/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.cocoon.components.flow.javascript.fom;
import java.util.Iterator;
import java.util.List;
import org.apache.avalon.framework.logger.LogEnabled;
import org.apache.avalon.framework.logger.Logger;
import org.apache.avalon.framework.service.ServiceManager;
import org.apache.cocoon.components.flow.ContinuationsManager;
import org.apache.cocoon.components.flow.WebContinuation;
import org.mozilla.javascript.Context;
import org.mozilla.javascript.Function;
import org.mozilla.javascript.NativeArray;
import org.mozilla.javascript.Scriptable;
import org.mozilla.javascript.ScriptableObject;
import org.mozilla.javascript.Undefined;
import org.mozilla.javascript.Wrapper;
import org.mozilla.javascript.continuations.Continuation;
/**
*
* @version CVS $Id$
*/
public class FOM_WebContinuation extends ScriptableObject implements LogEnabled {
WebContinuation wk;
private Logger logger;
static class UserObject {
boolean isBookmark;
PageLocalScopeImpl pageLocal;
}
static private boolean isBookmark(WebContinuation wk) {
UserObject userObj = (UserObject)wk.getUserObject();
if (userObj == null) {
return false;
}
return userObj.isBookmark;
}
public FOM_WebContinuation() {
this(null);
}
public FOM_WebContinuation(WebContinuation wk) {
this.wk = wk;
}
public void enableLogging(Logger logger) {
this.logger = logger;
}
// new FOM_WebContinuation([Continuation] continuation,
// [FOM_WebContinuation] parent,
// [Number] timeToLive)
public static Object jsConstructor(Context cx, Object[] args,
Function ctorObj,
boolean inNewExpr)
throws Exception {
FOM_WebContinuation result = null;
if (args.length < 1) {
// error
}
Continuation c = (Continuation)unwrap(args[0]);
FOM_WebContinuation parent = null;
if (args.length > 1) {
parent = (FOM_WebContinuation)args[1];
}
int timeToLive = 0;
if (args.length > 2) {
timeToLive =
(int)org.mozilla.javascript.Context.toNumber(args[2]);
}
WebContinuation wk;
Scriptable scope = getTopLevelScope(c);
FOM_Cocoon cocoon = (FOM_Cocoon)getProperty(scope, "cocoon");
ServiceManager componentManager = cocoon.getServiceManager();
ContinuationsManager contMgr = (ContinuationsManager)
componentManager.lookup(ContinuationsManager.ROLE);
wk = contMgr.createWebContinuation(c,
(parent == null ? null : parent.getWebContinuation()),
timeToLive,
cocoon.getInterpreterId(),
null);
result = new FOM_WebContinuation(wk);
result.enableLogging(cocoon.getLogger());
result.setParentScope(getTopLevelScope(scope));
result.setPrototype(getClassPrototype(scope, result.getClassName()));
return result;
}
public String getClassName() {
return "FOM_WebContinuation";
}
public Object jsFunction_getAttribute(String name) {
return org.mozilla.javascript.Context.toObject(
wk.getAttribute(name),
getParentScope());
}
public void jsFunction_setAttribute(String name, Object value) {
wk.setAttribute(name, unwrap(value));
}
public void jsFunction_removeAttribute(String name) {
wk.removeAttribute(name);
}
public Object jsFunction_getAttributeNames() {
return org.mozilla.javascript.Context.toObject(
wk.getAttributeNames(),
getParentScope());
}
public String jsGet_id() {
return wk.getId();
}
public Continuation jsGet_continuation() {
return (Continuation)wk.getContinuation();
}
public FOM_WebContinuation jsFunction_getParent() {
WebContinuation parent = wk.getParentContinuation();
if (parent == null) {
return null;
}
FOM_WebContinuation pwk = new FOM_WebContinuation(parent);
pwk.enableLogging(logger);
pwk.setParentScope(getParentScope());
pwk.setPrototype(getClassPrototype(getParentScope(),
pwk.getClassName()));
return pwk;
}
public NativeArray jsFunction_getChildren() throws Exception {
List list = wk.getChildren();
NativeArray arr =
(NativeArray)org.mozilla.javascript.Context.getCurrentContext().newObject(getParentScope(),
"Array",
new Object[]{new Integer(list.size())});
Iterator iter = list.iterator();
for (int i = 0; iter.hasNext(); i++) {
WebContinuation child = (WebContinuation)iter.next();
FOM_WebContinuation cwk = new FOM_WebContinuation(child);
cwk.enableLogging(logger);
cwk.setParentScope(getParentScope());
cwk.setPrototype(getClassPrototype(getParentScope(),
cwk.getClassName()));
arr.put(i, arr, cwk);
}
return arr;
}
public void jsFunction_invalidate() throws Exception {
ContinuationsManager contMgr = null;
FOM_Cocoon cocoon =
(FOM_Cocoon)getProperty(getTopLevelScope(this), "cocoon");
ServiceManager componentManager = cocoon.getServiceManager();
contMgr = (ContinuationsManager)
componentManager.lookup(ContinuationsManager.ROLE);
contMgr.invalidateWebContinuation(wk);
}
public void jsFunction_display() {
if (this.logger.isDebugEnabled()) {
this.logger.debug(wk.toString());
}
}
public WebContinuation getWebContinuation() {
return wk;
}
private static Object unwrap(Object obj) {
if (obj instanceof Wrapper) {
obj = ((Wrapper)obj).unwrap();
} else if (obj == Undefined.instance) {
obj = null;
}
return obj;
}
PageLocalScopeImpl getPageLocal() {
UserObject userObj = (UserObject)wk.getUserObject();
if (userObj == null) return null;
return userObj.pageLocal;
}
void setPageLocal(PageLocalScopeImpl pageLocal) {
UserObject userObj = (UserObject)wk.getUserObject();
if (userObj == null) {
userObj = new UserObject();
wk.setUserObject(userObj);
}
userObj.pageLocal = pageLocal;
}
public void jsFunction_setBookmark(boolean value) {
UserObject userObj = (UserObject)wk.getUserObject();
if (userObj == null) {
userObj = new UserObject();
wk.setUserObject(userObj);
}
userObj.isBookmark = value;
}
public boolean jsGet_bookmark() {
return isBookmark(wk);
}
public boolean jsFunction_isBookmark() {
return isBookmark(wk);
}
public FOM_WebContinuation jsGet_previousBookmark() {
WebContinuation c = wk.getParentContinuation();
if (c == null) {
return null;
}
// If this is a continuation of sendPageAndWait()
// and the immediate parent is a bookmark, then
// it is the bookmark for this page, so skip it.
if (!isBookmark(wk) && isBookmark(c)) {
c = c.getParentContinuation();
}
while (c != null && !isBookmark(c)) {
c = c.getParentContinuation();
}
if (c == null) {
return null;
}
FOM_WebContinuation pwk = new FOM_WebContinuation(c);
pwk.enableLogging(logger);
pwk.setParentScope(getParentScope());
pwk.setPrototype(getClassPrototype(getParentScope(), pwk.getClassName()));
return pwk;
}
/**
* Return text representation of the WebContinuation.
*/
public String toString() {
return "WC" + wk.getId();
}
}