Material Ui Dialog
Ronnie Isackson
Form dialogs allow users to fill out form fields within a dialog.For example, if your site prompts for potential subscribers to fill in their email address, they can fill out the email field and touch 'Submit'.
Confirmation dialogs require users to explicitly confirm their choice before an option is committed.For example, users can listen to multiple ringtones but only make a final selection upon touching "OK".
You can create a draggable dialog by using react-draggable.To do so, you can pass the imported Draggable component as the PaperComponent of the Dialog component.This will make the entire dialog draggable.
With the default configuration when you open up a material dialog, it darkens the background a bit. Now I would like it to be a blurred background instead. I tried playing around with the css styles but I could not get the background of the window to change (couldn't get the right selector inside of component template).
closes the dialog. But most of the time we want the response from server to be rendered immediately without refreshing the page. To do that, we pass the response as an arugument to the close method as shown below
This dialog widget does not have any opinion about the contents of thedialog. Rather than using this widget directly, consider using AlertDialogor SimpleDialog, which implement specific kinds of Material Designdialogs.
We are going to cover many of the most common use cases that revolve around the Angular Material Dialog, such as: common dialog configuration options, passing data into the dialog, receiving data back, and dialog layout options.
The content of this component could also be anything, and there is no need to use any of the auxiliary Angular Material directives. We could build the body of the dialog out of plain HTML and CSS if needed.
Edit: I kinda found a solution using the click-outside package and setting dialogRef.close() when clicking outside of the popup, but now I can only open my popup with a double click and not a single click... assuming the single click is considered a "click outside".
Effects are a powerful model for handling side effects in your application. Commonly this means when you are making a HTTP request in a NgRx powered application you will use an effect to handle the communication with the service but they can do so much more than that. And frankly this is what I usually used them for until I read -using-ngrx-effects-for-this#handling-the-flow-of-a-angular-material-dialog .
I became intrigued by the idea of offloading some component material dialog code into the effect and started viewing the life cycle as a series of events and using the effect to talk to other effects. This can keep components more simple and pure where they use selectors to read data and dispatch actions in response to events. When components are pure and simple this makes them easier test and easier to change when future requirements are different. This was a motivator for me to start looking down this path but first I wanted to make sure to follow some common best practices and make sure that I wasn't creating an anti-pattern.
Now this is a pretty contrived example but it illustrates simply what the life-cycle is usually like with a dialog. Breaking it down we inject the service for Mat Dialog. Then we have a click handler method that handles the button click and opens the dialog with data we want to give the dialog component. In the Dialog Component we inject a reference to the opened dialog and inject a Token that carries the data that we passed the dialog. Then when the user wants to save we close the dialog and give it some data.
Back in the host component when we call open that returns the dialog reference of the opened dialog. This reference has a after closed method on it that returns an observable that carries the data that we gave it when we called close on the dialog reference in the Dialog Component. With this data we do whatever we want usually somewhere downstream making a HTTP call that posts the data back to the server.
Now this is a contrived example but it can be a bit confusing. In the openDialog method on the component we do more than just open the dialog. We handle the whole life-cycle of the dialog and handle the end result which is getting data back from the dialog and then doing something with. This can make testing this component and this method a little more complicated than it could be.
Two important things of note here. The first is the dispatch:false on the dialogOpened$ effect. We use this to tell NgRx that we are not going to have any actions coming out from this effect. If we didn't use this we would end up in a infinite loop with a warm computer and a crashed browser. Second notice that I have an effect that is listening for the Success action that would have been dispatched upon completion of a successful HTTP request. We use this to dispatch the dialogClose action because we don't wanna close our dialog until the data has been saved or at all if there is an error.
To close I like Tim find writing the life-cycle of a mat dialog a lot easier when its moved to the effect model. With the compos-ability of effects you can easily build complex features. This offloads some logic into our effect model keeping our components lean and simple and easy to test.
What about if I need to change the date while the dialog box is open in this concept?
for example, I have a datepicker in a modal window, when it is changed, a request is made and the data needs to be changed to the new ones that came in, how can this be done?
Material dialogs receive data as apart of the config object. The data could be anything so if you use an observable and subscribe to it in the dialog then it would observe the changes made from elsewhere.
This is a great post. Seems like the new ComponentStore may be a good fit for this type of interaction. Use a smaller scoped store to open a dialog? I'm not sure how to make this work since ComponentStore does not support actions. Any thoughts?
Component Store is a great fit for this. Using regular store makes sense if you have global dialogs or snackbars (similar apis). With Component store I would use an effect with no params (when nothing is passes it gets a signal or trigger to act off of) The tricky part would be how you setup the flow of the lifecycle. Do you use multiple effects and model it like that or do you handle the flow in one effect? Something I need to explore but alas haven't had time.
it is not good as it would be. if my dialog component is a dumb(presentation) component it won't work, in dumb component we should not have access to the store,
I always use feature and dumb component as angular architecture. and my dialogs are always dumb component because they just show some data on the screen like fill in a form ... .
To recover an off screen dialog, do what it takes so that the dialog should be showing, then press Alt and Space, and tap the M key. You can release those keys, and then tap any arrow key. Move your cursor around and the dialog will be attached to the cursor, ready for you to drop it off anywhere on the screen.
@colin that is a rough approximation of the fairly well known manual method of capturing an errant dialog.
But from what I know it normally only works on floating dialog (Preferences/model Info etc) rather than Tray options.
The DialogHost consists of three individual UI components: the host control, the overlay, and the dialog. The host control contains the content that the dialog should be placed on top of. Typically, this is placed near the root of your XAML so that it covers everything. The overlay is the darkened region that covers all of the content within the host control. Finally, the dialog itself contains the content to display. By default, the dialog shows inside of a popup. Since a popup is a separate window, the dialog can be larger than its parent window. If you want the dialog constrained to its parent window, you can apply the alternate MaterialDesignEmbeddedDialogHost style to the DialogHost.
The DialogHost works well with applications using both MVVM and code-behind architecture. Because of this, there are several ways to show a dialog. You may elect to use any number of these options in your app.
The DialogHost provides two RoutedCommands for showing and hiding dialogs; OpenDialogCommand and CloseDialogCommand, respectively. This is the simplest pure XAML option as it simply walks up the element tree until it encounters a DialogHost control. Set this as the Command property, and it will show the dialog.
For simple programmatic control over the state of the dialog, the DialogHost provides an IsOpen property. Toggling the state of this property causes the dialog to show or hide. The IsOpen property can also pair with data binding, making it easy to use in MVVM architecture.
The Show method also includes overloads with callback delegates invoked when the dialog is opened or closed. You can also register for the DialogOpened and DialogClosed events directly on the DialogHost. The event arguments for these callbacks contain a DialogSession object. This session object can update the content of a dialog that has already been shown or close a visible dialog.
Finally, there are additional overloads for passing a dialog identifier. If there is only a single DialogHost instance, the Show method will automatically use it. However, in cases with more than one DialogHost instance, you must specify a dialog identifier. This unique id identifies which DialogHost control to use.
Reason being, the dialog or rather the overlay element is rendered at the HTML's Body level by default. In order to show the dialog in a "fullscreen region", the overlay element has to be rendered within the "fullscreen region".
Angular Material's Simple Dialogues offer a simplified method of obtaining user input or presenting targeted information in a modal overlay, hence improving user experience and interactivity.In our first example, we are going to use the simple material dialog component and for that, we need to follow a few steps as described below.
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