236 lines
6.7 KiB
Java
236 lines
6.7 KiB
Java
/* LookAndFeel.java --
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Copyright (C) 2002, 2004, 2005 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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package javax.swing;
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import java.awt.Component;
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import java.awt.Toolkit;
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import javax.swing.text.JTextComponent;
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public abstract class LookAndFeel
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{
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/**
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* This method is called once by UIManager.setLookAndFeel to create
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* the look and feel specific defaults table.
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*
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* @return the UI defaults
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*/
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public UIDefaults getDefaults()
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{
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return null;
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}
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/**
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* Returns a description of the look and feel.
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*
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* @return A description of the look and feel.
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*/
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public abstract String getDescription();
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public static Object getDesktopPropertyValue(String systemPropertyName,
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Object fallbackValue)
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{
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Object value = Toolkit.getDefaultToolkit().getDesktopProperty(systemPropertyName);
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return value != null ? value : fallbackValue;
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}
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/**
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* Returns an identifier for the look and feel.
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*
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* @return An identifier for the look and feel.
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*/
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public abstract String getID();
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/**
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* Returns the name for the look and feel.
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*
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* @return The name for the look and feel.
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*/
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public abstract String getName();
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/**
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* Returns true when the Look and Feel supports window decorations,
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* false others. This method returns always false and needs to be overwritten
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* when the derived Look and Feel supports this.
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*
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* @return false
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*
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* @since 1.4
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*/
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public boolean getSupportsWindowDecorations()
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{
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return false;
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}
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/**
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* UIManager.setLookAndFeel calls this method before the first call
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* (and typically the only call) to getDefaults().
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*/
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public void initialize()
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{
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}
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/**
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* Convenience method for installing a component's default Border object
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* on the specified component if either the border is currently null
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* or already an instance of UIResource.
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*/
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public static void installBorder(JComponent c, String defaultBorderName)
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{
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}
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/**
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* Convenience method for initializing a component's foreground and
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* background color properties with values from the current defaults table.
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*/
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public static void installColors(JComponent c, String defaultBgName, String defaultFgName)
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{
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}
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/**
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* Convenience method for initializing a components foreground background
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* and font properties with values from the current defaults table.
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*/
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public static void installColorsAndFont(JComponent component,
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String defaultBgName,
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String defaultFgName,
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String defaultFontName)
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{
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}
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/**
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* Returns <code>true</code> if the look and feel is the "native" look and
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* feel for the current platform, and <code>false</code> otherwise.
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*
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* @return A flag indicating whether or not this is the native look and feel
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* for the current platform.
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*/
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public abstract boolean isNativeLookAndFeel();
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/**
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* Returns <code>true</code> if the look and feel is supported on the
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* current operating system, and <code>false</code> otherwise. This
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* mechanism is provided so that it is possible to prevent a look and feel
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* from being used on some operating systems (usually for legal, not
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* technical, reasons).
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*
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* @return A flag indicating whether or not the look and feel is supported
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* on the current platform.
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*/
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public abstract boolean isSupportedLookAndFeel();
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/**
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* Loads the bindings in keys into retMap.
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*/
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public static void loadKeyBindings(InputMap retMap, Object[] keys)
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{
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}
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/**
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* Creates a ComponentInputMap from keys.
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*/
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public static ComponentInputMap makeComponentInputMap(JComponent c,
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Object[] keys)
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{
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return null;
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}
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/**
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* Utility method that creates a UIDefaults.LazyValue that creates an
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* ImageIcon UIResource for the specified gifFile filename.
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*/
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public static Object makeIcon(Class baseClass, String gifFile)
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{
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return null;
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}
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/**
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* Creates a InputMap from keys.
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*/
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public static InputMap makeInputMap(Object[] keys)
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{
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return null;
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}
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/**
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* Convenience method for building lists of KeyBindings.
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*/
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public static JTextComponent.KeyBinding[] makeKeyBindings(Object[] keyBindingList)
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{
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return null;
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}
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/**
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* Invoked when the user attempts an invalid operation. The default implement
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* just beeps. Subclasses that wish to change this need to override this
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* method.
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*
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* @param component the component the error occured in
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*/
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public void provideErrorFeedback(Component component)
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{
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Toolkit.getDefaultToolkit().beep();
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}
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/**
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* Returns a string that displays and identifies this object's properties.
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*
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* @return the string "LookAndFeel"
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*/
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public String toString()
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{
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return "LookAndFeel";
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}
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/**
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* UIManager.setLookAndFeel calls this method just before we're replaced by
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* a new default look and feel.
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*/
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public void uninitialize()
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{
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}
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/**
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* Convenience method for un-installing a component's default border on the
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* specified component if the border is currently an instance of UIResource.
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*/
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public static void uninstallBorder(JComponent c)
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{
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}
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}
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