Examples with InterceptHandlerInstance org.olat.core.gui.render.intercept.InterceptHandlerInstance used on opensource projects

Example 6 with InterceptHandlerInstance

use of org.olat.core.gui.render.intercept.InterceptHandlerInstance in project openolat by klemens.

the class Renderer method render.

/**
 * used by the renderer, and also by the panel and tabbedpane renderer to delegate rendering
 * @param sb
 * @param source
 * @param args
 */
public void render(StringOutput sb, Component source, String[] args) {
    GlobalSettings gset = getGlobalSettings();
    boolean ajaxon = gset.getAjaxFlags().isIframePostEnabled();
    // wrap with div's so javascript can replace this component by doing a document.getElementById(cid).innerHTML and so on.
    boolean domReplaceable = source.isDomReplaceable();
    boolean useSpan = source.getSpanAsDomReplaceable();
    boolean domReplacementWrapperRequired = source.isDomReplacementWrapperRequired();
    boolean forceDebugDivs = gset.isIdDivsForced();
    if (source.isVisible()) {
        int lev = renderResult.getNestedLevel();
        if (lev > 60)
            throw new AssertException("components were nested more than 60 times, assuming endless loop bug: latest comp name: " + source.getComponentName());
        Translator componentTranslator = source.getTranslator();
        // identifier for dom replacement
        if (domReplaceable && domReplacementWrapperRequired && (ajaxon || forceDebugDivs)) {
            if (useSpan) {
                sb.append("<span id='o_c").append(source.getDispatchID());
            } else {
                sb.append("<div id='o_c").append(source.getDispatchID());
            }
            if (Settings.isDebuging()) {
            // sb.append("' title='").append(source.getComponentName());
            }
            sb.append("'>");
        }
        ComponentRenderer cr = findComponentRenderer(source);
        URLBuilder cubu = urlBuilder.createCopyFor(source);
        renderResult.incNestedLevel();
        // ---- for gui debug mode, direct the rendering to a special componentrenderer
        InterceptHandlerInstance dhi = renderResult.getInterceptHandlerInstance();
        if (dhi != null) {
            cr = dhi.createInterceptComponentRenderer(cr);
        }
        try {
            int preRenderLength = sb.length();
            cr.render(this, sb, source, cubu, componentTranslator, renderResult, args);
            if (preRenderLength == sb.length()) {
                // Add bugfix for IE min-height on empty div problem: min-height does
                // not get applied when div contains an empty comment.
                // Affects IE6, IE7
                sb.append("<!-- empty -->");
            }
            source.setDirty(false);
        } catch (Exception e) {
            // in order to produce a decent error msg, we need to postpone the
            // exception
            renderResult.setRenderExceptionInfo("exception while rendering component '" + source.getComponentName() + "' (" + source.getClass().getName() + ") " + source.getListenerInfo() + "<br />Message of exception: " + e.getMessage(), e);
        }
        renderResult.decNestedLevel();
        if (ajaxon && domReplaceable && domReplacementWrapperRequired) {
            if (useSpan) {
                sb.append("</span>");
            } else {
                sb.append("</div>");
            }
        }
    } else {
        // not visible
        if (domReplaceable && (ajaxon || forceDebugDivs)) {
            // browser dom tree
            if (useSpan) {
                sb.append("<span id=\"o_c").append(source.getDispatchID()).append("\"></span>");
            } else {
                // Add bugfix for IE min-height on empty div problem: min-height does
                // not get applied when div contains an empty comment.
                // Affects IE6, IE7
                sb.append("<div id=\"o_c").append(source.getDispatchID()).append("\"><!-- empty --></div>");
            }
        }
    }
}