os x and linux dialog path remember through executions

Telegram/SourceFiles/gui/filedialog.cpp

@@ -19,6 +19,7 @@ Copyright (c) 2014 John Preston, https://desktop.telegram.org
 #include "gui/filedialog.h"
 
 #include "application.h"
+#include "localstorage.h"
 
 void filedialogInit() {
 	if (cDialogLastPath().isEmpty()) {
@@ -67,13 +68,22 @@ void filedialogInit() {
 
 // multipleFiles: 1 - multi open, 0 - single open, -1 - single save, -2 - select dir
 bool _filedialogGetFiles(QStringList &files, QByteArray &remoteContent, const QString &caption, const QString &filter, int multipleFiles, QString startFile = QString()) {
+
+	filedialogInit();
+
 #if defined Q_OS_LINUX || defined Q_OS_MAC // use native
     remoteContent = QByteArray();
+	if (startFile.isEmpty() || startFile.at(0) != '/') {
+		startFile = cDialogLastPath() + '/' + startFile;
+	}
     QString file;
     if (multipleFiles >= 0) {
 		files = QFileDialog::getOpenFileNames(App::wnd() ? App::wnd()->filedialogParent() : 0, caption, startFile, filter);
 		QString path = files.isEmpty() ? QString() : QFileInfo(files.back()).absoluteDir().absolutePath();
-		if (!path.isEmpty()) cSetDialogLastPath(path);
+		if (!path.isEmpty() && path != cDialogLastPath()) {
+			cSetDialogLastPath(path);
+			Local::writeUserSettings();
+		}
         return !files.isEmpty();
     } else if (multipleFiles < -1) {
 		file = QFileDialog::getExistingDirectory(App::wnd() ? App::wnd()->filedialogParent() : 0, caption);
@@ -87,14 +97,15 @@ bool _filedialogGetFiles(QStringList &files, QByteArray &remoteContent, const QS
         return false;
     } else {
 		QString path = QFileInfo(file).absoluteDir().absolutePath();
-		if (!path.isEmpty()) cSetDialogLastPath(path);
+		if (!path.isEmpty() && path != cDialogLastPath()) {
+			cSetDialogLastPath(path);
+			Local::writeUserSettings();
+		}
         files = QStringList(file);
         return true;
     }
 #endif
 
-    filedialogInit();
-
 	// hack for fast non-native dialog create
 	QFileDialog dialog(App::wnd() ? App::wnd()->filedialogParent() : 0, caption, cDialogHelperPathFinal(), filter);
 
@@ -130,7 +141,11 @@ bool _filedialogGetFiles(QStringList &files, QByteArray &remoteContent, const QS
 
 	int res = dialog.exec();
 
-	cSetDialogLastPath(dialog.directory().absolutePath());
+	QString path = dialog.directory().absolutePath();
+	if (path != cDialogLastPath()) {
+		cSetDialogLastPath(path);
+		Local::writeUserSettings();
+	}
 	
 	if (res == QDialog::Accepted) {
 		if (multipleFiles > 0) {

Telegram/SourceFiles/history.cpp

@@ -431,7 +431,11 @@ QString saveFileName(const QString &title, const QString &filter, const QString
 		if (!name.isEmpty() && name.at(0) == QChar::fromLatin1('.')) {
 			name = filedialogDefaultName(prefix, name);
 		} else if (dir.path() != qsl(".")) {
-			cSetDialogLastPath(dir.absolutePath());
+			QString path = dir.absolutePath();
+			if (path != cDialogLastPath()) {
+				cSetDialogLastPath(path);
+				Local::writeUserSettings();
+			}
 		}
 
 		return filedialogGetSaveFile(name, title, filter, name) ? name : QString();

Telegram/SourceFiles/localstorage.cpp

@@ -920,6 +920,14 @@ namespace {
 			cSetRecentEmojisPreload(v);
 		} break;
 
+		case dbiDialogLastPath: {
+			QString path;
+			stream >> path;
+			if (!_checkStreamStatus(stream)) return false;
+
+			cSetDialogLastPath(path);
+		} break;
+
 		default:
 			LOG(("App Error: unknown blockId in _readSetting: %1").arg(blockId));
 			return false;
@@ -1130,6 +1138,7 @@ namespace {
 		uint32 size = 11 * (sizeof(quint32) + sizeof(qint32));
 		size += sizeof(quint32) + _stringSize(cAskDownloadPath() ? QString() : cDownloadPath());
 		size += sizeof(quint32) + sizeof(qint32) + cGetRecentEmojis().size() * (sizeof(uint32) + sizeof(ushort));
+		size += sizeof(quint32) + _stringSize(cDialogLastPath());
 
 		EncryptedDescriptor data(size);
 		data.stream << quint32(dbiSendKey) << qint32(cCtrlEnter() ? dbiskCtrlEnter : dbiskEnter);
@@ -1144,6 +1153,7 @@ namespace {
 		data.stream << quint32(dbiDownloadPath) << (cAskDownloadPath() ? QString() : cDownloadPath());
 		data.stream << quint32(dbiCompressPastedImage) << qint32(cCompressPastedImage());
 		data.stream << quint32(dbiEmojiTab) << qint32(cEmojiTab());
+		data.stream << quint32(dbiDialogLastPath) << cDialogLastPath();
 
 		RecentEmojiPreload v;
 		v.reserve(cGetRecentEmojis().size());

Telegram/SourceFiles/types.h

@@ -259,6 +259,7 @@ enum DataBlockId {
 	dbiLangFile = 32,
 	dbiTileBackground = 33,
 	dbiAutoLock = 34,
+	dbiDialogLastPath = 35,
 
 	dbiEncryptedWithSalt = 333,
 	dbiEncrypted = 444,