Add spinner.js, synced with Etiquette.
This commit is contained in:
parent
dd59fd2c36
commit
235bc2501d
1 changed files with 174 additions and 0 deletions
174
frontends/ycdl_flask/static/js/spinner.js
Normal file
174
frontends/ycdl_flask/static/js/spinner.js
Normal file
|
|
@ -0,0 +1,174 @@
|
||||||
|
var spinner = {};
|
||||||
|
|
||||||
|
spinner.Spinner =
|
||||||
|
function Spinner(element)
|
||||||
|
{
|
||||||
|
this.show = function(delay)
|
||||||
|
{
|
||||||
|
clearTimeout(this.delayed_showing_timeout);
|
||||||
|
this.delayed_showing_timeout = null;
|
||||||
|
|
||||||
|
if (delay)
|
||||||
|
{
|
||||||
|
this.delayed_showing_timeout = setTimeout(function(thisthis){thisthis.show()}, delay, this);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
this.element.classList.remove("hidden");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
this.hide = function()
|
||||||
|
{
|
||||||
|
clearTimeout(this.delayed_showing_timeout);
|
||||||
|
this.delayed_showing_timeout = null;
|
||||||
|
|
||||||
|
this.element.classList.add("hidden");
|
||||||
|
}
|
||||||
|
|
||||||
|
this.delayed_showing_timeout = null;
|
||||||
|
this.element = element;
|
||||||
|
}
|
||||||
|
|
||||||
|
spinner.spinner_button_index = 0;
|
||||||
|
spinner.button_spinner_groups = {};
|
||||||
|
// When a group member is closing, it will call the closer on all other members
|
||||||
|
// in the group. Of course, this would recurse forever without some kind of
|
||||||
|
// flagging, so this dict will hold group_id:true if a close is in progress,
|
||||||
|
// and be empty otherwise.
|
||||||
|
spinner.spinner_group_closing = {};
|
||||||
|
|
||||||
|
spinner.add_to_spinner_group =
|
||||||
|
function add_to_spinner_group(group_id, button)
|
||||||
|
{
|
||||||
|
if (!(group_id in spinner.button_spinner_groups))
|
||||||
|
{
|
||||||
|
spinner.button_spinner_groups[group_id] = [];
|
||||||
|
}
|
||||||
|
spinner.button_spinner_groups[group_id].push(button);
|
||||||
|
}
|
||||||
|
|
||||||
|
spinner.close_grouped_spinners =
|
||||||
|
function close_grouped_spinners(group_id)
|
||||||
|
{
|
||||||
|
if (group_id && !(spinner.spinner_group_closing[group_id]))
|
||||||
|
{
|
||||||
|
spinner.spinner_group_closing[group_id] = true;
|
||||||
|
spinner.button_spinner_groups[group_id].forEach(function(button)
|
||||||
|
{
|
||||||
|
window[button.dataset.spinnerCloser]();
|
||||||
|
});
|
||||||
|
delete spinner.spinner_group_closing[group_id];
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
spinner.open_grouped_spinners =
|
||||||
|
function open_grouped_spinners(group_id)
|
||||||
|
{
|
||||||
|
spinner.button_spinner_groups[group_id].forEach(function(button)
|
||||||
|
{
|
||||||
|
window[button.dataset.spinnerOpener]();
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
spinner.init_button_with_spinner =
|
||||||
|
function init_button_with_spinner()
|
||||||
|
{
|
||||||
|
/*
|
||||||
|
To create a button that has a spinner, and cannot be clicked again while
|
||||||
|
the action is running, assign it the class "button_with_spinner".
|
||||||
|
When you're ready for the spinner to disappear, call
|
||||||
|
window[button.dataset.spinnerCloser]().
|
||||||
|
|
||||||
|
Optional:
|
||||||
|
data-spinner-id: If you want to use your own element as the spinner,
|
||||||
|
give its ID here. Otherwise a new one will be created.
|
||||||
|
|
||||||
|
data-spinner-delay: The number of milliseconds to wait before the
|
||||||
|
spinner appears. For tasks that you expect to run very quickly,
|
||||||
|
this helps prevent a pointlessly short spinner.
|
||||||
|
|
||||||
|
data-holder-class: CSS class for the new span that holds the menu.
|
||||||
|
|
||||||
|
data-spinner-group: An opaque string. All button_with_spinner that have
|
||||||
|
the same group will go into spinner mode when any of them is
|
||||||
|
clicked. Useful if you want to have two copies of a button on the
|
||||||
|
page, or two buttons which do opposite things and you only want one
|
||||||
|
to run at a time.
|
||||||
|
*/
|
||||||
|
var buttons = Array.from(document.getElementsByClassName("button_with_spinner"));
|
||||||
|
buttons.forEach(function(button)
|
||||||
|
{
|
||||||
|
button.classList.remove("button_with_spinner");
|
||||||
|
button.innerHTML = button.innerHTML.trim();
|
||||||
|
|
||||||
|
var holder = document.createElement("span");
|
||||||
|
holder.classList.add("spinner_holder");
|
||||||
|
holder.classList.add(button.dataset.holderClass || "spinner_holder");
|
||||||
|
button.parentElement.insertBefore(holder, button);
|
||||||
|
button.parentElement.removeChild(button);
|
||||||
|
holder.appendChild(button);
|
||||||
|
|
||||||
|
var spinner_element;
|
||||||
|
if (button.dataset.spinnerId)
|
||||||
|
{
|
||||||
|
spinner_element = document.getElementById(button.dataset.spinnerId);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
spinner_element = document.createElement("span");
|
||||||
|
spinner_element.innerText = "Working...";
|
||||||
|
spinner_element.classList.add("hidden");
|
||||||
|
holder.appendChild(spinner_element);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (button.dataset.spinnerGroup)
|
||||||
|
{
|
||||||
|
spinner.add_to_spinner_group(button.dataset.spinnerGroup, button);
|
||||||
|
}
|
||||||
|
|
||||||
|
var spin = new spinner.Spinner(spinner_element);
|
||||||
|
var spin_delay = parseFloat(button.dataset.spinnerDelay) || 0;
|
||||||
|
|
||||||
|
button.dataset.spinnerOpener = "spinner_opener_" + spinner.spinner_button_index;
|
||||||
|
window[button.dataset.spinnerOpener] = function spinner_opener()
|
||||||
|
{
|
||||||
|
spin.show(spin_delay);
|
||||||
|
button.disabled = true;
|
||||||
|
}
|
||||||
|
// It is expected that the function referenced by onclick will call
|
||||||
|
// window[button.dataset.spinnerCloser]() when appropriate, since from
|
||||||
|
// our perspective we cannot be sure when to close the spinner.
|
||||||
|
button.dataset.spinnerCloser = "spinner_closer_" + spinner.spinner_button_index;
|
||||||
|
window[button.dataset.spinnerCloser] = function spinner_closer()
|
||||||
|
{
|
||||||
|
spinner.close_grouped_spinners(button.dataset.spinnerGroup);
|
||||||
|
spin.hide();
|
||||||
|
button.disabled = false;
|
||||||
|
}
|
||||||
|
|
||||||
|
var wrapped_onclick = button.onclick;
|
||||||
|
button.removeAttribute('onclick');
|
||||||
|
button.onclick = function()
|
||||||
|
{
|
||||||
|
if (button.dataset.spinnerGroup)
|
||||||
|
{
|
||||||
|
spinner.open_grouped_spinners(button.dataset.spinnerGroup);
|
||||||
|
}
|
||||||
|
else
|
||||||
|
{
|
||||||
|
window[button.dataset.spinnerOpener]();
|
||||||
|
}
|
||||||
|
return wrapped_onclick();
|
||||||
|
}
|
||||||
|
|
||||||
|
spinner.spinner_button_index += 1;
|
||||||
|
});
|
||||||
|
}
|
||||||
|
|
||||||
|
spinner.on_pageload =
|
||||||
|
function on_pageload()
|
||||||
|
{
|
||||||
|
spinner.init_button_with_spinner();
|
||||||
|
}
|
||||||
|
document.addEventListener("DOMContentLoaded", spinner.on_pageload);
|
||||||
Loading…
Reference in a new issue