Mithril redraw only 1 module - mithril.js

Question

If I have like 10 m.module on my page, can I call m.startComputation, m.endComputation, m.redraw or m.request for only one of those modules?
It looks like any of these will redraw all of my modules.
I know only module 1 will be affected by some piece of code, I only want mithril to redraw that.

Answer 1

Right now, there's no simple support for multi-tenancy (i.e. running multiple modules independently of each other).
The workaround would involve using subtree directives to prevent redraws on other modules, e.g.
//helpers
var target
function tenant(id, module) {
return {
controller: module.controller,
view: function(ctrl) {
return target == id ? module.view(ctrl) : {subtree: "retain"}
}
}
}
function local(id, callback) {
return function(e) {
target = id
callback.call(this, e)
}
}
//a module
var MyModule = {
controller: function() {
this.doStuff = function() {alert(1)}
},
view: function() {
return m("button[type=button]", {
onclick: local("MyModule", ctrl.doStuff)
}, "redraw only MyModule")
}
}
//init
m.module(element, tenant("MyModule", MyModule))
You could probably also use something like this or this to automate decorating of event handlers w/ local

Answer 2

Need multi-tenancy support for components ? Here is my gist link
var z = (function (){
//helpers
var cache = {};
var target;
var type = {}.toString;
var tenant=function(componentName, component) {
return {
controller: component.controller,
view: function(ctrl) {
var args=[];
if (arguments.length > 1) args = args.concat([].slice.call(arguments, 1))
if((type.call(target) === '[object Array]' && target.indexOf(componentName) > -1) || target === componentName || target === "all")
return component.view.apply(component, args.length ? [ctrl].concat(args) : [ctrl])
else
return {subtree: "retain"}
}
}
}
return {
withTarget:function(components, callback) {
return function(e) {
target = components;
callback.call(this, e)
}
},
component:function(componentName,component){
//target = componentName;
var args=[];
if (arguments.length > 2) args = args.concat([].slice.call(arguments, 2))
return m.component.apply(undefined,[tenant(componentName,component)].concat(args));
},
setTarget:function(targets){
target = targets;
},
bindOnce:function(componentName,viewName,view) {
if(cache[componentName] === undefined) {
cache[componentName] = {};
}
if (cache[componentName][viewName] === undefined) {
cache[componentName][viewName] = true
return view()
}
else return {subtree: "retain"}
},
removeCache:function(componentName){
delete cache[componentName]
}
}
})();