Example usage for javax.servlet.jsp.tagext Tag doStartTag

Introduction

In this page you can find the example usage for javax.servlet.jsp.tagext Tag doStartTag.

Prototype

int doStartTag() throws JspException;

Source Link

Document

Process the start tag for this instance.

Usage

From source file:de.micromata.genome.gwiki.page.gspt.TagSupport.java

/**
 * @return true if body should be included
 *//*  ww  w.  jav a  2 s . c  o  m*/
public static boolean initTag(Tag tag, List<Object> attributes, ChildPageContext ctx) throws Exception {
    Tag ptag = ctx.getCurrentTag();
    if (log.isDebugEnabled())
        log.debug("Init tag: " + tag.getClass().getName());

    PageContext pctx = ctx;
    if (ctx.isUseParentTagContext() == true)
        pctx = ctx.getParentPageContext();
    tag.setPageContext(pctx);
    tag.setParent(ptag);
    attributes = evalAttributes(tag, attributes, ctx);
    setAttributes(tag, attributes, ctx);
    ctx.setCurrentTag(tag);
    int r = tag.doStartTag();
    ctx.getTagStack().push(new Pair<Tag, Integer>(tag, r));
    JspWriter oout = pctx.getOut();
    ctx.setInternalGroovyOut(createPrintWriter(oout));
    if (r != javax.servlet.jsp.tagext.Tag.SKIP_BODY && r != javax.servlet.jsp.tagext.Tag.EVAL_BODY_INCLUDE
            && tag instanceof BodyTag) {

        BodyTag btag = (BodyTag) tag;

        JspWriter out = pctx.pushBody();
        PrintWriterPatched newPout = createPrintWriter(out, true);
        ctx.setInternalGroovyOut(newPout);

        btag.setBodyContent((javax.servlet.jsp.tagext.BodyContent) out);
        btag.doInitBody();
    }
    boolean ret = r != javax.servlet.jsp.tagext.Tag.SKIP_BODY;
    if (log.isDebugEnabled())
        log.debug("Init tag: " + tag.getClass().getName() + ": " + ret);
    return ret;
}

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From source file:de.micromata.genome.gwiki.page.gspt.TagSupport.java

/**
 * @return if return false page will be skipped
 *///from   ww w. j  a va 2  s.c o m
public static boolean initSimpleTag(Tag tag, List<Object> attributes, ChildPageContext ctx) throws Exception {
    if (log.isDebugEnabled())
        log.debug("Init simple tag: " + tag.getClass().getName());
    Tag ptag = ctx.getCurrentTag();
    PageContext pctx = ctx;// .getBrickContext().getPageContext();
    if (ctx.isUseParentTagContext() == true)
        pctx = ctx.getParentPageContext();
    tag.setPageContext(pctx);
    tag.setParent(ptag);
    attributes = evalAttributes(tag, attributes, ctx);
    setAttributes(tag, attributes, ctx);
    ctx.setCurrentTag(tag);
    int r = tag.doStartTag();
    // ctx.getTagStack().push(new Pair<Tag, Integer>(tag, r));
    r = tag.doEndTag();
    // ctx.getTagStack().pop();
    ctx.setCurrentTag(ptag);
    return r != javax.servlet.jsp.tagext.Tag.SKIP_PAGE;
}

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From source file:com.icesoft.faces.webapp.parser.Parser.java

/**
 * This member mimicks the JSP tag processing lifecyle across the tag
 * processing tree to produce the JSF component tree.
 *
 * @param wire         The tag's wire/*ww w  . j a v  a 2 s .c o m*/
 * @param pageContext  The page context
 * @param facesContext The faces context
 * @param componentIds
 * @throws JspException
 */
public void executeJspLifecycle(TagWire wire, PageContext pageContext, FacesContext facesContext,
        Set componentIds) throws JspException {
    // Start of lifecycle;
    boolean processingViewTag = false;
    Tag tag = wire.getTag();
    tag.setPageContext(pageContext);
    // Start tag processing;
    tag.doStartTag();

    UIComponent myComponent = null; // reference will be used after doEndTag
    if (tag instanceof UIComponentTag) {
        UIComponentTag compTag = (UIComponentTag) tag;
        myComponent = compTag.getComponentInstance();

        if (myComponent != null) {
            if (myComponent instanceof UIViewRoot) {
                myComponent.setId("_view");
                processingViewTag = true;
            }

            String componentId = myComponent.getClientId(facesContext);
            if (componentIds.contains(componentId))
                throw new IllegalStateException("Duplicate component ID : " + componentId);
            componentIds.add(componentId);
        }
    }

    // Now process tag children;
    Iterator children = wire.getChildren().iterator();
    while (children.hasNext()) {
        TagWire childWire = (TagWire) children.next();
        executeJspLifecycle(childWire, pageContext, facesContext, componentIds);
    }
    //Do tag body processing. This is not full-fledged body processing. It only calls the doAfterBody() member
    if (!processingViewTag && tag instanceof UIComponentBodyTag) {
        UIComponentBodyTag bodyTag = (UIComponentBodyTag) tag;
        if (bodyTag.getBodyContent() == null) {
            //body content of custom tag should not be null, so create one in here to satisfy the
            //checking in jsf 1.0 impl.
            JspWriter jspWriter = new JspWriterImpl(new PrintWriter(System.out));
            BodyContentImpl imp = new BodyContentImpl(jspWriter);
            bodyTag.setBodyContent(imp);
        }
        bodyTag.doAfterBody();
    }
    // Do end tag processing;
    tag.doEndTag();

    // ICE-3443: to save memory, trim the COMPONENT_IDS list capacity
    // to its actual size
    if (null != myComponent) {
        Map attributes = myComponent.getAttributes();
        ArrayList idsList = (ArrayList) attributes.get("javax.faces.webapp.COMPONENT_IDS");
        if (null != idsList) {
            idsList.trimToSize();
        }
    }
}

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From source file:org.seasar.mayaa.impl.engine.processor.JspProcessor.java

public ProcessStatus doStartProcess(Page topLevelPage) {
    if (_tagClass == null) {
        throw new IllegalStateException();
    }//from  w ww .j  a  v a  2 s  .  c om
    topLevelPage.registBeginRenderNotifier(this);
    clearLoadedTag();
    Tag customTag = getLoadedTag();

    // javax.servlet.jsp.tagext.SimpleTag
    Object targetTag = customTag;
    if (customTag instanceof SimpleTagWrapper) {
        SimpleTagWrapper simpleTagWrapper = (SimpleTagWrapper) customTag;
        SimpleTag simpleTag = simpleTagWrapper.getSimpleTag();
        int childProcessorSize = getChildProcessorSize();
        if (childProcessorSize > 0) {
            simpleTag.setJspBody(new ProcessorFragment(simpleTagWrapper, this, topLevelPage));
        }
        targetTag = simpleTag;
    }
    for (Iterator it = iterateProperties(); it.hasNext();) {
        ProcessorProperty property = (ProcessorProperty) it.next();
        ObjectUtil.setProperty(targetTag, property.getName().getQName().getLocalName(),
                property.getValue().execute(null));
    }

    // javax.servlet.jsp.tagext.DynamicAttributes
    if (TLDProcessorDefinition.class.isAssignableFrom(getProcessorDefinition().getClass())) {
        TLDProcessorDefinition tldDef = (TLDProcessorDefinition) getProcessorDefinition();
        if (tldDef.isDynamicAttribute()) {
            setupDynamicAttributes(customTag);
        }
    }

    ProcessorTreeWalker processor = this;
    while ((processor = processor.getParentProcessor()) != null) {
        if (processor instanceof JspProcessor) {
            JspProcessor jspProcessor = (JspProcessor) processor;
            Tag parentTag = jspProcessor.getLoadedTag();
            if (parentTag == null) {
                throw new IllegalStateException("the parent processor has no custom tag.");
            }
            customTag.setParent(parentTag);
            break;
        }
    }
    try {
        pushNestedVariables();
        return getProcessStatus(customTag.doStartTag(), true);
    } catch (JspException e) {
        throw createJspRuntimeException(getOriginalNode(), getInjectedNode(), e);
    }
}

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