gecko-dev/java/dom/nsJavaDOMImpl.cpp
1999-09-14 21:25:47 +00:00

666 lines
17 KiB
C++
Executable File

/*
The contents of this file are subject to the Mozilla Public License
Version 1.0 (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.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
the License for the specific language governing rights and limitations
under the License.
The Initial Developer of the Original Code is Sun Microsystems,
Inc. Portions created by Sun are Copyright (C) 1999 Sun Microsystems,
Inc. All Rights Reserved.
*/
#include "prenv.h"
#include "nsISupportsUtils.h"
#include "nsIURL.h"
#include "nsIContentViewerContainer.h"
#include "nsIDocument.h"
#include "nsIDocumentLoader.h"
#include "nsIDocumentLoaderObserver.h"
#include "nsIDocumentViewer.h"
#include "nsIDOMDocument.h"
#include "nsJavaDOMImpl.h"
#if defined(DEBUG)
#include <stdio.h>
#include "nsIDOMElement.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMNamedNodeMap.h"
static void dump_document(nsIDOMDocument* dom, const char* urlSpec);
static void dump_node(FILE* of, nsIDOMNode* node, int indent,
PRBool isMapNode);
static void dump_map(FILE* of, nsIDOMNamedNodeMap* map, int indent);
static char* strip_whitespace(const PRUnichar* input, int length);
static const char* describe_type(int type);
#endif
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIJavaDOMIID, NS_IJAVADOM_IID);
static NS_DEFINE_IID(kIDocumentViewerIID, NS_IDOCUMENT_VIEWER_IID);
static NS_DEFINE_IID(kIDOMDocumentIID, NS_IDOMDOCUMENT_IID);
static NS_DEFINE_IID(kIDocumentLoaderObserverIID, NS_IDOCUMENT_LOADER_OBSERVER_IID);
NS_IMPL_ADDREF(nsJavaDOMImpl);
NS_IMPL_RELEASE(nsJavaDOMImpl);
NS_IMETHODIMP nsJavaDOMImpl::QueryInterface(REFNSIID aIID, void** aInstance)
{
if (NULL == aInstance)
return NS_ERROR_NULL_POINTER;
*aInstance = NULL;
if (aIID.Equals(kIJavaDOMIID)) {
*aInstance = (void*) ((nsIJavaDOM*)this);
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kIDocumentLoaderObserverIID)) {
*aInstance = (void*) ((nsIDocumentLoaderObserver*)this);
NS_ADDREF_THIS();
return NS_OK;
}
if (aIID.Equals(kISupportsIID)) {
*aInstance = (void*) ((nsISupports*)this);
NS_ADDREF_THIS();
return NS_OK;
}
return NS_NOINTERFACE;
}
JavaVM* nsJavaDOMImpl::jvm = NULL;
JNIEnv* nsJavaDOMImpl::env = NULL;
jclass nsJavaDOMImpl::factoryClass = NULL;
jclass nsJavaDOMImpl::documentClass = NULL;
jclass nsJavaDOMImpl::listenerClass = NULL;
jclass nsJavaDOMImpl::gcClass = NULL;
jobject nsJavaDOMImpl::factory = NULL;
jobject nsJavaDOMImpl::docListener = NULL;
jfieldID nsJavaDOMImpl::documentPtrFID = NULL;
jmethodID nsJavaDOMImpl::getListenerMID = NULL;
jmethodID nsJavaDOMImpl::startURLLoadMID = NULL;
jmethodID nsJavaDOMImpl::endURLLoadMID = NULL;
jmethodID nsJavaDOMImpl::progressURLLoadMID = NULL;
jmethodID nsJavaDOMImpl::statusURLLoadMID = NULL;
jmethodID nsJavaDOMImpl::startDocumentLoadMID = NULL;
jmethodID nsJavaDOMImpl::endDocumentLoadMID = NULL;
jmethodID nsJavaDOMImpl::gcMID = NULL;
nsJavaDOMImpl::nsJavaDOMImpl()
{
NS_INIT_ISUPPORTS();
if (jvm)
return;
JDK1_1InitArgs vm_args;
JNI_GetDefaultJavaVMInitArgs(&vm_args);
vm_args.version = 0x00010001;
vm_args.verifyMode = JNI_TRUE;
#ifdef DEBUG
vm_args.verbose = JNI_TRUE;
vm_args.enableVerboseGC = JNI_TRUE;
#endif // DEBUG
char* cp = PR_GetEnv("CLASSPATH");
char* p = new char[strlen(cp) + strlen(vm_args.classpath) + 2];
strcpy(p, vm_args.classpath);
if (cp) {
#ifdef XP_PC
strcat(p, ";");
#else
strcat(p, ":");
#endif
strcat(p, cp);
vm_args.classpath = p;
}
#ifdef DEBUG
printf("classpath is \"%s\"\n", vm_args.classpath);
#endif // DEBUG
JNI_CreateJavaVM(&jvm, &env, &vm_args);
delete[] p;
gcClass = env->FindClass("org/mozilla/dom/DOMGarbageCollector");
if (!gcClass) return;
gcClass = (jclass) env->NewGlobalRef(gcClass);
if (!gcClass) return;
gcMID =
env->GetStaticMethodID(gcClass,
"doGC",
"()V");
if (!gcMID) return;
factoryClass = env->FindClass("org/mozilla/dom/DOMFactory");
if (!factoryClass) return;
factoryClass = (jclass) env->NewGlobalRef(factoryClass);
if (!factoryClass) return;
factory = env->AllocObject(factoryClass);
if (!factory) return;
factory = (jclass) env->NewGlobalRef(factory);
if (!factory) return;
getListenerMID =
env->GetMethodID(factoryClass,
"getDocumentLoadListener",
"()Lorg/mozilla/dom/DocumentLoadListener;");
if (!getListenerMID) return;
docListener =
env->CallObjectMethod(factory, getListenerMID);
if (!docListener) return;
docListener = (jclass) env->NewGlobalRef(docListener);
if (!docListener) return;
listenerClass =
env->GetObjectClass(docListener);
if (!listenerClass) return;
listenerClass = (jclass) env->NewGlobalRef(listenerClass);
if (!listenerClass) return;
documentClass =
env->FindClass("org/mozilla/dom/DocumentImpl");
if (!documentClass) return;
documentClass = (jclass) env->NewGlobalRef(documentClass);
if (!documentClass) return;
documentPtrFID =
env->GetFieldID(documentClass,
"p_nsIDOMNode",
"J");
if (!documentPtrFID) return;
startURLLoadMID =
env->GetMethodID(listenerClass,
"startURLLoad",
"(Ljava/lang/String;Ljava/lang/String;Lorg/w3c/dom/Document;)V");
if (!startURLLoadMID) return;
endURLLoadMID =
env->GetMethodID(listenerClass,
"endURLLoad",
"(Ljava/lang/String;ILorg/w3c/dom/Document;)V");
if (!endURLLoadMID) return;
progressURLLoadMID =
env->GetMethodID(listenerClass,
"progressURLLoad",
"(Ljava/lang/String;IILorg/w3c/dom/Document;)V");
if (!progressURLLoadMID) return;
statusURLLoadMID =
env->GetMethodID(listenerClass,
"statusURLLoad",
"(Ljava/lang/String;Ljava/lang/String;Lorg/w3c/dom/Document;)V");
if (!statusURLLoadMID) return;
startDocumentLoadMID =
env->GetMethodID(listenerClass,
"startDocumentLoad",
"(Ljava/lang/String;)V");
if (!startDocumentLoadMID) return;
endDocumentLoadMID =
env->GetMethodID(listenerClass,
"endDocumentLoad",
"(Ljava/lang/String;ILorg/w3c/dom/Document;)V");
if (!endDocumentLoadMID) return;
Cleanup();
}
nsJavaDOMImpl::~nsJavaDOMImpl()
{
}
PRBool nsJavaDOMImpl::Cleanup()
{
if (env->ExceptionOccurred()) {
env->ExceptionDescribe();
return PR_TRUE;
}
return PR_FALSE;
}
nsIDOMDocument* nsJavaDOMImpl::GetDocument(nsIDocumentLoader* loader)
{
nsIContentViewerContainer* container = nsnull;
nsIContentViewer* contentv = nsnull;
nsIDocumentViewer* docv = nsnull;
nsIDocument* document = nsnull;
nsIDOMDocument* domDoc = nsnull;
nsresult rv = loader->GetContainer(&container);
if (NS_SUCCEEDED(rv) && container)
rv = container->GetContentViewer(&contentv);
if (NS_SUCCEEDED(rv) && contentv) {
rv = contentv->QueryInterface(kIDocumentViewerIID,
(void**) &docv);
if (NS_SUCCEEDED(rv) && docv) {
docv->GetDocument(document);
rv = document->QueryInterface(kIDOMDocumentIID,
(void**) &domDoc);
if (NS_SUCCEEDED(rv) && docv) {
return domDoc;
}
}
}
fprintf(stderr,
"nsJavaDOMImpl::GetDocument: failed: "
"container=%x, contentViewer=%x, documentViewer=%x, document=%x, "
"domDocument=%x, error=%x\n",
(unsigned) (void*) container, (unsigned) (void*) contentv,
(unsigned) (void*) docv, (unsigned) (void*) document,
(unsigned) (void*) domDoc, rv);
return NULL;
}
// convert nsIDOMDocument to org.mozilla.dom.DocumentImpl
jobject nsJavaDOMImpl::CaffienateDOMDocument(nsIDOMDocument* domDoc)
{
if (!domDoc) return NULL;
jobject jdoc = env->AllocObject(documentClass);
if (!jdoc) return NULL;
env->SetLongField(jdoc, documentPtrFID, (jlong) (void*) domDoc);
if (Cleanup() == PR_TRUE) return NULL;
return jdoc;
}
/* nsIDocumentLoaderObserver methods */
NS_IMETHODIMP nsJavaDOMImpl::OnStartDocumentLoad(nsIDocumentLoader* loader,
nsIURI* aURL,
const char* aCommand)
{
char* urlSpec = "";
if (aURL)
aURL->GetSpec(&urlSpec);
jstring jURL = env->NewStringUTF(urlSpec);
if (!jURL) return NS_ERROR_FAILURE;
env->CallVoidMethod(docListener,
startDocumentLoadMID,
jURL);
if (Cleanup() == PR_TRUE) return NS_ERROR_FAILURE;
env->CallStaticVoidMethod(gcClass, gcMID);
Cleanup();
return NS_OK;
}
NS_IMETHODIMP nsJavaDOMImpl::OnEndDocumentLoad(nsIDocumentLoader* loader,
#ifdef NECKO
nsIChannel* channel,
nsresult aStatus,
#else
nsIURI* aURL,
PRInt32 aStatus,
#endif
nsIDocumentLoaderObserver* aObserver)
{
char* urlSpec = "";
#ifdef NECKO
nsIURI* url = nsnull;
if (channel && NS_SUCCEEDED(channel->GetURI(&url)))
url->GetSpec(&urlSpec);
#else
if (aURL)
aURL->GetSpec(&urlSpec);
#endif
jstring jURL = env->NewStringUTF(urlSpec);
if (!jURL) return NS_ERROR_FAILURE;
nsIDOMDocument* domDoc = GetDocument(loader);
jobject jdoc = CaffienateDOMDocument(domDoc);
env->CallVoidMethod(docListener,
endDocumentLoadMID,
jURL,
(jint) aStatus,
jdoc);
if (Cleanup() == PR_TRUE) return NS_ERROR_FAILURE;
env->CallStaticVoidMethod(gcClass, gcMID);
Cleanup();
return NS_OK;
}
NS_IMETHODIMP nsJavaDOMImpl::OnStartURLLoad(nsIDocumentLoader* loader,
#ifdef NECKO
nsIChannel* channel,
#else
nsIURI* aURL,
const char* aContentType,
#endif
nsIContentViewer* aViewer)
{
char* urlSpec = "";
#ifdef NECKO
nsIURI* url = nsnull;
if (channel && NS_SUCCEEDED(channel->GetURI(&url)))
url->GetSpec(&urlSpec);
#else
if (aURL)
aURL->GetSpec(&urlSpec);
#endif
jstring jURL = env->NewStringUTF(urlSpec);
if (!jURL) return NS_ERROR_FAILURE;
char* contentType = "";
#ifdef NECKO
if (channel)
channel->GetContentType(&contentType);
#else
if (aContentType)
contentType = aContentType;
#endif
jstring jContentType = env->NewStringUTF(contentType);
if (!jContentType) return NS_ERROR_FAILURE;
nsIDOMDocument* domDoc = GetDocument(loader);
jobject jdoc = CaffienateDOMDocument(domDoc);
env->CallVoidMethod(docListener,
startURLLoadMID,
jURL,
jContentType,
jdoc);
if (Cleanup() == PR_TRUE) return NS_ERROR_FAILURE;
env->CallStaticVoidMethod(gcClass, gcMID);
Cleanup();
return NS_OK;
}
NS_IMETHODIMP nsJavaDOMImpl::OnProgressURLLoad(nsIDocumentLoader* loader,
#ifdef NECKO
nsIChannel* channel,
#else
nsIURI* aURL,
#endif
PRUint32 aProgress,
PRUint32 aProgressMax)
{
char* urlSpec = "";
#ifdef NECKO
nsIURI* url = nsnull;
if (channel && NS_SUCCEEDED(channel->GetURI(&url)))
url->GetSpec(&urlSpec);
#else
if (aURL)
aURL->GetSpec(&urlSpec);
#endif
jstring jURL = env->NewStringUTF(urlSpec);
if (!jURL) return NS_ERROR_FAILURE;
nsIDOMDocument* domDoc = GetDocument(loader);
jobject jdoc = CaffienateDOMDocument(domDoc);
env->CallVoidMethod(docListener,
progressURLLoadMID,
jURL,
(jint) aProgress,
(jint) aProgressMax,
jdoc);
if (Cleanup() == PR_TRUE) return NS_ERROR_FAILURE;
env->CallStaticVoidMethod(gcClass, gcMID);
Cleanup();
return NS_OK;
}
NS_IMETHODIMP nsJavaDOMImpl::OnStatusURLLoad(nsIDocumentLoader* loader,
#ifdef NECKO
nsIChannel* channel,
#else
nsIURI* aURL,
#endif
nsString& aMsg)
{
char* urlSpec = "";
#ifdef NECKO
nsIURI* url = nsnull;
if (channel && NS_SUCCEEDED(channel->GetURI(&url)))
url->GetSpec(&urlSpec);
#else
if (aURL)
aURL->GetSpec(&urlSpec);
#endif
jstring jURL = env->NewStringUTF(urlSpec);
if (!jURL) return NS_ERROR_FAILURE;
const PRUnichar* cMsg = aMsg.GetUnicode();
jstring jMessage = env->NewString(cMsg, aMsg.Length());
if (!jMessage) return NS_ERROR_FAILURE;
nsIDOMDocument* domDoc = GetDocument(loader);
jobject jdoc = CaffienateDOMDocument(domDoc);
env->CallVoidMethod(docListener,
statusURLLoadMID,
jURL,
jMessage,
jdoc);
if (Cleanup() == PR_TRUE) return NS_ERROR_FAILURE;
env->CallStaticVoidMethod(gcClass, gcMID);
Cleanup();
return NS_OK;
}
NS_IMETHODIMP nsJavaDOMImpl::OnEndURLLoad(nsIDocumentLoader* loader,
#ifdef NECKO
nsIChannel* channel,
nsresult aStatus)
#else
nsIURI* aURL,
PRInt32 aStatus)
#endif
{
char* urlSpec = "";
#ifdef NECKO
nsIURI* url = nsnull;
if (channel && NS_SUCCEEDED(channel->GetURI(&url)))
url->GetSpec(&urlSpec);
#else
if (aURL)
aURL->GetSpec(&urlSpec);
#endif
jstring jURL = env->NewStringUTF(urlSpec);
if (!jURL) return NS_ERROR_FAILURE;
nsIDOMDocument* domDoc = GetDocument(loader);
jobject jdoc = CaffienateDOMDocument(domDoc);
#if defined(DEBUG)
dump_document(domDoc, urlSpec);
#endif
env->CallVoidMethod(docListener,
endURLLoadMID,
jURL,
(jint) aStatus,
jdoc);
if (Cleanup() == PR_TRUE) return NS_ERROR_FAILURE;
env->CallStaticVoidMethod(gcClass, gcMID);
Cleanup();
return NS_OK;
}
NS_IMETHODIMP nsJavaDOMImpl::HandleUnknownContentType(nsIDocumentLoader* loader,
#ifdef NECKO
nsIChannel* channel,
#else
nsIURI* aURL,
#endif
const char *aContentType,
const char *aCommand)
{
env->CallStaticVoidMethod(gcClass, gcMID);
Cleanup();
return NS_OK;
}
#if defined(DEBUG)
static void dump_document(nsIDOMDocument* domDoc, const char* urlSpec)
{
if (!domDoc) return;
if (strstr(urlSpec, ".xul") ||
strstr(urlSpec, ".js") ||
strstr(urlSpec, ".css") ||
strstr(urlSpec, "file:")) return;
FILE* of = fopen("dom-cpp.txt", "a");
if (!of) {
perror("nsJavaDOMImpl::dump_document: failed to open output file\n");
return;
}
nsIDOMElement* element = nsnull;
nsresult rv = domDoc->GetDocumentElement(&element);
if (NS_FAILED(rv) || !element)
return;
(void) element->Normalize();
fprintf(of, "\n+++ %s +++\n", urlSpec);
dump_node(of, (nsIDOMNode*) element, 0, PR_FALSE);
fprintf(of, "\n");
fflush(of);
fclose(of);
}
static void dump_node(FILE* of, nsIDOMNode* node, int indent,
PRBool isMapNode)
{
if (!node) return;
fprintf(of, "\n");
for (int i=0; i < indent; i++)
fprintf(of, " ");
nsString name;
nsString value;
PRUint16 type;
node->GetNodeName(name);
node->GetNodeValue(value);
node->GetNodeType(&type);
const PRUnichar* cname = name.GetUnicode();
const PRUnichar* cvalue = value.GetUnicode();
char* cnorm = strip_whitespace(cvalue, value.Length());
fprintf(of, "name=\"%s\" type=%s value=\"%s\"",
cname, describe_type(type), cnorm);
delete[] cnorm;
if (isMapNode) return;
nsIDOMNamedNodeMap* map = nsnull;
node->GetAttributes(&map);
dump_map(of, map, indent);
nsIDOMNodeList* children = nsnull;
node->GetChildNodes(&children);
if (!children) return;
PRUint32 length=0;
children->GetLength(&length);
for (PRUint32 j=0; j < length; j++) {
nsIDOMNode* child = nsnull;
children->Item(j, &child);
dump_node(of, child, indent+2, PR_FALSE);
}
}
static void dump_map(FILE* of, nsIDOMNamedNodeMap* map, int indent)
{
if (!map) return;
fprintf(of, "\n");
PRUint32 length=0;
map->GetLength(&length);
if (length > 0) {
for (int i=0; i < indent; i++)
fprintf(of, " ");
fprintf(of, "------- start attributes -------");
}
for (PRUint32 j=0; j < length; j++) {
nsIDOMNode* node = nsnull;
map->Item(j, &node);
dump_node(of, node, indent, PR_TRUE);
}
if (length > 0) {
fprintf(of, "\n");
for (int k=0; k < indent; k++)
fprintf(of, " ");
fprintf(of, "------- end attributes -------");
}
}
static char* strip_whitespace(const PRUnichar* input, int length)
{
if (!input || length < 1) {
char* out = new char[1];
out[0] = 0;
return out;
}
char* out = new char[length+1];
char* op = out;
const PRUnichar* ip = input;
PRUnichar c = ' ';
PRUnichar pc = ' ';
int i = 0;
for (c = *ip++; i++<length; c = *ip++) {
if ((pc == ' ' || pc == '\n' || pc == '\t') &&
(c == ' ' || c == '\n' || c == '\t'))
continue;
*op++ = c;
pc = c;
}
*op++ = 0;
return out;
}
static const char* describe_type(int type)
{
switch (type) {
case nsIDOMNode::ELEMENT_NODE: return "ELEMENT";
case nsIDOMNode::ATTRIBUTE_NODE: return "ATTRIBUTE";
case nsIDOMNode::TEXT_NODE: return "TEXT";
case nsIDOMNode::CDATA_SECTION_NODE: return "CDATA_SECTION";
case nsIDOMNode::ENTITY_REFERENCE_NODE: return "ENTITY_REFERENCE";
case nsIDOMNode::ENTITY_NODE: return "ENTITY";
case nsIDOMNode::PROCESSING_INSTRUCTION_NODE: return "PROCESSING_INSTRUCTION";
case nsIDOMNode::COMMENT_NODE: return "COMMENT";
case nsIDOMNode::DOCUMENT_NODE: return "DOCUMENT";
case nsIDOMNode::DOCUMENT_TYPE_NODE: return "DOCUMENT_TYPE";
case nsIDOMNode::DOCUMENT_FRAGMENT_NODE: return "DOCUMENT_FRAGMENT";
case nsIDOMNode::NOTATION_NODE: return "NOTATION";
}
return "ERROR";
}
#endif