isComponent

function

 isComponent() 

Option name	Type	Description
el	Element	DOM element
return	Boolean	true, if it has milo component attached to it

function isComponent(el) {
    return el.hasOwnProperty(config.componentRef);
}

getComponent

function

 getComponent() 

Option name	Type	Description
el	Element	DOM element
return	Component	component attached to element

function getComponent(el) {
    return el && el[config.componentRef];
}

getContainingComponent

function

 getContainingComponent() 

Option name	Type	Description
node	Node	DOM Element or text Node
returnCurrent	Boolean	optional boolean value indicating whether the component of the element can be returned. True by default, should be false to return only ancestors.
conditionOrFacet	Function, String	optional condition that component should pass (or facet name it should contain)
return	Component

function getContainingComponent(node, returnCurrent, conditionOrFacet) {
    // check(node, Node); - can't check tiype here as it is most likely coming from another frame
    check(returnCurrent, Match.Optional(Boolean));
    check(conditionOrFacet, Match.Optional(Match.OneOf(Function, String)));

    var conditionFunc = _makeComponentConditionFunc(conditionOrFacet);

    return _getContainingComponent(node, returnCurrent, conditionFunc);
}


function _makeComponentConditionFunc(conditionOrFacet) {
    if (typeof conditionOrFacet == 'function')
        return conditionOrFacet;
    else if (typeof conditionOrFacet == 'string') {
        var facetName = _.firstLowerCase(conditionOrFacet);
        return function (comp) {
           return comp.hasFacet(facetName);
        };
    }
}


function _getContainingComponent(el, returnCurrent, conditionFunc) {
    // Where the current element is a component it should be returned
    // if returnCurrent is true or undefined
    if (returnCurrent !== false) {
        var comp = getComponent(el);
        if (comp && (! conditionFunc || conditionFunc(comp)))
            return comp;
    }

    // Where there is no parent element, this function will return undefined
    // The parent element is checked recursively
    if (el.parentNode)
        return _getContainingComponent(el.parentNode, true, conditionFunc);
}