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:com.brazoft.foundation.gwt.client.component.ElementResolver.java

License:Apache License

public static Element getElementByTagName(Element parent, String tagName) {
    NodeList<Element> nodeList = parent.getElementsByTagName(tagName);

    if (nodeList.getLength() > 0) {
        return nodeList.getItem(0);
    }//from  w  w w .  jav  a  2s  .  c o  m

    return null;
}

From source file:com.brazoft.foundation.gwt.client.component.ElementResolver.java

License:Apache License

public static Element getChildByIdRec(Element parent, String id) {
    NodeIterable<Node> elements = new NodeIterable<Node>(parent.getChildNodes());

    for (Node node : elements) {
        Element child = (Element) node;
        if (child != null && child.getId() != null) {
            if (child.getId().equals(id)) {
                return child;
            }/*from   w  ww  . ja  v  a 2s.  co  m*/
            NodeList<Node> childNodes = child.getChildNodes();
            for (int cii = 0; cii < childNodes.getLength(); cii++) {
                Element child2 = (Element) childNodes.getItem(cii);
                Element childByIdRec = getChildByIdRec(child2, id);
                if (childByIdRec != null) {
                    return childByIdRec;
                }
            }
        }
    }

    return null;
}

From source file:com.calclab.emite.browser.client.DomAssist.java

License:Open Source License

/**
 * Remove all the childs of the given element
 * //from ww  w .  j a v a  2 s . c o  m
 * @param element
 *            the element
 */
public void clearElement(final Element element) {
    final NodeList<Node> childs = element.getChildNodes();
    for (int index = 0, total = childs.getLength(); index < total; index++) {
        element.removeChild(childs.getItem(index));
    }

}

From source file:com.calclab.emite.browser.client.DomAssist.java

License:Open Source License

/**
 * Retrieves all the div on the page that matches the given class
 * /*from   w ww. j a va 2s .  c  o m*/
 * @param cssClass
 *            the css class to match
 * @return a list of elements
 */
public ArrayList<Element> findElementsByClass(final String cssClass) {
    Log.debug("Finding elements div." + cssClass);
    final ArrayList<Element> elements = new ArrayList<Element>();
    final Document document = Document.get();
    final NodeList<Element> divs = document.getElementsByTagName("div");
    for (int index = 0, total = divs.getLength(); index < total; index++) {
        final Element div = divs.getItem(index);
        final String[] classes = div.getClassName().split(" ");
        for (final String className : classes) {
            if (cssClass.equals(className)) {
                elements.add(div);
            }
        }
    }
    return elements;
}

From source file:com.calclab.emite.browser.client.PageAssist.java

License:Open Source License

/**
 * Get the value of meta information writen in the html page. The meta
 * information is a html tag with name of meta usually placed inside the the
 * head section with two attributes: id and content. For example:
 * //  ww w  .  java 2 s.c  o  m
 * <code>&lt;meta name="name" value="userName" /&gt;</code>
 * 
 * @param id
 *            the 'id' value of the desired meta tag
 * @return the value of the attribute 'value' or null if not found
 */
public static final String getMeta(final String id) {
    String value = null;
    Element element = null;
    final NodeList<Element> elements = Document.get().getElementsByTagName("meta");
    if (elements != null) {
        for (int i = 0; i < elements.getLength() && element == null; i++) {
            final Element candidate = elements.getItem(i);
            if (id.equals(candidate.getAttribute("name"))) {
                element = candidate;
            }
        }
    }
    if (element == null) {
        element = DOM.getElementById(id);
    }
    if (element != null) {
        value = element.getPropertyString("content");
    }
    return value;
}

From source file:com.calclab.emite.browser.PageAssist.java

License:Open Source License

/**
 * Get the value of meta information written in the html page. The meta
 * information is a html tag with name of meta usually placed inside the the
 * head section with two attributes: id and content. For example:
 * /*www  . j  a v  a  2  s  . c o m*/
 * <code>&lt;meta name="name" value="userName" /&gt;</code>
 * 
 * @param id
 *            the 'id' value of the desired meta tag
 * @param defaultValue
 *            the default value to return if the meta is not found
 * @return the value of the attribute 'value' or null if not found
 */
@Nullable
public static final String getMeta(final String id, @Nullable final String defaultValue) {
    checkNotNull(id);
    final NodeList<Element> elements = Document.get().getElementsByTagName("meta");
    for (int i = 0; i < elements.getLength(); i++) {
        final Element candidate = elements.getItem(i);
        if (id.equals(candidate.getAttribute("name")))
            return candidate.getPropertyString("content");
    }

    final Element domElement = DOM.getElementById(id);
    if (domElement != null)
        return domElement.getPropertyString("content");

    return defaultValue;
}

From source file:com.centimia.gxt.sample.widgetdashboard.client.WidgetDashboard.java

License:Open Source License

public void onModuleLoad() {
    String styleSheetName = "resources/css/gxt-all.css";
    if (LocaleInfo.getCurrentLocale().isRTL()) {
        styleSheetName = "resources/css/gxt-all-rtl.css";
    }/* w w  w .  j a v a  2s . co  m*/

    // Find existing style sheets that need to be removed
    boolean styleSheetsFound = false;
    final HeadElement headElem = StyleSheetLoader.getHeadElement();
    final List<Element> toRemove = new ArrayList<Element>();
    NodeList<Node> children = headElem.getChildNodes();
    for (int i = 0; i < children.getLength(); i++) {
        Node node = children.getItem(i);
        if (node.getNodeType() == Node.ELEMENT_NODE) {
            Element elem = Element.as(node);
            if (elem.getTagName().equalsIgnoreCase("link")
                    && elem.getPropertyString("rel").equalsIgnoreCase("stylesheet")) {
                styleSheetsFound = true;
                String href = elem.getPropertyString("href");
                // If the correct style sheets are already loaded, then we should have
                // nothing to remove.
                if (!href.equals(styleSheetName) && href.indexOf("gxt") != -1) {
                    toRemove.add(elem);
                }
            }
        }
    }

    // Return if we already have the correct style sheets
    if (styleSheetsFound && toRemove.size() != 0) {
        // Remove the old style sheets
        for (Element elem : toRemove) {
            headElem.removeChild(elem);
        }
    }

    ExampleServiceAsync service = (ExampleServiceAsync) GWT.create(ExampleService.class);
    ServiceDefTarget endpoint = (ServiceDefTarget) service;
    String moduleRelativeURL = SERVICE;
    endpoint.setServiceEntryPoint(moduleRelativeURL);
    Registry.register(SERVICE, service);

    FileServiceAsync fileservice = (FileServiceAsync) GWT.create(FileService.class);
    endpoint = (ServiceDefTarget) fileservice;
    moduleRelativeURL = FILE_SERVICE;
    endpoint.setServiceEntryPoint(moduleRelativeURL);
    Registry.register(FILE_SERVICE, fileservice);

    ExamplesModel model = new ExamplesModel();
    for (int i = 0; i < model.getChildren().size(); i++) {
        Category cat = (Category) model.getChildren().get(i);
        for (int j = 0; j < cat.getChildren().size(); j++) {
            Entry entry = (Entry) cat.getChildren().get(j);
            examples.put(entry.getId(), entry);
        }
    }

    Registry.register(MODEL, model);
    viewport = new Viewport();

    BorderLayout layout = new BorderLayout();

    demoPanel = new ContentPanel();
    demoPanel.setLayout(new BorderLayout());

    viewport.setLayout(layout);

    createNorth();

    createTree();
    panel.setResizeTabs(true);
    panel.setMinTabWidth(115);
    panel.setAnimScroll(true);
    panel.setTabScroll(true);
    panel.setCloseContextMenu(true);

    replaceView("basicgrid");
    demoPanel.add(panel, new BorderLayoutData(LayoutRegion.CENTER));

    viewport.add(tree, new BorderLayoutData(LayoutRegion.WEST));
    viewport.add(demoPanel, new BorderLayoutData(LayoutRegion.CENTER));

    StyleSheetLoader.loadStyleSheet(styleSheetName, "ext-el-mask", this);
}

From source file:com.cgxlib.xq.client.impl.research.SelectorEngineJS.java

License:Apache License

private static void getDescendantNodes(JsNodeArray matchingElms, String nextTagStr, Node prevRef) {
    NodeList<Element> children = getElementsByTagName(nextTagStr, prevRef);
    for (int k = 0, klen = children.getLength(); k < klen; k++) {
        Node child = children.getItem(k);
        if (child.getParentNode() == prevRef) {
            matchingElms.addNode(child);
        }/*from   ww  w  . ja  v  a 2 s .co  m*/
    }
}

From source file:com.cgxlib.xq.client.impl.research.SelectorEngineJS.java

License:Apache License

public NodeList<Element> select(String sel, Node ctx) {
    String selectors[] = sel.replace("\\s*(,)\\s*", "$1").split(",");
    boolean identical = false;
    JsNodeArray elm = JsNodeArray.create();
    for (int a = 0, len = selectors.length; a < len; a++) {
        if (a > 0) {
            identical = false;/*from   ww w .  j  a  va 2 s .c o m*/
            for (int b = 0, bl = a; b < bl; b++) {
                if (JsUtils.eq(selectors[a], selectors[b])) {
                    identical = true;
                    break;
                }
            }
            if (identical) {
                continue;
            }
        }
        String currentRule = selectors[a];
        JsObjectArray<String> cssSelectors = selectorSplitRegExp.match(currentRule);
        JsNodeArray prevElem = JsNodeArray.create(ctx);
        for (int i = 0, slen = cssSelectors.length(); i < slen; i++) {
            JsNodeArray matchingElms = JsNodeArray.create();
            String rule = cssSelectors.get(i);
            if (i > 0 && childOrSiblingRefRegExp.test(rule)) {
                JsObjectArray<String> childOrSiblingRef = childOrSiblingRefRegExp.exec(rule);
                if (JsUtils.truth(childOrSiblingRef)) {
                    JsObjectArray<String> nextTag = new JsRegexp("^\\w+").exec(cssSelectors.get(i + 1));
                    JsRegexp nextRegExp = null;
                    String nextTagStr = null;
                    if (JsUtils.truth(nextTag)) {
                        nextTagStr = nextTag.get(0);
                        nextRegExp = new JsRegexp("(^|\\s)" + nextTagStr + "(\\s|$)", "i");
                    }
                    for (int j = 0, jlen = prevElem.size(); j < jlen; j++) {
                        Node prevRef = prevElem.getNode(j);
                        String ref = childOrSiblingRef.get(0);
                        if (JsUtils.eq(">", ref)) {
                            getDescendantNodes(matchingElms, nextTagStr, prevRef);
                        } else if (JsUtils.eq("+", ref)) {
                            getSiblingNodes(matchingElms, nextTag, nextRegExp, prevRef);
                        } else if (JsUtils.eq("~", ref)) {
                            getGeneralSiblingNodes(matchingElms, nextTag, nextRegExp, prevRef);
                        }
                    }
                    prevElem = matchingElms;
                    clearAdded(prevElem);
                    rule = cssSelectors.get(++i);
                    if (new JsRegexp("^\\w+$").test(rule)) {
                        continue;
                    }
                    setSkipTag(prevElem, true);
                }
            }
            JsObjectArray<String> cssSelector = cssSelectorRegExp.exec(rule);
            SplitRule splitRule = new SplitRule(
                    !JsUtils.truth(cssSelector.get(1)) || JsUtils.eq(cssSelector.get(3), "*") ? "*"
                            : cssSelector.get(1),
                    !JsUtils.eq(cssSelector.get(3), "*") ? cssSelector.get(2) : null, cssSelector.get(4),
                    cssSelector.get(6), cssSelector.get(10));
            if (JsUtils.truth(splitRule.id)) {
                Element domelem = Document.get().getElementById(splitRule.id.substring(1));
                if (JsUtils.truth(domelem)) {
                    matchingElms = JsNodeArray.create(domelem);
                }
                prevElem = matchingElms;
            } else if (JsUtils.truth(splitRule.tag) && !isSkipped(prevElem)) {
                if (i == 0 && matchingElms.size() == 0 && prevElem.size() == 1) {
                    prevElem = matchingElms = JsNodeArray
                            .create(getElementsByTagName(splitRule.tag, prevElem.getNode(0)));
                } else {
                    NodeList<Element> tagCollectionMatches;
                    for (int l = 0, ll = prevElem.size(); l < ll; l++) {
                        tagCollectionMatches = getElementsByTagName(splitRule.tag, prevElem.getNode(l));
                        for (int m = 0, mlen = tagCollectionMatches.getLength(); m < mlen; m++) {
                            Node tagMatch = tagCollectionMatches.getItem(m);

                            if (!isAdded(tagMatch)) {
                                setAdded(tagMatch, true);
                                matchingElms.addNode(tagMatch);
                            }
                        }
                    }
                    prevElem = matchingElms;
                    clearAdded(prevElem);
                }
                if (matchingElms.size() == 0) {
                    break;
                }
                setSkipTag(prevElem, false);
                if (JsUtils.truth(splitRule.allClasses)) {
                    String[] allClasses = splitRule.allClasses.replaceFirst("^\\.", "").split("\\.");
                    JsRegexp[] regExpClassNames = new JsRegexp[allClasses.length];
                    for (int n = 0, nl = allClasses.length; n < nl; n++) {
                        regExpClassNames[n] = new JsRegexp("(^|\\s)" + allClasses[n] + "(\\s|$)");
                    }
                    JsNodeArray matchingClassElms = JsNodeArray.create();
                    for (int o = 0, olen = prevElem.size(); o < olen; o++) {
                        Element current = prevElem.getElement(o);
                        String elmClass = current.getClassName();
                        boolean addElm = false;
                        if (JsUtils.truth(elmClass) && !isAdded(current)) {
                            for (int p = 0, pl = regExpClassNames.length; p < pl; p++) {
                                addElm = regExpClassNames[p].test(elmClass);
                                if (!addElm) {
                                    break;
                                }
                            }
                            if (addElm) {
                                setAdded(current, true);
                                matchingClassElms.addNode(current);
                            }
                        }
                    }
                    clearAdded(prevElem);
                    prevElem = matchingElms = matchingClassElms;
                }
                if (JsUtils.truth(splitRule.allAttr)) {
                    JsObjectArray<String> allAttr = JsRegexp.match("\\[[^\\]]+\\]", "g", splitRule.allAttr);
                    JsRegexp[] regExpAttributes = new JsRegexp[allAttr.length()];
                    String[] regExpAttributesStr = new String[allAttr.length()];
                    JsRegexp attributeMatchRegExp = new JsRegexp(
                            "(\\w+)(\\^|\\$|\\*|\\||~)?=?[\"']?([\\w\u00C0-\uFFFF\\s\\-_\\.]+)?");
                    for (int q = 0, ql = allAttr.length(); q < ql; q++) {
                        JsObjectArray<String> attributeMatch = attributeMatchRegExp.exec(allAttr.get(q));
                        String attributeValue = JsUtils.truth(attributeMatch.get(3))
                                ? attributeMatch.get(3).replaceAll("\\.", "\\.")
                                : null;
                        String attrVal = attrToRegExp(attributeValue,
                                (JsUtils.or(attributeMatch.get(2), null)));
                        regExpAttributes[q] = (JsUtils.truth(attrVal) ? new JsRegexp(attrVal) : null);
                        regExpAttributesStr[q] = attributeMatch.get(1);
                    }
                    JsNodeArray matchingAttributeElms = JsNodeArray.create();

                    for (int r = 0, rlen = matchingElms.size(); r < rlen; r++) {
                        Element current = matchingElms.getElement(r);
                        boolean addElm = false;
                        for (int s = 0, sl = regExpAttributes.length; s < sl; s++) {
                            addElm = false;
                            JsRegexp attributeRegexp = regExpAttributes[s];
                            String currentAttr = getAttr(current, regExpAttributesStr[s]);
                            if (JsUtils.truth(currentAttr) && currentAttr.length() != 0) {
                                if (attributeRegexp == null || attributeRegexp.test(currentAttr)) {
                                    addElm = true;
                                }
                            }
                            if (!addElm) {
                                break;
                            }
                        }
                        if (addElm) {
                            matchingAttributeElms.addNode(current);
                        }
                    }
                    prevElem = matchingElms = matchingAttributeElms;
                }
                if (JsUtils.truth(splitRule.allPseudos)) {
                    JsRegexp pseudoSplitRegExp = new JsRegexp(":(\\w[\\w\\-]*)(\\(([^\\)]+)\\))?");

                    JsObjectArray<String> allPseudos = JsRegexp.match("(:\\w+[\\w\\-]*)(\\([^\\)]+\\))?", "g",
                            splitRule.allPseudos);
                    for (int t = 0, tl = allPseudos.length(); t < tl; t++) {
                        JsObjectArray<String> pseudo = pseudoSplitRegExp.match(allPseudos.get(t));
                        String pseudoClass = JsUtils.truth(pseudo.get(1)) ? pseudo.get(1).toLowerCase() : null;
                        String pseudoValue = JsUtils.truth(pseudo.get(3)) ? pseudo.get(3) : null;
                        matchingElms = getElementsByPseudo(matchingElms, pseudoClass, pseudoValue);
                        clearAdded(matchingElms);
                    }
                    prevElem = matchingElms;
                }
            }
        }
        elm.pushAll(prevElem);
    }

    return JsUtils.unique(elm.<JsArray<Element>>cast()).cast();
}

From source file:com.cgxlib.xq.client.impl.SelectorEngine.java

License:Apache License

public NodeList<Element> filter(NodeList<Element> nodes, Predicate p) {
    JsNodeArray res = JsNodeArray.create();
    for (int i = 0, l = nodes.getLength(), j = 0; i < l; i++) {
        Element e = nodes.getItem(i);
        if (p.f(e, i)) {
            res.addNode(e, j++);//from  w  w  w .  j  a  va2  s .c  o m
        }
    }
    return res;
}