alfresco-ng2-components/ng2-components/ng2-activiti-form

APS Form Component

• Library Contents
  • Components
  • Services
• Prerequisites
• Install
• ActivitiForm Component
  • Properties
  • Advanced properties
  • Events
  • Controlling outcome execution behaviour
• Activiti Content Component
  • Properties
  • Events
• ADF Form List Component
  • Properties
• FormService Service
  • Events
  • Methods
• Common scenarios
  • Changing field value based on another field
  • Listen all form Events
• See also
• Build from sources
• NPM scripts
• Demo
• License

See it live: Form Quickstart

Library Contents

Components

• ActivitiForm
• ActivitiStartForm

Services

• FormService
• ActivitiAlfrescoContentService
• EcmModelService
• FormRenderingService
• NodeService
• WidgetVisibilityService

Prerequisites

Before you start using this development framework, make sure you have installed all required software and done all the necessary configuration, see this page.

If you plan to use this component with projects generated by Angular CLI, you can read more in Using ADF with Angular CLI

Install

npm install ng2-activiti-form

ActivitiForm Component

The component shows a Form from Activiti

<adf-form 
    [taskId]="taskId">
</adf-form>

Display form instance by task id:

<adf-form 
    [taskId]="selectedTask?.id">
</adf-form>

For an existing Task both form and values will be fetched and displayed.

Display form definition by form id:

<adf-form 
    [formId]="selectedFormDefinition?.id"
    [data]="customData">
</adf-form>

Only form definition will be fetched.

Display form definition by form name:

<adf-form 
    [formName]="selectedFormDefinition?.name"
    [data]="customData">
</adf-form>

Display form definition by ECM nodeId:

In this case the metadata of the node are showed in an activiti Form. If there is no form definied in activiti for the type of the node, a new form will be automaticaly created in Activiti.

<adf-form 
    [nodeId]="'e280be3a-6584-45a1-8bb5-89bfe070262e'">
</adf-form>

Display form definition by form name, and store the form field as metadata:

The param nameNode is optional.

<adf-form 
    [formName]="'activitiForms:patientFolder'"
    [saveMetadata]="true"
    [path]="'/Sites/swsdp/documentLibrary'"
    [nameNode]="'test'">
</adf-form>

Display form definition by ECM nodeId:

In this case the metadata of the node are shown in an activiti Form, and store the form field as metadata. The param nameNode is optional.

<adf-form 
    [nodeId]="'e280be3a-6584-45a1-8bb5-89bfe070262e'"
    [saveMetadata]="true"
    [path]="'/Sites/swsdp/documentLibrary'"
    [nameNode]="'test'">
</adf-form>

Properties

The recommended set of properties can be found in the following table:

Name	Type	Default	Description
taskId	string		Task id to fetch corresponding form and values.
formId	string		The id of the form definition to load and display with custom values.
formName	string		Name of the form definition to load and display with custom values.
data	FormValues		Custom form values map to be used with the rendered form.
showTitle	boolean	true	Toggle rendering of the form title.
showCompleteButton	boolean	true	Toggle rendering of the Complete outcome button.
disableCompleteButton	boolean	false	The Complete outcome button is shown but it will be disabled.
showSaveButton	boolean	true	Toggle rendering of the Save outcome button.
readOnly	boolean	false	Toggle readonly state of the form. Enforces all form widgets render readonly if enabled.
showRefreshButton	boolean	true	Toggle rendering of the Refresh button.
showValidationIcon	boolean	true	Toggle rendering of the validation icon next form title.
saveMetadata	boolean	false	Store the value of the form as metadata.
path	string		Path of the folder where to store the metadata.
nameNode	string	true	Name to assign to the new node where the metadata are stored.

Advanced properties

The following properties are for complex customisation purposes:

Name	Type	Default	Description
form	FormModel		Underlying form model instance.
showDebugButton	boolean	false	Toggle debug options.
debugMode	boolean	false	Toggle debug mode, allows displaying additional data for development and debugging purposes.

Events

Name	Return Type	Description
formLoaded	FormModel	Invoked when form is loaded or reloaded.
formSaved	FormModel	Invoked when form is submitted with Save or custom outcomes.
formCompleted	FormModel	Invoked when form is submitted with Complete outcome.
formDataRefreshed	FormModel	Invoked when form values are refreshed due to a data property change
executeOutcome	FormOutcomeEvent	Invoked when any outcome is executed, default behaviour can be prevented via event.preventDefault()
onError	any	Invoked at any error

All form* events receive an instance of the FormModel as event argument for ease of development:

MyView.component.html

<adf-form 
    [taskId]="selectedTask?.id"
    (formSaved)="onFormSaved($event)">
</adf-form>

MyView.component.ts

onFormSaved(form: FormModel) {
    console.log(form);
}

Controlling outcome execution behaviour

If absolutely needed it is possible taking full control over form outcome execution by means of executeOutcome event. This event is fired upon each outcome execution, both system and custom ones.

You can prevent default behaviour by calling event.preventDefault(). This allows for example having custom form validation scenarios and/or additional validation summary presentation.

Alternatively you may want just running additional code on outcome execution without suppressing default one.

MyView.component.html

<adf-form 
    [taskId]="selectedTask?.id"
    executeOutcome="validateForm($event)">
</adf-form>

MyView.component.ts

import { FormOutcomeEvent } from 'ng2-activiti-form';

export class MyView {

    validateForm(event: FormOutcomeEvent) {
        let outcome = event.outcome;
        
        // you can also get additional properties of outcomes 
        // if you defined them within outcome definition
        
        if (outcome) {
            let form = outcome.form;
            if (form) {
                // check/update the form here
                event.preventDefault();
            }
        }
    }
    
}

There are two additional functions that can be of a great value when controlling outcomes:

• saveTaskForm() - saves current form
• completeTaskForm(outcome?: string) - save and complete form with a given outcome name

Please note that if event.preventDefault() is not called then default outcome behaviour will also be executed after your custom code.

Activiti Content Component

The component shows the content preview.

<adf-content 
    [contentId]="'1001'">
</adf-content>

Properties

The recommended set of properties can be found in the following table:

Name	Type	Default	Description
contentId	string		The content id to show.

Events

Name	Description
contentClick	Invoked when the content is clicked.

ADF Form List Component

The component shows the activiti forms as a list.

<adf-form-list
[forms]="[{ name: 'My Name', lastUpdatedByFullName: 'My User Name', lastUpdated: '2017-06-01'}]">
</adf-form-list>

Properties

The recommended set of properties can be found in the following table:

Name	Type	Default	Description
forms	any		The array that contains the information to show inside the list.

FormService Service

import { FormService, FormEvent, FormFieldEvent } from 'ng2-activiti-form';

@Component(...)
class MyComponent {

    constructor(formService: FormService) {

        formService.formLoaded.subscribe(
            (e: FormEvent) => {
                console.log(`Form loaded: ${e.form.id}`);
            }
        );

        formService.formFieldValueChanged.subscribe(
            (e: FormFieldEvent) => {
                console.log(`Field value changed. Form: ${e.form.id}, Field: ${e.field.id}, Value: ${e.field.value}`);
            }
        );

    }

}

Events

Name	Args Type	Description
formLoaded	FormEvent	Raised when form has been loaded or reloaded
formFieldValueChanged	FormFieldEvent	Raised when input values change
taskCompleted	FormEvent	Raised when a task is completed successfully
taskCompletedError	FormErrorEvent	Raised when a task is completed unsuccessfully
taskSaved	FormEvent	Raised when a task is saved successfully
taskSavedError	FormErrorEvent	Raised when a task is saved unsuccessfully
executeOutcome	FormOutcomeEvent	Raised when a form outcome is executed
formEvents	Event	You can subscribe to this event to listen : ( click, blur, change, focus, focusin, focusout, input, invalid, select) of any elements in the form , see doc below

Methods

Name	Params	Returns	Description
createFormFromANode	(formName: string)	Observable<any>	Create a Form with a fields for each metadata properties
createForm	(formName: string)	Observable<any>	Create a Form
addFieldsToAForm	(formId: string, formModel: FormDefinitionModel)	Observable<any>	Add Fileds to A form
searchFrom	(name: string)	Observable<any>	Search For A Form by name
getForms	n/a	Observable<any>	Get All the forms
getProcessDefinitions	n/a	Observable<any>	Get Process Definitions
getTasks	n/a	Observable<any>	Get All the Tasks
getTask	(taskId: string)	Observable<any>	Get Task
saveTaskForm	(taskId: string, formValues: FormValues)	Observable<any>	Save Task Form
completeTaskForm	(taskId: string, formValues: FormValues, outcome?: string)	Observable<any>	Complete Task Form
getTaskForm	(taskId: string)	Observable<any>	Get Form related to a taskId
getFormDefinitionById	(formId: string)	Observable<any>	Get Form Definition
getFormDefinitionByName	(name: string)	Observable<any>	Returns form definition by a given name.
getStartFormInstance	(processId: string)	Observable<any>	Get start form instance for a given processId
getStartFormDefinition	(processId: string)	Observable<any>	Get start form definition for a given process
createTemporaryRawRelatedContent	(file: any)	Observable<any>	Save File
getRestFieldValues	(taskId: string, field: string)	Observable<any>
getRestFieldValuesByProcessId	(processDefinitionId: string, field: string)	Observable<any>
getRestFieldValuesColumnByProcessId	(processDefinitionId: string, field: string, column?: string)	Observable<any>
getRestFieldValuesColumn	(taskId: string, field: string, column?: string)	Observable<any>
getWorkflowGroups\	(filter: string, groupId?: string)	Observable<GroupModel[]>
getWorkflowUsers\	(filter: string, groupId?: string)	Observable<GroupUserModel[]>

Common scenarios

Changing field value based on another field

Create a simple Form with a dropdown widget (id: type), and a multiline text (id: description).

formService.formFieldValueChanged.subscribe((e: FormFieldEvent) => {
    if (e.field.id === 'type') {
        const fields: FormFieldModel[] = e.form.getFormFields();
        const description = fields.find(f => f.id === 'description');
        if (description != null) {
            console.log(description);
            description.value = 'Type set to ' + e.field.value;
        }
    }
});

You subscribe to the formFieldValueChanged event and check whether event is raised for the type widget, then you search for a description widget and assign its value to some simple text.

The result should be as following:

Listen all form Events

If you want to listen all the events fired in the form you can subscribe to this Subject :

formService.formEvents.subscribe((event: Event) => {
  console.log('Event fired:' + event.type);
  console.log('Event Target:' + event.target);
});

See also

• Form Stencils with Angular 2
• Form Extensibility and Customisation.

Build from sources

You can build the component from sources with the following commands:

npm install
npm run build

The build task rebuilds all the code, runs tslint, license checks and other quality check tools before performing unit testing.

NPM scripts

Command	Description
npm run build	Build component
npm run test	Run unit tests in the console
npm run test-browser	Run unit tests in the browser
npm run coverage	Run unit tests and display code coverage report

Demo

Please check the demo folder for a demo project

cd demo
npm install
npm start

License

Apache Version 2.0