5 files changed, 112 insertions, 21 deletions
diff --git a/core/src/Model/Template/TableTemplate.cpp b/core/src/Model/Template/TableTemplate.cpp
index e01af02..6c3d86b 100644
--- a/core/src/Model/Template/TableTemplate.cpp
+++ b/core/src/Model/Template/TableTemplate.cpp
@@ -20,22 +20,22 @@ bool TableCell::IsMergedCell() const
 	return PrimaryCellLocation.x == -1 || PrimaryCellLocation.y == -1;
 }
 
-Vec2i TableCellArrayGroup::GetLeftCell() const
+Vec2i TableArrayGroup::GetLeftCell() const
 {
 	return { Row, LeftCell };
 }
 
-Vec2i TableCellArrayGroup::GetRightCell() const
+Vec2i TableArrayGroup::GetRightCell() const
 {
 	return { Row, RightCell };
 }
 
-int TableCellArrayGroup::GetCount() const
+int TableArrayGroup::GetCount() const
 {
 	return RightCell - LeftCell + 1;
 }
 
-Vec2i TableCellArrayGroup::FindCell(std::string_view name)
+Vec2i TableArrayGroup::FindCell(std::string_view name)
 {
 }
 
@@ -165,10 +165,11 @@ void TableTemplate::SetCellType(Vec2i pos, TableCell::CellType type)
 		case TableCell::ArrayParametricCell: {
 			auto& ag = mArrayGroups[cell.DataId];
 			if (cell.Location.x == ag.LeftCell) {
-
+				ag.LeftCell++;
 			} else if (cell.Location.x == ag.RightCell) {
-
+				ag.RightCell--;
 			} else {
+
 			}
 		} break;
 	}
@@ -205,17 +206,17 @@ int TableTemplate::GetArrayGroupCount() const
 	return mArrayGroups.size();
 }
 
-const TableCellArrayGroup& TableTemplate::GetArrayGroup(int id) const
+const TableArrayGroup& TableTemplate::GetArrayGroup(int id) const
 {
 	return mArrayGroups[id];
 }
 
-TableCellArrayGroup& TableTemplate::GetArrayGroup(int id)
+TableArrayGroup& TableTemplate::GetArrayGroup(int id)
 {
 	return mArrayGroups[id];
 }
 
-TableCellArrayGroup* TableTemplate::AddArrayGroup(int row, int left, int right)
+TableArrayGroup* TableTemplate::AddArrayGroup(int row, int left, int right)
 {
 	// size_t max value: 18446744073709551615
 	//                   ^~~~~~~~~~~~~~~~~~~~ 20 chars
@@ -226,7 +227,7 @@ TableCellArrayGroup* TableTemplate::AddArrayGroup(int row, int left, int right)
 	return AddArrayGroup(nameStr, row, left, right);
 }
 
-TableCellArrayGroup* TableTemplate::AddArrayGroup(std::string_view name, int row, int left, int right)
+TableArrayGroup* TableTemplate::AddArrayGroup(std::string_view name, int row, int left, int right)
 {
 	assert(row >= 0 && row < GetTableHeight());
 	assert(left >= 0 && left < GetTableWidth());
@@ -243,7 +244,7 @@ TableCellArrayGroup* TableTemplate::AddArrayGroup(std::string_view name, int row
 		return nullptr;
 	}
 
-	mArrayGroups.push_back(TableCellArrayGroup{
+	mArrayGroups.push_back(TableArrayGroup{
 		.Row = row,
 		.LeftCell = left,
 		.RightCell = right,
@@ -281,7 +282,7 @@ TableCell* TableTemplate::FindCell(std::string_view name)
 	}
 }
 
-TableCellArrayGroup* TableTemplate::FindArrayGroup(std::string_view name)
+TableArrayGroup* TableTemplate::FindArrayGroup(std::string_view name)
 {
 	auto iter = mName2ArrayGroups.find(name);
 	if (iter != mName2ArrayGroups.end()) {
diff --git a/core/src/Model/Template/TableTemplate.hpp b/core/src/Model/Template/TableTemplate.hpp
index 7f331fa..a9a89d4 100644
--- a/core/src/Model/Template/TableTemplate.hpp
+++ b/core/src/Model/Template/TableTemplate.hpp
@@ -84,7 +84,7 @@ public:
 /// \see TableCell
 /// \see TableInstantiationParameters
 /// \see TableTemplate
-class TableCellArrayGroup
+class TableArrayGroup
 {
 public:
 	/// Parameter name mapped to cell location (index from LeftCell).
@@ -108,7 +108,7 @@ public:
 struct lxw_workbook;
 struct lxw_worksheet;
 
-/// An object containing the necessary information to instanciate a table template.
+/// An object containing the necessary information to instantiate a table template.
 /// \see TableTemplate
 class TableInstantiationParameters
 {
@@ -137,13 +137,16 @@ public:
 /// This current supports exporting to xlsx files.
 class TableTemplate : public Template
 {
+	friend class TableSingleParamsIter;
+	friend class TableArrayGroupsIter;
+
 private:
 	/// Map from parameter name to index of the parameter cell (stored in mCells).
 	tsl::array_map<char, int> mName2Parameters;
 	/// Map from array group name to the index of the array group (stored in mArrayGroups).
 	tsl::array_map<char, int> mName2ArrayGroups;
 	std::vector<TableCell> mCells;
-	std::vector<TableCellArrayGroup> mArrayGroups;
+	std::vector<TableArrayGroup> mArrayGroups;
 	std::vector<int> mRowHeights;
 	std::vector<int> mColumnWidths;
 
@@ -165,10 +168,10 @@ public:
 	void SetCellType(Vec2i pos, TableCell::CellType type);
 
 	int GetArrayGroupCount() const;
-	const TableCellArrayGroup& GetArrayGroup(int id) const;
-	TableCellArrayGroup& GetArrayGroup(int id);
-	TableCellArrayGroup* AddArrayGroup(int row, int left, int right);
-	TableCellArrayGroup* AddArrayGroup(std::string_view name, int row, int left, int right);
+	const TableArrayGroup& GetArrayGroup(int id) const;
+	TableArrayGroup& GetArrayGroup(int id);
+	TableArrayGroup* AddArrayGroup(int row, int left, int right);
+	TableArrayGroup* AddArrayGroup(std::string_view name, int row, int left, int right);
 	bool ExtendArrayGroupLeft(int id, int n);
 	bool ExtendArrayGroupRight(int id, int n);
 
@@ -176,7 +179,7 @@ public:
 	TableCell* FindCell(std::string_view name);
 
 	/// Find an array group by its name.
-	TableCellArrayGroup* FindArrayGroup(std::string_view name);
+	TableArrayGroup* FindArrayGroup(std::string_view name);
 
 	enum MergeCellsResult
 	{
diff --git a/core/src/Model/Template/TableTemplateIterator.cpp b/core/src/Model/Template/TableTemplateIterator.cpp
new file mode 100644
index 0000000..19e30b9
--- /dev/null
+++ b/core/src/Model/Template/TableTemplateIterator.cpp
@@ -0,0 +1,52 @@
+#include "TableTemplateIterator.hpp"
+
+TableSingleParamsIter::TableSingleParamsIter(TableTemplate& tmpl)
+	: mTemplate{ &tmpl }
+	, mIter{ tmpl.mName2Parameters.begin() }
+{
+}
+
+bool TableSingleParamsIter::HasNext() const
+{
+	return mIter != mTemplate->mName2Parameters.end();
+}
+
+TableCell& TableSingleParamsIter::Next()
+{
+	int id = mIter.value();
+	++mIter;
+
+	return mTemplate->mCells[id];
+}
+
+TableArrayGroupsIter::TableArrayGroupsIter(TableTemplate& tmpl)
+	: mTemplate{ &tmpl }
+	, mIter{ tmpl.mName2ArrayGroups.begin() }
+{
+}
+
+bool TableArrayGroupsIter::HasNext() const
+{
+	return mIter != mTemplate->mName2ArrayGroups.end();
+}
+
+TableArrayGroup& TableArrayGroupsIter::Peek() const
+{
+	int id = mIter.value();
+	return mTemplate->mArrayGroups[id];
+}
+
+std::string_view TableArrayGroupsIter::PeekName() const
+{
+	return mIter.key_sv();
+}
+
+const char* TableArrayGroupsIter::PeekNameCStr() const
+{
+	return mIter.key();
+}
+
+void TableArrayGroupsIter::Next()
+{
+	++mIter;
+}
diff --git a/core/src/Model/Template/TableTemplateIterator.hpp b/core/src/Model/Template/TableTemplateIterator.hpp
new file mode 100644
index 0000000..bf7f517
--- /dev/null
+++ b/core/src/Model/Template/TableTemplateIterator.hpp
@@ -0,0 +1,35 @@
+#pragma once
+
+#include "Model/Template/TableTemplate.hpp"
+#include "Model/Template/Template.hpp"
+
+#include <string_view>
+
+class TableSingleParamsIter
+{
+private:
+	TableTemplate* mTemplate;
+	tsl::array_map<char, int>::iterator mIter;
+
+public:
+	TableSingleParamsIter(TableTemplate& tmpl);
+
+	bool HasNext() const;
+	TableCell& Next();
+};
+
+class TableArrayGroupsIter
+{
+private:
+	TableTemplate* mTemplate;
+	tsl::array_map<char, int>::iterator mIter;
+
+public:
+	TableArrayGroupsIter(TableTemplate& tmpl);
+
+	bool HasNext() const;
+	TableArrayGroup& Peek() const;
+	std::string_view PeekName() const;
+	const char* PeekNameCStr() const;
+	void Next();
+};
diff --git a/core/src/Model/Template/fwd.hpp b/core/src/Model/Template/fwd.hpp
index b918755..8378871 100644
--- a/core/src/Model/Template/fwd.hpp
+++ b/core/src/Model/Template/fwd.hpp
@@ -2,7 +2,7 @@
 
 // TableTemplate.hpp
 class TableCell;
-class TableCellArrayGroup;
+class TableArrayGroup;
 class TableInstantiationParameters;
 class TableTemplate;