disable newNoteAct if FileList's directory is not set

Signed-off-by: Le Tan <tamlokveer@gmail.com>

src/vfilelist.cpp

@@ -69,6 +69,7 @@ void VFileList::setDirectory(QJsonObject dirJson)
     fileList->clear();
     if (dirJson.isEmpty()) {
         clearDirectoryInfo();
+        emit directoryChanged("", "");
         return;
     }
 
@@ -85,6 +86,8 @@ void VFileList::setDirectory(QJsonObject dirJson)
     Q_ASSERT(!rootPath.isEmpty());
 
     updateFileList();
+
+    emit directoryChanged(notebook, relativePath);
 }
 
 void VFileList::clearDirectoryInfo()

src/vfilelist.h

@@ -26,6 +26,7 @@ signals:
     void fileCreated(QJsonObject fileJson);
     void fileRenamed(const QString &notebook, const QString &oldPath,
                      const QString &newPath);
+    void directoryChanged(const QString &notebook, const QString &relativePath);
 
 private slots:
     void contextMenuRequested(QPoint pos);

src/vmainwindow.cpp

@@ -102,6 +102,8 @@ void VMainWindow::setupUI()
             fileList, &VFileList::setDirectory);
     connect(directoryTree, &VDirectoryTree::directoryRenamed,
             fileList, &VFileList::handleDirectoryRenamed);
+    connect(fileList, &VFileList::directoryChanged,
+            this, &VMainWindow::handleFileListDirectoryChanged);
 
     connect(fileList, &VFileList::fileClicked,
             tabs, &VTabWidget::openFile);
@@ -266,6 +268,7 @@ void VMainWindow::initToolBar()
     fileToolBar->addAction(discardExitAct);
     fileToolBar->addAction(saveNoteAct);
 
+    newNoteAct->setEnabled(false);
     editNoteAct->setEnabled(false);
     saveExitAct->setVisible(false);
     discardExitAct->setVisible(false);
@@ -695,3 +698,12 @@ void VMainWindow::changeSplitterView(int nrPanel)
         qWarning() << "error: invalid panel number" << nrPanel;
     }
 }
+
+void VMainWindow::handleFileListDirectoryChanged(const QString &notebook, const QString &relativePath)
+{
+    if (relativePath.isEmpty()) {
+        newNoteAct->setEnabled(false);
+    } else {
+        newNoteAct->setEnabled(true);
+    }
+}

src/vmainwindow.h

@@ -47,6 +47,7 @@ private slots:
     void updateToolbarFromTabChage(const QString &notebook, const QString &relativePath,
                                    bool editMode, bool modifiable);
     void changePanelView(QAction *action);
+    void handleFileListDirectoryChanged(const QString &notebook, const QString &relativePath);
 
 signals:
     void curNotebookChanged(const QString &notebookName);