typescript - Call AngularJS 1.5 component's method from the controller? -

i have component plugged main page this

<rs-dropdown></rs-dropdown> 

the component defined rsdropdowncomponent class reference rsdropdowncontroller, usual stuff...

the component has $oninit() event handler calls datastore populate component data, event fired once component initialized.

the problem dont want component start loading data oninit() event.

i want able call component's method controller when want to.

basically need somehow access instance of component controller , call it's load function.

is possible?

someone mentioned using ng-if, or making child component more lenient asynchronous inputs better approach if possible, there's many things can do.

1 - can use eventing, create simple event service signatures like:

service.registereventhandler(id, function) service.unregistereventhandler(id, function) service.sendevent(id) 

register handler in child, , fire event parent when ready

2 - dark magic using 2-way bindings. in child component specify

bindings: {   darkmagic: '=' }, controller: function() {   this.$oninit = function() {     darkmagic = function() {            // data ready     };     ... 

then parent template <child data-dark-magic="$ctrl.placeholder">.... in parent controller, after compile, after postlink after digest cycle... can call this.placeholder(); execute function defined in child.

3 - can use one-way binding onchanges toggle state

  controller: function() {      this.ready = false; // should use oninit saving lines     this.$onchanges = function(changesobj) {         if (changesobj.isreadyproperty) {             this.ready = changesobj.isreadyproperty.currentvalue;         }     }   },   bindings: {     isreadyproperty: '<',   } 

then parent have <child is-ready-property="$ctrl.imready">... , toggle imready true in controller when data loaded.

there case when child under parent, example of tabset component , tab components. in case child (tab) component can require tabset controller, , use api defined there.

or use service communication, inject service both components, , maintain state way. keep in mind solutions though use factory patterns , not maintain state in angular recipes.

i'm sure there's many more ways, depends on use-case.

i still prefer make component more lenient handle no data case gracefully until receives something.

cheers