feat: support drop down and open directory

5 files changed, 80 insertions, 45 deletions

diff --git a/src/ui/widgets/FileTreeView.h b/src/ui/widgets/FileTreeView.h
index 41ef014d..d99ff605 100644
--- a/src/ui/widgets/FileTreeView.h
+++ b/src/ui/widgets/FileTreeView.h
@@ -33,6 +33,12 @@ namespace GpgFrontend::UI {
 class FileTreeView : public QTreeView {
   Q_OBJECT
  public:
+  /**
+   * @brief Construct a new File Tree View object
+   *
+   * @param parent
+   * @param target_path
+   */
   explicit FileTreeView(QWidget* parent, const QString& target_path);
 
   /**
diff --git a/src/ui/widgets/TextEdit.cpp b/src/ui/widgets/TextEdit.cpp
index a742d49d..d0cfe58e 100644
--- a/src/ui/widgets/TextEdit.cpp
+++ b/src/ui/widgets/TextEdit.cpp
@@ -72,18 +72,11 @@ void TextEdit::SlotNewHelpTab(const QString& title, const QString& path) const {
 }
 
 void TextEdit::SlotNewFileTab() {
-  auto const target_dir = QFileDialog::getExistingDirectory(
+  auto const target_directory = QFileDialog::getExistingDirectory(
       this, tr("Open Directory"), QDir::home().path(),
       QFileDialog::ShowDirsOnly | QFileDialog::DontResolveSymlinks);
-  if (target_dir.isEmpty()) return;
-
-  auto* page = new FilePage(qobject_cast<QWidget*>(parent()), target_dir);
-  auto index = tab_widget_->addTab(page, QString());
-  tab_widget_->setTabIcon(index, QIcon(":/icons/file-browser.png"));
-  tab_widget_->setCurrentIndex(tab_widget_->count() - 1);
-  connect(page, &FilePage::SignalPathChanged, this,
-          &TextEdit::slot_file_page_path_changed);
-  page->SlotGoPath();
+  if (target_directory.isEmpty()) return;
+  tab_widget_->SlotOpenDirectory(target_directory);
 }
 
 void TextEdit::SlotOpenFile(const QString& path) {
@@ -556,20 +549,4 @@ void TextEdit::SlotSelectAll() const {
   }
   CurTextPage()->GetTextPage()->selectAll();
 }
-
-void TextEdit::slot_file_page_path_changed(const QString& path) const {
-  int index = tab_widget_->currentIndex();
-  QString m_path;
-  QFileInfo file_info(path);
-  QString t_path = file_info.absoluteFilePath();
-  if (path.size() > 18) {
-    m_path = t_path.mid(t_path.size() - 18, 18).prepend("...");
-  } else {
-    m_path = t_path;
-  }
-  tab_widget_->setTabText(index, m_path);
-
-  emit UISignalStation::GetInstance()
-      -> SignalMainWindowlUpdateBasicalOperaMenu(0);
-}
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/TextEdit.h b/src/ui/widgets/TextEdit.h
index 4b893a3a..5219196f 100644
--- a/src/ui/widgets/TextEdit.h
+++ b/src/ui/widgets/TextEdit.h
@@ -275,8 +275,6 @@ class TextEdit : public QWidget {
 
  private slots:
 
-  void slot_file_page_path_changed(const QString& path) const;
-
   /**
    * @details Remove the tab with given index
    *
diff --git a/src/ui/widgets/TextEditTabWidget.cpp b/src/ui/widgets/TextEditTabWidget.cpp
index c782e868..110302be 100644
--- a/src/ui/widgets/TextEditTabWidget.cpp
+++ b/src/ui/widgets/TextEditTabWidget.cpp
@@ -30,6 +30,7 @@
 
 #include "core/function/GlobalSettingStation.h"
 #include "core/model/CacheObject.h"
+#include "ui/UISignalStation.h"
 #include "ui/widgets/PlainTextEditorPage.h"
 #include "widgets/FilePage.h"
 
@@ -60,25 +61,38 @@ void TextEditTabWidget::dropEvent(QDropEvent* event) {
       continue;
     }
 
-    QFile file(local_file);
-    if (!file.open(QIODevice::ReadOnly)) {
-      QMessageBox::warning(
-          this, tr("File Open Error"),
-          tr("The file \"%1\" could not be opened.").arg(file_info.fileName()));
-      continue;
-    }
-    QByteArray file_data = file.read(1024);
-    file.close();
-
-    if (file_data.contains('\0')) {
-      QMessageBox::warning(this, tr("Binary File Detected"),
-                           tr("The file \"%1\" appears to be a binary file "
-                              "and will not be opened.")
-                               .arg(file_info.fileName()));
-      continue;
+    if (file_info.isFile()) {
+      QFile file(local_file);
+      if (!file.open(QIODevice::ReadOnly)) {
+        QMessageBox::warning(this, tr("File Open Error"),
+                             tr("The file \"%1\" could not be opened.")
+                                 .arg(file_info.fileName()));
+        continue;
+      }
+      QByteArray file_data = file.read(1024);
+      file.close();
+
+      if (file_data.contains('\0')) {
+        QMessageBox::warning(this, tr("Binary File Detected"),
+                             tr("The file \"%1\" appears to be a binary file "
+                                "and will not be opened.")
+                                 .arg(file_info.fileName()));
+        continue;
+      }
+
+      SlotOpenFile(local_file);
     }
 
-    SlotOpenFile(local_file);
+    if (file_info.isDir()) {
+      if (!file_info.isReadable()) {
+        QMessageBox::warning(
+            this, tr("Directory Permission Denied"),
+            tr("You do not have permission to access the directory \"%1\".")
+                .arg(file_info.fileName()));
+        continue;
+      }
+      SlotOpenDirectory(file_info.absoluteFilePath());
+    }
   }
 
   event->acceptProposedAction();
@@ -239,4 +253,31 @@ void TextEditTabWidget::SlotNewTabWithContent(QString title,
   // set content with modified status
   page->GetTextPage()->document()->setPlainText(content);
 }
+
+void TextEditTabWidget::SlotOpenDirectory(const QString& target_directory) {
+  auto* page = new FilePage(qobject_cast<QWidget*>(parent()), target_directory);
+  auto index = this->addTab(page, QString());
+  this->setTabIcon(index, QIcon(":/icons/file-browser.png"));
+  this->setCurrentIndex(this->count() - 1);
+  connect(page, &FilePage::SignalPathChanged, this,
+          &TextEditTabWidget::slot_file_page_path_changed);
+  page->SlotGoPath();
+}
+
+void TextEditTabWidget::slot_file_page_path_changed(const QString& path) {
+  int index = this->currentIndex();
+  QString m_path;
+  QFileInfo file_info(path);
+  QString t_path = file_info.absoluteFilePath();
+  if (path.size() > 18) {
+    m_path = t_path.mid(t_path.size() - 18, 18).prepend("...");
+  } else {
+    m_path = t_path;
+  }
+  this->setTabText(index, m_path);
+
+  emit UISignalStation::GetInstance()
+      -> SignalMainWindowlUpdateBasicalOperaMenu(0);
+}
+
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/TextEditTabWidget.h b/src/ui/widgets/TextEditTabWidget.h
index 7c83a721..b0cafae2 100644
--- a/src/ui/widgets/TextEditTabWidget.h
+++ b/src/ui/widgets/TextEditTabWidget.h
@@ -60,6 +60,12 @@ class TextEditTabWidget : public QTabWidget {
   void SlotOpenFile(const QString& path);
 
   /**
+   * @brief
+   *
+   */
+  void SlotOpenDirectory(const QString& target_directory);
+
+  /**
    * @details put a * in front of current tabs title, if current textedit is
    * modified
    */
@@ -108,6 +114,13 @@ class TextEditTabWidget : public QTabWidget {
    */
   void slot_save_status_to_cache_for_recovery();
 
+  /**
+   * @brief
+   *
+   * @param path
+   */
+  void slot_file_page_path_changed(const QString& path);
+
  private:
   int count_page_ = 0;
   int text_page_data_modified_count_ = 0;