/*
* Copyright (c) 2002-2010 Gargoyle Software Inc.
*
* Licensed 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 com.gargoylesoftware.htmlunit.javascript.host;
import java.lang.reflect.Method;
import net.sourceforge.htmlunit.corejs.javascript.Context;
import net.sourceforge.htmlunit.corejs.javascript.Function;
import net.sourceforge.htmlunit.corejs.javascript.Scriptable;
import com.gargoylesoftware.htmlunit.javascript.SimpleScriptable;
/**
* An implementation of native ActiveX components using <a href="http://jacob-project.wiki.sourceforge.net/">Jacob</a>.
*
* @version $Revision: 5301 $
* @author Ahmed Ashour
*/
public class ActiveXObjectImpl extends SimpleScriptable {
private static final long serialVersionUID = 6954481782205807262L;
private static final Class< ? > activeXComponentClass_;
/** ActiveXComponent.getProperty(String) */
private static final Method METHOD_getProperty_;
private final Object object_;
/** Dispatch.callN(Dispatch, String, Object[]) */
private static final Method METHOD_callN_;
/** Variant.getvt() */
private static final Method METHOD_getvt_;
/** Variant.getDispatch() */
private static final Method METHOD_getDispatch_;
static {
try {
activeXComponentClass_ = Class.forName("com.jacob.activeX.ActiveXComponent");
METHOD_getProperty_ = activeXComponentClass_.getMethod("getProperty", String.class);
final Class< ? > dispatchClass = Class.forName("com.jacob.com.Dispatch");
METHOD_callN_ = dispatchClass.getMethod("callN", dispatchClass, String.class, Object[].class);
final Class< ? > variantClass = Class.forName("com.jacob.com.Variant");
METHOD_getvt_ = variantClass.getMethod("getvt");
METHOD_getDispatch_ = variantClass.getMethod("getDispatch");
}
catch (final Exception e) {
throw new RuntimeException(e);
}
}
/**
* Constructs a new instance.
*
* @param activeXName ActiveX object name
* @throws Exception if failed to initiate Jacob
*/
public ActiveXObjectImpl(final String activeXName) throws Exception {
this(activeXComponentClass_.getConstructor(String.class).newInstance(activeXName));
}
private ActiveXObjectImpl(final Object object) {
object_ = object;
}
/**
* {@inheritDoc}
*/
@Override
public Object get(final String name, final Scriptable start) {
try {
final Object variant = METHOD_getProperty_.invoke(object_, name);
return wrapIfNecessary(variant);
}
catch (final Exception e) {
return new Function() {
public Object call(final Context arg0, final Scriptable arg1, final Scriptable arg2,
final Object[] arg3) {
try {
final Object rv = METHOD_callN_.invoke(null, object_, name, arg3);
return wrapIfNecessary(rv);
}
catch (final Exception e) {
throw Context.throwAsScriptRuntimeEx(e);
}
}
public Scriptable construct(final Context arg0, final Scriptable arg1, final Object[] arg2) {
throw new UnsupportedOperationException();
}
public void delete(final String arg0) {
throw new UnsupportedOperationException();
}
public void delete(final int arg0) {
throw new UnsupportedOperationException();
}
public Object get(final String arg0, final Scriptable arg1) {
throw new UnsupportedOperationException();
}
public Object get(final int arg0, final Scriptable arg1) {
throw new UnsupportedOperationException();
}
public String getClassName() {
throw new UnsupportedOperationException();
}
public Object getDefaultValue(final Class< ? > arg0) {
throw new UnsupportedOperationException();
}
public Object[] getIds() {
throw new UnsupportedOperationException();
}
public Scriptable getParentScope() {
throw new UnsupportedOperationException();
}
public Scriptable getPrototype() {
throw new UnsupportedOperationException();
}
public boolean has(final String arg0, final Scriptable arg1) {
throw new UnsupportedOperationException();
}
public boolean has(final int arg0, final Scriptable arg1) {
throw new UnsupportedOperationException();
}
public boolean hasInstance(final Scriptable arg0) {
throw new UnsupportedOperationException();
}
public void put(final String arg0, final Scriptable arg1, final Object arg2) {
throw new UnsupportedOperationException();
}
public void put(final int arg0, final Scriptable arg1, final Object arg2) {
throw new UnsupportedOperationException();
}
public void setParentScope(final Scriptable arg0) {
throw new UnsupportedOperationException();
}
public void setPrototype(final Scriptable arg0) {
throw new UnsupportedOperationException();
}
};
}
}
/**
* Wrap the specified variable into {@link ActiveXObjectImpl} if its type is Variant.VariantDispatch.
* @param variant the variant to potentially wrap
* @return either the variant if it is basic type or wrapped {@link ActiveXObjectImpl}
*/
private Object wrapIfNecessary(final Object variant) throws Exception {
if (((Short) METHOD_getvt_.invoke(variant)) == 9) { //Variant.VariantDispatch
return new ActiveXObjectImpl(METHOD_getDispatch_.invoke(variant));
}
return variant;
}
/**
* {@inheritDoc}
*/
@Override
public void put(final String name, final Scriptable start, final Object value) {
try {
final Method setMethod = activeXComponentClass_.getMethod("setProperty", String.class, value.getClass());
setMethod.invoke(object_, name, value);
}
catch (final Exception e) {
throw Context.throwAsScriptRuntimeEx(e);
}
}
}