diff --git a/src/vconfigmanager.cpp b/src/vconfigmanager.cpp
index 7e6a5130..f7912f0f 100644
--- a/src/vconfigmanager.cpp
+++ b/src/vconfigmanager.cpp
@@ -436,10 +436,15 @@ bool VConfigManager::outputDefaultEditorStyle() const
     return true;
 }
 
+// The URL will be used in the Web page.
 QString VConfigManager::getTemplateCssUrl()
 {
-    QString cssPath = getStyleConfigFolder() + QDir::separator() + m_templateCss + ".css";
-    if (!QFile::exists(cssPath)) {
+    QString cssPath = getStyleConfigFolder() +
+                      QDir::separator() +
+                      m_templateCss + ".css";
+    QUrl cssUrl = QUrl::fromLocalFile(cssPath);
+    cssPath = cssUrl.toString();
+    if (!QFile::exists(cssUrl.toLocalFile())) {
         // Specified css not exists.
         if (m_templateCss == "default") {
             bool ret = outputDefaultCssStyle();
diff --git a/src/vdirectorytree.h b/src/vdirectorytree.h
index 2a54130e..6d93fe51 100644
--- a/src/vdirectorytree.h
+++ b/src/vdirectorytree.h
@@ -25,10 +25,10 @@ public:
     inline const VNotebook *currentNotebook() const;
 
     // Implementations for VNavigationMode.
-    void registerNavigation(QChar p_majorKey);
-    void showNavigation();
-    void hideNavigation();
-    bool handleKeyNavigation(int p_key, bool &p_succeed);
+    void registerNavigation(QChar p_majorKey) Q_DECL_OVERRIDE;
+    void showNavigation() Q_DECL_OVERRIDE;
+    void hideNavigation() Q_DECL_OVERRIDE;
+    bool handleKeyNavigation(int p_key, bool &p_succeed) Q_DECL_OVERRIDE;
 
 signals:
     void currentDirectoryChanged(VDirectory *p_directory);
diff --git a/src/vedit.cpp b/src/vedit.cpp
index 87313e5c..13cc6442 100644
--- a/src/vedit.cpp
+++ b/src/vedit.cpp
@@ -509,37 +509,39 @@ void VEdit::contextMenuEvent(QContextMenuEvent *p_event)
 
     const QList<QAction *> actions = menu->actions();
 
-    VEditTab *editTab = dynamic_cast<VEditTab *>(parent());
-    V_ASSERT(editTab);
-    if (editTab->getIsEditMode()) {
-        QAction *saveExitAct = new QAction(QIcon(":/resources/icons/save_exit.svg"),
-                                           tr("&Save Changes And Read"), this);
-        saveExitAct->setToolTip(tr("Save changes and exit edit mode"));
-        connect(saveExitAct, &QAction::triggered,
-                this, &VEdit::handleSaveExitAct);
+    if (!textCursor().hasSelection()) {
+        VEditTab *editTab = dynamic_cast<VEditTab *>(parent());
+        V_ASSERT(editTab);
+        if (editTab->getIsEditMode()) {
+            QAction *saveExitAct = new QAction(QIcon(":/resources/icons/save_exit.svg"),
+                                               tr("&Save Changes And Read"), this);
+            saveExitAct->setToolTip(tr("Save changes and exit edit mode"));
+            connect(saveExitAct, &QAction::triggered,
+                    this, &VEdit::handleSaveExitAct);
 
-        QAction *discardExitAct = new QAction(QIcon(":/resources/icons/discard_exit.svg"),
-                                              tr("&Discard Changes And Read"), this);
-        discardExitAct->setToolTip(tr("Discard changes and exit edit mode"));
-        connect(discardExitAct, &QAction::triggered,
-                this, &VEdit::handleDiscardExitAct);
+            QAction *discardExitAct = new QAction(QIcon(":/resources/icons/discard_exit.svg"),
+                                                  tr("&Discard Changes And Read"), this);
+            discardExitAct->setToolTip(tr("Discard changes and exit edit mode"));
+            connect(discardExitAct, &QAction::triggered,
+                    this, &VEdit::handleDiscardExitAct);
 
-        menu->insertAction(actions.isEmpty() ? NULL : actions[0], discardExitAct);
-        menu->insertAction(discardExitAct, saveExitAct);
-        if (!actions.isEmpty()) {
-            menu->insertSeparator(actions[0]);
-        }
-    } else if (m_file->isModifiable()) {
-        // HTML.
-        QAction *editAct= new QAction(QIcon(":/resources/icons/edit_note.svg"),
-                                      tr("&Edit"), this);
-        editAct->setToolTip(tr("Edit current note"));
-        connect(editAct, &QAction::triggered,
-                this, &VEdit::handleEditAct);
-        menu->insertAction(actions.isEmpty() ? NULL : actions[0], editAct);
-        // actions does not contain editAction.
-        if (!actions.isEmpty()) {
-            menu->insertSeparator(actions[0]);
+            menu->insertAction(actions.isEmpty() ? NULL : actions[0], discardExitAct);
+            menu->insertAction(discardExitAct, saveExitAct);
+            if (!actions.isEmpty()) {
+                menu->insertSeparator(actions[0]);
+            }
+        } else if (m_file->isModifiable()) {
+            // HTML.
+            QAction *editAct= new QAction(QIcon(":/resources/icons/edit_note.svg"),
+                                          tr("&Edit"), this);
+            editAct->setToolTip(tr("Edit current note"));
+            connect(editAct, &QAction::triggered,
+                    this, &VEdit::handleEditAct);
+            menu->insertAction(actions.isEmpty() ? NULL : actions[0], editAct);
+            // actions does not contain editAction.
+            if (!actions.isEmpty()) {
+                menu->insertSeparator(actions[0]);
+            }
         }
     }
 
diff --git a/src/veditarea.h b/src/veditarea.h
index f4b8a892..8a171f76 100644
--- a/src/veditarea.h
+++ b/src/veditarea.h
@@ -52,10 +52,10 @@ public:
     VEditWindow *getCurrentWindow() const;
 
     // Implementations for VNavigationMode.
-    void registerNavigation(QChar p_majorKey);
-    void showNavigation();
-    void hideNavigation();
-    bool handleKeyNavigation(int p_key, bool &p_succeed);
+    void registerNavigation(QChar p_majorKey) Q_DECL_OVERRIDE;
+    void showNavigation() Q_DECL_OVERRIDE;
+    void hideNavigation() Q_DECL_OVERRIDE;
+    bool handleKeyNavigation(int p_key, bool &p_succeed) Q_DECL_OVERRIDE;
 
 signals:
     void curTabStatusChanged(const VFile *p_file, const VEditTab *p_editTab, bool p_editMode);
diff --git a/src/vfilelist.h b/src/vfilelist.h
index 1fd57cdf..e4f40989 100644
--- a/src/vfilelist.h
+++ b/src/vfilelist.h
@@ -35,10 +35,10 @@ public:
     inline const VDirectory *currentDirectory() const;
 
     // Implementations for VNavigationMode.
-    void registerNavigation(QChar p_majorKey);
-    void showNavigation();
-    void hideNavigation();
-    bool handleKeyNavigation(int p_key, bool &p_succeed);
+    void registerNavigation(QChar p_majorKey) Q_DECL_OVERRIDE;
+    void showNavigation() Q_DECL_OVERRIDE;
+    void hideNavigation() Q_DECL_OVERRIDE;
+    bool handleKeyNavigation(int p_key, bool &p_succeed) Q_DECL_OVERRIDE;
 
 signals:
     void fileClicked(VFile *p_file, OpenFileMode mode = OpenFileMode::Read);
diff --git a/src/vnotebookselector.h b/src/vnotebookselector.h
index b942b53d..3128e890 100644
--- a/src/vnotebookselector.h
+++ b/src/vnotebookselector.h
@@ -26,10 +26,10 @@ public:
     void showPopup() Q_DECL_OVERRIDE;
 
     // Implementations for VNavigationMode.
-    void registerNavigation(QChar p_majorKey);
-    void showNavigation();
-    void hideNavigation();
-    bool handleKeyNavigation(int p_key, bool &p_succeed);
+    void registerNavigation(QChar p_majorKey) Q_DECL_OVERRIDE;
+    void showNavigation() Q_DECL_OVERRIDE;
+    void hideNavigation() Q_DECL_OVERRIDE;
+    bool handleKeyNavigation(int p_key, bool &p_succeed) Q_DECL_OVERRIDE;
 
 signals:
     void curNotebookChanged(VNotebook *p_notebook);
diff --git a/src/voutline.h b/src/voutline.h
index 24012089..04c4f5dc 100644
--- a/src/voutline.h
+++ b/src/voutline.h
@@ -17,10 +17,10 @@ public:
     VOutline(QWidget *parent = 0);
 
     // Implementations for VNavigationMode.
-    void registerNavigation(QChar p_majorKey);
-    void showNavigation();
-    void hideNavigation();
-    bool handleKeyNavigation(int p_key, bool &p_succeed);
+    void registerNavigation(QChar p_majorKey) Q_DECL_OVERRIDE;
+    void showNavigation() Q_DECL_OVERRIDE;
+    void hideNavigation() Q_DECL_OVERRIDE;
+    bool handleKeyNavigation(int p_key, bool &p_succeed) Q_DECL_OVERRIDE;
 
 signals:
     void outlineItemActivated(const VAnchor &anchor);