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gecko/modules/libpr0n/decoders/icon/win/nsIconChannel.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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 Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Brian Ryner.
* Portions created by the Initial Developer are Copyright (C) 2000
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Scott MacGregor <mscott@netscape.com>
* Neil Rashbrook <neil@parkwaycc.co.uk>
* Ben Goodger <ben@mozilla.org>
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#include "nsIconChannel.h"
#include "nsIIconURI.h"
#include "nsIServiceManager.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "nsMimeTypes.h"
#include "nsMemory.h"
#include "nsIStringStream.h"
#include "nsIURL.h"
#include "nsNetUtil.h"
#include "nsInt64.h"
#include "nsIFile.h"
#include "nsIFileURL.h"
#include "nsIMIMEService.h"
#include "nsCExternalHandlerService.h"
#include "nsDirectoryServiceDefs.h"
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0600
#endif
#ifdef WINCE
#define SHGetFileInfoW SHGetFileInfo
#endif
// we need windows.h to read out registry information...
#include <windows.h>
#include <shellapi.h>
#include <shlobj.h>
#include <wchar.h>
struct ICONFILEHEADER {
PRUint16 ifhReserved;
PRUint16 ifhType;
PRUint16 ifhCount;
};
struct ICONENTRY {
PRInt8 ieWidth;
PRInt8 ieHeight;
PRUint8 ieColors;
PRUint8 ieReserved;
PRUint16 iePlanes;
PRUint16 ieBitCount;
PRUint32 ieSizeImage;
PRUint32 ieFileOffset;
};
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
typedef HRESULT (WINAPI*SHGetStockIconInfoPtr) (SHSTOCKICONID siid, UINT uFlags, SHSTOCKICONINFO *psii);
// Match stock icons with names
static SHSTOCKICONID GetStockIconIDForName(const nsACString &aStockName)
{
// UAC shield icon
if (aStockName == NS_LITERAL_CSTRING("uac-shield"))
return SIID_SHIELD;
return SIID_INVALID;
}
#endif
// nsIconChannel methods
nsIconChannel::nsIconChannel()
{
}
nsIconChannel::~nsIconChannel()
{}
NS_IMPL_THREADSAFE_ISUPPORTS4(nsIconChannel,
nsIChannel,
nsIRequest,
nsIRequestObserver,
nsIStreamListener)
nsresult nsIconChannel::Init(nsIURI* uri)
{
NS_ASSERTION(uri, "no uri");
mUrl = uri;
mOriginalURI = uri;
nsresult rv;
mPump = do_CreateInstance(NS_INPUTSTREAMPUMP_CONTRACTID, &rv);
return rv;
}
////////////////////////////////////////////////////////////////////////////////
// nsIRequest methods:
NS_IMETHODIMP nsIconChannel::GetName(nsACString &result)
{
return mUrl->GetSpec(result);
}
NS_IMETHODIMP nsIconChannel::IsPending(PRBool *result)
{
return mPump->IsPending(result);
}
NS_IMETHODIMP nsIconChannel::GetStatus(nsresult *status)
{
return mPump->GetStatus(status);
}
NS_IMETHODIMP nsIconChannel::Cancel(nsresult status)
{
return mPump->Cancel(status);
}
NS_IMETHODIMP nsIconChannel::Suspend(void)
{
return mPump->Suspend();
}
NS_IMETHODIMP nsIconChannel::Resume(void)
{
return mPump->Resume();
}
NS_IMETHODIMP nsIconChannel::GetLoadGroup(nsILoadGroup* *aLoadGroup)
{
*aLoadGroup = mLoadGroup;
NS_IF_ADDREF(*aLoadGroup);
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::SetLoadGroup(nsILoadGroup* aLoadGroup)
{
mLoadGroup = aLoadGroup;
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::GetLoadFlags(PRUint32 *aLoadAttributes)
{
return mPump->GetLoadFlags(aLoadAttributes);
}
NS_IMETHODIMP nsIconChannel::SetLoadFlags(PRUint32 aLoadAttributes)
{
return mPump->SetLoadFlags(aLoadAttributes);
}
////////////////////////////////////////////////////////////////////////////////
// nsIChannel methods:
NS_IMETHODIMP nsIconChannel::GetOriginalURI(nsIURI* *aURI)
{
*aURI = mOriginalURI;
NS_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::SetOriginalURI(nsIURI* aURI)
{
NS_ENSURE_ARG_POINTER(aURI);
mOriginalURI = aURI;
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::GetURI(nsIURI* *aURI)
{
*aURI = mUrl;
NS_IF_ADDREF(*aURI);
return NS_OK;
}
NS_IMETHODIMP
nsIconChannel::Open(nsIInputStream **_retval)
{
return MakeInputStream(_retval, PR_FALSE);
}
nsresult nsIconChannel::ExtractIconInfoFromUrl(nsIFile ** aLocalFile, PRUint32 * aDesiredImageSize, nsCString &aContentType, nsCString &aFileExtension)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIMozIconURI> iconURI (do_QueryInterface(mUrl, &rv));
NS_ENSURE_SUCCESS(rv, rv);
iconURI->GetImageSize(aDesiredImageSize);
iconURI->GetContentType(aContentType);
iconURI->GetFileExtension(aFileExtension);
nsCOMPtr<nsIURL> url;
rv = iconURI->GetIconURL(getter_AddRefs(url));
if (NS_FAILED(rv) || !url) return NS_OK;
nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(url, &rv);
if (NS_FAILED(rv) || !fileURL) return NS_OK;
nsCOMPtr<nsIFile> file;
rv = fileURL->GetFile(getter_AddRefs(file));
if (NS_FAILED(rv) || !file) return NS_OK;
return file->Clone(aLocalFile);
}
NS_IMETHODIMP nsIconChannel::AsyncOpen(nsIStreamListener *aListener, nsISupports *ctxt)
{
nsCOMPtr<nsIInputStream> inStream;
nsresult rv = MakeInputStream(getter_AddRefs(inStream), PR_TRUE);
if (NS_FAILED(rv))
return rv;
// Init our streampump
rv = mPump->Init(inStream, nsInt64(-1), nsInt64(-1), 0, 0, PR_FALSE);
if (NS_FAILED(rv))
return rv;
rv = mPump->AsyncRead(this, ctxt);
if (NS_SUCCEEDED(rv)) {
// Store our real listener
mListener = aListener;
// Add ourself to the load group, if available
if (mLoadGroup)
mLoadGroup->AddRequest(this, nsnull);
}
return rv;
}
#ifndef WINCE
static DWORD GetSpecialFolderIcon(nsIFile* aFile, int aFolder, SHFILEINFOW* aSFI, UINT aInfoFlags)
{
DWORD shellResult = 0;
if (!aFile)
return shellResult;
PRUnichar fileNativePath[MAX_PATH];
nsAutoString fileNativePathStr;
aFile->GetPath(fileNativePathStr);
::GetShortPathNameW(fileNativePathStr.get(), fileNativePath, NS_ARRAY_LENGTH(fileNativePath));
LPITEMIDLIST idList;
HRESULT hr = ::SHGetSpecialFolderLocation(NULL, aFolder, &idList);
if (SUCCEEDED(hr)) {
PRUnichar specialNativePath[MAX_PATH];
::SHGetPathFromIDListW(idList, specialNativePath);
::GetShortPathNameW(specialNativePath, specialNativePath, NS_ARRAY_LENGTH(specialNativePath));
if (!wcsicmp(fileNativePath, specialNativePath)) {
aInfoFlags |= (SHGFI_PIDL | SHGFI_SYSICONINDEX);
shellResult = ::SHGetFileInfoW((LPCWSTR)(LPCITEMIDLIST)idList, 0, aSFI,
sizeof(*aSFI), aInfoFlags);
IMalloc* pMalloc;
hr = ::SHGetMalloc(&pMalloc);
if (SUCCEEDED(hr)) {
pMalloc->Free(idList);
pMalloc->Release();
}
}
}
return shellResult;
}
#endif
static UINT GetSizeInfoFlag(PRUint32 aDesiredImageSize)
{
UINT infoFlag;
if (aDesiredImageSize > 16)
#ifndef WINCE
infoFlag = SHGFI_SHELLICONSIZE;
#else
infoFlag = SHGFI_LARGEICON;
#endif
else
infoFlag = SHGFI_SMALLICON;
return infoFlag;
}
nsresult nsIconChannel::GetHIconFromFile(HICON *hIcon)
{
#ifdef WINCE_WINDOWS_MOBILE
// GetDIBits does not exist on windows mobile.
return NS_ERROR_NOT_AVAILABLE;
#else
nsXPIDLCString contentType;
nsCString fileExt;
nsCOMPtr<nsIFile> localFile; // file we want an icon for
PRUint32 desiredImageSize;
nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(localFile), &desiredImageSize, contentType, fileExt);
NS_ENSURE_SUCCESS(rv, rv);
// if the file exists, we are going to use it's real attributes...otherwise we only want to use it for it's extension...
SHFILEINFOW sfi;
UINT infoFlags = SHGFI_ICON;
PRBool fileExists = PR_FALSE;
nsAutoString filePath;
CopyASCIItoUTF16(fileExt, filePath);
if (localFile)
{
rv = localFile->Normalize();
NS_ENSURE_SUCCESS(rv, rv);
localFile->GetPath(filePath);
#ifndef WINCE
if (filePath.Length() < 2 || filePath[1] != ':')
return NS_ERROR_MALFORMED_URI; // UNC
#else
// WinCE paths don't have drive letters
if (filePath.Length() < 2 ||
filePath[0] != '\\' || filePath[1] == '\\')
return NS_ERROR_MALFORMED_URI; // UNC
#endif
if (filePath.Last() == ':')
filePath.Append('\\');
else {
localFile->Exists(&fileExists);
if (!fileExists)
localFile->GetLeafName(filePath);
}
}
if (!fileExists)
infoFlags |= SHGFI_USEFILEATTRIBUTES;
infoFlags |= GetSizeInfoFlag(desiredImageSize);
// if we have a content type... then use it! but for existing files, we want
// to show their real icon.
if (!fileExists && !contentType.IsEmpty())
{
nsCOMPtr<nsIMIMEService> mimeService (do_GetService(NS_MIMESERVICE_CONTRACTID, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCAutoString defFileExt;
mimeService->GetPrimaryExtension(contentType, fileExt, defFileExt);
// If the mime service does not know about this mime type, we show
// the generic icon.
// In any case, we need to insert a '.' before the extension.
filePath = NS_LITERAL_STRING(".") + NS_ConvertUTF8toUTF16(defFileExt);
}
#ifndef WINCE
// Is this the "Desktop" folder?
DWORD shellResult = GetSpecialFolderIcon(localFile, CSIDL_DESKTOP, &sfi, infoFlags);
if (!shellResult) {
// Is this the "My Documents" folder?
shellResult = GetSpecialFolderIcon(localFile, CSIDL_PERSONAL, &sfi, infoFlags);
}
#else
DWORD shellResult = 0;
// Fantastic. On WinCE, ::SHGetFileInfo (with a localFile) fails
// unless I also set another flag like this. We don't actually need
// the display name.
if (localFile)
infoFlags |= SHGFI_DISPLAYNAME;
#endif
// There are other "Special Folders" and Namespace entities that we are not
// fetching icons for, see:
// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/reference/enums/csidl.asp
// If we ever need to get them, code to do so would be inserted here.
// Not a special folder, or something else failed above.
if (!shellResult)
shellResult = ::SHGetFileInfoW(filePath.get(),
FILE_ATTRIBUTE_ARCHIVE, &sfi, sizeof(sfi), infoFlags);
if (shellResult && sfi.hIcon)
*hIcon = sfi.hIcon;
else
rv = NS_ERROR_NOT_AVAILABLE;
return rv;
#endif
}
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
nsresult nsIconChannel::GetStockHIcon(nsIMozIconURI *aIconURI, HICON *hIcon)
{
nsresult rv = NS_OK;
// We can only do this on Vista or above
HMODULE hShellDLL = ::LoadLibraryW(L"shell32.dll");
SHGetStockIconInfoPtr pSHGetStockIconInfo =
(SHGetStockIconInfoPtr) ::GetProcAddress(hShellDLL, "SHGetStockIconInfo");
if (pSHGetStockIconInfo)
{
PRUint32 desiredImageSize;
aIconURI->GetImageSize(&desiredImageSize);
nsCAutoString stockIcon;
aIconURI->GetStockIcon(stockIcon);
SHSTOCKICONID stockIconID = GetStockIconIDForName(stockIcon);
if (stockIconID == SIID_INVALID)
return NS_ERROR_NOT_AVAILABLE;
UINT infoFlags = SHGSI_ICON;
infoFlags |= GetSizeInfoFlag(desiredImageSize);
SHSTOCKICONINFO sii = {0};
sii.cbSize = sizeof(sii);
HRESULT hr = pSHGetStockIconInfo(stockIconID, infoFlags, &sii);
if (SUCCEEDED(hr))
*hIcon = sii.hIcon;
else
rv = NS_ERROR_FAILURE;
}
else
{
rv = NS_ERROR_NOT_AVAILABLE;
}
if (hShellDLL)
::FreeLibrary(hShellDLL);
return rv;
}
#endif
#ifdef WINCE
int GetDIBits(HDC hdc,
HBITMAP hbmp,
UINT uStartScan,
UINT cScanLines,
LPVOID lpvBits,
LPBITMAPINFO lpbi,
UINT uUsage)
{
// Enforce some assumptions this simplified implementation makes
if (!hdc || !hbmp || uStartScan != 0 ||
!lpbi || uUsage != DIB_RGB_COLORS ||
lpvBits == NULL && lpbi->bmiHeader.biSize != sizeof(BITMAPINFOHEADER))
return 0;
BITMAP bmpInfo;
if (!::GetObject(hbmp, sizeof(BITMAP), &bmpInfo))
return 0;
lpbi->bmiHeader.biWidth = bmpInfo.bmWidth;
lpbi->bmiHeader.biHeight = bmpInfo.bmHeight;
lpbi->bmiHeader.biPlanes = bmpInfo.bmPlanes;
lpbi->bmiHeader.biBitCount = bmpInfo.bmBitsPixel;
lpbi->bmiHeader.biCompression = BI_RGB; // 0
lpbi->bmiHeader.biSizeImage = bmpInfo.bmWidthBytes * bmpInfo.bmHeight;
lpbi->bmiHeader.biXPelsPerMeter = 0;
lpbi->bmiHeader.biYPelsPerMeter = 0;
lpbi->bmiHeader.biClrUsed = 0;
lpbi->bmiHeader.biClrImportant = 0;
if (lpbi->bmiHeader.biBitCount == 1) {
// Need to set this or else the mask is inverted.
lpbi->bmiHeader.biClrUsed = 2;
lpbi->bmiHeader.biClrImportant = 2;
lpbi->bmiColors[0].rgbRed = lpbi->bmiColors[0].rgbGreen =
lpbi->bmiColors[0].rgbBlue = lpbi->bmiColors[0].rgbReserved = 0;
lpbi->bmiColors[1].rgbRed = lpbi->bmiColors[1].rgbGreen =
lpbi->bmiColors[1].rgbBlue = lpbi->bmiColors[1].rgbReserved = 255;
}
if (lpvBits == NULL)
return bmpInfo.bmHeight;
// We just want to pull out the image bits, but Windows CE makes
// this stupidly difficult to do...
HBITMAP hTargetBitmap;
void *pBuffer;
HDC someDC = ::GetDC(NULL);
hTargetBitmap = ::CreateDIBSection(someDC, lpbi, DIB_RGB_COLORS,
(void**)&pBuffer, NULL, 0);
::ReleaseDC(NULL, someDC);
HDC memDc = ::CreateCompatibleDC(NULL);
HDC targetDc = ::CreateCompatibleDC(NULL);
if (!memDc || !targetDc)
return 0;
HBITMAP hOldMemBitmap = (HBITMAP)::SelectObject(memDc, hbmp);
HBITMAP hOldTgtBitmap = (HBITMAP)::SelectObject(targetDc, hTargetBitmap);
// BitBlt into the target bitmap, then copy the bits into our buffer.
::BitBlt(targetDc, 0, 0, bmpInfo.bmWidth, bmpInfo.bmHeight, memDc, 0, 0, SRCCOPY);
memcpy(lpvBits, pBuffer, lpbi->bmiHeader.biSizeImage);
// Cleanup
::SelectObject(memDc, hOldMemBitmap);
::SelectObject(targetDc, hOldTgtBitmap);
::DeleteDC(memDc);
::DeleteDC(targetDc);
::DeleteObject(hTargetBitmap);
return bmpInfo.bmHeight;
}
#endif
nsresult nsIconChannel::MakeInputStream(nsIInputStream** _retval, PRBool nonBlocking)
{
// Check whether the icon requested's a file icon or a stock icon
nsresult rv = NS_ERROR_NOT_AVAILABLE;
// GetDIBits does not exist on windows mobile.
#ifndef WINCE_WINDOWS_MOBILE
HICON hIcon = NULL;
#if MOZ_WINSDK_TARGETVER >= MOZ_NTDDI_LONGHORN
nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(mUrl, &rv));
NS_ENSURE_SUCCESS(rv, rv);
nsCAutoString stockIcon;
iconURI->GetStockIcon(stockIcon);
if (!stockIcon.IsEmpty())
rv = GetStockHIcon(iconURI, &hIcon);
else
#endif
rv = GetHIconFromFile(&hIcon);
NS_ENSURE_SUCCESS(rv, rv);
if (hIcon)
{
// we got a handle to an icon. Now we want to get a bitmap for the icon using GetIconInfo....
ICONINFO iconInfo;
if (GetIconInfo(hIcon, &iconInfo))
{
// we got the bitmaps, first find out their size
HDC hDC = CreateCompatibleDC(NULL); // get a device context for the screen.
BITMAPINFO maskInfo = {{sizeof(BITMAPINFOHEADER)}};
BITMAPINFO colorInfo = {{sizeof(BITMAPINFOHEADER)}};
if (GetDIBits(hDC, iconInfo.hbmMask, 0, 0, NULL, &maskInfo, DIB_RGB_COLORS) &&
GetDIBits(hDC, iconInfo.hbmColor, 0, 0, NULL, &colorInfo, DIB_RGB_COLORS) &&
maskInfo.bmiHeader.biHeight == colorInfo.bmiHeader.biHeight &&
maskInfo.bmiHeader.biWidth == colorInfo.bmiHeader.biWidth &&
colorInfo.bmiHeader.biBitCount > 8 &&
colorInfo.bmiHeader.biSizeImage > 0 &&
maskInfo.bmiHeader.biSizeImage > 0) {
PRUint32 iconSize = sizeof(ICONFILEHEADER) +
sizeof(ICONENTRY) +
sizeof(BITMAPINFOHEADER) +
colorInfo.bmiHeader.biSizeImage +
maskInfo.bmiHeader.biSizeImage;
char *buffer = new char[iconSize];
if (!buffer)
rv = NS_ERROR_OUT_OF_MEMORY;
else {
char *whereTo = buffer;
int howMuch;
// the data starts with an icon file header
ICONFILEHEADER iconHeader;
iconHeader.ifhReserved = 0;
iconHeader.ifhType = 1;
iconHeader.ifhCount = 1;
howMuch = sizeof(ICONFILEHEADER);
memcpy(whereTo, &iconHeader, howMuch);
whereTo += howMuch;
// followed by the single icon entry
ICONENTRY iconEntry;
iconEntry.ieWidth = colorInfo.bmiHeader.biWidth;
iconEntry.ieHeight = colorInfo.bmiHeader.biHeight;
iconEntry.ieColors = 0;
iconEntry.ieReserved = 0;
iconEntry.iePlanes = 1;
iconEntry.ieBitCount = colorInfo.bmiHeader.biBitCount;
iconEntry.ieSizeImage = sizeof(BITMAPINFOHEADER) +
colorInfo.bmiHeader.biSizeImage +
maskInfo.bmiHeader.biSizeImage;
iconEntry.ieFileOffset = sizeof(ICONFILEHEADER) + sizeof(ICONENTRY);
howMuch = sizeof(ICONENTRY);
memcpy(whereTo, &iconEntry, howMuch);
whereTo += howMuch;
// followed by the bitmap info header
// (doubling the height because icons have two bitmaps)
colorInfo.bmiHeader.biHeight *= 2;
colorInfo.bmiHeader.biSizeImage += maskInfo.bmiHeader.biSizeImage;
howMuch = sizeof(BITMAPINFOHEADER);
memcpy(whereTo, &colorInfo.bmiHeader, howMuch);
whereTo += howMuch;
colorInfo.bmiHeader.biHeight /= 2;
colorInfo.bmiHeader.biSizeImage -= maskInfo.bmiHeader.biSizeImage;
// followed by the bitmap data
if (GetDIBits(hDC, iconInfo.hbmColor, 0,
colorInfo.bmiHeader.biHeight, whereTo,
&colorInfo, DIB_RGB_COLORS)) {
whereTo += colorInfo.bmiHeader.biSizeImage;
if (GetDIBits(hDC, iconInfo.hbmMask, 0,
maskInfo.bmiHeader.biHeight, whereTo,
&maskInfo, DIB_RGB_COLORS)) {
// Now, create a pipe and stuff our data into it
nsCOMPtr<nsIInputStream> inStream;
nsCOMPtr<nsIOutputStream> outStream;
rv = NS_NewPipe(getter_AddRefs(inStream), getter_AddRefs(outStream),
iconSize, iconSize, nonBlocking);
if (NS_SUCCEEDED(rv)) {
PRUint32 written;
rv = outStream->Write(buffer, iconSize, &written);
if (NS_SUCCEEDED(rv)) {
NS_ADDREF(*_retval = inStream);
}
}
} // if we got bitmap bits
} // if we got mask bits
delete [] buffer;
} // if we allocated the buffer
} // if we got mask size
DeleteDC(hDC);
DeleteObject(iconInfo.hbmColor);
DeleteObject(iconInfo.hbmMask);
} // if we got icon info
DestroyIcon(hIcon);
} // if we got an hIcon
// If we didn't make a stream, then fail.
if (!*_retval && NS_SUCCEEDED(rv))
rv = NS_ERROR_NOT_AVAILABLE;
#endif
return rv;
}
NS_IMETHODIMP nsIconChannel::GetContentType(nsACString &aContentType)
{
aContentType.AssignLiteral("image/x-icon");
return NS_OK;
}
NS_IMETHODIMP
nsIconChannel::SetContentType(const nsACString &aContentType)
{
// It doesn't make sense to set the content-type on this type
// of channel...
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsIconChannel::GetContentCharset(nsACString &aContentCharset)
{
aContentCharset.Truncate();
return NS_OK;
}
NS_IMETHODIMP
nsIconChannel::SetContentCharset(const nsACString &aContentCharset)
{
// It doesn't make sense to set the content-charset on this type
// of channel...
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP nsIconChannel::GetContentLength(PRInt64 *aContentLength)
{
*aContentLength = mContentLength;
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::SetContentLength(PRInt64 aContentLength)
{
NS_NOTREACHED("nsIconChannel::SetContentLength");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP nsIconChannel::GetOwner(nsISupports* *aOwner)
{
*aOwner = mOwner.get();
NS_IF_ADDREF(*aOwner);
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::SetOwner(nsISupports* aOwner)
{
mOwner = aOwner;
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::GetNotificationCallbacks(nsIInterfaceRequestor* *aNotificationCallbacks)
{
*aNotificationCallbacks = mCallbacks.get();
NS_IF_ADDREF(*aNotificationCallbacks);
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::SetNotificationCallbacks(nsIInterfaceRequestor* aNotificationCallbacks)
{
mCallbacks = aNotificationCallbacks;
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::GetSecurityInfo(nsISupports * *aSecurityInfo)
{
*aSecurityInfo = nsnull;
return NS_OK;
}
// nsIRequestObserver methods
NS_IMETHODIMP nsIconChannel::OnStartRequest(nsIRequest* aRequest, nsISupports* aContext)
{
if (mListener)
return mListener->OnStartRequest(this, aContext);
return NS_OK;
}
NS_IMETHODIMP nsIconChannel::OnStopRequest(nsIRequest* aRequest, nsISupports* aContext, nsresult aStatus)
{
if (mListener) {
mListener->OnStopRequest(this, aContext, aStatus);
mListener = nsnull;
}
// Remove from load group
if (mLoadGroup)
mLoadGroup->RemoveRequest(this, nsnull, aStatus);
// Drop notification callbacks to prevent cycles.
mCallbacks = nsnull;
return NS_OK;
}
// nsIStreamListener methods
NS_IMETHODIMP nsIconChannel::OnDataAvailable(nsIRequest* aRequest,
nsISupports* aContext,
nsIInputStream* aStream,
PRUint32 aOffset,
PRUint32 aCount)
{
if (mListener)
return mListener->OnDataAvailable(this, aContext, aStream, aOffset, aCount);
return NS_OK;
}
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