected String getPropertyPrefix()

Fetches the name used as a key to look up properties through the UIManager. This is used as a prefix to all the standard text properties.

Specified by:: getPropertyPrefix in class BasicTextUI

Returns:: the name ("TextArea")

installDefaults

protected void installDefaults()

Description copied from class: BasicTextUI

Initializes component properties, e.g. font, foreground, background, caret color, selection color, selected text color, disabled text color, and border color. The font, foreground, and background properties are only set if their current value is either null or a UIResource, other properties are set if the current value is null.

Overrides:: installDefaults in class BasicTextUI

See Also:: BasicTextUI.uninstallDefaults(), BasicTextUI.installUI(javax.swing.JComponent)

propertyChange

protected void propertyChange(PropertyChangeEvent evt)

This method gets called when a bound property is changed on the associated JTextComponent. This is a hook which UI implementations may change to reflect how the UI displays bound properties of JTextComponent subclasses. This is implemented to rebuild the View when the WrapLine or the WrapStyleWord property changes.

Overrides:: propertyChange in class BasicTextUI

Parameters:: evt - the property change event

getPreferredSize

public Dimension getPreferredSize(JComponent c)

The method is overridden to take into account caret width.

Overrides:: getPreferredSize in class BasicTextUI

Parameters:: c - the editor component
Returns:: the preferred size
Throws:: IllegalArgumentException - if invalid value is passed
Since:: 1.5
See Also:: JComponent.getPreferredSize(), LayoutManager.preferredLayoutSize(java.awt.Container)

getMinimumSize

public Dimension getMinimumSize(JComponent c)