javax.swing.text.html.HTML.Attribute Java Examples

/**
 * Inform view creation.
 * @param view the newly created view.
 */
protected void viewCreated(ViewFactory factory, View view)
{
    if(view instanceof ImageView)
    {
        Element e = findFirstElement(view.getElement(), "img");

        if(e == null)
            return;

        Object src = e.getAttributes().getAttribute(Attribute.SRC);
        if(src != null && src instanceof String
            && ((String)src).endsWith("gif"))
        {
            imageViews.add((ImageView)view);
        }
    }
}
 

/**
 *
 * @param element
 * @param attrName
 * @param matchStrings
 * @return
 */
private Element findFirstElement(   Element element,
                                    HTML.Attribute attrName,
                                    String[] matchStrings)
{
    String attr = (String) element.getAttributes().getAttribute(attrName);

    if(attr != null)
        for (String matchString : matchStrings)
            if (attr.startsWith(matchString))
                return element;

    Element resultElement = null;

    // Count how many messages we have in the document.
    for (int i = 0; i < element.getElementCount(); i++)
    {
        resultElement = findFirstElement(element.getElement(i),
                                    attrName,
                                    matchStrings);
        if (resultElement != null)
            return resultElement;
    }

    return null;
}
 

@Override
public String getAttribute(final String name) {
    if ("text".equals(name)) {
        return getText();
    }
    if ("hRefIndex".equals(name)) {
        return getHRefIndex() + "";
    }
    if ("textIndex".equals(name)) {
        return getTextIndex() + "";
    }
    return EventQueueWait.exec(new Callable<String>() {
        @Override
        public String call() throws Exception {
            Iterator iterator = findTag((HTMLDocument) ((JEditorPane) parent.getComponent()).getDocument());
            AttributeSet attributes = iterator.getAttributes();
            Attribute attr = findAttribute(name);
            if (attr != null && attributes.isDefined(attr)) {
                return attributes.getAttribute(attr).toString();
            }
            return null;
        }
    });
}
 

public static VectorX<Element> matchChild(Element e
			, Attribute ab, String regex){
    VectorX<Element> vE= new VectorX<Element>(Element.class);
    
    int count = e.getElementCount();
    for (int i = 0; i < count; i++) {
      Element c = e.getElement(i);
      AttributeSet mAb = c.getAttributes();
      String s = (String) mAb.getAttribute(ab);	      
      if (s==null)continue;
//    System.out.println(name+" "+ab+"="+s);
      if (s.matches(regex))
        	vE.add(c);

    }
		return vE;
	}
 

public static Element findElement(HTMLDocument doc
		, Attribute ab, String value){
	
	return doc.getElement(doc.getDefaultRootElement(), ab, value);
	
   /*ElementIterator it = new ElementIterator(doc);
   Element e;
   while ((e = it.next()) != null) 
     if (hasAttribute(e,ab,value))return e;
	return null;*/	
}
 

/**
 *
 * @param attribute
 * @param matchStrings
 * @return
 */
private Element findElement(HTML.Attribute attribute,
                            String[] matchStrings)
{
    return findFirstElement(document.getDefaultRootElement(),
                            attribute,
                            matchStrings);
}
 

/**
 * Ensures that the document won't become too big. When the document reaches
 * a certain size the first message in the page is removed.
 */
private void ensureDocumentSize()
{
    if (document.getLength() > Chat.CHAT_BUFFER_SIZE)
    {
        String[] ids = new String[]
                                  {ChatHtmlUtils.MESSAGE_TEXT_ID,
                                   "statusMessage",
                                   "systemMessage",
                                   "actionMessage"};

        Element firstMsgElement = findElement(Attribute.ID, ids);

        int startIndex = firstMsgElement.getStartOffset();
        int endIndex = firstMsgElement.getEndOffset();

        try
        {
            // Remove the message.
            this.document.remove(startIndex, endIndex - startIndex);
        }
        catch (BadLocationException e)
        {
            logger.error("Error removing messages from chat: ", e);
        }

        if(firstMsgElement.getName().equals("table"))
        {
            // as we have removed a header for maybe several messages,
            // delete all messages without header
            deleteAllMessagesWithoutHeader();
        }
    }
}
 

/**
 * Retrieves the contents of the sent message with the given ID.
 *
 * @param messageUID The ID of the message to retrieve.
 * @return The contents of the message, or null if the message is not found.
 */
public String getMessageContents(String messageUID)
{
    Element root = document.getDefaultRootElement();
    Element e = document.getElement(
        root,
        Attribute.ID,
        ChatHtmlUtils.MESSAGE_TEXT_ID + messageUID);
    if (e == null)
    {
        logger.warn("Could not find message with ID " + messageUID);
        return null;
    }

    Object original_message = e.getAttributes().getAttribute(
            ChatHtmlUtils.ORIGINAL_MESSAGE_ATTRIBUTE);
    if (original_message == null)
    {
        logger.warn("Message with ID " + messageUID +
                " does not have original_message attribute");
        return null;
    }

    String res = StringEscapeUtils.unescapeXml(original_message.toString());
    // Remove all newline characters that were inserted to make copying
    // newlines from the conversation panel work.
    // They shouldn't be in the write panel, because otherwise a newline
    // would consist of two chars, one of them invisible (the 
), but
    // both of them have to be deleted in order to remove it.
    // On the other hand this means that copying newlines from the write
    // area produces only spaces, but this seems like the better option.
    res = res.replace("
", "");
    return res;
}
 

public static VectorX<Element> findDecendent(Element e
		, Attribute ab){
	VectorX<Element> vE= new VectorX<Element>(Element.class);
   ElementIterator it = new ElementIterator(e);
   Element c;
   while ((c = it.next()) != null){
   	//System.out.println(ab+"="+FHtml.getAttribute(c, ab));
     if (hasAttribute(c,ab))  	vE.add(c);
   }
	return vE;	
}
 

public static VectorX<Element> findDecendent(Element e
		, Attribute ab, String value){
	VectorX<Element> vE= new VectorX<Element>(Element.class);
   ElementIterator it = new ElementIterator(e);
   Element c;
   while ((c = it.next()) != null){
   	System.out.println(ab+"="+FSwingHtml.getAttribute(c, ab));
     if (hasAttribute(c,ab,value))
     	vE.add(c);
   }
	return vE;	
}
 

public static void extractAll(Element e
		, Attribute ab,  Attribute abExtract,VectorS vs){
	//VectorS vs=new VectorS();
	for (Element c: findDecendent(e,ab))
		vs.add(FSwingHtml.getAttribute(c, abExtract));
	//return vs;
}
 

public static VectorX<Element> findChild(Element e
		, Attribute ab, String value){
   VectorX<Element> vE= new VectorX<Element>(Element.class);
   
   int count = e.getElementCount();
   for (int i = 0; i < count; i++) {
     Element c = e.getElement(i);
     AttributeSet mAb = c.getAttributes();
     if (mAb.containsAttribute(HTML.Attribute.ID, value))
     	vE.add(c);
   }
	return vE;
}
 

private Attribute findAttribute(String attrName) {
    for (Attribute attr : allAttributes) {
        if (attrName.toUpperCase().equals(attr.toString().toUpperCase())) {
            return attr;
        }
    }
    return null;
}
 

public int getHRefIndex() {
    return EventQueueWait.exec(new Callable<Integer>() {
        @Override
        public Integer call() throws Exception {
            String href = getAttribute("href");
            int hRefIndex = 0;
            int current = 0;
            JEditorPane editor = (JEditorPane) parent.getComponent();
            HTMLDocument document = (HTMLDocument) editor.getDocument();
            Iterator iterator = document.getIterator(Tag.A);
            while (iterator.isValid()) {
                if (current++ >= index) {
                    return hRefIndex;
                }
                AttributeSet attributes = iterator.getAttributes();
                if (attributes != null) {
                    Object attributeObject = attributes.getAttribute(HTML.Attribute.HREF);
                    if (attributeObject != null) {
                        String attribute = attributeObject.toString();
                        if (attribute.equals(href)) {
                            hRefIndex++;
                        }
                    }
                }
                iterator.next();
            }
            return -1;
        }
    });
}
 

public static boolean hasAttribute(Element e, Attribute ab){
	AttributeSet mAb=e.getAttributes();
   for (Enumeration it = mAb.getAttributeNames() ; it.hasMoreElements() ;) {
   	Object s= it.nextElement();
     if (s.equals(ab))
     	return true;
   }
	return false;		
}
 

public static String getAttribute(Element e, Attribute ab){
	AttributeSet mAb=e.getAttributes();
   for (Enumeration it = mAb.getAttributeNames() ; it.hasMoreElements() ;) {
   	Object s= it.nextElement();
     if (s.equals(ab))
     	return (String) mAb.getAttribute(ab);
   }
	return null;
}
 

public Node newID( String value, CallBack f){
	return newChild(HTML.Attribute.ID,value,f);
}
 

public static void extractAll(Element e	, Attribute ab, String value
		, Attribute abExtract,VectorS vs){
	for (Element c: findDecendent(e,ab, value))
		vs.add(FSwingHtml.getAttribute(c, abExtract));
	return;
}
 

public static void extractAll(Element e	, Attribute ab,  VectorS vs){
	extractAll(e,ab,ab,vs);
}
 

public static boolean withID(Element e, String value){
	return e.getAttributes().containsAttribute(
			HTML.Attribute.ID, value);
}
 

/**
 * Indicates if this is a consecutive message.
 *
 * @param chatMessage the message to verify
 * @return <tt>true</tt> if the given message is a consecutive message,
 * <tt>false</tt> - otherwise
 */
private boolean isConsecutiveMessage(ChatMessage chatMessage)
{
    if (lastMessageUID == null)
        return false;

    Element lastMsgElement = document.getElement(
        ChatHtmlUtils.MESSAGE_TEXT_ID + lastMessageUID);

    if (lastMsgElement == null)
    {
        // This will happen if the last message is a non-user message, such
        // as a system message. For these messages we *do* update the
        // lastMessageUID, however we do *not* include the new UID in the
        // newly appended message.
        logger.info("Could not find message with ID " + lastMessageUID);
        return false;
    }

    String contactAddress
        = (String) lastMsgElement.getAttributes()
            .getAttribute(Attribute.NAME);

    if (contactAddress != null
            && (chatMessage.getMessageType()
                    .equals(Chat.INCOMING_MESSAGE)
                || chatMessage.getMessageType()
                    .equals(Chat.OUTGOING_MESSAGE)
                || chatMessage.getMessageType()
                    .equals(Chat.HISTORY_INCOMING_MESSAGE)
                || chatMessage.getMessageType()
                    .equals(Chat.HISTORY_OUTGOING_MESSAGE))
            && contactAddress.equals(chatMessage.getContactName())
            // And if the new message is within a minute from the last one.
            && ((chatMessage.getDate().getTime()
                - lastMessageTimestamp.getTime())
                    < 60000))
    {
        lastMessageTimestamp = chatMessage.getDate();

        return true;
    }

    return false;
}
 

/**
 * Adds a custom component at the end of the conversation.
 *
 * @param component the component to add at the end of the conversation.
 */
public void addComponent(ChatConversationComponent component)
{
    synchronized (scrollToBottomRunnable)
    {
        StyleSheet styleSheet = document.getStyleSheet();
        Style style
            = styleSheet
                .addStyle(
                    StyleConstants.ComponentElementName,
                    styleSheet.getStyle("body"));

        // The image must first be wrapped in a style
        style
            .addAttribute(
                AbstractDocument.ElementNameAttribute,
                StyleConstants.ComponentElementName);

        TransparentPanel wrapPanel
            = new TransparentPanel(new BorderLayout());

        wrapPanel.add(component, BorderLayout.NORTH);

        style.addAttribute(StyleConstants.ComponentAttribute, wrapPanel);
        style.addAttribute(Attribute.ID, ChatHtmlUtils.MESSAGE_TEXT_ID);
        SimpleDateFormat sdf
            = new SimpleDateFormat(HistoryService.DATE_FORMAT);
        style.addAttribute(ChatHtmlUtils.DATE_ATTRIBUTE,
                            sdf.format(component.getDate()));

        scrollToBottomIsPending = true;

        // We need to reinitialize the last message ID, because we don't
        // want components to be taken into account.
        lastMessageUID = null;

        // Insert the component style at the end of the text
        try
        {
            document
                .insertString(document.getLength(), "ignored text", style);
        }
        catch (BadLocationException e)
        {
            logger.error("Insert in the HTMLDocument failed.", e);
        }
    }
}
 

/**
 * Deletes all messages "div"s that are missing their header the table tag.
 * The method calls itself recursively.
 */
private void deleteAllMessagesWithoutHeader()
{
    String[] ids = new String[]
        {ChatHtmlUtils.MESSAGE_TEXT_ID,
            "statusMessage",
            "systemMessage",
            "actionMessage"};

    Element firstMsgElement = findElement(Attribute.ID, ids);

    if(firstMsgElement == null
        || !firstMsgElement.getName().equals("div"))
    {
        return;
    }

    int startIndex = firstMsgElement.getStartOffset();
    int endIndex = firstMsgElement.getEndOffset();

    try
    {
        // Remove the message.
        if(endIndex - startIndex < document.getLength())
            this.document.remove(startIndex, endIndex - startIndex);
        else
        {
            // currently there is a problem of deleting the last message
            // if it is the last message on the view
            return;
        }
    }
    catch (BadLocationException e)
    {
        logger.error("Error removing messages from chat: ", e);

        return;
    }

    deleteAllMessagesWithoutHeader();
}
 

public static boolean hasAttribute(Element e, Attribute ab, String value){
	return e.getAttributes().containsAttribute(	ab,value);
}
 

public static String getID(Element e){
	return getAttribute(e,HTML.Attribute.ID);
}
 

public Node newName( String value, CallBack f){
	return newChild(HTML.Attribute.NAME,value,f);
}
 

public static boolean hasName(Element e, String name){
	return e.getAttributes().containsAttribute(Attribute.NAME,name);
}
 

public Node newClass( String value, CallBack f){
	return newChild(HTML.Attribute.CLASS,value,f);
}
 

public Node newChild(Attribute ab, String value){
	return newChild(ab,value,null);
}
 

public Node newChild(Attribute ab, String value, CallBack f){
	Node n= new Node(ab,value,f);
	vnC.add(n);
	return n;
}