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package javax.swing.text;

import java.io.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.event.*;
import javax.swing.Action;
import javax.swing.JEditorPane;
import javax.swing.KeyStroke;
import javax.swing.UIManager;

This is the set of things needed by a text component to be a reasonably functioning editor for some type of text document. This implementation provides a default implementation which treats text as styled text and provides a minimal set of actions for editing styled text.
Author: Timothy Prinzing
/** * This is the set of things needed by a text component * to be a reasonably functioning editor for some <em>type</em> * of text document. This implementation provides a default * implementation which treats text as styled text and * provides a minimal set of actions for editing styled text. * * @author Timothy Prinzing */
public class StyledEditorKit extends DefaultEditorKit {
Creates a new EditorKit used for styled documents.
/** * Creates a new EditorKit used for styled documents. */
public StyledEditorKit() { createInputAttributeUpdated(); createInputAttributes(); }
Gets the input attributes for the pane. When the caret moves and there is no selection, the input attributes are automatically mutated to reflect the character attributes of the current caret location. The styled editing actions use the input attributes to carry out their actions.
Returns:the attribute set
/** * Gets the input attributes for the pane. When * the caret moves and there is no selection, the * input attributes are automatically mutated to * reflect the character attributes of the current * caret location. The styled editing actions * use the input attributes to carry out their * actions. * * @return the attribute set */
public MutableAttributeSet getInputAttributes() { return inputAttributes; }
Fetches the element representing the current run of character attributes for the caret.
Returns:the element
/** * Fetches the element representing the current * run of character attributes for the caret. * * @return the element */
public Element getCharacterAttributeRun() { return currentRun; } // --- EditorKit methods ---------------------------
Fetches the command list for the editor. This is the list of commands supported by the superclass augmented by the collection of commands defined locally for style operations.
Returns:the command list
/** * Fetches the command list for the editor. This is * the list of commands supported by the superclass * augmented by the collection of commands defined * locally for style operations. * * @return the command list */
public Action[] getActions() { return TextAction.augmentList(super.getActions(), this.defaultActions); }
Creates an uninitialized text storage model that is appropriate for this type of editor.
Returns:the model
/** * Creates an uninitialized text storage model * that is appropriate for this type of editor. * * @return the model */
public Document createDefaultDocument() { return new DefaultStyledDocument(); }
Called when the kit is being installed into a JEditorPane.
Params:
  • c – the JEditorPane
/** * Called when the kit is being installed into * a JEditorPane. * * @param c the JEditorPane */
public void install(JEditorPane c) { c.addCaretListener(inputAttributeUpdater); c.addPropertyChangeListener(inputAttributeUpdater); Caret caret = c.getCaret(); if (caret != null) { inputAttributeUpdater.updateInputAttributes (caret.getDot(), caret.getMark(), c); } }
Called when the kit is being removed from the JEditorPane. This is used to unregister any listeners that were attached.
Params:
  • c – the JEditorPane
/** * Called when the kit is being removed from the * JEditorPane. This is used to unregister any * listeners that were attached. * * @param c the JEditorPane */
public void deinstall(JEditorPane c) { c.removeCaretListener(inputAttributeUpdater); c.removePropertyChangeListener(inputAttributeUpdater); // remove references to current document so it can be collected. currentRun = null; currentParagraph = null; }
Fetches a factory that is suitable for producing views of any models that are produced by this kit. This is implemented to return View implementations for the following kinds of elements:
  • AbstractDocument.ContentElementName
  • AbstractDocument.ParagraphElementName
  • AbstractDocument.SectionElementName
  • StyleConstants.ComponentElementName
  • StyleConstants.IconElementName
Returns:the factory
/** * Fetches a factory that is suitable for producing * views of any models that are produced by this * kit. This is implemented to return View implementations * for the following kinds of elements: * <ul> * <li>AbstractDocument.ContentElementName * <li>AbstractDocument.ParagraphElementName * <li>AbstractDocument.SectionElementName * <li>StyleConstants.ComponentElementName * <li>StyleConstants.IconElementName * </ul> * * @return the factory */
public ViewFactory getViewFactory() { return defaultFactory; }
Creates a copy of the editor kit.
Returns:the copy
/** * Creates a copy of the editor kit. * * @return the copy */
public Object clone() { StyledEditorKit o = (StyledEditorKit)super.clone(); o.currentRun = o.currentParagraph = null; o.createInputAttributeUpdated(); o.createInputAttributes(); return o; }
Creates the AttributeSet used for the selection.
/** * Creates the AttributeSet used for the selection. */
private void createInputAttributes() { inputAttributes = new SimpleAttributeSet() { public AttributeSet getResolveParent() { return (currentParagraph != null) ? currentParagraph.getAttributes() : null; } public Object clone() { return new SimpleAttributeSet(this); } }; }
Creates a new AttributeTracker.
/** * Creates a new <code>AttributeTracker</code>. */
private void createInputAttributeUpdated() { inputAttributeUpdater = new AttributeTracker(); } private static final ViewFactory defaultFactory = new StyledViewFactory(); Element currentRun; Element currentParagraph;
This is the set of attributes used to store the input attributes.
/** * This is the set of attributes used to store the * input attributes. */
MutableAttributeSet inputAttributes;
This listener will be attached to the caret of the text component that the EditorKit gets installed into. This should keep the input attributes updated for use by the styled actions.
/** * This listener will be attached to the caret of * the text component that the EditorKit gets installed * into. This should keep the input attributes updated * for use by the styled actions. */
private AttributeTracker inputAttributeUpdater;
Tracks caret movement and keeps the input attributes set to reflect the current set of attribute definitions at the caret position.

This implements PropertyChangeListener to update the input attributes when the Document changes, as if the Document changes the attributes will almost certainly change.

/** * Tracks caret movement and keeps the input attributes set * to reflect the current set of attribute definitions at the * caret position. * <p>This implements PropertyChangeListener to update the * input attributes when the Document changes, as if the Document * changes the attributes will almost certainly change. */
class AttributeTracker implements CaretListener, PropertyChangeListener, Serializable {
Updates the attributes. dot and mark mark give the positions of the selection in c.
/** * Updates the attributes. <code>dot</code> and <code>mark</code> * mark give the positions of the selection in <code>c</code>. */
void updateInputAttributes(int dot, int mark, JTextComponent c) { // EditorKit might not have installed the StyledDocument yet. Document aDoc = c.getDocument(); if (!(aDoc instanceof StyledDocument)) { return ; } int start = Math.min(dot, mark); // record current character attributes. StyledDocument doc = (StyledDocument)aDoc; // If nothing is selected, get the attributes from the character // before the start of the selection, otherwise get the attributes // from the character element at the start of the selection. Element run; currentParagraph = doc.getParagraphElement(start); if (currentParagraph.getStartOffset() == start || dot != mark) { // Get the attributes from the character at the selection // if in a different paragrah! run = doc.getCharacterElement(start); } else { run = doc.getCharacterElement(Math.max(start-1, 0)); } if (run != currentRun) { /* * PENDING(prinz) All attributes that represent a single * glyph position and can't be inserted into should be * removed from the input attributes... this requires * mixing in an interface to indicate that condition. * When we can add things again this logic needs to be * improved!! */ currentRun = run; createInputAttributes(currentRun, getInputAttributes()); } } public void propertyChange(PropertyChangeEvent evt) { Object newValue = evt.getNewValue(); Object source = evt.getSource(); if ((source instanceof JTextComponent) && (newValue instanceof Document)) { // New document will have changed selection to 0,0. updateInputAttributes(0, 0, (JTextComponent)source); } } public void caretUpdate(CaretEvent e) { updateInputAttributes(e.getDot(), e.getMark(), (JTextComponent)e.getSource()); } }
Copies the key/values in elements AttributeSet into set. This does not copy component, icon, or element names attributes. Subclasses may wish to refine what is and what isn't copied here. But be sure to first remove all the attributes that are in set.

This is called anytime the caret moves over a different location.

/** * Copies the key/values in <code>element</code>s AttributeSet into * <code>set</code>. This does not copy component, icon, or element * names attributes. Subclasses may wish to refine what is and what * isn't copied here. But be sure to first remove all the attributes that * are in <code>set</code>.<p> * This is called anytime the caret moves over a different location. * */
protected void createInputAttributes(Element element, MutableAttributeSet set) { if (element.getAttributes().getAttributeCount() > 0 || element.getEndOffset() - element.getStartOffset() > 1 || element.getEndOffset() < element.getDocument().getLength()) { set.removeAttributes(set); set.addAttributes(element.getAttributes()); set.removeAttribute(StyleConstants.ComponentAttribute); set.removeAttribute(StyleConstants.IconAttribute); set.removeAttribute(AbstractDocument.ElementNameAttribute); set.removeAttribute(StyleConstants.ComposedTextAttribute); } } // ---- default ViewFactory implementation --------------------- static class StyledViewFactory implements ViewFactory { public View create(Element elem) { String kind = elem.getName(); if (kind != null) { if (kind.equals(AbstractDocument.ContentElementName)) { return new LabelView(elem); } else if (kind.equals(AbstractDocument.ParagraphElementName)) { return new ParagraphView(elem); } else if (kind.equals(AbstractDocument.SectionElementName)) { return new BoxView(elem, View.Y_AXIS); } else if (kind.equals(StyleConstants.ComponentElementName)) { return new ComponentView(elem); } else if (kind.equals(StyleConstants.IconElementName)) { return new IconView(elem); } } // default to text display return new LabelView(elem); } } // --- Action implementations --------------------------------- private static final Action[] defaultActions = { new FontFamilyAction("font-family-SansSerif", "SansSerif"), new FontFamilyAction("font-family-Monospaced", "Monospaced"), new FontFamilyAction("font-family-Serif", "Serif"), new FontSizeAction("font-size-8", 8), new FontSizeAction("font-size-10", 10), new FontSizeAction("font-size-12", 12), new FontSizeAction("font-size-14", 14), new FontSizeAction("font-size-16", 16), new FontSizeAction("font-size-18", 18), new FontSizeAction("font-size-24", 24), new FontSizeAction("font-size-36", 36), new FontSizeAction("font-size-48", 48), new AlignmentAction("left-justify", StyleConstants.ALIGN_LEFT), new AlignmentAction("center-justify", StyleConstants.ALIGN_CENTER), new AlignmentAction("right-justify", StyleConstants.ALIGN_RIGHT), new BoldAction(), new ItalicAction(), new StyledInsertBreakAction(), new UnderlineAction() };
An action that assumes it's being fired on a JEditorPane with a StyledEditorKit (or subclass) installed. This has some convenience methods for causing character or paragraph level attribute changes. The convenience methods will throw an IllegalArgumentException if the assumption of a StyledDocument, a JEditorPane, or a StyledEditorKit fail to be true.

The component that gets acted upon by the action will be the source of the ActionEvent if the source can be narrowed to a JEditorPane type. If the source can't be narrowed, the most recently focused text component is changed. If neither of these are the case, the action cannot be performed.

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

/** * An action that assumes it's being fired on a JEditorPane * with a StyledEditorKit (or subclass) installed. This has * some convenience methods for causing character or paragraph * level attribute changes. The convenience methods will * throw an IllegalArgumentException if the assumption of * a StyledDocument, a JEditorPane, or a StyledEditorKit * fail to be true. * <p> * The component that gets acted upon by the action * will be the source of the ActionEvent if the source * can be narrowed to a JEditorPane type. If the source * can't be narrowed, the most recently focused text * component is changed. If neither of these are the * case, the action cannot be performed. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public abstract static class StyledTextAction extends TextAction {
Creates a new StyledTextAction from a string action name.
Params:
  • nm – the name of the action
/** * Creates a new StyledTextAction from a string action name. * * @param nm the name of the action */
public StyledTextAction(String nm) { super(nm); }
Gets the target editor for an action.
Params:
  • e – the action event
Returns:the editor
/** * Gets the target editor for an action. * * @param e the action event * @return the editor */
protected final JEditorPane getEditor(ActionEvent e) { JTextComponent tcomp = getTextComponent(e); if (tcomp instanceof JEditorPane) { return (JEditorPane) tcomp; } return null; }
Gets the document associated with an editor pane.
Params:
  • e – the editor
Throws:
Returns:the document
/** * Gets the document associated with an editor pane. * * @param e the editor * @return the document * @exception IllegalArgumentException for the wrong document type */
protected final StyledDocument getStyledDocument(JEditorPane e) { Document d = e.getDocument(); if (d instanceof StyledDocument) { return (StyledDocument) d; } throw new IllegalArgumentException("document must be StyledDocument"); }
Gets the editor kit associated with an editor pane.
Params:
  • e – the editor pane
Throws:
Returns:the kit
/** * Gets the editor kit associated with an editor pane. * * @param e the editor pane * @return the kit * @exception IllegalArgumentException for the wrong document type */
protected final StyledEditorKit getStyledEditorKit(JEditorPane e) { EditorKit k = e.getEditorKit(); if (k instanceof StyledEditorKit) { return (StyledEditorKit) k; } throw new IllegalArgumentException("EditorKit must be StyledEditorKit"); }
Applies the given attributes to character content. If there is a selection, the attributes are applied to the selection range. If there is no selection, the attributes are applied to the input attribute set which defines the attributes for any new text that gets inserted.
Params:
  • editor – the editor
  • attr – the attributes
  • replace – if true, then replace the existing attributes first
/** * Applies the given attributes to character * content. If there is a selection, the attributes * are applied to the selection range. If there * is no selection, the attributes are applied to * the input attribute set which defines the attributes * for any new text that gets inserted. * * @param editor the editor * @param attr the attributes * @param replace if true, then replace the existing attributes first */
protected final void setCharacterAttributes(JEditorPane editor, AttributeSet attr, boolean replace) { int p0 = editor.getSelectionStart(); int p1 = editor.getSelectionEnd(); if (p0 != p1) { StyledDocument doc = getStyledDocument(editor); doc.setCharacterAttributes(p0, p1 - p0, attr, replace); } StyledEditorKit k = getStyledEditorKit(editor); MutableAttributeSet inputAttributes = k.getInputAttributes(); if (replace) { inputAttributes.removeAttributes(inputAttributes); } inputAttributes.addAttributes(attr); }
Applies the given attributes to paragraphs. If there is a selection, the attributes are applied to the paragraphs that intersect the selection. if there is no selection, the attributes are applied to the paragraph at the current caret position.
Params:
  • editor – the editor
  • attr – the attributes
  • replace – if true, replace the existing attributes first
/** * Applies the given attributes to paragraphs. If * there is a selection, the attributes are applied * to the paragraphs that intersect the selection. * if there is no selection, the attributes are applied * to the paragraph at the current caret position. * * @param editor the editor * @param attr the attributes * @param replace if true, replace the existing attributes first */
protected final void setParagraphAttributes(JEditorPane editor, AttributeSet attr, boolean replace) { int p0 = editor.getSelectionStart(); int p1 = editor.getSelectionEnd(); StyledDocument doc = getStyledDocument(editor); doc.setParagraphAttributes(p0, p1 - p0, attr, replace); } }
An action to set the font family in the associated JEditorPane. This will use the family specified as the command string on the ActionEvent if there is one, otherwise the family that was initialized with will be used.

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

/** * An action to set the font family in the associated * JEditorPane. This will use the family specified as * the command string on the ActionEvent if there is one, * otherwise the family that was initialized with will be used. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public static class FontFamilyAction extends StyledTextAction {
Creates a new FontFamilyAction.
Params:
  • nm – the action name
  • family – the font family
/** * Creates a new FontFamilyAction. * * @param nm the action name * @param family the font family */
public FontFamilyAction(String nm, String family) { super(nm); this.family = family; }
Sets the font family.
Params:
  • e – the event
/** * Sets the font family. * * @param e the event */
public void actionPerformed(ActionEvent e) { JEditorPane editor = getEditor(e); if (editor != null) { String family = this.family; if ((e != null) && (e.getSource() == editor)) { String s = e.getActionCommand(); if (s != null) { family = s; } } if (family != null) { MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setFontFamily(attr, family); setCharacterAttributes(editor, attr, false); } else { UIManager.getLookAndFeel().provideErrorFeedback(editor); } } } private String family; }
An action to set the font size in the associated JEditorPane. This will use the size specified as the command string on the ActionEvent if there is one, otherwise the size that was initialized with will be used.

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

/** * An action to set the font size in the associated * JEditorPane. This will use the size specified as * the command string on the ActionEvent if there is one, * otherwise the size that was initialized with will be used. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public static class FontSizeAction extends StyledTextAction {
Creates a new FontSizeAction.
Params:
  • nm – the action name
  • size – the font size
/** * Creates a new FontSizeAction. * * @param nm the action name * @param size the font size */
public FontSizeAction(String nm, int size) { super(nm); this.size = size; }
Sets the font size.
Params:
  • e – the action event
/** * Sets the font size. * * @param e the action event */
public void actionPerformed(ActionEvent e) { JEditorPane editor = getEditor(e); if (editor != null) { int size = this.size; if ((e != null) && (e.getSource() == editor)) { String s = e.getActionCommand(); try { size = Integer.parseInt(s, 10); } catch (NumberFormatException nfe) { } } if (size != 0) { MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setFontSize(attr, size); setCharacterAttributes(editor, attr, false); } else { UIManager.getLookAndFeel().provideErrorFeedback(editor); } } } private int size; }
An action to set foreground color. This sets the StyleConstants.Foreground attribute for the currently selected range of the target JEditorPane. This is done by calling StyledDocument.setCharacterAttributes on the styled document associated with the target JEditorPane.

If the target text component is specified as the source of the ActionEvent and there is a command string, the command string will be interpreted as the foreground color. It will be interpreted by called Color.decode, and should therefore be legal input for that method.

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

/** * An action to set foreground color. This sets the * <code>StyleConstants.Foreground</code> attribute for the * currently selected range of the target JEditorPane. * This is done by calling * <code>StyledDocument.setCharacterAttributes</code> * on the styled document associated with the target * JEditorPane. * <p> * If the target text component is specified as the * source of the ActionEvent and there is a command string, * the command string will be interpreted as the foreground * color. It will be interpreted by called * <code>Color.decode</code>, and should therefore be * legal input for that method. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public static class ForegroundAction extends StyledTextAction {
Creates a new ForegroundAction.
Params:
  • nm – the action name
  • fg – the foreground color
/** * Creates a new ForegroundAction. * * @param nm the action name * @param fg the foreground color */
public ForegroundAction(String nm, Color fg) { super(nm); this.fg = fg; }
Sets the foreground color.
Params:
  • e – the action event
/** * Sets the foreground color. * * @param e the action event */
public void actionPerformed(ActionEvent e) { JEditorPane editor = getEditor(e); if (editor != null) { Color fg = this.fg; if ((e != null) && (e.getSource() == editor)) { String s = e.getActionCommand(); try { fg = Color.decode(s); } catch (NumberFormatException nfe) { } } if (fg != null) { MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setForeground(attr, fg); setCharacterAttributes(editor, attr, false); } else { UIManager.getLookAndFeel().provideErrorFeedback(editor); } } } private Color fg; }
An action to set paragraph alignment. This sets the StyleConstants.Alignment attribute for the currently selected range of the target JEditorPane. This is done by calling StyledDocument.setParagraphAttributes on the styled document associated with the target JEditorPane.

If the target text component is specified as the source of the ActionEvent and there is a command string, the command string will be interpreted as an integer that should be one of the legal values for the StyleConstants.Alignment attribute.

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

/** * An action to set paragraph alignment. This sets the * <code>StyleConstants.Alignment</code> attribute for the * currently selected range of the target JEditorPane. * This is done by calling * <code>StyledDocument.setParagraphAttributes</code> * on the styled document associated with the target * JEditorPane. * <p> * If the target text component is specified as the * source of the ActionEvent and there is a command string, * the command string will be interpreted as an integer * that should be one of the legal values for the * <code>StyleConstants.Alignment</code> attribute. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public static class AlignmentAction extends StyledTextAction {
Creates a new AlignmentAction.
Params:
  • nm – the action name
  • a – the alignment >= 0
/** * Creates a new AlignmentAction. * * @param nm the action name * @param a the alignment >= 0 */
public AlignmentAction(String nm, int a) { super(nm); this.a = a; }
Sets the alignment.
Params:
  • e – the action event
/** * Sets the alignment. * * @param e the action event */
public void actionPerformed(ActionEvent e) { JEditorPane editor = getEditor(e); if (editor != null) { int a = this.a; if ((e != null) && (e.getSource() == editor)) { String s = e.getActionCommand(); try { a = Integer.parseInt(s, 10); } catch (NumberFormatException nfe) { } } MutableAttributeSet attr = new SimpleAttributeSet(); StyleConstants.setAlignment(attr, a); setParagraphAttributes(editor, attr, false); } } private int a; }
An action to toggle the bold attribute.

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

/** * An action to toggle the bold attribute. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public static class BoldAction extends StyledTextAction {
Constructs a new BoldAction.
/** * Constructs a new BoldAction. */
public BoldAction() { super("font-bold"); }
Toggles the bold attribute.
Params:
  • e – the action event
/** * Toggles the bold attribute. * * @param e the action event */
public void actionPerformed(ActionEvent e) { JEditorPane editor = getEditor(e); if (editor != null) { StyledEditorKit kit = getStyledEditorKit(editor); MutableAttributeSet attr = kit.getInputAttributes(); boolean bold = (StyleConstants.isBold(attr)) ? false : true; SimpleAttributeSet sas = new SimpleAttributeSet(); StyleConstants.setBold(sas, bold); setCharacterAttributes(editor, sas, false); } } }
An action to toggle the italic attribute.

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

/** * An action to toggle the italic attribute. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public static class ItalicAction extends StyledTextAction {
Constructs a new ItalicAction.
/** * Constructs a new ItalicAction. */
public ItalicAction() { super("font-italic"); }
Toggles the italic attribute.
Params:
  • e – the action event
/** * Toggles the italic attribute. * * @param e the action event */
public void actionPerformed(ActionEvent e) { JEditorPane editor = getEditor(e); if (editor != null) { StyledEditorKit kit = getStyledEditorKit(editor); MutableAttributeSet attr = kit.getInputAttributes(); boolean italic = (StyleConstants.isItalic(attr)) ? false : true; SimpleAttributeSet sas = new SimpleAttributeSet(); StyleConstants.setItalic(sas, italic); setCharacterAttributes(editor, sas, false); } } }
An action to toggle the underline attribute.

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

/** * An action to toggle the underline attribute. * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans<sup><font size="-2">TM</font></sup> * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. */
public static class UnderlineAction extends StyledTextAction {
Constructs a new UnderlineAction.
/** * Constructs a new UnderlineAction. */
public UnderlineAction() { super("font-underline"); }
Toggles the Underline attribute.
Params:
  • e – the action event
/** * Toggles the Underline attribute. * * @param e the action event */
public void actionPerformed(ActionEvent e) { JEditorPane editor = getEditor(e); if (editor != null) { StyledEditorKit kit = getStyledEditorKit(editor); MutableAttributeSet attr = kit.getInputAttributes(); boolean underline = (StyleConstants.isUnderline(attr)) ? false : true; SimpleAttributeSet sas = new SimpleAttributeSet(); StyleConstants.setUnderline(sas, underline); setCharacterAttributes(editor, sas, false); } } }
StyledInsertBreakAction has similar behavior to that of DefaultEditorKit.InsertBreakAction. That is when its actionPerformed method is invoked, a newline is inserted. Beyond that, this will reset the input attributes to what they were before the newline was inserted.
/** * StyledInsertBreakAction has similar behavior to that of * <code>DefaultEditorKit.InsertBreakAction</code>. That is when * its <code>actionPerformed</code> method is invoked, a newline * is inserted. Beyond that, this will reset the input attributes to * what they were before the newline was inserted. */
static class StyledInsertBreakAction extends StyledTextAction { private SimpleAttributeSet tempSet; StyledInsertBreakAction() { super(insertBreakAction); } public void actionPerformed(ActionEvent e) { JEditorPane target = getEditor(e); if (target != null) { if ((!target.isEditable()) || (!target.isEnabled())) { UIManager.getLookAndFeel().provideErrorFeedback(target); return; } StyledEditorKit sek = getStyledEditorKit(target); if (tempSet != null) { tempSet.removeAttributes(tempSet); } else { tempSet = new SimpleAttributeSet(); } tempSet.addAttributes(sek.getInputAttributes()); target.replaceSelection("\n"); MutableAttributeSet ia = sek.getInputAttributes(); ia.removeAttributes(ia); ia.addAttributes(tempSet); tempSet.removeAttributes(tempSet); } else { // See if we are in a JTextComponent. JTextComponent text = getTextComponent(e); if (text != null) { if ((!text.isEditable()) || (!text.isEnabled())) { UIManager.getLookAndFeel().provideErrorFeedback(target); return; } text.replaceSelection("\n"); } } } } }