public void initRun(Writer target, GrailsWebRequest webRequest) {
this.outputStack = GroovyPageOutputStack.currentStack(true, target, false, true);
this.out = outputStack.getProxyWriter();
this.webRequest = webRequest;
final Map map = getBinding().getVariables();
if (map.containsKey(APPLICATION_CONTEXT)) {
final ApplicationContext applicationContext =
(ApplicationContext) map.get(APPLICATION_CONTEXT);
if (applicationContext != null
&& applicationContext.containsBean(GrailsPluginManager.BEAN_NAME)) {
final GrailsPluginManager pluginManager =
applicationContext.getBean(GrailsPluginManager.BEAN_NAME, GrailsPluginManager.class);
this.pluginContextPath = pluginManager.getPluginPathForInstance(this);
}
}
if (webRequest != null) {
this.webRequest.setOut(this.out);
}
getBinding().setVariable(OUT, this.out);
}
public static Object captureTagOutput(
TagLibraryLookup gspTagLibraryLookup,
String namespace,
String tagName,
Map attrs,
Object body,
GrailsWebRequest webRequest) {
if (!(attrs instanceof GroovyPageAttributes)) {
attrs = new GroovyPageAttributes(attrs);
}
GroovyObject tagLib = lookupCachedTagLib(webRequest, gspTagLibraryLookup, namespace, tagName);
boolean preferSubChunkWhenWritingToOtherBuffer = resolvePreferSubChunk(namespace, tagName);
Closure actualBody =
createOutputCapturingClosure(
tagLib, body, webRequest, preferSubChunkWhenWritingToOtherBuffer);
final GroovyPageTagWriter out = new GroovyPageTagWriter(preferSubChunkWhenWritingToOtherBuffer);
try {
GroovyPageOutputStack.currentStack().push(out);
Object tagLibProp = tagLib.getProperty(tagName); // retrieve tag lib and create wrapper writer
if (tagLibProp instanceof Closure) {
Closure tag = (Closure) ((Closure) tagLibProp).clone();
Object bodyResult = null;
if (tag.getParameterTypes().length == 1) {
bodyResult = tag.call(new Object[] {attrs});
if (actualBody != null && actualBody != EMPTY_BODY_CLOSURE) {
Object bodyResult2 = actualBody.call();
if (bodyResult2 != null) {
out.print(bodyResult2);
}
}
} else if (tag.getParameterTypes().length == 2) {
bodyResult = tag.call(new Object[] {attrs, actualBody});
} else {
throw new GrailsTagException(
"Tag ["
+ tagName
+ "] does not specify expected number of params in tag library ["
+ tagLib.getClass().getName()
+ "]");
}
boolean returnsObject = gspTagLibraryLookup.doesTagReturnObject(namespace, tagName);
if (returnsObject && bodyResult != null && !(bodyResult instanceof Writer)) {
return bodyResult;
}
// add some method to always return string, configurable?
return out.getBuffer();
} else {
throw new GrailsTagException(
"Tag ["
+ tagName
+ "] does not exist in tag library ["
+ tagLib.getClass().getName()
+ "]");
}
} finally {
GroovyPageOutputStack.currentStack().pop();
}
}
public void cleanup() {
outputStack.pop(true);
}