90 lines
2.4 KiB
JavaScript
90 lines
2.4 KiB
JavaScript
#include watcher.js
|
|
|
|
const MszMessagesActionButton = function(button, stateless) {
|
|
if(!(button instanceof Element))
|
|
throw 'button must be an element';
|
|
|
|
const stateful = !stateless;
|
|
const pub = {};
|
|
|
|
const icon = button.querySelector('.js-messages-button-icon i');
|
|
const label = button.querySelector('.js-messages-button-label');
|
|
|
|
const update = () => {
|
|
if(stateful) {
|
|
icon.className = button.dataset[`${button.dataset.state}Ico`];
|
|
label.textContent = button.dataset[`${button.dataset.state}Str`];
|
|
}
|
|
};
|
|
pub.update = update;
|
|
|
|
const stateWatcher = new MszWatcher;
|
|
const getState = () => button.dataset.state !== 'inactive';
|
|
const setState = state => {
|
|
button.dataset.state = state ? 'active' : 'inactive';
|
|
update();
|
|
stateWatcher.call(getState());
|
|
};
|
|
|
|
if(stateful) {
|
|
pub.getState = getState;
|
|
pub.setState = setState;
|
|
pub.watchState = handler => { stateWatcher.watch(handler, getState()); };
|
|
pub.unwatchState = handler => { stateWatcher.unwatch(handler); };
|
|
}
|
|
|
|
let clickAction;
|
|
const click = async () => {
|
|
if(clickAction !== undefined) {
|
|
if(stateful) {
|
|
const result = await clickAction(getState());
|
|
if(typeof result === 'boolean')
|
|
setState(result);
|
|
} else
|
|
await clickAction();
|
|
}
|
|
};
|
|
pub.click = click;
|
|
|
|
button.addEventListener('click', () => click());
|
|
|
|
update();
|
|
|
|
pub.setAction = action => {
|
|
if(typeof action !== 'function')
|
|
throw 'action must be a function';
|
|
clickAction = action;
|
|
};
|
|
|
|
let preventEnable = false;
|
|
|
|
pub.getEnabled = () => !button.disabled;
|
|
pub.setEnabled = state => {
|
|
if(!preventEnable)
|
|
button.disabled = !state;
|
|
};
|
|
pub.disableWith = async callback => {
|
|
if(typeof callback !== 'function')
|
|
throw 'callback must be a function';
|
|
if(preventEnable)
|
|
throw 'preventEnable is true';
|
|
|
|
preventEnable = true;
|
|
const wasDisabled = button.disabled;
|
|
button.disabled = true;
|
|
|
|
try {
|
|
return await callback();
|
|
} finally {
|
|
button.disabled = wasDisabled;
|
|
preventEnable = false;
|
|
}
|
|
};
|
|
|
|
pub.setHidden = state => {
|
|
button.hidden = state;
|
|
};
|
|
|
|
return pub;
|
|
};
|