enhancement: preserve field filters when switching tab

src/FilterTableHeader.cpp

@@ -75,7 +75,7 @@ void FilterTableHeader::generateFilters(int number, bool bKeepValues)
         FilterLineEdit* l = new FilterLineEdit(this, &filterWidgets, i);
         l->setVisible(i>0);                     // This hides the first input widget which belongs to the hidden rowid column
         connect(l, SIGNAL(textChanged(QString)), this, SLOT(inputChanged(QString)));
-        if(bKeepValues && !oldvalues[i].isEmpty())  // restore old values
+        if(bKeepValues && oldvalues.size() > i && !oldvalues[i].isEmpty())  // restore old values
             l->setText(oldvalues[i]);
         filterWidgets.push_back(l);
     }
@@ -123,3 +123,9 @@ void FilterTableHeader::inputChanged(const QString& new_value)
     // Just get the column number and the new value and send them to anybody interested in filter changes
     emit filterChanged(sender()->property("column").toInt(), new_value);
 }
+
+void FilterTableHeader::clearFilters()
+{
+    foreach (FilterLineEdit* filterLineEdit, filterWidgets)
+        filterLineEdit->clear();
+}

src/FilterTableHeader.h

@@ -19,6 +19,7 @@ public:
 public slots:
     void generateFilters(int number, bool bKeepValues = false);
     void adjustPositions();
+    void clearFilters();
 
 signals:
     void filterChanged(int column, QString value);

src/MainWindow.cpp

@@ -388,7 +388,7 @@ void MainWindow::resetBrowser()
     curBrowseOrderByIndex = 0;
     curBrowseOrderByMode = Qt::AscendingOrder;
     m_browseTableModel->sort(curBrowseOrderByIndex, curBrowseOrderByMode);
-    populateTable(ui->comboBrowseTable->currentText());
+    populateTable(ui->comboBrowseTable->currentText(), true);
 }
 
 void MainWindow::fileClose()
@@ -1106,6 +1106,7 @@ void MainWindow::activateFields(bool enable)
     ui->actionSqlSaveFile->setEnabled(enable);
     ui->actionSaveProject->setEnabled(enable);
     ui->actionEncryption->setEnabled(enable);
+    ui->buttonClearFilters->setEnabled(enable);
 }
 
 void MainWindow::browseTableHeaderClicked(int logicalindex)
@@ -2089,3 +2090,8 @@ void MainWindow::switchToBrowseDataTab()
     ui->comboBrowseTable->setCurrentIndex(ui->comboBrowseTable->findText(tableToBrowse));
     populateTable(tableToBrowse);
 }
+
+void MainWindow::on_buttonClearFilters_clicked()
+{
+    ui->dataTable->filterHeader()->clearFilters();
+}

src/MainWindow.h

@@ -175,6 +175,7 @@ private slots:
     void updateFilter(int column, const QString& value);
     void editEncryption();
     void switchToBrowseDataTab();
+    void on_buttonClearFilters_clicked();
 };
 
 #endif

src/MainWindow.ui

@@ -125,6 +125,20 @@
             </property>
            </widget>
           </item>
+          <item>
+           <widget class="QToolButton" name="buttonClearFilters">
+            <property name="toolTip">
+             <string>Clear all filters</string>
+            </property>
+            <property name="text">
+             <string/>
+            </property>
+            <property name="icon">
+             <iconset resource="icons/icons.qrc">
+              <normaloff>:/icons/clear_filters</normaloff>:/icons/clear_filters</iconset>
+            </property>
+           </widget>
+          </item>
           <item>
            <spacer name="horizontalSpacer">
             <property name="orientation">
@@ -310,8 +324,8 @@
             <rect>
              <x>0</x>
              <y>0</y>
-             <width>575</width>
-             <height>458</height>
+             <width>311</width>
+             <height>531</height>
             </rect>
            </property>
            <layout class="QFormLayout" name="formLayout">
@@ -796,7 +810,7 @@
      <x>0</x>
      <y>0</y>
      <width>1000</width>
-     <height>19</height>
+     <height>25</height>
     </rect>
    </property>
    <widget class="QMenu" name="fileMenu">

src/icons/icons.qrc

@@ -44,5 +44,6 @@
         <file alias="document_open">document-open.png</file>
         <file alias="function">chart_curve.png</file>
         <file alias="keyword">cog.png</file>
+        <file alias="clear_filters">clear_filters.png</file>
     </qresource>
 </RCC>