UPDATE
Check out this alternative approach for a custom v-click-outside directive that can be implemented directly within your Vue component:
directives:
{
clickOutside:
{
bind(elem, binding, vnode)
{
elem.clickOutsideEvent = function(evt)
{
if (elem !== evt.target && !elem.contains(evt.target)) vnode.context[binding.expression](evt);
};
document.body.addEventListener('click', elem.clickOutsideEvent);
},
unbind(elem)
{
document.body.removeEventListener('click', elem.clickOutsideEvent);
}
}
},
Feel free to test out this implementation in your project:
import Vue from 'vue'
// Define constants and variables
const HAS_WINDOWS = typeof window !== 'undefined';
const HAS_NAVIGATOR = typeof navigator !== 'undefined';
const IS_TOUCH = HAS_WINDOWS && ('ontouchstart' in window || (HAS_NAVIGATOR && navigator.msMaxTouchPoints > 0));
const EVENTS = IS_TOUCH ? ['touchstart'] : ['click'];
const IDENTITY = (item) => item;
// Initialize the directive object
const directive = {
instances: [],
};
// Function to process directive arguments
function processDirectiveArguments(bindingValue)
{
const isFunction = typeof bindingValue === 'function';
if (!isFunction && typeof bindingValue !== 'object')
{
throw new Error('v-click-outside: Binding value must be a function or an object')
}
return {
handler: isFunction ? bindingValue : bindingValue.handler,
middleware: bindingValue.middleware || IDENTITY,
events: bindingValue.events || EVENTS,
isActive: !(bindingValue.isActive === false),
}
}
// Event handler function
function onEvent({ el, event, handler, middleware })
{
const isClickOutside = event.target !== el && !el.contains(event.target);
if (!isClickOutside)
{
return
}
if (middleware(event, el))
{
handler(event, el)
}
}
// Create a new instance of the directive
function createInstance({ el, events, handler, middleware })
{
return {
el,
eventHandlers: events.map((eventName) => ({
event: eventName,
handler: (event) => onEvent({
event,
el,
handler,
middleware
}),
})),
}
}
// Remove an existing instance of the directive
function removeInstance(el)
{
const instanceIndex = directive.instances.findIndex((instance) => instance.el === el);
if (instanceIndex === -1)
{
// Note: This can happen when active status changes from false to false
return
}
const instance = directive.instances[instanceIndex];
instance.eventHandlers.forEach(({ event, handler }) =>
document.removeEventListener(event, handler)
);
directive.instances.splice(instanceIndex, 1)
}
// Bind function for the directive
function bind(el, { value })
{
const { events, handler, middleware, isActive } = processDirectiveArguments(value);
if (!isActive)
{
return
}
const instance = createInstance({
el,
events,
handler,
middleware
});
instance.eventHandlers.forEach(({ event, handler }) =>
setTimeout(() => document.addEventListener(event, handler), 0)
);
directive.instances.push(instance)
}
// Update function for the directive
function update(el, { value, oldValue })
{
if (JSON.stringify(value) === JSON.stringify(oldValue))
{
return
}
const { events, handler, middleware, isActive } = processDirectiveArguments(value);
if (!isActive)
{
removeInstance(el);
return
}
let instance = directive.instances.find((instance) => instance.el === el);
if (instance)
{
instance.eventHandlers.forEach(({ event, handler }) =>
document.removeEventListener(event, handler)
);
instance.eventHandlers = events.map((eventName) => ({
event: eventName,
handler: (event) => onEvent({
event,
el,
handler,
middleware
}),
}))
}
else
{
instance = createInstance({
el,
events,
handler,
middleware
});
directive.instances.push(instance)
}
instance.eventHandlers.forEach(({ event, handler }) =>
setTimeout(() => document.addEventListener(event, handler), 0)
)
}
// Set up the directive in Vue
directive.bind = bind;
directive.update = update;
directive.unbind = removeInstance;
Vue.directive('click-outside', directive);