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

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:com.cgxlib.xq.client.impl.SelectorEngine.java

License:Apache License

public NodeList<Element> filter(NodeList<Element> nodes, String selector, boolean filterDetached) {
    JsNodeArray res = JsNodeArray.create();
    if (selector.isEmpty()) {
        return res;
    }/*from w w  w  .j  av  a 2  s  . c om*/
    Element ghostParent = null;
    HashSet<Node> parents = new HashSet<Node>();
    HashSet<Node> elmList = new HashSet<Node>();
    for (int i = 0, l = nodes.getLength(); i < l; i++) {
        Node e = nodes.getItem(i);
        if (e == window || e == document || e.getNodeName() == null
                || "html".equalsIgnoreCase(e.getNodeName())) {
            continue;
        }
        elmList.add(e);
        if (filterDetached) {
            Element p = e.getParentElement();
            if (p == null) {
                if (ghostParent == null) {
                    ghostParent = Document.get().createDivElement();
                    parents.add(ghostParent);
                }
                p = ghostParent;
                p.appendChild(e);
            } else if (!parents.contains(p)) {
                parents.add(p);
            }
        } else if (parents.isEmpty()) {
            parents.add(document);
        }
    }
    for (Node e : parents) {
        NodeList<Element> n = select(selector, e);
        for (int i = 0, l = n.getLength(); i < l; i++) {
            Element el = n.getItem(i);
            if (elmList.remove(el)) {
                res.addNode(el);
            }
        }
    }
    if (ghostParent != null) {
        ghostParent.setInnerHTML(null);
    }
    return res;
}

---

From source file:com.cgxlib.xq.client.js.JsUtils.java

License:Apache License

/**
 * Merge the oldNodes list into the newNodes one. If oldNodes is null, a new
 * list will be created and returned. If oldNodes is not null, a new list will
 * be created depending on the create flag.
 *///  ww w. j  a  v a2s .co  m
public static NodeList<Element> copyNodeList(NodeList<Element> oldNodes, NodeList<Element> newNodes,
        boolean create) {
    NodeList<Element> ret = oldNodes == null || create ? JsNodeArray.create() : oldNodes;
    JsCache idlist = JsCache.create();
    for (int i = 0; oldNodes != null && i < oldNodes.getLength(); i++) {
        Element e = oldNodes.getItem(i);
        idlist.put(e.hashCode(), 1);
        if (create) {
            ret.<JsNodeArray>cast().addNode(e, i);
        }
    }
    for (int i = 0, l = newNodes.getLength(), j = ret.getLength(); i < l; i++) {
        Element e = newNodes.getItem(i);
        if (!idlist.exists(e.hashCode())) {
            ret.<JsNodeArray>cast().addNode(newNodes.getItem(i), j++);
        }
    }
    return ret;
}

---

From source file:com.colinalworth.xmlview.client.ElementCell.java

License:Apache License

/**
 * @param parent/*from   w  w w .j a va  2  s  .c  o m*/
 * @return
 */
private com.google.gwt.dom.client.Element getActiveInput(com.google.gwt.dom.client.Element parent) {
    NodeList<com.google.gwt.dom.client.Element> elts = parent.getElementsByTagName("input");
    if (elts.getLength() == 1) {
        return elts.getItem(0);
    } else {
        assert elts.getLength() == 2;
        switch (getViewData(lastKey).section) {
        case AttributeName:
            return elts.getItem(0);
        case AttributeValue:
            return elts.getItem(1);
        default:
            throw new UnsupportedOperationException();
        }
    }
}

---

From source file:com.dgzt.html.ButtonFootballGameHtml.java

License:Open Source License

/**
 * Scale the canvas on the html page.// ww  w.j a  v  a2 s .  c o m
 */
private void scaleCanvas() {
    Element element = Document.get().getElementById("embed-html");
    int width = getWindowInnerWidth();
    int height = getWindowInnerHeight();
    consoleLog(String.valueOf(width) + " x " + String.valueOf(height));
    NodeList<Element> nl = element.getElementsByTagName("canvas");
    if (nl != null && nl.getLength() > 0) {
        Element canvas = nl.getItem(0);
        canvas.setAttribute("width", "" + width + "px");
        canvas.setAttribute("height", "" + height + "px");
        canvas.getStyle().setWidth(width, Style.Unit.PX);
        canvas.getStyle().setHeight(height, Style.Unit.PX);
        canvas.getStyle().setTop(0, Style.Unit.PX);
        canvas.getStyle().setLeft(0, Style.Unit.PX);
        canvas.getStyle().setPosition(Style.Position.ABSOLUTE);
    }
}

---

From source file:com.dom_distiller.client.ContentExtractor.java

License:Open Source License

/**
 * Creates a new minimal HTML document containing copies of the DOM nodes identified as the
 * core elements of the page. Some additional re-formatting hints may be included in the new
 * document.//from w w  w .j  a va  2s. co m
 *
 * @param textOnly indicates whether to simply return the aggregated text content instead of
 *        HTML
 * @param contentNodes the DOM nodes containing text to be included in the final docuemnt.
 * @return A HTML or text document which includes the aggregated content of the provided HTML
 *        nodes.
 */
private String formatExtractedNodes(boolean textOnly, List<Node> contentNodes) {
    NodeTree expandedList = NodeListExpander.expand(contentNodes);
    Node clonedSubtree = expandedList.cloneSubtreeRetainDirection();
    if (clonedSubtree.getNodeType() != Node.ELEMENT_NODE)
        return "";

    // determine text directionality
    textDirection = Element.as(clonedSubtree).getAttribute("dir");

    // The base URL in the distilled page viewer is different from that in
    // the live page.  This breaks all relative links (in anchors,
    // images, etc.), so make them absolute in the distilled content.
    makeAllLinksAbsolute(clonedSubtree);

    // Get URLs of the extracted images.
    if (clonedSubtree.getNodeType() == Node.ELEMENT_NODE) {
        NodeList<Element> allImages = Element.as(clonedSubtree).getElementsByTagName("IMG");
        for (int i = 0; i < allImages.getLength(); i++) {
            String imageUrl = allImages.getItem(i).getAttribute("src");
            if (!imageUrl.isEmpty()) {
                imageUrls.add(imageUrl);
            }
        }
    }

    if (textOnly) {
        return getTextFromTree(clonedSubtree);
    }

    // TODO(cjhopman): this discards the top element and just returns its children. This might
    // break in some cases.
    return Element.as(clonedSubtree).getInnerHTML();
}

---

From source file:com.dom_distiller.client.ContentExtractor.java

License:Open Source License

private static void makeAllLinksAbsolute(Node rootNode) {
    Element root = Element.as(rootNode);

    // AnchorElement.getHref() and ImageElement.getSrc() both return the
    // absolute URI, so simply set them as the respective attributes.

    NodeList<Element> allLinks = root.getElementsByTagName("A");
    for (int i = 0; i < allLinks.getLength(); i++) {
        AnchorElement link = AnchorElement.as(allLinks.getItem(i));
        if (!link.getHref().isEmpty()) {
            link.setHref(link.getHref());
        }/*from   w  w  w . j a  v a2s .c  o m*/
    }
    NodeList<Element> videoTags = root.getElementsByTagName("VIDEO");
    for (int i = 0; i < videoTags.getLength(); i++) {
        VideoElement video = (VideoElement) videoTags.getItem(i);
        if (!video.getPoster().isEmpty()) {
            video.setPoster(video.getPoster());
        }
    }
    makeAllSrcAttributesAbsolute(root);
}

---

From source file:com.dom_distiller.client.DocumentTitleGetter.java

License:Open Source License

/**
 * @return The title of the distilled document.
 *//*w  ww .  ja  va2 s  .  c o m*/
public static String getDocumentTitle(Object objTitle, Element root) {
    String currTitle = "", origTitle = "";

    if (objTitle.getClass() == currTitle.getClass()) { // If objTitle is of String type.
        currTitle = origTitle = objTitle.toString();
    } else if (root != null) { // Otherwise, use text of first TITLE element.
        NodeList<Element> titles = root.getElementsByTagName("TITLE");
        if (titles.getLength() > 0) {
            // Use javacript textContent instead of javascript innerText; the latter only returns
            // visible text, but <title> tags are invisible.
            currTitle = origTitle = DomUtil.javascriptTextContent(titles.getItem(0));
        }
    }
    if (currTitle == "")
        return "";

    if (StringUtil.match(currTitle, " [\\|\\-] ")) { // Title has '|' and/or '-'.
        // Get part before last '|' or '-'.
        currTitle = StringUtil.findAndReplace(origTitle, "(.*)[\\|\\-] .*", "$1");
        if (StringUtil.splitLength(currTitle, "\\s+") < 3) { // Part has < 3 words.
            // Get part after first '|' or '-'.
            currTitle = StringUtil.findAndReplace(origTitle, "[^\\|\\-]*[\\|\\-](.*)", "$1");
        }
    } else if (currTitle.indexOf(": ") != -1) { // Title has ':'.
        // Get part after last ':'.
        currTitle = StringUtil.findAndReplace(origTitle, ".*:(.*)", "$1");
        if (StringUtil.splitLength(currTitle, "\\s+") < 3) { // Part has < 3 words.
            // Get part after first ':'.
            currTitle = StringUtil.findAndReplace(origTitle, "[^:]*[:](.*)", "$1");
        }
    } else if (root != null && (currTitle.length() > 150 || currTitle.length() < 15)) {
        // Get plain text from the only H1 element.
        // TODO(kuan): this is what readability does, but this block may make more sense as an
        // if rather than else-if, e.g. currently this else-if block is used when original title
        // is "foo" but not when it is "foo |" or "foo:".
        currTitle = findFirstH1(root);
        if (currTitle.isEmpty())
            currTitle = origTitle;
    }

    currTitle = StringUtil.jsTrim(currTitle);

    if (StringUtil.splitLength(currTitle, "\\s+") <= 4)
        currTitle = origTitle;

    return currTitle;
}

---

From source file:com.dom_distiller.client.DocumentTitleGetter.java

License:Open Source License

private static String findFirstH1(Element root) {
    NodeList<Element> hOnes = root.getElementsByTagName("H1");
    // Use javacript innerText instead of javascript textContent; the former only returns
    // visible text, and we assume visible H1's are more inclined to being potential titles.
    String h1 = "";
    for (int i = 0; i < hOnes.getLength() && h1.isEmpty(); i++) {
        h1 = DomUtil.getInnerText(hOnes.getItem(i));
    }//from  w  w w.j  a va  2  s . c o m
    return h1;
}

---

From source file:com.dom_distiller.client.DomUtil.java

License:Open Source License

public static Element javaGetFirstElementWithClassName(Element root, String className) {
    NodeList<Element> allElems = root.getElementsByTagName("*");
    for (int i = 0; i < allElems.getLength(); i++) {
        Element elem = allElems.getItem(i);
        if (hasClassName(elem, className))
            return elem;
    }/*from   w  w  w .j  a  v a 2  s  . c om*/
    return null;
}

---

From source file:com.dom_distiller.client.IEReadingViewParser.java

License:Open Source License

private void findTitle() {
    mTitle = "";// w  ww  .  j a  v a 2s  . co m

    if (mAllMeta.getLength() == 0)
        return;

    // Make sure there's a <title> element.
    NodeList<Element> titles = mRoot.getElementsByTagName("TITLE");
    if (titles.getLength() == 0)
        return;

    // Extract title text from meta tag with "title" as name.
    for (int i = 0; i < mAllMeta.getLength(); i++) {
        MetaElement meta = MetaElement.as(mAllMeta.getItem(i));
        if (meta.getName().equalsIgnoreCase("title")) {
            mTitle = meta.getContent();
            break;
        }
    }
}

---

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