Using Observable for software engineering, programming language and user interface research.
Public
Edited
Dec 25, 2022
{
const Items = component(({ children }) => H.ul(children));
const Item = component(({ name, value }) =>
H.li(
"ITEMxxx: name:",
name,
" value:",
value,
new DebugEffector(
value,
() => console.log("PRE"),
() => console.log("POST")
)
)
);
const List = component(({ items }) =>
H.div(
"List",
Items(
$(items).map(({ name, value, items }) =>
H.li(
"ListItem:",
debug(
$(items).map(({ name, value }) =>
H.div("EXX", Item({ name, value }))
),
"items.map"
)
)
)
)
)
);
const items = [{ name: "AName", value: "BValue" }];
return render(List, {
items: [
{ name: "A", items },
{ name: "B", items }
]
});
}
component(({ name, value }) =>
H.li(
"ITEM: name:",
name,
" value:",
value,
new DebugEffector(
value,
() => console.log("PRE"),
() => console.log("POST")
)
)
).effector.mapping
{
return null;
const GraphNode = component(({ x, y, dx, dy, width, height, dragging }) => {
// TODO: We should have a cell for the current components (which we can send signals)
// TODO: Lifecycle events, ie. mount, unmount, etc
return H.g(
H.foreignObject(
{
x,
/*: $([x, dx], ([x, dx]) => {
console.log("XXX", (x || 0) + (dx || 0));
return (x || 0) + (dx || 0);
})*/ y,
width,
height,
onMouseDown:
(event, path) =>
({ dragging, x, y }, update) => {
console.log("ORIGINAL", { x, y, path });
//off(window.document.body, dragging?.handlers);
const context = {
xo: event.pageX,
yo: event.pageY
};
const handlers = {
mousemove: (event) => {
const dx = event.pageX - context.xo;
const dy = event.pageY - context.yo;
//console.log("UPDATE", { dx, dy, update });
return update({ dx, dy });
},
mouseup: (event) => {
const dx = event.pageX - context.xo;
const dy = event.pageY - context.yo;
off(window.document.body, handlers);
}
};
//on(window.document.body, handlers);
return { x: 40, y: 40, dragging: { context, handlers } };
}
},
H.div(
{
xmlns: "http://www.w3.org/1999/xhtml",
class: "handler",
style: {
cursor: "move",
border: "1px solid red",
background: "#FF0000A0"
}
},
H.p("Lorem ipsum"),
H.button("Hello")
)
)
);
});
const GraphCanvas = component(({ children, xpos, width, dragging }) => {
return H.svg(
{ width: "100%", height: "400px" },
H.rect({ fill: "#F0F0F0", width: "100%", height: "100%" }),
// Some props are unmapped
// TODO: I don't quite understand what happens with {x:100,y:100}, these should
// be part fo the state
GraphNode({ x: xpos, y: 40, width: 110, height: 150 })
/* NodeHandler({
x: $([x, width], ([x, width]) => (x || 0) + (width || 0)),
y: y
})*/
);
});
// We render the TodoList component with a default state.
return render(GraphCanvas, { xpos: 100 });
}
({ listItemBg:"#FFFFFF",
listItemHoverBg:"#EFF7FB",
listItemTxt:"#080F19",
listItemDisabledTxt: "#959BAB",
listItemSelectedBg:"#0A7CC3",
listItemSelectedTxt:"#FFFFFF",
listItemSelectedHoverBg:"#0A7CC3",
listItemSelectedHoverTxt:"#FFFFFF",
listItemLeftClickableSelected:"#0A7CC3",})
({
// These are the default "states" for things
normal:{bg:"#FFFFFF",txt:"#080F19"},
selected:{bg:"#0A7CC3",txt:"#FFFFFF"},
disabled:{txt:"#959BAB"},
list: {
item: {
// These are the overrides
normal:{bg:"#FFFFFF",txt:"#080F19"},
selected:{bg:"#0A7CC3",txt:"#FFFFFF"},
disabled:{txt:"#959BAB"},
}
}
})
// So that
// ListItem.selected would look for {selected} {ListeItem} and merge both
debug = (value, message) =>
new DebugEffector(
value,
(_) => console.log("PRE", message, _),
(_) => console.log("POST", message, _)
)
import { on, off } from "@sebastien/interaction"
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