More work on workflows

- WorkflowStep -> WorkflowNode
- Added initial kinds of WorkflowNode's

1 files changed, 101 insertions, 0 deletions

diff --git a/core/src/Model/WorkflowNodes.hpp b/core/src/Model/WorkflowNodes.hpp
new file mode 100644
index 0000000..e7d4bfc
--- /dev/null
+++ b/core/src/Model/WorkflowNodes.hpp
@@ -0,0 +1,101 @@
+#pragma once
+
+#include "Model/Workflow.hpp"
+
+#include <cstddef>
+#include <memory>
+#include <variant>
+#include <vector>
+
+class NumericOperationNode : public WorkflowNode {
+public:
+	enum OperationType {
+		Addition,
+		Subtraction,
+		Multiplication,
+		Division,
+
+		InvalidType,
+		TypeCount = InvalidType,
+	};
+
+private:
+	OperationType mType;
+
+public:
+	static Kind OperationTypeToNodeKind(OperationType type);
+	static OperationType NodeKindToOperationType(Kind kind);
+	static bool IsInstance(const WorkflowNode* node);
+	NumericOperationNode(OperationType type);
+
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+};
+
+class NumericExpressionNode : public WorkflowNode {
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	NumericExpressionNode();
+
+	// TODO
+};
+
+class FormatTextNode : public WorkflowNode {
+public:
+	enum ArgumentType {
+		NumericArgument,
+		TextArgument,
+		DateTimeArgument,
+	};
+
+private:
+	struct Argument;
+	using Element = std::variant<std::string, Argument>;
+
+	std::vector<Element> mElements;
+	int mMinOutputChars;
+
+public:
+	static BaseValue::Kind ArgumentTypeToValueKind(ArgumentType arg);
+	static bool IsInstance(const WorkflowNode* node);
+	FormatTextNode();
+
+	int GetElementCount() const;
+	const Element& GetElement(int idx) const;
+
+	void SetElement(int idx, std::string text);
+	void SetElement(int idx, ArgumentType argument);
+	void InsertElement(int idx, std::string text);
+	void InsertElement(int idx, ArgumentType argument);
+	void AppendElement(std::string text);
+	void AppendElement(ArgumentType argument);
+	void RemoveElement(int idx);
+
+	virtual void Evaluate(WorkflowEvaluationContext& ctx) override;
+
+private:
+	void PreRemoveElement(int idx);
+};
+
+class DocumentTemplateExpansionNode : public WorkflowNode {
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	DocumentTemplateExpansionNode();
+
+	// TODO
+};
+
+class FormInputNode : public WorkflowNode {
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	FormInputNode();
+
+	// TODO
+};
+
+class DatabaseRowsInputNode : public WorkflowNode {
+public:
+	static bool IsInstance(const WorkflowNode* node);
+	DatabaseRowsInputNode();
+
+	// TODO
+};