Load file from AS to cl_gui_textedit with line breaks

I want to display a file inside a cl_gui_textedit component with line breaks which causes me problems.

I am using the following code to initialize the component

  DATA: lo_c_errorviewer TYPE REF TO cl_gui_custom_container.

  CREATE OBJECT lo_c_errorviewer
    EXPORTING
        container_name = 'C_ERROR_MSG'.

  CREATE OBJECT go_error_textedit
    EXPORTING parent = lo_c_errorviewer.

  go_error_textedit->set_toolbar_mode( 0 ).
  go_error_textedit->set_statusbar_mode( 0 ).

After some XML processing with the iXML package the binary data of the file is available like this:

types: begin of xml_line,
        data(256) type x,
       end of xml_line.

data:  xml_table type table of xml_line,
       xml_size  type i.

ostream = streamFactory->create_ostream_itable( xml_table ).
document->render( ostream = ostream  recursive = 'X' ).
xml_size = ostream->get_num_written_raw( ).

This should contain line breaks if I am right. The ostream object has "pretty printing" turned on by default.

I searched the reference and the only way to pass the information is via

call method <c_textedit_control> - > set_text_as_stream

which expects a "Standard Table" of characters. How do I convert the data or pass it to the component?

Solution

It's easier if you render your XML document into a STRING straight away, which you can then send to your CL_GUI_TEXTEDIT control:

data xmlstring type string.
data ostream type ref to if_ixml_ostream.
ostream = streamfactory->create_ostream_cstring( xmlstring ).
document->render( ostream = ostream recursive = 'X' ).
...
data textedit type ref to cl_gui_textedit.
create object textedit
  exporting
    parent = container.
textedit->set_textstream( xmlstring ).

If you must render into binary data, then I suggest you use an XSTRING for that:

data xmlxstring type xstring.
data ostream type ref to if_ixml_ostream.
ostream = streamfactory->create_ostream_xstring( xmlxstring ).
document->render( ostream = ostream recursive = 'X' ).

You can then convert the binary data to a string, using the CL_ABAP_CONV_IN_CE class provided by SAP:

data converter type ref to cl_abap_conv_in_ce.
converter = cl_abap_conv_in_ce=>create( input = xmlxstring ).
data xmlstring type string.
converter->read( importing data = xmlstring ).

Which you can send to your CL_GUI_TEXTEDIT control:

data textedit type ref to cl_gui_textedit.
create object textedit
  exporting
    parent = container.
textedit->set_textstream( xmlstring ).

Note that in case you run into encoding issues, you can set the encoding on the ostream object before rendering, and the converter object allows you to specify encoding when you create it.