2 files changed, 68 insertions, 2 deletions

diff --git a/src/ui/widgets/TextEdit.cpp b/src/ui/widgets/TextEdit.cpp
index d8c4605d..5d10ece9 100644
--- a/src/ui/widgets/TextEdit.cpp
+++ b/src/ui/widgets/TextEdit.cpp
@@ -29,6 +29,11 @@
 #include "ui/widgets/TextEdit.h"
 
 #include <boost/format.hpp>
+#include <string>
+#include <tuple>
+#include <vector>
+
+#include "spdlog/spdlog.h"
 
 namespace GpgFrontend::UI {
 
@@ -61,6 +66,8 @@ void TextEdit::SlotNewTab() {
   page->GetTextPage()->setFocus();
   connect(page->GetTextPage()->document(), &QTextDocument::modificationChanged,
           this, &TextEdit::SlotShowModified);
+  connect(page->GetTextPage()->document(), &QTextDocument::contentsChanged,
+          this, &TextEdit::slot_save_status_to_cache_for_revovery);
 }
 
 void TextEdit::slotNewHelpTab(const QString& title, const QString& path) const {
@@ -88,6 +95,9 @@ void TextEdit::SlotOpenFile(const QString& path) {
     connect(page->GetTextPage()->document(),
             &QTextDocument::modificationChanged, this,
             &TextEdit::SlotShowModified);
+    // connect to cache recovery fucntion
+    connect(page->GetTextPage()->document(), &QTextDocument::contentsChanged,
+            this, &TextEdit::slot_save_status_to_cache_for_revovery);
 
     QApplication::setOverrideCursor(Qt::WaitCursor);
     auto index = tab_widget_->addTab(page, stripped_name(path));
@@ -449,9 +459,17 @@ void TextEdit::SlotPrint() {
 #endif
 }
 
-void TextEdit::SlotShowModified() const {
+void TextEdit::SlotShowModified(bool changed) const {
+  // get current tab
   int index = tab_widget_->currentIndex();
   QString title = tab_widget_->tabText(index);
+
+  // if changed
+  if (!changed) {
+    tab_widget_->setTabText(index, title.remove(0, 2));
+    return;
+  }
+
   // if doc is modified now, add leading * to title,
   // otherwise remove the leading * from the title
   if (CurTextPage()->GetTextPage()->document()->isModified()) {
@@ -580,4 +598,43 @@ void TextEdit::slot_file_page_path_changed(const QString& path) const {
   tab_widget_->setTabText(index, mPath);
 }
 
+void TextEdit::slot_save_status_to_cache_for_revovery() {
+  SPDLOG_DEBUG("catch text page modified event, count: {}",
+               text_page_data_modified_count_);
+  if (this->text_page_data_modified_count_++ % 3 != 0) return;
+
+  int tab_count = tab_widget_->count();
+  SPDLOG_DEBUG("current tabs count {}", tab_count);
+
+  std::vector<std::pair<int, std::string>> saved_pages;
+  std::vector<std::tuple<int, std::string, std::string>> unsaved_pages;
+
+  for (int i = 0; i < tab_count; i++) {
+    auto* target_page =
+        qobject_cast<PlainTextEditorPage*>(tab_widget_->widget(i));
+
+    // if this page is no textedit, there should be nothing to save
+    if (target_page == nullptr) {
+      continue;
+    }
+
+    auto* document = target_page->GetTextPage()->document();
+    auto tab_title = tab_widget_->tabText(i).toStdString();
+    if (!target_page->ReadDone() || !target_page->isEnabled() ||
+        !document->isModified()) {
+      auto file_path = target_page->GetFilePath().toStdString();
+      SPDLOG_DEBUG("saved page index: {}, tab title: {} tab file path: {}", i,
+                   tab_title, file_path);
+
+      saved_pages.push_back({i, file_path});
+      continue;
+    }
+
+    auto raw_text = document->toRawText().toStdString();
+    SPDLOG_DEBUG("unsaved page index: {}, tab title: {} tab content: {}", i,
+                 tab_title, raw_text);
+    unsaved_pages.push_back({i, tab_title, raw_text});
+  }
+}
+
 }  // namespace GpgFrontend::UI
diff --git a/src/ui/widgets/TextEdit.h b/src/ui/widgets/TextEdit.h
index 6398cf34..2e2f949d 100644
--- a/src/ui/widgets/TextEdit.h
+++ b/src/ui/widgets/TextEdit.h
@@ -172,7 +172,7 @@ class TextEdit : public QWidget {
    * @details put a * in front of current tabs title, if current textedit is
    * modified
    */
-  void SlotShowModified() const;
+  void SlotShowModified(bool) const;
 
   /**
    * @details close the current tab and decrease TabWidget->count by \a 1
@@ -193,6 +193,8 @@ class TextEdit : public QWidget {
   void SlotSwitchTabDown() const;
 
  private:
+  uint text_page_data_modified_count_ = 0;  ///<
+
   /**
    * @details return just a filename stripped of a whole path
    *
@@ -221,6 +223,13 @@ class TextEdit : public QWidget {
    */
   void slot_remove_tab(int index);
 
+  /**
+   * @brief
+   *
+   * @param index
+   */
+  void slot_save_status_to_cache_for_revovery();
+
  public slots:
 
   /**