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ddafaca850
* Issue #376 fix - RemoveColumn * Removing of columns is forbidden when there are formula arrays in the area of removing, except 1-column wide arrays * Modifying named ranges, column ranges when deleting a column * Updating formulas when deleting a column * UpdateAction
67 lines
2.0 KiB
Go
67 lines
2.0 KiB
Go
// Copyright 2017 FoxyUtils ehf. All rights reserved.
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//
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// Use of this source code is governed by the terms of the Affero GNU General
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// Public License version 3.0 as published by the Free Software Foundation and
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// appearing in the file LICENSE included in the packaging of this file. A
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// commercial license can be purchased on https://unidoc.io.
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package formula
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import (
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"github.com/unidoc/unioffice/spreadsheet/reference"
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"github.com/unidoc/unioffice/spreadsheet/update"
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)
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// CellRef is a reference to a single cell
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type CellRef struct {
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s string
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}
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// NewCellRef constructs a new cell reference.
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func NewCellRef(v string) Expression {
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return CellRef{v}
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}
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// Eval evaluates and returns the result of the cell reference.
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func (c CellRef) Eval(ctx Context, ev Evaluator) Result {
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return ctx.Cell(c.s, ev)
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}
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// Reference returns a string reference value to a cell.
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func (c CellRef) Reference(ctx Context, ev Evaluator) Reference {
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return Reference{Type: ReferenceTypeCell, Value: c.s}
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}
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// String returns a string representation of CellRef.
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func (c CellRef) String() string {
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return c.s
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}
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// Update makes a reference to point to one of the neighboring cells after removing a row/column with respect to the update type.
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func (c CellRef) Update(q *update.UpdateQuery) Expression {
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if q.UpdateCurrentSheet {
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c.s = updateRefStr(c.s, q)
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}
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return c
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}
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// updateRefStr gets reference string representation like C1, parses it and makes a string representation of a new reference with respect to the update type (e.g. B1 if a column to the left of this reference was removed).
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func updateRefStr(refStr string, q *update.UpdateQuery) string {
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ref, err := reference.ParseCellReference(refStr)
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if err != nil {
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return "#REF!"
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}
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if q.UpdateType == update.UpdateActionRemoveColumn {
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columnIdxToRemove := q.ColumnIdx
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columnIdx := ref.ColumnIdx
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if columnIdx < columnIdxToRemove {
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return refStr
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} else if columnIdx == columnIdxToRemove {
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return "#REF!"
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} else {
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return ref.Update(update.UpdateActionRemoveColumn).String()
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}
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}
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return refStr
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}
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