add wb_remove_conditional_formatting(). part of #1010

.lintr

@@ -3,6 +3,7 @@ linters: linters_with_defaults(
   cyclocomp_linter = NULL,                 #
   commented_code_linter = NULL,            #
   object_name_linter = NULL,               # more camel case
+  object_length_linter = NULL,
   indentation_linter = NULL,               # many
   quotes_linter = NULL
   )

DESCRIPTION

@@ -1,7 +1,7 @@
 Type: Package
 Package: openxlsx2
 Title: Read, Write and Edit 'xlsx' Files
-Version: 1.6
+Version: 1.6.0.9000
 Language: en-US
 Authors@R: c(
   person("Jordan Mark", "Barbone", email = "jmbarbone@gmail.com", role = "aut", comment = c(ORCID = "0000-0001-9788-3628")),

NAMESPACE

@@ -116,6 +116,7 @@ export(wb_protect_worksheet)
 export(wb_read)
 export(wb_remove_col_widths)
 export(wb_remove_comment)
+export(wb_remove_conditional_formatting)
 export(wb_remove_creators)
 export(wb_remove_filter)
 export(wb_remove_named_region)

NEWS.md

@@ -1,3 +1,12 @@
+# openxlsx2 (development version)
+
+## New features
+
+* remove conditional formatting from worksheet
+
+
+***************************************************************************
+
 # openxlsx2 1.6
 
 ## New features

R/class-workbook-wrappers.R

@@ -3707,8 +3707,8 @@ wb_add_form_control <- function(
 #' @param sheet A name or index of a worksheet
 #' @param dims A cell or cell range like "A1" or "A1:B2"
 #' @param rule The condition under which to apply the formatting. See **Examples**.
-#' @param style A style to apply to those cells that satisfy the rule.
-#'   Default is `font_color = "FF9C0006"` and `bg_fill = "FFFFC7CE"`
+#' @param style A name of a style to apply to those cells that satisfy the rule. See [wb_add_dxfs_style()] how to create one.
+#'   The default style has `font_color = "FF9C0006"` and `bg_fill = "FFFFC7CE"`
 #' @param type The type of conditional formatting rule to apply. One of `"expression"`, `"colorScale"` or others mentioned in **Details**.
 #' @param params A list of additional parameters passed.  See **Details** for more.
 #' @param ... additional arguments
@@ -3807,6 +3807,26 @@ wb_add_conditional_formatting <- function(
   )
 }
 
+#' @rdname wb_add_conditional_formatting
+#' @param first remove the first conditional formatting
+#' @param last remove the last conditional formatting
+#' @export
+wb_remove_conditional_formatting <- function(
+    wb,
+    sheet  = current_sheet(),
+    dims   = NULL,
+    first  = FALSE,
+    last   = FALSE
+) {
+  assert_workbook(wb)
+  wb$clone()$remove_conditional_formatting(
+    sheet  = sheet,
+    dims   = dims,
+    first  = first,
+    last   = last
+  )
+}
+
 #' Apply styling from a sheet to another within a workbook
 #'
 #' This function can be used to apply styling from a cell range, and apply it

R/class-workbook.R

@@ -4744,8 +4744,6 @@ wbWorkbook <- R6::R6Class(
 
     ## conditional formatting ----
 
-    # TODO remove_conditional_formatting?
-
     #' @description Add conditional formatting
     #' @param rule rule
     #' @param style style
@@ -5067,6 +5065,41 @@ wbWorkbook <- R6::R6Class(
       invisible(self)
     },
 
+    #' @description Remove conditional formatting
+    #' @param sheet sheet
+    #' @param dims dims
+    #' @param first first
+    #' @param last last
+    #' @return The `wbWorkbook` object
+    remove_conditional_formatting = function(
+        sheet  = current_sheet(),
+        dims   = NULL,
+        first  = FALSE,
+        last   = FALSE
+    ) {
+
+      sheet <- private$get_sheet_index(sheet)
+
+      if (is.null(dims) && isFALSE(first) && isFALSE(last)) {
+        self$worksheets[[sheet]]$conditionalFormatting <- character()
+      } else {
+
+        cf <- self$worksheets[[sheet]]$conditionalFormatting
+
+        if (!is.null(dims)) {
+          if (any(sel <- names(cf) %in% dims)) {
+            self$worksheets[[sheet]]$conditionalFormatting <- cf[!sel]
+          }
+        } else if (first) {
+            self$worksheets[[sheet]]$conditionalFormatting <- cf[-1]
+        } else if (last) {
+            self$worksheets[[sheet]]$conditionalFormatting <- cf[-length(cf)]
+        }
+      }
+
+      invisible(self)
+    },
+
     ## plots and images ----
 
     #' @description

tests/testthat/test-class-workbook-wrappers.R

@@ -542,6 +542,16 @@ test_that("wb_add_conditional_formatting() is a wrapper", {
   )
 })
 
+# wb_remove_conditional_formatting() -----------------------------------------
+
+test_that("wb_remove_conditional_formatting() is a wrapper", {
+  wb <- wb_workbook()$add_worksheet()
+  expect_wrapper(
+    "remove_conditional_formatting",
+    wb = wb
+  )
+})
+
 # wb_set_sheet_names() ----------------------------------------------------
 
 test_that("wb_set_sheet_names() is a wrapper", {

tests/testthat/test-conditional_formatting.R

@@ -868,3 +868,46 @@ test_that("escaping conditional formatting works", {
     )
 
 })
+
+test_that("remove conditional formatting works", {
+  wb <- wb_workbook()$
+    add_worksheet()$
+    add_data(x = 1:4)$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:4), rule = ">2")$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:3), rule = "<2")$
+    add_worksheet()$
+    add_data(x = 1:4)$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:4), rule = ">2")$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:3), rule = "<2")$
+    add_worksheet()$
+    add_data(x = 1:4)$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:4), rule = ">2")$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:3), rule = "<2")$
+    add_worksheet()$
+    add_data(x = 1:4)$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:4), rule = ">2")$
+    add_conditional_formatting(dims = wb_dims(cols = "A", rows = 1:3), rule = "<2")
+
+  wb$remove_conditional_formatting(sheet = 1)
+  wb$remove_conditional_formatting(sheet = 1, first = TRUE)
+  wb$remove_conditional_formatting(sheet = 1, last = TRUE)
+  wb$remove_conditional_formatting(sheet = 2, dims = wb_dims(cols = "A", rows = 1:4))
+  wb$remove_conditional_formatting(sheet = 3, first = TRUE)
+  wb$remove_conditional_formatting(sheet = 4, last = TRUE)
+
+  exp <- character()
+  got <- wb$worksheets[[1]]$conditionalFormatting
+  expect_equal(exp, got)
+
+  exp <- c(`A1:A3` = "<cfRule type=\"expression\" dxfId=\"3\" priority=\"1\"><formula>A1&lt;2</formula></cfRule>")
+  got <- wb$worksheets[[2]]$conditionalFormatting
+  expect_equal(exp, got)
+
+  exp <- c(`A1:A3` = "<cfRule type=\"expression\" dxfId=\"5\" priority=\"1\"><formula>A1&lt;2</formula></cfRule>")
+  got <- wb$worksheets[[3]]$conditionalFormatting
+  expect_equal(exp, got)
+
+  exp <- c(`A1:A4` = "<cfRule type=\"expression\" dxfId=\"6\" priority=\"2\"><formula>A1&gt;2</formula></cfRule>")
+  got <- wb$worksheets[[4]]$conditionalFormatting
+  expect_equal(exp, got)
+})