document.addEventListener("show" is not working in cordova with onsen

Abiraman Ramanathan

document.addEventListener("init", function(event) {
  if (event.target.id == "my-page") {
    document.getElementById("my-content").innerHTML = "I am fine!";
  }
}, false);

and

document.addEventListener("show", function(event) {
  if (event.target.id == "my-page") {
    document.getElementById("my-content").innerHTML = "I am fine!";
  }
}, false);

is not working in onsen-ui

munsterlander

@Abiraman-Ramanathan I believe @Fran-Diox answered your question here:

https://community.onsen.io/topic/247/cordova-google-map-plugin-not-shown-map

I also posted code there to help clarify. It would appear you are using Onsen 1.x and so the event you need to listen for is pageinit.

Omar Hassan

I have the same issue, Show event is not fired, i am using onsen 1.x,
Here is my code,

  document.addEventListener("show", function (event) {
                if (event.target.id == "service_requests-page") {
                   alert("init service_requests-page");
                }
            }, false);

Any one can help ?

munsterlander

@Omar-Hassan Try:

document.addEventListener("pageinit", function (event) {
                console.log(event.target.id);
            }, false);

Please report back if that records the page you want.

Omar Hassan

@Omar-Hassan said:

show

initpage works well but i need show not init.

munsterlander

@Omar-Hassan I don’t think show exists for Onsen 1.x. What did event.target.id dump out?

Fran Diox

@munsterlander It does not exist in Onsen 1. And also, show event has been changed slightly in master branch. Perhaps you cannot use it in that way anymore :(
Now it’s fired when you can actually see the page, i.e. after navigator pushPage.

munsterlander

@Fran-Diox Ah! I remember I had read that in the Github comments when you guys implemented that change. I don’t think it will affect my logic too much, but I will do some testing on it.

munsterlander

@Omar-Hassan Since there is not a show event, try this:

var is_visible = (function () {
    var x = window.pageXOffset ? window.pageXOffset + window.innerWidth - 1 : 0,
        y = window.pageYOffset ? window.pageYOffset + window.innerHeight - 1 : 0,
        relative = !!((!x && !y) || !document.elementFromPoint(x, y));
        function inside(child, parent) {
            while(child){
                if (child === parent) return true;
                child = child.parentNode;
            }
        return false;
    };
    return function (elem) {
        if (
            document.hidden ||
            elem.offsetWidth==0 ||
            elem.offsetHeight==0 ||
            elem.style.visibility=='hidden' ||
            elem.style.display=='none' ||
            elem.style.opacity===0
        ) return false;
        var rect = elem.getBoundingClientRect();
        if (relative) {
            if (!inside(document.elementFromPoint(rect.left + elem.offsetWidth/2, rect.top + elem.offsetHeight/2),elem)) return false;
        } else if (
            !inside(document.elementFromPoint(rect.left + elem.offsetWidth/2 + window.pageXOffset, rect.top + elem.offsetHeight/2 + window.pageYOffset), elem) ||
            (
                rect.top + elem.offsetHeight/2 < 0 ||
                rect.left + elem.offsetWidth/2 < 0 ||
                rect.bottom - elem.offsetHeight/2 > (window.innerHeight || document.documentElement.clientHeight) ||
                rect.right - elem.offsetWidth/2 > (window.innerWidth || document.documentElement.clientWidth)
            )
        ) return false;
        if (window.getComputedStyle || elem.currentStyle) {
            var el = elem,
                comp = null;
            while (el) {
                if (el === document) {break;} else if(!el.parentNode) return false;
                comp = window.getComputedStyle ? window.getComputedStyle(el, null) : el.currentStyle;
                if (comp && (comp.visibility=='hidden' || comp.display == 'none' || (typeof comp.opacity !=='undefined' && comp.opacity != 1))) return false;
                el = el.parentNode;
            }
        }
        return true;
    }
})();

To use this, do:

is_visible(elem) // boolean

You will have to either run a timer or an eventlistener for whatever your use case is.

What exactly are you trying to do though as maybe there is a better way?

isacfernando

Hi, peoples.

I used the code below:

document.addEventListener("init", function (event) {
            if (event.target.id === "consultarReservas") {
                $("#reservas").datepicker();
            }
});

And works with no problems.