IDE: Make ST code generation more verbose, since it can be really long in case of big programs, and it is better to let the user know build is still in progress.
// widget_button.ysl2
// Finite state machine
decl fsm(name);
decl state(name);
decl on_mouse(position);
decl on_dispatch(value);
decl jump(state);
decl show(eltname);
decl hmi_value(value);
// State machine to drive HMI_BOOL on a potentially laggy connection
const "_button_fsm" fsm {
state "init" {
on_dispatch "false" jump "released";
on_dispatch "true" jump "pressed";
}
state "pressing" {
// show "waitactive";
hmi_value "true";
on_dispatch "true" jump "pressed";
on_mouse "up" jump "shortpress";
}
state "pressed" {
show "active";
on_mouse "up" jump "releasing";
on_dispatch "false" jump "released";
}
state "shortpress" {
on_dispatch "true" jump "releasing";
on_mouse "down" jump "pressing";
}
state "releasing" {
// show "waitinactive";
hmi_value "false";
on_dispatch "false" jump "released";
on_mouse "down" jump "shortrelease";
}
state "released" {
show "inactive";
on_mouse "down" jump "pressing";
on_dispatch "true" jump "pressed";
}
state "shortrelease" {
on_dispatch "false" jump "pressing";
on_mouse "up" jump "releasing";
}
}
template "fsm", mode="dispatch_transition" {
| switch (this.state) {
apply "state", mode="dispatch_transition";
| }
}
template "state", mode="dispatch_transition" {
| case "«@name»":
apply "on-dispatch";
| break;
}
template "on-dispatch" {
| if(value == «@value») {
apply "jump", mode="transition";
| }
}
template "fsm", mode="mouse_transition" {
param "position";
| switch (this.state) {
apply "state", mode="mouse_transition" with "position", "$position";
| }
}
template "state", mode="mouse_transition" {
param "position";
| case "«@name»":
apply "on-mouse[@position = $position]";
| break;
}
template "on-mouse" {
// up or down state is already assumed because apply statement filters it
apply "jump", mode="transition";
}
template "jump", mode="transition" {
| this.state = "«@state»";
| this.«@state»_action();
}
template "fsm", mode="actions" {
apply "state", mode="actions";
}
template "state", mode="actions" {
| «@name»_action(){
//| console.log("Entering state «@name»");
apply "*", mode="actions";
| }
}
template "show", mode="actions" {
| this.display = "«@eltname»";
| this.request_animate();
}
template "hmi-value", mode="actions" {
| this.apply_hmi_value(0, «@value»);
}
template "widget[@type='Button']", mode="widget_class"{
const "fsm","exsl:node-set($_button_fsm)";
| class ButtonWidget extends Widget{
| frequency = 5;
| display = "inactive";
| state = "init";
| dispatch(value) {
// | console.log("dispatch"+value);
apply "$fsm", mode="dispatch_transition";
| }
| onmouseup(evt) {
| svg_root.removeEventListener("pointerup", this.bound_onmouseup, true);
// | console.log("onmouseup");
apply "$fsm", mode="mouse_transition" with "position", "'up'";
| }
| onmousedown(evt) {
| svg_root.addEventListener("pointerup", this.bound_onmouseup, true);
// | console.log("onmousedown");
apply "$fsm", mode="mouse_transition" with "position", "'down'";
| }
apply "$fsm", mode="actions";
| animate(){
| if (this.active_elt && this.inactive_elt) {
foreach "str:split('active inactive')" {
| if(this.display == "«.»")
| this.«.»_elt.style.display = "";
| else
| this.«.»_elt.style.display = "none";
}
| }
| }
| init() {
| this.bound_onmouseup = this.onmouseup.bind(this);
| this.element.addEventListener("pointerdown", this.onmousedown.bind(this));
| }
| }
}
template "widget[@type='Button']", mode="widget_defs" {
param "hmi_element";
optional_labels("active inactive");
}