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sequential-workflow-designer

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sequential-workflow-designer

![Sequential Workflow Designer](.github/cover.png)

0.2.3
unpublished
Source
npm

Version published: 2 years ago

Weekly downloads: 2.4K; increased by6.85%

Maintainers: 1

Weekly downloads

Created: last year

Source

Sequential Workflow Designer

Sequential workflow designer with no dependencies for web. It's written in pure TypeScript and uses SVG for rendering. This designer is not associated with any workflow engine. It's full generic. You may create any kind application by this, from graphical programming languages to workflow designers.

Features:

no dependencies,
full generic & configurable,
light/dark themes,
works on modern browsers,
works on mobile.

👀 Examples

🚀 Installation

To use the designer you should add JS/TS files and CSS files to your project.

NPM

Install this package by NPM command:

npm i sequential-workflow-designer

To import the package:

import Designer from 'sequential-workflow-designer';

If you use css-loader or similar, you can add CSS files to your boundle:

import 'sequential-workflow-designer/css/designer.css';
import 'sequential-workflow-designer/css/designer-light.css';
import 'sequential-workflow-designer/css/designer-dark.css';

To create the designer write the below code:

// ...
Designer.create(placeholder, definition, configuration);

CDN

Add the below code to your head section in HTML document.

<head>
...
<link href="https://cdn.jsdelivr.net/npm/sequential-workflow-designer@0.2.3/css/designer.css" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/sequential-workflow-designer@0.2.3/css/designer-light.css" rel="stylesheet">
<link href="https://cdn.jsdelivr.net/npm/sequential-workflow-designer@0.2.3/css/designer-dark.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/sequential-workflow-designer@0.2.3/lib/designer.js"></script>

Call the designer by:

sequentialWorkflowDesigner.create(placeholder, definition, configuration);

🎬 Usage

Check examples directory.

import Designer from 'sequential-workflow-designer';

const placeholder = document.getElementById('placeholder');

const definition = {
  properties: {
    'myProperty': 'my-value',
    // global properties...
  },
  sequence: [
    // root steps...
  ]
};

const configuration = {
  theme: 'light', // optional, default: 'light'
  isReadonly: false, // optional, default: false
  undoStackSize: 10, // optional, default: 0 - disabled, 1+ - enabled

  toolbox: {
    isHidden: false, // optional, default: false

    groups: [
      {
        name: 'Files',
        steps: [
          // steps for the toolbox's group
        ]
      },
      {
        name: 'Notification',
        steps: [
          // steps for the toolbox's group
        ]
      }
    ]
  },

  steps: {
    iconUrlProvider: (componentType, type) => {
      return `icon-${componentType}-${type}.svg`;
    },
    validator: (step) => {
      return /^[a-z]+$/.test(step.name);
    },
    canInsertStep: (step, targetSequence, targetIndex) => {
      return targetSequence.length < 5;
    },
    canMoveStep: (sourceSequence, step, targetSequence, targetIndex) => {
      return !step.properties['isLocked'];
    },
    canDeleteStep: (step, parentSequence) => {
      return step.name !== 'x';
    }
  },

  editors: {
    isHidden: false, // optional, default: false

    globalEditorProvider: (definition) => {
      const container = document.createElement('div');
      // ...
      return container;
    },
    stepEditorProvider: (step) => {
      const container = document.createElement('div');
      // ...
      return container;
    }
  }
};

const designer = Designer.create(placeholder, definition, configuration);
designer.onDefinitionChanged.subscribe((newDefinition) => {
  // ...
});

🚧 Supported Components

Task

Any atomic task.

const taskStep = {
  componentType: 'task',
  id: 'my-unique-id',
  type: 'my-type', // e.g. 'save-file', 'send-email', ...
  name: 'my-name',
  properties: {
    'myProperty': 'my-value',
    // ...
  }
};

Container

This component is mainly designed for for/while/foreach loops. It could be used as a context container too.

const containerStep = {
  componentType: 'container',
  id: 'my-unique-id',
  type: 'my-type', // e.g. 'for', 'while', 'foreach'...
  name: 'my-name',
  properties: {
    'myProperty': 'my-value',
    // ...
  },
  sequence: [
    // steps...
  ]
};

Switch

This component is designed for if/else expressions, but you may use it for switch/case expressions too. This component must have minimum 2 branches.

const switchStep = {
  componentType: 'switch',
  id: 'my-unique-id',
  type: 'my-type', // e.g. 'if', 'switch'...
  name: 'my-name',
  properties: {
    'myProperty': 'my-value',
    // ...
  },
  branches: {
    'true': [
      // steps...
    ],
    'false': [
      // steps...
    ],
    // ...
    'next': [
      // steps...
    ]
  }
};

💡 License

This project is released under the MIT license.

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Package last updated on 24 Nov 2022

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