[Spreadsheet] Remove alias from dynamic properties on removeRows/Columns

When removing a row in a spreadsheet which has an assigned alias, the
alias will not be removed from the list of dynamic properties.

This makes it impossible to create a new alias which uses the same name
even if the original was removed (using removeRows/removeColumns)

Fixes #4492

src/Mod/Spreadsheet/App/PropertySheet.cpp

@@ -741,6 +741,18 @@ bool PropertySheet::rowSortFunc(const CellAddress & a, const CellAddress & b) {
         return false;
 }
 
+std::vector<CellAddress> PropertySheet::getRows(int row, int count) const
+{
+    std::vector<CellAddress> keys;
+
+    for (const auto &i : data) {
+        auto key = i.first;
+        if (key.row() >= row && key.row() < row + count)
+            keys.push_back(key);
+    }
+    return keys;
+}
+
 void PropertySheet::removeRows(int row, int count)
 {
     std::vector<CellAddress> keys;
@@ -849,6 +861,18 @@ bool PropertySheet::colSortFunc(const CellAddress & a, const CellAddress & b) {
         return false;
 }
 
+std::vector<CellAddress> PropertySheet::getColumns(int column, int count) const
+{
+    std::vector<CellAddress> keys;
+
+    for (const auto &i : data) {
+        auto key = i.first;
+        if (key.col() >= column && key.col() < column + count)
+            keys.push_back(key);
+    }
+    return keys;
+}
+
 void PropertySheet::removeColumns(int col, int count)
 {
     std::vector<CellAddress> keys;

src/Mod/Spreadsheet/App/PropertySheet.h

@@ -130,10 +130,14 @@ public:
 
     void insertRows(int row, int count);
 
+    std::vector<App::CellAddress> getRows(int row, int count) const;
+
     void removeRows(int row, int count);
 
     void insertColumns(int col, int count);
 
+    std::vector<App::CellAddress> getColumns(int column, int count) const;
+
     void removeColumns(int col, int count);
 
     virtual unsigned int getMemSize (void) const override;

src/Mod/Spreadsheet/App/Sheet.cpp

@@ -1135,6 +1135,14 @@ void Sheet::insertColumns(int col, int count)
 
 void Sheet::removeColumns(int col, int count)
 {
+    // Remove aliases, if defined
+    for (auto address : cells.getColumns(col, count)) {
+        auto cell = getCell(address);
+        std::string aliasStr;
+        if (cell && cell->getAlias(aliasStr))
+            removeDynamicProperty(aliasStr.c_str());
+    }
+
     cells.removeColumns(col, count);
     updateColumnsOrRows(true,col,-count);
 }
@@ -1163,6 +1171,14 @@ void Sheet::insertRows(int row, int count)
 
 void Sheet::removeRows(int row, int count)
 {
+    // Remove aliases, if defined
+    for (auto address : cells.getRows(row, count)) {
+        auto cell = getCell(address);
+        std::string aliasStr;
+        if (cell && cell->getAlias(aliasStr))
+            removeDynamicProperty(aliasStr.c_str());
+    }
+
     cells.removeRows(row, count);
     updateColumnsOrRows(false,row,-count);
 }

src/Mod/Spreadsheet/TestSpreadsheet.py

@@ -1073,6 +1073,14 @@ class SpreadsheetCases(unittest.TestCase):
         self.doc.recompute()
         self.assertEqual(sheet.A3, 3)
 
+    def testRemoveRowsAliasReuseName(self):
+        """ Regression test for issue 4492; deleted aliases remains in database"""
+        sheet = self.doc.addObject('Spreadsheet::Sheet','Spreadsheet')
+        sheet.setAlias('B2', 'test')
+        self.doc.recompute()
+        sheet.removeRows('2', 1)
+        sheet.setAlias('B3','test')
+
     def testRemoveColumnsAlias(self):
         """ Regression test for issue 4429; remove columns from sheet with aliases"""
         sheet = self.doc.addObject('Spreadsheet::Sheet','Spreadsheet')
@@ -1086,6 +1094,14 @@ class SpreadsheetCases(unittest.TestCase):
         self.doc.recompute()
         self.assertEqual(sheet.C1, 3)
 
+    def testRemoveColumnsAliasReuseName(self):
+        """ Regression test for issue 4492; deleted aliases remains in database"""
+        sheet = self.doc.addObject('Spreadsheet::Sheet','Spreadsheet')
+        sheet.setAlias('B2', 'test')
+        self.doc.recompute()
+        sheet.removeColumns('B', 1)
+        sheet.setAlias('C3','test')
+
     def tearDown(self):
         #closing doc
         FreeCAD.closeDocument(self.doc.Name)