Calendar

A calendar panel field that can be used to select a date and/or display events.

Its value is sent as a command to the server on a submit action or when it changes, if Auto Send it true.

Attributes

Common

ID

Sets the object's ID.

The ID identifies the object and is used to reference it in UISet actions, allowing to change its attributes dynamically.

The ID is not unique, it can be shared among multiple objects to quickly change a common attribute.

IDs can't be changed with a UISet action, but they can have a Value Binding assigned to them. Value Bindings on IDs allow an object to be dinamically attached to a set of attribute values.

E.g. the following Value Binding switches the ID of the object between mybutton1 and mybutton2 based on the value of the UISet button.address:

Value binding:

="mybutton" + ui('button', 'address')

UISet:

UISet('button', 'address', '1') switches the ID to mybutton1

UISet('button', 'address', '2') switches the ID to mybutton2

Position and Size

Position

Sets the object's position.

Attribute Values

Value	Description	Example
x<left>y<top>	Specify left/top coordinates in pixels.	x10y20

This attribute is available when parent's layout is neither "flex" nor "grid".

When parent's layout is neither "flex" nor "grid", this attribute defaults to x0y0.

Flex Grow

Specifies if the objects should grow to fill the available space.

Attribute Values

Value	Description
false	Default value. Objects do not grow to fill the available space.
true	Objects expand to fill the available space.

This attribute is available when parent's layout is "flex".

The default value is: false.

Flex Shrink

Specifies if the objects should shrink to fit the available space.

Attribute Values

Value	Description
false	Default value. Objects do not shrink to fit the available space.
true	Objects shrink to fit the available space.

This attribute is available when parent's layout is "flex".

The default value is: false.

Column

Specifies the starting column of the object inside a grid container.

Minimum value is 1.

Attribute Values

Value	Description
<int>	Column index starting from 1.

This attribute is available when parent's layout is "grid".

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Column Span

Specifies how many grid columns the object spans.

Minimum value is 1.

Attribute Values

Value	Description
<int>	Column span starting from 1.

This attribute is available when parent's layout is "grid".

When parent's layout is "grid", this attribute defaults to 1.

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Row

Specifies the starting row of the object inside a grid container.

Minimum value is 1.

Attribute Values

Value	Description
[empty]	Auto placement by the grid.
<int>	Row index starting from 1.

This attribute is available when parent's layout is "grid".

When parent's layout is "grid", this attribute defaults to auto.

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Row Span

Specifies how many grid rows the object spans.

Minimum value is 1.

Attribute Values

Value	Description
<int>	Row span starting from 1.

This attribute is available when parent's layout is "grid".

When parent's layout is "grid", this attribute defaults to 1.

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Width

Sets the object's width in pixels.

Minimum value is 180.

Height

Sets the object's height in pixels.

Minimum value is 250.

Action

Action

Specifies the action to perform when the date is clicked.

Attribute Values

Value	Description
none	No action.
select	Default value. Selects the item. The selection is sent as a command on a submit action or when it changes, if Auto Send it true.
command	Sends the date and sends a command with the specified name and the date as param, formatted as specified in Data Format.

The default value is: select.

Field

Name

Specifies the name of the field, used to send a command to the server, along with the field's value as a parameter.

If the name starts with $, then the server will automatically set a variable with the same name as the command, containing the command's parameter.

Attribute Values

Value	Description	Example
<string>	Command name.
$[variable name]	A command name that sets a variable.	$myvar
$[variable name]!	A command name that sets a persistent variable.	$myvar!

By default, this attribute uses the id attribute.

Value

Specifies the value of the field. The format is specified by the Data Format attribute.

Supported values:

• A date formatted as specified by Data Format
• now
• Date math expressions in the form <anchor>((+|-)<integer><unit>)*( /<unit> )?

<anchor> can be now or an absolute date. To apply math to an absolute date, use value||math. Supported units are y=year, M=month, w=week, d=day. /unit rounds down to the start of that unit.

Examples: now/d, now/w, now/M, now/y, now+1M/M-1d, 2026-03-26||/M.

Attribute Values

Value	Description	Example
<string>	Date value formatted as specified in Data Format.	2020-12-31
now	Current date of the browser.
[+|-][y|M|w|d]	Relative date, where y=year, M=month, w=week, d=day.	+1d
<string>	Date math anchored to an absolute date.	`2026-03-26

Auto Send

Specifies whether the value is automatically sent on change or is sent through a button with submit action.

Attribute Values

Value	Description
auto	Default value. The value is sent only if there's no buttons with submit action in the same or a parent container.
true	The value is sent automatically on change.
false	The value is not automatically sent.

The default value is: auto.

Required

Specifies if the field is required when submitting multiple fields with a submit button. If true, an empty/null value is considered not valid. When there are non valid fields, the submit button focuses the first non valid field instead of sending data to the server, to prompt the user to fill in the required fields.

Attribute Values

Value	Description
false	Default value. The field is not required.
true	The field is required.

The default value is: false.

From Date

Specifies the earliest selectable date. Dates prior to this will not be selectable.

Uses the same syntax as Value.

Attribute Values

Value	Description	Example
<string>	Minimum selectable date.	2020-12-31
<string>	Minimum selectable date using the same syntax as Value.	now-1w

Default behavior:

• When dataformat is "extended", this attribute defaults to 1981-01-01.
• When dataformat is "basic", this attribute defaults to 19810101.
• When dataformat is "timestamp", this attribute defaults to 0.
• Otherwise, this attribute defaults to 1981-01-01.

To Date

Specifies the latest selectable date. Selection of dates beyond this point is not permitted.

Uses the same syntax as Value.

Attribute Values

Value	Description	Example
<string>	Maximum selectable date.	2028-12-31
<string>	Maximum selectable date using the same syntax as Value.	now+1w

Default behavior:

• When dataformat is "extended", this attribute defaults to 2028-12-31.
• When dataformat is "basic", this attribute defaults to 20281231.
• When dataformat is "timestamp", this attribute defaults to 4102444800.
• Otherwise, this attribute defaults to 2028-12-31.

Data Format

Specifies the data format, which determines how the value is parsed when received (through a UISet) or sent.

Attribute Values

Value	Description
extended	Default value. YYYY-MM-DD ISO 8601 Extended Format.
basic	YYYYMMDD ISO 8601 Basic Format.
timestamp	Unix Timestamp: Seconds since the Unix Epoch (January 1, 1970 00:00:00 GMT).

The default value is: extended.

Locale

Specifies the locale to be used, or a list of locales.

If a list is provided, the runtime picks the best one available.

By default, this attribute uses the project's locale attribute.

Extra

Value Options

Specifies additional value options, which appear as buttons.

Attribute Values

Value	Description	Example
<JSON array>	Array of JSON options, each with value and label properties.	[{"value":"+1w","label":"Next Week"}]

The default value is: [{"value":"*", "label":"- -"},{"value":"now", "label":"$today;"}].

Events Data Mode

Specifies the mode of the events data.

Attribute Values

Value	Description
items	Default value. Events data is set with the UI attribute Event Items.
datasource	Events data is set by a linked datasource.

The default value is: items.

Event Items

Specifies calendar events, which appear under the dates.

Attribute Values

Value	Description	Example
<JSON array>	Array of JSON events.	[{"date":"2024-12-24","color":"error","label":"Holiday"}]

This attribute is available when eventsdatamode is "items".

Events Datasource ID

Specifies the ID of the datasource.

The datasource must have the following columns (see event object):

• <key>: date value
• color: event color
• label: event label

This attribute is available when eventsdatamode is "datasource".

Panel

Panel

Shows a panel that frames the object. Its style can be modified.

Attribute Values

Value	Description
true	Default value. Shows the panel.
false	Hides the panel.

The default value is: true.

Panel Color

Specifies the panel color.

Attribute Values

Value	Description
default	Default value. Default color.
primary	Primary color, used to highlight important areas.
warning	Warning color, used to highlight warning areas.
success	Success color, used to highlight success areas.
error	Error color, used to highlight error areas.
red,blue,yellow,green,yellow,purple,orange,green	Palette colors.
custom	Custom color, defined in the "Custom Color" attribute.

This attribute is available when panel is "true".

The default value is: default.

Panel Custom Color

Specifies the panel custom color.

Attribute Values

Value	Description	Example
<html color>	Color in any html accepted format.	#ff0000

This attribute is available when panelstyle is "custom" or panelstyle is "glass" or panelcolor is "custom".

Typography

Font Family

Specifies the font family.

The default value is: default.

Font Size

Specifies the font size in pixels or percentage (relative to the project's font size).

Attribute Values

Value	Description	Example
<integer>	Font size in pixels.
<percentage>%	Relative font size in percentage.	90%

The default value is: 14.

Font Color

Specifies the text CSS color.

Attribute Values

Value	Description	Example
<html color>	Color in any html accepted format.	#ff0000

Font Weight

Specifies the weight of the font.

Attribute Values

Value	Description
normal	Default value. Normal.
bold	Bold.
bolder	Bolder.
lighter	Lighter.

The default value is: normal.

Italic

Show the text in italics.

Attribute Values

Value	Description
false	Default value. Normal.
true	Italics.

The default value is: false.

Small Caps

Sets the font to small caps.

Attribute Values

Value	Description
false	Default value. Normal.
true	Small caps.

The default value is: false.

Decoration

Specifies the text decoration.

Attribute Values

Value	Description
none	Default value. No decoration.
underline	Underline.
overline	Overline.
line-through	Line through.

The default value is: none.

Line Height

Sets the line height of the text.

Attribute Values

Value	Description
<float>	Specify the line height as a multiple of the font size.

The default value is: 1.0.

View

Visible

Sets the object's visibility.

Attribute Values

Value	Description
true	Default value. Visible.
false	Hidden.

The default value is: true.

Enabled

Specifies if the object is enabled or disabled. A disabled object appears as grayed out and can't be interacted with.

Attribute Values

Value	Description
true	Default value. Enabled.
false	Disabled.

The default value is: true.

Blink

Blinks the object at the specified speed.

Attribute Values

Value	Description
false	Default value. Not blinking.
slow	Blinks slowly.
fast	Blinks fast.

The default value is: false.

Transition

Specifies the transition effect when the object is shown or hidden.

Attribute Values

Value	Description
none	Default value. No transition.
fade	Fade in/out.
fade-left	Slide from left and fade in/out.
fade-right	Slide from right and fade in/out.
fade-up	Slide from top and fade in/out.
fade-down	Slide from bottom and fade in/out.
slide-left	Slide from left.
slide-right	Slide from right.
slide-up	Slide from top.
slide-down	Slide from bottom.
zoom-in	Zoom in.
zoom-out	Zoom out.
3d-flip-left	3D flip from left.
3d-flip-right	3D flip from right.

The default value is: none.

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Transition Duration

Specifies the transition duration in milliseconds.

Attribute Values

Value	Description
<integer>	Duration in milliseconds.

This attribute is available when transition is not "none".

When transition is not "none", this attribute defaults to 300.

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Transition Delay

Specifies the transition delay in milliseconds.

Attribute Values

Value	Description
<integer>	Delay in milliseconds.

This attribute is available when transition is not "none".

When transition is not "none", this attribute defaults to 0.

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Opacity

Sets the object's opacity. Opacity is the degree to which content behind an object is hidden.

Attribute Values

Value	Description
0	The object is fully transparent.
>0.0, <1.0	The object is translucent (content behind the element can be seen).
1.0	Default value. The object is fully opaque.

The default value is: 1.0.

Rotation

Specifies the degrees by which the object is rotated. A positive number rotates it clockwise, while a negative value rotates it counter-clockwise.

The default value is: 0.

CSS Class

Specifies a CSS Class that applies to the object, useful to customize its appearance. Custom CSS Classes are specified within the custom.css file.

Margin

Specifies the margin of the object. The margin is the space outside the object's border.

Attribute Values

Value	Description	Example
<int>	Specify the margin in pixels for all sides of the object.
<top> <right> <bottom> <left>	Specify the margin in pixels for each side of the object.	10 20 30 40

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

View Scale

Specifies the scale of the object. The scale is the ratio between the object's size and the size of the view it is contained in.

Attribute Values

Value	Description
<float>	Specify the scale for both width and height of the object.

The default value is: 1.0.

note

This attribute is experimental. It might not work properly and it might be modified or removed in a future release.

Meta

Comment

Specifies a comment, visible only in the Project Editor. It can be used to add a note or a tag to the object. The filter in the object's SELECT panel applies to the comment as well.

note

This attribute is static. Its value can't be changed dynamically with a uiSet command or with a value binding.

Exclude

Excludes the object from the UI. Useful to temporarily hide an object without deleting it. Different from the "Visible" attribute, which hides the object in the UI but keeps it in the project, allowing it to be shown again with a UISet.

Attribute Values

Value	Description
false	Default value. Object is included in the UI.
true	Object is excluded from the UI.

The default value is: false.

note

This attribute is static. Its value can't be changed dynamically with a uiSet command or with a value binding.