Java Range类代码示例

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
/**
 * @serialData Serialized fields. Convert Maps to Hashtables and Lists
 * to Vectors for backward compatibility.
 */
private void writeObject(ObjectOutputStream out) throws IOException {
    // Convert Maps to Hashtables, Lists to Vectors
    Vector<NodeIterator> it = (iterators == null)? null : new Vector<>(iterators);
    Vector<Range> r = (ranges == null)? null : new Vector<>(ranges);

    Hashtable<NodeImpl, Vector<LEntry>> el = null;
    if (eventListeners != null) {
        el = new Hashtable<>();
        for (Map.Entry<NodeImpl, List<LEntry>> e : eventListeners.entrySet()) {
             el.put(e.getKey(), new Vector<>(e.getValue()));
        }
    }

    // Write serialized fields
    ObjectOutputStream.PutField pf = out.putFields();
    pf.put("iterators", it);
    pf.put("ranges", r);
    pf.put("eventListeners", el);
    pf.put("mutationEvents", mutationEvents);
    out.writeFields();
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
@SuppressWarnings("unchecked")
private void readObject(ObjectInputStream in)
                    throws IOException, ClassNotFoundException {
    // We have to read serialized fields first.
    ObjectInputStream.GetField gf = in.readFields();
    Vector<NodeIterator> it = (Vector<NodeIterator>)gf.get("iterators", null);
    Vector<Range> r = (Vector<Range>)gf.get("ranges", null);
    Hashtable<NodeImpl, Vector<LEntry>> el =
            (Hashtable<NodeImpl, Vector<LEntry>>)gf.get("eventListeners", null);

    mutationEvents = gf.get("mutationEvents", false);

    //convert Hashtables back to HashMaps and Vectors to Lists
    if (it != null) iterators = new ArrayList<>(it);
    if (r != null) ranges = new ArrayList<>(r);
    if (el != null) {
        eventListeners = new HashMap<>();
        for (Map.Entry<NodeImpl, Vector<LEntry>> e : el.entrySet()) {
             eventListeners.put(e.getKey(), new ArrayList<>(e.getValue()));
        }
    }
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
public Range getSelectionRange() {
	if (this.dotInfo == null || this.dotInfo.range == null) {
		return null;
	}
	Range r = docRange.createRange();
	// some xml parsers don't allow end<start in the same text node. So,
	// handle dot<mark here

	if (this.markInfo.range.compareBoundaryPoints(Range.START_TO_START, this.dotInfo.range) <= 0) {
		r.setStart(this.markInfo.range.getStartContainer(), this.markInfo.range.getStartOffset());
		r.setEnd(this.dotInfo.range.getStartContainer(), this.dotInfo.range.getStartOffset());
	} else {
		r.setStart(this.dotInfo.range.getStartContainer(), this.dotInfo.range.getStartOffset());
		r.setEnd(this.markInfo.range.getStartContainer(), this.markInfo.range.getStartOffset());
	}
	return r;
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
protected Node getTarget(){
    Node target = null;
    Range range = getRange();

    if (range != null) {
        target = range.getEndContainer();
    }
    if (target == null) {
        target = getFocusedNode();
    }
    //if target is still null at this point, check to see if this is a drop to source action.
    if(target == null){
        //if it is, run the drop to source setup and get a valid drop target node back. 
        target = getSelectedNodeFromSource();
    }
    return target;
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
/** Not a client function. Called by Range.detach(),
 *  so a Range can remove itself from the list of
 *  Ranges.
 */
void removeRange(Range range) {

    if (range == null) return;
    if (ranges == null) return;

    removeStaleRangeReferences();
    Iterator i = ranges.iterator();
    while (i.hasNext()) {
        Object otherRange = ((Reference) i.next()).get();
        if (otherRange == range) {
            i.remove();
            return;
        }
        // Remove stale reference from the list.
        else if (otherRange == null) {
            i.remove();
        } 
    }
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
/** Not a client function. Called by Range.detach(),
 *  so a Range can remove itself from the list of
 *  Ranges.
 */
void removeRange(Range range) {

    if (range == null) return;
    if (ranges == null) return;

    ranges.removeElement(range);
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
public Range cloneRange(){
    if( fDetach) {
            throw new DOMException(
            DOMException.INVALID_STATE_ERR,
            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_STATE_ERR", null));
    }

    Range range = fDocument.createRange();
    range.setStart(fStartContainer, fStartOffset);
    range.setEnd(fEndContainer, fEndOffset);
    return range;
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
/** Not a client function. Called by Range.detach(),
 *  so a Range can remove itself from the list of
 *  Ranges.
 */
void removeRange(Range range) {

    if (range == null) return;
    if (ranges == null) return;

    ranges.remove(range);
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
public Range cloneRange(){
	if( fDetach) {
		throw new DOMException(
		DOMException.INVALID_STATE_ERR, 
            DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_STATE_ERR", null));
	}
    
    Range range = fDocument.createRange();
    range.setStart(fStartContainer, fStartOffset);
    range.setEnd(fEndContainer, fEndOffset);
    return range;
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
public void selectAll() {
	if (this.getComponent() == null || this.getComponent().getWidth() == 0
			|| this.getComponent().getHeight() == 0) {
		return;
	}
	checkDocument();
	NodeIterator nodeIterator = this.docTraversal.createNodeIterator(this.document.getDocumentElement(),
			NodeFilter.SHOW_TEXT, null, false);
	Text firstText = null;
	Text lastText = null;
	while (true) {
		Node n = nodeIterator.nextNode();
		if (n == null) {
			break;
		}
		if (!textInlineMap.containsKey(n)) {
			continue;
		}
		lastText = (Text) n;
		if (firstText == null) {
			firstText = lastText;
		}
	}
	if (firstText == null) {
		return;
	}
	Range r = docRange.createRange();
	r.setStart(firstText, 0);
	ViewModelInfo firstPoint = new ViewModelInfo(r, (InlineText) ((List) textInlineMap.get(firstText)).get(0));
	r = docRange.createRange();
	try {
		// possibly some dom impls don't handle this?
		r.setStart(lastText, lastText.getLength());
	} catch (Exception e) {
		r.setStart(lastText, Math.max(0, lastText.getLength() - 1));
	}
	List l = (List) textInlineMap.get(firstText);

	ViewModelInfo lastPoint = new ViewModelInfo(r, (InlineText) l.get(l.size() - 1));
	setDot(firstPoint);
	moveDot(lastPoint);

}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
ViewModelInfo(Range range, InlineText text) {
	this.range = range;
	this.text = text;

}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
public String resolve(String infileAddress, 
						String content, 
						String mimeType) throws AddressException{	
	try{						
		// get the start and end of the text to find
		String pieces[] = infileAddress.split("\\.\\.\\.");
		if(pieces == null || pieces.length != 2){
			throw new AddressException("Invalid quote address: " 
				+ infileAddress);
		}
		String start = pieces[0];
		String end = pieces[1];
	
		//System.out.println("start="+start);
		//System.out.println("end="+end);
	
		// parse content into a DOM
		Document document = parseDocument(content);
	
		// now find the beginning and end of the ranges that
		// match this text
		Node body = document.getElementsByTagName("body").item(0);
		Range range = ((DocumentRange)document).createRange();
		DocumentTraversal traverse = (DocumentTraversal)document;
		NodeFilter filter = null;
		NodeIterator nodes = 
			traverse.createNodeIterator(body, 
						NodeFilter.SHOW_CDATA_SECTION | NodeFilter.SHOW_TEXT, 
						filter, true);
		boolean results = findString(range, START, nodes, start);
		if(results == false){
			throw new AddressException("Unable to find start of quote range: " 
										+ start);
		}
	
		// jump the node iterator backwards one; this is for cases
		// where the start and end text are in the same node
		nodes.previousNode();
		//System.out.println("nodes="+nodes);
		results = findString(range, END, nodes, end);
		if(results == false){
			throw new AddressException("Unable to find end of quote range: " 
										+ end);
		}

		// get the fragment represented by this range
		DocumentFragment fragment = range.cloneContents();

		// serialize fragment into string
		//System.out.println("fragment="+fragment);
		return serialize((Node)fragment);
	}catch(Exception e){
		e.printStackTrace();
		throw new AddressException(e);
	}
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
protected boolean findString(Range range, int rangePos,
 							NodeIterator nodes, String fullString){
	return findString(range, rangePos, nodes, fullString,
						null, null, null);
}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
/**
 */
public Range createRange() {

    if (ranges == null) {
        ranges = new LinkedList();
        rangeReferenceQueue = new ReferenceQueue();
    }

    Range range = new RangeImpl(this);

    removeStaleRangeReferences();
    ranges.add(new WeakReference(range, rangeReferenceQueue));

    return range;

}
 

import org.w3c.dom.ranges.Range; //导入依赖的package包/类
/**
 */
public Range createRange() {

    if (ranges == null) {
        ranges = new ArrayList<>();
    }

    Range range = new RangeImpl(this);
    ranges.add(range);

    return range;

}