a=edburns
r=ashuk bug=2069 Native code for spec compliant webclient impl. git-svn-id: svn://10.0.0.236/trunk@62196 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
edburns%acm.org
450
mozilla/java/webclient/src_moz/NativeEventThread.cpp
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450
mozilla/java/webclient/src_moz/NativeEventThread.cpp
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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is RaptorCanvas.
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*
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* The Initial Developer of the Original Code is Kirk Baker and
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* Ian Wilkinson. Portions created by Kirk Baker and Ian Wilkinson are
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* Copyright (C) 1999 Kirk Baker and Ian Wilkinson. All
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* Rights Reserved.
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*
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* Contributor(s): Kirk Baker <kbaker@eb.com>
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* Ian Wilkinson <iw@ennoble.com>
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* Mark Lin <mark.lin@eng.sun.com>
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* Mark Goddard
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* Ed Burns <edburns@acm.org>
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* Ann Sunhachawee
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*/
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#include "NativeEventThread.h"
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#include "jni_util.h"
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#include "EventRegistration.h" // event callbacks
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#ifdef XP_PC
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#include <windows.h>
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#endif
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#include "nsAppShellCIDs.h" // for NS_SESSIONHISTORY_CID
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#include "nsIBaseWindow.h" // to get methods like SetVisibility
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#include "nsCOMPtr.h" // to get nsIBaseWindow from webshell
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//nsIDocShell is included in jni_util.h
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#include "nsIEventQueueService.h" // for PLEventQueue
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#include "nsIPref.h" // for preferences
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#include "nsRepository.h"
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#include "nsIServiceManager.h" // for nsServiceManager::GetService
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#include "nsISessionHistory.h" // for history
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#include "nsIThread.h" // for PRThread
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//nsIWebShell is included in jni_util.h
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static NS_DEFINE_IID(kIEventQueueServiceIID, NS_IEVENTQUEUESERVICE_IID);
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static NS_DEFINE_IID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
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static NS_DEFINE_IID(kWebShellCID, NS_WEB_SHELL_CID);
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static NS_DEFINE_IID(kIWebShellIID, NS_IWEB_SHELL_IID);
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static NS_DEFINE_CID(kPrefCID, NS_PREF_CID);
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static NS_DEFINE_IID(kISessionHistoryIID, NS_ISESSIONHISTORY_IID);
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static NS_DEFINE_CID(kSessionHistoryCID, NS_SESSIONHISTORY_CID);
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//
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// Local functions
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//
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/**
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* Called from InitMozillaStuff().
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*/
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int processEventLoop(WebShellInitContext * initContext);
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/**
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* Called from Java nativeInitialize to create the webshell, history,
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* prefs, and other mozilla things, then start the event loop.
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*/
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nsresult InitMozillaStuff (WebShellInitContext * arg);
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//
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// Local data
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//
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static nsISessionHistory *gHistory = NULL;
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char * errorMessages[] = {
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"No Error",
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"Could not obtain the event queue service.",
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"Unable to create the WebShell instance.",
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"Unable to initialize the WebShell instance.",
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"Unable to show the WebShell."
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};
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/**
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* a null terminated array of listener interfaces we support.
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* PENDING(): this should probably live in EventRegistration.h
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*/
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const char *gSupportedListenerInterfaces[] = {
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"org/mozilla/webclient/DocumentLoadListener",
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NULL
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};
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// these index into the gSupportedListenerInterfaces array, this should
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// also live in EventRegistration.h
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typedef enum {
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DOCUMENT_LOAD_LISTENER = 0,
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LISTENER_NOT_FOUND
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} LISTENER_CLASSES;
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//
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// JNI methods
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//
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JNIEXPORT void JNICALL Java_org_mozilla_webclient_wrapper_1native_NativeEventThread_nativeInitialize
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(JNIEnv *env, jobject obj, jint webShellPtr)
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{
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nsresult rv = NS_ERROR_FAILURE;
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WebShellInitContext * initContext = (WebShellInitContext *) webShellPtr;
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if (NULL == initContext) {
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::util_ThrowExceptionToJava(env,
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"NULL webShellPtr passed to nativeInitialize.");
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return;
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}
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if (NULL == gVm) { // declared in jni_util.h
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env->GetJavaVM(&gVm); // save this vm reference
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}
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rv = InitMozillaStuff(initContext);
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if (NS_FAILED(rv)) {
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::util_ThrowExceptionToJava(env,
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errorMessages[initContext->initFailCode]);
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return;
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}
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while (initContext->initComplete == FALSE) {
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::PR_Sleep(PR_INTERVAL_NO_WAIT);
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if (initContext->initFailCode != 0) {
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::util_ThrowExceptionToJava(initContext->env, errorMessages[initContext->initFailCode]);
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return;
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}
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}
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}
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JNIEXPORT void JNICALL Java_org_mozilla_webclient_wrapper_1native_NativeEventThread_nativeProcessEvents
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(JNIEnv *env, jobject obj, jint webShellPtr)
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{
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WebShellInitContext * initContext = (WebShellInitContext *) webShellPtr;
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if (NULL == initContext) {
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::util_ThrowExceptionToJava(env,
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"NULL webShellPtr passed to nativeProcessEvents.");
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return;
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}
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processEventLoop(initContext);
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}
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/**
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* <P> This method takes the typedListener, which is a
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* WebclientEventListener java subclass, figures out what type of
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* subclass it is, using the gSupportedListenerInterfaces array, and
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* calls the appropriate add*Listener local function. </P>
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*<P> PENDING(): we could do away with the switch statement using
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* function pointers, or some other mechanism. </P>
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* <P>the NewGlobalRef call is very important, since the argument
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* typedListener is used to call back into java, at another time, as a
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* result of the a mozilla event being fired.</P>
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* PENDING(): implement nativeRemoveListener, which must call
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* RemoveGlobalRef.
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* See the comments for EventRegistration.h:addDocumentLoadListener
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*/
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JNIEXPORT void JNICALL Java_org_mozilla_webclient_wrapper_1native_NativeEventThread_nativeAddListener
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(JNIEnv *env, jobject obj, jint webShellPtr, jobject typedListener)
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{
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WebShellInitContext *initContext = (WebShellInitContext *)webShellPtr;
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if (initContext == NULL) {
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::util_ThrowExceptionToJava(env, "Exception: null initContext passed tonativeAddListener");
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return;
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}
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if (NULL == initContext->nativeEventThread) {
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// store the java EventRegistrationImpl class in the initContext
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initContext->nativeEventThread = obj; // VERY IMPORTANT!!
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// This enables the listener to call back into java
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}
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jclass clazz = NULL;
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int listenerType = 0;
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while (NULL != gSupportedListenerInterfaces[listenerType]) {
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if (NULL ==
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(clazz =
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env->FindClass(gSupportedListenerInterfaces[listenerType]))) {
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return;
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}
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if (env->IsInstanceOf(typedListener, clazz)) {
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// We've got a winner!
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break;
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}
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listenerType++;
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}
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if (LISTENER_NOT_FOUND == (LISTENER_CLASSES) listenerType) {
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::util_ThrowExceptionToJava(env, "Exception: NativeEventThread.nativeAddListener(): can't find listener \n\tclass for argument");
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return;
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}
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jobject globalRef = NULL;
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// PENDING(edburns): make sure do DeleteGlobalRef on the removeListener
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if (NULL == (globalRef = env->NewGlobalRef(typedListener))) {
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::util_ThrowExceptionToJava(env, "Exception: NativeEventThread.nativeAddListener(): can't create NewGlobalRef\n\tfor argument");
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return;
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}
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switch(listenerType) {
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case DOCUMENT_LOAD_LISTENER:
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addDocumentLoadListener(env, initContext, globalRef);
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break;
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}
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}
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/**
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* This function processes methods inserted into WebShellInitContext's
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* actionQueue. It is called once during the initialization of the
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* NativeEventThread java thread, and infinitely in
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* NativeEventThread.run()'s event loop. The call to PL_HandleEvent
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* below, ends up calling the nsActionEvent subclass's handleEvent()
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* method. After which it calls nsActionEvent::destroyEvent().
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*/
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int processEventLoop(WebShellInitContext * initContext)
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{
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#ifdef XP_UNIX
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while(gtk_events_pending()) {
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gtk_main_iteration();
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}
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#else
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// PENDING(mark): Does this work on the Mac?
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MSG msg;
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if (::PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE)) {
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if (::GetMessage(&msg, NULL, 0, 0)) {
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::TranslateMessage(&msg);
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::DispatchMessage(&msg);
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}
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}
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#endif
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::PR_Sleep(PR_INTERVAL_NO_WAIT);
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if ((initContext->initComplete) && (initContext->actionQueue)) {
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PL_ENTER_EVENT_QUEUE_MONITOR(initContext->actionQueue);
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if (::PL_EventAvailable(initContext->actionQueue)) {
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PLEvent * event = ::PL_GetEvent(initContext->actionQueue);
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if (event != NULL) {
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::PL_HandleEvent(event);
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}
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}
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PL_EXIT_EVENT_QUEUE_MONITOR(initContext->actionQueue);
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}
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if (initContext->stopThread) {
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initContext->stopThread++;
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return 0;
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}
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return 1;
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}
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nsresult InitMozillaStuff (WebShellInitContext * initContext)
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{
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nsIEventQueueService * aEventQService = nsnull;
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nsresult rv = NS_ERROR_FAILURE;
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PRBool allowPlugins = PR_FALSE;
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//TODO Add tracing from nspr.
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): Create the Event Queue for the UI thread...\n", initContext);
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#endif
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// Create the Event Queue for the UI thread...
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rv = nsServiceManager::GetService(kEventQueueServiceCID,
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kIEventQueueServiceIID,
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(nsISupports **) &aEventQService);
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kEventQueueError;
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return rv;
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}
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// Create the event queue.
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rv = aEventQService->CreateThreadEventQueue();
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initContext->embeddedThread = PR_GetCurrentThread();
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// Create the action queue
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if (initContext->embeddedThread) {
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): embeddedThread != NULL\n", initContext);
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#endif
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if (initContext->actionQueue == NULL) {
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): Create the action queue\n", initContext);
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#endif
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// We need to do something different for Unix
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nsIEventQueue * EQueue = nsnull;
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rv = aEventQService->GetThreadEventQueue(initContext->embeddedThread,
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&EQueue);
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kCreateWebShellError;
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return rv;
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}
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#ifdef XP_UNIX
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gdk_input_add(EQueue->GetEventQueueSelectFD(),
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GDK_INPUT_READ,
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event_processor_callback,
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EQueue);
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#endif
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PLEventQueue * plEventQueue = nsnull;
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EQueue->GetPLEventQueue(&plEventQueue);
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initContext->actionQueue = plEventQueue;
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}
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}
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else {
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initContext->initFailCode = kCreateWebShellError;
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return NS_ERROR_UNEXPECTED;
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}
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): Create the WebShell...\n", initContext);
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#endif
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// Create the WebShell.
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rv = nsRepository::CreateInstance(kWebShellCID, nsnull, kIWebShellIID, (void**)&initContext->webShell);
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kCreateWebShellError;
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return rv;
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}
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): Init the WebShell...\n", initContext);
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#endif
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rv = initContext->webShell->Init((nsNativeWidget *)initContext->parentHWnd,
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initContext->x, initContext->y, initContext->w, initContext->h);
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kInitWebShellError;
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return rv;
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}
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): Install Prefs in the Webshell...\n", initContext);
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#endif
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nsIPref *prefs;
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rv = nsServiceManager::GetService(kPrefCID,
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nsIPref::GetIID(),
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(nsISupports **)&prefs);
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if (NS_SUCCEEDED(rv)) {
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// Set the prefs in the outermost webshell.
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initContext->webShell->SetPrefs(prefs);
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nsServiceManager::ReleaseService(kPrefCID, prefs);
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}
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if (NULL == gHistory) {
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rv = nsComponentManager::CreateInstance(kSessionHistoryCID, nsnull, kISessionHistoryIID,
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(void**)&gHistory);
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kHistoryWebShellError;
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return rv;
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}
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}
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initContext->webShell->SetSessionHistory(gHistory);
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// set the sessionHistory in the initContexn
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initContext->sessionHistory = gHistory;
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): Show the WebShell...\n", initContext);
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#endif
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nsCOMPtr<nsIBaseWindow> baseWindow;
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rv = initContext->webShell->QueryInterface(NS_GET_IID(nsIBaseWindow),
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getter_AddRefs(baseWindow));
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kShowWebShellError;
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return rv;
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}
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rv = baseWindow->SetVisibility(PR_TRUE);
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kShowWebShellError;
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return rv;
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}
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// set the docShell
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rv = initContext->webShell->QueryInterface(NS_GET_IID(nsIDocShell),
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getter_AddRefs(initContext->docShell));
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if (NS_FAILED(rv)) {
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initContext->initFailCode = kHistoryWebShellError;
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::util_ThrowExceptionToJava(initContext->env,
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"Exception: Can't get DocShell from nsIWebShell");
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return rv;
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}
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initContext->initComplete = TRUE;
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#if DEBUG_RAPTOR_CANVAS
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printf("InitMozillaStuff(%lx): enter event loop\n", initContext);
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#endif
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// Just need to loop once to clear out events before returning
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processEventLoop(initContext);
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return rv;
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}
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Reference in New Issue
Block a user