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gecko-dev/network/module/nsStubContext.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "net.h"
#include "mktrace.h"
#include "structs.h"
#include "ctxtfunc.h"
#include "xp_list.h"
#include "nsString.h"
#include "nsIStreamListener.h"
#include "nsNetStream.h"
/****************************************************************************/
/* Beginning of MWContext Evil!!! */
/* ------------------------------- */
/* */
/* Define a dummy MWContext where all of the upcalls are stubbed out. */
/* */
/****************************************************************************/
PRIVATE int
stub_noop(int x, ...)
{
#ifdef XP_MAC
#pragma unused (x)
#endif
/* DebugBreak(); */
return 0;
}
PRIVATE void stub_GraphProgressInit(MWContext *context,
URL_Struct *URL_s,
int32 content_length)
{
nsConnectionInfo *pConn;
if (NULL != URL_s->fe_data) {
if (URL_s->load_background)
return;
/*
* Retrieve the nsConnectionInfo object from the fe_data field
* of the URL_Struct...
*/
pConn = (nsConnectionInfo *)URL_s->fe_data;
if ((NULL != pConn) && (NULL != pConn->pConsumer)) {
nsAutoString status;
pConn->pConsumer->OnProgress(pConn->pURL, 0, content_length, status);
}
}
}
PRIVATE void stub_GraphProgress(MWContext *context,
URL_Struct *URL_s,
int32 bytes_received,
int32 bytes_since_last_time,
int32 content_length)
{
nsConnectionInfo *pConn;
if (NULL != URL_s->fe_data) {
if (URL_s->load_background)
return;
/*
* Retrieve the nsConnectionInfo object from the fe_data field
* of the URL_Struct...
*/
pConn = (nsConnectionInfo *)URL_s->fe_data;
if ((NULL != pConn) && (NULL != pConn->pConsumer)) {
nsAutoString status;
pConn->pConsumer->OnProgress(pConn->pURL, bytes_received,
content_length, status);
}
}
}
PRIVATE void stub_GraphProgressDestroy(MWContext *context,
URL_Struct *URL_s,
int32 content_length,
int32 total_bytes_read)
{
nsConnectionInfo *pConn;
/*
* XXX: Currently this function never calls OnProgress(...) because
* netlib calls FE_GraphProgressDestroy(...) after closing the
* stream... So, OnStopBinding(...) has already been called and
* the nsConnectionInfo->pConsumer has been released and NULLed...
*/
if (NULL != URL_s->fe_data) {
if (URL_s->load_background)
return;
/*
* Retrieve the nsConnectionInfo object from the fe_data field
* of the URL_Struct...
*/
pConn = (nsConnectionInfo *)URL_s->fe_data;
if ((NULL != pConn) && (NULL != pConn->pConsumer)) {
nsAutoString status;
pConn->pConsumer->OnProgress(pConn->pURL, total_bytes_read,
content_length, status);
}
}
}
#define MAKE_FE_TYPES_PREFIX(func) func##_t
#define MAKE_FE_FUNCS_TYPES
#include "mk_cx_fn.h"
#undef MAKE_FE_FUNCS_TYPES
#define stub_CreateNewDocWindow (CreateNewDocWindow_t)stub_noop
#define stub_LayoutNewDocument (LayoutNewDocument_t)stub_noop
#define stub_SetDocTitle (SetDocTitle_t)stub_noop
#define stub_FinishedLayout (FinishedLayout_t)stub_noop
#define stub_TranslateISOText (TranslateISOText_t)stub_noop
#define stub_GetTextInfo (GetTextInfo_t)stub_noop
#define stub_MeasureText (MeasureText_t)stub_noop
#define stub_GetEmbedSize (GetEmbedSize_t)stub_noop
#define stub_GetJavaAppSize (GetJavaAppSize_t)stub_noop
#define stub_GetFormElementInfo (GetFormElementInfo_t)stub_noop
#define stub_GetFormElementValue (GetFormElementValue_t)stub_noop
#define stub_ResetFormElement (ResetFormElement_t)stub_noop
#define stub_SetFormElementToggle (SetFormElementToggle_t)stub_noop
#define stub_FreeFormElement (FreeFormElement_t)stub_noop
#define stub_FreeImageElement (FreeImageElement_t)stub_noop
#define stub_FreeEmbedElement (FreeEmbedElement_t)stub_noop
#define stub_FreeJavaAppElement (FreeJavaAppElement_t)stub_noop
#define stub_CreateEmbedWindow (CreateEmbedWindow_t)stub_noop
#define stub_SaveEmbedWindow (SaveEmbedWindow_t)stub_noop
#define stub_RestoreEmbedWindow (RestoreEmbedWindow_t)stub_noop
#define stub_DestroyEmbedWindow (DestroyEmbedWindow_t)stub_noop
#define stub_HideJavaAppElement (HideJavaAppElement_t)stub_noop
#define stub_FreeEdgeElement (FreeEdgeElement_t)stub_noop
#define stub_FormTextIsSubmit (FormTextIsSubmit_t)stub_noop
#define stub_DisplaySubtext (DisplaySubtext_t)stub_noop
#define stub_DisplayText (DisplayText_t)stub_noop
#define stub_DisplayImage (DisplayImage_t)stub_noop
#define stub_DisplayEmbed (DisplayEmbed_t)stub_noop
#define stub_DisplayJavaApp (DisplayJavaApp_t)stub_noop
#define stub_DisplaySubImage (DisplaySubImage_t)stub_noop
#define stub_DisplayEdge (DisplayEdge_t)stub_noop
#define stub_DisplayTable (DisplayTable_t)stub_noop
#define stub_DisplayCell (DisplayCell_t)stub_noop
#define stub_InvalidateEntireTableOrCell (InvalidateEntireTableOrCell_t)stub_noop
#define stub_DisplayAddRowOrColBorder (DisplayAddRowOrColBorder_t)stub_noop
#define stub_DisplaySubDoc (DisplaySubDoc_t)stub_noop
#define stub_DisplayLineFeed (DisplayLineFeed_t)stub_noop
#define stub_DisplayHR (DisplayHR_t)stub_noop
#define stub_DisplayBullet (DisplayBullet_t)stub_noop
#define stub_DisplayFormElement (DisplayFormElement_t)stub_noop
#define stub_DisplayBorder (DisplayBorder_t)stub_noop
#define stub_UpdateEnableStates (UpdateEnableStates_t)stub_noop
#define stub_DisplayFeedback (DisplayFeedback_t)stub_noop
#define stub_ClearView (ClearView_t)stub_noop
#define stub_SetDocDimension (SetDocDimension_t)stub_noop
#define stub_SetDocPosition (SetDocPosition_t)stub_noop
#define stub_GetDocPosition (GetDocPosition_t)stub_noop
#define stub_BeginPreSection (BeginPreSection_t)stub_noop
#define stub_EndPreSection (EndPreSection_t)stub_noop
#define stub_SetProgressBarPercent (SetProgressBarPercent_t)stub_noop
#define stub_SetBackgroundColor (SetBackgroundColor_t)stub_noop
#define stub_Progress (Progress_t)stub_noop
#define stub_Alert (Alert_t)stub_noop
#define stub_SetCallNetlibAllTheTime (SetCallNetlibAllTheTime_t)stub_noop
#define stub_ClearCallNetlibAllTheTime (ClearCallNetlibAllTheTime_t)stub_noop
#define stub_GraphProgressInit (GraphProgressInit_t)stub_GraphProgressInit
#define stub_GraphProgressDestroy (GraphProgressDestroy_t)stub_GraphProgressDestroy
#define stub_GraphProgress (GraphProgress_t)stub_GraphProgress
#define stub_UseFancyFTP (UseFancyFTP_t)stub_noop
#define stub_UseFancyNewsgroupListing (UseFancyNewsgroupListing_t)stub_noop
#define stub_FileSortMethod (FileSortMethod_t)stub_noop
#define stub_ShowAllNewsArticles (ShowAllNewsArticles_t)stub_noop
#define stub_Confirm (Confirm_t)stub_noop
#define stub_Prompt (Prompt_t)stub_noop
#define stub_PromptWithCaption (PromptWithCaption_t)stub_noop
#define stub_PromptUsernameAndPassword (PromptUsernameAndPassword_t)stub_noop
#define stub_PromptPassword (PromptPassword_t)stub_noop
#define stub_EnableClicking (EnableClicking_t)stub_noop
#define stub_AllConnectionsComplete (AllConnectionsComplete_t)stub_noop
#define stub_ImageSize (ImageSize_t)stub_noop
#define stub_ImageData (ImageData_t)stub_noop
#define stub_ImageIcon (ImageIcon_t)stub_noop
#define stub_ImageOnScreen (ImageOnScreen_t)stub_noop
#define stub_SetColormap (SetColormap_t)stub_noop
#ifdef LAYERS
#define stub_EraseBackground (EraseBackground_t)stub_noop
#define stub_SetDrawable (SetDrawable_t)stub_noop
#define stub_GetTextFrame (GetTextFrame_t)stub_noop
#define stub_SetClipRegion (SetClipRegion_t)stub_noop
#define stub_SetOrigin (SetOrigin_t)stub_noop
#define stub_GetOrigin (GetOrigin_t)stub_noop
#define stub_GetTextFrame (GetTextFrame_t)stub_noop
#endif
#define stub_GetDefaultBackgroundColor (GetDefaultBackgroundColor_t)stub_noop
#define stub_LoadFontResource (LoadFontResource_t)stub_noop
#define stub_DrawJavaApp (DrawJavaApp_t)stub_noop
#define stub_HandleClippingView (HandleClippingView_t)stub_noop
/* Just reuse the same set of context functions: */
ContextFuncs stub_context_funcs;
XP_List *stub_context_list = NULL;
MWContext *new_stub_context()
{
static int funcsInitialized = 0;
MWContext *context;
if (!funcsInitialized) {
#define MAKE_FE_FUNCS_PREFIX(f) stub_##f
#define MAKE_FE_FUNCS_ASSIGN stub_context_funcs.
#include "mk_cx_fn.h"
funcsInitialized = 1;
stub_context_list = XP_ListNew();
}
context = (MWContext *)calloc(sizeof(struct MWContext_), 1);
if (nsnull != context) {
context->funcs = &stub_context_funcs;
context->type = MWContextBrowser;
if (nsnull != stub_context_list) {
XP_ListAddObjectToEnd(stub_context_list, context);
}
}
return context;
}
void free_stub_context(MWContext *window_id)
{
TRACEMSG(("Freeing stub context...\n"));
if (stub_context_list) {
PRBool result;
result = XP_ListRemoveObject(stub_context_list, window_id);
PR_ASSERT(PR_TRUE == result);
}
free(window_id);
}
extern "C" MWContext * XP_FindContextOfType (MWContext * context,
MWContextType type)
{
MWContext *window_id;
/*
* Return the context that was passed in if it is the correct type
*/
if (nsnull != context) {
if (context->type == type) {
window_id = context;
}
}
/*
* Otherwise, the type MUST be a MWBrowserContext, since that is the
* only type of context that is created...
*
* Return the first stub context, since it is as good as any... :-)
*/
else if (MWContextBrowser == type) {
window_id = (MWContext *)XP_ListTopObject(stub_context_list);
}
return window_id;
}
/****************************************************************************/
/* End of MWContext Evil!!! */
/****************************************************************************/
nsConnectionInfo *GetConnectionInfoFromStream(NET_StreamClass *stream)
{
URL_Struct *URL_s = (URL_Struct *)stream->data_object;
return (URL_s) ? (nsConnectionInfo *)URL_s->fe_data : NULL;
}
/*
* Define a NET_StreamClass which pushes its data into an nsIStream
* and fires off notifications through the nsIStreamListener interface
*/
void stub_complete(NET_StreamClass *stream)
{
URL_Struct *URL_s = (URL_Struct *)stream->data_object;
nsConnectionInfo *pConn = GetConnectionInfoFromStream(stream);
TRACEMSG(("+++ stream complete.\n"));
/* Close the stream and remove it from the ConnectionInfo... */
pConn->pNetStream->Close();
pConn->pNetStream->Release();
pConn->pNetStream = NULL;
/* Notify the Data Consumer that the Binding has completed... */
if (pConn->pConsumer) {
nsAutoString status;
pConn->pConsumer->OnStopBinding(pConn->pURL, NS_BINDING_SUCCEEDED, status);
pConn->pConsumer->Release();
pConn->pConsumer = NULL;
}
/* Release the URL_Struct hanging off of the data_object */
stream->data_object = NULL;
NET_DropURLStruct(URL_s);
}
void stub_abort(NET_StreamClass *stream, int status)
{
URL_Struct *URL_s = (URL_Struct *)stream->data_object;
nsConnectionInfo *pConn = GetConnectionInfoFromStream(stream);
TRACEMSG(("+++ stream abort. Status = %d\n", status));
/* Close the stream and remove it from the ConnectionInfo... */
pConn->pNetStream->Close();
pConn->pNetStream->Release();
pConn->pNetStream = NULL;
/* Notify the Data Consumer that the Binding has completed... */
/*
* XXX: Currently, there is no difference between complete and
* abort...
*/
if (pConn->pConsumer) {
nsAutoString status;
pConn->pConsumer->OnStopBinding(pConn->pURL, NS_BINDING_ABORTED, status);
pConn->pConsumer->Release();
pConn->pConsumer = NULL;
}
/* Release the URL_Struct hanging off of the data_object */
stream->data_object = NULL;
NET_DropURLStruct(URL_s);
}
int stub_put_block(NET_StreamClass *stream, const char *buffer, int32 length)
{
PRInt32 bytesWritten, errorCode;
nsConnectionInfo *pConn = GetConnectionInfoFromStream(stream);
TRACEMSG(("+++ stream put_block. Length = %d\n", length));
/*
* XXX: Sometimes put_block(...) will be called without having
* called is_write_ready(...) first. One case is when a stream
* is interrupted... In this case, Netlib will call put_block(...)
* with the string "Transfer Interrupted!"
*/
bytesWritten = pConn->pNetStream->Write(&errorCode, buffer, 0, length);
/* Abort the connection... */
if (NS_INPUTSTREAM_EOF == errorCode) {
return -1;
}
/* XXX: check return value to abort connection if necessary */
if (pConn->pConsumer && (0 < bytesWritten)) {
pConn->pConsumer->OnDataAvailable(pConn->pURL, pConn->pNetStream, bytesWritten);
}
return (bytesWritten == length);
}
unsigned int stub_is_write_ready(NET_StreamClass *stream)
{
PRInt32 errorCode;
unsigned int free_space = 0;
URL_Struct *URL_s = (URL_Struct *)stream->data_object;
nsConnectionInfo *pConn = GetConnectionInfoFromStream(stream);
free_space = (unsigned int)pConn->pNetStream->GetAvailableSpace(&errorCode);
/*
* If the InputStream has been closed... Return 1 byte available so
* Netlib will call put_block(...) one more time...
*/
if (NS_INPUTSTREAM_EOF == errorCode) {
free_space = 1;
}
TRACEMSG(("+++ stream is_write_ready. Returning %d\n", free_space));
return free_space;
}
extern "C" {
/*
*Find a converter routine to create a stream and return the stream struct
*/
PUBLIC NET_StreamClass *
NET_NGLayoutConverter(FO_Present_Types format_out,
void *converter_obj,
URL_Struct *URL_s,
MWContext *context)
{
NET_StreamClass *stream = NULL;
PRBool bSuccess = PR_TRUE;
/*
* Only create a stream if an nsConnectionInfo object is
* available from the fe_data...
*/
if (NULL != URL_s->fe_data) {
stream = (NET_StreamClass *)calloc(sizeof(NET_StreamClass), 1);
if (NULL != stream) {
nsConnectionInfo *pConn;
/*
* Initialize the NET_StreamClass instance...
*/
stream->name = "Stub Stream";
stream->window_id = context;
stream->complete = stub_complete;
stream->abort = stub_abort;
stream->put_block = stub_put_block;
stream->is_write_ready = stub_is_write_ready;
/*
* Retrieve the nsConnectionInfo object from the fe_data field
* of the URL_Struct...
*/
pConn = (nsConnectionInfo *)URL_s->fe_data;
/*
* If the URL address has been rewritten by netlib then update
* the cached info in the URL object...
*/
if ((URL_s->address_modified) && (NULL != pConn->pURL)) {
pConn->pURL->Set(NET_URLStruct_Address(URL_s));
}
/*
* Create an Async stream unless a blocking stream is already
* available in the ConnectionInfo...
*/
if (NULL == pConn->pNetStream) {
pConn->pNetStream = new nsAsyncStream(8192);
if (NULL == pConn->pNetStream) {
free(stream);
return NULL;
}
pConn->pNetStream->AddRef();
}
/* Hang the URL_Struct off of the NET_StreamClass */
NET_HoldURLStruct(URL_s);
stream->data_object = URL_s;
/* Notify the data consumer that Binding is beginning...*/
/* XXX: check result to terminate connection if necessary */
#ifdef NOISY
printf("+++ Created a stream for %s\n", URL_s->address);
#endif
if (pConn->pConsumer) {
nsresult rv;
rv = pConn->pConsumer->OnStartBinding(pConn->pURL, URL_s->content_type);
/*
* If OnStartBinding fails, then tear down the NET_StreamClass
* and release all references...
*/
if (NS_OK != rv) {
NET_DropURLStruct(URL_s);
free(stream);
stream = NULL;
/*
* The NET_GetURL(...) exit_routine will clean up the
* nsConnectionInfo and associated objects.
*/
}
}
}
}
return stream;
}
}; /* extern "C" */
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