Example usage for com.google.gwt.dom.client NodeList getLength

List of usage examples for com.google.gwt.dom.client NodeList getLength

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Introduction

In this page you can find the example usage for com.google.gwt.dom.client NodeList getLength.

Prototype

public int getLength()

Source Link

Usage

From source file:org.vaadin.gwtgraphics.client.impl.util.VMLUtil.java

License:Apache License

private static Element getChildElementWithTagName(Element element, String name) {
    NodeList<Node> nodes = element.getChildNodes();
    for (int i = 0; i < nodes.getLength(); i++) {
        Node node = nodes.getItem(i);
        if (node.getNodeName().equals(name)) {
            return Element.as(node);
        }/*  w w w. j ava 2s  .  c o  m*/
    }
    return null;
}

From source file:org.vectomatic.dom.svg.impl.SVGParserImplOpera.java

License:Open Source License

/**
 * Fix for opera./*from w ww .  jav  a2s  .  c om*/
 * SVG Objects created by the parser and imported do not seem to recognize their
 * CSS attributes. Reapplying them seems to solve the issue.
 * The CSS style attributes which contain hrefs to svg elements are corrupted an
 * need to be fixed as well.
 * @param root
 */
private static void operaFix(Element root) {
    Stack<Element> stack = new Stack<Element>();
    stack.push(root);
    while (!stack.empty()) {
        Element element = stack.pop();
        if (SVGConstants.SVG_NAMESPACE_URI.equals(DOMHelper.getNamespaceURI(element))) {
            OMSVGAnimatedString cn = element.<SVGElement>cast().getClassName_();
            if (cn != null) {
                String value = cn.getBaseVal();
                if (value != null && value.length() > 0) {
                    cn.setBaseVal(value);
                }
            }
            if (element.hasAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE)) {
                element.setAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE,
                        element.getAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE));
                OMSVGStyle style = element.getStyle().<OMSVGStyle>cast();
                fixProperty(style, SVGConstants.CSS_FILL_PROPERTY);
                fixProperty(style, SVGConstants.CSS_STROKE_PROPERTY);
            }
        }
        NodeList<Node> childNodes = element.getChildNodes();
        for (int i = 0, length = childNodes.getLength(); i < length; i++) {
            Node node = childNodes.getItem(i);
            if (node.getNodeType() == Node.ELEMENT_NODE) {
                stack.push(node.<Element>cast());
            }
        }
    }
}

From source file:org.vectomatic.dom.svg.utils.DOMHelper.java

License:Open Source License

/**
 * Returns an XPath expression which enables reaching the specified node
 * from the root node//from  ww w  . j a va2s .co m
 * @param node
 * The node to reach
 * @param root
 * The root node, or null to specify the document root
 * @return
 * An XPath expression which enables reaching the specified node
 * from the root node
 */
public static String getXPath(Node node, Node root) {
    StringBuilder builder = new StringBuilder();
    Node parentNode;
    while ((node != root) && (parentNode = node.getParentNode()) != null) {
        NodeList<Node> siblings = parentNode.getChildNodes();
        int index = 0;
        for (int i = 0, length = siblings.getLength(); i < length; i++) {
            Node sibling = siblings.getItem(i);
            if (sibling.getNodeType() == Node.ELEMENT_NODE) {
                index++;
                if (node == sibling) {
                    builder.insert(0, "/*[" + index + "]");
                    break;
                }
            }
        }
        node = parentNode;
    }
    return builder.toString();
}

From source file:org.vectomatic.svg.edit.client.engine.SVGModel.java

License:Open Source License

private SVGIconTreeNode buildTreeNode(SVGElement element, List<SVGTreeNode.IProperty> properties) {
    SVGIconTreeNode node = new SVGIconTreeNode(element, properties);
    NodeList<Node> childNodes = element.getChildNodes();
    for (int i = 0, length = childNodes.getLength(); i < length; i++) {
        Node child = childNodes.getItem(i);
        if (child.getNodeType() == Node.ELEMENT_NODE) {
            Element childElement = child.cast();
            if (SVGConstants.SVG_NAMESPACE_URI.equals(DOMHelper.getNamespaceURI(childElement))
                    && hasGraphicalElements((SVGElement) childElement.cast())) {
                node.add(buildTreeNode((SVGElement) childElement.cast(), properties));
            }/*from w  w w  .j a  v  a  2 s.  c  o m*/
        }
    }
    return node;
}

From source file:org.vectomatic.svg.edit.client.engine.SVGModel.java

License:Open Source License

/**
 * Returns true if the subtree rooted at the specified element
 * contains at least one graphical element which is not
 * part of a definition element//from  ww w.ja v  a 2  s  . com
 * @param element
 * @return
 */
public static boolean hasGraphicalElements(SVGElement element) {
    if (graphicalElementNames.contains(DOMHelper.getLocalName(element))) {
        return true;
    }
    NodeList<Node> childNodes = element.getChildNodes();
    for (int i = 0, length = childNodes.getLength(); i < length; i++) {
        Node child = childNodes.getItem(i);
        if (child.getNodeType() == Node.ELEMENT_NODE) {
            if (SVGConstants.SVG_NAMESPACE_URI.equals(DOMHelper.getNamespaceURI((Element) child.cast()))
                    && !definitionElementNames.contains(DOMHelper.getLocalName(child))
                    && hasGraphicalElements((SVGElement) child.cast())) {
                return true;
            }
        }
    }
    return false;
}

From source file:org.vectomatic.svg.edit.client.engine.SVGModel.java

License:Open Source License

/**
 * Completes the specified SVG subtree so that all the proper SVG elements have
 * an associated title and desc elements
 * @param root The SVG subtree to complete
 *//*from  w w  w. j av a2s  . com*/
public void createTitleDesc(SVGElement root) {
    // Perform a DFS of the tree to collect all the SVG elements
    // which can have a title and desc but do not yet have one
    List<SVGElement> incompleteElements = new ArrayList<SVGElement>();
    Stack<SVGElement> stack = new Stack<SVGElement>();
    stack.push(root);
    while (stack.size() > 0) {
        SVGElement element = stack.pop();
        if (hasTitleDesc(element) && (DOMHelper.evaluateNodeXPath(element, TITLE_PROPERTY.getXPath(),
                SVGPrefixResolver.INSTANCE) == null
                || DOMHelper.evaluateNodeXPath(element, DESC_PROPERTY.getXPath(),
                        SVGPrefixResolver.INSTANCE) == null)) {
            incompleteElements.add(element);
        }
        NodeList<Node> childNodes = element.getChildNodes();
        for (int i = 0, length = childNodes.getLength(); i < length; i++) {
            Node child = childNodes.getItem(i);
            if (child.getNodeType() == Node.ELEMENT_NODE) {
                Element childElement = child.cast();
                if (SVGConstants.SVG_NAMESPACE_URI.equals(DOMHelper.getNamespaceURI(childElement))) {
                    stack.push((SVGElement) childElement.cast());
                }
            }
        }
    }

    // Create the missing desc and titles
    SVGDocument document = root.getOwnerDocument().cast();
    for (SVGElement element : incompleteElements) {
        SVGTitleElement title = DOMHelper.evaluateNodeXPath(element, TITLE_PROPERTY.getXPath(),
                SVGPrefixResolver.INSTANCE);
        if (title == null) {
            title = DOMHelper
                    .createElementNS(document, SVGConstants.SVG_NAMESPACE_URI, SVGConstants.SVG_TITLE_TAG)
                    .cast();
            title.appendChild(document.createTextNode(generateName(element)));
            Node firstChild = element.getFirstChild();
            if (firstChild == null) {
                element.appendChild(title);
            } else {
                element.insertBefore(title, firstChild);
            }
        }
        SVGDescElement desc = DOMHelper.evaluateNodeXPath(element, DESC_PROPERTY.getXPath(),
                SVGPrefixResolver.INSTANCE);
        if (desc == null) {
            desc = DOMHelper
                    .createElementNS(document, SVGConstants.SVG_NAMESPACE_URI, SVGConstants.SVG_DESC_TAG)
                    .cast();
            desc.appendChild(document.createTextNode(""));
            element.insertAfter(desc, title);
        }
    }
}

From source file:org.vectomatic.svg.edit.client.engine.SVGProcessor.java

License:Open Source License

public static int normalizeIds(OMSVGElement srcSvg) {
    docId++;//w w  w.ja  v a2 s . com
    // Collect all the original element ids and replace them with a
    // normalized id
    int idIndex = 0;
    Map<String, Element> idToElement = new HashMap<String, Element>();
    Map<String, String> idToNormalizedId = new HashMap<String, String>();
    List<Element> queue = new ArrayList<Element>();
    queue.add(srcSvg.getElement());
    while (queue.size() > 0) {
        Element element = queue.remove(0);
        String id = element.getId();
        if (id != null) {
            idToElement.put(id, element);
            String normalizedId = "d" + docId + "_" + idIndex++;
            idToNormalizedId.put(id, normalizedId);
            element.setId(normalizedId);
        }
        NodeList<Node> childNodes = element.getChildNodes();
        for (int i = 0, length = childNodes.getLength(); i < length; i++) {
            Node childNode = childNodes.getItem(i);
            if (childNode.getNodeType() == Node.ELEMENT_NODE) {
                queue.add((Element) childNode.cast());
            }
        }
    }

    // Change all the attributes which are URI references
    Set<String> attNames = new HashSet<String>(Arrays.asList(new String[] { "clip-path", "mask", "marker-start",
            "marker-mid", "marker-end", "fill", "stroke", "filter", "cursor", "style" }));
    queue.add(srcSvg.getElement());
    IdRefTokenizer tokenizer = GWT.create(IdRefTokenizer.class);
    while (queue.size() > 0) {
        Element element = queue.remove(0);
        if (DOMHelper.hasAttributeNS(element, SVGConstants.XLINK_NAMESPACE_URI,
                SVGConstants.XLINK_HREF_ATTRIBUTE)) {
            String idRef = DOMHelper.getAttributeNS(element, SVGConstants.XLINK_NAMESPACE_URI,
                    SVGConstants.XLINK_HREF_ATTRIBUTE).substring(1);
            String normalizeIdRef = idToNormalizedId.get(idRef);
            DOMHelper.setAttributeNS(element, SVGConstants.XLINK_NAMESPACE_URI,
                    SVGConstants.XLINK_HREF_ATTRIBUTE, "#" + normalizeIdRef);
        }
        NamedNodeMap<Attr> attrs = DOMHelper.getAttributes(element);
        for (int i = 0, length = attrs.getLength(); i < length; i++) {
            Attr attr = attrs.item(i);
            if (attNames.contains(attr.getName())) {
                StringBuilder builder = new StringBuilder();
                tokenizer.tokenize(attr.getValue());
                IdRefTokenizer.IdRefToken token;
                while ((token = tokenizer.nextToken()) != null) {
                    String value = token.getValue();
                    if (token.getKind() == IdRefTokenizer.IdRefToken.DATA) {
                        builder.append(value);
                    } else {
                        value = idToNormalizedId.get(value);
                        builder.append(value == null ? token.getValue() : value);
                    }
                }
                attr.setValue(builder.toString());
            }
        }
        NodeList<Node> childNodes = element.getChildNodes();
        for (int i = 0, length = childNodes.getLength(); i < length; i++) {
            Node childNode = childNodes.getItem(i);
            if (childNode.getNodeType() == Node.ELEMENT_NODE) {
                queue.add((Element) childNode.cast());
            }
        }
    }
    return docId;
}

From source file:org.vectomatic.svg.samples.client.xpath.XPathSample.java

License:Open Source License

private void visit(Node node, Element parentSpan) {
    SpanElement span = doc.createSpanElement();
    nodeToSpan.put(node, span);/*from   w  ww .  j a va 2s  .  com*/

    parentSpan.appendChild(span);
    NodeList<Node> childNodes = node.getChildNodes();
    switch (node.getNodeType()) {
    case Node.ELEMENT_NODE: {
        Element element = node.<Element>cast();
        span.addClassName(css.element());

        // Populate the span with a start tag
        span.appendChild(createMarkup("<"));
        String tagName = element.getTagName();
        int index = tagName.indexOf(":");
        if (index != -1) {
            span.appendChild(doc.createTextNode(tagName.substring(0, index)));
            span.appendChild(createMarkup(":"));
            span.appendChild(doc.createTextNode(tagName.substring(index + 1)));
        } else {
            span.appendChild(doc.createTextNode(tagName));
        }

        // Create the attribute nodes spans
        NamedNodeMap<Attr> attributes = DOMHelper.getAttributes(element);
        for (int i = 0, length = attributes.getLength(); i < length; i++) {
            span.appendChild(doc.createTextNode(" "));

            SpanElement attrSpan = doc.createSpanElement();
            attrSpan.addClassName(css.attribute());
            span.appendChild(attrSpan);
            Attr attr = attributes.item(i);
            nodeToSpan.put(attr, attrSpan);

            String attrName = attr.getName();
            index = attrName.indexOf(":");
            if (index != -1) {
                attrSpan.appendChild(doc.createTextNode(attrName.substring(0, index)));
                attrSpan.appendChild(createMarkup(":"));
                attrSpan.appendChild(doc.createTextNode(attrName.substring(index + 1)));
            } else {
                attrSpan.appendChild(doc.createTextNode(attrName));
            }
            attrSpan.appendChild(createMarkup("=\""));
            attrSpan.appendChild(doc.createTextNode(attr.getValue()));
            attrSpan.appendChild(createMarkup("\""));
        }
        span.appendChild(createMarkup(childNodes.getLength() > 0 ? ">" : "/>"));
    }
        break;
    case Node.TEXT_NODE: {
        // Populate span with text
        Text text = node.<Text>cast();
        span.addClassName(css.text());
        span.appendChild(doc.createTextNode(text.getData()));
    }
        break;
    }

    for (int i = 0, count = node.getChildCount(); i < count; i++) {
        visit(childNodes.getItem(i), span);
    }

    if (childNodes.getLength() > 0 && node.getNodeType() == Node.ELEMENT_NODE) {
        Element element = node.<Element>cast();
        span.addClassName(css.element());

        // Populate the span with a close tag
        span.appendChild(createMarkup("</"));
        String tagName = element.getTagName();
        int index = tagName.indexOf(":");
        if (index != -1) {
            span.appendChild(doc.createTextNode(tagName.substring(0, index)));
            span.appendChild(createMarkup(":"));
            span.appendChild(doc.createTextNode(tagName.substring(index + 1)));
        } else {
            span.appendChild(doc.createTextNode(tagName));
        }
        span.appendChild(createMarkup(">"));
    }
}

From source file:org.waveprotocol.wave.client.clipboard.Clipboard.java

License:Apache License

private String maybeGetAttributeFromContainer(Element srcContainer, String attribName) {
    NodeList<Element> elementsByClassName = DomHelper.getElementsByClassName(srcContainer, MAGIC_CLASSNAME);
    if (elementsByClassName != null && elementsByClassName.getLength() > 0) {
        return elementsByClassName.getItem(0).getAttribute(attribName);
    }/*  w w  w.j a  v a2  s.co  m*/
    return null;
}

From source file:org.waveprotocol.wave.client.common.util.DomHelper.java

License:Apache License

/**
 * Gets a list of descendants of e that match the given class name.
 *
 * If the browser has the native method, that will be called. Otherwise, it
 * traverses descendents of the given element and returns the list of elements
 * with matching classname./* w w  w .  ja  va2s.  c o  m*/
 *
 * @param e
 * @param className
 */
public static NodeList<Element> getElementsByClassName(Element e, String className) {
    if (QuirksConstants.SUPPORTS_GET_ELEMENTS_BY_CLASSNAME) {
        return getElementsByClassNameNative(e, className);
    } else {
        NodeList<Element> all = e.getElementsByTagName("*");
        if (all == null) {
            return null;
        }
        JsArray<Element> ret = JavaScriptObject.createArray().cast();
        for (int i = 0; i < all.getLength(); ++i) {
            Element item = all.getItem(i);
            if (className.equals(item.getClassName())) {
                ret.push(item);
            }
        }
        return ret.cast();
    }
}