void CMusikFileDialog::OnFileNameChange()
{
TCHAR dummy_buffer;
// Get the required size for the 'files' buffer
UINT nfiles = CommDlg_OpenSave_GetSpec( GetParent()->m_hWnd, &dummy_buffer, 1 );
// Get the required size for the 'folder' buffer
UINT nfolder = CommDlg_OpenSave_GetFolderPath( GetParent()->m_hWnd, &dummy_buffer, 1 );
// Check if lpstrFile and nMaxFile are large enough
if ( nfiles + nfolder > m_ofn.nMaxFile )
{
m_bParsed = FALSE;
// files
if ( m_pstrFiles )
delete[] m_pstrFiles;
m_pstrFiles = new TCHAR[nfiles + 1];
CommDlg_OpenSave_GetSpec( GetParent()->m_hWnd, m_pstrFiles, nfiles );
// folder
if ( m_pstrFolder )
delete[] m_pstrFolder;
m_pstrFolder = new TCHAR[nfolder + 1];
CommDlg_OpenSave_GetFolderPath( GetParent()->m_hWnd, m_pstrFolder, nfolder );
}
else if ( m_pstrFiles )
CleanStrings();
CFileDialog::OnFileNameChange();
}
static UINT_PTR CALLBACK
FileDialogHookProc(HWND hdlg, UINT uiMsg, WPARAM wParam, LPARAM lParam)
{
JNIEnv *env = (JNIEnv *)JNU_GetEnv(jvm, JNI_VERSION_1_2);
TRY;
HWND parent = ::GetParent(hdlg);
switch(uiMsg) {
case WM_INITDIALOG: {
OPENFILENAME *ofn = (OPENFILENAME *)lParam;
jobject peer = (jobject)(ofn->lCustData);
env->CallVoidMethod(peer, AwtFileDialog::setHWndMID,
(jlong)parent);
::SetProp(parent, ModalDialogPeerProp, reinterpret_cast<HANDLE>(peer));
// fix for 4508670 - disable CS_SAVEBITS
DWORD style = ::GetClassLong(hdlg,GCL_STYLE);
::SetClassLong(hdlg,GCL_STYLE,style & ~CS_SAVEBITS);
// set appropriate icon for parentless dialogs
jobject awtParent = env->GetObjectField(peer, AwtFileDialog::parentID);
if (awtParent == NULL) {
::SendMessage(parent, WM_SETICON, (WPARAM)ICON_BIG,
(LPARAM)AwtToolkit::GetInstance().GetAwtIcon());
} else {
env->DeleteLocalRef(awtParent);
}
// subclass dialog's parent to receive additional messages
WNDPROC lpfnWndProc = ComCtl32Util::GetInstance().SubclassHWND(parent,
FileDialogWndProc);
::SetProp(parent, NativeDialogWndProcProp, reinterpret_cast<HANDLE>(lpfnWndProc));
::SetProp(parent, OpenFileNameProp, (void *)lParam);
break;
}
case WM_DESTROY: {
WNDPROC lpfnWndProc = (WNDPROC)(::GetProp(parent, NativeDialogWndProcProp));
ComCtl32Util::GetInstance().UnsubclassHWND(parent,
FileDialogWndProc,
lpfnWndProc);
::RemoveProp(parent, ModalDialogPeerProp);
::RemoveProp(parent, NativeDialogWndProcProp);
::RemoveProp(parent, OpenFileNameProp);
break;
}
case WM_NOTIFY: {
OFNOTIFYEX *notifyEx = (OFNOTIFYEX *)lParam;
if (notifyEx) {
jobject peer = (jobject)(::GetProp(parent, ModalDialogPeerProp));
if (notifyEx->hdr.code == CDN_INCLUDEITEM) {
LPITEMIDLIST pidl = (LPITEMIDLIST)notifyEx->pidl;
// Get the filename and directory
TCHAR szPath[MAX_PATH];
if (!::SHGetPathFromIDList(pidl, szPath)) {
return TRUE;
}
jstring strPath = JNU_NewStringPlatform(env, szPath);
// Call FilenameFilter.accept with path and filename
UINT uRes = (env->CallBooleanMethod(peer,
AwtFileDialog::checkFilenameFilterMID, strPath) == JNI_TRUE);
env->DeleteLocalRef(strPath);
return uRes;
} else if (notifyEx->hdr.code == CDN_FILEOK) {
// This notification is sent when user selects some file and presses
// OK button; it is not sent when no file is selected. So it's time
// to unblock all the windows blocked by this dialog as it will
// be closed soon
env->CallVoidMethod(peer, AwtFileDialog::setHWndMID, (jlong)0);
} else if (notifyEx->hdr.code == CDN_SELCHANGE) {
// reallocate the buffer if the buffer is too small
LPOPENFILENAME lpofn = (LPOPENFILENAME)GetProp(parent, OpenFileNameProp);
UINT nLength = CommDlg_OpenSave_GetSpec(parent, NULL, 0) +
CommDlg_OpenSave_GetFolderPath(parent, NULL, 0);
if (lpofn->nMaxFile < nLength)
{
// allocate new buffer
LPTSTR newBuffer = new TCHAR[nLength];
if (newBuffer) {
memset(newBuffer, 0, nLength * sizeof(TCHAR));
LPTSTR oldBuffer = lpofn->lpstrFile;
lpofn->lpstrFile = newBuffer;
lpofn->nMaxFile = nLength;
// free the previously allocated buffer
if (oldBuffer) {
delete[] oldBuffer;
}
}
}
}
}
break;
}
}
return FALSE;
CATCH_BAD_ALLOC_RET(TRUE);
}
