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How can I dynamically control a Region Display Selector in Oracle APEX?

I'm hoping to select a particular Region to highlight on the page load based on the link the user follows to get to that page. This is a drill-down report with multiple options, so the goal is to have all options available but focus on the one the user selected to reduce the number of times a user has to navigate to/from the base report to the drill-downs.
Currently, I'm trying to implement this solution https://svenweller.wordpress.com.../, further explained in an Oracle Community discussion here: https://community.oracle.com/..., but it is not working for me.
What I have now is similar to what is shown in those examples, and for now I'm just trying to link to a static Region Display Selector (RDS) tab (the goal will be to have the selected Region be dynamic based on which link is clicked in the feeder page, but I'm clearly not there yet).
I have a Dynamic Action set to fire on Page Load event, and a True action that executes JavaScript code and uses the JavaScript in the example (both with and without the Timeout function suggested in the Oracle thread). I have set Static IDs for the RDS and Region, but when I load the page the RDS still defaults to Show All (or the first region if Show All is off).
Can someone help me understand what I'm doing wrong?
Thanks.
let sesStorage = apex.storage.getScopedSessionStorage({
useAppId:true,
usePageId:true});
setTimeout(sesStorage.setItem( "tabs.activeTab", "#R3" ) { apex.region("tabs").widget().aTabs("getTabs")["#R3"].makeActive();}, 300);
\\version without setTimeout
let sesStorage = apex.storage.getScopedSessionStorage({
useAppId:true,
usePageId:true});
sesStorage.setItem( "tabs.activeTab", "#R3" );

I have done something like this in the past. Create a hidden variable on the page P1_TEST, make sure to set the value not to be protected.
You will need to set the value of that variable when the link is clicked.
Then you need to add static IDs TAB1, TAB2 etc. to the tabs of you region display selector.
Then add a DA on Page Load:
if (apex.item("P1_TEST").getValue() === "Value1"){
$(".apex-rds [href='#TAB1']").trigger('click');
} else if (apex.item("P1_TEST").getValue() === "Value2"){
$(".apex-rds [href='#TAB2']").trigger('click');
}

How to show button based on the page you are coming from, Ionic?

I have home page that lists items, but also when I add an item I want to popToRoot(), to home page. Now, If I come to root from addItemPage, I want to show the button to save a list, to make a HTTP call..
Is it possible, I was thinking about passing the for example (fromAdd: true) to navCtrl and then based on that show the button(ngIf) ?

You can use any of the rootscope variables, navparams and service to set the value on the parent page and then access it in your ng-init function declared on you child page and show your button on the basis of that value by using ngIf expression.

Change a state param and not reload the state. Feasible?

Using UI-Router v1.0rc1, is it possible to transition to the current state, changing only one param, without reloading the state. Let me give you my use case:
On the left of the page I show the listings titles of a user. When clicking on a title the main content is changed to... the listing data obviously. When clicking on another title, the current 'listing' state is reloaded and fed with other data. In my listing template, I have a map. Each time a new listing must be displayed, the dom is destroyed and reloaded (with the same template) which kills the map and rebuilds it. I would prefer to only change the params (the listing id) of the listing state, detect it and change the content of the template (and reposition the map). The actual listing data is currently loaded in the resolves thanks to the id param.
Is it something feasible?

Try this:
$state.go('some.state', { param: 'x' }, {reload: false});
more about reload can be found here

Ember transitionTo only if current route is different

In my Ember app, I initially start at the root level (/) and I have multiple links (say Link1, Link2, Link3)
Now each of these links displays a common grid i.e. I use same route/controller/template JS, but re-render the grid, by setting some attributes dynamically on the controller
Thus in my application.js, I do
this.controllerFor('my-grid').set('attr1', params[0].value);
this.controllerFor('my-grid').set('attr2', params[1].value);
this.transitionTo('my-grid');
Is this the correct way to transition ?
I mean, specifically I need
this.transitionTo('my-grid');
to be called only once (say on click of link1 from root), since after then, clicks on link2, link3 would just need a change of attribute values on my same controller and should just re-render the grid (after server api call)
Please suggest if there is some condition that I can check for calling
this.transitionTo('my-grid');

In your application you can check ApplicationController.currentPath:
this.controllerFor('my-grid').setProperties({
attr1: params[0].value,
attr2: params[1].value
});
if (this.controllerFor('application').get('currentPath') !== 'my-grid') {
this.transitionTo('my-grid');
}

How do I change the URL of using $location with angularJS

I am currently trying to set up a table to go to a profile page when you click a row. But $location.url will simply append the 'profile.html' to the end of the current html page and not take me to the profile page. How do I change the current url to allow me to go to my page.
index html:
http://localhost:9080/AgentOnlineApp/index.html
html I get when I click the row:
http://localhost:9080/AgentOnlineApp/index.html#/profile.html
I want:
http://localhost:9080/AgentOnlineApp/profile.html
current AngularJS code:
$scope.selectTableRow = function(agent)
{
$location.url('/profile.html');
}

You might want to try this to load another page (outside your application):
$window.location.replace("profile.html")
Don't forget to inject $window

If you want to use the HTML5 history API, you need to set:
$locationProvider.html5Mode(true);
If you actually want to change the location entirely and reload the page, you are not quite using Angular as intended since this wouldn't be a single page app. However, you could do it with window.location = "profile.html"