Implement autosaveDelay in DatabaseWidget

Implement a autosave delay functionality to the database widget.
Added timer to track the delay and trigger a save on timeout using the new onAutosaveDelayTimeout function.
Changed the onDatabaseModified to test for the new autosaveDelay property and delay the save if needed or extend the delay on new modifications.
After menual save stop the timer to avoid saving when not needed edited in DatabaseWidget::save().

Part of issue keepassxreboot#8553

src/gui/DatabaseWidget.cpp

@@ -222,6 +222,10 @@ DatabaseWidget::DatabaseWidget(QSharedPointer<Database> db, QWidget* parent)
 
     m_blockAutoSave = false;
 
+    m_autosaveTimer = new QTimer(this);
+    m_autosaveTimer->setSingleShot(true);
+    connect(m_autosaveTimer, SIGNAL(timeout()), this, SLOT(onAutosaveDelayTimeout()));
+
     m_searchLimitGroup = config()->get(Config::SearchLimitGroup).toBool();
 
 #ifdef WITH_XC_KEESHARE
@@ -1528,13 +1532,30 @@ void DatabaseWidget::onGroupChanged()
 
 void DatabaseWidget::onDatabaseModified()
 {
-    if (!m_blockAutoSave && config()->get(Config::AutoSaveAfterEveryChange).toBool()) {
+    refreshSearch();
+    int autosaveDelayMs = m_db->metadata()->autosaveDelayMin() * 60 * 1000; // min to msec for QTimer
+    bool autosaveAfterEveryChangeConfig = config()->get(Config::AutoSaveAfterEveryChange).toBool();
+    if (m_autosaveTimer->isActive() || (autosaveDelayMs > 0 && autosaveAfterEveryChangeConfig)) {
+        // reset delay when modified
+        m_autosaveTimer->start(autosaveDelayMs);
+        return;
+    }
+    if (!m_blockAutoSave && autosaveAfterEveryChangeConfig) {
+        save();
+    } else {
+        // Only block once, then reset
+        m_blockAutoSave = false;
+    }
+}
+
+void DatabaseWidget::onAutosaveDelayTimeout()
+{
+    if (!m_blockAutoSave) {
         save();
     } else {
         // Only block once, then reset
         m_blockAutoSave = false;
     }
-    refreshSearch();
 }
 
 QString DatabaseWidget::getCurrentSearch()
@@ -1986,6 +2007,7 @@ bool DatabaseWidget::save()
     if (performSave(errorMessage)) {
         m_saveAttempts = 0;
         m_blockAutoSave = false;
+        m_autosaveTimer->stop(); // stop autosave delay to avoid triggering another save
         return true;
     }
 

src/gui/DatabaseWidget.h

@@ -251,6 +251,7 @@ private slots:
     void onEntryChanged(Entry* entry);
     void onGroupChanged();
     void onDatabaseModified();
+    void onAutosaveDelayTimeout();
     void connectDatabaseSignals();
     void loadDatabase(bool accepted);
     void unlockDatabase(bool accepted);
@@ -309,6 +310,9 @@ private slots:
     // Autoreload
     bool m_blockAutoSave;
 
+    // Autosave delay
+    QPointer<QTimer> m_autosaveTimer;
+
     // Auto-Type related
     QString m_searchStringForAutoType;
 };