svghmi/lists.ysl2
author Edouard Tisserant <edouard.tisserant@gmail.com>
Wed, 05 Oct 2022 16:10:17 +0200
branchwxPython4
changeset 3617 c3aae4c95bc1
parent 3322 67069f4634b7
permissions -rw-r--r--
Runtime: work around 1s delay added when using twisted reactor's callLater.

Since wxPython4, using wxReactor from non-main thread was producing
exceptions in wxWidget's C++ code. Then reactor.run() was called from
main thread, and runtime's worker was delegating calls to reactor
with callLater(0, callable).

While this worked perfectly with wxReactor, it did introduce an unexplained
1 second delay to each worker call when using nomal linux reactors
(i.e. without wxPython). As a workaround reactor runs in a thread when using
twisted without wxPython
// lists.ysl2
//
// compute list widget related constants
// for details, refer to :
//    widget_list.ysl2
//    widget_textlist.ysl2
//    widget_textstulelist.ysl2


// List widgets

const "hmi_lists_descs", "$parsed_widgets/widget[@type = 'List']";
const "hmi_lists", "$hmi_elements[@id = $hmi_lists_descs/@id]";


// TextList widget

const "hmi_textlists_descs", "$parsed_widgets/widget[@type = 'TextList']";
const "hmi_textlists", "$hmi_elements[@id = $hmi_textlists_descs/@id]";

// TextStyleList widgets

const "hmi_textstylelists_descs", "$parsed_widgets/widget[@type = 'TextStyleList']";
const "hmi_textstylelists", "$hmi_elements[@id = $hmi_textstylelists_descs/@id]";

const "textstylelist_related" foreach "$hmi_textstylelists" list {
    attrib "listid" value "@id";
    foreach "func:refered_elements(.)" elt {
        attrib "eltid" value "@id";
    }
}
const "textstylelist_related_ns", "exsl:node-set($textstylelist_related)";