ABAP_to_the_Future

11
ABAP2XLSX
Advanced
A more advanced example of conditional formatting is to take advantage of the
full range of formulas available in Excel to test if a value is bigger or smaller than
a certain value. For instance, Listing 11.16 causes a cell to become red if it starts
with a 1.
lo_style_conditional = lo_worksheet->add_new_conditional_style( ).
lo_style_conditional->rule = zcl_excel_style_conditional=>c_operator_
beginswith.
ls_cellis-formula = '1'.
ls_cellis-operator = zcl_excel_style_conditional=>c_operator_beginswith.
ls_cellis-cell_style = ld_red_guid.
Listing 11.16 Conditional Formatting: Testing the Start of a String
Testing for cells that begin with something is not standard in ABAP2XLSX, but it
can be done. First, manually create a sp readsheet and set up the conditional formatting
the way you want it—in this example, with colors changing based on a
cell starting with a 1. Then save the sp readsheet in the way described in Section
11.1.1 so that you can see the structure of the resulting XML file. You’ll notice
that in the sheet1 section of the XML file, the XML code shown in Listing 11.17
had been generated.
-<conditionalFormatting sqref="G6:G12">-
<cfRule operator="beginsWith" priority="4" dxfId="4"
type="beginsWith" text="1">
<formula>LEFT(G6,LEN("1"))="1"</formula>
</cfRule>
</conditionalFormatting>
Listing 11.17 Generated XML Code
If you want this same functionality in ABAP2XLSX, you have to find a way to
manually generate this XML code based onthe attributes of the worksheet object.
It turns out the XML for conditional formatting is generated inside the ZCL_
EXCEL_WRITER_2007 class in the CREATE_XL_SHEET method. Inside that method,
there is a CASE statement on LO_STYLE_CONDITION->RULE, which is a value that was
set in Listing 11.16. Listing 11.18 adds a new branch to the case statement and
calls various methods to build up the XML structure.
The top node is set outside of the CASE statement by the standard ABAP2XLSX
class; this is represented by an object called LO_ELEMENT, which contains the node
that starts and ends with <conditional formatting>.
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