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140fc306071600e6def5f858dafec7691e8bb959
Mozilla/mozilla/widget/src/windows/nsFilePicker.cpp
yokoyama%netscape.com 140fc30607 Bug 162362 
making unicode mozilla to run under Win9x OS.
Should have no impact on the current build
setting (only when #ifdef MOZ_UNICODE on)
and only gets compiled in Windows platform.
/r=shanjian, /sr=kin, /a=rjesup@wgate.com


git-svn-id: svn://10.0.0.236/trunk@129119 18797224-902f-48f8-a5cc-f745e15eee43
2002-09-09 23:58:39 +00:00

823 lines
25 KiB
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Raw Blame History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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 the Mozilla browser.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 2000 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Stuart Parmenter <pavlov@netscape.com>
* Seth Spitzer <sspitzer@netscape.com>
*/
// Define so header files for openfilename are included
#ifdef WIN32_LEAN_AND_MEAN
#undef WIN32_LEAN_AND_MEAN
#endif
#include "nsCOMPtr.h"
#include "nsReadableUtils.h"
#include "nsNetUtil.h"
#include "nsIServiceManager.h"
#include "nsIPlatformCharset.h"
#include "nsFilePicker.h"
#include "nsILocalFile.h"
#include "nsIURL.h"
#include "nsIFileURL.h"
#include "nsIStringBundle.h"
#include "nsEnumeratorUtils.h"
#include "nsCRT.h"
#include <windows.h>
#include <SHLOBJ.H>
#ifdef MOZ_UNICODE
#include "nsString.h"
#include "nsToolkit.h"
#endif // MOZ_UNICODE
static NS_DEFINE_CID(kCharsetConverterManagerCID, NS_ICHARSETCONVERTERMANAGER_CID);
NS_IMPL_ISUPPORTS1(nsFilePicker, nsIFilePicker)
#ifdef MOZ_UNICODE
nsString nsFilePicker::mLastUsedUnicodeDirectory;
#endif
char nsFilePicker::mLastUsedDirectory[MAX_PATH+1] = { 0 };
#define MAX_EXTENSION_LENGTH 10
//-------------------------------------------------------------------------
//
// nsFilePicker constructor
//
//-------------------------------------------------------------------------
nsFilePicker::nsFilePicker()
{
NS_INIT_ISUPPORTS();
mWnd = NULL;
mUnicodeEncoder = nsnull;
mUnicodeDecoder = nsnull;
mSelectedType = 1;
mDisplayDirectory = do_CreateInstance("@mozilla.org/file/local;1");
}
//-------------------------------------------------------------------------
//
// nsFilePicker destructor
//
//-------------------------------------------------------------------------
nsFilePicker::~nsFilePicker()
{
NS_IF_RELEASE(mUnicodeEncoder);
NS_IF_RELEASE(mUnicodeDecoder);
}
//-------------------------------------------------------------------------
//
// Show - Display the file dialog
//
//-------------------------------------------------------------------------
#ifdef MOZ_UNICODE
NS_IMETHODIMP nsFilePicker::ShowW(PRInt16 *aReturnVal)
{
NS_ENSURE_ARG_POINTER(aReturnVal);
PRBool result = PR_FALSE;
PRUnichar fileBuffer[MAX_PATH+1];
wcsncpy(fileBuffer, mDefault.get(), MAX_PATH);
nsAutoString htmExt(NS_LITERAL_STRING("html"));
PRUnichar *title = ToNewUnicode(mTitle);
nsAutoString initialDir;
mDisplayDirectory->GetPath(initialDir);
// If no display directory, re-use the last one.
if(initialDir.IsEmpty()) {
// Allocate copy of last used dir.
initialDir = mLastUsedUnicodeDirectory;
}
mUnicodeFile.SetLength(0);
if (mMode == modeGetFolder) {
PRUnichar dirBuffer[MAX_PATH+1];
wcsncpy(dirBuffer, initialDir.get(), MAX_PATH);
BROWSEINFOW browserInfo;
browserInfo.hwndOwner = mWnd;
browserInfo.pidlRoot = nsnull;
browserInfo.pszDisplayName = (LPWSTR)dirBuffer;
browserInfo.lpszTitle = title;
browserInfo.ulFlags = BIF_RETURNONLYFSDIRS;//BIF_STATUSTEXT | BIF_RETURNONLYFSDIRS;
browserInfo.lpfn = nsnull;
browserInfo.lParam = nsnull;
browserInfo.iImage = nsnull;
// XXX UNICODE support is needed here --> DONE
LPITEMIDLIST list = ::SHBrowseForFolderW(&browserInfo);
if (list != NULL) {
result = ::SHGetPathFromIDListW(list, (LPWSTR)fileBuffer);
if (result) {
mUnicodeFile.Append(fileBuffer);
}
// free PIDL
LPMALLOC pMalloc = NULL;
::SHGetMalloc(&pMalloc);
if(pMalloc) {
pMalloc->Free(list);
pMalloc->Release();
}
}
}
else {
OPENFILENAMEW ofn;
memset(&ofn, 0, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
nsString filterBuffer = mFilterList;
if (!initialDir.IsEmpty()) {
ofn.lpstrInitialDir = initialDir.get();
}
ofn.lpstrTitle = (LPCWSTR)title;
ofn.lpstrFilter = (LPCWSTR)filterBuffer.get();
ofn.nFilterIndex = mSelectedType;
ofn.hwndOwner = mWnd;
ofn.lpstrFile = fileBuffer;
ofn.nMaxFile = MAX_PATH;
ofn.Flags = OFN_NOCHANGEDIR | OFN_SHAREAWARE | OFN_LONGNAMES | OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY;
if (!mDefaultExtension.IsEmpty()) {
ofn.lpstrDefExt = mDefaultExtension.get();
}
else {
// Get file extension from suggested filename
// to detect if we are saving an html file
//XXX: nsIFile SHOULD HAVE A GetExtension() METHOD!
PRInt32 extIndex = mDefault.RFind(".");
if ( extIndex >= 0) {
nsAutoString ext;
mDefault.Right(ext, mDefault.Length() - extIndex);
// Should we test for ".cgi", ".asp", ".jsp" and other
// "generated" html pages?
if ( ext.EqualsIgnoreCase(".htm") ||
ext.EqualsIgnoreCase(".html") ||
ext.EqualsIgnoreCase(".shtml") ) {
// This is supposed to append ".htm" if user doesn't supply an extension
//XXX Actually, behavior is sort of weird:
// often appends ".html" even if you have an extension
// It obeys your extension if you put quotes around name
ofn.lpstrDefExt = htmExt.get();
}
}
}
if (mMode == modeOpen) {
// FILE MUST EXIST!
ofn.Flags |= OFN_FILEMUSTEXIST;
result = nsToolkit::mGetOpenFileName(&ofn);
}
else if (mMode == modeSave) {
ofn.Flags |= OFN_NOREADONLYRETURN;
result = nsToolkit::mGetSaveFileName(&ofn);
if (!result) {
// Error, find out what kind.
if (::GetLastError() == ERROR_INVALID_PARAMETER ||
::CommDlgExtendedError() == FNERR_INVALIDFILENAME) {
// probably the default file name is too long or contains illegal characters!
// Try again, without a starting file name.
ofn.lpstrFile[0] = 0;
result = nsToolkit::mGetSaveFileName(&ofn);
}
}
}
else {
NS_ASSERTION(0, "Only load, save and getFolder are supported modes");
}
// Remember what filter type the user selected
mSelectedType = (PRInt16)ofn.nFilterIndex;
// Set user-selected location of file or directory
if (result == PR_TRUE) {
// I think it also needs a conversion here (to unicode since appending to nsString)
// but doing that generates garbage file name, weird.
mUnicodeFile.Append(fileBuffer);
}
}
if (title)
nsMemory::Free( title );
if (result) {
PRInt16 returnOKorReplace = returnOK;
// Remember last used directory.
nsCOMPtr<nsILocalFile> file(do_CreateInstance("@mozilla.org/file/local;1"));
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
// work around. InitWithPath() will convert UCS2 to FS path !!! corrupts unicode
file->InitWithPath(mUnicodeFile);
nsCOMPtr<nsIFile> dir;
if (NS_SUCCEEDED(file->GetParent(getter_AddRefs(dir)))) {
nsCOMPtr<nsILocalFile> localDir(do_QueryInterface(dir));
if (localDir) {
nsAutoString newDir;
localDir->GetPath(newDir);
if(!newDir.IsEmpty())
mLastUsedUnicodeDirectory.Assign(newDir);
// Update mDisplayDirectory with this directory, also.
// Some callers rely on this.
mDisplayDirectory->InitWithPath(mLastUsedUnicodeDirectory);
}
}
if (mMode == modeSave) {
// Windows does not return resultReplace,
// we must check if file already exists
PRBool exists = PR_FALSE;
file->Exists(&exists);
if (exists)
returnOKorReplace = returnReplace;
}
*aReturnVal = returnOKorReplace;
}
else {
*aReturnVal = returnCancel;
}
return NS_OK;
}
#endif
NS_IMETHODIMP nsFilePicker::Show(PRInt16 *aReturnVal)
#ifdef MOZ_UNICODE
{
return ShowW(aReturnVal);
}
#else
{
NS_ENSURE_ARG_POINTER(aReturnVal);
PRBool result = PR_FALSE;
char fileBuffer[MAX_PATH+1] = "";
char *converted = ConvertToFileSystemCharset(mDefault.get());
if (nsnull == converted) {
mDefault.ToCString(fileBuffer,MAX_PATH);
}
else {
PL_strncpyz(fileBuffer, converted, MAX_PATH+1);
nsMemory::Free( converted );
}
char htmExt[] = "html";
char *title = ConvertToFileSystemCharset(mTitle.get());
if (nsnull == title)
title = ToNewCString(mTitle);
nsCAutoString initialDir;
mDisplayDirectory->GetNativePath(initialDir);
// If no display directory, re-use the last one.
if(initialDir.IsEmpty()) {
// Allocate copy of last used dir.
initialDir = mLastUsedDirectory;
}
mFile.SetLength(0);
if (mMode == modeGetFolder) {
char dirBuffer[MAX_PATH+1];
PL_strncpy(dirBuffer, initialDir.get(), MAX_PATH);
BROWSEINFO browserInfo;
browserInfo.hwndOwner = mWnd;
browserInfo.pidlRoot = nsnull;
browserInfo.pszDisplayName = (LPSTR)dirBuffer;
browserInfo.lpszTitle = title;
browserInfo.ulFlags = BIF_RETURNONLYFSDIRS;//BIF_STATUSTEXT | BIF_RETURNONLYFSDIRS;
browserInfo.lpfn = nsnull;
browserInfo.lParam = nsnull;
browserInfo.iImage = nsnull;
// XXX UNICODE support is needed here --> DONE
LPITEMIDLIST list = ::SHBrowseForFolder(&browserInfo);
if (list != NULL) {
result = ::SHGetPathFromIDList(list, (LPSTR)fileBuffer);
if (result) {
mFile.Append(fileBuffer);
}
// free PIDL
LPMALLOC pMalloc = NULL;
::SHGetMalloc(&pMalloc);
if(pMalloc) {
pMalloc->Free(list);
pMalloc->Release();
}
}
}
else {
OPENFILENAME ofn;
memset(&ofn, 0, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
char extensionBuffer[MAX_EXTENSION_LENGTH+1] = "";
PRInt32 l = (mFilterList.Length()+2)*2;
char *filterBuffer = (char*) nsMemory::Alloc(l);
int len = WideCharToMultiByte(CP_ACP, 0,
mFilterList.get(),
mFilterList.Length(),
filterBuffer,
l, NULL, NULL);
filterBuffer[len] = '\0';
filterBuffer[len+1] = '\0';
if (!initialDir.IsEmpty()) {
ofn.lpstrInitialDir = initialDir.get();
}
ofn.lpstrTitle = title;
ofn.lpstrFilter = filterBuffer;
ofn.nFilterIndex = mSelectedType;
ofn.hwndOwner = mWnd;
ofn.lpstrFile = fileBuffer;
ofn.nMaxFile = MAX_PATH;
ofn.Flags = OFN_NOCHANGEDIR | OFN_SHAREAWARE | OFN_LONGNAMES | OFN_OVERWRITEPROMPT | OFN_HIDEREADONLY;
if (!mDefaultExtension.IsEmpty()) {
// Someone was cool and told us what to do
char *convertedExt = ConvertToFileSystemCharset(mDefaultExtension.get());
if (!convertedExt) {
mDefaultExtension.ToCString(extensionBuffer, MAX_EXTENSION_LENGTH);
}
else {
PL_strncpyz(extensionBuffer, convertedExt, MAX_EXTENSION_LENGTH+1);
nsMemory::Free( convertedExt );
}
ofn.lpstrDefExt = extensionBuffer;
}
else {
// Get file extension from suggested filename
// to detect if we are saving an html file
//XXX: nsIFile SHOULD HAVE A GetExtension() METHOD!
PRInt32 extIndex = mDefault.RFind(".");
if ( extIndex >= 0) {
nsAutoString ext;
mDefault.Right(ext, mDefault.Length() - extIndex);
// Should we test for ".cgi", ".asp", ".jsp" and other
// "generated" html pages?
if ( ext.EqualsIgnoreCase(".htm") ||
ext.EqualsIgnoreCase(".html") ||
ext.EqualsIgnoreCase(".shtml") ) {
// This is supposed to append ".htm" if user doesn't supply an extension
//XXX Actually, behavior is sort of weird:
// often appends ".html" even if you have an extension
// It obeys your extension if you put quotes around name
ofn.lpstrDefExt = htmExt;
}
}
}
if (mMode == modeOpen) {
// FILE MUST EXIST!
ofn.Flags |= OFN_FILEMUSTEXIST;
result = ::GetOpenFileName(&ofn);
}
else if (mMode == modeOpenMultiple) {
ofn.Flags |= OFN_FILEMUSTEXIST | OFN_ALLOWMULTISELECT | OFN_EXPLORER;
result = ::GetOpenFileName(&ofn);
}
else if (mMode == modeSave) {
ofn.Flags |= OFN_NOREADONLYRETURN;
result = ::GetSaveFileName(&ofn);
if (!result) {
// Error, find out what kind.
if (::GetLastError() == ERROR_INVALID_PARAMETER ||
::CommDlgExtendedError() == FNERR_INVALIDFILENAME) {
// probably the default file name is too long or contains illegal characters!
// Try again, without a starting file name.
ofn.lpstrFile[0] = 0;
result = ::GetSaveFileName(&ofn);
}
}
}
else {
NS_ASSERTION(0, "Only load, save and getFolder are supported modes");
}
// Remember what filter type the user selected
mSelectedType = (PRInt16)ofn.nFilterIndex;
// Clean up filter buffers
if (filterBuffer)
nsMemory::Free( filterBuffer );
// Set user-selected location of file or directory
if (result == PR_TRUE) {
// I think it also needs a conversion here (to unicode since appending to nsString)
// but doing that generates garbage file name, weird.
if (mMode == modeOpenMultiple) {
nsresult rv = NS_NewISupportsArray(getter_AddRefs(mFiles));
NS_ENSURE_SUCCESS(rv,rv);
// from msdn.microsoft.com, "Open and Save As Dialog Boxes" section:
// If you specify OFN_EXPLORER,
// The directory and file name strings are NULL separated,
// with an extra NULL character after the last file name.
// This format enables the Explorer-style dialog boxes
// to return long file names that include spaces.
char *current = fileBuffer;
const char *dirName = current;
while (current && *current && *(current + strlen(current) + 1)) {
current = current + strlen(current) + 1;
nsCOMPtr<nsILocalFile> file = do_CreateInstance("@mozilla.org/file/local;1", &rv);
NS_ENSURE_SUCCESS(rv,rv);
// dirName contains a trailing slash
rv = file->InitWithNativePath(nsDependentCString(dirName) + nsDependentCString(current));
NS_ENSURE_SUCCESS(rv,rv);
rv = mFiles->AppendElement(file);
NS_ENSURE_SUCCESS(rv,rv);
}
// handle the case where the user selected just one
// file. according to msdn.microsoft.com:
// If you specify OFN_ALLOWMULTISELECT and the user selects
// only one file, the lpstrFile string does not have
// a separator between the path and file name.
if (current && *current && (current == fileBuffer)) {
nsCOMPtr<nsILocalFile> file = do_CreateInstance("@mozilla.org/file/local;1", &rv);
NS_ENSURE_SUCCESS(rv,rv);
rv = file->InitWithNativePath(nsDependentCString(current));
NS_ENSURE_SUCCESS(rv,rv);
rv = mFiles->AppendElement(file);
NS_ENSURE_SUCCESS(rv,rv);
}
}
else {
mFile.Append(fileBuffer);
}
}
}
if (title)
nsMemory::Free( title );
if (result) {
PRInt16 returnOKorReplace = returnOK;
// Remember last used directory.
nsCOMPtr<nsILocalFile> file(do_CreateInstance("@mozilla.org/file/local;1"));
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
file->InitWithNativePath(mFile);
nsCOMPtr<nsIFile> dir;
if (NS_SUCCEEDED(file->GetParent(getter_AddRefs(dir)))) {
nsCOMPtr<nsILocalFile> localDir(do_QueryInterface(dir));
if (localDir) {
nsCAutoString newDir;
localDir->GetNativePath(newDir);
if(!newDir.IsEmpty())
PL_strncpyz(mLastUsedDirectory, newDir.get(), MAX_PATH+1);
// Update mDisplayDirectory with this directory, also.
// Some callers rely on this.
mDisplayDirectory->InitWithNativePath( nsDependentCString(mLastUsedDirectory) );
}
}
if (mMode == modeSave) {
// Windows does not return resultReplace,
// we must check if file already exists
PRBool exists = PR_FALSE;
file->Exists(&exists);
if (exists)
returnOKorReplace = returnReplace;
}
*aReturnVal = returnOKorReplace;
}
else {
*aReturnVal = returnCancel;
}
return NS_OK;
}
#endif
NS_IMETHODIMP nsFilePicker::GetFile(nsILocalFile **aFile)
{
NS_ENSURE_ARG_POINTER(aFile);
#ifdef MOZ_UNICODE
if (mUnicodeFile.IsEmpty())
return NS_OK;
#else
if (mFile.IsEmpty())
return NS_OK;
#endif
nsCOMPtr<nsILocalFile> file(do_CreateInstance("@mozilla.org/file/local;1"));
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
#ifdef MOZ_UNICODE
file->InitWithPath(mUnicodeFile);
#else
file->InitWithNativePath(mFile);
#endif
NS_ADDREF(*aFile = file);
return NS_OK;
}
//-------------------------------------------------------------------------
NS_IMETHODIMP nsFilePicker::GetFileURL(nsIFileURL **aFileURL)
{
nsCOMPtr<nsILocalFile> file(do_CreateInstance("@mozilla.org/file/local;1"));
NS_ENSURE_TRUE(file, NS_ERROR_FAILURE);
#ifdef MOZ_UNICODE
file->InitWithPath(mUnicodeFile);
#else
file->InitWithNativePath(mFile);
#endif
nsCOMPtr<nsIURI> uri;
NS_NewFileURI(getter_AddRefs(uri), file);
nsCOMPtr<nsIFileURL> fileURL(do_QueryInterface(uri));
NS_ENSURE_TRUE(fileURL, NS_ERROR_FAILURE);
NS_ADDREF(*aFileURL = fileURL);
return NS_OK;
}
NS_IMETHODIMP nsFilePicker::GetFiles(nsISimpleEnumerator **aFiles)
{
NS_ENSURE_ARG_POINTER(aFiles);
return NS_NewArrayEnumerator(aFiles, mFiles);
}
//-------------------------------------------------------------------------
//
// Get the file + path
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsFilePicker::SetDefaultString(const PRUnichar *aString)
{
mDefault = aString;
//First, make sure the file name is not too long!
PRInt32 nameLength;
PRInt32 nameIndex = mDefault.RFind("\\");
if (nameIndex == kNotFound)
nameIndex = 0;
else
nameIndex ++;
nameLength = mDefault.Length() - nameIndex;
if (nameLength > _MAX_FNAME) {
PRInt32 extIndex = mDefault.RFind(".");
if (extIndex == kNotFound)
extIndex = mDefault.Length();
//Let's try to shave the needed characters from the name part
PRInt32 charsToRemove = nameLength - _MAX_FNAME;
if (extIndex - nameIndex >= charsToRemove) {
mDefault.Cut(extIndex - charsToRemove, charsToRemove);
}
}
//Then, we need to replace illegal characters.
//At this stage, we cannot replace the backslash as the string might represent a file path.
mDefault.ReplaceChar(FILE_ILLEGAL_CHARACTERS, '-');
return NS_OK;
}
NS_IMETHODIMP nsFilePicker::GetDefaultString(PRUnichar **aString)
{
return NS_ERROR_FAILURE;
}
//-------------------------------------------------------------------------
//
// The default extension to use for files
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsFilePicker::GetDefaultExtension(PRUnichar **aExtension)
{
*aExtension = ToNewUnicode(mDefaultExtension);
if (!*aExtension)
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP nsFilePicker::SetDefaultExtension(const PRUnichar *aExtension)
{
mDefaultExtension = aExtension;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Set the filter index
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsFilePicker::GetFilterIndex(PRInt32 *aFilterIndex)
{
// Windows' filter index is 1-based, we use a 0-based system.
*aFilterIndex = mSelectedType - 1;
return NS_OK;
}
NS_IMETHODIMP nsFilePicker::SetFilterIndex(PRInt32 aFilterIndex)
{
// Windows' filter index is 1-based, we use a 0-based system.
mSelectedType = aFilterIndex + 1;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Set the display directory
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsFilePicker::SetDisplayDirectory(nsILocalFile *aDirectory)
{
mDisplayDirectory = aDirectory;
return NS_OK;
}
//-------------------------------------------------------------------------
//
// Get the display directory
//
//-------------------------------------------------------------------------
NS_IMETHODIMP nsFilePicker::GetDisplayDirectory(nsILocalFile **aDirectory)
{
*aDirectory = mDisplayDirectory;
NS_IF_ADDREF(*aDirectory);
return NS_OK;
}
//-------------------------------------------------------------------------
NS_IMETHODIMP nsFilePicker::InitNative(nsIWidget *aParent,
const PRUnichar *aTitle,
PRInt16 aMode)
{
mWnd = (HWND) ((aParent) ? aParent->GetNativeData(NS_NATIVE_WINDOW) : 0);
mTitle.SetLength(0);
mTitle.Append(aTitle);
mMode = aMode;
return NS_OK;
}
//-------------------------------------------------------------------------
void nsFilePicker::GetFileSystemCharset(nsString & fileSystemCharset)
{
static nsAutoString aCharset;
nsresult rv;
if (aCharset.Length() < 1) {
nsCOMPtr <nsIPlatformCharset> platformCharset = do_GetService(NS_PLATFORMCHARSET_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv))
rv = platformCharset->GetCharset(kPlatformCharsetSel_FileName, aCharset);
NS_ASSERTION(NS_SUCCEEDED(rv), "error getting platform charset");
if (NS_FAILED(rv))
aCharset.Assign(NS_LITERAL_STRING("windows-1252"));
}
fileSystemCharset = aCharset;
}
//-------------------------------------------------------------------------
char * nsFilePicker::ConvertToFileSystemCharset(const PRUnichar *inString)
{
char *outString = nsnull;
nsresult rv = NS_OK;
// get file system charset and create a unicode encoder
if (nsnull == mUnicodeEncoder) {
nsAutoString fileSystemCharset;
GetFileSystemCharset(fileSystemCharset);
nsCOMPtr<nsICharsetConverterManager> ccm =
do_GetService(kCharsetConverterManagerCID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = ccm->GetUnicodeEncoder(&fileSystemCharset, &mUnicodeEncoder);
}
}
// converts from unicode to the file system charset
if (NS_SUCCEEDED(rv)) {
PRInt32 inLength = nsCRT::strlen(inString);
PRInt32 outLength;
rv = mUnicodeEncoder->GetMaxLength(inString, inLength, &outLength);
if (NS_SUCCEEDED(rv)) {
outString = NS_STATIC_CAST( char*, nsMemory::Alloc( outLength+1 ) );
if (nsnull == outString) {
return nsnull;
}
rv = mUnicodeEncoder->Convert(inString, &inLength, outString, &outLength);
if (NS_SUCCEEDED(rv)) {
outString[outLength] = '\0';
}
}
}
return NS_SUCCEEDED(rv) ? outString : nsnull;
}
//-------------------------------------------------------------------------
PRUnichar * nsFilePicker::ConvertFromFileSystemCharset(const char *inString)
{
PRUnichar *outString = nsnull;
nsresult rv = NS_OK;
// get file system charset and create a unicode encoder
if (nsnull == mUnicodeDecoder) {
nsAutoString fileSystemCharset;
GetFileSystemCharset(fileSystemCharset);
nsCOMPtr<nsICharsetConverterManager> ccm =
do_GetService(kCharsetConverterManagerCID, &rv);
if (NS_SUCCEEDED(rv)) {
rv = ccm->GetUnicodeDecoder(&fileSystemCharset, &mUnicodeDecoder);
}
}
// converts from the file system charset to unicode
if (NS_SUCCEEDED(rv)) {
PRInt32 inLength = strlen(inString);
PRInt32 outLength;
rv = mUnicodeDecoder->GetMaxLength(inString, inLength, &outLength);
if (NS_SUCCEEDED(rv)) {
outString = NS_STATIC_CAST( PRUnichar*, nsMemory::Alloc( (outLength+1) * sizeof( PRUnichar ) ) );
if (nsnull == outString) {
return nsnull;
}
rv = mUnicodeDecoder->Convert(inString, &inLength, outString, &outLength);
if (NS_SUCCEEDED(rv)) {
outString[outLength] = 0;
}
}
}
NS_ASSERTION(NS_SUCCEEDED(rv), "error charset conversion");
return NS_SUCCEEDED(rv) ? outString : nsnull;
}
NS_IMETHODIMP
nsFilePicker::AppendFilter(const PRUnichar *aTitle, const PRUnichar *aFilter)
{
mFilterList.Append(aTitle);
mFilterList.Append(PRUnichar('\0'));
if (!nsCRT::strcmp(aFilter, NS_LITERAL_STRING("..apps").get()))
mFilterList.Append(NS_LITERAL_STRING("*.exe;*.com"));
else
{
nsString filter;
filter.Assign(aFilter);
filter.StripWhitespace();
if (filter.Equals(NS_LITERAL_STRING("*")))
filter.Append(NS_LITERAL_STRING(".*"));
mFilterList.Append(filter);
}
mFilterList.Append(PRUnichar('\0'));
return NS_OK;
}
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