| /* JEditorPane.java -- |
| Copyright (C) 2002, 2004, 2005, 2006, Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing; |
| |
| import java.awt.Container; |
| import java.awt.Dimension; |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.InputStreamReader; |
| import java.io.Reader; |
| import java.io.StringReader; |
| import java.net.MalformedURLException; |
| import java.net.URL; |
| import java.util.HashMap; |
| |
| import javax.accessibility.AccessibleContext; |
| import javax.accessibility.AccessibleHyperlink; |
| import javax.accessibility.AccessibleHypertext; |
| import javax.accessibility.AccessibleStateSet; |
| import javax.accessibility.AccessibleText; |
| import javax.swing.event.HyperlinkEvent; |
| import javax.swing.event.HyperlinkListener; |
| import javax.swing.text.BadLocationException; |
| import javax.swing.text.DefaultEditorKit; |
| import javax.swing.text.Document; |
| import javax.swing.text.EditorKit; |
| import javax.swing.text.Element; |
| import javax.swing.text.JTextComponent; |
| import javax.swing.text.View; |
| import javax.swing.text.ViewFactory; |
| import javax.swing.text.WrappedPlainView; |
| import javax.swing.text.html.HTML; |
| import javax.swing.text.html.HTMLDocument; |
| import javax.swing.text.html.HTMLEditorKit; |
| |
| /** |
| * A powerful text editor component that can handle different types of |
| * content. |
| * |
| * The JEditorPane text component is driven by an instance of |
| * {@link EditorKit}. The editor kit is responsible for providing |
| * a default {@link Document} implementation, a mechanism for loading |
| * and saving documents of its supported content type and providing |
| * a set of {@link Action}s for manipulating the content. |
| * |
| * By default the following content types are supported: |
| * <ul> |
| * <li><code>text/plain</code>: Plain text, handled by |
| * {@link javax.swing.text.DefaultEditorKit}.</li> |
| * <li><code>text/html</code>: HTML 4.0 styled text, handled by |
| * {@link javax.swing.text.html.HTMLEditorKit}.</li> |
| * <li><code>text/rtf</code>: RTF text, handled by |
| * {@link javax.swing.text.rtf.RTFEditorKit}.</li> |
| * </ul> |
| * |
| * @author original author unknown |
| * @author Roman Kennke (roman@kennke.org) |
| * @author Anthony Balkissoon abalkiss at redhat dot com |
| */ |
| public class JEditorPane extends JTextComponent |
| { |
| /** |
| * Provides accessibility support for <code>JEditorPane</code>. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| protected class AccessibleJEditorPane extends AccessibleJTextComponent |
| { |
| |
| /** |
| * Creates a new <code>AccessibleJEditorPane</code> object. |
| */ |
| protected AccessibleJEditorPane() |
| { |
| super(); |
| } |
| |
| /** |
| * Returns a description of this <code>AccessibleJEditorPane</code>. If |
| * this property is not set, then this returns the content-type of the |
| * editor pane. |
| * |
| * @return a description of this AccessibleJEditorPane |
| */ |
| public String getAccessibleDescription() |
| { |
| String descr = super.getAccessibleDescription(); |
| if (descr == null) |
| return getContentType(); |
| else |
| return descr; |
| } |
| |
| /** |
| * Returns the accessible state of this <code>AccessibleJEditorPane</code>. |
| * |
| * @return the accessible state of this <code>AccessibleJEditorPane</code> |
| */ |
| public AccessibleStateSet getAccessibleStateSet() |
| { |
| AccessibleStateSet state = super.getAccessibleStateSet(); |
| // TODO: Figure out what state must be added here to the super's state. |
| return state; |
| } |
| } |
| |
| /** |
| * Provides accessibility support for <code>JEditorPane</code>s, when the |
| * editor kit is an instance of {@link HTMLEditorKit}. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| protected class AccessibleJEditorPaneHTML extends AccessibleJEditorPane |
| { |
| /** |
| * Returns the accessible text of the <code>JEditorPane</code>. This will |
| * be an instance of |
| * {@link JEditorPaneAccessibleHypertextSupport}. |
| * |
| * @return the accessible text of the <code>JEditorPane</code> |
| */ |
| public AccessibleText getAccessibleText() |
| { |
| return new JEditorPaneAccessibleHypertextSupport(); |
| } |
| } |
| |
| /** |
| * This is the accessible text that is returned by |
| * {@link AccessibleJEditorPaneHTML#getAccessibleText()}. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| protected class JEditorPaneAccessibleHypertextSupport |
| extends AccessibleJEditorPane implements AccessibleHypertext |
| { |
| |
| /** |
| * Creates a new JEditorPaneAccessibleHypertextSupport object. |
| */ |
| public JEditorPaneAccessibleHypertextSupport() |
| { |
| super(); |
| } |
| |
| /** |
| * The accessible representation of a HTML link. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| public class HTMLLink extends AccessibleHyperlink |
| { |
| |
| /** |
| * The element in the document that represents the link. |
| */ |
| Element element; |
| |
| /** |
| * Creates a new <code>HTMLLink</code>. |
| * |
| * @param el the link element |
| */ |
| public HTMLLink(Element el) |
| { |
| this.element = el; |
| } |
| |
| /** |
| * Returns <code>true</code> if this <code>HTMLLink</code> is still |
| * valid. A <code>HTMLLink</code> can become invalid when the document |
| * changes. |
| * |
| * @return <code>true</code> if this <code>HTMLLink</code> is still |
| * valid |
| */ |
| public boolean isValid() |
| { |
| // I test here if the element at our element's start offset is the |
| // same as the element in the document at this offset. If this is true, |
| // I consider the link valid, if not, then this link no longer |
| // represented by this HTMLLink and therefor invalid. |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| return doc.getCharacterElement(element.getStartOffset()) == element; |
| } |
| |
| /** |
| * Returns the number of AccessibleActions in this link object. In |
| * general, link have 1 AccessibleAction associated with them. There are |
| * special cases where links can have multiple actions associated, like |
| * in image maps. |
| * |
| * @return the number of AccessibleActions in this link object |
| */ |
| public int getAccessibleActionCount() |
| { |
| // TODO: Implement the special cases. |
| return 1; |
| } |
| |
| /** |
| * Performs the specified action on the link object. This ususally means |
| * activating the link. |
| * |
| * @return <code>true</code> if the action has been performed |
| * successfully, <code>false</code> otherwise |
| */ |
| public boolean doAccessibleAction(int i) |
| { |
| String href = (String) element.getAttributes().getAttribute("href"); |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| try |
| { |
| URL url = new URL(doc.getBase(), href); |
| setPage(url); |
| String desc = doc.getText(element.getStartOffset(), |
| element.getEndOffset() - element.getStartOffset()); |
| HyperlinkEvent ev = |
| new HyperlinkEvent(JEditorPane.this, |
| HyperlinkEvent.EventType.ACTIVATED, url, desc, |
| element); |
| fireHyperlinkUpdate(ev); |
| return true; |
| } |
| catch (Exception ex) |
| { |
| return false; |
| } |
| } |
| |
| /** |
| * Returns the description of the action at action index <code>i</code>. |
| * This method returns the text within the element associated with this |
| * link. |
| * |
| * @param i the action index |
| * |
| * @return the description of the action at action index <code>i</code> |
| */ |
| public String getAccessibleActionDescription(int i) |
| { |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| try |
| { |
| return doc.getText(element.getStartOffset(), |
| element.getEndOffset() - element.getStartOffset()); |
| } |
| catch (BadLocationException ex) |
| { |
| throw (AssertionError) |
| new AssertionError("BadLocationException must not be thrown " |
| + "here.") |
| .initCause(ex); |
| } |
| } |
| |
| /** |
| * Returns an {@link URL} object, that represents the action at action |
| * index <code>i</code>. |
| * |
| * @param i the action index |
| * |
| * @return an {@link URL} object, that represents the action at action |
| * index <code>i</code> |
| */ |
| public Object getAccessibleActionObject(int i) |
| { |
| String href = (String) element.getAttributes().getAttribute("href"); |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| try |
| { |
| URL url = new URL(doc.getBase(), href); |
| return url; |
| } |
| catch (MalformedURLException ex) |
| { |
| return null; |
| } |
| } |
| |
| /** |
| * Returns an object that represents the link anchor. For examples, if |
| * the link encloses a string, then a <code>String</code> object is |
| * returned, if the link encloses an <img> tag, then an |
| * <code>ImageIcon</code> object is returned. |
| * |
| * @return an object that represents the link anchor |
| */ |
| public Object getAccessibleActionAnchor(int i) |
| { |
| // TODO: This is only the String case. Implement all cases. |
| return getAccessibleActionDescription(i); |
| } |
| |
| /** |
| * Returns the start index of the hyperlink element. |
| * |
| * @return the start index of the hyperlink element |
| */ |
| public int getStartIndex() |
| { |
| return element.getStartOffset(); |
| } |
| |
| /** |
| * Returns the end index of the hyperlink element. |
| * |
| * @return the end index of the hyperlink element |
| */ |
| public int getEndIndex() |
| { |
| return element.getEndOffset(); |
| } |
| |
| } |
| |
| /** |
| * Returns the number of hyperlinks in the document. |
| * |
| * @return the number of hyperlinks in the document |
| */ |
| public int getLinkCount() |
| { |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| HTMLDocument.Iterator linkIter = doc.getIterator(HTML.Tag.A); |
| int count = 0; |
| while (linkIter.isValid()) |
| { |
| count++; |
| linkIter.next(); |
| } |
| return count; |
| } |
| |
| /** |
| * Returns the <code>i</code>-th hyperlink in the document or |
| * <code>null</code> if there is no hyperlink with the specified index. |
| * |
| * @param i the index of the hyperlink to return |
| * |
| * @return the <code>i</code>-th hyperlink in the document or |
| * <code>null</code> if there is no hyperlink with the specified |
| * index |
| */ |
| public AccessibleHyperlink getLink(int i) |
| { |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| HTMLDocument.Iterator linkIter = doc.getIterator(HTML.Tag.A); |
| int count = 0; |
| while (linkIter.isValid()) |
| { |
| count++; |
| if (count == i) |
| break; |
| linkIter.next(); |
| } |
| if (linkIter.isValid()) |
| { |
| int offset = linkIter.getStartOffset(); |
| // TODO: I fetch the element for the link via getCharacterElement(). |
| // I am not sure that this is correct, maybe we must use |
| // getParagraphElement()? |
| Element el = doc.getCharacterElement(offset); |
| HTMLLink link = new HTMLLink(el); |
| return link; |
| } |
| else |
| return null; |
| } |
| |
| /** |
| * Returns the index of the link element at the character position |
| * <code>c</code> within the document, or <code>-1</code> if there is no |
| * link at the specified position. |
| * |
| * @param c the character index from which to fetch the link index |
| * |
| * @return the index of the link element at the character position |
| * <code>c</code> within the document, or <code>-1</code> if there |
| * is no link at the specified position |
| */ |
| public int getLinkIndex(int c) |
| { |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| HTMLDocument.Iterator linkIter = doc.getIterator(HTML.Tag.A); |
| int count = 0; |
| while (linkIter.isValid()) |
| { |
| if (linkIter.getStartOffset() <= c && linkIter.getEndOffset() > c) |
| break; |
| count++; |
| linkIter.next(); |
| } |
| if (linkIter.isValid()) |
| return count; |
| else |
| return -1; |
| } |
| |
| /** |
| * Returns the link text of the link at index <code>i</code>, or |
| * <code>null</code>, if there is no link at the specified position. |
| * |
| * @param i the index of the link |
| * |
| * @return the link text of the link at index <code>i</code>, or |
| * <code>null</code>, if there is no link at the specified |
| * position |
| */ |
| public String getLinkText(int i) |
| { |
| HTMLDocument doc = (HTMLDocument) getDocument(); |
| HTMLDocument.Iterator linkIter = doc.getIterator(HTML.Tag.A); |
| int count = 0; |
| while (linkIter.isValid()) |
| { |
| count++; |
| if (count == i) |
| break; |
| linkIter.next(); |
| } |
| if (linkIter.isValid()) |
| { |
| int offset = linkIter.getStartOffset(); |
| // TODO: I fetch the element for the link via getCharacterElement(). |
| // I am not sure that this is correct, maybe we must use |
| // getParagraphElement()? |
| Element el = doc.getCharacterElement(offset); |
| try |
| { |
| String text = doc.getText(el.getStartOffset(), |
| el.getEndOffset() - el.getStartOffset()); |
| return text; |
| } |
| catch (BadLocationException ex) |
| { |
| throw (AssertionError) |
| new AssertionError("BadLocationException must not be thrown " |
| + "here.") |
| .initCause(ex); |
| } |
| } |
| else |
| return null; |
| } |
| } |
| |
| /** |
| * An EditorKit used for plain text. This is the default editor kit for |
| * JEditorPanes. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| private static class PlainEditorKit extends DefaultEditorKit |
| { |
| |
| /** |
| * Returns a ViewFactory that supplies WrappedPlainViews. |
| */ |
| public ViewFactory getViewFactory() |
| { |
| return new ViewFactory() |
| { |
| public View create(Element el) |
| { |
| return new WrappedPlainView(el); |
| } |
| }; |
| } |
| } |
| |
| private static final long serialVersionUID = 3140472492599046285L; |
| |
| private URL page; |
| private EditorKit editorKit; |
| |
| boolean focus_root; |
| |
| // A mapping between content types and registered EditorKit types |
| static HashMap registerMap; |
| |
| // A mapping between content types and used EditorKits |
| HashMap editorMap; |
| |
| public JEditorPane() |
| { |
| init(); |
| setEditorKit(createDefaultEditorKit()); |
| } |
| |
| public JEditorPane(String url) throws IOException |
| { |
| this(new URL(url)); |
| } |
| |
| public JEditorPane(String type, String text) |
| { |
| init(); |
| setEditorKit(createEditorKitForContentType(type)); |
| setText(text); |
| } |
| |
| public JEditorPane(URL url) throws IOException |
| { |
| init(); |
| setEditorKit(createEditorKitForContentType("text/html"));; |
| setPage(url); |
| } |
| |
| /** |
| * Called by the constructors to set up the default bindings for content |
| * types and EditorKits. |
| */ |
| void init() |
| { |
| editorMap = new HashMap(); |
| registerMap = new HashMap(); |
| registerEditorKitForContentType("application/rtf", |
| "javax.swing.text.rtf.RTFEditorKit"); |
| registerEditorKitForContentType("text/plain", |
| "javax.swing.JEditorPane$PlainEditorKit"); |
| registerEditorKitForContentType("text/html", |
| "javax.swing.text.html.HTMLEditorKit"); |
| registerEditorKitForContentType("text/rtf", |
| "javax.swing.text.rtf.RTFEditorKit"); |
| } |
| |
| protected EditorKit createDefaultEditorKit() |
| { |
| return new PlainEditorKit(); |
| } |
| |
| /** |
| * Creates and returns an EditorKit that is appropriate for the given |
| * content type. This is created using the default recognized types |
| * plus any EditorKit types that have been registered. |
| * |
| * @see #registerEditorKitForContentType(String, String) |
| * @see #registerEditorKitForContentType(String, String, ClassLoader) |
| * @param type the content type |
| * @return an EditorKit for use with the given content type |
| */ |
| public static EditorKit createEditorKitForContentType(String type) |
| { |
| // TODO: Have to handle the case where a ClassLoader was specified |
| // when the EditorKit was registered |
| EditorKit e = null; |
| String className = (String) registerMap.get(type); |
| if (className != null) |
| { |
| try |
| { |
| e = (EditorKit) Class.forName(className).newInstance(); |
| } |
| catch (Exception e2) |
| { |
| // TODO: Not sure what to do here. |
| } |
| } |
| return e; |
| } |
| |
| /** |
| * Sends a given <code>HyperlinkEvent</code> to all registered listeners. |
| * |
| * @param event the event to send |
| */ |
| public void fireHyperlinkUpdate(HyperlinkEvent event) |
| { |
| HyperlinkListener[] listeners = getHyperlinkListeners(); |
| |
| for (int index = 0; index < listeners.length; ++index) |
| listeners[index].hyperlinkUpdate(event); |
| } |
| |
| /** |
| * Returns the accessible context associated with this editor pane. |
| * |
| * @return the accessible context associated with this editor pane |
| */ |
| public AccessibleContext getAccessibleContext() |
| { |
| if (accessibleContext == null) |
| { |
| if (getEditorKit() instanceof HTMLEditorKit) |
| accessibleContext = new AccessibleJEditorPaneHTML(); |
| else |
| accessibleContext = new AccessibleJEditorPane(); |
| } |
| return accessibleContext; |
| } |
| |
| public final String getContentType() |
| { |
| return getEditorKit().getContentType(); |
| } |
| |
| /** |
| * Returns the EditorKit. If there is no EditorKit set this method |
| * calls createDefaultEditorKit() and setEditorKit() first. |
| */ |
| public EditorKit getEditorKit() |
| { |
| if (editorKit == null) |
| setEditorKit(createDefaultEditorKit()); |
| return editorKit; |
| } |
| |
| /** |
| * Returns the class name of the EditorKit associated with the given |
| * content type. |
| * |
| * @since 1.3 |
| * @param type the content type |
| * @return the class name of the EditorKit associated with this content type |
| */ |
| public static String getEditorKitClassNameForContentType(String type) |
| { |
| return (String) registerMap.get(type); |
| } |
| |
| /** |
| * Returns the EditorKit to use for the given content type. If an |
| * EditorKit has been explicitly set via |
| * <code>setEditorKitForContentType</code> |
| * then it will be returned. Otherwise an attempt will be made to create |
| * an EditorKit from the default recognzied content types or any |
| * EditorKits that have been registered. If none can be created, a |
| * PlainEditorKit is created. |
| * |
| * @see #registerEditorKitForContentType(String, String) |
| * @see #registerEditorKitForContentType(String, String, ClassLoader) |
| * @param type the content type |
| * @return an appropriate EditorKit for the given content type |
| */ |
| public EditorKit getEditorKitForContentType(String type) |
| { |
| // First check if an EditorKit has been explicitly set. |
| EditorKit e = (EditorKit) editorMap.get(type); |
| // Then check to see if we can create one. |
| if (e == null) |
| e = createEditorKitForContentType(type); |
| // Otherwise default to PlainEditorKit. |
| if (e == null) |
| e = new PlainEditorKit(); |
| return e; |
| } |
| |
| /** |
| * Returns the preferred size for the JEditorPane. This is implemented to |
| * return the super's preferred size, unless one of |
| * {@link #getScrollableTracksViewportHeight()} or |
| * {@link #getScrollableTracksViewportWidth()} returns <code>true</code>, |
| * in which case the preferred width and/or height is replaced by the UI's |
| * minimum size. |
| * |
| * @return the preferred size for the JEditorPane |
| */ |
| public Dimension getPreferredSize() |
| { |
| Dimension pref = super.getPreferredSize(); |
| if (getScrollableTracksViewportWidth()) |
| pref.width = getUI().getMinimumSize(this).width; |
| if (getScrollableTracksViewportHeight()) |
| pref.height = getUI().getMinimumSize(this).height; |
| return pref; |
| } |
| |
| /** |
| * Returns <code>true</code> when a Viewport should force the height of |
| * this component to match the viewport height. This is implemented to return |
| * <code>true</code> when the parent is an instance of JViewport and |
| * the viewport height > the UI's minimum height. |
| * |
| * @return <code>true</code> when a Viewport should force the height of |
| * this component to match the viewport height |
| */ |
| public boolean getScrollableTracksViewportHeight() |
| { |
| // Tests show that this returns true when the parent is a JViewport |
| // and has a height > minimum UI height. |
| Container parent = getParent(); |
| return parent instanceof JViewport |
| && parent.getHeight() > getUI().getMinimumSize(this).height; |
| } |
| |
| /** |
| * Returns <code>true</code> when a Viewport should force the width of |
| * this component to match the viewport width. This is implemented to return |
| * <code>true</code> when the parent is an instance of JViewport and |
| * the viewport width > the UI's minimum width. |
| * |
| * @return <code>true</code> when a Viewport should force the width of |
| * this component to match the viewport width |
| */ |
| public boolean getScrollableTracksViewportWidth() |
| { |
| // Tests show that this returns true when the parent is a JViewport |
| // and has a width > minimum UI width. |
| Container parent = getParent(); |
| return parent != null && parent instanceof JViewport |
| && parent.getWidth() > getUI().getMinimumSize(this).width; |
| } |
| |
| public URL getPage() |
| { |
| return page; |
| } |
| |
| protected InputStream getStream(URL page) |
| throws IOException |
| { |
| return page.openStream(); |
| } |
| |
| public String getText() |
| { |
| return super.getText(); |
| } |
| |
| public String getUIClassID() |
| { |
| return "EditorPaneUI"; |
| } |
| |
| public boolean isFocusCycleRoot() |
| { |
| return focus_root; |
| } |
| |
| protected String paramString() |
| { |
| return "JEditorPane"; |
| } |
| |
| /** |
| * This method initializes from a stream. |
| */ |
| public void read(InputStream in, Object desc) throws IOException |
| { |
| EditorKit kit = getEditorKit(); |
| if (kit instanceof HTMLEditorKit && desc instanceof HTMLDocument) |
| { |
| Document doc = (Document) desc; |
| try |
| { |
| kit.read(in, doc, 0); |
| } |
| catch (BadLocationException ex) |
| { |
| assert false : "BadLocationException must not be thrown here."; |
| } |
| } |
| else |
| { |
| Reader inRead = new InputStreamReader(in); |
| super.read(inRead, desc); |
| } |
| } |
| |
| /** |
| * Establishes a binding between type and classname. This enables |
| * us to create an EditorKit later for the given content type. |
| * |
| * @param type the content type |
| * @param classname the name of the class that is associated with this |
| * content type |
| */ |
| public static void registerEditorKitForContentType(String type, |
| String classname) |
| { |
| registerMap.put(type, classname); |
| } |
| |
| /** |
| * Establishes the default bindings of type to classname. |
| */ |
| public static void registerEditorKitForContentType(String type, |
| String classname, |
| ClassLoader loader) |
| { |
| // TODO: Implement this properly. |
| } |
| |
| /** |
| * Replaces the currently selected content with new content represented |
| * by the given string. |
| */ |
| public void replaceSelection(String content) |
| { |
| // TODO: Implement this properly. |
| super.replaceSelection(content); |
| } |
| |
| /** |
| * Scrolls the view to the given reference location (that is, the value |
| * returned by the UL.getRef method for the URL being displayed). |
| */ |
| public void scrollToReference(String reference) |
| { |
| // TODO: Implement this properly. |
| } |
| |
| public final void setContentType(String type) |
| { |
| if (editorKit != null |
| && editorKit.getContentType().equals(type)) |
| return; |
| |
| EditorKit kit = getEditorKitForContentType(type); |
| |
| if (kit != null) |
| setEditorKit(kit); |
| } |
| |
| public void setEditorKit(EditorKit newValue) |
| { |
| if (editorKit == newValue) |
| return; |
| |
| if (editorKit != null) |
| editorKit.deinstall(this); |
| |
| EditorKit oldValue = editorKit; |
| editorKit = newValue; |
| |
| if (editorKit != null) |
| { |
| editorKit.install(this); |
| setDocument(editorKit.createDefaultDocument()); |
| } |
| |
| firePropertyChange("editorKit", oldValue, newValue); |
| invalidate(); |
| repaint(); |
| // Reset the accessibleContext since this depends on the editorKit. |
| accessibleContext = null; |
| } |
| |
| /** |
| * Explicitly sets an EditorKit to be used for the given content type. |
| * @param type the content type |
| * @param k the EditorKit to use for the given content type |
| */ |
| public void setEditorKitForContentType(String type, EditorKit k) |
| { |
| editorMap.put(type, k); |
| } |
| |
| /** |
| * Sets the current URL being displayed. |
| */ |
| public void setPage(String url) throws IOException |
| { |
| setPage(new URL(url)); |
| } |
| |
| /** |
| * Sets the current URL being displayed. |
| */ |
| public void setPage(URL page) throws IOException |
| { |
| if (page == null) |
| throw new IOException("invalid url"); |
| |
| try |
| { |
| this.page = page; |
| getEditorKit().read(page.openStream(), getDocument(), 0); |
| } |
| catch (BadLocationException e) |
| { |
| // Ignored. '0' is always a valid offset. |
| } |
| } |
| |
| /** |
| * Sets the text of the JEditorPane. The argument <code>t</code> |
| * is expected to be in the format of the current EditorKit. This removes |
| * the content of the current document and uses the EditorKit to read in the |
| * new text. This allows the EditorKit to handle the String rather than just |
| * inserting in plain text. |
| * |
| * @param t the text to display in this JEditorPane |
| */ |
| public void setText(String t) |
| { |
| try |
| { |
| // Remove the current content. |
| Document doc = getDocument(); |
| doc.remove(0, doc.getLength()); |
| if (t == null || t.equals("")) |
| return; |
| |
| // Let the EditorKit read the text into the Document. |
| getEditorKit().read(new StringReader(t), doc, 0); |
| } |
| catch (BadLocationException ble) |
| { |
| // TODO: Don't know what to do here. |
| } |
| catch (IOException ioe) |
| { |
| // TODO: Don't know what to do here. |
| } |
| } |
| |
| /** |
| * Add a <code>HyperlinkListener</code> object to this editor pane. |
| * |
| * @param listener the listener to add |
| */ |
| public void addHyperlinkListener(HyperlinkListener listener) |
| { |
| listenerList.add(HyperlinkListener.class, listener); |
| } |
| |
| /** |
| * Removes a <code>HyperlinkListener</code> object to this editor pane. |
| * |
| * @param listener the listener to remove |
| */ |
| public void removeHyperlinkListener(HyperlinkListener listener) |
| { |
| listenerList.remove(HyperlinkListener.class, listener); |
| } |
| |
| /** |
| * Returns all added <code>HyperlinkListener</code> objects. |
| * |
| * @return array of listeners |
| * |
| * @since 1.4 |
| */ |
| public HyperlinkListener[] getHyperlinkListeners() |
| { |
| return (HyperlinkListener[]) getListeners(HyperlinkListener.class); |
| } |
| } |
