A NativeScript plugin to deal with Global events
This is released under the MIT License, meaning you are free to include this in any type of program -- However for entities that need a support contract, changes, enhancements and/or a commercial license please contact me at http://nativescript.tools.
I also do contract work; so if you have a module you want built for NativeScript (or any other software projects) feel free to contact me nathan@master-technology.com.
tns plugin add nativescript-globalevents
To use the module you just require() it:
require( "nativescript-globalevents" );Notice: You do NOT need to keep a reference to it; and you only need to load it once.
It will automatically attach its methods to all the proper classes in the NativeScript library making it act as if they are built in.
What this does is automatically add support to allow you to setup events on all the page events globally. For example; if you need a pageLoaded event to occur on every page; you can use this library to get a global pageLoaded event.
Events currently on the Page globally that are supported are:
- Page.navigatingToEvent
- Page.navigatedToEvent
- Page.navigatingFromEvent
- Page.navigatedFromEvent
- Page.shownModallyEvent
- Page.showingModallyEvent
- View.loadedEvent
- View.unloadedEvent
If you have any other global events you would like supported please open an issue on the github issue tracker and I will investigate its relevance.
Well, my usage is I have several plugins that need to be notified when a new page is loaded/unloaded to allow custom handling to occur automatically. It could be useful for your own app if you need to do something globally when every page is loaded or unloaded.
require('nativescript-globalevents'); // need only once in the application total
var Page = require('ui/page').Page;
Page.on(Page.navigatingToEvent, function() { console.log("We have navigated to a new page!"); });If you need to track globally an event and you don't want to put a handler in each separate page.xml/page.js file.
Static Page class now has four new STATIC functions
If thisArg is null/undefined it will use the current page's "this".
If callback is null on the off/removePageHandler it will remove ALL handlers.