UI: StatisticsPage: Add "Clear" button.

src/ui/db/databasemanager.cpp

@@ -11,9 +11,6 @@
 DatabaseManager::DatabaseManager(const QString &filePath,
                                  QObject *parent) :
     QObject(parent),
-    m_lastTrafHour(0),
-    m_lastTrafDay(0),
-    m_lastTrafMonth(0),
     m_filePath(filePath),
     m_conf(nullptr),
     m_sqliteDb(new SqliteDb())
@@ -23,7 +20,7 @@ DatabaseManager::DatabaseManager(const QString &filePath,
 
 DatabaseManager::~DatabaseManager()
 {
-    qDeleteAll(m_sqliteStmts);
+    clearStmts();
 
     delete m_sqliteDb;
 
@@ -43,6 +40,8 @@ bool DatabaseManager::initialize()
 {
     const bool fileExists = FileUtil::fileExists(m_filePath);
 
+    m_lastTrafHour = m_lastTrafDay = m_lastTrafMonth = 0;
+
     if (!m_sqliteDb->open(m_filePath))
         return false;
 
@@ -51,6 +50,23 @@ bool DatabaseManager::initialize()
     return fileExists || createTables();
 }
 
+void DatabaseManager::clear()
+{
+    clearStmts();
+
+    m_sqliteDb->close();
+
+    FileUtil::removeFile(m_filePath);
+
+    initialize();
+}
+
+void DatabaseManager::clearStmts()
+{
+    qDeleteAll(m_sqliteStmts);
+    m_sqliteStmts.clear();
+}
+
 qint64 DatabaseManager::logProcNew(const QString &appPath, bool &isNew)
 {
     if (m_conf && !m_conf->logStat())

src/ui/db/databasemanager.h

@@ -44,12 +44,15 @@ public:
 signals:
 
 public slots:
+    void clear();
 
 private:
     typedef QList<SqliteStmt *> QStmtList;
 
     bool createTables();
 
+    void clearStmts();
+
     qint64 createAppId(const QString &appPath);
 
     void updateTrafficList(const QStmtList &insertStmtList,

src/ui/i18n/i18n_ru.ts

@@ -167,6 +167,7 @@
     </message>
     <message>
         <location filename="../qml/pages/BlockedPage.qml" line="39"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="48"/>
         <source>Clear</source>
         <translation>Очистить</translation>
     </message>
@@ -411,66 +412,66 @@
         <translation>TiB</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="48"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="55"/>
         <source>Refresh</source>
         <translation>Обновить</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="58"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="65"/>
         <source>Units:</source>
         <translation>Единицы:</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="85"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="92"/>
         <source>Collect Traffic Statistics</source>
         <translation>Собирать статистику трафика</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="116"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="123"/>
         <source>All</source>
         <translation>Все</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="133"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="140"/>
         <source>Hourly</source>
         <comment>Stat</comment>
         <translation>Почасовая</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="137"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="144"/>
         <source>Daily</source>
         <comment>Stat</comment>
         <translation>Ежедневная</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="141"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="148"/>
         <source>Monthly</source>
         <comment>Stat</comment>
         <translation>Ежемесячная</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="145"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="152"/>
         <source>Total</source>
         <comment>Stat</comment>
         <translation>Общая</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="156"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="163"/>
         <source>Date</source>
         <translation>Дата</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="161"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="168"/>
         <source>Download</source>
         <translation>Загрузка</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="166"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="173"/>
         <source>Upload</source>
         <translation>Выгрузка</translation>
     </message>
     <message>
-        <location filename="../qml/pages/StatisticsPage.qml" line="171"/>
+        <location filename="../qml/pages/StatisticsPage.qml" line="178"/>
         <source>Sum</source>
         <translation>Сумма</translation>
     </message>

src/ui/log/model/appstatmodel.cpp

@@ -29,7 +29,9 @@ TrafListModel *AppStatModel::trafListModel(int trafType, int row) const
 
 void AppStatModel::clear()
 {
-    StringListModel::clear();
+    m_trafListModel->clear();
+
+    updateList();
 }
 
 void AppStatModel::updateList()

src/ui/log/model/traflistmodel.cpp

@@ -91,6 +91,9 @@ QHash<int, QByteArray> TrafListModel::roleNames() const
 
 void TrafListModel::clear()
 {
+    m_databaseManager->clear();
+
+    reset();
 }
 
 void TrafListModel::updateRowCache(int row) const

src/ui/qml/pages/StatisticsPage.qml

@@ -18,10 +18,10 @@ BasePage {
         ? appListView.currentItem.appPath : ""
 
     readonly property var trafCellWidths: [
-        trafsContainer.width * 0.4,
+        trafsContainer.width * 0.34,
-        trafsContainer.width * 0.2,
+        trafsContainer.width * 0.22,
-        trafsContainer.width * 0.2,
+        trafsContainer.width * 0.22,
-        trafsContainer.width * 0.2
+        trafsContainer.width * 0.22
     ]
 
     readonly property var trafUnitNames:
@@ -43,7 +43,18 @@ BasePage {
             spacing: 15
 
             Button {
-                enabled: appListView.currentIndex >= 0
+                enabled: appListView.count
+                text: translationManager.dummyBool
+                      && qsTranslate("qml", "Clear")
+                onClicked: {
+                    appStatModel.clear();
+
+                    appListView.currentIndex = 0;
+                }
+            }
+
+            Button {
+                enabled: appListView.count
                 text: translationManager.dummyBool
                       && qsTranslate("qml", "Refresh")
                 onClicked: trafListModel.refresh()