Angular Material Tutorial - 19 - Input

Codevolution
1 Apr 201906:39

Summary

TLDRThis video script offers an insightful guide on utilizing Angular Material's input components, focusing on the form field component and various input controls like text areas and select elements. It explains the process of importing necessary modules, creating and customizing input fields with labels, hint labels, and adjusting appearances such as legacy, standard, fill, and outline. The script also touches on theming and changing the default color scheme to accent or warn, providing a comprehensive understanding of Angular Material's form field and input components.

Takeaways

  • 📊 Start by importing the necessary Angular Material modules: MatFormFieldModule and MatInputModule.
  • 🖋 Wrap input elements in a MatFormField component to create a complete input control.
  • 🏷 Use the matInput attribute for the input element to integrate it with the form field.
  • 🔖 Add a label to the input field with the MatLabel component for better usability.
  • 🔄 Control label behavior with the floatLabel attribute, which can be set to 'never', 'always', or 'auto'.
  • ✅ Automatically append an asterisk to the label for required fields, or use the hideRequiredMarker attribute to disable this.
  • 💬 Provide additional information with a hint label using the MatHint component.
  • 📐 Adjust the appearance of the form field with the appearance attribute, which can be set to 'legacy', 'standard', 'fill', or 'outline'.
  • 🎚 Customize the color of the input control using the color attribute, with options like 'primary', 'accent', or 'warn'.
  • 📚 For advanced usage, refer to the official Angular Material documentation on incorporating form fields with other messages and Angular forms concepts.

Q & A

  • What are the main components discussed in the video related to input in Angular Material?

    -The main components discussed are the form field component and the input component, which includes controls like inputs, text areas, and selects.

  • How do you import the necessary modules for form field and input in Angular Material?

    -You can import the necessary modules by adding 'mat-form-field' and 'matInputModule' from the '@angular/material' package to the 'imports' array in your module file.

  • What is the purpose of the form field wrapper component in Angular Material?

    -The form field wrapper component serves as a common wrapper for input components, providing a consistent styling and behavior for the input elements.

  • How can you add a label to an input field in Angular Material?

    -You can add a label to an input field by using the 'mat-label' component within the 'mat-form-field' tag and assigning a label to the 'mat-label' element.

  • What is the default behavior of the label in Angular Material when text is entered into the input field?

    -By default, when text is entered into the input field, the label will float to the top, acting as a placeholder.

  • How can you control the floating behavior of the label in Angular Material?

    -You can control the floating behavior of the label using the 'floatLabel' attribute on the form field component. It can be set to 'never', 'always', or 'auto'.

  • How does marking an input element as required affect the label in Angular Material?

    -When an input element is marked as required, an asterisk (*) is automatically appended to the end of the label.

  • Can you disable the automatic appending of an asterisk to the label in a required field in Angular Material?

    -Yes, you can disable this behavior by using the 'hideRequiredMarker' attribute on the form field component.

  • How can you add a hint label to an input field in Angular Material?

    -You can add a hint label by using the 'mat-hint' component within the 'mat-form-field' tag and assigning a hint message to the 'mat-hint' element.

  • What are the different appearances that can be applied to a form field in Angular Material?

    -The different appearances include 'legacy', 'standard', 'fill', and 'outline'. 'Legacy' is the default, 'standard' provides consistent spacing, 'fill' applies a filled background, and 'outline' surrounds the input with a border.

  • How can you change the theming of an input control in Angular Material?

    -You can change the theming of an input control by setting the 'color' attribute on the form field component to 'accent' or 'warn', reflecting the primary or secondary colors of the theme.

  • Where can one find more information on incorporating messages with form fields in Angular Material?

    -More information on incorporating messages with form fields can be found in the official Angular Material documentation, which provides clear guidance on the topic.

Outlines

00:00

📝 Introduction to Angular Material Input and Form Field Components

This paragraph introduces the concept of using Angular Material components for creating input controls such as text areas and select elements. It emphasizes the importance of the form field component as a wrapper for input elements. The process begins by importing the necessary modules from the Angular Material library. The paragraph then demonstrates how to create a basic input element with a form field wrapper and the matInput attribute. Customization options such as adding labels, modifying label behavior with the floatLabel attribute, and handling required field markers are discussed. Additionally, the paragraph covers how to set hint labels using the matHint directive and how to change the appearance of the form field with the appearance attribute, including the standard, fill, and outline options.

05:01

🎚 Customizing Appearance and Theming of Angular Material Form Fields

This paragraph delves into the customization of the appearance of form fields in Angular Material. It introduces the different appearance options: fill, outline, and legacy. The fill appearance provides a filled background for the form, while the outline appearance encompasses the form with a border. The paragraph explains how to switch between these appearances to suit the design requirements. Furthermore, theming is discussed, highlighting how to change the color of form fields to reflect different themes, such as primary, accent, or warn colors. The paragraph concludes by mentioning the importance of consulting the documentation for incorporating messages with form fields, which requires knowledge of Angular forms concepts.

Mindmap

Keywords

💡Angular Material

Angular Material is a UI components library for Angular applications, providing a wide range of pre-built, customizable, and accessible components. In the context of this video, Angular Material is the framework being used to build forms with input controls like text fields and select boxes.

💡Form Field Component

The Form Field Component is a wrapper element in Angular Material that encapsulates other form controls like inputs and select elements. It provides a consistent styling and behavior for these controls, including the addition of labels, hints, and visual appearance adjustments.

💡Input Component

The Input Component is a specific form control used for capturing text input from users. In Angular Material, it is combined with the Form Field Component to create a complete, styled input field.

💡Label

In the context of form controls, a label is a text description that identifies the purpose of the input field it is associated with. In Angular Material, labels can be customized in terms of their floating behavior and positioning.

💡Float Label

Float Label is a behavior in Angular Material where the label of an input field moves up and becomes placed above the input when the field is focused or has content. This behavior can be controlled with the floatLabel attribute on the Form Field Component.

💡Hint Label

A Hint Label provides additional information or guidance to users about the input field it is associated with. In Angular Material, hint labels can be added using the matHint component and can be aligned to the left or right of the input field.

💡Appearance

Appearance in Angular Material refers to the visual style of form fields. The library offers different appearance options such as 'legacy', 'standard', 'fill', and 'outline', which affect the spacing, background, and border of the form elements.

💡Theming

Theming in Angular Material involves customizing the color scheme of the components to match the overall design theme of the application. Colors can be set to reflect the primary or accent colors, or to indicate warnings.

💡Angular Forms Concepts

Angular Forms Concepts refer to the underlying structure and methods used in Angular for handling form data, validation, and user input. These concepts are essential for creating dynamic and interactive forms in Angular applications.

💡Select Control

Select Control is a form element that allows users to choose one or more options from a dropdown list. In Angular Material, the select control can be styled and customized using similar methods as other form controls.

Highlights

Importing the necessary Angular Material modules, namely MatFormFieldModule and MatInputModule.

Creating the initial input control by using the MatFormField and input elements with the matInput attribute.

The requirement for a form field wrapper when using input elements within Angular Material.

Customizing the input control by adding a label with the MatLabel component and observing its floating behavior.

Adjusting the label's float behavior with the floatLabel attribute, which can be set to never, always, or auto.

Automatic addition of an asterisk to the label for required input fields and the option to disable this with the hideRequiredMarker attribute.

Adding a hint label using the MatHint component and aligning it with the align attribute.

Changing the appearance of the form field with the appearance attribute, offering options like legacy, standard, fill, and outline.

The standard appearance providing more consistent spacing for form elements.

The fill appearance style, which gives the input a filled background.

The outline appearance style, which surrounds the input with a border.

Theming the input control by setting the color attribute to reflect different theme colors like primary, accent, or warn.

The default color scheme reflecting the primary color of the theme.

The option to customize the input control with accent and warning themes.

The importance of consulting the documentation for incorporating messages with form fields and understanding Angular forms concepts.

Transcripts

00:00

in this video let's take a look at the

00:02

components related to an input in

00:05

angular material when it comes to

00:08

controls like inputs text areas and

00:11

select we always discuss them in

00:14

relation to a common wrapper component

00:17

and that is the form field component so

00:21

when you talk about an input component

00:22

you're effectively talking about the for

00:25

field component and the input component

00:28

let's take a closer look at both those

00:31

components in this video the first step

00:35

is to import the two concerned modules

00:37

so in material module dot es I'm going

00:41

to import mat form field module and mat

00:45

input module make sure to add them to

00:48

the material array as well

00:52

now we can create our first input

00:54

control so in AB component HTML I'm

00:59

going to add mat form field and within

01:03

these tags I'm going to add input with a

01:08

matte input attribute please make note

01:11

that every input element has to have

01:14

this form field wrapper and to the input

01:18

element itself we add the mat input

01:20

attribute now if I save this and take a

01:24

look at the browser you can see that we

01:26

have the most basic material input

01:29

element let's see how we can customize

01:32

this input control first up let's see

01:35

how to add a label to the input field so

01:38

to add a label use the mat label

01:41

component so within the mat form field

01:43

opening tag mat label and let's call

01:47

this name if you take a look at the

01:49

browser you can see the label it behaves

01:53

as a placeholder when there is no text

01:56

start typing and the label floats to the

01:59

top and this is the default behavior we

02:04

can of course change this so on the form

02:07

field make use of the float label

02:10

attribute to control the behavior of the

02:13

label

02:15

so float label can be set to never in

02:20

which case the labels will not float and

02:23

is hidden when you type something you

02:27

can also set it to always

02:31

in which case the label is floating even

02:34

when there is no text in the input and

02:37

you can also set it to auto which is the

02:40

default value

02:45

another important point is how the label

02:48

is presented for a required form field

02:52

so if I mark the input element as

02:55

required

02:59

you can see that now the label has the

03:02

asterisk automatically appended no

03:06

additional styling is required if you

03:09

want to disable this behavior you can

03:11

make use of the height required marker

03:14

attribute on the form field so height

03:17

required marker if I go back to the

03:21

browser the asterisk is not present for

03:24

a required field the next thing we can

03:27

do with the font field is setting a hint

03:30

label for that we make use of the map

03:33

hint component so within the form field

03:35

I'm going to add Matt him and let's have

03:41

min 5 characters if you take a look at

03:46

the browser you can see that the hint is

03:49

placed right below the input and by

03:52

default it is left aligned we can right

03:55

align it using the align attribute and

03:58

setting it to a value of end so Matt

04:01

hint aligned is equal to end if we go

04:08

back to the browser you can see that the

04:10

hint is now right aligned next let's

04:14

talk about appearance we can control the

04:17

appearance of the form field using the

04:19

appearance attribute by default the

04:22

appearance has a value of legacy which

04:25

is what we've seen so far so appearance

04:29

is equal to legacy we also have an

04:34

appearance value of standard and this is

04:37

just an updated version with more

04:39

consistent spacing so I'm going to copy

04:43

paste it and change appearance legacy to

04:48

standard if I save this and go back to

04:51

the browser you can see that there is

04:54

slight difference in how the spacing is

04:57

for the standard appearance now we have

05:01

two more appearances fill and outline so

05:05

this is going to be fill this is going

05:08

to be outline the fill appearance this

05:13

plays the form filled with a filled

05:14

background and the outline appearance

05:17

shows the font filled with a border all

05:19

the way around and not just an underline

05:22

so if I go back to the browser you can

05:24

see that we have a filled input element

05:27

and then we also have one which has

05:29

border all the way around so this is

05:33

Phil and this is appearance outline

05:37

finally let's discuss about theming by

05:41

default the colors reflect the primary

05:43

color of the theme we can set the color

05:46

attribute to accent and also warn if

05:49

required so on the form field color is

05:54

equal to accent and on this one color is

05:58

equal to warn if you now take a look at

06:01

the browser the first control is accent

06:05

themed and the second is warning themed

06:08

now on a side note please go through the

06:11

documentation on how to incorporate

06:13

other messages with form fields it

06:17

requires a bit of knowledge on angular

06:19

forms concepts which I will not be

06:21

covering here but the documentation is

06:24

pretty clear so you should be in a good

06:27

position all right that is about the

06:30

input control wrapped inside a form

06:33

field component in the next video let's

06:36

take a look at the Select control

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関連タグ
Angular MaterialForm ControlsInput FieldsFront-End DevelopmentUI CustomizationWeb DesignLabel BehaviorAppearance OptionsThemingInteractive Tutorial
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