WIN32: Add DialogManager with system file browser support

2 files changed, 181 insertions, 0 deletions

diff --git a/backends/dialogs/win32/win32-dialogs.cpp b/backends/dialogs/win32/win32-dialogs.cpp
new file mode 100644
index 0000000000..b7d41cfa01
--- /dev/null
+++ b/backends/dialogs/win32/win32-dialogs.cpp
@@ -0,0 +1,136 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#if defined(WIN32) && defined(USE_SYSDIALOGS)
+
+// Disable symbol overrides so that we can use system headers.
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include <windows.h>
+#include <shlobj.h>
+#if defined(ARRAYSIZE)
+#undef ARRAYSIZE
+#endif
+
+#include "common/scummsys.h"
+
+#include "backends/dialogs/win32/win32-dialogs.h"
+#include "backends/platform/sdl/win32/win32_wrapper.h"
+#include "backends/platform/sdl/win32/win32-window.h"
+
+#include "common/config-manager.h"
+#include "common/system.h"
+#include "common/events.h"
+#include "common/translation.h"
+
+Win32DialogManager::Win32DialogManager(SdlWindow_Win32 *window) : _window(window) {
+	CoInitialize(NULL);
+}
+
+Win32DialogManager::~Win32DialogManager() {
+	CoUninitialize();
+}
+
+Common::DialogManager::DialogResult Win32DialogManager::showFileBrowser(const char *title, Common::FSNode &choice, bool isDirBrowser) {
+	DialogResult result = kDialogError;
+
+	// Do nothing if not running on Windows Vista or later
+	if (!Win32::confirmWindowsVersion(6, 0))
+		return result;
+
+	IFileOpenDialog *dialog = NULL;
+	HRESULT hr = CoCreateInstance(CLSID_FileOpenDialog,
+	                              NULL,
+	                              CLSCTX_INPROC_SERVER,
+	                              IID_PPV_ARGS(&dialog));
+
+	if (SUCCEEDED(hr)) {
+		// If in fullscreen mode, switch to windowed mode
+		bool wasFullscreen = g_system->getFeatureState(OSystem::kFeatureFullscreenMode);
+		if (wasFullscreen) {
+			g_system->beginGFXTransaction();
+			g_system->setFeatureState(OSystem::kFeatureFullscreenMode, false);
+			g_system->endGFXTransaction();
+		}
+
+		// Customize dialog
+		bool showHidden = ConfMan.getBool("gui_browser_show_hidden", Common::ConfigManager::kApplicationDomain);
+
+		DWORD dwOptions;
+		hr = dialog->GetOptions(&dwOptions);
+		if (SUCCEEDED(hr)) {
+			if (isDirBrowser)
+				dwOptions |= FOS_PICKFOLDERS;
+			if (showHidden)
+				dwOptions |= FOS_FORCESHOWHIDDEN;
+			hr = dialog->SetOptions(dwOptions);
+		}
+
+		LPWSTR str = Win32::ansiToUnicode(title);
+		hr = dialog->SetTitle(str);
+		delete[] str;
+
+		str = Win32::ansiToUnicode(_("Choose"));
+		hr = dialog->SetOkButtonLabel(str);
+		delete[] str;
+
+		// Show dialog
+		hr = dialog->Show(_window->getHwnd());
+
+		if (SUCCEEDED(hr)) {
+			IShellItem *selectedItem = NULL;
+			LPWSTR path = NULL;
+
+			// Get the selection from the user
+			hr = dialog->GetResult(&selectedItem);
+
+			if (SUCCEEDED(hr)) {
+				hr = selectedItem->GetDisplayName(SIGDN_FILESYSPATH, &path);
+
+				if (SUCCEEDED(hr)) {
+					char *str = Win32::unicodeToAnsi(path);
+					choice = Common::FSNode(str);
+					result = kDialogOk;
+					CoTaskMemFree(path);
+					delete[] str;
+				}
+
+				selectedItem->Release();
+			}
+		} else if (hr == HRESULT_FROM_WIN32(ERROR_CANCELLED)) {
+			result = kDialogCancel;
+		}
+
+		dialog->Release();
+
+		// If we were in fullscreen mode, switch back
+		if (wasFullscreen) {
+			g_system->beginGFXTransaction();
+			g_system->setFeatureState(OSystem::kFeatureFullscreenMode, true);
+			g_system->endGFXTransaction();
+		}
+	}
+
+	return result;
+}
+
+#endif
diff --git a/backends/dialogs/win32/win32-dialogs.h b/backends/dialogs/win32/win32-dialogs.h
new file mode 100644
index 0000000000..32454bd67f
--- /dev/null
+++ b/backends/dialogs/win32/win32-dialogs.h
@@ -0,0 +1,45 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#ifndef BACKEND_WIN32_DIALOGS_H
+#define BACKEND_WIN32_DIALOGS_H
+
+#if defined(WIN32) && defined(USE_SYSDIALOGS)
+
+#include "common/fs.h"
+#include "common/dialogs.h"
+
+class SdlWindow_Win32;
+
+class Win32DialogManager : public Common::DialogManager {
+public:
+	Win32DialogManager(SdlWindow_Win32 *window);
+	virtual ~Win32DialogManager();
+	virtual DialogResult showFileBrowser(const char *title, Common::FSNode &choice, bool isDirBrowser);
+
+private:
+	SdlWindow_Win32 *_window;
+};
+
+#endif
+
+#endif // BACKEND_WIN32_DIALOGS_H