author | yan |
Tue, 24 Sep 2013 17:04:47 +0400 | |
changeset 20158 | 1c5d22e5b898 |
parent 10316 | 8d1ca7d93fb2 |
child 20455 | f6f9a0c2796b |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2008, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package javax.swing.text; |
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import java.awt.*; |
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import java.util.*; |
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import java.io.*; |
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import javax.swing.SwingUtilities; |
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import javax.swing.event.ChangeListener; |
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import javax.swing.event.EventListenerList; |
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import javax.swing.event.ChangeEvent; |
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import java.lang.ref.WeakReference; |
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import java.util.WeakHashMap; |
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import sun.font.FontUtilities; |
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/** |
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* A pool of styles and their associated resources. This class determines |
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* the lifetime of a group of resources by being a container that holds |
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* caches for various resources such as font and color that get reused |
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* by the various style definitions. This can be shared by multiple |
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* documents if desired to maximize the sharing of related resources. |
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* <p> |
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* This class also provides efficient support for small sets of attributes |
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* and compresses them by sharing across uses and taking advantage of |
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* their immutable nature. Since many styles are replicated, the potential |
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* for sharing is significant, and copies can be extremely cheap. |
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* Larger sets reduce the possibility of sharing, and therefore revert |
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* automatically to a less space-efficient implementation. |
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* <p> |
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* <strong>Warning:</strong> |
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* Serialized objects of this class will not be compatible with |
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* future Swing releases. The current serialization support is |
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* appropriate for short term storage or RMI between applications running |
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* the same version of Swing. As of 1.4, support for long term storage |
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* of all JavaBeans<sup><font size="-2">TM</font></sup> |
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* has been added to the <code>java.beans</code> package. |
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* Please see {@link java.beans.XMLEncoder}. |
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* |
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* @author Timothy Prinzing |
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*/ |
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public class StyleContext implements Serializable, AbstractDocument.AttributeContext { |
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/** |
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* Returns default AttributeContext shared by all documents that |
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* don't bother to define/supply their own context. |
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* |
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* @return the context |
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*/ |
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public static final StyleContext getDefaultStyleContext() { |
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if (defaultContext == null) { |
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defaultContext = new StyleContext(); |
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} |
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return defaultContext; |
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} |
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private static StyleContext defaultContext; |
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/** |
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* Creates a new StyleContext object. |
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*/ |
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public StyleContext() { |
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styles = new NamedStyle(null); |
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addStyle(DEFAULT_STYLE, null); |
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} |
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/** |
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* Adds a new style into the style hierarchy. Style attributes |
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* resolve from bottom up so an attribute specified in a child |
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* will override an attribute specified in the parent. |
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* |
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* @param nm the name of the style (must be unique within the |
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* collection of named styles in the document). The name may |
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* be null if the style is unnamed, but the caller is responsible |
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* for managing the reference returned as an unnamed style can't |
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* be fetched by name. An unnamed style may be useful for things |
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* like character attribute overrides such as found in a style |
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* run. |
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* @param parent the parent style. This may be null if unspecified |
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* attributes need not be resolved in some other style. |
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* @return the created style |
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*/ |
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public Style addStyle(String nm, Style parent) { |
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Style style = new NamedStyle(nm, parent); |
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if (nm != null) { |
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// add a named style, a class of attributes |
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styles.addAttribute(nm, style); |
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} |
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return style; |
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} |
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/** |
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* Removes a named style previously added to the document. |
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* |
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* @param nm the name of the style to remove |
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*/ |
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public void removeStyle(String nm) { |
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styles.removeAttribute(nm); |
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} |
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/** |
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* Fetches a named style previously added to the document |
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* |
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* @param nm the name of the style |
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* @return the style |
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*/ |
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public Style getStyle(String nm) { |
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return (Style) styles.getAttribute(nm); |
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} |
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/** |
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* Fetches the names of the styles defined. |
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* |
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* @return the list of names as an enumeration |
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*/ |
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public Enumeration<?> getStyleNames() { |
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return styles.getAttributeNames(); |
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} |
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/** |
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* Adds a listener to track when styles are added |
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* or removed. |
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* |
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* @param l the change listener |
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*/ |
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public void addChangeListener(ChangeListener l) { |
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styles.addChangeListener(l); |
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} |
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/** |
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* Removes a listener that was tracking styles being |
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* added or removed. |
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* |
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* @param l the change listener |
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*/ |
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public void removeChangeListener(ChangeListener l) { |
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styles.removeChangeListener(l); |
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} |
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/** |
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* Returns an array of all the <code>ChangeListener</code>s added |
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* to this StyleContext with addChangeListener(). |
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* |
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* @return all of the <code>ChangeListener</code>s added or an empty |
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* array if no listeners have been added |
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* @since 1.4 |
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*/ |
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public ChangeListener[] getChangeListeners() { |
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return ((NamedStyle)styles).getChangeListeners(); |
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} |
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/** |
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* Gets the font from an attribute set. This is |
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* implemented to try and fetch a cached font |
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* for the given AttributeSet, and if that fails |
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* the font features are resolved and the |
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* font is fetched from the low-level font cache. |
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* |
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* @param attr the attribute set |
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* @return the font |
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*/ |
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public Font getFont(AttributeSet attr) { |
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// PENDING(prinz) add cache behavior |
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int style = Font.PLAIN; |
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if (StyleConstants.isBold(attr)) { |
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style |= Font.BOLD; |
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} |
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if (StyleConstants.isItalic(attr)) { |
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style |= Font.ITALIC; |
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} |
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String family = StyleConstants.getFontFamily(attr); |
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int size = StyleConstants.getFontSize(attr); |
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/** |
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* if either superscript or subscript is |
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* is set, we need to reduce the font size |
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* by 2. |
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*/ |
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if (StyleConstants.isSuperscript(attr) || |
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StyleConstants.isSubscript(attr)) { |
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size -= 2; |
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} |
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return getFont(family, style, size); |
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} |
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/** |
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* Takes a set of attributes and turn it into a foreground color |
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* specification. This might be used to specify things |
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* like brighter, more hue, etc. By default it simply returns |
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* the value specified by the StyleConstants.Foreground attribute. |
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* |
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* @param attr the set of attributes |
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* @return the color |
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*/ |
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public Color getForeground(AttributeSet attr) { |
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return StyleConstants.getForeground(attr); |
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} |
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/** |
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* Takes a set of attributes and turn it into a background color |
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* specification. This might be used to specify things |
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* like brighter, more hue, etc. By default it simply returns |
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* the value specified by the StyleConstants.Background attribute. |
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* |
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* @param attr the set of attributes |
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* @return the color |
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*/ |
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public Color getBackground(AttributeSet attr) { |
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return StyleConstants.getBackground(attr); |
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} |
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/** |
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* Gets a new font. This returns a Font from a cache |
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* if a cached font exists. If not, a Font is added to |
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* the cache. This is basically a low-level cache for |
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* 1.1 font features. |
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* |
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* @param family the font family (such as "Monospaced") |
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* @param style the style of the font (such as Font.PLAIN) |
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* @param size the point size >= 1 |
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* @return the new font |
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*/ |
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public Font getFont(String family, int style, int size) { |
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fontSearch.setValue(family, style, size); |
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Font f = fontTable.get(fontSearch); |
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if (f == null) { |
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// haven't seen this one yet. |
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Style defaultStyle = |
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getStyle(StyleContext.DEFAULT_STYLE); |
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if (defaultStyle != null) { |
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final String FONT_ATTRIBUTE_KEY = "FONT_ATTRIBUTE_KEY"; |
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Font defaultFont = |
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(Font) defaultStyle.getAttribute(FONT_ATTRIBUTE_KEY); |
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if (defaultFont != null |
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&& defaultFont.getFamily().equalsIgnoreCase(family)) { |
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f = defaultFont.deriveFont(style, size); |
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} |
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} |
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if (f == null) { |
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f = new Font(family, style, size); |
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} |
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if (! FontUtilities.fontSupportsDefaultEncoding(f)) { |
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f = FontUtilities.getCompositeFontUIResource(f); |
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} |
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FontKey key = new FontKey(family, style, size); |
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fontTable.put(key, f); |
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} |
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return f; |
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} |
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/** |
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* Returns font metrics for a font. |
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* |
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* @param f the font |
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* @return the metrics |
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*/ |
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public FontMetrics getFontMetrics(Font f) { |
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// The Toolkit implementations cache, so we just forward |
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// to the default toolkit. |
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return Toolkit.getDefaultToolkit().getFontMetrics(f); |
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} |
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// --- AttributeContext methods -------------------- |
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/** |
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* Adds an attribute to the given set, and returns |
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* the new representative set. |
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* <p> |
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* This method is thread safe, although most Swing methods |
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* are not. Please see |
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* <A HREF="http://download.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency |
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* in Swing</A> for more information. |
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* |
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* @param old the old attribute set |
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* @param name the non-null attribute name |
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* @param value the attribute value |
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* @return the updated attribute set |
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* @see MutableAttributeSet#addAttribute |
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*/ |
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public synchronized AttributeSet addAttribute(AttributeSet old, Object name, Object value) { |
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if ((old.getAttributeCount() + 1) <= getCompressionThreshold()) { |
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// build a search key and find/create an immutable and unique |
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// set. |
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search.removeAttributes(search); |
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search.addAttributes(old); |
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search.addAttribute(name, value); |
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reclaim(old); |
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return getImmutableUniqueSet(); |
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} |
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MutableAttributeSet ma = getMutableAttributeSet(old); |
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ma.addAttribute(name, value); |
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return ma; |
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} |
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/** |
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* Adds a set of attributes to the element. |
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* <p> |
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* This method is thread safe, although most Swing methods |
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* are not. Please see |
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* <A HREF="http://download.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency |
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* in Swing</A> for more information. |
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* |
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* @param old the old attribute set |
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* @param attr the attributes to add |
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* @return the updated attribute set |
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* @see MutableAttributeSet#addAttribute |
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*/ |
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public synchronized AttributeSet addAttributes(AttributeSet old, AttributeSet attr) { |
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if ((old.getAttributeCount() + attr.getAttributeCount()) <= getCompressionThreshold()) { |
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// build a search key and find/create an immutable and unique |
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// set. |
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search.removeAttributes(search); |
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search.addAttributes(old); |
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search.addAttributes(attr); |
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reclaim(old); |
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return getImmutableUniqueSet(); |
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} |
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MutableAttributeSet ma = getMutableAttributeSet(old); |
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ma.addAttributes(attr); |
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return ma; |
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} |
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/** |
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* Removes an attribute from the set. |
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* <p> |
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* This method is thread safe, although most Swing methods |
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* are not. Please see |
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* <A HREF="http://download.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency |
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* in Swing</A> for more information. |
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* |
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* @param old the old set of attributes |
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* @param name the non-null attribute name |
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* @return the updated attribute set |
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* @see MutableAttributeSet#removeAttribute |
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*/ |
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public synchronized AttributeSet removeAttribute(AttributeSet old, Object name) { |
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if ((old.getAttributeCount() - 1) <= getCompressionThreshold()) { |
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// build a search key and find/create an immutable and unique |
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// set. |
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search.removeAttributes(search); |
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search.addAttributes(old); |
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search.removeAttribute(name); |
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reclaim(old); |
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return getImmutableUniqueSet(); |
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} |
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MutableAttributeSet ma = getMutableAttributeSet(old); |
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ma.removeAttribute(name); |
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return ma; |
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} |
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/** |
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* Removes a set of attributes for the element. |
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* <p> |
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* This method is thread safe, although most Swing methods |
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* are not. Please see |
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* <A HREF="http://download.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency |
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* in Swing</A> for more information. |
2 | 382 |
* |
383 |
* @param old the old attribute set |
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* @param names the attribute names |
|
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* @return the updated attribute set |
|
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* @see MutableAttributeSet#removeAttributes |
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*/ |
|
388 |
public synchronized AttributeSet removeAttributes(AttributeSet old, Enumeration<?> names) { |
|
389 |
if (old.getAttributeCount() <= getCompressionThreshold()) { |
|
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// build a search key and find/create an immutable and unique |
|
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// set. |
|
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search.removeAttributes(search); |
|
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search.addAttributes(old); |
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search.removeAttributes(names); |
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reclaim(old); |
|
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return getImmutableUniqueSet(); |
|
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} |
|
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MutableAttributeSet ma = getMutableAttributeSet(old); |
|
399 |
ma.removeAttributes(names); |
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return ma; |
|
401 |
} |
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402 |
||
403 |
/** |
|
404 |
* Removes a set of attributes for the element. |
|
405 |
* <p> |
|
406 |
* This method is thread safe, although most Swing methods |
|
407 |
* are not. Please see |
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diff
changeset
|
408 |
* <A HREF="http://download.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency |
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|
409 |
* in Swing</A> for more information. |
2 | 410 |
* |
411 |
* @param old the old attribute set |
|
412 |
* @param attrs the attributes |
|
413 |
* @return the updated attribute set |
|
414 |
* @see MutableAttributeSet#removeAttributes |
|
415 |
*/ |
|
416 |
public synchronized AttributeSet removeAttributes(AttributeSet old, AttributeSet attrs) { |
|
417 |
if (old.getAttributeCount() <= getCompressionThreshold()) { |
|
418 |
// build a search key and find/create an immutable and unique |
|
419 |
// set. |
|
420 |
search.removeAttributes(search); |
|
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search.addAttributes(old); |
|
422 |
search.removeAttributes(attrs); |
|
423 |
reclaim(old); |
|
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return getImmutableUniqueSet(); |
|
425 |
} |
|
426 |
MutableAttributeSet ma = getMutableAttributeSet(old); |
|
427 |
ma.removeAttributes(attrs); |
|
428 |
return ma; |
|
429 |
} |
|
430 |
||
431 |
/** |
|
432 |
* Fetches an empty AttributeSet. |
|
433 |
* |
|
434 |
* @return the set |
|
435 |
*/ |
|
436 |
public AttributeSet getEmptySet() { |
|
437 |
return SimpleAttributeSet.EMPTY; |
|
438 |
} |
|
439 |
||
440 |
/** |
|
441 |
* Returns a set no longer needed by the MutableAttributeSet implmentation. |
|
442 |
* This is useful for operation under 1.1 where there are no weak |
|
443 |
* references. This would typically be called by the finalize method |
|
444 |
* of the MutableAttributeSet implementation. |
|
445 |
* <p> |
|
446 |
* This method is thread safe, although most Swing methods |
|
447 |
* are not. Please see |
|
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diff
changeset
|
448 |
* <A HREF="http://download.oracle.com/javase/tutorial/uiswing/concurrency/index.html">Concurrency |
8d1ca7d93fb2
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diff
changeset
|
449 |
* in Swing</A> for more information. |
2 | 450 |
* |
451 |
* @param a the set to reclaim |
|
452 |
*/ |
|
453 |
public void reclaim(AttributeSet a) { |
|
454 |
if (SwingUtilities.isEventDispatchThread()) { |
|
455 |
attributesPool.size(); // force WeakHashMap to expunge stale entries |
|
456 |
} |
|
457 |
// if current thread is not event dispatching thread |
|
458 |
// do not bother with expunging stale entries. |
|
459 |
} |
|
460 |
||
461 |
// --- local methods ----------------------------------------------- |
|
462 |
||
463 |
/** |
|
464 |
* Returns the maximum number of key/value pairs to try and |
|
465 |
* compress into unique/immutable sets. Any sets above this |
|
466 |
* limit will use hashtables and be a MutableAttributeSet. |
|
467 |
* |
|
468 |
* @return the threshold |
|
469 |
*/ |
|
470 |
protected int getCompressionThreshold() { |
|
471 |
return THRESHOLD; |
|
472 |
} |
|
473 |
||
474 |
/** |
|
475 |
* Create a compact set of attributes that might be shared. |
|
476 |
* This is a hook for subclasses that want to alter the |
|
477 |
* behavior of SmallAttributeSet. This can be reimplemented |
|
478 |
* to return an AttributeSet that provides some sort of |
|
479 |
* attribute conversion. |
|
480 |
* |
|
481 |
* @param a The set of attributes to be represented in the |
|
482 |
* the compact form. |
|
483 |
*/ |
|
484 |
protected SmallAttributeSet createSmallAttributeSet(AttributeSet a) { |
|
485 |
return new SmallAttributeSet(a); |
|
486 |
} |
|
487 |
||
488 |
/** |
|
489 |
* Create a large set of attributes that should trade off |
|
490 |
* space for time. This set will not be shared. This is |
|
491 |
* a hook for subclasses that want to alter the behavior |
|
492 |
* of the larger attribute storage format (which is |
|
493 |
* SimpleAttributeSet by default). This can be reimplemented |
|
494 |
* to return a MutableAttributeSet that provides some sort of |
|
495 |
* attribute conversion. |
|
496 |
* |
|
497 |
* @param a The set of attributes to be represented in the |
|
498 |
* the larger form. |
|
499 |
*/ |
|
500 |
protected MutableAttributeSet createLargeAttributeSet(AttributeSet a) { |
|
501 |
return new SimpleAttributeSet(a); |
|
502 |
} |
|
503 |
||
504 |
/** |
|
505 |
* Clean the unused immutable sets out of the hashtable. |
|
506 |
*/ |
|
507 |
synchronized void removeUnusedSets() { |
|
508 |
attributesPool.size(); // force WeakHashMap to expunge stale entries |
|
509 |
} |
|
510 |
||
511 |
/** |
|
512 |
* Search for an existing attribute set using the current search |
|
513 |
* parameters. If a matching set is found, return it. If a match |
|
514 |
* is not found, we create a new set and add it to the pool. |
|
515 |
*/ |
|
516 |
AttributeSet getImmutableUniqueSet() { |
|
517 |
// PENDING(prinz) should consider finding a alternative to |
|
518 |
// generating extra garbage on search key. |
|
519 |
SmallAttributeSet key = createSmallAttributeSet(search); |
|
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changeset
|
520 |
WeakReference<SmallAttributeSet> reference = attributesPool.get(key); |
2 | 521 |
SmallAttributeSet a; |
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diff
changeset
|
522 |
if (reference == null || (a = reference.get()) == null) { |
2 | 523 |
a = key; |
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diff
changeset
|
524 |
attributesPool.put(a, new WeakReference<SmallAttributeSet>(a)); |
2 | 525 |
} |
526 |
return a; |
|
527 |
} |
|
528 |
||
529 |
/** |
|
530 |
* Creates a mutable attribute set to hand out because the current |
|
531 |
* needs are too big to try and use a shared version. |
|
532 |
*/ |
|
533 |
MutableAttributeSet getMutableAttributeSet(AttributeSet a) { |
|
534 |
if (a instanceof MutableAttributeSet && |
|
535 |
a != SimpleAttributeSet.EMPTY) { |
|
536 |
return (MutableAttributeSet) a; |
|
537 |
} |
|
538 |
return createLargeAttributeSet(a); |
|
539 |
} |
|
540 |
||
541 |
/** |
|
542 |
* Converts a StyleContext to a String. |
|
543 |
* |
|
544 |
* @return the string |
|
545 |
*/ |
|
546 |
public String toString() { |
|
547 |
removeUnusedSets(); |
|
548 |
String s = ""; |
|
1287
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rupashka
parents:
2
diff
changeset
|
549 |
for (SmallAttributeSet set : attributesPool.keySet()) { |
2 | 550 |
s = s + set + "\n"; |
551 |
} |
|
552 |
return s; |
|
553 |
} |
|
554 |
||
555 |
// --- serialization --------------------------------------------- |
|
556 |
||
557 |
/** |
|
558 |
* Context-specific handling of writing out attributes |
|
559 |
*/ |
|
560 |
public void writeAttributes(ObjectOutputStream out, |
|
561 |
AttributeSet a) throws IOException { |
|
562 |
writeAttributeSet(out, a); |
|
563 |
} |
|
564 |
||
565 |
/** |
|
566 |
* Context-specific handling of reading in attributes |
|
567 |
*/ |
|
568 |
public void readAttributes(ObjectInputStream in, |
|
569 |
MutableAttributeSet a) throws ClassNotFoundException, IOException { |
|
570 |
readAttributeSet(in, a); |
|
571 |
} |
|
572 |
||
573 |
/** |
|
574 |
* Writes a set of attributes to the given object stream |
|
575 |
* for the purpose of serialization. This will take |
|
576 |
* special care to deal with static attribute keys that |
|
577 |
* have been registered wit the |
|
578 |
* <code>registerStaticAttributeKey</code> method. |
|
579 |
* Any attribute key not regsitered as a static key |
|
580 |
* will be serialized directly. All values are expected |
|
581 |
* to be serializable. |
|
582 |
* |
|
583 |
* @param out the output stream |
|
584 |
* @param a the attribute set |
|
585 |
* @exception IOException on any I/O error |
|
586 |
*/ |
|
587 |
public static void writeAttributeSet(ObjectOutputStream out, |
|
588 |
AttributeSet a) throws IOException { |
|
589 |
int n = a.getAttributeCount(); |
|
590 |
out.writeInt(n); |
|
591 |
Enumeration keys = a.getAttributeNames(); |
|
592 |
while (keys.hasMoreElements()) { |
|
593 |
Object key = keys.nextElement(); |
|
594 |
if (key instanceof Serializable) { |
|
595 |
out.writeObject(key); |
|
596 |
} else { |
|
597 |
Object ioFmt = freezeKeyMap.get(key); |
|
598 |
if (ioFmt == null) { |
|
599 |
throw new NotSerializableException(key.getClass(). |
|
600 |
getName() + " is not serializable as a key in an AttributeSet"); |
|
601 |
} |
|
602 |
out.writeObject(ioFmt); |
|
603 |
} |
|
604 |
Object value = a.getAttribute(key); |
|
605 |
Object ioFmt = freezeKeyMap.get(value); |
|
606 |
if (value instanceof Serializable) { |
|
607 |
out.writeObject((ioFmt != null) ? ioFmt : value); |
|
608 |
} else { |
|
609 |
if (ioFmt == null) { |
|
610 |
throw new NotSerializableException(value.getClass(). |
|
611 |
getName() + " is not serializable as a value in an AttributeSet"); |
|
612 |
} |
|
613 |
out.writeObject(ioFmt); |
|
614 |
} |
|
615 |
} |
|
616 |
} |
|
617 |
||
618 |
/** |
|
619 |
* Reads a set of attributes from the given object input |
|
620 |
* stream that have been previously written out with |
|
621 |
* <code>writeAttributeSet</code>. This will try to restore |
|
622 |
* keys that were static objects to the static objects in |
|
623 |
* the current virtual machine considering only those keys |
|
624 |
* that have been registered with the |
|
625 |
* <code>registerStaticAttributeKey</code> method. |
|
626 |
* The attributes retrieved from the stream will be placed |
|
627 |
* into the given mutable set. |
|
628 |
* |
|
629 |
* @param in the object stream to read the attribute data from. |
|
630 |
* @param a the attribute set to place the attribute |
|
631 |
* definitions in. |
|
632 |
* @exception ClassNotFoundException passed upward if encountered |
|
633 |
* when reading the object stream. |
|
634 |
* @exception IOException passed upward if encountered when |
|
635 |
* reading the object stream. |
|
636 |
*/ |
|
637 |
public static void readAttributeSet(ObjectInputStream in, |
|
638 |
MutableAttributeSet a) throws ClassNotFoundException, IOException { |
|
639 |
||
640 |
int n = in.readInt(); |
|
641 |
for (int i = 0; i < n; i++) { |
|
642 |
Object key = in.readObject(); |
|
643 |
Object value = in.readObject(); |
|
644 |
if (thawKeyMap != null) { |
|
645 |
Object staticKey = thawKeyMap.get(key); |
|
646 |
if (staticKey != null) { |
|
647 |
key = staticKey; |
|
648 |
} |
|
649 |
Object staticValue = thawKeyMap.get(value); |
|
650 |
if (staticValue != null) { |
|
651 |
value = staticValue; |
|
652 |
} |
|
653 |
} |
|
654 |
a.addAttribute(key, value); |
|
655 |
} |
|
656 |
} |
|
657 |
||
658 |
/** |
|
659 |
* Registers an object as a static object that is being |
|
660 |
* used as a key in attribute sets. This allows the key |
|
661 |
* to be treated specially for serialization. |
|
662 |
* <p> |
|
663 |
* For operation under a 1.1 virtual machine, this |
|
664 |
* uses the value returned by <code>toString</code> |
|
665 |
* concatenated to the classname. The value returned |
|
666 |
* by toString should not have the class reference |
|
667 |
* in it (ie it should be reimplemented from the |
|
668 |
* definition in Object) in order to be the same when |
|
669 |
* recomputed later. |
|
670 |
* |
|
671 |
* @param key the non-null object key |
|
672 |
*/ |
|
673 |
public static void registerStaticAttributeKey(Object key) { |
|
674 |
String ioFmt = key.getClass().getName() + "." + key.toString(); |
|
675 |
if (freezeKeyMap == null) { |
|
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
676 |
freezeKeyMap = new Hashtable<Object, String>(); |
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
677 |
thawKeyMap = new Hashtable<String, Object>(); |
2 | 678 |
} |
679 |
freezeKeyMap.put(key, ioFmt); |
|
680 |
thawKeyMap.put(ioFmt, key); |
|
681 |
} |
|
682 |
||
683 |
/** |
|
684 |
* Returns the object previously registered with |
|
685 |
* <code>registerStaticAttributeKey</code>. |
|
686 |
*/ |
|
687 |
public static Object getStaticAttribute(Object key) { |
|
688 |
if (thawKeyMap == null || key == null) { |
|
689 |
return null; |
|
690 |
} |
|
691 |
return thawKeyMap.get(key); |
|
692 |
} |
|
693 |
||
694 |
/** |
|
695 |
* Returns the String that <code>key</code> will be registered with |
|
696 |
* @see #getStaticAttribute |
|
697 |
* @see #registerStaticAttributeKey |
|
698 |
*/ |
|
699 |
public static Object getStaticAttributeKey(Object key) { |
|
700 |
return key.getClass().getName() + "." + key.toString(); |
|
701 |
} |
|
702 |
||
703 |
private void writeObject(java.io.ObjectOutputStream s) |
|
704 |
throws IOException |
|
705 |
{ |
|
706 |
// clean out unused sets before saving |
|
707 |
removeUnusedSets(); |
|
708 |
||
709 |
s.defaultWriteObject(); |
|
710 |
} |
|
711 |
||
712 |
private void readObject(ObjectInputStream s) |
|
713 |
throws ClassNotFoundException, IOException |
|
714 |
{ |
|
715 |
fontSearch = new FontKey(null, 0, 0); |
|
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
716 |
fontTable = new Hashtable<FontKey, Font>(); |
2 | 717 |
search = new SimpleAttributeSet(); |
718 |
attributesPool = Collections. |
|
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
719 |
synchronizedMap(new WeakHashMap<SmallAttributeSet, WeakReference<SmallAttributeSet>>()); |
2 | 720 |
s.defaultReadObject(); |
721 |
} |
|
722 |
||
723 |
// --- variables --------------------------------------------------- |
|
724 |
||
725 |
/** |
|
726 |
* The name given to the default logical style attached |
|
727 |
* to paragraphs. |
|
728 |
*/ |
|
729 |
public static final String DEFAULT_STYLE = "default"; |
|
730 |
||
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
731 |
private static Hashtable<Object, String> freezeKeyMap; |
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
732 |
private static Hashtable<String, Object> thawKeyMap; |
2 | 733 |
|
734 |
private Style styles; |
|
735 |
private transient FontKey fontSearch = new FontKey(null, 0, 0); |
|
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
736 |
private transient Hashtable<FontKey, Font> fontTable = new Hashtable<FontKey, Font>(); |
2 | 737 |
|
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
738 |
private transient Map<SmallAttributeSet, WeakReference<SmallAttributeSet>> attributesPool = Collections. |
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
739 |
synchronizedMap(new WeakHashMap<SmallAttributeSet, WeakReference<SmallAttributeSet>>()); |
2 | 740 |
private transient MutableAttributeSet search = new SimpleAttributeSet(); |
741 |
||
742 |
/** |
|
743 |
* Number of immutable sets that are not currently |
|
744 |
* being used. This helps indicate when the sets need |
|
745 |
* to be cleaned out of the hashtable they are stored |
|
746 |
* in. |
|
747 |
*/ |
|
748 |
private int unusedSets; |
|
749 |
||
750 |
/** |
|
751 |
* The threshold for no longer sharing the set of attributes |
|
752 |
* in an immutable table. |
|
753 |
*/ |
|
754 |
static final int THRESHOLD = 9; |
|
755 |
||
756 |
/** |
|
757 |
* This class holds a small number of attributes in an array. |
|
758 |
* The storage format is key, value, key, value, etc. The size |
|
759 |
* of the set is the length of the array divided by two. By |
|
760 |
* default, this is the class that will be used to store attributes |
|
761 |
* when held in the compact sharable form. |
|
762 |
*/ |
|
763 |
public class SmallAttributeSet implements AttributeSet { |
|
764 |
||
765 |
public SmallAttributeSet(Object[] attributes) { |
|
766 |
this.attributes = attributes; |
|
767 |
updateResolveParent(); |
|
768 |
} |
|
769 |
||
770 |
public SmallAttributeSet(AttributeSet attrs) { |
|
771 |
int n = attrs.getAttributeCount(); |
|
772 |
Object[] tbl = new Object[2 * n]; |
|
773 |
Enumeration names = attrs.getAttributeNames(); |
|
774 |
int i = 0; |
|
775 |
while (names.hasMoreElements()) { |
|
776 |
tbl[i] = names.nextElement(); |
|
777 |
tbl[i+1] = attrs.getAttribute(tbl[i]); |
|
778 |
i += 2; |
|
779 |
} |
|
780 |
attributes = tbl; |
|
781 |
updateResolveParent(); |
|
782 |
} |
|
783 |
||
784 |
private void updateResolveParent() { |
|
785 |
resolveParent = null; |
|
786 |
Object[] tbl = attributes; |
|
787 |
for (int i = 0; i < tbl.length; i += 2) { |
|
788 |
if (tbl[i] == StyleConstants.ResolveAttribute) { |
|
789 |
resolveParent = (AttributeSet)tbl[i + 1]; |
|
790 |
break; |
|
791 |
} |
|
792 |
} |
|
793 |
} |
|
794 |
||
795 |
Object getLocalAttribute(Object nm) { |
|
796 |
if (nm == StyleConstants.ResolveAttribute) { |
|
797 |
return resolveParent; |
|
798 |
} |
|
799 |
Object[] tbl = attributes; |
|
800 |
for (int i = 0; i < tbl.length; i += 2) { |
|
801 |
if (nm.equals(tbl[i])) { |
|
802 |
return tbl[i+1]; |
|
803 |
} |
|
804 |
} |
|
805 |
return null; |
|
806 |
} |
|
807 |
||
808 |
// --- Object methods ------------------------- |
|
809 |
||
810 |
/** |
|
811 |
* Returns a string showing the key/value pairs |
|
812 |
*/ |
|
813 |
public String toString() { |
|
814 |
String s = "{"; |
|
815 |
Object[] tbl = attributes; |
|
816 |
for (int i = 0; i < tbl.length; i += 2) { |
|
817 |
if (tbl[i+1] instanceof AttributeSet) { |
|
818 |
// don't recurse |
|
819 |
s = s + tbl[i] + "=" + "AttributeSet" + ","; |
|
820 |
} else { |
|
821 |
s = s + tbl[i] + "=" + tbl[i+1] + ","; |
|
822 |
} |
|
823 |
} |
|
824 |
s = s + "}"; |
|
825 |
return s; |
|
826 |
} |
|
827 |
||
828 |
/** |
|
829 |
* Returns a hashcode for this set of attributes. |
|
830 |
* @return a hashcode value for this set of attributes. |
|
831 |
*/ |
|
832 |
public int hashCode() { |
|
833 |
int code = 0; |
|
834 |
Object[] tbl = attributes; |
|
835 |
for (int i = 1; i < tbl.length; i += 2) { |
|
836 |
code ^= tbl[i].hashCode(); |
|
837 |
} |
|
838 |
return code; |
|
839 |
} |
|
840 |
||
841 |
/** |
|
842 |
* Compares this object to the specifed object. |
|
843 |
* The result is <code>true</code> if the object is an equivalent |
|
844 |
* set of attributes. |
|
845 |
* @param obj the object to compare with. |
|
846 |
* @return <code>true</code> if the objects are equal; |
|
847 |
* <code>false</code> otherwise. |
|
848 |
*/ |
|
849 |
public boolean equals(Object obj) { |
|
850 |
if (obj instanceof AttributeSet) { |
|
851 |
AttributeSet attrs = (AttributeSet) obj; |
|
852 |
return ((getAttributeCount() == attrs.getAttributeCount()) && |
|
853 |
containsAttributes(attrs)); |
|
854 |
} |
|
855 |
return false; |
|
856 |
} |
|
857 |
||
858 |
/** |
|
859 |
* Clones a set of attributes. Since the set is immutable, a |
|
860 |
* clone is basically the same set. |
|
861 |
* |
|
862 |
* @return the set of attributes |
|
863 |
*/ |
|
864 |
public Object clone() { |
|
865 |
return this; |
|
866 |
} |
|
867 |
||
868 |
// --- AttributeSet methods ---------------------------- |
|
869 |
||
870 |
/** |
|
871 |
* Gets the number of attributes that are defined. |
|
872 |
* |
|
873 |
* @return the number of attributes |
|
874 |
* @see AttributeSet#getAttributeCount |
|
875 |
*/ |
|
876 |
public int getAttributeCount() { |
|
877 |
return attributes.length / 2; |
|
878 |
} |
|
879 |
||
880 |
/** |
|
881 |
* Checks whether a given attribute is defined. |
|
882 |
* |
|
883 |
* @param key the attribute key |
|
884 |
* @return true if the attribute is defined |
|
885 |
* @see AttributeSet#isDefined |
|
886 |
*/ |
|
887 |
public boolean isDefined(Object key) { |
|
888 |
Object[] a = attributes; |
|
889 |
int n = a.length; |
|
890 |
for (int i = 0; i < n; i += 2) { |
|
891 |
if (key.equals(a[i])) { |
|
892 |
return true; |
|
893 |
} |
|
894 |
} |
|
895 |
return false; |
|
896 |
} |
|
897 |
||
898 |
/** |
|
899 |
* Checks whether two attribute sets are equal. |
|
900 |
* |
|
901 |
* @param attr the attribute set to check against |
|
902 |
* @return true if the same |
|
903 |
* @see AttributeSet#isEqual |
|
904 |
*/ |
|
905 |
public boolean isEqual(AttributeSet attr) { |
|
906 |
if (attr instanceof SmallAttributeSet) { |
|
907 |
return attr == this; |
|
908 |
} |
|
909 |
return ((getAttributeCount() == attr.getAttributeCount()) && |
|
910 |
containsAttributes(attr)); |
|
911 |
} |
|
912 |
||
913 |
/** |
|
914 |
* Copies a set of attributes. |
|
915 |
* |
|
916 |
* @return the copy |
|
917 |
* @see AttributeSet#copyAttributes |
|
918 |
*/ |
|
919 |
public AttributeSet copyAttributes() { |
|
920 |
return this; |
|
921 |
} |
|
922 |
||
923 |
/** |
|
924 |
* Gets the value of an attribute. |
|
925 |
* |
|
926 |
* @param key the attribute name |
|
927 |
* @return the attribute value |
|
928 |
* @see AttributeSet#getAttribute |
|
929 |
*/ |
|
930 |
public Object getAttribute(Object key) { |
|
931 |
Object value = getLocalAttribute(key); |
|
932 |
if (value == null) { |
|
933 |
AttributeSet parent = getResolveParent(); |
|
934 |
if (parent != null) |
|
935 |
value = parent.getAttribute(key); |
|
936 |
} |
|
937 |
return value; |
|
938 |
} |
|
939 |
||
940 |
/** |
|
941 |
* Gets the names of all attributes. |
|
942 |
* |
|
943 |
* @return the attribute names |
|
944 |
* @see AttributeSet#getAttributeNames |
|
945 |
*/ |
|
946 |
public Enumeration<?> getAttributeNames() { |
|
947 |
return new KeyEnumeration(attributes); |
|
948 |
} |
|
949 |
||
950 |
/** |
|
951 |
* Checks whether a given attribute name/value is defined. |
|
952 |
* |
|
953 |
* @param name the attribute name |
|
954 |
* @param value the attribute value |
|
955 |
* @return true if the name/value is defined |
|
956 |
* @see AttributeSet#containsAttribute |
|
957 |
*/ |
|
958 |
public boolean containsAttribute(Object name, Object value) { |
|
959 |
return value.equals(getAttribute(name)); |
|
960 |
} |
|
961 |
||
962 |
/** |
|
963 |
* Checks whether the attribute set contains all of |
|
964 |
* the given attributes. |
|
965 |
* |
|
966 |
* @param attrs the attributes to check |
|
967 |
* @return true if the element contains all the attributes |
|
968 |
* @see AttributeSet#containsAttributes |
|
969 |
*/ |
|
970 |
public boolean containsAttributes(AttributeSet attrs) { |
|
971 |
boolean result = true; |
|
972 |
||
973 |
Enumeration names = attrs.getAttributeNames(); |
|
974 |
while (result && names.hasMoreElements()) { |
|
975 |
Object name = names.nextElement(); |
|
976 |
result = attrs.getAttribute(name).equals(getAttribute(name)); |
|
977 |
} |
|
978 |
||
979 |
return result; |
|
980 |
} |
|
981 |
||
982 |
/** |
|
983 |
* If not overriden, the resolving parent defaults to |
|
984 |
* the parent element. |
|
985 |
* |
|
986 |
* @return the attributes from the parent |
|
987 |
* @see AttributeSet#getResolveParent |
|
988 |
*/ |
|
989 |
public AttributeSet getResolveParent() { |
|
990 |
return resolveParent; |
|
991 |
} |
|
992 |
||
993 |
// --- variables ----------------------------------------- |
|
994 |
||
995 |
Object[] attributes; |
|
996 |
// This is also stored in attributes |
|
997 |
AttributeSet resolveParent; |
|
998 |
} |
|
999 |
||
1000 |
/** |
|
1001 |
* An enumeration of the keys in a SmallAttributeSet. |
|
1002 |
*/ |
|
1003 |
class KeyEnumeration implements Enumeration<Object> { |
|
1004 |
||
1005 |
KeyEnumeration(Object[] attr) { |
|
1006 |
this.attr = attr; |
|
1007 |
i = 0; |
|
1008 |
} |
|
1009 |
||
1010 |
/** |
|
1011 |
* Tests if this enumeration contains more elements. |
|
1012 |
* |
|
1013 |
* @return <code>true</code> if this enumeration contains more elements; |
|
1014 |
* <code>false</code> otherwise. |
|
1015 |
* @since JDK1.0 |
|
1016 |
*/ |
|
1017 |
public boolean hasMoreElements() { |
|
1018 |
return i < attr.length; |
|
1019 |
} |
|
1020 |
||
1021 |
/** |
|
1022 |
* Returns the next element of this enumeration. |
|
1023 |
* |
|
1024 |
* @return the next element of this enumeration. |
|
1025 |
* @exception NoSuchElementException if no more elements exist. |
|
1026 |
* @since JDK1.0 |
|
1027 |
*/ |
|
1028 |
public Object nextElement() { |
|
1029 |
if (i < attr.length) { |
|
1030 |
Object o = attr[i]; |
|
1031 |
i += 2; |
|
1032 |
return o; |
|
1033 |
} |
|
1034 |
throw new NoSuchElementException(); |
|
1035 |
} |
|
1036 |
||
1037 |
Object[] attr; |
|
1038 |
int i; |
|
1039 |
} |
|
1040 |
||
1041 |
/** |
|
1042 |
* Sorts the key strings so that they can be very quickly compared |
|
1043 |
* in the attribute set searchs. |
|
1044 |
*/ |
|
1045 |
class KeyBuilder { |
|
1046 |
||
1047 |
public void initialize(AttributeSet a) { |
|
1048 |
if (a instanceof SmallAttributeSet) { |
|
1049 |
initialize(((SmallAttributeSet)a).attributes); |
|
1050 |
} else { |
|
1051 |
keys.removeAllElements(); |
|
1052 |
data.removeAllElements(); |
|
1053 |
Enumeration names = a.getAttributeNames(); |
|
1054 |
while (names.hasMoreElements()) { |
|
1055 |
Object name = names.nextElement(); |
|
1056 |
addAttribute(name, a.getAttribute(name)); |
|
1057 |
} |
|
1058 |
} |
|
1059 |
} |
|
1060 |
||
1061 |
/** |
|
1062 |
* Initialize with a set of already sorted |
|
1063 |
* keys (data from an existing SmallAttributeSet). |
|
1064 |
*/ |
|
1065 |
private void initialize(Object[] sorted) { |
|
1066 |
keys.removeAllElements(); |
|
1067 |
data.removeAllElements(); |
|
1068 |
int n = sorted.length; |
|
1069 |
for (int i = 0; i < n; i += 2) { |
|
1070 |
keys.addElement(sorted[i]); |
|
1071 |
data.addElement(sorted[i+1]); |
|
1072 |
} |
|
1073 |
} |
|
1074 |
||
1075 |
/** |
|
1076 |
* Creates a table of sorted key/value entries |
|
1077 |
* suitable for creation of an instance of |
|
1078 |
* SmallAttributeSet. |
|
1079 |
*/ |
|
1080 |
public Object[] createTable() { |
|
1081 |
int n = keys.size(); |
|
1082 |
Object[] tbl = new Object[2 * n]; |
|
1083 |
for (int i = 0; i < n; i ++) { |
|
1084 |
int offs = 2 * i; |
|
1085 |
tbl[offs] = keys.elementAt(i); |
|
1086 |
tbl[offs + 1] = data.elementAt(i); |
|
1087 |
} |
|
1088 |
return tbl; |
|
1089 |
} |
|
1090 |
||
1091 |
/** |
|
1092 |
* The number of key/value pairs contained |
|
1093 |
* in the current key being forged. |
|
1094 |
*/ |
|
1095 |
int getCount() { |
|
1096 |
return keys.size(); |
|
1097 |
} |
|
1098 |
||
1099 |
/** |
|
1100 |
* Adds a key/value to the set. |
|
1101 |
*/ |
|
1102 |
public void addAttribute(Object key, Object value) { |
|
1103 |
keys.addElement(key); |
|
1104 |
data.addElement(value); |
|
1105 |
} |
|
1106 |
||
1107 |
/** |
|
1108 |
* Adds a set of key/value pairs to the set. |
|
1109 |
*/ |
|
1110 |
public void addAttributes(AttributeSet attr) { |
|
1111 |
if (attr instanceof SmallAttributeSet) { |
|
1112 |
// avoid searching the keys, they are already interned. |
|
1113 |
Object[] tbl = ((SmallAttributeSet)attr).attributes; |
|
1114 |
int n = tbl.length; |
|
1115 |
for (int i = 0; i < n; i += 2) { |
|
1116 |
addAttribute(tbl[i], tbl[i+1]); |
|
1117 |
} |
|
1118 |
} else { |
|
1119 |
Enumeration names = attr.getAttributeNames(); |
|
1120 |
while (names.hasMoreElements()) { |
|
1121 |
Object name = names.nextElement(); |
|
1122 |
addAttribute(name, attr.getAttribute(name)); |
|
1123 |
} |
|
1124 |
} |
|
1125 |
} |
|
1126 |
||
1127 |
/** |
|
1128 |
* Removes the given name from the set. |
|
1129 |
*/ |
|
1130 |
public void removeAttribute(Object key) { |
|
1131 |
int n = keys.size(); |
|
1132 |
for (int i = 0; i < n; i++) { |
|
1133 |
if (keys.elementAt(i).equals(key)) { |
|
1134 |
keys.removeElementAt(i); |
|
1135 |
data.removeElementAt(i); |
|
1136 |
return; |
|
1137 |
} |
|
1138 |
} |
|
1139 |
} |
|
1140 |
||
1141 |
/** |
|
1142 |
* Removes the set of keys from the set. |
|
1143 |
*/ |
|
1144 |
public void removeAttributes(Enumeration names) { |
|
1145 |
while (names.hasMoreElements()) { |
|
1146 |
Object name = names.nextElement(); |
|
1147 |
removeAttribute(name); |
|
1148 |
} |
|
1149 |
} |
|
1150 |
||
1151 |
/** |
|
1152 |
* Removes the set of matching attributes from the set. |
|
1153 |
*/ |
|
1154 |
public void removeAttributes(AttributeSet attr) { |
|
1155 |
Enumeration names = attr.getAttributeNames(); |
|
1156 |
while (names.hasMoreElements()) { |
|
1157 |
Object name = names.nextElement(); |
|
1158 |
Object value = attr.getAttribute(name); |
|
1159 |
removeSearchAttribute(name, value); |
|
1160 |
} |
|
1161 |
} |
|
1162 |
||
1163 |
private void removeSearchAttribute(Object ikey, Object value) { |
|
1164 |
int n = keys.size(); |
|
1165 |
for (int i = 0; i < n; i++) { |
|
1166 |
if (keys.elementAt(i).equals(ikey)) { |
|
1167 |
if (data.elementAt(i).equals(value)) { |
|
1168 |
keys.removeElementAt(i); |
|
1169 |
data.removeElementAt(i); |
|
1170 |
} |
|
1171 |
return; |
|
1172 |
} |
|
1173 |
} |
|
1174 |
} |
|
1175 |
||
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
1176 |
private Vector<Object> keys = new Vector<Object>(); |
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
1177 |
private Vector<Object> data = new Vector<Object>(); |
2 | 1178 |
} |
1179 |
||
1180 |
/** |
|
1181 |
* key for a font table |
|
1182 |
*/ |
|
1183 |
static class FontKey { |
|
1184 |
||
1185 |
private String family; |
|
1186 |
private int style; |
|
1187 |
private int size; |
|
1188 |
||
1189 |
/** |
|
1190 |
* Constructs a font key. |
|
1191 |
*/ |
|
1192 |
public FontKey(String family, int style, int size) { |
|
1193 |
setValue(family, style, size); |
|
1194 |
} |
|
1195 |
||
1196 |
public void setValue(String family, int style, int size) { |
|
1197 |
this.family = (family != null) ? family.intern() : null; |
|
1198 |
this.style = style; |
|
1199 |
this.size = size; |
|
1200 |
} |
|
1201 |
||
1202 |
/** |
|
1203 |
* Returns a hashcode for this font. |
|
1204 |
* @return a hashcode value for this font. |
|
1205 |
*/ |
|
1206 |
public int hashCode() { |
|
1207 |
int fhash = (family != null) ? family.hashCode() : 0; |
|
1208 |
return fhash ^ style ^ size; |
|
1209 |
} |
|
1210 |
||
1211 |
/** |
|
1212 |
* Compares this object to the specifed object. |
|
1213 |
* The result is <code>true</code> if and only if the argument is not |
|
1214 |
* <code>null</code> and is a <code>Font</code> object with the same |
|
1215 |
* name, style, and point size as this font. |
|
1216 |
* @param obj the object to compare this font with. |
|
1217 |
* @return <code>true</code> if the objects are equal; |
|
1218 |
* <code>false</code> otherwise. |
|
1219 |
*/ |
|
1220 |
public boolean equals(Object obj) { |
|
1221 |
if (obj instanceof FontKey) { |
|
1222 |
FontKey font = (FontKey)obj; |
|
1223 |
return (size == font.size) && (style == font.style) && (family == font.family); |
|
1224 |
} |
|
1225 |
return false; |
|
1226 |
} |
|
1227 |
||
1228 |
} |
|
1229 |
||
1230 |
/** |
|
1231 |
* A collection of attributes, typically used to represent |
|
1232 |
* character and paragraph styles. This is an implementation |
|
1233 |
* of MutableAttributeSet that can be observed if desired. |
|
1234 |
* These styles will take advantage of immutability while |
|
1235 |
* the sets are small enough, and may be substantially more |
|
1236 |
* efficient than something like SimpleAttributeSet. |
|
1237 |
* <p> |
|
1238 |
* <strong>Warning:</strong> |
|
1239 |
* Serialized objects of this class will not be compatible with |
|
1240 |
* future Swing releases. The current serialization support is |
|
1241 |
* appropriate for short term storage or RMI between applications running |
|
1242 |
* the same version of Swing. As of 1.4, support for long term storage |
|
1243 |
* of all JavaBeans<sup><font size="-2">TM</font></sup> |
|
1244 |
* has been added to the <code>java.beans</code> package. |
|
1245 |
* Please see {@link java.beans.XMLEncoder}. |
|
1246 |
*/ |
|
1247 |
public class NamedStyle implements Style, Serializable { |
|
1248 |
||
1249 |
/** |
|
1250 |
* Creates a new named style. |
|
1251 |
* |
|
1252 |
* @param name the style name, null for unnamed |
|
1253 |
* @param parent the parent style, null if none |
|
1254 |
* @since 1.4 |
|
1255 |
*/ |
|
1256 |
public NamedStyle(String name, Style parent) { |
|
1257 |
attributes = getEmptySet(); |
|
1258 |
if (name != null) { |
|
1259 |
setName(name); |
|
1260 |
} |
|
1261 |
if (parent != null) { |
|
1262 |
setResolveParent(parent); |
|
1263 |
} |
|
1264 |
} |
|
1265 |
||
1266 |
/** |
|
1267 |
* Creates a new named style. |
|
1268 |
* |
|
1269 |
* @param parent the parent style, null if none |
|
1270 |
* @since 1.4 |
|
1271 |
*/ |
|
1272 |
public NamedStyle(Style parent) { |
|
1273 |
this(null, parent); |
|
1274 |
} |
|
1275 |
||
1276 |
/** |
|
1277 |
* Creates a new named style, with a null name and parent. |
|
1278 |
*/ |
|
1279 |
public NamedStyle() { |
|
1280 |
attributes = getEmptySet(); |
|
1281 |
} |
|
1282 |
||
1283 |
/** |
|
1284 |
* Converts the style to a string. |
|
1285 |
* |
|
1286 |
* @return the string |
|
1287 |
*/ |
|
1288 |
public String toString() { |
|
1289 |
return "NamedStyle:" + getName() + " " + attributes; |
|
1290 |
} |
|
1291 |
||
1292 |
/** |
|
1293 |
* Fetches the name of the style. A style is not required to be named, |
|
1294 |
* so null is returned if there is no name associated with the style. |
|
1295 |
* |
|
1296 |
* @return the name |
|
1297 |
*/ |
|
1298 |
public String getName() { |
|
1299 |
if (isDefined(StyleConstants.NameAttribute)) { |
|
1300 |
return getAttribute(StyleConstants.NameAttribute).toString(); |
|
1301 |
} |
|
1302 |
return null; |
|
1303 |
} |
|
1304 |
||
1305 |
/** |
|
1306 |
* Changes the name of the style. Does nothing with a null name. |
|
1307 |
* |
|
1308 |
* @param name the new name |
|
1309 |
*/ |
|
1310 |
public void setName(String name) { |
|
1311 |
if (name != null) { |
|
1312 |
this.addAttribute(StyleConstants.NameAttribute, name); |
|
1313 |
} |
|
1314 |
} |
|
1315 |
||
1316 |
/** |
|
1317 |
* Adds a change listener. |
|
1318 |
* |
|
1319 |
* @param l the change listener |
|
1320 |
*/ |
|
1321 |
public void addChangeListener(ChangeListener l) { |
|
1322 |
listenerList.add(ChangeListener.class, l); |
|
1323 |
} |
|
1324 |
||
1325 |
/** |
|
1326 |
* Removes a change listener. |
|
1327 |
* |
|
1328 |
* @param l the change listener |
|
1329 |
*/ |
|
1330 |
public void removeChangeListener(ChangeListener l) { |
|
1331 |
listenerList.remove(ChangeListener.class, l); |
|
1332 |
} |
|
1333 |
||
1334 |
||
1335 |
/** |
|
1336 |
* Returns an array of all the <code>ChangeListener</code>s added |
|
1337 |
* to this NamedStyle with addChangeListener(). |
|
1338 |
* |
|
1339 |
* @return all of the <code>ChangeListener</code>s added or an empty |
|
1340 |
* array if no listeners have been added |
|
1341 |
* @since 1.4 |
|
1342 |
*/ |
|
1343 |
public ChangeListener[] getChangeListeners() { |
|
1287
a04aca99c77a
6722802: Code improvement and warnings removing from the javax.swing.text package
rupashka
parents:
2
diff
changeset
|
1344 |
return listenerList.getListeners(ChangeListener.class); |
2 | 1345 |
} |
1346 |
||
1347 |
||
1348 |
/** |
|
1349 |
* Notifies all listeners that have registered interest for |
|
1350 |
* notification on this event type. The event instance |
|
1351 |
* is lazily created using the parameters passed into |
|
1352 |
* the fire method. |
|
1353 |
* |
|
1354 |
* @see EventListenerList |
|
1355 |
*/ |
|
1356 |
protected void fireStateChanged() { |
|
1357 |
// Guaranteed to return a non-null array |
|
1358 |
Object[] listeners = listenerList.getListenerList(); |
|
1359 |
// Process the listeners last to first, notifying |
|
1360 |
// those that are interested in this event |
|
1361 |
for (int i = listeners.length-2; i>=0; i-=2) { |
|
1362 |
if (listeners[i]==ChangeListener.class) { |
|
1363 |
// Lazily create the event: |
|
1364 |
if (changeEvent == null) |
|
1365 |
changeEvent = new ChangeEvent(this); |
|
1366 |
((ChangeListener)listeners[i+1]).stateChanged(changeEvent); |
|
1367 |
} |
|
1368 |
} |
|
1369 |
} |
|
1370 |
||
1371 |
/** |
|
1372 |
* Return an array of all the listeners of the given type that |
|
1373 |
* were added to this model. |
|
1374 |
* |
|
1375 |
* @return all of the objects receiving <em>listenerType</em> notifications |
|
1376 |
* from this model |
|
1377 |
* |
|
1378 |
* @since 1.3 |
|
1379 |
*/ |
|
1380 |
public <T extends EventListener> T[] getListeners(Class<T> listenerType) { |
|
1381 |
return listenerList.getListeners(listenerType); |
|
1382 |
} |
|
1383 |
||
1384 |
// --- AttributeSet ---------------------------- |
|
1385 |
// delegated to the immutable field "attributes" |
|
1386 |
||
1387 |
/** |
|
1388 |
* Gets the number of attributes that are defined. |
|
1389 |
* |
|
20158
1c5d22e5b898
8025117: [cleanup] Eliminate doclint errors in javax/swing/text classes
yan
parents:
10316
diff
changeset
|
1390 |
* @return the number of attributes >= 0 |
2 | 1391 |
* @see AttributeSet#getAttributeCount |
1392 |
*/ |
|
1393 |
public int getAttributeCount() { |
|
1394 |
return attributes.getAttributeCount(); |
|
1395 |
} |
|
1396 |
||
1397 |
/** |
|
1398 |
* Checks whether a given attribute is defined. |
|
1399 |
* |
|
1400 |
* @param attrName the non-null attribute name |
|
1401 |
* @return true if the attribute is defined |
|
1402 |
* @see AttributeSet#isDefined |
|
1403 |
*/ |
|
1404 |
public boolean isDefined(Object attrName) { |
|
1405 |
return attributes.isDefined(attrName); |
|
1406 |
} |
|
1407 |
||
1408 |
/** |
|
1409 |
* Checks whether two attribute sets are equal. |
|
1410 |
* |
|
1411 |
* @param attr the attribute set to check against |
|
1412 |
* @return true if the same |
|
1413 |
* @see AttributeSet#isEqual |
|
1414 |
*/ |
|
1415 |
public boolean isEqual(AttributeSet attr) { |
|
1416 |
return attributes.isEqual(attr); |
|
1417 |
} |
|
1418 |
||
1419 |
/** |
|
1420 |
* Copies a set of attributes. |
|
1421 |
* |
|
1422 |
* @return the copy |
|
1423 |
* @see AttributeSet#copyAttributes |
|
1424 |
*/ |
|
1425 |
public AttributeSet copyAttributes() { |
|
1426 |
NamedStyle a = new NamedStyle(); |
|
1427 |
a.attributes = attributes.copyAttributes(); |
|
1428 |
return a; |
|
1429 |
} |
|
1430 |
||
1431 |
/** |
|
1432 |
* Gets the value of an attribute. |
|
1433 |
* |
|
1434 |
* @param attrName the non-null attribute name |
|
1435 |
* @return the attribute value |
|
1436 |
* @see AttributeSet#getAttribute |
|
1437 |
*/ |
|
1438 |
public Object getAttribute(Object attrName) { |
|
1439 |
return attributes.getAttribute(attrName); |
|
1440 |
} |
|
1441 |
||
1442 |
/** |
|
1443 |
* Gets the names of all attributes. |
|
1444 |
* |
|
1445 |
* @return the attribute names as an enumeration |
|
1446 |
* @see AttributeSet#getAttributeNames |
|
1447 |
*/ |
|
1448 |
public Enumeration<?> getAttributeNames() { |
|
1449 |
return attributes.getAttributeNames(); |
|
1450 |
} |
|
1451 |
||
1452 |
/** |
|
1453 |
* Checks whether a given attribute name/value is defined. |
|
1454 |
* |
|
1455 |
* @param name the non-null attribute name |
|
1456 |
* @param value the attribute value |
|
1457 |
* @return true if the name/value is defined |
|
1458 |
* @see AttributeSet#containsAttribute |
|
1459 |
*/ |
|
1460 |
public boolean containsAttribute(Object name, Object value) { |
|
1461 |
return attributes.containsAttribute(name, value); |
|
1462 |
} |
|
1463 |
||
1464 |
||
1465 |
/** |
|
1466 |
* Checks whether the element contains all the attributes. |
|
1467 |
* |
|
1468 |
* @param attrs the attributes to check |
|
1469 |
* @return true if the element contains all the attributes |
|
1470 |
* @see AttributeSet#containsAttributes |
|
1471 |
*/ |
|
1472 |
public boolean containsAttributes(AttributeSet attrs) { |
|
1473 |
return attributes.containsAttributes(attrs); |
|
1474 |
} |
|
1475 |
||
1476 |
/** |
|
1477 |
* Gets attributes from the parent. |
|
1478 |
* If not overriden, the resolving parent defaults to |
|
1479 |
* the parent element. |
|
1480 |
* |
|
1481 |
* @return the attributes from the parent |
|
1482 |
* @see AttributeSet#getResolveParent |
|
1483 |
*/ |
|
1484 |
public AttributeSet getResolveParent() { |
|
1485 |
return attributes.getResolveParent(); |
|
1486 |
} |
|
1487 |
||
1488 |
// --- MutableAttributeSet ---------------------------------- |
|
1489 |
// should fetch a new immutable record for the field |
|
1490 |
// "attributes". |
|
1491 |
||
1492 |
/** |
|
1493 |
* Adds an attribute. |
|
1494 |
* |
|
1495 |
* @param name the non-null attribute name |
|
1496 |
* @param value the attribute value |
|
1497 |
* @see MutableAttributeSet#addAttribute |
|
1498 |
*/ |
|
1499 |
public void addAttribute(Object name, Object value) { |
|
1500 |
StyleContext context = StyleContext.this; |
|
1501 |
attributes = context.addAttribute(attributes, name, value); |
|
1502 |
fireStateChanged(); |
|
1503 |
} |
|
1504 |
||
1505 |
/** |
|
1506 |
* Adds a set of attributes to the element. |
|
1507 |
* |
|
1508 |
* @param attr the attributes to add |
|
1509 |
* @see MutableAttributeSet#addAttribute |
|
1510 |
*/ |
|
1511 |
public void addAttributes(AttributeSet attr) { |
|
1512 |
StyleContext context = StyleContext.this; |
|
1513 |
attributes = context.addAttributes(attributes, attr); |
|
1514 |
fireStateChanged(); |
|
1515 |
} |
|
1516 |
||
1517 |
/** |
|
1518 |
* Removes an attribute from the set. |
|
1519 |
* |
|
1520 |
* @param name the non-null attribute name |
|
1521 |
* @see MutableAttributeSet#removeAttribute |
|
1522 |
*/ |
|
1523 |
public void removeAttribute(Object name) { |
|
1524 |
StyleContext context = StyleContext.this; |
|
1525 |
attributes = context.removeAttribute(attributes, name); |
|
1526 |
fireStateChanged(); |
|
1527 |
} |
|
1528 |
||
1529 |
/** |
|
1530 |
* Removes a set of attributes for the element. |
|
1531 |
* |
|
1532 |
* @param names the attribute names |
|
1533 |
* @see MutableAttributeSet#removeAttributes |
|
1534 |
*/ |
|
1535 |
public void removeAttributes(Enumeration<?> names) { |
|
1536 |
StyleContext context = StyleContext.this; |
|
1537 |
attributes = context.removeAttributes(attributes, names); |
|
1538 |
fireStateChanged(); |
|
1539 |
} |
|
1540 |
||
1541 |
/** |
|
1542 |
* Removes a set of attributes for the element. |
|
1543 |
* |
|
1544 |
* @param attrs the attributes |
|
1545 |
* @see MutableAttributeSet#removeAttributes |
|
1546 |
*/ |
|
1547 |
public void removeAttributes(AttributeSet attrs) { |
|
1548 |
StyleContext context = StyleContext.this; |
|
1549 |
if (attrs == this) { |
|
1550 |
attributes = context.getEmptySet(); |
|
1551 |
} else { |
|
1552 |
attributes = context.removeAttributes(attributes, attrs); |
|
1553 |
} |
|
1554 |
fireStateChanged(); |
|
1555 |
} |
|
1556 |
||
1557 |
/** |
|
1558 |
* Sets the resolving parent. |
|
1559 |
* |
|
1560 |
* @param parent the parent, null if none |
|
1561 |
* @see MutableAttributeSet#setResolveParent |
|
1562 |
*/ |
|
1563 |
public void setResolveParent(AttributeSet parent) { |
|
1564 |
if (parent != null) { |
|
1565 |
addAttribute(StyleConstants.ResolveAttribute, parent); |
|
1566 |
} else { |
|
1567 |
removeAttribute(StyleConstants.ResolveAttribute); |
|
1568 |
} |
|
1569 |
} |
|
1570 |
||
1571 |
// --- serialization --------------------------------------------- |
|
1572 |
||
1573 |
private void writeObject(ObjectOutputStream s) throws IOException { |
|
1574 |
s.defaultWriteObject(); |
|
1575 |
writeAttributeSet(s, attributes); |
|
1576 |
} |
|
1577 |
||
1578 |
private void readObject(ObjectInputStream s) |
|
1579 |
throws ClassNotFoundException, IOException |
|
1580 |
{ |
|
1581 |
s.defaultReadObject(); |
|
1582 |
attributes = SimpleAttributeSet.EMPTY; |
|
1583 |
readAttributeSet(s, this); |
|
1584 |
} |
|
1585 |
||
1586 |
// --- member variables ----------------------------------------------- |
|
1587 |
||
1588 |
/** |
|
1589 |
* The change listeners for the model. |
|
1590 |
*/ |
|
1591 |
protected EventListenerList listenerList = new EventListenerList(); |
|
1592 |
||
1593 |
/** |
|
1594 |
* Only one ChangeEvent is needed per model instance since the |
|
1595 |
* event's only (read-only) state is the source property. The source |
|
1596 |
* of events generated here is always "this". |
|
1597 |
*/ |
|
1598 |
protected transient ChangeEvent changeEvent = null; |
|
1599 |
||
1600 |
/** |
|
1601 |
* Inner AttributeSet implementation, which may be an |
|
1602 |
* immutable unique set being shared. |
|
1603 |
*/ |
|
1604 |
private transient AttributeSet attributes; |
|
1605 |
||
1606 |
} |
|
1607 |
||
1608 |
static { |
|
1609 |
// initialize the static key registry with the StyleConstants keys |
|
1610 |
try { |
|
1611 |
int n = StyleConstants.keys.length; |
|
1612 |
for (int i = 0; i < n; i++) { |
|
1613 |
StyleContext.registerStaticAttributeKey(StyleConstants.keys[i]); |
|
1614 |
} |
|
1615 |
} catch (Throwable e) { |
|
1616 |
e.printStackTrace(); |
|
1617 |
} |
|
1618 |
} |
|
1619 |
||
1620 |
||
1621 |
} |