337 lines
11 KiB
C++
337 lines
11 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#include "nsIDOMHTMLAppletElement.h"
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#include "nsIScriptObjectOwner.h"
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#include "nsIDOMEventReceiver.h"
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#include "nsIHTMLContent.h"
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#include "nsGenericHTMLElement.h"
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#include "nsHTMLAtoms.h"
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#include "nsHTMLIIDs.h"
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#include "nsIStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIPresContext.h"
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#include "nsIDocument.h"
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#include "nsIPresShell.h"
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#include "nsIFrame.h"
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#if defined(OJI)
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#include "nsIServiceManager.h"
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#include "nsIJVMManager.h"
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#include "nsILiveConnectManager.h"
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#include "nsIPluginInstance.h"
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#include "nsIJVMPluginInstance.h"
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#endif
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// XXX this is to get around conflicts with windows.h defines
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// introduced through jni.h
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#ifdef XP_PC
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#undef GetClassName
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#undef GetObject
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#endif
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static NS_DEFINE_IID(kIDOMHTMLAppletElementIID, NS_IDOMHTMLAPPLETELEMENT_IID);
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class nsHTMLAppletElement : public nsIDOMHTMLAppletElement,
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public nsIScriptObjectOwner,
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public nsIDOMEventReceiver,
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public nsIHTMLContent
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{
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public:
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nsHTMLAppletElement(nsIAtom* aTag);
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virtual ~nsHTMLAppletElement();
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsIDOMNode
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NS_IMPL_IDOMNODE_USING_GENERIC(mInner)
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// nsIDOMElement
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NS_IMPL_IDOMELEMENT_USING_GENERIC(mInner)
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// nsIDOMHTMLElement
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NS_IMPL_IDOMHTMLELEMENT_USING_GENERIC(mInner)
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// nsIDOMHTMLAppletElement
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NS_IMETHOD GetAlign(nsString& aAlign);
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NS_IMETHOD SetAlign(const nsString& aAlign);
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NS_IMETHOD GetAlt(nsString& aAlt);
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NS_IMETHOD SetAlt(const nsString& aAlt);
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NS_IMETHOD GetArchive(nsString& aArchive);
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NS_IMETHOD SetArchive(const nsString& aArchive);
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NS_IMETHOD GetCode(nsString& aCode);
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NS_IMETHOD SetCode(const nsString& aCode);
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NS_IMETHOD GetCodeBase(nsString& aCodeBase);
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NS_IMETHOD SetCodeBase(const nsString& aCodeBase);
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NS_IMETHOD GetHeight(nsString& aHeight);
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NS_IMETHOD SetHeight(const nsString& aHeight);
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NS_IMETHOD GetHspace(nsString& aHspace);
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NS_IMETHOD SetHspace(const nsString& aHspace);
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NS_IMETHOD GetName(nsString& aName);
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NS_IMETHOD SetName(const nsString& aName);
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NS_IMETHOD GetObject(nsString& aObject);
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NS_IMETHOD SetObject(const nsString& aObject);
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NS_IMETHOD GetVspace(nsString& aVspace);
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NS_IMETHOD SetVspace(const nsString& aVspace);
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NS_IMETHOD GetWidth(nsString& aWidth);
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NS_IMETHOD SetWidth(const nsString& aWidth);
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// nsIScriptObjectOwner
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NS_IMETHOD GetScriptObject(nsIScriptContext* aContext,
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void** aScriptObject);
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NS_IMETHOD SetScriptObject(void *aScriptObject);
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// nsIDOMEventReceiver
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NS_IMPL_IDOMEVENTRECEIVER_USING_GENERIC(mInner)
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// nsIContent
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NS_IMPL_ICONTENT_USING_GENERIC(mInner)
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// nsIHTMLContent
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NS_IMPL_IHTMLCONTENT_USING_GENERIC(mInner)
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protected:
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nsGenericHTMLContainerElement mInner;
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PRBool mReflectedApplet;
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};
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nsresult
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NS_NewHTMLAppletElement(nsIHTMLContent** aInstancePtrResult, nsIAtom* aTag)
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{
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null ptr");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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nsIHTMLContent* it = new nsHTMLAppletElement(aTag);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return it->QueryInterface(kIHTMLContentIID, (void**) aInstancePtrResult);
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}
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nsHTMLAppletElement::nsHTMLAppletElement(nsIAtom* aTag)
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{
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NS_INIT_REFCNT();
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mInner.Init(this, aTag);
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mReflectedApplet = PR_FALSE;
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}
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nsHTMLAppletElement::~nsHTMLAppletElement()
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{
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}
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NS_IMPL_ADDREF(nsHTMLAppletElement)
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NS_IMPL_RELEASE(nsHTMLAppletElement)
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nsresult
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nsHTMLAppletElement::QueryInterface(REFNSIID aIID, void** aInstancePtr)
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{
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NS_IMPL_HTML_CONTENT_QUERY_INTERFACE(aIID, aInstancePtr, this)
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if (aIID.Equals(kIDOMHTMLAppletElementIID)) {
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nsIDOMHTMLAppletElement* tmp = this;
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*aInstancePtr = (void*) tmp;
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mRefCnt++;
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return NS_OK;
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}
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return NS_NOINTERFACE;
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}
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nsresult
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nsHTMLAppletElement::CloneNode(PRBool aDeep, nsIDOMNode** aReturn)
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{
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nsHTMLAppletElement* it = new nsHTMLAppletElement(mInner.mTag);
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if (nsnull == it) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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mInner.CopyInnerTo(this, &it->mInner, aDeep);
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return it->QueryInterface(kIDOMNodeIID, (void**) aReturn);
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}
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Align, align)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Alt, alt)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Archive, archive)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Code, code)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, CodeBase, codebase)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Height, height)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Hspace, hspace)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Name, name)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Object, object)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Vspace, vspace)
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NS_IMPL_STRING_ATTR(nsHTMLAppletElement, Width, width)
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NS_IMETHODIMP
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nsHTMLAppletElement::StringToAttribute(nsIAtom* aAttribute,
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const nsString& aValue,
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nsHTMLValue& aResult)
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{
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if (aAttribute == nsHTMLAtoms::align) {
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if (nsGenericHTMLElement::ParseAlignValue(aValue, aResult)) {
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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else if (nsGenericHTMLElement::ParseImageAttribute(aAttribute,
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aValue, aResult)) {
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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return NS_CONTENT_ATTR_NOT_THERE;
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}
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NS_IMETHODIMP
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nsHTMLAppletElement::AttributeToString(nsIAtom* aAttribute,
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const nsHTMLValue& aValue,
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nsString& aResult) const
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{
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if (aAttribute == nsHTMLAtoms::align) {
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if (eHTMLUnit_Enumerated == aValue.GetUnit()) {
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nsGenericHTMLElement::AlignValueToString(aValue, aResult);
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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}
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else if (nsGenericHTMLElement::ImageAttributeToString(aAttribute,
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aValue, aResult)) {
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return NS_CONTENT_ATTR_HAS_VALUE;
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}
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return mInner.AttributeToString(aAttribute, aValue, aResult);
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}
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static void
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MapAttributesInto(nsIHTMLAttributes* aAttributes,
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nsIStyleContext* aContext,
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nsIPresContext* aPresContext)
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{
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nsGenericHTMLElement::MapImageAlignAttributeInto(aAttributes, aContext, aPresContext);
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nsGenericHTMLElement::MapImageAttributesInto(aAttributes, aContext, aPresContext);
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nsGenericHTMLElement::MapImageBorderAttributesInto(aAttributes, aContext, aPresContext, nsnull);
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nsGenericHTMLElement::MapCommonAttributesInto(aAttributes, aContext, aPresContext);
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}
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NS_IMETHODIMP
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nsHTMLAppletElement::GetAttributeMappingFunctions(nsMapAttributesFunc& aFontMapFunc,
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nsMapAttributesFunc& aMapFunc) const
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{
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aFontMapFunc = nsnull;
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aMapFunc = &MapAttributesInto;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsHTMLAppletElement::HandleDOMEvent(nsIPresContext& aPresContext,
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nsEvent* aEvent,
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nsIDOMEvent** aDOMEvent,
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PRUint32 aFlags,
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nsEventStatus& aEventStatus)
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{
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return mInner.HandleDOMEvent(aPresContext, aEvent, aDOMEvent,
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aFlags, aEventStatus);
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}
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NS_IMETHODIMP
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nsHTMLAppletElement::GetStyleHintForAttributeChange(
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const nsIAtom* aAttribute,
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PRInt32 *aHint) const
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{
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nsGenericHTMLElement::GetStyleHintForCommonAttributes(this, aAttribute, aHint);
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return NS_OK;
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}
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#if defined(OJI)
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extern nsresult NS_GetObjectFramePluginInstance(nsIFrame* aFrame, nsIPluginInstance*& aPluginInstance);
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#endif
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/**
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* For backwards compatibility an applet element's JavaScript object should expose both the public
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* fields of the applet, and the attributes of the applet tag. The call to nsGenericElement::GetScriptObject
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* takes case of the tag attributes. Here we generate a JavaScript reference to the applet object itself,
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* and set its __proto__ property to the tag object. That way, if the Java applet has public fields that
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* shadow the tag attributes, the applet's fields take precedence.
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*/
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NS_IMETHODIMP
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nsHTMLAppletElement::GetScriptObject(nsIScriptContext* aContext,
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void** aScriptObject)
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{
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#if defined(OJI)
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nsresult rv = NS_OK;
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if (!mReflectedApplet) {
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// 1. get the script object corresponding to the <APPLET> element itself.
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JSObject* elementObject = nsnull;
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rv = mInner.GetScriptObject(aContext, (void**)&elementObject);
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if (NS_OK != rv)
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return rv;
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// 2. get the plugin instance corresponding to this element.
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nsIPresShell* shell = mInner.mDocument->GetShellAt(0);
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if (nsnull == shell)
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return NS_ERROR_FAILURE;
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nsIFrame* frame = nsnull;
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shell->GetPrimaryFrameFor(mInner.mContent, &frame);
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NS_RELEASE(shell);
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// 3. get the Java object corresponding to this applet, and reflect it into
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// JavaScript using the LiveConnect manager.
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JSContext* context = (JSContext*)aContext->GetNativeContext();
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JSObject* wrappedAppletObject = nsnull;
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nsIPluginInstance* pluginInstance = nsnull;
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rv = NS_GetObjectFramePluginInstance(frame, pluginInstance);
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if (nsnull != pluginInstance) {
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nsIJVMPluginInstance* javaPluginInstance = nsnull;
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if (pluginInstance->QueryInterface(nsIJVMPluginInstance::GetIID(), (void**)&javaPluginInstance) == NS_OK) {
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jobject appletObject = nsnull;
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rv = javaPluginInstance->GetJavaObject(&appletObject);
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if (NS_OK == rv) {
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nsILiveConnectManager* manager = NULL;
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rv = nsServiceManager::GetService(nsIJVMManager::GetCID(),
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nsILiveConnectManager::GetIID(),
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(nsISupports **)&manager);
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if (rv == NS_OK) {
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rv = manager->WrapJavaObject(context, appletObject, &wrappedAppletObject);
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nsServiceManager::ReleaseService(nsIJVMManager::GetCID(), manager);
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}
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}
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NS_RELEASE(javaPluginInstance);
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}
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NS_RELEASE(pluginInstance);
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}
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// 4. set the __proto__ field of the applet object to be the element script object.
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if (nsnull != wrappedAppletObject) {
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JS_SetPrototype(context, wrappedAppletObject, elementObject);
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mInner.SetScriptObject(wrappedAppletObject);
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mReflectedApplet = PR_TRUE;
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}
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*aScriptObject = wrappedAppletObject;
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} else {
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rv = mInner.GetScriptObject(aContext, aScriptObject);
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}
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return rv;
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#else
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return mInner.GetScriptObject(aContext, aScriptObject);
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#endif
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}
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// TODO: if this method ever gets called, it will destroy the prototype type chain.
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NS_IMETHODIMP
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nsHTMLAppletElement::SetScriptObject(void *aScriptObject)
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{
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return mInner.SetScriptObject(aScriptObject);
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}
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