Example usage for com.liferay.portal.kernel.xml Element attributeIterator

Introduction

In this page you can find the example usage for com.liferay.portal.kernel.xml Element attributeIterator.

Prototype

public Iterator<Attribute> attributeIterator();

Source Link

Usage

From source file:com.liferay.faces.portal.component.inputsearch.internal.InputSearchRenderer.java

License:Open Source License

@Override
protected StringBuilder getMarkup(UIComponent uiComponent, StringBuilder markup) throws Exception {

    //J-//from   w w  w.  ja  v a2  s .  c  o m
    // NOTE: The specified markup looks like the following (HTML comments added for clarity):
    //
    // <!-- Opening <div> rendered by html/taglib/ui/input_search/page.jsp -->
    // <div class="input-append">
    //
    //    <!-- Input text field rendered by html/taglib/ui/input_search/page.jsp -->
    //    <input class="search-query span9" id="...:jid42" name="..." placeholder="" type="text" value="" />
    //
    //    <!-- Search button rendered by html/taglib/ui/input_search/page.jsp -->
    //    <button class="btn" type="submit">Search</button>
    //
    //    <!-- HtmlInputText (dynamically added JSF child component) -->
    //    <input type="text" name="...:htmlInputText" />
    //
    //    <!-- HtmlCommandButton (dynamically added JSF child component) -->
    //    <input type="submit" name="...:htmlCommandButton" value="" />
    //
    // <!-- Closing </div> rendered by html/taglib/ui/input_search/page.jsp -->
    // </div>
    //J+

    // Parse the generated markup as an XML document.
    InputSearch inputSearch = cast(uiComponent);
    Document document = SAXReaderUtil.read(markup.toString());
    Element rootElement = document.getRootElement();

    // Locate the first/main input element in the XML document. This is the one that will contain contain the value
    // that will be submitted in the postback and received by the decode(FacesContext, UIComponent) method).
    String xpathInput = "//input[contains(@id, '" + uiComponent.getClientId() + "')]";
    Element mainInputElement = (Element) rootElement.selectSingleNode(xpathInput);

    if (mainInputElement != null) {

        // Copy the value attribute of the InputSearch component to the first input element in the XML document.
        mainInputElement.attribute("value").setValue((String) inputSearch.getValue());

        // Locate the dynamically added HtmlInputText and HtmlCommandButton child components.
        String xpathInputs = "//input[@type='text']";
        List<Node> inputElements = rootElement.selectNodes(xpathInputs);

        if ((inputElements != null) && (inputElements.size() == 2)) {

            // Copy each "on" attribute name/value pairs from the HtmlInputText to the first input element in
            // the XML document. This will enable all of the AjaxBehavior events like keyup/keydown to work.
            Element htmlInputTextElement = (Element) inputElements.get(1);
            Iterator<Attribute> attributeIterator = htmlInputTextElement.attributeIterator();

            while (attributeIterator.hasNext()) {
                Attribute attribute = attributeIterator.next();
                String attributeName = attribute.getName();

                if (attributeName.startsWith("on")) {
                    mainInputElement.addAttribute(attributeName, attribute.getValue());
                }
            }

            // Remove the HtmlInputText <input> from the XML document so that only one text field is rendered.
            htmlInputTextElement.getParent().remove(htmlInputTextElement);
        }
    }

    // Locate the HtmlCommandButton in the XML document.
    List<UIComponent> children = uiComponent.getChildren();
    HtmlCommandButton htmlCommandButton = (HtmlCommandButton) children.get(1);
    String htmlCommandButtonClientId = htmlCommandButton.getClientId();

    // Note that if there is an AjaxBehavior, then the rendered HtmlCommandButton can be located in the XML document
    // via the name attribute. Otherwise it can be located in the XML document via the id attribute.
    String htmlCommandButtonXPath = "//input[contains(@name,'" + htmlCommandButtonClientId
            + "') and @type='submit']";
    Element htmlCommandButtonElement = (Element) rootElement.selectSingleNode(htmlCommandButtonXPath);

    if (htmlCommandButtonElement == null) {
        htmlCommandButtonXPath = "//input[contains(@id,'" + htmlCommandButtonClientId
                + "') and @type='submit']";
        htmlCommandButtonElement = (Element) rootElement.selectSingleNode(htmlCommandButtonXPath);
    }

    if (htmlCommandButtonElement != null) {

        // Locate the <button> element in the XML document that was rendered by page.jsp
        Element buttonElement = (Element) rootElement.selectSingleNode("//button[@type='submit']");

        if (buttonElement != null) {

            // Copy attributes found on the HtmlCommandButton <input> element to the <button> element that was
            // rendered by page.jsp
            Attribute onClickAttr = htmlCommandButtonElement.attribute("onclick");

            if (onClickAttr != null) {
                buttonElement.addAttribute("onclick", onClickAttr.getValue());
            }

            Attribute nameAttr = htmlCommandButtonElement.attribute("name");

            if (nameAttr != null) {
                buttonElement.addAttribute("name", nameAttr.getValue());
            }

            Attribute idAttr = htmlCommandButtonElement.attribute("id");

            if (idAttr != null) {
                buttonElement.addAttribute("id", idAttr.getValue());
            }

            // Remove the HtmlCommandButton <input> from the XML document so that only one button is rendered.
            htmlCommandButtonElement.getParent().remove(htmlCommandButtonElement);
        }
    }

    // Returned the modified verson of the specified markup.
    return new StringBuilder(rootElement.asXML());
}

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