HGKeeper

SVGHMI: fix JS error loading empty single page

2023-11-24, Edouard Tisserant

ecb947e5bbb4

SVGHMI: fix JS error loading empty single page

svg:svg tag should not be considered as a detachable group,
so filter only svg:g elements

// widget_back.ysl2

widget_desc("Back") {

longdesc

Back widget brings focus back to previous page in history when clicked.

shortdesc > Jump to previous page

}

widget_class("Back")

on_click(evt) {

if(jump_history.length > 1){

let page_name, index;

do {

jump_history.pop(); // forget current page

if(jump_history.length == 0) return;

[page_name, index] = jump_history[jump_history.length-1];

} while(page_name == "ScreenSaver") // never go back to ScreenSaver

switch_page(page_name, index);

}

init() {

this.element.onclick = this.on_click.bind(this);

}