new implementation of GetScriptObject, returns a script object that is a wrapper for the Java applet object, whose prototype points to the standard DOM element object. This allows the applet's public fields to shadow the DOM properties. only turned on for XP_MAC.
git-svn-id: svn://10.0.0.236/trunk@24630 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
beard%netscape.com
parent
fcb16f7e0a
commit
740c8bf189
@ -26,6 +26,17 @@
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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) && defined(XP_MAC)
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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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static NS_DEFINE_IID(kIDOMHTMLAppletElementIID, NS_IDOMHTMLAPPLETELEMENT_IID);
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@ -75,7 +86,9 @@ public:
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NS_IMETHOD SetWidth(const nsString& aWidth);
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// nsIScriptObjectOwner
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NS_IMPL_ISCRIPTOBJECTOWNER_USING_GENERIC(mInner)
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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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@ -88,6 +101,7 @@ public:
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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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@ -108,6 +122,7 @@ 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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@ -228,3 +243,82 @@ nsHTMLAppletElement::GetStyleHintForAttributeChange(
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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) && defined(XP_MAC)
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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) && defined(XP_MAC)
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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, &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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nsIFrame* frame = nsnull;
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shell->GetPrimaryFrameFor(mInner.mContent, &frame);
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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(), &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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@ -26,6 +26,17 @@
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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) && defined(XP_MAC)
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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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static NS_DEFINE_IID(kIDOMHTMLAppletElementIID, NS_IDOMHTMLAPPLETELEMENT_IID);
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@ -75,7 +86,9 @@ public:
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NS_IMETHOD SetWidth(const nsString& aWidth);
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// nsIScriptObjectOwner
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NS_IMPL_ISCRIPTOBJECTOWNER_USING_GENERIC(mInner)
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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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@ -88,6 +101,7 @@ public:
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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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@ -108,6 +122,7 @@ 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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@ -228,3 +243,82 @@ nsHTMLAppletElement::GetStyleHintForAttributeChange(
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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) && defined(XP_MAC)
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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) && defined(XP_MAC)
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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, &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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nsIFrame* frame = nsnull;
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shell->GetPrimaryFrameFor(mInner.mContent, &frame);
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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(), &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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