BBVS: Implement file chooser for Air Guitar minigame

gui/filebrowser-dialog.cpp

@@ -0,0 +1,160 @@
+/* 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.
+ *
+ */
+
+#include "gui/filebrowser-dialog.h"
+
+#include "common/system.h"
+#include "common/algorithm.h"
+#include "common/savefile.h"
+#include "common/str-array.h"
+
+#include "common/translation.h"
+
+#include "gui/widgets/list.h"
+#include "gui/message.h"
+
+namespace GUI {
+
+enum {
+	kChooseCmd = 'Chos'
+};
+
+FileBrowserDialog::FileBrowserDialog(const char *title, const char *fileExtension, int mode)
+	: Dialog("FileBrowser"), _mode(mode), _fileExt(fileExtension) {
+
+	_fileMask = "*.";
+	_fileMask += fileExtension;
+	_fileList = NULL;
+
+	new StaticTextWidget(this, "FileBrowser.Headline", title ? title :
+					mode == kFBModeLoad ? _("Choose file for loading") : _("Enter filename for saving"));
+
+	_fileName = new EditTextWidget(this, "FileBrowser.Filename", "");
+
+	if (mode == kFBModeLoad)
+		_fileName->setEnabled(false);
+
+	// Add file list
+	_fileList = new ListWidget(this, "FileBrowser.List");
+	_fileList->setNumberingMode(kListNumberingOff);
+	_fileList->setEditable(false);
+
+	_backgroundType = GUI::ThemeEngine::kDialogBackgroundPlain;
+
+	// Buttons
+	new ButtonWidget(this, "FileBrowser.Cancel", _("Cancel"), 0, kCloseCmd);
+	new ButtonWidget(this, "FileBrowser.Choose", _("Choose"), 0, kChooseCmd);
+}
+
+void FileBrowserDialog::open() {
+	// Call super implementation
+	Dialog::open();
+
+	updateListing();
+}
+
+void FileBrowserDialog::handleCommand(CommandSender *sender, uint32 cmd, uint32 data) {
+	switch (cmd) {
+	case kChooseCmd:
+		if (_fileName->getEditString().empty())
+			break;
+
+		normalieFileName();
+
+		if (!isProceedSave())
+			break;
+
+		setResult(1);
+		close();
+		break;
+	case kListSelectionChangedCmd:
+		_fileName->setEditString(_fileList->getList().operator[](_fileList->getSelected()).c_str());
+		_fileName->draw();
+		break;
+	case kListItemActivatedCmd:
+	case kListItemDoubleClickedCmd:
+		normalieFileName();
+
+		if (!isProceedSave())
+			break;
+
+		setResult(1);
+		close();
+		break;
+	default:
+		Dialog::handleCommand(sender, cmd, data);
+	}
+}
+
+void FileBrowserDialog::normalieFileName() {
+	Common::String filename = _fileName->getEditString();
+
+	if (filename.matchString(_fileMask))
+		return;
+
+	_fileName->setEditString(filename + "." + _fileExt);
+}
+
+
+bool FileBrowserDialog::isProceedSave() {
+	bool matched = false;
+
+	if (_mode == kFBModeLoad)
+		return true;
+
+	for (ListWidget::StringArray::const_iterator file = _fileList->getList().begin(); file != _fileList->getList().end(); ++file) {
+		if (*file == _fileName->getEditString()) {
+			matched = true;
+			break;
+		}
+	}
+
+	if (matched) {
+		GUI::MessageDialog alert(_("Do you really want to overwrite the file?"), _("Yes"), _("No"));
+
+		if (alert.runModal() != GUI::kMessageOK)
+			return false;
+	}
+
+	return true;
+}
+
+void FileBrowserDialog::updateListing() {
+	Common::SaveFileManager *saveFileMan = g_system->getSavefileManager();
+
+	ListWidget::StringArray list;
+
+	Common::StringArray filenames = saveFileMan->listSavefiles(_fileMask);
+	Common::sort(filenames.begin(), filenames.end());
+
+	for (Common::StringArray::const_iterator file = filenames.begin(); file != filenames.end(); ++file) {
+		list.push_back(file->c_str());
+	}
+
+	_fileList->setList(list);
+	_fileList->scrollTo(0);
+
+	// Finally, redraw
+	draw();
+}
+
+} // End of namespace GUI