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var tooltip = {
target: false,
div: document.getElementById("tooltip"),
}
tooltip.show = (target, text, vertical_positioned) => {
if (target == tooltip.target) {
return;
}
tooltip.target = target;
let div = tooltip.div;
let padding = parseFloat(
getComputedStyle(div).getPropertyValue("padding")
);
let tooltip_padding = padding / 1.2;
let get_positions = () => {
div.innerHTML = text;
let div_rect = div.getBoundingClientRect();
let target_rect = target.getBoundingClientRect();
let x_pos = 0;
let y_pos = 0;
if (vertical_positioned) {
x_pos = target_rect.x + (target_rect.width / 2);
x_pos = x_pos - (div_rect.width / 2);
if (x_pos < padding) {
x_pos = padding;
} else if (x_pos + div_rect.width > window.innerWidth - padding) {
x_pos = window.innerWidth - div_rect.width - padding;
}
y_pos = target_rect.y + target_rect.height + tooltip_padding;
if (y_pos + div_rect.height > window.innerHeight) {
y_pos = target_rect.y - div_rect.height - tooltip_padding;
}
} else {
x_pos = target_rect.x - div_rect.width - tooltip_padding;
if (x_pos < 0) {
x_pos = target_rect.x + target_rect.width + tooltip_padding;
}
if (x_pos > window.innerWidth - padding) {
x_pos = window.innerWidth - div_rect.width - padding;
}
y_pos = target_rect.y + (target_rect.height / 2);
y_pos = y_pos - (div_rect.height / 2);
}
return {x: x_pos, y: y_pos}
}
let transition_duration = parseFloat(
getComputedStyle(div).getPropertyValue("transition-duration")
) * 1000;
if (div.classList.contains("visible")) {
div.classList.remove("visible");
}
return new Promise((resolve) => {
setTimeout(() => {
if (tooltip.target != target) {
return resolve();
}
let pos = get_positions();
div.style.top = pos.y + "px";
div.style.left = pos.x + "px";
}, transition_duration)
setTimeout(() => {
if (tooltip.target != target) {
return resolve();
}
div.classList.add("visible");
resolve();
}, transition_duration * 2)
})
}
let mouse_y = 0;
let mouse_x = 0;
let tooltip_event = (event) => {
if (event && event.x && event.y) {
mouse_y = event.y;
mouse_x = event.x;
} else {
event = {
x: mouse_x,
y: mouse_y
}
}
let at_mouse = document.elementFromPoint(event.x, event.y);
if (! at_mouse) {return}
let tooltip_text = at_mouse.getAttribute("tooltip");
if (! tooltip_text) {
tooltip.target = false;
tooltip.div.classList.remove("visible");
return;
}
let position = at_mouse.getAttribute("tooltip-position") || "vertical";
tooltip.show(at_mouse, tooltip_text, (position == "vertical"));
}
setInterval(tooltip_event, 1000);
document.addEventListener("click", tooltip_event);
document.addEventListener("mouseup", tooltip_event);
document.addEventListener("mousedown", tooltip_event);
document.addEventListener("mousemove", tooltip_event);
document.addEventListener("mouseenter", tooltip_event);
document.addEventListener("mouseleave", tooltip_event);
module.exports = tooltip;
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