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:org.waveprotocol.wave.client.wavepanel.view.dom.DomUtil.java

License:Apache License

/**
 * Returns the specified child element of the given element.
 * //from w  ww. j a  v  a  2 s .  c o  m
 * @param parent parent element
 * @param childTypeString string representaton of the child element
 * @param toExclude element to be excluded from the search
 * @param startFrom element to start search with
 * @param step step to change the child index
 */
private static Element findChildElementExclusive(Element parent, String childTypeString, Element toExclude,
        Element startFrom, int step) {
    if (parent != null) {
        NodeList<Node> children = parent.getChildNodes();
        int begin;
        int end;
        if (step == +1) {
            begin = 0;
            end = children.getLength();
        } else {
            begin = children.getLength() - 1;
            end = -1;
        }
        boolean startFound = false;
        for (int i = begin; i != end; i += step) {
            Node child = children.getItem(i);
            if (child instanceof Element) {
                Element e = (Element) child;
                if (doesElementHaveTypeString(e, childTypeString)) {
                    if (e != toExclude) {
                        if (startFrom != null && !startFound) {
                            startFound = true;
                        } else {
                            return e;
                        }
                    }
                }
            }
        }
    }
    return null;
}

From source file:org.xwiki.gwt.dom.client.Element.java

License:Open Source License

/**
 * Expands inner elements with meta data.
 * /*from ww  w  .  jav  a  2 s .c om*/
 * @return this element
 */
public final Element expandInnerMetaData() {
    // Get all the inner elements with meta data.
    NodeList<com.google.gwt.dom.client.Element> elements = getElementsByTagName("*");
    List<Element> elementsWithMetaData = new ArrayList<Element>();
    for (int i = 0; i < elements.getLength(); i++) {
        Element element = (Element) elements.getItem(i);
        if (element.xHasAttribute(META_DATA_ATTR)) {
            elementsWithMetaData.add(element);
        }
    }
    // Expand meta data. Don't iterate the node list directly because it is live and meta data can contain elements.
    for (Element element : elementsWithMetaData) {
        // Remove the cached reference to the meta data document fragment because it might be shared by clone nodes.
        // We could have cloned the meta data document fragment but this is not reliable with some DOM nodes like
        // embedded objects.
        element.removeProperty(META_DATA_REF);
        element.expandMetaData(false);
    }
    return this;
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.font.DynamicListBoxPicker.java

License:Open Source License

/**
 * @return the additional option group, which contains all the options that were added dynamically
 *///from ww  w  .  j  a  v a2s.  c  o m
private Element getAdditionalOptionGroup() {
    NodeList<Element> groups = getElement().getElementsByTagName("optgroup");
    if (groups.getLength() > 0) {
        // The last group should be the additional group.
        return groups.getItem(groups.getLength() - 1);
    } else {
        Element additionalGroup = getElement().getOwnerDocument().createOptGroupElement();
        additionalGroup.setAttribute("label", getAdditionalOptionGroupLabel());
        getElement().appendChild(additionalGroup);
        return additionalGroup;
    }
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.image.ImageMetaDataExtractor.java

License:Open Source License

/**
 * {@inheritDoc}/*from w ww.  ja  v a  2  s.  c o  m*/
 * 
 * @see InnerHTMLListener#onInnerHTMLChange(Element)
 */
public void onInnerHTMLChange(Element parent) {
    // look up all images in this subtree
    NodeList<com.google.gwt.dom.client.Element> imgs = parent.getElementsByTagName("img");
    for (int i = 0; i < imgs.getLength(); i++) {
        Element img = (Element) imgs.getItem(i);
        processElement(img);
    }
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.importer.IEPasteFilter.java

License:Open Source License

/**
 * {@inheritDoc}//from   w  w  w . j  av a  2s  . c o m
 * 
 * @see PasteFilter#filter(Document)
 */
@Override
public void filter(Document document) {
    // We get the list of elements using a native DOM API instead of traversing the document because the DOM
    // document can be in an invalid state.
    NodeList<Element> descendants = document.getElementsByTagName("*");
    List<Element> nonHTMLElements = new ArrayList<Element>();
    for (int i = 0; i < descendants.getLength(); i++) {
        Element descendant = descendants.getItem(i);
        if (!StringUtils.isEmpty(descendant.getPropertyString("tagUrn"))) {
            nonHTMLElements.add(descendant);
        }
    }

    for (Element element : nonHTMLElements) {
        try {
            element.getParentNode().removeChild(element);
        } catch (Exception e) {
            // Skip this element. The DOM is in a bad state.
        }
    }

    super.filter(document);
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.line.LinePlugin.java

License:Open Source License

/**
 * Marks the BRs that have been added as spacers during the editing. These BRs were added to overcome a Mozilla bug
 * that prevents us from typing inside an empty block level element.
 *///w w  w .  j a  va2 s  .  c o m
protected void markSpacers() {
    Document document = getTextArea().getDocument();
    NodeList<com.google.gwt.dom.client.Element> brs = document.getBody().getElementsByTagName(BR);
    for (int i = 0; i < brs.getLength(); i++) {
        Element br = brs.getItem(i).cast();
        // Ignore the BRs that have been there from the beginning.
        if (LINE_BREAK.equals(br.getClassName())) {
            continue;
        }
        Node container = domUtils.getNearestBlockContainer(br);
        Node leaf = domUtils.getNextLeaf(br);
        boolean emptyLine = true;
        // Look if there is any visible element on the new line, taking care to remain in the current block
        // container.
        while (leaf != null && container == domUtils.getNearestBlockContainer(leaf)) {
            if (needsSpace(leaf)) {
                emptyLine = false;
                break;
            }
            leaf = domUtils.getNextLeaf(leaf);
        }
        if (emptyLine) {
            br.setClassName(SPACER);
        } else {
            br.removeAttribute(CLASS_NAME);
        }
    }
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.line.LinePlugin.java

License:Open Source License

/**
 * @see #markSpacers()/*from w ww.  j  a v  a  2 s. c om*/
 */
protected void unMarkSpacers() {
    Document document = getTextArea().getDocument();
    NodeList<com.google.gwt.dom.client.Element> brs = document.getBody().getElementsByTagName(BR);
    for (int i = 0; i < brs.getLength(); i++) {
        Element br = (Element) brs.getItem(i);
        if (SPACER.equals(br.getClassName())) {
            br.removeAttribute(CLASS_NAME);
        }
    }
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.line.LinePlugin.java

License:Open Source License

/**
 * Marks the initial line breaks so they are not mistaken as {@link #SPACER}.
 *///  w  w w  .j a va2 s  . c  o m
protected void markInitialLineBreaks() {
    Document document = getTextArea().getDocument();
    NodeList<com.google.gwt.dom.client.Element> brs = document.getBody().getElementsByTagName(BR);
    for (int i = 0; i < brs.getLength(); i++) {
        Element br = (Element) brs.getItem(i);
        // Skip the spaces and the BRs added by the browser before the document was loaded.
        if (!br.hasAttribute("_moz_dirty") && !SPACER.equals(br.getClassName())) {
            br.setClassName(LINE_BREAK);
        }
    }
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.line.LinePlugin.java

License:Open Source License

/**
 * Replaces {@code <div class="wikimodel-emptyline"/>} with {@code <p/>}. Empty lines are used by WikiModel to
 * separate block level elements, but since the user should be able to write on these empty lines we convert them to
 * paragraphs.//ww w.  ja v  a  2s  .  c o  m
 */
protected void replaceEmptyLinesWithParagraphs() {
    Document document = getTextArea().getDocument();
    NodeList<com.google.gwt.dom.client.Element> divs = document.getBody().getElementsByTagName("div");
    // Since NodeList is updated when one of its nodes are detached, we store the empty lines in a separate list.
    List<Node> emptyLines = new ArrayList<Node>();
    for (int i = 0; i < divs.getLength(); i++) {
        Element div = divs.getItem(i).cast();
        if (div.hasClassName("wikimodel-emptyline")) {
            emptyLines.add(div);
        }
    }
    // Replace the empty lines with paragraphs.
    for (Node emptyLine : emptyLines) {
        emptyLine.getParentNode().replaceChild(document.createPElement(), emptyLine);
    }
}

From source file:org.xwiki.gwt.wysiwyg.client.plugin.link.EmptyLinkFilter.java

License:Open Source License

/**
 * @return the list of empty anchors//from www. j  a  v a 2s. c o m
 * @see #isEmpty(Element)
 */
private List<Element> getEmptyAnchors() {
    List<Element> emptyAnchors = new ArrayList<Element>();
    NodeList<Element> anchorsList = rta.getDocument().getElementsByTagName("a");
    for (int i = 0; i < anchorsList.getLength(); i++) {
        Element anchor = anchorsList.getItem(i);
        if (isEmpty(AnchorElement.as(anchor))) {
            emptyAnchors.add(anchor);
        }
    }
    return emptyAnchors;
}