What is HostConfig?
HostConfig is a cross-platform configuration object that specifies how an Adaptive Card Renderer generates UI.
This allows properties which are platform agnostic to be shared among renderers on different platforms and devices. It also allows tooling to be created which gives you an idea of the look and feel that card would have for a given environment.
See a sample HostConfig.json to get a feeling for its contents.
AdaptiveCardConfig- Toplevel options forAdaptiveCardsActionsConfig- Options forActionsContainerStylesConfig- Controls styling for default and emphasis containersFactSetConfig- Controls the display ofFactSetsFontSizesConfig- Controls font size metrics for different text stylesFontWeightsConfig- Controls font weight metricsForegroundColorsConfig- Controls various font colorsImageSetConfig- Controls howImageSets are displayedImageSizesConfig- ControlsImagesizesInputsConfig- Controls how labels and error messages are displayedLabelConfig- Controls how labels are displayedInputLabelConfig- Controls how required or optional labels are displayed
ErrorMessageConfig- Controls how error messages are displayed
MediaConfig- Controls the display and behavior ofMediaelementsSeparatorConfig- Controls how separators are displayedShowCardConfig- Controls behavior and styling ofAction.ShowCardSpacingsConfig- Controls how elements are to be laid outTextBlockConfig- Parameters controlling the display of text
Card Configuration
AdaptiveCardConfig
Toplevel options for AdaptiveCards
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| allowCustomStyle | boolean |
No, default: true |
Controls whether custom styling is allowed | 1.0 |
| supportsInteractivity | boolean |
No, default: true |
Control whether interactive Actions are allowed to be invoke |
1.0 |
| imageBaseUrl | string |
No | Base URL to be used when loading resources | 1.0 |
| fontFamily | string |
No, default: "Calibri" |
Font face to use when rendering text | 1.0 |
| actions | object |
No | Options for Actions |
1.0 |
| adaptiveCard | object |
No | Toplevel options for AdaptiveCards |
1.0 |
| containerStyles | object |
No | Controls styling for default and emphasis containers | 1.0 |
| imageSizes | object |
No | Controls Image sizes |
1.0 |
| imageSet | object |
No | Controls how ImageSets are displayed |
1.0 |
| factSet | object |
No | Controls the display of FactSets |
1.0 |
| fontSizes | object |
No | Controls font size metrics for different text styles | 1.0 |
| fontWeights | object |
No | Controls font weight metrics | 1.0 |
| spacing | object |
No | Controls how elements are to be laid out | 1.0 |
| separator | object |
No | Controls how separators are displayed | 1.0 |
| media | object |
No | Controls the display and behavior of Media elements |
1.1 |
ActionsConfig
Options for Actions
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| actionsOrientation | string |
No, default: "horizontal" |
Controls how buttons are laid out | 1.0 |
| actionAlignment | string |
No, default: "stretch" |
Control layout of buttons | 1.0 |
| buttonSpacing | integer |
No, default: 10 |
Controls how much spacing to use between buttons | 1.0 |
| maxActions | integer |
No, default: 5 |
Controls how many actions are allowed in total | 1.0 |
| spacing | string |
No, default: "default" |
Controls overall spacing of action element | 1.0 |
| showCard | object |
No | Controls behavior and styling of Action.ShowCard |
1.0 |
| iconPlacement | string |
No, default: "aboveTitle" |
Controls where to place the action icon | 1.0 |
| iconSize | integer |
No, default: 30 |
Controls size of action icon | 1.0 |
ContainerStylesConfig
Controls styling for default and emphasis containers
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| default | object |
No | Default container style | 1.0 |
| emphasis | object |
No | Container style to use for emphasis | 1.0 |
FactSetConfig
Controls the display of FactSets
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| title | object |
No, default: {"weight":"bolder","size":"default","color":"default","isSubtle":false,"wrap":true,"maxWidth":150} |
Parameters controlling the display of text | 1.0 |
| value | object |
No, default: {"weight":"default","size":"default","color":"default","isSubtle":false,"wrap":true,"maxWidth":0} |
Parameters controlling the display of text | 1.0 |
| spacing | integer |
No, default: 10 |
1.0 |
FontSizesConfig
Controls font size metrics for different text styles
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| small | integer |
No, default: 10 |
Small font size | 1.0 |
| default | integer |
No, default: 12 |
Default font size | 1.0 |
| medium | integer |
No, default: 14 |
Medium font size | 1.0 |
| large | integer |
No, default: 17 |
Large font size | 1.0 |
| extraLarge | integer |
No, default: 20 |
Extra large font size | 1.0 |
FontWeightsConfig
Controls font weight metrics
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| lighter | integer |
No, default: 200 |
1.0 | |
| default | integer |
No, default: 400 |
1.0 | |
| bolder | integer |
No, default: 800 |
1.0 |
ForegroundColorsConfig
Controls various font colors
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| default | object |
No, default: {"default":"#FF000000","subtle":"#B2000000"} |
1.0 | |
| accent | object |
No, default: {"default":"#FF0000FF","subtle":"#B20000FF"} |
1.0 | |
| dark | object |
No, default: {"default":"#FF101010","subtle":"#B2101010"} |
1.0 | |
| light | object |
No, default: {"default":"#FFFFFFFF","subtle":"#B2FFFFFF"} |
1.0 | |
| good | object |
No, default: {"default":"#FF008000","subtle":"#B2008000"} |
1.0 | |
| warning | object |
No, default: {"default":"#FFFFD700","subtle":"#B2FFD700"} |
1.0 | |
| attention | object |
No, default: {"default":"#FF8B0000","subtle":"#B28B0000"} |
1.0 |
ImageSetConfig
Controls how ImageSets are displayed
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| imageSize | string |
No, default: "auto" |
Controls individual image sizing | 1.0 |
| maxImageHeight | integer |
No, default: 100 |
Constrain image height to this value | 1.0 |
ImageSizesConfig
Controls Image sizes
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| small | integer |
No, default: 80 |
Small image size value | 1.0 |
| medium | integer |
No, default: 120 |
Medium image size value | 1.0 |
| large | integer |
No, default: 180 |
Large image size value | 1.0 |
InputsConfig
Controls how labels and error messages are displayed
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| label | LabelConfig |
No | Controls how labels are displayed | 1.3 |
| errorMessage | ErrorMessageConfig |
No | Controls how error messages are displayed | 1.3 |
LabelConfig
Controls how labels are displayed
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| requiredInputs | InputLabelConfig |
No | Controls how labels for required inputs are displayed | 1.3 |
| optionalInputs | InputLabelConfig |
No | Controls how labels for optional inputs are displayed | 1.3 |
| spacing | string |
No, default: "default" |
Spacing between the label and the input | 1.3 |
InputLabelConfig
Controls how required or optional labels are displayed
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| color | string |
No, default: "default" |
Font color of the label (the suffix is always rendered in attention color) |
1.3 |
| isSubtle | bool |
No, default: false |
Defines whether to use the subtle foreground color |
1.3 |
| size | string |
No, default: "default" |
Font size of the label to be displayed | 1.3 |
| suffix | string |
No, default: "*" |
Suffix to be displayed at the end of the label for required inputs. If none is defined, an asterisk * is appended to the label |
1.3 |
| weight | string |
No, default: "default" |
Font weight of the label | 1.3 |
ErrorMessageConfig
Controls how error messages are displayed. Error messages are always displayed with the attention color.
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| spacing | string |
No, default: "default" |
Spacing between the input and the error message | 1.3 |
| size | string |
No, default: "default" |
Font size of the error message | 1.3 |
| weight | string |
No, default: "default" |
Font weight of the error message | 1.3 |
MediaConfig
Controls the display and behavior of Media elements
Introduced in version 1.1
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| defaultPoster | string |
No | URI to image to display when play button hasn't been invoked | 1.1 |
| playButton | string |
No | Image to display as play button | 1.1 |
| allowInlinePlayback | boolean |
No, default: true |
Whether to display media inline or invoke externally | 1.1 |
SeparatorConfig
Controls how separators are displayed
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| lineThickness | integer |
No, default: 1 |
Thickness of separator line | 1.0 |
| lineColor | string,null |
No, default: #B2000000 |
Color to use when drawing separator line | 1.0 |
ShowCardConfig
Controls behavior and styling of Action.ShowCard
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| actionMode | string |
No, default: "inline" |
Controls how the card is displayed | 1.0 |
| style | object |
No, default: emphasis |
Controls styling of a container | 1.0 |
| inlineTopMargin | integer |
No, default: 16 |
Amount of margin to use when displaying the card | 1.0 |
SpacingsConfig
Controls how elements are to be laid out
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| small | integer |
No, default: 3 |
Small spacing value | 1.0 |
| default | integer |
No, default: 8 |
Default spacing value | 1.0 |
| medium | integer |
No, default: 20 |
Medium spacing value | 1.0 |
| large | integer |
No, default: 30 |
Large spacing value | 1.0 |
| extraLarge | integer |
No, default: 40 |
Extra large spacing value | 1.0 |
| padding | integer |
No, default: 20 |
Padding value | 1.0 |
TextBlockConfig
Parameters controlling the display of text
| Property | Type | Required | Description | Version |
|---|---|---|---|---|
| size | string |
No, default: "default" |
Font size to use when a card doesn't specify | 1.0 |
| weight | string |
No, default: "normal" |
Font weight to use when a card doesn't specify | 1.0 |
| color | string |
No, default: "default" |
Font color to use when a card doesn't specify | 1.0 |
| isSubtle | boolean |
No, default: false |
Should text be subtle if a card doesn't specify | 1.0 |
| wrap | boolean |
No, default: true |
Should text wrap if a card doesn't specify | 1.0 |
| maxWidth | integer |
No, default: 0 |
Maximum width to use if a card doesn't specify | 1.0 |