Spreadsheet: Issue #2402: Added functionality to get cell address given an alias.

src/Mod/Spreadsheet/App/PropertySheet.cpp

@@ -157,6 +157,27 @@ Cell *PropertySheet::getValue(CellAddress key)
         return i->second;
 }
 
+const Cell *PropertySheet::getValue(CellAddress key) const
+{
+    std::map<CellAddress, Cell*>::const_iterator i = data.find(key);
+
+    if (i == data.end())
+        return 0;
+    else
+        return i->second;
+}
+
+
+const Cell * PropertySheet::getValueFromAlias(const std::string &alias) const
+{
+    std::map<std::string, CellAddress>::const_iterator it = revAliasProp.find(alias);
+
+    if (it != revAliasProp.end())
+        return getValue(it->second);
+    else
+        return 0;
+}
+
 std::set<CellAddress> PropertySheet::getUsedCells() const
 {
     std::set<CellAddress> usedSet;

src/Mod/Spreadsheet/App/PropertySheet.h

@@ -81,6 +81,10 @@ public:
 
     Cell * getValue(CellAddress key);
 
+    const Cell * getValue(CellAddress key) const;
+
+    const Cell * getValueFromAlias(const std::string &alias) const;
+
     std::set<CellAddress> getUsedCells() const;
 
     Sheet * sheet() const { return owner; }

src/Mod/Spreadsheet/App/Sheet.cpp

@@ -1131,6 +1131,21 @@ void Sheet::setComputedUnit(CellAddress address, const Base::Unit &unit)
 void Sheet::setAlias(CellAddress address, const std::string &alias)
 {
     cells.setAlias(address, alias);
+/**
+ * @brief Get cell given an alias string
+ * @param alias Alias for cell
+ *
+ * @returns Name of cell, or empty string if not defined
+ */
+
+std::string Sheet::getAddressFromAlias(const std::string &alias) const
+{
+    const Cell * cell = cells.getValueFromAlias(alias);
+
+    if (cell)
+        return cell->getAddress().toString();
+    else
+        return std::string();
 }
 
 /**

src/Mod/Spreadsheet/App/Sheet.h

@@ -140,6 +140,8 @@ public:
 
     void setAlias(CellAddress address, const std::string & alias);
 
+    std::string getAddressFromAlias(const std::string & alias) const;
+
     void setSpans(CellAddress address, int rows, int columns);
 
     std::set<std::string> dependsOn(CellAddress address) const;

src/Mod/Spreadsheet/App/SheetPy.xml

@@ -110,6 +110,11 @@
         <UserDocu>Set alias for cell address</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="getCellFromAlias">
+      <Documentation>
+        <UserDocu>Get cell address given an alias</UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="getDisplayUnit">
       <Documentation>
         <UserDocu>Get display unit for cell</UserDocu>

src/Mod/Spreadsheet/App/SheetPyImp.cpp

@@ -457,6 +457,29 @@ PyObject* SheetPy::setAlias(PyObject *args)
     }
 }
 
+PyObject* SheetPy::getCellFromAlias(PyObject *args)
+{
+    const char * alias;
+
+    if (!PyArg_ParseTuple(args, "s:getAlias", &alias))
+        return 0;
+
+    try {
+        std::string address = getSheetPtr()->getAddressFromAlias(alias);
+
+        if (address.size() > 0)
+            return Py::new_reference_to( Py::String( address ) );
+        else {
+            Py_INCREF(Py_None);
+            return Py_None;
+        }
+    }
+    catch (const Base::Exception & e) {
+        PyErr_SetString(PyExc_ValueError, e.what());
+        return 0;
+    }
+}
+
 PyObject* SheetPy::getDisplayUnit(PyObject *args)
 {
     const char * strAddress;