// Copyright 2016 - 2023 The excelize Authors. All rights reserved. Use of
// this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
//
// Package excelize providing a set of functions that allow you to write to and
// read from XLAM / XLSM / XLSX / XLTM / XLTX files. Supports reading and
// writing spreadsheet documents generated by Microsoft Excel™ 2007 and later.
// Supports complex components by high compatibility, and provided streaming
// API for generating or reading data from a worksheet with huge amounts of
// data. This library needs Go version 1.16 or later.

package excelize

import "encoding/xml"

// xlsxCalcChain directly maps the calcChain element. This element represents
// the root of the calculation chain.
type xlsxCalcChain struct {
	XMLName xml.Name         `xml:"http://schemas.openxmlformats.org/spreadsheetml/2006/main calcChain"`
	C       []xlsxCalcChainC `xml:"c"`
}

// xlsxCalcChainC directly maps the c element.
//
//	 Attributes               | Attributes
//	--------------------------+----------------------------------------------------------
//	 a (Array)                | A Boolean flag indicating whether the cell's formula
//	                          | is an array formula. True if this cell's formula is
//	                          | an array formula, false otherwise. If there is a
//	                          | conflict between this attribute and the t attribute
//	                          | of the f element (§18.3.1.40), the t attribute takes
//	                          | precedence. The possible values for this attribute
//	                          | are defined by the W3C XML Schema boolean datatype.
//	                          |
//	 i (Sheet Id)             | A sheet Id of a sheet the cell belongs to. If this is
//	                          | omitted, it is assumed to be the same as the i value
//	                          | of the previous cell.The possible values for this
//	                          | attribute are defined by the W3C XML Schema int datatype.
//	                          |
//	 l (New Dependency Level) | A Boolean flag indicating that the cell's formula
//	                          | starts a new dependency level. True if the formula
//	                          | starts a new dependency level, false otherwise.
//	                          | Starting a new dependency level means that all
//	                          | concurrent calculations, and child calculations, shall
//	                          | be completed - and the cells have new values - before
//	                          | the calc chain can continue. In other words, this
//	                          | dependency level might depend on levels that came before
//	                          | it, and any later dependency levels might depend on
//	                          | this level; but not later dependency levels can have
//	                          | any calculations started until this dependency level
//	                          | completes.The possible values for this attribute are
//	                          | defined by the W3C XML Schema boolean datatype.
//	                          |
//	 r (Cell Reference)       | An A-1 style reference to a cell.The possible values
//	                          | for this attribute are defined by the ST_CellRef
//	                          | simple type (§18.18.7).
//	                          |
//	 s (Child Chain)          | A Boolean flag indicating whether the cell's formula
//	                          | is on a child chain. True if this cell is part of a
//	                          | child chain, false otherwise. If this is omitted, it
//	                          | is assumed to be the same as the s value of the
//	                          | previous cell .A child chain is a list of calculations
//	                          | that occur which depend on the parent to the chain.
//	                          | There shall not be cross dependencies between child
//	                          | chains. Child chains are not the same as dependency
//	                          | levels - a child chain and its parent are all on the
//	                          | same dependency level. Child chains are series of
//	                          | calculations that can be independently farmed out to
//	                          | other threads or processors.The possible values for
//	                          | this attribute is defined by the W3C XML Schema
//	                          | boolean datatype.
//	                          |
//	 t (New Thread)           | A Boolean flag indicating whether the cell's formula
//	                          | starts a new thread. True if the cell's formula starts
//	                          | a new thread, false otherwise.The possible values for
//	                          | this attribute is defined by the W3C XML Schema
//	                          | boolean datatype.
type xlsxCalcChainC struct {
	R string `xml:"r,attr"`
	I int    `xml:"i,attr,omitempty"`
	L bool   `xml:"l,attr,omitempty"`
	S bool   `xml:"s,attr,omitempty"`
	T bool   `xml:"t,attr,omitempty"`
	A bool   `xml:"a,attr,omitempty"`
}

// xlsxVolTypes maps the volatileDependencies part provides a cache of data that
// supports Real Time Data (RTD) and CUBE functions in the workbook.
type xlsxVolTypes struct {
	XMLName xml.Name      `xml:"http://schemas.openxmlformats.org/spreadsheetml/2006/main volTypes"`
	VolType []xlsxVolType `xml:"volType"`
	ExtLst  *xlsxExtLst   `xml:"extLst"`
}

// xlsxVolType represents dependency information for a specific type of external
// data server.
type xlsxVolType struct {
	Type string        `xml:"type,attr"`
	Main []xlsxVolMain `xml:"main"`
}

// xlsxVolMain represents dependency information for all topics within a
// volatile dependency type that share the same first string or function
// argument.
type xlsxVolMain struct {
	First string         `xml:"first,attr"`
	Tp    []xlsxVolTopic `xml:"tp"`
}

// xlsxVolTopic represents dependency information for all topics within a
// volatile dependency type that share the same first string or argument.
type xlsxVolTopic struct {
	T   string            `xml:"t,attr,omitempty"`
	V   string            `xml:"v"`
	Stp []string          `xml:"stp"`
	Tr  []xlsxVolTopicRef `xml:"tr"`
}

// xlsxVolTopicRef represents the reference to a cell that depends on this
// topic. Each topic can have one or more cells dependencies.
type xlsxVolTopicRef struct {
	R string `xml:"r,attr"`
	S int    `xml:"s,attr"`
}