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132 lines
5.2 KiB
Markdown
132 lines
5.2 KiB
Markdown
# Overview
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This bundle contains a general implementation of forms in Open MCT Web.
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This allows forms to be expressed using a reasonably concise declarative
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syntax, and rendered as Angular templates in a consistent fashion.
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# Usage
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To include a form with a declarative definition, use the `mct-form`
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directive, e.g.:
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<mct-form ng-model="myModel" structure="myStructure" name="myForm">
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</mct-form>
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Using toolbars is similar:
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<mct-toolbar ng-model="myModel" structure="myStructure" name="myToolbar">
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</mct-toolbar>
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The attributes utilized by this form are as follows:
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* `ng-model`: The object which should contain the full form input. Individual
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fields in this model are bound to individual controls; the names used for
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these fields are provided in the form structure (see below).
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* `structure`: The structure of the form; e.g. sections, rows, their names,
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and so forth. The value of this attribute should be an Angular expression.
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* `name`: The name in the containing scope under which to publish form
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"meta-state", e.g. `$valid`, `$dirty`, etc. This is as the behavior of
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`ng-form`. Passed as plain text in the attribute.
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## Form structure
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A form's structure is described as a JavaScript object in the following form:
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{
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"name": ... title to display for the form, as a string ...,
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"sections": [
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{
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"name": ... title to display for the section ...,
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"rows": [
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{
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"name": ... title to display for this row ...,
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"control": ... symbolic key for the control ...,
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"key": ... field name in ng-model ...
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"pattern": ... optional, reg exp to match against ...
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"required": ... optional boolean ...
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"options": [
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"name": ... name to display (e.g. in a select) ...,
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"value": ... value to store in the model ...
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]
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},
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... and other rows ...
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]
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},
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... and other sections ...
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]
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}
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Note that `pattern` may be specified as a string, to simplify storing
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for structures as JSON when necessary. The string should be given in
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a form appropriate to pass to a `RegExp` constructor.
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## Toolbar structure
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A toolbar's structure is described similarly to forms, except that there
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is no notion of rows; instead, there are `items`.
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{
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"name": ... title to display for the form, as a string ...,
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"sections": [
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{
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"name": ... title to display for the section ...,
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"items": [
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{
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"name": ... title to display for this row ...,
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"control": ... symbolic key for the control ...,
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"key": ... field name in ng-model ...
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"pattern": ... optional, reg exp to match against ...
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"required": ... optional boolean ...
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"options": [
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"name": ... name to display (e.g. in a select) ...,
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"value": ... value to store in the model ...
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],
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"disabled": ... true if control should be disabled ...
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"size": ... size of the control (for textfields) ...
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"click": ... function to invoke (for buttons) ...
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"glyph": ... glyph to display (for buttons) ...
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"text": ... text withiin control (for buttons) ...
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},
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... and other rows ...
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]
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},
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... and other sections ...
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]
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}
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Note that `pattern` may be specified as a string, to simplify storing
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for structures as JSON when necessary. The string should be given in
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a form appropriate to pass to a `RegExp` constructor.
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## Adding controls
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Four standard control types are included in the forms bundle:
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* `textfield`: An area to enter plain text.
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* `select`: A drop-down list of options.
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* `checkbox`: A box which may be checked/unchecked.
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* `color`: A color picker.
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* `button`: A button.
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* `datetime`: An input for UTC date/time entry; gives result as a
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UNIX timestamp, in milliseconds since start of 1970, UTC.
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New controls may be added as extensions of the `controls` category.
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Extensions of this category have two properites:
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* `key`: The symbolic name for this control (matched against the
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`control` field in rows of the form structure).
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* `templateUrl`: The URL to the control's Angular template, relative
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to the resources directory of the bundle which exposes the extension.
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Within the template for a control, the following variables will be
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included in scope:
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* `ngModel`: The model where form input will be stored. Notably we
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also need to look at `field` (see below) to determine which field
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in the model should be modified.
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* `ngRequired`: True if input is required.
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* `ngPattern`: The pattern to match against (for text entry.)
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* `options`: The options for this control, as passed from the
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`options` property of an individual row.
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* `field`: Name of the field in `ngModel` which will hold the value
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for this control. |