Struct Button

pub struct Button {
    pub text: String,
    pub icon: Option<Icon>,
    pub color: Option<Color>,
    pub on_click: Option<Box<OnClick>>,
    pub disabled: bool,
    pub alt_text: String,
}

A text, icon, or text and icon button that users can click. For an example in Google Chat apps, see Add a button.

To make an image a clickable button, specify an [Image][google.apps.card.v1.Image] (not an [ImageComponent][google.apps.card.v1.ImageComponent]) and set an onClick action.

Google Workspace Add-ons and Chat apps:

Fields

text: String

The text displayed inside the button.

icon: Option<Icon>

The icon image. If both icon and text are set, then the icon appears before the text.

color: Option<Color>

If set, the button is filled with a solid background color and the font color changes to maintain contrast with the background color. For example, setting a blue background likely results in white text.

If unset, the image background is white and the font color is blue.

For red, green, and blue, the value of each field is a float number that you can express in either of two ways: as a number between 0 and 255 divided by 255 (153/255), or as a value between 0 and 1 (0.6). 0 represents the absence of a color and 1 or 255/255 represent the full presence of that color on the RGB scale.

Optionally set alpha, which sets a level of transparency using this equation:

pixel color = alpha * (this color) + (1.0 - alpha) * (background color)

For alpha, a value of 1 corresponds with a solid color, and a value of 0 corresponds with a completely transparent color.

For example, the following color represents a half transparent red:

"color": {
    "red": 1,
    "green": 0,
    "blue": 0,
    "alpha": 0.5
}

on_click: Option<Box<OnClick>>

Required. The action to perform when a user clicks the button, such as opening a hyperlink or running a custom function.

disabled: bool

If true, the button is displayed in an inactive state and doesn’t respond to user actions.

alt_text: String

The alternative text that’s used for accessibility.

Set descriptive text that lets users know what the button does. For example, if a button opens a hyperlink, you might write: “Opens a new browser tab and navigates to the Google Chat developer documentation at https://developers.google.com/workspace/chat".

Trait Implementations

impl Clone for Button

fn clone(&self) -> Button

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Button

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for Button

fn default() -> Button

Returns the “default value” for a type.

impl Message for Button

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for Button

fn eq(&self, other: &Button) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Button