зеркало из https://github.com/mozilla/gecko-dev.git
Bug 156422 Win32's nsILocalFile.reveal() doesn't select file p=dean_tessman r=law (tweaked by brofield@jellycan.com r=me) sr=alecf
This commit is contained in:
neil%parkwaycc.co.uk
Родитель
f7bc60ff82
Коммит
f3b448e4ef
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@ -22,6 +22,7 @@
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*
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* Contributor(s):
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* Doug Turner <dougt@netscape.com>
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* Dean Tessman <dean_tessman@hotmail.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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@ -68,6 +69,7 @@
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#include "nsITimelineService.h"
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#include "nsAutoLock.h"
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#include "SpecialSystemDirectory.h"
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// _mbsstr isn't declared in w32api headers but it's there in the libs
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#ifdef __MINGW32__
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@ -2167,178 +2169,36 @@ nsLocalFile::SetPersistentDescriptor(const nsACString &aPersistentDescriptor)
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NS_IMETHODIMP
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nsLocalFile::Reveal()
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{
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nsresult rv = NS_OK;
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PRBool isDirectory = PR_FALSE;
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nsCAutoString path;
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nsAutoString unicodePath;
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// make sure mResolvedPath is set
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nsresult rv = ResolveAndStat(PR_TRUE);
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if (NS_FAILED(rv) && rv != NS_ERROR_FILE_NOT_FOUND)
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return rv;
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IsDirectory(&isDirectory);
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if (isDirectory)
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{
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GetNativePath(path);
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}
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else
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{
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nsCOMPtr<nsIFile> parent;
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GetParent(getter_AddRefs(parent));
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if (parent)
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{
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parent->GetNativePath(path);
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parent->GetPath(unicodePath);
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}
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}
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// use the full path to explorer for security
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nsCOMPtr<nsILocalFile> winDir;
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rv = GetSpecialSystemDirectory(Win_WindowsDirectory, getter_AddRefs(winDir));
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NS_ENSURE_SUCCESS(rv, rv);
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nsCAutoString explorerPath;
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rv = winDir->GetNativePath(explorerPath);
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NS_ENSURE_SUCCESS(rv, rv);
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explorerPath.Append("\\explorer.exe");
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// Remember the current fg window.
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HWND origWin, fgWin;
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origWin = fgWin = ::GetForegroundWindow();
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// Always open a new window for files because Win2K doesn't appear to select
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// the file if a window showing that folder was already open. If the resolved
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// path is a directory then instead of opening the parent and selecting it,
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// we open the directory itself.
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nsCAutoString explorerParams;
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if (mFileInfo64.type != PR_FILE_DIRECTORY) // valid because we ResolveAndStat above
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explorerParams.Append("/n,/select,");
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explorerParams.Append('\"');
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explorerParams.Append(mResolvedPath);
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explorerParams.Append('\"');
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// use the app registry name to launch a shell execute....
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LONG r = (LONG) ::ShellExecute( NULL, "open", path.get(), NULL, NULL, SW_SHOWNORMAL);
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if (r < 32)
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return NS_ERROR_FAILURE;
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// If this is a directory, then we don't need to select a file.
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if (isDirectory)
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if (::ShellExecute(NULL, "open", explorerPath.get(), explorerParams.get(),
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NULL, SW_SHOWNORMAL) <= (HINSTANCE) 32)
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return NS_ERROR_FAILURE;
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return NS_OK;
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// Resources we may need to free when done.
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IShellFolder *desktopFolder = 0;
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IMalloc *shellMalloc = 0;
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IShellFolder *folder = 0;
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LPITEMIDLIST folder_pidl = 0;
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LPITEMIDLIST file_pidl = 0;
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LPITEMIDLIST win95_file_pidl = 0;
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HMODULE shell32 = 0;
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// We break out of this do/while non-loop at any point where we have to give up.
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do {
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// Wait for the window to open. We wait a maximum of 2 seconds.
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// If we get the wrong window, that will be dealt with below.
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for (int iter = 10; iter; iter--)
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{
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fgWin = ::GetForegroundWindow();
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if (fgWin != origWin)
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break; // for loopo
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::Sleep(200);
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}
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// If we failed to locate the new window, give up.
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if (origWin == fgWin)
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break; // do/while
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// Now we have the explorer window. We need to send it the "select item"
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// message (which isn't trivial, so buckly your seat belt)...
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// We need the explorer's process id.
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DWORD pid = 0;
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::GetWindowThreadProcessId(fgWin, &pid);
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// Get desktop folder.
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HRESULT rc = ::SHGetDesktopFolder(&desktopFolder);
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if (!desktopFolder)
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break;
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// Get IMalloc interface to use for shell pidls.
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rc = ::SHGetMalloc(&shellMalloc);
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if (!shellMalloc)
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break;
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// Convert folder path to pidl. This requires the Unicode path name.
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// It returns a pidl that must be freed via shellMalloc->Free.
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ULONG eaten = 0;
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rc = desktopFolder->ParseDisplayName( 0,
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0,
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(LPOLESTR)unicodePath.get(),
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&eaten,
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&folder_pidl,
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0 );
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if (!folder_pidl)
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break;
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// Now get IShellFolder interface for the folder we opened.
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rc = desktopFolder->BindToObject( folder_pidl,
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0,
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IID_IShellFolder,
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(void**)&folder );
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if (!folder)
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break;
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// Now get file name pidl from that folder.
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nsAutoString unicodeLeaf;
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if (NS_FAILED(GetLeafName(unicodeLeaf)))
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break;
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rc = folder->ParseDisplayName( 0,
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0,
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(LPOLESTR)unicodeLeaf.get(),
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&eaten,
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&file_pidl,
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0 );
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if (!file_pidl)
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break;
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// We need the module handle for shell32.dll.
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shell32 = ::GetModuleHandle("shell32.dll");
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if (!shell32)
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break;
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// Allocate shared memory copy of pidl. This uses the undocumented "SHAllocShared"
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// function. Note that it is freed automatically after the ::SendMessage so we
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// don't have to free it.
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static HANDLE(WINAPI*SHAllocShared)(LPVOID,ULONG,DWORD) = (HANDLE(WINAPI*)(LPVOID,ULONG,DWORD))::GetProcAddress(shell32, (LPCTSTR)520);
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HANDLE pidlHandle = 0;
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if (SHAllocShared)
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{
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// We need the size of the pidl, which we get via another undocumented
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// API: "ILGetSize".
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UINT (WINAPI*ILGetSize)(LPCITEMIDLIST) = (UINT(WINAPI*)(LPCITEMIDLIST))::GetProcAddress(shell32, (LPCTSTR)152);
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if (!ILGetSize)
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break;
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pidlHandle = SHAllocShared((void*)(ITEMIDLIST*)file_pidl,
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ILGetSize(file_pidl),
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pid);
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if (!pidlHandle)
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break;
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}
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else
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{
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// On Win95, there is no SHAllocShared. Instead, we clone the file's pidl in
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// the shell's global heap (via ILGlobalClone) and pass that.
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LPITEMIDLIST(WINAPI*ILGlobalClone)(LPCITEMIDLIST) = (LPITEMIDLIST(WINAPI*)(LPCITEMIDLIST))::GetProcAddress(shell32, (LPCTSTR)20);
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if (!ILGlobalClone)
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break;
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win95_file_pidl = ILGlobalClone(file_pidl);
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if (!win95_file_pidl)
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break;
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// Arrange so that this pidl is passed on the ::SendMessage.
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pidlHandle = win95_file_pidl;
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}
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// Send message to select this file.
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::SendMessage(fgWin,
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WM_USER+5,
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SVSI_SELECT | SVSI_DESELECTOTHERS | SVSI_ENSUREVISIBLE,
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(LPARAM)pidlHandle );
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} while ( PR_FALSE );
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// Clean up (freeing stuff as needed, in reverse order).
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if (win95_file_pidl)
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{
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// We need to free this using ILGlobalFree, another undocumented API.
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static void (WINAPI*ILGlobalFree)(LPCITEMIDLIST) = (void(WINAPI*)(LPCITEMIDLIST))::GetProcAddress(shell32,(LPCTSTR)156);
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if (ILGlobalFree)
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ILGlobalFree(win95_file_pidl);
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}
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if (file_pidl)
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shellMalloc->Free(file_pidl);
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if (folder_pidl)
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shellMalloc->Free(folder_pidl);
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if (folder)
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folder->Release();
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if (shellMalloc)
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shellMalloc->Release();
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if (desktopFolder)
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desktopFolder->Release();
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return rv;
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}
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