I created a project using Angular 14 and #NGRX. In my project has a feature called drag and drop.
The drag value exists in one component and drop that value into another component. These components are loaded from two different URLs. Therefore, I have two different stores.
The store of drag window has a value and the drop window needs to access that value exist in drag window. But, when I try get the value, the selector always checks in drop window store.
Are there any method to access or communicate between that kind of two different stores. Please help me to resolve this issue.
Related
I am working on a React Native project, and I am currently focused in the Chatroom aspect. Due to user roles, this component is embedded in another component for 2 of the 3 user types, but navigated to (not embedded in anything other than App.js) for the other type.
This means sometimes the app uses the props it was supplied with, and other times it uses the props.route.params?.item syntax to extract information. As is such its difficult to maneuver with useEffects to make sure it works on both sides.
The issue I am facing is with the embedded version of this component. It takes three props, the chatroom, and two booleans that are unrelated to this. The chatroom can change as a GUARDIAN user can see their CHILD user's messages, but they cannot text in them (those are the other two boolean values). From the parent component, users can toggle whether they are the Guardian accessing their own chat, or if they want to view their children' chats. While the all three values change properly (I console.log'd this in the parent component to confirm) the chatroom does not change inside of the embedded component.
I will show you what I mean...
// PARENT COMPONENT //
function renderMessageThread(chat){
console.log("\n\n\n", chat[0].messages.length, "LANDING")
console.log(msgUser.id, isThisChatMine())
return <MessageThread hardCodedChat={chat} hardCoderUserId={msgUser.id} isItMe={isThisChatMine()} />
}
The console.logs show the proper values. Inside the MessageThread component, both hardCoderUserId and isItMe are correct values, even when isItMe changes values. hardCodedChat, however, never has its value changed from the first time it is created. Does anyone have any ideas on how to have this changes as well?
I want to create a generic component that should detect required component View outside click (hide the View/dropdown, etc. when pressed outside). Basically it's for the Autocomplete Search Dropdown but I guess such functionality could be used in the future for other things.
The content should be dynamic and could be passed from any level of the app because such functionality is a common UX thing.
It shouldn't be modal that always render content at the screen center because a dropdown should be opened below its trigger, etc. So it should respect the initial component position. (In think to use onLayout/measure API of the initial position when passing the content into the Backdrop)
I researched a lot of resources and found that the one possible way is:
Create a TouchableWithoutFeedback layer (Backdrop) at the top level of the app.
make it fullscreen with/height
When dropdown is shown: render the Backdrop and onPress on it - close the dropdown & backdrop.
The main question is: How to pass a generic content into this Layer and save its relationship with the parent/props, re-render when needed, etc.?
Please, keep in mind, that the component which should pass content for this layer could be deep inside the app.
I guess it could be done via Context API, etc. but I'm not sure if it's the best possible way.
P.S. in the case of web it's a trivial task: create a fullscreen layer -> use a portal -> move content at the top level of the app -> render it at the required X\Y position and listen for the outside press.
I didn't expect that such functionality will be a problem in the case of RN.
Thanks for any help.
I found this question that is similar, but it did not explain the issue I am trying to solve for. (Using Vue.js 2)
I have an array of objects (users), that I display as a list.
I want to open an "edit user" modal component, which needs to prefill the form values with the user data (exact parent object), but I do not want to edit the parent data until I click a save button that verifies the data before emitting an input event with the new values of the object.
I do not want to manually call out each property to create a new "clean" object (if I change the data type this is a headache), but Vue is adding its reactivity to the user object and therefore modifying the value in the component updates the parent value at the same time.
I also want to wait for the server to confirm a change is saved before emitting the input event; therefore the parent won't update until the data is confirmed on the server.
Is there a recommended pattern for non-reactively modifying props in components, instead using the emitted input event to update, as per the Vue component prop/event specs?
Note: I already have a working example, save for the concern with separating the reactivity bit.
I am trying to create a network workflow with Cytoscape and AngularJS 1.6
After creating two nodes, user is able to create an edge between them. For this I am using cy.on('cxttap') cytoscape function to detect right clicks on both the nodes and then insert a new edge.
This works fine. Until I added a new view, where the user can see saved workflows from the database. The problem is, if I open the Viewing tab and then go back to creation tab, the cy.on('cxttap') function is called twice, and two edges are inserted on the cytoscape canvas, but only one entry is made in my scope variable. I used to have the same factory for both the views but now I am using different angular factories for each.
If I open switch between these tabs multiple times, the number of times I open the viewing tab, is the number of times the function is called, hence more the number of lines.
Here (https://jsfiddle.net/y47kwpg7/4/) is the snippet with the code for both my views with their controllers. "Creation View" --> "MlalTextWorkflowGeneratorCtrl" and "Viewing View" --> "MlalTextWorkflowViewerCtrl".
(Please forgive me, I don't know how to make it work in a single file)
The factory I have here is for the cytoscape canvas, and have a similar one for another view, but with a different id selection.
Thank you for your help!
You either need to
(1) remove old listeners if you're re-using an instance, or
(2) create a new instance each time you create a new view.
#maxkfranz 's answer guided me to do a little more debugging and finally I found out the problem.
The problem was I had some listener functions that I called from my controller in order to detect events on the cytoscape nodes. And the listeners to fire were stored in a a variable workflowGraph.listeners. you can see the old code []1. The problem was this variable was not emptied anytime my controller was reloaded, because I was calling the listeners from my controller, they were being added to this variable once again. So, one listener had multiple functions to call.
The method I used to solve this was to create a new "listener" type function I had earlier for cytoscape events, which I would call everytime my controller is loaded, to empty the listeners variable for my cytoscape factory.
In cytoscape factory
workflowGraph.reinitialize = function () {
workflowGraph.listeners = {};
};
In controller
workflowCreation is the name of the factory
workflowCreation.reinitialize();
This would simply empty the listeners variable from the factory.
Remember to call this in your controller after cytoscape initialisation and before calling any other listener functions
Hope this helps someone.
I'm having trouble understanding conceptually what I should do while trying to make my first large Javascript web application.
Depending on which tab a user has selected, I show different content inside a container. The content is more than just text and uses different Javascript functions and events. I am using the Yahoo! UI Library's "TabView" implementation, but the way that this issue should be handled would probably apply to other Tab approaches.
What I was thinking of doing was basically the following:
Create separate modules for each tab (e.g. MYAPP.modules.tabCalendar and MYAPP.modules.tabJournal). When the user clicks on a different tab (or navigates with browser buttons to a previous tab state), I could call MYAPP.modules[oldModule].disable() and MYAPP.modules[newModules].enable(). These functions would subscribe or unsubscribe their custom events (for example, a general click handler attached to the container).
An alternate approach to dealing with events might be to have a single global click handler. If the click is inside the container, then determine which tab is currently selected and send the click event to MYAPP.modules[currentTab].onClick().
Or, the global click handler could fire a Custom Event to which the modules have subscribed since page load, and each module's onClick events will run and determine whether or not they should do anything.
There seem to be a lot of options, but I've been having trouble finding resources that talk about the best ways to do things like this. Am I on the right path? How should I handle this?
Use the events already built into TabView to queue your JS to do things.
http://developer.yahoo.com/yui/tabview/#handlingevents
For tab changes you'll be told the previous/next tabs selected and such which should be more than enough for your JS to figure out what it should do. If you want to write a translation layer that'll look at the events and do something based on it that's fine but it's not strictly necessary.
I'm a bit fuzzy on the problem.
Yes, you should modularize your code.
Have each module setup event handlers on the elements in their respective container.
That's it. YUI TabView handles the tab switching so you don't need to enable/disable anything.