move vconfig to a local variable

src/dialog/vdeletenotebookdialog.cpp

@@ -2,7 +2,7 @@
 #include "vdeletenotebookdialog.h"
 #include "vconfigmanager.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VDeleteNotebookDialog::VDeleteNotebookDialog(const QString &p_title, const QString &p_name,
                                              const QString &p_path, QWidget *p_parent)
@@ -14,7 +14,7 @@ VDeleteNotebookDialog::VDeleteNotebookDialog(const QString &p_title, const QStri
 void VDeleteNotebookDialog::setupUI(const QString &p_title, const QString &p_name)
 {
     QLabel *infoLabel = new QLabel(tr("Are you sure to delete notebook <span style=\"%1\">%2</span>?")
-                                     .arg(vconfig.c_dataTextStyle).arg(p_name));
+                                     .arg(g_config->c_dataTextStyle).arg(p_name));
     m_warningLabel = new QLabel();
     m_warningLabel->setWordWrap(true);
 
@@ -109,12 +109,12 @@ void VDeleteNotebookDialog::deleteCheckChanged(int p_state)
 {
     if (!p_state) {
         m_warningLabel->setText(tr("VNote won't delete files in directory <span style=\"%1\">%2</span>.")
-                                  .arg(vconfig.c_dataTextStyle).arg(m_path));
+                                  .arg(g_config->c_dataTextStyle).arg(m_path));
     } else {
         m_warningLabel->setText(tr("<span style=\"%1\">WARNING</span>: "
                                    "VNote may delete <b>ANY</b> files in directory <span style=\"%2\">%3</span>! "
                                    "VNote will try to delete all the root folders within this notebook one by one. "
                                    "It may be UNRECOVERABLE!")
-                                  .arg(vconfig.c_warningTextStyle).arg(vconfig.c_dataTextStyle).arg(m_path));
+                                  .arg(g_config->c_warningTextStyle).arg(g_config->c_dataTextStyle).arg(m_path));
     }
 }

src/dialog/vnewnotebookdialog.cpp

@@ -5,7 +5,7 @@
 #include "utils/vutils.h"
 #include "vnotebook.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VNewNotebookDialog::VNewNotebookDialog(const QString &title, const QString &info,
                                        const QString &defaultName, const QString &defaultPath,
@@ -44,7 +44,7 @@ void VNewNotebookDialog::setupUI()
     QLabel *imageFolderLabel = new QLabel(tr("&Image folder:"));
     m_imageFolderEdit = new QLineEdit();
     m_imageFolderEdit->setPlaceholderText(tr("Use global configuration (%1)")
-                                            .arg(vconfig.getImageFolder()));
+                                            .arg(g_config->getImageFolder()));
     imageFolderLabel->setBuddy(m_imageFolderEdit);
     QString imageFolderTip = tr("Set the name of the folder for all the notes of this notebook to store images "
                                 "(empty to use global configuration)");
@@ -114,7 +114,7 @@ void VNewNotebookDialog::handleBrowseBtnClicked()
 {
     static QString defaultPath;
     if (defaultPath.isEmpty()) {
-        defaultPath = vconfig.getVnoteNotebookFolderPath();
+        defaultPath = g_config->getVnoteNotebookFolderPath();
         if (!QFileInfo::exists(defaultPath)) {
             defaultPath = QDir::homePath();
         }
@@ -146,7 +146,7 @@ void VNewNotebookDialog::handleInputChanged()
 {
     QString warnText = tr("<span style=\"%1\">WARNING</span>: The folder chosen is NOT empty! "
                           "It is highly recommended to use an EMPTY and EXCLUSIVE folder for a new notebook.")
-                          .arg(vconfig.c_warningTextStyle);
+                          .arg(g_config->c_warningTextStyle);
     QString infoText = tr("<span style=\"%1\">INFO</span>: The folder chosen seems to be a root "
                           "folder of a notebook created by VNote before. "
                           "VNote will try to import it by reading the configuration file.")
@@ -199,7 +199,7 @@ void VNewNotebookDialog::handleInputChanged()
             showWarnLabel = true;
             QString tmp = tr("<span style=\"%1\">WARNING</span>: The path seems to be illegal. "
                              "Please choose another one.")
-                            .arg(vconfig.c_warningTextStyle);
+                            .arg(g_config->c_warningTextStyle);
             m_warnLabel->setText(tmp);
         }
     }
@@ -218,8 +218,8 @@ void VNewNotebookDialog::handleInputChanged()
             showWarnLabel = true;
             QString existText = tr("<span style=\"%1\">WARNING</span>: The folder chosen has already been a root folder "
                                    "of existing notebook <span style=\"%2\">%3</span> in VNote.")
-                                   .arg(vconfig.c_warningTextStyle)
-                                   .arg(vconfig.c_dataTextStyle)
+                                   .arg(g_config->c_warningTextStyle)
+                                   .arg(g_config->c_dataTextStyle)
                                    .arg(m_notebooks[idx]->getName());
             m_warnLabel->setText(existText);
         }
@@ -242,7 +242,7 @@ void VNewNotebookDialog::handleInputChanged()
             showWarnLabel = true;
             QString nameConflictText = tr("<span style=\"%1\">WARNING</span>: Name (case-insensitive) already exists. "
                                           "Please choose another name.")
-                                          .arg(vconfig.c_warningTextStyle);
+                                          .arg(g_config->c_warningTextStyle);
             m_warnLabel->setText(nameConflictText);
         }
     }
@@ -261,7 +261,7 @@ bool VNewNotebookDialog::autoComplete()
         return false;
     }
 
-    QString vnoteFolder = vconfig.getVnoteNotebookFolderPath();
+    QString vnoteFolder = g_config->getVnoteNotebookFolderPath();
     QString pathText = pathEdit->text();
     if (!pathText.isEmpty()
         && !VUtils::equalPath(vnoteFolder, VUtils::basePathFromPath(pathText))) {

src/dialog/vnotebookinfodialog.cpp

@@ -4,7 +4,7 @@
 #include "utils/vutils.h"
 #include "vconfigmanager.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VNotebookInfoDialog::VNotebookInfoDialog(const QString &p_title,
                                          const QString &p_info,
@@ -41,7 +41,7 @@ void VNotebookInfoDialog::setupUI(const QString &p_title, const QString &p_info)
     QLabel *imageFolderLabel = new QLabel(tr("&Image folder:"));
     m_imageFolderEdit = new QLineEdit(m_notebook->getImageFolderConfig());
     m_imageFolderEdit->setPlaceholderText(tr("Use global configuration (%1)")
-                                            .arg(vconfig.getImageFolder()));
+                                            .arg(g_config->getImageFolder()));
     imageFolderLabel->setBuddy(m_imageFolderEdit);
     QString imageFolderTip = tr("Set the name of the folder for all the notes of this notebook to store images "
                                 "(empty to use global configuration)");
@@ -103,7 +103,7 @@ void VNotebookInfoDialog::handleInputChanged()
             showWarnLabel = true;
             QString nameConflictText = tr("<span style=\"%1\">WARNING</span>: Name (case-insensitive) already exists. "
                                           "Please choose another name.")
-                                          .arg(vconfig.c_warningTextStyle);
+                                          .arg(g_config->c_warningTextStyle);
             m_warnLabel->setText(nameConflictText);
         }
     }

src/dialog/vorphanfileinfodialog.cpp

@@ -5,7 +5,7 @@
 #include "vconfigmanager.h"
 #include "utils/vutils.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VOrphanFileInfoDialog::VOrphanFileInfoDialog(const VOrphanFile *p_file, QWidget *p_parent)
     : QDialog(p_parent), m_file(p_file)
@@ -28,7 +28,7 @@ void VOrphanFileInfoDialog::setupUI()
     QLabel *imageFolderLabel = new QLabel(tr("Image folder:"));
     m_imageFolderEdit = new QLineEdit(m_file->getImageFolder());
     m_imageFolderEdit->setPlaceholderText(tr("Use global configuration (%1)")
-                                            .arg(vconfig.getImageFolderExt()));
+                                            .arg(g_config->getImageFolderExt()));
     QString imgFolderTip = tr("Set the path of the image folder to store images "
                               "of this file.\nIf absolute path is used, "
                               "VNote will not manage those images."

src/dialog/vsettingsdialog.cpp

@@ -5,7 +5,7 @@
 #include "utils/vutils.h"
 #include "vconstants.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VSettingsDialog::VSettingsDialog(QWidget *p_parent)
     : QDialog(p_parent)
@@ -170,7 +170,7 @@ bool VGeneralTab::saveConfiguration()
 
 bool VGeneralTab::loadLanguage()
 {
-    QString lang = vconfig.getLanguage();
+    QString lang = g_config->getLanguage();
     if (lang.isNull()) {
         return false;
     } else if (lang == "System") {
@@ -196,20 +196,20 @@ bool VGeneralTab::loadLanguage()
 bool VGeneralTab::saveLanguage()
 {
     QString curLang = m_langCombo->currentData().toString();
-    vconfig.setLanguage(curLang);
+    g_config->setLanguage(curLang);
     return true;
 }
 
 bool VGeneralTab::loadSystemTray()
 {
-    m_systemTray->setChecked(vconfig.getMinimizeToStystemTray() != 0);
+    m_systemTray->setChecked(g_config->getMinimizeToStystemTray() != 0);
     return true;
 }
 
 bool VGeneralTab::saveSystemTray()
 {
     if (m_systemTray->isEnabled()) {
-        vconfig.setMinimizeToSystemTray(m_systemTray->isChecked() ? 1 : 0);
+        g_config->setMinimizeToSystemTray(m_systemTray->isChecked() ? 1 : 0);
     }
 
     return true;
@@ -264,8 +264,8 @@ bool VReadEditTab::saveConfiguration()
 
 bool VReadEditTab::loadWebZoomFactor()
 {
-    qreal factor = vconfig.getWebZoomFactor();
-    bool customFactor = vconfig.isCustomWebZoomFactor();
+    qreal factor = g_config->getWebZoomFactor();
+    bool customFactor = g_config->isCustomWebZoomFactor();
     if (customFactor) {
         if (factor < c_webZoomFactorMin || factor > c_webZoomFactorMax) {
             factor = 1;
@@ -283,9 +283,9 @@ bool VReadEditTab::loadWebZoomFactor()
 bool VReadEditTab::saveWebZoomFactor()
 {
     if (m_customWebZoom->isChecked()) {
-        vconfig.setWebZoomFactor(m_webZoomFactorSpin->value());
+        g_config->setWebZoomFactor(m_webZoomFactorSpin->value());
     } else {
-        vconfig.setWebZoomFactor(-1);
+        g_config->setWebZoomFactor(-1);
     }
     return true;
 }
@@ -381,10 +381,10 @@ bool VNoteManagementTab::saveConfiguration()
 
 bool VNoteManagementTab::loadImageFolder()
 {
-    bool isCustom = vconfig.isCustomImageFolder();
+    bool isCustom = g_config->isCustomImageFolder();
 
     m_customImageFolder->setChecked(isCustom);
-    m_imageFolderEdit->setText(vconfig.getImageFolder());
+    m_imageFolderEdit->setText(g_config->getImageFolder());
     m_imageFolderEdit->setEnabled(isCustom);
 
     return true;
@@ -393,9 +393,9 @@ bool VNoteManagementTab::loadImageFolder()
 bool VNoteManagementTab::saveImageFolder()
 {
     if (m_customImageFolder->isChecked()) {
-        vconfig.setImageFolder(m_imageFolderEdit->text());
+        g_config->setImageFolder(m_imageFolderEdit->text());
     } else {
-        vconfig.setImageFolder("");
+        g_config->setImageFolder("");
     }
 
     return true;
@@ -414,10 +414,10 @@ void VNoteManagementTab::customImageFolderChanged(int p_state)
 
 bool VNoteManagementTab::loadImageFolderExt()
 {
-    bool isCustom = vconfig.isCustomImageFolderExt();
+    bool isCustom = g_config->isCustomImageFolderExt();
 
     m_customImageFolderExt->setChecked(isCustom);
-    m_imageFolderEditExt->setText(vconfig.getImageFolderExt());
+    m_imageFolderEditExt->setText(g_config->getImageFolderExt());
     m_imageFolderEditExt->setEnabled(isCustom);
 
     return true;
@@ -426,9 +426,9 @@ bool VNoteManagementTab::loadImageFolderExt()
 bool VNoteManagementTab::saveImageFolderExt()
 {
     if (m_customImageFolderExt->isChecked()) {
-        vconfig.setImageFolderExt(m_imageFolderEditExt->text());
+        g_config->setImageFolderExt(m_imageFolderEditExt->text());
     } else {
-        vconfig.setImageFolderExt("");
+        g_config->setImageFolderExt("");
     }
 
     return true;

src/dialog/vupdater.cpp

@@ -8,7 +8,7 @@
 #include "vconfigmanager.h"
 #include "vdownloader.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VUpdater::VUpdater(QWidget *p_parent)
     : QDialog(p_parent)
@@ -24,7 +24,7 @@ void VUpdater::setupUI()
     imgLabel->setPixmap(QPixmap::fromImage(img.scaled(imgSize)));
 
     m_versionLabel = new QLabel(tr("Current Version: v%1")
-                                  .arg(vconfig.c_version));
+                                  .arg(g_config->c_version));
 
     m_proLabel = new QLabel(tr("Checking for updates..."));
     m_proLabel->setOpenExternalLinks(true);
@@ -156,8 +156,8 @@ void VUpdater::parseResult(const QByteArray &p_data)
     QString body = json["body"].toString();
 
     m_versionLabel->setText(tr("Current Version: v%1\nLatest Version: v%2")
-                              .arg(vconfig.c_version).arg(tag));
-    if (isNewerVersion(vconfig.c_version, tag)) {
+                              .arg(g_config->c_version).arg(tag));
+    if (isNewerVersion(g_config->c_version, tag)) {
         m_proLabel->setText(tr("<span style=\"font-weight: bold;\">Updates Available!</span><br/>"
                                "Please visit <a href=\"%1\">Github Releases</a> to download the latest version.")
                               .arg(releaseUrl));

src/hgmarkdownhighlighter.cpp

@@ -6,7 +6,7 @@
 #include "vconfigmanager.h"
 #include "utils/vutils.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 const int HGMarkdownHighlighter::initCapacity = 1024;
 
@@ -371,7 +371,7 @@ void HGMarkdownHighlighter::updateHighlight()
 
 bool HGMarkdownHighlighter::updateCodeBlocks()
 {
-    if (!vconfig.getEnableCodeBlockHighlight()) {
+    if (!g_config->getEnableCodeBlockHighlight()) {
         m_codeBlockHighlights.clear();
         return false;
     }

src/main.cpp

@@ -12,7 +12,7 @@
 #include "vsingleinstanceguard.h"
 #include "vconfigmanager.h"
 
-VConfigManager vconfig;
+VConfigManager *g_config;
 
 #if defined(QT_NO_DEBUG)
 QFile g_logFile;
@@ -143,7 +143,9 @@ int main(int argc, char *argv[])
         return 0;
     }
 
+    VConfigManager vconfig;
     vconfig.initialize();
+    g_config = &vconfig;
 
     QString locale = VUtils::getLocale();
     qDebug() << "use locale" << locale;

src/utils/vutils.cpp

@@ -24,7 +24,7 @@
 #include "vfile.h"
 #include "vnote.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 QVector<QPair<QString, QString>> VUtils::s_availableLanguages;
 
@@ -338,7 +338,7 @@ int VUtils::showMessage(QMessageBox::Icon p_icon, const QString &p_title, const
     if (p_type == MessageBoxType::Danger) {
         QPushButton *okBtn = dynamic_cast<QPushButton *>(msgBox.button(QMessageBox::Ok));
         if (okBtn) {
-            okBtn->setStyleSheet(vconfig.c_dangerBtnStyle);
+            okBtn->setStyleSheet(g_config->c_dangerBtnStyle);
         }
     }
     return msgBox.exec();
@@ -451,7 +451,7 @@ QChar VUtils::keyToChar(int p_key)
 
 QString VUtils::getLocale()
 {
-    QString locale = vconfig.getLanguage();
+    QString locale = g_config->getLanguage();
     if (locale == "System" || !isValidLanguage(locale)) {
         locale = QLocale::system().name();
     }
@@ -473,7 +473,7 @@ void VUtils::sleepWait(int p_milliseconds)
 
 DocType VUtils::docTypeFromName(const QString &p_name)
 {
-    const QHash<int, QList<QString>> &suffixes = vconfig.getDocSuffixes();
+    const QHash<int, QList<QString>> &suffixes = g_config->getDocSuffixes();
 
     QString suf = QFileInfo(p_name).suffix().toLower();
     for (auto it = suffixes.begin(); it != suffixes.end(); ++it) {
@@ -521,19 +521,19 @@ QString VUtils::generateHtmlTemplate(MarkdownConverterType p_conType, bool p_exp
         Q_ASSERT(false);
     }
 
-    if (vconfig.getEnableMermaid()) {
+    if (g_config->getEnableMermaid()) {
         extraFile += "<link rel=\"stylesheet\" type=\"text/css\" href=\"qrc" + VNote::c_mermaidCssFile + "\"/>\n" +
                      "<script src=\"qrc" + VNote::c_mermaidApiJsFile + "\"></script>\n" +
                      "<script>var VEnableMermaid = true;</script>\n";
     }
 
-    if (vconfig.getEnableFlowchart()) {
+    if (g_config->getEnableFlowchart()) {
         extraFile += "<script src=\"qrc" + VNote::c_raphaelJsFile + "\"></script>\n" +
                      "<script src=\"qrc" + VNote::c_flowchartJsFile + "\"></script>\n" +
                      "<script>var VEnableFlowchart = true;</script>\n";
     }
 
-    if (vconfig.getEnableMathjax()) {
+    if (g_config->getEnableMathjax()) {
         extraFile += "<script type=\"text/x-mathjax-config\">"
                      "MathJax.Hub.Config({\n"
                      "                    tex2jax: {inlineMath: [['$','$'], ['\\\\(','\\\\)']]},\n"
@@ -544,7 +544,7 @@ QString VUtils::generateHtmlTemplate(MarkdownConverterType p_conType, bool p_exp
                      "<script>var VEnableMathjax = true;</script>\n";
     }
 
-    if (vconfig.getEnableImageCaption()) {
+    if (g_config->getEnableImageCaption()) {
         extraFile += "<script>var VEnableImageCaption = true;</script>\n";
     }
 

src/utils/vvim.cpp

@@ -13,7 +13,7 @@
 #include "utils/veditutils.h"
 #include "vconstants.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 const QChar VVim::c_unnamedRegister = QChar('"');
 const QChar VVim::c_blackHoleRegister = QChar('_');
@@ -349,7 +349,7 @@ static void insertChangeBlockAfterDeletion(QTextCursor &p_cursor, int p_deletion
         p_cursor.movePosition(QTextCursor::PreviousBlock);
     }
 
-    if (vconfig.getAutoIndent()) {
+    if (g_config->getAutoIndent()) {
         VEditUtils::indentBlockAsPreviousBlock(p_cursor);
     }
 }
@@ -975,9 +975,9 @@ bool VVim::handleKeyPressEvent(int key, int modifiers, int *p_autoIndentPos)
                 }
 
                 bool textInserted = false;
-                if (vconfig.getAutoIndent()) {
+                if (g_config->getAutoIndent()) {
                     textInserted = VEditUtils::indentBlockAsPreviousBlock(cursor);
-                    if (vconfig.getAutoList()) {
+                    if (g_config->getAutoList()) {
                         textInserted = VEditUtils::insertListMarkAsPreviousBlock(cursor)
                                        || textInserted;
                     }
@@ -2239,7 +2239,7 @@ void VVim::setMode(VimMode p_mode, bool p_clearSelection)
 
         if (p_mode == VimMode::Insert) {
             m_editor->setInputMethodEnabled(true);
-        } else if (vconfig.getEnableSmartImInVimMode()) {
+        } else if (g_config->getEnableSmartImInVimMode()) {
             m_editor->setInputMethodEnabled(false);
         }
 

src/vconfigmanager.cpp

@@ -28,8 +28,8 @@ const QString VConfigManager::c_dangerBtnStyle = QString("QPushButton {color: #f
                                                          "QPushButton::hover {color: #fff; border-color: #ac2925; background-color: #c9302c;}");
 const QString VConfigManager::c_vnoteNotebookFolderName = QString("vnote_notebooks");
 
-VConfigManager::VConfigManager()
-    : userSettings(NULL), defaultSettings(NULL)
+VConfigManager::VConfigManager(QObject *p_parent)
+    : QObject(p_parent), userSettings(NULL), defaultSettings(NULL)
 {
 }
 
@@ -46,9 +46,10 @@ void VConfigManager::migrateIniFile()
 
 void VConfigManager::initialize()
 {
+    Q_ASSERT(!userSettings && !defaultSettings);
     userSettings = new QSettings(QSettings::IniFormat, QSettings::UserScope,
-                                 orgName, appName);
-    defaultSettings = new QSettings(defaultConfigFilePath, QSettings::IniFormat);
+                                 orgName, appName, this);
+    defaultSettings = new QSettings(defaultConfigFilePath, QSettings::IniFormat, this);
 
     migrateIniFile();
 

src/vconfigmanager.h

@@ -1,6 +1,7 @@
 #ifndef VCONFIGMANAGER_H
 #define VCONFIGMANAGER_H
 
+#include <QObject>
 #include <QFont>
 #include <QPalette>
 #include <QVector>
@@ -27,15 +28,10 @@ struct VColor
     QString rgb; // 'FFFFFF', without '#'
 };
 
-// FIXME: we do not free userSettings and defaultSettings here since there will
-// be only one global instance of VConfigManager. Freeing them in the destructor
-// causes crash in macOS.
-// One solution is to make the global variable a pointer, which causes too many
-// modifications. For now, we just choose the simple way.
-class VConfigManager
+class VConfigManager : public QObject
 {
 public:
-    VConfigManager();
+    explicit VConfigManager(QObject *p_parent = NULL);
 
     void initialize();
 

src/vdirectory.cpp

@@ -7,7 +7,7 @@
 #include "vfile.h"
 #include "utils/vutils.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VDirectory::VDirectory(VNotebook *p_notebook,
                        const QString &p_name, QObject *p_parent)
@@ -551,7 +551,7 @@ VFile *VDirectory::copyFile(VDirectory *p_destDir, const QString &p_destName,
                 ret = VUtils::makePath(destImagePath);
                 if (!ret) {
                     errStr = tr("Fail to create image folder <span style=\"%1\">%2</span>.")
-                               .arg(vconfig.c_dataTextStyle).arg(destImagePath);
+                               .arg(g_config->c_dataTextStyle).arg(destImagePath);
                 } else {
                     destImagePath = QDir(destImagePath).filePath(VUtils::fileNameFromPath(link.m_path));
 
@@ -570,7 +570,7 @@ VFile *VDirectory::copyFile(VDirectory *p_destDir, const QString &p_destName,
                     } else {
                         errStr = tr("Please check if there already exists a file <span style=\"%1\">%2</span> "
                                     "and then manually copy it and modify the note accordingly.")
-                                   .arg(vconfig.c_dataTextStyle).arg(destImagePath);
+                                   .arg(g_config->c_dataTextStyle).arg(destImagePath);
                     }
                 }
 
@@ -578,8 +578,8 @@ VFile *VDirectory::copyFile(VDirectory *p_destDir, const QString &p_destName,
                     VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                         tr("Fail to copy image <span style=\"%1\">%2</span> while "
                                            "%5 note <span style=\"%3\">%4</span>.")
-                                          .arg(vconfig.c_dataTextStyle).arg(link.m_path)
-                                          .arg(vconfig.c_dataTextStyle).arg(srcPath)
+                                          .arg(g_config->c_dataTextStyle).arg(link.m_path)
+                                          .arg(g_config->c_dataTextStyle).arg(srcPath)
                                           .arg(p_cut ? tr("moving") : tr("copying")),
                                         errStr, QMessageBox::Ok, QMessageBox::Ok, NULL);
                 }

src/vdirectorytree.cpp

@@ -9,7 +9,7 @@
 #include "veditarea.h"
 #include "vconfigmanager.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 extern VNote *g_vnote;
 
 VDirectoryTree::VDirectoryTree(VNote *vnote, QWidget *parent)
@@ -103,7 +103,7 @@ void VDirectoryTree::setNotebook(VNotebook *p_notebook)
     if (!m_notebook->open()) {
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                             tr("Fail to open notebook <span style=\"%1\">%2</span>.")
-                              .arg(vconfig.c_dataTextStyle).arg(m_notebook->getName()), "",
+                              .arg(g_config->c_dataTextStyle).arg(m_notebook->getName()), "",
                             QMessageBox::Ok, QMessageBox::Ok, this);
         clear();
         return;
@@ -165,7 +165,7 @@ void VDirectoryTree::buildSubTree(QTreeWidgetItem *p_parent, int p_depth)
     if (!dir->open()) {
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                             tr("Fail to open folder <span style=\"%1\">%2</span>.")
-                              .arg(vconfig.c_dataTextStyle).arg(dir->getName()), "",
+                              .arg(g_config->c_dataTextStyle).arg(dir->getName()), "",
                             QMessageBox::Ok, QMessageBox::Ok, this);
         return;
     }
@@ -339,7 +339,7 @@ void VDirectoryTree::newSubDirectory()
     VDirectory *curDir = getVDirectory(curItem);
 
     QString info = tr("Create a subfolder in <span style=\"%1\">%2</span>.")
-                     .arg(vconfig.c_dataTextStyle).arg(curDir->getName());
+                     .arg(g_config->c_dataTextStyle).arg(curDir->getName());
     QString text(tr("Folder &name:"));
     QString defaultText("new_folder");
 
@@ -351,7 +351,7 @@ void VDirectoryTree::newSubDirectory()
             if (curDir->findSubDirectory(name, false)) {
                 info = tr("Name (case-insensitive) already exists in "
                           "<span style=\"%1\">%2</span>. Please choose another name.")
-                         .arg(vconfig.c_dataTextStyle).arg(curDir->getName());
+                         .arg(g_config->c_dataTextStyle).arg(curDir->getName());
                 defaultText = name;
                 continue;
             }
@@ -360,7 +360,7 @@ void VDirectoryTree::newSubDirectory()
             if (!subDir) {
                 VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                     tr("Fail to create folder <span style=\"%1\">%2</span>.")
-                                      .arg(vconfig.c_dataTextStyle).arg(name), "",
+                                      .arg(g_config->c_dataTextStyle).arg(name), "",
                                     QMessageBox::Ok, QMessageBox::Ok, this);
                 return;
             }
@@ -377,7 +377,7 @@ void VDirectoryTree::newRootDirectory()
         return;
     }
     QString info = tr("Create a root folder in notebook <span style=\"%1\">%2</span>.")
-                     .arg(vconfig.c_dataTextStyle).arg(m_notebook->getName());
+                     .arg(g_config->c_dataTextStyle).arg(m_notebook->getName());
     QString text(tr("Folder &name:"));
     QString defaultText("new_folder");
     VDirectory *rootDir = m_notebook->getRootDir();
@@ -388,7 +388,7 @@ void VDirectoryTree::newRootDirectory()
             if (rootDir->findSubDirectory(name, false)) {
                 info = tr("Name (case-insensitive) already exists in "
                           "notebook <span style=\"%1\">%2</span>. Please choose another name.")
-                         .arg(vconfig.c_dataTextStyle).arg(m_notebook->getName());
+                         .arg(g_config->c_dataTextStyle).arg(m_notebook->getName());
                 defaultText = name;
                 continue;
             }
@@ -396,7 +396,7 @@ void VDirectoryTree::newRootDirectory()
             if (!subDir) {
                 VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                     tr("Fail to create folder <span style=\"%1\">%2</span>.")
-                                      .arg(vconfig.c_dataTextStyle).arg(name), "",
+                                      .arg(g_config->c_dataTextStyle).arg(name), "",
                                     QMessageBox::Ok, QMessageBox::Ok, this);
                 return;
             }
@@ -416,12 +416,12 @@ void VDirectoryTree::deleteDirectory()
     VDirectory *curDir = getVDirectory(curItem);
     int ret = VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                   tr("Are you sure to delete folder <span style=\"%1\">%2</span>?")
-                                    .arg(vconfig.c_dataTextStyle).arg(curDir->getName()),
+                                    .arg(g_config->c_dataTextStyle).arg(curDir->getName()),
                                   tr("<span style=\"%1\">WARNING</span>: "
                                      "VNote will delete the whole directory (<b>ANY</b> files) "
                                      "<span style=\"%2\">%3</span>."
                                      "<br>It may be UNRECOVERABLE!")
-                                    .arg(vconfig.c_warningTextStyle).arg(vconfig.c_dataTextStyle).arg(curDir->retrivePath()),
+                                    .arg(g_config->c_warningTextStyle).arg(g_config->c_dataTextStyle).arg(curDir->retrivePath()),
                                   QMessageBox::Ok | QMessageBox::Cancel,
                                   QMessageBox::Ok, this, MessageBoxType::Danger);
     if (ret == QMessageBox::Ok) {
@@ -475,7 +475,7 @@ void VDirectoryTree::editDirectoryInfo()
             if (!curDir->rename(name)) {
                 VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                     tr("Fail to rename folder <span style=\"%1\">%2</span>.")
-                                      .arg(vconfig.c_dataTextStyle).arg(curName), "",
+                                      .arg(g_config->c_dataTextStyle).arg(curName), "",
                                     QMessageBox::Ok, QMessageBox::Ok, this);
                 return;
             }
@@ -679,7 +679,7 @@ bool VDirectoryTree::copyDirectory(VDirectory *p_destDir, const QString &p_destN
     } else {
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                             tr("Fail to copy folder <span style=\"%1\">%2</span>.")
-                              .arg(vconfig.c_dataTextStyle).arg(srcName),
+                              .arg(g_config->c_dataTextStyle).arg(srcName),
                             tr("Please check if there already exists a folder with the same name."),
                             QMessageBox::Ok, QMessageBox::Ok, this);
     }

src/vedit.cpp

@@ -10,35 +10,35 @@
 #include "veditoperations.h"
 #include "vedittab.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 extern VNote *g_vnote;
 
 void VEditConfig::init(const QFontMetrics &p_metric)
 {
     update(p_metric);
 
-    m_enableVimMode = vconfig.getEnableVimMode();
+    m_enableVimMode = g_config->getEnableVimMode();
 
     m_highlightWholeBlock = m_enableVimMode;
 }
 
 void VEditConfig::update(const QFontMetrics &p_metric)
 {
-    if (vconfig.getTabStopWidth() > 0) {
-        m_tabStopWidth = vconfig.getTabStopWidth() * p_metric.width(' ');
+    if (g_config->getTabStopWidth() > 0) {
+        m_tabStopWidth = g_config->getTabStopWidth() * p_metric.width(' ');
     } else {
         m_tabStopWidth = 0;
     }
 
-    m_expandTab = vconfig.getIsExpandTab();
+    m_expandTab = g_config->getIsExpandTab();
 
-    if (m_expandTab && (vconfig.getTabStopWidth() > 0)) {
-        m_tabSpaces = QString(vconfig.getTabStopWidth(), ' ');
+    if (m_expandTab && (g_config->getTabStopWidth() > 0)) {
+        m_tabSpaces = QString(g_config->getTabStopWidth(), ' ');
     } else {
         m_tabSpaces = "\t";
     }
 
-    m_cursorLineBg = QColor(vconfig.getEditorCurrentLineBg());
+    m_cursorLineBg = QColor(g_config->getEditorCurrentLineBg());
 }
 
 VEdit::VEdit(VFile *p_file, QWidget *p_parent)
@@ -49,11 +49,11 @@ VEdit::VEdit(VFile *p_file, QWidget *p_parent)
     const int extraSelectionHighlightTimer = 500;
     const int labelSize = 64;
 
-    m_selectedWordColor = QColor(vconfig.getEditorSelectedWordBg());
-    m_searchedWordColor = QColor(vconfig.getEditorSearchedWordBg());
-    m_searchedWordCursorColor = QColor(vconfig.getEditorSearchedWordCursorBg());
-    m_incrementalSearchedWordColor = QColor(vconfig.getEditorIncrementalSearchedWordBg());
-    m_trailingSpaceColor = QColor(vconfig.getEditorTrailingSpaceBg());
+    m_selectedWordColor = QColor(g_config->getEditorSelectedWordBg());
+    m_searchedWordColor = QColor(g_config->getEditorSearchedWordBg());
+    m_searchedWordCursorColor = QColor(g_config->getEditorSearchedWordCursorBg());
+    m_incrementalSearchedWordColor = QColor(g_config->getEditorIncrementalSearchedWordBg());
+    m_trailingSpaceColor = QColor(g_config->getEditorTrailingSpaceBg());
 
     QPixmap wrapPixmap(":/resources/icons/search_wrap.svg");
     m_wrapLabel = new QLabel(this);
@@ -467,8 +467,8 @@ void VEdit::labelTimerTimeout()
 
 void VEdit::updateFontAndPalette()
 {
-    setFont(vconfig.getBaseEditFont());
-    setPalette(vconfig.getBaseEditPalette());
+    setFont(g_config->getBaseEditFont());
+    setPalette(g_config->getBaseEditPalette());
 }
 
 void VEdit::highlightExtraSelections(bool p_now)
@@ -496,7 +496,7 @@ void VEdit::doHighlightExtraSelections()
 void VEdit::highlightCurrentLine()
 {
     QList<QTextEdit::ExtraSelection> &selects = m_extraSelections[(int)SelectionId::CurrentLine];
-    if (vconfig.getHighlightCursorLine() && !isReadOnly()) {
+    if (g_config->getHighlightCursorLine() && !isReadOnly()) {
         // Need to highlight current line.
         selects.clear();
 
@@ -545,7 +545,7 @@ void VEdit::setReadOnly(bool p_ro)
 void VEdit::highlightSelectedWord()
 {
     QList<QTextEdit::ExtraSelection> &selects = m_extraSelections[(int)SelectionId::SelectedWord];
-    if (!vconfig.getHighlightSelectedWord()) {
+    if (!g_config->getHighlightSelectedWord()) {
         if (!selects.isEmpty()) {
             selects.clear();
             highlightExtraSelections(true);
@@ -588,7 +588,7 @@ static void trailingSpaceFilter(VEdit *p_editor, QList<QTextEdit::ExtraSelection
 
 void VEdit::highlightTrailingSpace()
 {
-    if (!vconfig.getEnableTrailingSpaceHighlight()) {
+    if (!g_config->getEnableTrailingSpaceHighlight()) {
         QList<QTextEdit::ExtraSelection> &selects = m_extraSelections[(int)SelectionId::TrailingSapce];
         if (!selects.isEmpty()) {
             selects.clear();
@@ -650,7 +650,7 @@ void VEdit::highlightTextAll(const QString &p_text, uint p_options,
 void VEdit::highlightSearchedWord(const QString &p_text, uint p_options)
 {
     QList<QTextEdit::ExtraSelection> &selects = m_extraSelections[(int)SelectionId::SearchedKeyword];
-    if (!vconfig.getHighlightSearchedWord() || p_text.isEmpty()) {
+    if (!g_config->getHighlightSearchedWord() || p_text.isEmpty()) {
         if (!selects.isEmpty()) {
             selects.clear();
             highlightExtraSelections(true);
@@ -688,7 +688,7 @@ void VEdit::highlightSearchedWordUnderCursor(const QTextCursor &p_cursor)
 void VEdit::highlightIncrementalSearchedWord(const QTextCursor &p_cursor)
 {
     QList<QTextEdit::ExtraSelection> &selects = m_extraSelections[(int)SelectionId::IncrementalSearchedKeyword];
-    if (!vconfig.getHighlightSearchedWord() || !p_cursor.hasSelection()) {
+    if (!g_config->getHighlightSearchedWord() || !p_cursor.hasSelection()) {
         if (!selects.isEmpty()) {
             selects.clear();
             highlightExtraSelections(true);
@@ -962,7 +962,7 @@ void VEdit::decorateText(TextDecoration p_decoration)
 void VEdit::updateLineNumberAreaMargin()
 {
     int width = 0;
-    if (vconfig.getEditorLineNumber()) {
+    if (g_config->getEditorLineNumber()) {
         width = m_lineNumberArea->calculateWidth();
     }
 
@@ -971,7 +971,7 @@ void VEdit::updateLineNumberAreaMargin()
 
 void VEdit::updateLineNumberArea()
 {
-    if (vconfig.getEditorLineNumber()) {
+    if (g_config->getEditorLineNumber()) {
         if (!m_lineNumberArea->isVisible()) {
             updateLineNumberAreaMargin();
             m_lineNumberArea->show();
@@ -988,7 +988,7 @@ void VEdit::resizeEvent(QResizeEvent *p_event)
 {
     QTextEdit::resizeEvent(p_event);
 
-    if (vconfig.getEditorLineNumber()) {
+    if (g_config->getEditorLineNumber()) {
         QRect rect = contentsRect();
         m_lineNumberArea->setGeometry(QRect(rect.left(),
                                             rect.top(),
@@ -999,14 +999,14 @@ void VEdit::resizeEvent(QResizeEvent *p_event)
 
 void VEdit::lineNumberAreaPaintEvent(QPaintEvent *p_event)
 {
-    if (!vconfig.getEditorLineNumber()) {
+    if (!g_config->getEditorLineNumber()) {
         updateLineNumberAreaMargin();
         m_lineNumberArea->hide();
         return;
     }
 
     QPainter painter(m_lineNumberArea);
-    painter.fillRect(p_event->rect(), vconfig.getEditorLineNumberBg());
+    painter.fillRect(p_event->rect(), g_config->getEditorLineNumberBg());
 
     QTextDocument *doc = document();
     QAbstractTextDocumentLayout *layout = doc->documentLayout();
@@ -1021,8 +1021,8 @@ void VEdit::lineNumberAreaPaintEvent(QPaintEvent *p_event)
     int eventBtm = p_event->rect().bottom();
     const int digitHeight = m_lineNumberArea->getDigitHeight();
     const int curBlockNumber = textCursor().block().blockNumber();
-    const bool relative = vconfig.getEditorLineNumber() == 2;
-    const QString &fg = vconfig.getEditorLineNumberFg();
+    const bool relative = g_config->getEditorLineNumber() == 2;
+    const QString &fg = g_config->getEditorLineNumberFg();
     painter.setPen(fg);
 
     while (block.isValid() && top <= eventBtm) {

src/veditarea.cpp

@@ -8,7 +8,7 @@
 #include "dialog/vfindreplacedialog.h"
 #include "utils/vutils.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 extern VNote *g_vnote;
 
 VEditArea::VEditArea(VNote *vnote, QWidget *parent)
@@ -26,13 +26,13 @@ void VEditArea::setupUI()
     splitter = new QSplitter(this);
     m_findReplace = new VFindReplaceDialog(this);
     m_findReplace->setOption(FindOption::CaseSensitive,
-                             vconfig.getFindCaseSensitive());
+                             g_config->getFindCaseSensitive());
     m_findReplace->setOption(FindOption::WholeWordOnly,
-                             vconfig.getFindWholeWordOnly());
+                             g_config->getFindWholeWordOnly());
     m_findReplace->setOption(FindOption::RegularExpression,
-                             vconfig.getFindRegularExpression());
+                             g_config->getFindRegularExpression());
     m_findReplace->setOption(FindOption::IncrementalSearch,
-                             vconfig.getFindIncrementalSearch());
+                             g_config->getFindIncrementalSearch());
 
     QVBoxLayout *mainLayout = new QVBoxLayout();
     mainLayout->addWidget(splitter);
@@ -513,10 +513,10 @@ void VEditArea::handleFindTextChanged(const QString &p_text, uint p_options)
 void VEditArea::handleFindOptionChanged(uint p_options)
 {
     qDebug() << "find option changed" << p_options;
-    vconfig.setFindCaseSensitive(p_options & FindOption::CaseSensitive);
-    vconfig.setFindWholeWordOnly(p_options & FindOption::WholeWordOnly);
-    vconfig.setFindRegularExpression(p_options & FindOption::RegularExpression);
-    vconfig.setFindIncrementalSearch(p_options & FindOption::IncrementalSearch);
+    g_config->setFindCaseSensitive(p_options & FindOption::CaseSensitive);
+    g_config->setFindWholeWordOnly(p_options & FindOption::WholeWordOnly);
+    g_config->setFindRegularExpression(p_options & FindOption::RegularExpression);
+    g_config->setFindIncrementalSearch(p_options & FindOption::IncrementalSearch);
 }
 
 void VEditArea::handleFindNext(const QString &p_text, uint p_options,

src/veditoperations.cpp

@@ -6,7 +6,7 @@
 #include "vconfigmanager.h"
 #include "utils/vutils.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VEditOperations::VEditOperations(VEdit *p_editor, VFile *p_file)
     : QObject(p_editor), m_editor(p_editor), m_file(p_file),
@@ -41,20 +41,20 @@ void VEditOperations::updateCursorLineBg()
     if (m_editConfig->m_enableVimMode) {
         switch (m_vim->getMode()) {
         case VimMode::Normal:
-            m_editConfig->m_cursorLineBg = QColor(vconfig.getEditorVimNormalBg());
+            m_editConfig->m_cursorLineBg = QColor(g_config->getEditorVimNormalBg());
             break;
 
         case VimMode::Insert:
-            m_editConfig->m_cursorLineBg = QColor(vconfig.getEditorVimInsertBg());
+            m_editConfig->m_cursorLineBg = QColor(g_config->getEditorVimInsertBg());
             break;
 
         case VimMode::Visual:
         case VimMode::VisualLine:
-            m_editConfig->m_cursorLineBg = QColor(vconfig.getEditorVimVisualBg());
+            m_editConfig->m_cursorLineBg = QColor(g_config->getEditorVimVisualBg());
             break;
 
         case VimMode::Replace:
-            m_editConfig->m_cursorLineBg = QColor(vconfig.getEditorVimReplaceBg());
+            m_editConfig->m_cursorLineBg = QColor(g_config->getEditorVimReplaceBg());
             break;
 
         default:
@@ -62,7 +62,7 @@ void VEditOperations::updateCursorLineBg()
             break;
         }
     } else {
-        m_editConfig->m_cursorLineBg = QColor(vconfig.getEditorCurrentLineBg());
+        m_editConfig->m_cursorLineBg = QColor(g_config->getEditorCurrentLineBg());
     }
 
     m_editor->highlightCurrentLine();

src/veditwindow.cpp

@@ -3,7 +3,6 @@
 #include "veditwindow.h"
 #include "vedittab.h"
 #include "vnote.h"
-#include "vconfigmanager.h"
 #include "utils/vutils.h"
 #include "vorphanfile.h"
 #include "vmainwindow.h"
@@ -13,7 +12,6 @@
 #include "vhtmltab.h"
 #include "vfilelist.h"
 
-extern VConfigManager vconfig;
 extern VNote *g_vnote;
 
 VEditWindow::VEditWindow(VNote *vnote, VEditArea *editArea, QWidget *parent)

src/vexporter.cpp

@@ -23,7 +23,7 @@
 #include "vmarkdownconverter.h"
 #include "vdocument.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 QString VExporter::s_defaultPathDir = QDir::homePath();
 
@@ -183,7 +183,7 @@ void VExporter::exportNote(VFile *p_file, ExportType p_type)
     }
 
     m_infoLabel->setText(tr("Export note <span style=\"%1\">%2</span> as %3.")
-                            .arg(vconfig.c_dataTextStyle)
+                            .arg(g_config->c_dataTextStyle)
                             .arg(m_file->getName())
                             .arg(exportTypeStr(p_type)));
 
@@ -218,7 +218,7 @@ void VExporter::initWebViewer(VFile *p_file)
         VMarkdownConverter mdConverter;
         QString toc;
         QString html = mdConverter.generateHtml(p_file->getContent(),
-                                                vconfig.getMarkdownExtensions(),
+                                                g_config->getMarkdownExtensions(),
                                                 toc);
         document->setHtml(html);
     }

src/vfilelist.cpp

@@ -11,7 +11,7 @@
 #include "vfile.h"
 #include "vconfigmanager.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 extern VNote *g_vnote;
 
 VFileList::VFileList(QWidget *parent)
@@ -161,7 +161,7 @@ void VFileList::fileInfo(VFile *p_file)
             if (!p_file->rename(name)) {
                 VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                     tr("Fail to rename note <span style=\"%1\">%2</span>.")
-                                      .arg(vconfig.c_dataTextStyle).arg(curName), "",
+                                      .arg(g_config->c_dataTextStyle).arg(curName), "",
                                     QMessageBox::Ok, QMessageBox::Ok, this);
                 return;
             }
@@ -220,7 +220,7 @@ void VFileList::newFile()
         return;
     }
 
-    QList<QString> suffixes = vconfig.getDocSuffixes()[(int)DocType::Markdown];
+    QList<QString> suffixes = g_config->getDocSuffixes()[(int)DocType::Markdown];
     QString defaultSuf;
     QString suffixStr;
     for (auto const & suf : suffixes) {
@@ -231,7 +231,7 @@ void VFileList::newFile()
     }
 
     QString info = tr("Create a note in <span style=\"%1\">%2</span>.")
-                     .arg(vconfig.c_dataTextStyle).arg(m_directory->getName());
+                     .arg(g_config->c_dataTextStyle).arg(m_directory->getName());
     info = info + "<br>" + tr("Note with name ending with \"%1\" will be treated as Markdown type.")
                              .arg(suffixStr);
     QString text(tr("Note &name:"));
@@ -251,7 +251,7 @@ void VFileList::newFile()
             if (!file) {
                 VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                     tr("Fail to create note <span style=\"%1\">%2</span>.")
-                                      .arg(vconfig.c_dataTextStyle).arg(name), "",
+                                      .arg(g_config->c_dataTextStyle).arg(name), "",
                                     QMessageBox::Ok, QMessageBox::Ok, this);
                 return;
             }
@@ -309,10 +309,10 @@ void VFileList::deleteFile(VFile *p_file)
     QString fileName = p_file->getName();
     int ret = VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                   tr("Are you sure to delete note <span style=\"%1\">%2</span>?")
-                                    .arg(vconfig.c_dataTextStyle).arg(fileName),
+                                    .arg(g_config->c_dataTextStyle).arg(fileName),
                                   tr("<span style=\"%1\">WARNING</span>: The files (including images) "
                                      "deleted may be UNRECOVERABLE!")
-                                    .arg(vconfig.c_warningTextStyle),
+                                    .arg(g_config->c_warningTextStyle),
                                   QMessageBox::Ok | QMessageBox::Cancel,
                                   QMessageBox::Ok, this, MessageBoxType::Danger);
     if (ret == QMessageBox::Ok) {
@@ -486,7 +486,7 @@ void VFileList::pasteFiles(VDirectory *p_destDir)
         } else {
             VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                 tr("Fail to copy note <span style=\"%1\">%2</span>.")
-                                  .arg(vconfig.c_dataTextStyle).arg(srcFile->getName()),
+                                  .arg(g_config->c_dataTextStyle).arg(srcFile->getName()),
                                 tr("Please check if there already exists a file with the same name in the target folder."),
                                 QMessageBox::Ok, QMessageBox::Ok, this);
         }
@@ -528,7 +528,7 @@ bool VFileList::promptForDocTypeChange(const VFile *p_file, const QString &p_new
             int ret = VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                                           tr("The renaming will change the note type."),
                                           tr("You should close the note <span style=\"%1\">%2</span> before continue.")
-                                            .arg(vconfig.c_dataTextStyle).arg(p_file->getName()),
+                                            .arg(g_config->c_dataTextStyle).arg(p_file->getName()),
                                           QMessageBox::Ok | QMessageBox::Cancel, QMessageBox::Ok, this);
             if (QMessageBox::Ok == ret) {
                 if (!editArea->closeFile(p_file, false)) {

src/vhtmltab.cpp

@@ -9,7 +9,7 @@
 #include "veditarea.h"
 #include "vconstants.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VHtmlTab::VHtmlTab(VFile *p_file, VEditArea *p_editArea,
                    OpenFileMode p_mode, QWidget *p_parent)
@@ -120,7 +120,7 @@ void VHtmlTab::readFile()
         // Prompt to save the changes.
         int ret = VUtils::showMessage(QMessageBox::Information, tr("Information"),
                                       tr("Note <span style=\"%1\">%2</span> has been modified.")
-                                        .arg(vconfig.c_dataTextStyle).arg(m_file->getName()),
+                                        .arg(g_config->c_dataTextStyle).arg(m_file->getName()),
                                       tr("Do you want to save your changes?"),
                                       QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel,
                                       QMessageBox::Save, this);
@@ -164,7 +164,7 @@ bool VHtmlTab::saveFile()
         qWarning() << filePath << "being written has been removed";
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"), tr("Fail to save note."),
                             tr("File <span style=\"%1\">%2</span> being written has been removed.")
-                              .arg(vconfig.c_dataTextStyle).arg(filePath),
+                              .arg(g_config->c_dataTextStyle).arg(filePath),
                             QMessageBox::Ok, QMessageBox::Ok, this);
         return false;
     }

src/vimagepreviewer.cpp

@@ -13,7 +13,7 @@
 #include "vdownloader.h"
 #include "hgmarkdownhighlighter.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 enum ImageProperty { ImagePath = 1 };
 
@@ -43,7 +43,7 @@ VImagePreviewer::VImagePreviewer(VMdEdit *p_edit, int p_timeToPreview)
 
 void VImagePreviewer::timerTimeout()
 {
-    if (!vconfig.getEnablePreviewImages()) {
+    if (!g_config->getEnablePreviewImages()) {
         if (m_enablePreview) {
             disableImagePreview();
         }
@@ -355,7 +355,7 @@ void VImagePreviewer::enableImagePreview()
 {
     m_enablePreview = true;
 
-    if (vconfig.getEnablePreviewImages()) {
+    if (g_config->getEnablePreviewImages()) {
         m_timer->stop();
         m_timer->start();
     }
@@ -542,7 +542,7 @@ bool VImagePreviewer::updateImageWidth(QTextImageFormat &p_format)
 
     if (it != m_imageCache.end()) {
         int newWidth = it.value().m_width;
-        if (vconfig.getEnablePreviewImageConstraint()) {
+        if (g_config->getEnablePreviewImageConstraint()) {
             newWidth = qMin(m_imageWidth, it.value().m_width);
         }
 

src/vmainwindow.cpp

@@ -27,7 +27,7 @@
 #include "dialog/vorphanfileinfodialog.h"
 #include "vsingleinstanceguard.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VNote *g_vnote;
 
@@ -334,7 +334,7 @@ void VMainWindow::initFileToolBar(QSize p_iconSize)
     newNoteAct = new QAction(QIcon(":/resources/icons/create_note_tb.svg"),
                              tr("New &Note"), this);
     newNoteAct->setStatusTip(tr("Create a note in current folder"));
-    QString keySeq = vconfig.getShortcutKeySequence("NewNote");
+    QString keySeq = g_config->getShortcutKeySequence("NewNote");
     qDebug() << "set NewNote shortcut to" << keySeq;
     newNoteAct->setShortcut(QKeySequence(keySeq));
     connect(newNoteAct, &QAction::triggered,
@@ -355,7 +355,7 @@ void VMainWindow::initFileToolBar(QSize p_iconSize)
     m_closeNoteAct = new QAction(QIcon(":/resources/icons/close_note_tb.svg"),
                                  tr("&Close Note"), this);
     m_closeNoteAct->setStatusTip(tr("Close current note"));
-    keySeq = vconfig.getShortcutKeySequence("CloseNote");
+    keySeq = g_config->getShortcutKeySequence("CloseNote");
     qDebug() << "set CloseNote shortcut to" << keySeq;
     m_closeNoteAct->setShortcut(QKeySequence(keySeq));
     connect(m_closeNoteAct, &QAction::triggered,
@@ -368,7 +368,7 @@ void VMainWindow::initFileToolBar(QSize p_iconSize)
     editNoteAct = new QAction(QIcon(":/resources/icons/edit_note.svg"),
                               tr("&Edit"), this);
     editNoteAct->setStatusTip(tr("Edit current note"));
-    keySeq = vconfig.getShortcutKeySequence("EditNote");
+    keySeq = g_config->getShortcutKeySequence("EditNote");
     qDebug() << "set EditNote shortcut to" << keySeq;
     editNoteAct->setShortcut(QKeySequence(keySeq));
     connect(editNoteAct, &QAction::triggered,
@@ -389,7 +389,7 @@ void VMainWindow::initFileToolBar(QSize p_iconSize)
                               tr("Save Changes And Read (Ctrl+T)"), this);
     saveExitAct->setStatusTip(tr("Save changes and exit edit mode"));
     saveExitAct->setMenu(exitEditMenu);
-    keySeq = vconfig.getShortcutKeySequence("SaveAndRead");
+    keySeq = g_config->getShortcutKeySequence("SaveAndRead");
     qDebug() << "set SaveAndRead shortcut to" << keySeq;
     saveExitAct->setShortcut(QKeySequence(keySeq));
     connect(saveExitAct, &QAction::triggered,
@@ -398,7 +398,7 @@ void VMainWindow::initFileToolBar(QSize p_iconSize)
     saveNoteAct = new QAction(QIcon(":/resources/icons/save_note.svg"),
                               tr("Save"), this);
     saveNoteAct->setStatusTip(tr("Save changes to current note"));
-    keySeq = vconfig.getShortcutKeySequence("SaveNote");
+    keySeq = g_config->getShortcutKeySequence("SaveNote");
     qDebug() << "set SaveNote shortcut to" << keySeq;
     saveNoteAct->setShortcut(QKeySequence(keySeq));
     connect(saveNoteAct, &QAction::triggered,
@@ -442,10 +442,10 @@ void VMainWindow::initHelpMenu()
 
 #if defined(QT_NO_DEBUG)
     QAction *logAct = new QAction(tr("View &Log"), this);
-    logAct->setToolTip(tr("View VNote's debug log (%1)").arg(vconfig.getLogFilePath()));
+    logAct->setToolTip(tr("View VNote's debug log (%1)").arg(g_config->getLogFilePath()));
     connect(logAct, &QAction::triggered,
             this, [](){
-                QUrl url = QUrl::fromLocalFile(vconfig.getLogFilePath());
+                QUrl url = QUrl::fromLocalFile(g_config->getLogFilePath());
                 QDesktopServices::openUrl(url);
             });
 #endif
@@ -555,7 +555,7 @@ void VMainWindow::initMarkdownMenu()
     converterMenu->addAction(markdownitAct);
     converterMenu->addAction(showdownAct);
 
-    MarkdownConverterType converterType = vconfig.getMdConverterType();
+    MarkdownConverterType converterType = g_config->getMdConverterType();
     switch (converterType) {
     case MarkdownConverterType::Marked:
         markedAct->setChecked(true);
@@ -587,7 +587,7 @@ void VMainWindow::initMarkdownMenu()
     connect(constrainImageAct, &QAction::triggered,
             this, &VMainWindow::enableImageConstraint);
     markdownMenu->addAction(constrainImageAct);
-    constrainImageAct->setChecked(vconfig.getEnableImageConstraint());
+    constrainImageAct->setChecked(g_config->getEnableImageConstraint());
 
     QAction *imageCaptionAct = new QAction(tr("Enable Image Caption"), this);
     imageCaptionAct->setToolTip(tr("Center the images and display the alt text as caption (re-open current tabs to make it work)"));
@@ -595,7 +595,7 @@ void VMainWindow::initMarkdownMenu()
     connect(imageCaptionAct, &QAction::triggered,
             this, &VMainWindow::enableImageCaption);
     markdownMenu->addAction(imageCaptionAct);
-    imageCaptionAct->setChecked(vconfig.getEnableImageCaption());
+    imageCaptionAct->setChecked(g_config->getEnableImageCaption());
 
     markdownMenu->addSeparator();
 
@@ -606,17 +606,17 @@ void VMainWindow::initMarkdownMenu()
             this, &VMainWindow::enableMermaid);
     markdownMenu->addAction(mermaidAct);
 
-    mermaidAct->setChecked(vconfig.getEnableMermaid());
+    mermaidAct->setChecked(g_config->getEnableMermaid());
 
     QAction *flowchartAct = new QAction(tr("&Flowchart.js"), this);
     flowchartAct->setToolTip(tr("Enable Flowchart.js for flowchart diagram"));
     flowchartAct->setCheckable(true);
     connect(flowchartAct, &QAction::triggered,
             this, [this](bool p_enabled){
-                vconfig.setEnableFlowchart(p_enabled);
+                g_config->setEnableFlowchart(p_enabled);
             });
     markdownMenu->addAction(flowchartAct);
-    flowchartAct->setChecked(vconfig.getEnableFlowchart());
+    flowchartAct->setChecked(g_config->getEnableFlowchart());
 
     QAction *mathjaxAct = new QAction(tr("Math&Jax"), this);
     mathjaxAct->setToolTip(tr("Enable MathJax for math support in Markdown"));
@@ -625,7 +625,7 @@ void VMainWindow::initMarkdownMenu()
             this, &VMainWindow::enableMathjax);
     markdownMenu->addAction(mathjaxAct);
 
-    mathjaxAct->setChecked(vconfig.getEnableMathjax());
+    mathjaxAct->setChecked(g_config->getEnableMathjax());
 
     markdownMenu->addSeparator();
 
@@ -635,7 +635,7 @@ void VMainWindow::initMarkdownMenu()
     connect(codeBlockAct, &QAction::triggered,
             this, &VMainWindow::enableCodeBlockHighlight);
     markdownMenu->addAction(codeBlockAct);
-    codeBlockAct->setChecked(vconfig.getEnableCodeBlockHighlight());
+    codeBlockAct->setChecked(g_config->getEnableCodeBlockHighlight());
 
     QAction *previewImageAct = new QAction(tr("Preview Images In Edit Mode"), this);
     previewImageAct->setToolTip(tr("Enable image preview in edit mode"));
@@ -644,7 +644,7 @@ void VMainWindow::initMarkdownMenu()
             this, &VMainWindow::enableImagePreview);
     // TODO: add the action to the menu after handling the UNDO history well.
     // markdownMenu->addAction(previewImageAct);
-    previewImageAct->setChecked(vconfig.getEnablePreviewImages());
+    previewImageAct->setChecked(g_config->getEnablePreviewImages());
 
     QAction *previewWidthAct = new QAction(tr("Constrain The Width Of Previewed Images"), this);
     previewWidthAct->setToolTip(tr("Constrain the width of previewed images to the edit window in edit mode"));
@@ -652,7 +652,7 @@ void VMainWindow::initMarkdownMenu()
     connect(previewWidthAct, &QAction::triggered,
             this, &VMainWindow::enableImagePreviewConstraint);
     markdownMenu->addAction(previewWidthAct);
-    previewWidthAct->setChecked(vconfig.getEnablePreviewImageConstraint());
+    previewWidthAct->setChecked(g_config->getEnablePreviewImageConstraint());
 }
 
 void VMainWindow::initViewMenu()
@@ -747,9 +747,9 @@ void VMainWindow::initFileMenu()
                 if (ret == QMessageBox::Ok) {
 #if defined(Q_OS_MACOS) || defined(Q_OS_MAC)
                     // On macOS, it seems that we could not open that ini file directly.
-                    QUrl url = QUrl::fromLocalFile(vconfig.getConfigFolder());
+                    QUrl url = QUrl::fromLocalFile(g_config->getConfigFolder());
 #else
-                    QUrl url = QUrl::fromLocalFile(vconfig.getConfigFilePath());
+                    QUrl url = QUrl::fromLocalFile(g_config->getConfigFilePath());
 #endif
                     QDesktopServices::openUrl(url);
                 }
@@ -792,7 +792,7 @@ void VMainWindow::initEditMenu()
     m_findReplaceAct = newAction(QIcon(":/resources/icons/find_replace.svg"),
                                  tr("Find/Replace"), this);
     m_findReplaceAct->setToolTip(tr("Open Find/Replace dialog to search in current note"));
-    QString keySeq = vconfig.getShortcutKeySequence("Find");
+    QString keySeq = g_config->getShortcutKeySequence("Find");
     qDebug() << "set Find shortcut to" << keySeq;
     m_findReplaceAct->setShortcut(QKeySequence(keySeq));
     connect(m_findReplaceAct, &QAction::triggered,
@@ -800,7 +800,7 @@ void VMainWindow::initEditMenu()
 
     m_findNextAct = new QAction(tr("Find Next"), this);
     m_findNextAct->setToolTip(tr("Find next occurence"));
-    keySeq = vconfig.getShortcutKeySequence("FindNext");
+    keySeq = g_config->getShortcutKeySequence("FindNext");
     qDebug() << "set FindNext shortcut to" << keySeq;
     m_findNextAct->setShortcut(QKeySequence(keySeq));
     connect(m_findNextAct, SIGNAL(triggered(bool)),
@@ -808,7 +808,7 @@ void VMainWindow::initEditMenu()
 
     m_findPreviousAct = new QAction(tr("Find Previous"), this);
     m_findPreviousAct->setToolTip(tr("Find previous occurence"));
-    keySeq = vconfig.getShortcutKeySequence("FindPrevious");
+    keySeq = g_config->getShortcutKeySequence("FindPrevious");
     qDebug() << "set FindPrevious shortcut to" << keySeq;
     m_findPreviousAct->setShortcut(QKeySequence(keySeq));
     connect(m_findPreviousAct, SIGNAL(triggered(bool)),
@@ -886,7 +886,7 @@ void VMainWindow::initEditMenu()
     smartImAct->setCheckable(true);
     connect(smartImAct, &QAction::triggered,
             this, [this](bool p_checked){
-                vconfig.setEnableSmartImInVimMode(p_checked);
+                g_config->setEnableSmartImInVimMode(p_checked);
             });
 
     // Highlight current cursor line.
@@ -924,7 +924,7 @@ void VMainWindow::initEditMenu()
     findReplaceMenu->addAction(m_replaceAllAct);
     findReplaceMenu->addSeparator();
     findReplaceMenu->addAction(searchedWordAct);
-    searchedWordAct->setChecked(vconfig.getHighlightSearchedWord());
+    searchedWordAct->setChecked(g_config->getHighlightSearchedWord());
 
     m_findReplaceAct->setEnabled(false);
     m_findNextAct->setEnabled(false);
@@ -935,7 +935,7 @@ void VMainWindow::initEditMenu()
 
     editMenu->addSeparator();
     editMenu->addAction(expandTabAct);
-    if (vconfig.getIsExpandTab()) {
+    if (g_config->getIsExpandTab()) {
         expandTabAct->setChecked(true);
     } else {
         expandTabAct->setChecked(false);
@@ -946,7 +946,7 @@ void VMainWindow::initEditMenu()
     tabStopWidthMenu->addAction(twoSpaceTabAct);
     tabStopWidthMenu->addAction(fourSpaceTabAct);
     tabStopWidthMenu->addAction(eightSpaceTabAct);
-    int tabStopWidth = vconfig.getTabStopWidth();
+    int tabStopWidth = g_config->getTabStopWidth();
     switch (tabStopWidth) {
     case 2:
         twoSpaceTabAct->setChecked(true);
@@ -962,20 +962,20 @@ void VMainWindow::initEditMenu()
     }
 
     editMenu->addAction(m_autoIndentAct);
-    m_autoIndentAct->setChecked(vconfig.getAutoIndent());
+    m_autoIndentAct->setChecked(g_config->getAutoIndent());
 
     editMenu->addAction(autoListAct);
-    if (vconfig.getAutoList()) {
+    if (g_config->getAutoList()) {
         // Let the trigger handler to trigger m_autoIndentAct, too.
         autoListAct->trigger();
     }
     Q_ASSERT(!(autoListAct->isChecked() && !m_autoIndentAct->isChecked()));
 
     editMenu->addAction(vimAct);
-    vimAct->setChecked(vconfig.getEnableVimMode());
+    vimAct->setChecked(g_config->getEnableVimMode());
 
     editMenu->addAction(smartImAct);
-    smartImAct->setChecked(vconfig.getEnableSmartImInVimMode());
+    smartImAct->setChecked(g_config->getEnableSmartImInVimMode());
 
     editMenu->addSeparator();
 
@@ -986,13 +986,13 @@ void VMainWindow::initEditMenu()
     initEditorLineNumberMenu(editMenu);
 
     editMenu->addAction(cursorLineAct);
-    cursorLineAct->setChecked(vconfig.getHighlightCursorLine());
+    cursorLineAct->setChecked(g_config->getHighlightCursorLine());
 
     editMenu->addAction(selectedWordAct);
-    selectedWordAct->setChecked(vconfig.getHighlightSelectedWord());
+    selectedWordAct->setChecked(g_config->getHighlightSelectedWord());
 
     editMenu->addAction(trailingSapceAct);
-    trailingSapceAct->setChecked(vconfig.getEnableTrailingSpaceHighlight());
+    trailingSapceAct->setChecked(g_config->getEnableTrailingSpaceHighlight());
 }
 
 void VMainWindow::initDockWindows()
@@ -1068,7 +1068,7 @@ void VMainWindow::changeMarkdownConverter(QAction *action)
 
     qDebug() << "switch to converter" << type;
 
-    vconfig.setMarkdownConverterType(type);
+    g_config->setMarkdownConverterType(type);
 }
 
 void VMainWindow::aboutMessage()
@@ -1083,37 +1083,37 @@ void VMainWindow::aboutMessage()
 
 void VMainWindow::changeExpandTab(bool checked)
 {
-    vconfig.setIsExpandTab(checked);
+    g_config->setIsExpandTab(checked);
 }
 
 void VMainWindow::enableMermaid(bool p_checked)
 {
-    vconfig.setEnableMermaid(p_checked);
+    g_config->setEnableMermaid(p_checked);
 }
 
 void VMainWindow::enableMathjax(bool p_checked)
 {
-    vconfig.setEnableMathjax(p_checked);
+    g_config->setEnableMathjax(p_checked);
 }
 
 void VMainWindow::changeHighlightCursorLine(bool p_checked)
 {
-    vconfig.setHighlightCursorLine(p_checked);
+    g_config->setHighlightCursorLine(p_checked);
 }
 
 void VMainWindow::changeHighlightSelectedWord(bool p_checked)
 {
-    vconfig.setHighlightSelectedWord(p_checked);
+    g_config->setHighlightSelectedWord(p_checked);
 }
 
 void VMainWindow::changeHighlightSearchedWord(bool p_checked)
 {
-    vconfig.setHighlightSearchedWord(p_checked);
+    g_config->setHighlightSearchedWord(p_checked);
 }
 
 void VMainWindow::changeHighlightTrailingSapce(bool p_checked)
 {
-    vconfig.setEnableTrailingSapceHighlight(p_checked);
+    g_config->setEnableTrailingSapceHighlight(p_checked);
 }
 
 void VMainWindow::setTabStopWidth(QAction *action)
@@ -1121,7 +1121,7 @@ void VMainWindow::setTabStopWidth(QAction *action)
     if (!action) {
         return;
     }
-    vconfig.setTabStopWidth(action->data().toInt());
+    g_config->setTabStopWidth(action->data().toInt());
 }
 
 void VMainWindow::setEditorBackgroundColor(QAction *action)
@@ -1130,12 +1130,12 @@ void VMainWindow::setEditorBackgroundColor(QAction *action)
         return;
     }
 
-    vconfig.setCurBackgroundColor(action->data().toString());
+    g_config->setCurBackgroundColor(action->data().toString());
 }
 
 void VMainWindow::initPredefinedColorPixmaps()
 {
-    const QVector<VColor> &bgColors = vconfig.getPredefinedColors();
+    const QVector<VColor> &bgColors = g_config->getPredefinedColors();
     predefinedColorPixmaps.clear();
     int size = 256;
     for (int i = 0; i < bgColors.size(); ++i) {
@@ -1155,7 +1155,7 @@ void VMainWindow::initRenderBackgroundMenu(QMenu *menu)
 
     QMenu *renderBgMenu = menu->addMenu(tr("&Rendering Background"));
     renderBgMenu->setToolTipsVisible(true);
-    const QString &curBgColor = vconfig.getCurRenderBackgroundColor();
+    const QString &curBgColor = g_config->getCurRenderBackgroundColor();
     QAction *tmpAct = new QAction(tr("System"), renderBackgroundAct);
     tmpAct->setToolTip(tr("Use system's background color configuration for Markdown rendering"));
     tmpAct->setCheckable(true);
@@ -1165,7 +1165,7 @@ void VMainWindow::initRenderBackgroundMenu(QMenu *menu)
     }
     renderBgMenu->addAction(tmpAct);
 
-    const QVector<VColor> &bgColors = vconfig.getPredefinedColors();
+    const QVector<VColor> &bgColors = g_config->getPredefinedColors();
     for (int i = 0; i < bgColors.size(); ++i) {
         tmpAct = new QAction(bgColors[i].name, renderBackgroundAct);
         tmpAct->setToolTip(tr("Set as the background color for Markdown rendering"));
@@ -1198,7 +1198,7 @@ void VMainWindow::updateRenderStyleMenu()
     }
 
     // Update the menu actions with styles.
-    QVector<QString> styles = vconfig.getCssStyles();
+    QVector<QString> styles = g_config->getCssStyles();
     for (auto const &style : styles) {
         QAction *act = new QAction(style, m_renderStyleActs);
         act->setToolTip(tr("Set as the CSS style for Markdown rendering"));
@@ -1208,7 +1208,7 @@ void VMainWindow::updateRenderStyleMenu()
         // Add it to the menu.
         menu->addAction(act);
 
-        if (vconfig.getTemplateCss() == style) {
+        if (g_config->getTemplateCss() == style) {
             act->setChecked(true);
         }
     }
@@ -1244,7 +1244,7 @@ void VMainWindow::initEditorBackgroundMenu(QMenu *menu)
             this, &VMainWindow::setEditorBackgroundColor);
 
     // System background color
-    const QString &curBgColor = vconfig.getCurBackgroundColor();
+    const QString &curBgColor = g_config->getCurBackgroundColor();
     QAction *tmpAct = new QAction(tr("System"), backgroundColorAct);
     tmpAct->setToolTip(tr("Use system's background color configuration for editor"));
     tmpAct->setCheckable(true);
@@ -1253,7 +1253,7 @@ void VMainWindow::initEditorBackgroundMenu(QMenu *menu)
         tmpAct->setChecked(true);
     }
     backgroundColorMenu->addAction(tmpAct);
-    const QVector<VColor> &bgColors = vconfig.getPredefinedColors();
+    const QVector<VColor> &bgColors = g_config->getPredefinedColors();
     for (int i = 0; i < bgColors.size(); ++i) {
         tmpAct = new QAction(bgColors[i].name, backgroundColorAct);
         tmpAct->setToolTip(tr("Set as the background color for editor"));
@@ -1282,10 +1282,10 @@ void VMainWindow::initEditorLineNumberMenu(QMenu *p_menu)
                     return;
                 }
 
-                vconfig.setEditorLineNumber(p_action->data().toInt());
+                g_config->setEditorLineNumber(p_action->data().toInt());
             });
 
-    int lineNumberMode = vconfig.getEditorLineNumber();
+    int lineNumberMode = g_config->getEditorLineNumber();
 
     QAction *act = lineNumAct->addAction(tr("None"));
     act->setToolTip(tr("Do not display line number in edit mode"));
@@ -1329,7 +1329,7 @@ void VMainWindow::updateEditorStyleMenu()
     }
 
     // Update the menu actions with styles.
-    QVector<QString> styles = vconfig.getEditorStyles();
+    QVector<QString> styles = g_config->getEditorStyles();
     for (auto const &style : styles) {
         QAction *act = new QAction(style, m_editorStyleActs);
         act->setToolTip(tr("Set as the editor style"));
@@ -1339,7 +1339,7 @@ void VMainWindow::updateEditorStyleMenu()
         // Add it to the menu.
         menu->addAction(act);
 
-        if (vconfig.getEditorStyle() == style) {
+        if (g_config->getEditorStyle() == style) {
             act->setChecked(true);
         }
     }
@@ -1370,7 +1370,7 @@ void VMainWindow::setRenderBackgroundColor(QAction *action)
     if (!action) {
         return;
     }
-    vconfig.setCurRenderBackgroundColor(action->data().toString());
+    g_config->setCurRenderBackgroundColor(action->data().toString());
     vnote->updateTemplate();
 }
 
@@ -1383,10 +1383,10 @@ void VMainWindow::setRenderStyle(QAction *p_action)
     QString data = p_action->data().toString();
     if (data == "AddStyle") {
         // Add custom style.
-        QUrl url = QUrl::fromLocalFile(vconfig.getStyleConfigFolder());
+        QUrl url = QUrl::fromLocalFile(g_config->getStyleConfigFolder());
         QDesktopServices::openUrl(url);
     } else {
-        vconfig.setTemplateCss(data);
+        g_config->setTemplateCss(data);
         vnote->updateTemplate();
     }
 }
@@ -1400,10 +1400,10 @@ void VMainWindow::setEditorStyle(QAction *p_action)
     QString data = p_action->data().toString();
     if (data == "AddStyle") {
         // Add custom style.
-        QUrl url = QUrl::fromLocalFile(vconfig.getStyleConfigFolder());
+        QUrl url = QUrl::fromLocalFile(g_config->getStyleConfigFolder());
         QDesktopServices::openUrl(url);
     } else {
-        vconfig.setEditorStyle(data);
+        g_config->setEditorStyle(data);
     }
 }
 
@@ -1573,7 +1573,7 @@ void VMainWindow::deleteCurNote()
 
 void VMainWindow::closeEvent(QCloseEvent *event)
 {
-    bool isExit = m_requestQuit || !vconfig.getMinimizeToStystemTray();
+    bool isExit = m_requestQuit || !g_config->getMinimizeToStystemTray();
     m_requestQuit = false;
 
 #if defined(Q_OS_MACOS) || defined(Q_OS_MAC)
@@ -1581,7 +1581,7 @@ void VMainWindow::closeEvent(QCloseEvent *event)
     isExit = true;
 #endif
 
-    if (!isExit && vconfig.getMinimizeToStystemTray() == -1) {
+    if (!isExit && g_config->getMinimizeToStystemTray() == -1) {
         // Not initialized yet. Prompt for user.
         int ret = VUtils::showMessage(QMessageBox::Information,
                                       tr("Close VNote"),
@@ -1592,9 +1592,9 @@ void VMainWindow::closeEvent(QCloseEvent *event)
                                       QMessageBox::Ok,
                                       this);
         if (ret == QMessageBox::Ok) {
-            vconfig.setMinimizeToSystemTray(1);
+            g_config->setMinimizeToSystemTray(1);
         } else if (ret == QMessageBox::No) {
-            vconfig.setMinimizeToSystemTray(0);
+            g_config->setMinimizeToSystemTray(0);
             isExit = true;
         } else {
             event->ignore();
@@ -1626,24 +1626,24 @@ void VMainWindow::saveStateAndGeometry()
     // panel has a width of zero.
     twoPanelView();
 
-    vconfig.setMainWindowGeometry(saveGeometry());
-    vconfig.setMainWindowState(saveState());
-    vconfig.setToolsDockChecked(toolDock->isVisible());
-    vconfig.setMainSplitterState(mainSplitter->saveState());
+    g_config->setMainWindowGeometry(saveGeometry());
+    g_config->setMainWindowState(saveState());
+    g_config->setToolsDockChecked(toolDock->isVisible());
+    g_config->setMainSplitterState(mainSplitter->saveState());
 }
 
 void VMainWindow::restoreStateAndGeometry()
 {
-    const QByteArray &geometry = vconfig.getMainWindowGeometry();
+    const QByteArray &geometry = g_config->getMainWindowGeometry();
     if (!geometry.isEmpty()) {
         restoreGeometry(geometry);
     }
-    const QByteArray &state = vconfig.getMainWindowState();
+    const QByteArray &state = g_config->getMainWindowState();
     if (!state.isEmpty()) {
         restoreState(state);
     }
-    toolDock->setVisible(vconfig.getToolsDockChecked());
-    const QByteArray &splitterState = vconfig.getMainSplitterState();
+    toolDock->setVisible(g_config->getToolsDockChecked());
+    const QByteArray &splitterState = g_config->getMainSplitterState();
     if (!splitterState.isEmpty()) {
         mainSplitter->restoreState(splitterState);
     }
@@ -1781,12 +1781,12 @@ void VMainWindow::closeCurrentFile()
 
 void VMainWindow::changeAutoIndent(bool p_checked)
 {
-    vconfig.setAutoIndent(p_checked);
+    g_config->setAutoIndent(p_checked);
 }
 
 void VMainWindow::changeAutoList(bool p_checked)
 {
-    vconfig.setAutoList(p_checked);
+    g_config->setAutoList(p_checked);
     if (p_checked) {
         if (!m_autoIndentAct->isChecked()) {
             m_autoIndentAct->trigger();
@@ -1799,34 +1799,34 @@ void VMainWindow::changeAutoList(bool p_checked)
 
 void VMainWindow::changeVimMode(bool p_checked)
 {
-    vconfig.setEnableVimMode(p_checked);
+    g_config->setEnableVimMode(p_checked);
 }
 
 void VMainWindow::enableCodeBlockHighlight(bool p_checked)
 {
-    vconfig.setEnableCodeBlockHighlight(p_checked);
+    g_config->setEnableCodeBlockHighlight(p_checked);
 }
 
 void VMainWindow::enableImagePreview(bool p_checked)
 {
-    vconfig.setEnablePreviewImages(p_checked);
+    g_config->setEnablePreviewImages(p_checked);
 }
 
 void VMainWindow::enableImagePreviewConstraint(bool p_checked)
 {
-    vconfig.setEnablePreviewImageConstraint(p_checked);
+    g_config->setEnablePreviewImageConstraint(p_checked);
 }
 
 void VMainWindow::enableImageConstraint(bool p_checked)
 {
-    vconfig.setEnableImageConstraint(p_checked);
+    g_config->setEnableImageConstraint(p_checked);
 
     vnote->updateTemplate();
 }
 
 void VMainWindow::enableImageCaption(bool p_checked)
 {
-    vconfig.setEnableImageCaption(p_checked);
+    g_config->setEnableImageCaption(p_checked);
 }
 
 void VMainWindow::shortcutHelp()

src/vmdedit.cpp

@@ -10,7 +10,7 @@
 #include "dialog/vselectdialog.h"
 #include "vimagepreviewer.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 extern VNote *g_vnote;
 
 VMdEdit::VMdEdit(VFile *p_file, VDocument *p_vdoc, MarkdownConverterType p_type,
@@ -20,8 +20,8 @@ VMdEdit::VMdEdit(VFile *p_file, VDocument *p_vdoc, MarkdownConverterType p_type,
     V_ASSERT(p_file->getDocType() == DocType::Markdown);
 
     setAcceptRichText(false);
-    m_mdHighlighter = new HGMarkdownHighlighter(vconfig.getMdHighlightingStyles(),
-                                                vconfig.getCodeBlockStyles(),
+    m_mdHighlighter = new HGMarkdownHighlighter(g_config->getMdHighlightingStyles(),
+                                                g_config->getCodeBlockStyles(),
                                                 700, document());
     connect(m_mdHighlighter, &HGMarkdownHighlighter::highlightCompleted,
             this, &VMdEdit::generateEditOutline);
@@ -60,8 +60,8 @@ VMdEdit::VMdEdit(VFile *p_file, VDocument *p_vdoc, MarkdownConverterType p_type,
 
 void VMdEdit::updateFontAndPalette()
 {
-    setFont(vconfig.getMdEditFont());
-    setPalette(vconfig.getMdEditPalette());
+    setFont(g_config->getMdEditFont());
+    setPalette(g_config->getMdEditPalette());
 }
 
 void VMdEdit::beginEdit()
@@ -392,7 +392,7 @@ int VMdEdit::removeObjectReplacementLine(QString &p_text, int p_index) const
 
 void VMdEdit::handleSelectionChanged()
 {
-    if (!vconfig.getEnablePreviewImages()) {
+    if (!g_config->getEnablePreviewImages()) {
         return;
     }
 

src/vmdeditoperations.cpp

@@ -24,7 +24,7 @@
 #include "utils/vvim.h"
 #include "utils/veditutils.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 const QString VMdEditOperations::c_defaultImageTitle = "image";
 
@@ -63,18 +63,18 @@ void VMdEditOperations::insertImageFromQImage(const QString &title, const QStrin
     bool ret = VUtils::makePath(path);
     if (!ret) {
         errStr = tr("Fail to create image folder <span style=\"%1\">%2</span>.")
-                   .arg(vconfig.c_dataTextStyle).arg(path);
+                   .arg(g_config->c_dataTextStyle).arg(path);
     } else {
         ret = image.save(filePath);
         if (!ret) {
             errStr = tr("Fail to save image <span style=\"%1\">%2</span>.")
-                       .arg(vconfig.c_dataTextStyle).arg(filePath);
+                       .arg(g_config->c_dataTextStyle).arg(filePath);
         }
     }
 
     if (!ret) {
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
-                            tr("Fail to insert image <span style=\"%1\">%2</span>.").arg(vconfig.c_dataTextStyle).arg(title),
+                            tr("Fail to insert image <span style=\"%1\">%2</span>.").arg(g_config->c_dataTextStyle).arg(title),
                             errStr,
                             QMessageBox::Ok,
                             QMessageBox::Ok,
@@ -103,18 +103,18 @@ void VMdEditOperations::insertImageFromPath(const QString &title, const QString
     bool ret = VUtils::makePath(path);
     if (!ret) {
         errStr = tr("Fail to create image folder <span style=\"%1\">%2</span>.")
-                   .arg(vconfig.c_dataTextStyle).arg(path);
+                   .arg(g_config->c_dataTextStyle).arg(path);
     } else {
         ret = QFile::copy(oriImagePath, filePath);
         if (!ret) {
             errStr = tr("Fail to copy image <span style=\"%1\">%2</span>.")
-                       .arg(vconfig.c_dataTextStyle).arg(filePath);
+                       .arg(g_config->c_dataTextStyle).arg(filePath);
         }
     }
 
     if (!ret) {
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
-                            tr("Fail to insert image <span style=\"%1\">%2</span>.").arg(vconfig.c_dataTextStyle).arg(title),
+                            tr("Fail to insert image <span style=\"%1\">%2</span>.").arg(g_config->c_dataTextStyle).arg(title),
                             errStr,
                             QMessageBox::Ok,
                             QMessageBox::Ok,
@@ -576,7 +576,7 @@ bool VMdEditOperations::handleKeyReturn(QKeyEvent *p_event)
 
     bool handled = false;
     m_autoIndentPos = -1;
-    if (vconfig.getAutoIndent()) {
+    if (g_config->getAutoIndent()) {
         handled = true;
 
         QTextCursor cursor = m_editor->textCursor();
@@ -588,7 +588,7 @@ bool VMdEditOperations::handleKeyReturn(QKeyEvent *p_event)
         textInserted = VEditUtils::insertBlockWithIndent(cursor);
 
         // Continue the list from previous line.
-        if (vconfig.getAutoList() && autolist) {
+        if (g_config->getAutoList() && autolist) {
             textInserted = VEditUtils::insertListMarkAsPreviousBlock(cursor) || textInserted;
         }
 

src/vmdtab.cpp

@@ -18,12 +18,12 @@
 #include "vconstants.h"
 #include "vwebview.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VMdTab::VMdTab(VFile *p_file, VEditArea *p_editArea,
                OpenFileMode p_mode, QWidget *p_parent)
     : VEditTab(p_file, p_editArea, p_parent), m_editor(NULL), m_webViewer(NULL),
-      m_document(NULL), m_mdConType(vconfig.getMdConverterType())
+      m_document(NULL), m_mdConType(g_config->getMdConverterType())
 {
     V_ASSERT(m_file->getDocType() == DocType::Markdown);
 
@@ -105,7 +105,7 @@ void VMdTab::viewWebByConverter()
     VMarkdownConverter mdConverter;
     QString toc;
     QString html = mdConverter.generateHtml(m_file->getContent(),
-                                            vconfig.getMarkdownExtensions(),
+                                            g_config->getMarkdownExtensions(),
                                             toc);
     m_document->setHtml(html);
     updateTocFromHtml(toc);
@@ -190,7 +190,7 @@ void VMdTab::readFile()
         // Prompt to save the changes.
         int ret = VUtils::showMessage(QMessageBox::Information, tr("Information"),
                                       tr("Note <span style=\"%1\">%2</span> has been modified.")
-                                        .arg(vconfig.c_dataTextStyle).arg(m_file->getName()),
+                                        .arg(g_config->c_dataTextStyle).arg(m_file->getName()),
                                       tr("Do you want to save your changes?"),
                                       QMessageBox::Save | QMessageBox::Discard | QMessageBox::Cancel,
                                       QMessageBox::Save, this);
@@ -240,7 +240,7 @@ bool VMdTab::saveFile()
         qWarning() << filePath << "being written has been removed";
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"), tr("Fail to save note."),
                             tr("File <span style=\"%1\">%2</span> being written has been removed.")
-                              .arg(vconfig.c_dataTextStyle).arg(filePath),
+                              .arg(g_config->c_dataTextStyle).arg(filePath),
                             QMessageBox::Ok, QMessageBox::Ok, this);
         return false;
     }
@@ -278,7 +278,7 @@ void VMdTab::setupMarkdownViewer()
 
     VPreviewPage *page = new VPreviewPage(m_webViewer);
     m_webViewer->setPage(page);
-    m_webViewer->setZoomFactor(vconfig.getWebZoomFactor());
+    m_webViewer->setZoomFactor(g_config->getWebZoomFactor());
 
     m_document = new VDocument(m_file, m_webViewer);
 

src/vnote.cpp

@@ -13,7 +13,7 @@
 #include "vmainwindow.h"
 #include "vorphanfile.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 QString VNote::s_markdownTemplate;
 QString VNote::s_markdownTemplatePDF;
@@ -55,7 +55,7 @@ VNote::VNote(QObject *parent)
     : QObject(parent), m_mainWindow(dynamic_cast<VMainWindow *>(parent))
 {
     initTemplate();
-    vconfig.getNotebooks(m_notebooks, this);
+    g_config->getNotebooks(m_notebooks, this);
 }
 
 void VNote::initPalette(QPalette palette)
@@ -169,8 +169,8 @@ void VNote::updateTemplate()
 
     // Get background color
     QString rgb;
-    const QString &curRenderBg = vconfig.getCurRenderBackgroundColor();
-    const QVector<VColor> &predefinedColors = vconfig.getPredefinedColors();
+    const QString &curRenderBg = g_config->getCurRenderBackgroundColor();
+    const QVector<VColor> &predefinedColors = g_config->getPredefinedColors();
     if (curRenderBg != "System") {
         for (int i = 0; i < predefinedColors.size(); ++i) {
             if (predefinedColors[i].name == curRenderBg) {
@@ -184,7 +184,7 @@ void VNote::updateTemplate()
         cssStyle += "body { background-color: #" + rgb + " !important; }\n";
     }
 
-    if (vconfig.getEnableImageConstraint()) {
+    if (g_config->getEnableImageConstraint()) {
         // Constain the image width.
         cssStyle += "img { max-width: 100% !important; height: auto !important; }\n";
     }
@@ -193,7 +193,7 @@ void VNote::updateTemplate()
     const QString cssHolder("CSS_PLACE_HOLDER");
 
     s_markdownTemplate = VUtils::readFileFromDisk(c_markdownTemplatePath);
-    s_markdownTemplate.replace(cssHolder, vconfig.getTemplateCssUrl());
+    s_markdownTemplate.replace(cssHolder, g_config->getTemplateCssUrl());
 
     s_markdownTemplatePDF = s_markdownTemplate;
 
@@ -204,7 +204,7 @@ void VNote::updateTemplate()
     // Shoudl not display scrollbar in PDF.
     cssStyle += "pre code { white-space: pre-wrap !important; "
                            "word-break: break-all !important; }\n";
-    if (!vconfig.getEnableImageConstraint()) {
+    if (!g_config->getEnableImageConstraint()) {
         // Constain the image width by force in PDF, otherwise, the PDF will
         // be cut off.
         cssStyle += "img { max-width: 100% !important; height: auto !important; }\n";

src/vnotebook.cpp

@@ -6,7 +6,7 @@
 #include "vconfigmanager.h"
 #include "vfile.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VNotebook::VNotebook(const QString &name, const QString &path, QObject *parent)
     : QObject(parent), m_name(name)
@@ -221,7 +221,7 @@ VFile *VNotebook::tryLoadFile(const QString &p_path)
 const QString &VNotebook::getImageFolder() const
 {
     if (m_imageFolder.isEmpty()) {
-        return vconfig.getImageFolder();
+        return g_config->getImageFolder();
     } else {
         return m_imageFolder;
     }

src/vnotebookselector.cpp

@@ -21,7 +21,7 @@
 #include "veditarea.h"
 #include "vnofocusitemdelegate.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 extern VNote *g_vnote;
 
 const int VNotebookSelector::c_notebookStartIdx = 1;
@@ -68,7 +68,7 @@ void VNotebookSelector::initActions()
 
 void VNotebookSelector::updateComboBox()
 {
-    int index = vconfig.getCurNotebookIndex();
+    int index = g_config->getCurNotebookIndex();
 
     disconnect(this, SIGNAL(currentIndexChanged(int)),
                this, SLOT(handleCurIndexChanged(int)));
@@ -85,7 +85,7 @@ void VNotebookSelector::updateComboBox()
             this, SLOT(handleCurIndexChanged(int)));
 
     if (m_notebooks.isEmpty()) {
-        vconfig.setCurNotebookIndex(-1);
+        g_config->setCurNotebookIndex(-1);
         setCurrentIndex(0);
     } else {
         setCurrentIndexNotebook(index);
@@ -140,7 +140,7 @@ void VNotebookSelector::handleCurIndexChanged(int p_index)
         tooltip = nb->getName();
     }
     setToolTip(tooltip);
-    vconfig.setCurNotebookIndex(p_index);
+    g_config->setCurNotebookIndex(p_index);
     emit curNotebookChanged(nb);
 }
 
@@ -200,13 +200,13 @@ void VNotebookSelector::createNotebook(const QString &p_name,
         VUtils::showMessage(QMessageBox::Warning, tr("Warning"),
                             tr("Fail to create notebook "
                                "<span style=\"%1\">%2</span> in <span style=\"%1\">%3</span>.")
-                            .arg(vconfig.c_dataTextStyle).arg(p_name).arg(p_path), "",
+                            .arg(g_config->c_dataTextStyle).arg(p_name).arg(p_path), "",
                             QMessageBox::Ok, QMessageBox::Ok, this);
         return;
     }
 
     m_notebooks.append(nb);
-    vconfig.setNotebooks(m_notebooks);
+    g_config->setNotebooks(m_notebooks);
 
     addNotebookItem(nb->getName());
     setCurrentIndexNotebook(m_notebooks.size() - 1);
@@ -240,7 +240,7 @@ void VNotebookSelector::deleteNotebook(VNotebook *p_notebook, bool p_deleteFiles
     int idx = indexOfNotebook(p_notebook);
 
     m_notebooks.remove(idx);
-    vconfig.setNotebooks(m_notebooks);
+    g_config->setNotebooks(m_notebooks);
 
     removeNotebookItem(idx);
 
@@ -253,7 +253,7 @@ void VNotebookSelector::deleteNotebook(VNotebook *p_notebook, bool p_deleteFiles
                                       tr("Fail to delete the root folder of notebook "
                                          "<span style=\"%1\">%2</span> from disk. You may open "
                                          "the folder and check it manually.")
-                                        .arg(vconfig.c_dataTextStyle).arg(name), "",
+                                        .arg(g_config->c_dataTextStyle).arg(name), "",
                                       QMessageBox::Open | QMessageBox::Ok,
                                       QMessageBox::Ok, this);
         if (cho == QMessageBox::Open) {
@@ -297,7 +297,7 @@ void VNotebookSelector::editNotebookInfo()
             updated = true;
             notebook->rename(name);
             updateComboBoxItem(index, name);
-            vconfig.setNotebooks(m_notebooks);
+            g_config->setNotebooks(m_notebooks);
         }
 
         QString imageFolder = dialog.getImageFolder();

src/vorphanfile.cpp

@@ -6,7 +6,7 @@
 #include "utils/vutils.h"
 #include "vconfigmanager.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VOrphanFile::VOrphanFile(const QString &p_path, QObject *p_parent,
                          bool p_modifiable, bool p_systemFile)
@@ -51,7 +51,7 @@ QString VOrphanFile::retriveImagePath() const
 {
     QString folder = m_imageFolder;
     if (m_imageFolder.isEmpty()) {
-        folder = vconfig.getImageFolderExt();
+        folder = g_config->getImageFolderExt();
     }
 
     QFileInfo fi(folder);
@@ -140,7 +140,7 @@ bool VOrphanFile::isRelativeImageFolder() const
 {
     QString folder = m_imageFolder;
     if (m_imageFolder.isEmpty()) {
-        folder = vconfig.getImageFolderExt();
+        folder = g_config->getImageFolderExt();
     }
 
     return !QFileInfo(folder).isAbsolute();
@@ -150,7 +150,7 @@ QString VOrphanFile::getImageFolderInLink() const
 {
     QString folder = m_imageFolder;
     if (m_imageFolder.isEmpty()) {
-        folder = vconfig.getImageFolderExt();
+        folder = g_config->getImageFolderExt();
     }
 
     return folder;

src/voutline.cpp

@@ -8,10 +8,8 @@
 #include "vtoc.h"
 #include "utils/vutils.h"
 #include "vnote.h"
-#include "vconfigmanager.h"
 
 extern VNote *g_vnote;
-extern VConfigManager vconfig;
 
 VOutline::VOutline(QWidget *parent)
     : QTreeWidget(parent), VNavigationMode()

src/vvimindicator.cpp

@@ -14,7 +14,7 @@
 #include "vbuttonwithwidget.h"
 #include "vedittab.h"
 
-extern VConfigManager vconfig;
+extern VConfigManager *g_config;
 
 VVimIndicator::VVimIndicator(QWidget *p_parent)
     : QWidget(p_parent), m_vim(NULL)
@@ -187,23 +187,23 @@ static QString modeBackgroundColor(VimMode p_mode)
 
     switch (p_mode) {
     case VimMode::Normal:
-       color = vconfig.getEditorVimNormalBg();
+       color = g_config->getEditorVimNormalBg();
        break;
 
     case VimMode::Insert:
-       color = vconfig.getEditorVimInsertBg();
+       color = g_config->getEditorVimInsertBg();
        break;
 
     case VimMode::Visual:
-       color = vconfig.getEditorVimVisualBg();
+       color = g_config->getEditorVimVisualBg();
        break;
 
     case VimMode::VisualLine:
-       color = vconfig.getEditorVimVisualBg();
+       color = g_config->getEditorVimVisualBg();
        break;
 
     case VimMode::Replace:
-       color = vconfig.getEditorVimReplaceBg();
+       color = g_config->getEditorVimReplaceBg();
        break;
 
     default: