codex.editor.image

Image Tool

Image Block for the CodeX Editor.

Features

• Uploading file from the device
• Pasting copied content from the web
• Pasting images by drag-n-drop
• Pasting files and screenshots from Clipboard
• Allows to add border, background
• Allows to stretch image to the container's full-width

Note This Tool requires server-side implementation for file uploading. See backend response format for more details.

Installation

Install via NPM

Get the package

npm i --save-dev codex.editor.image

Include module at your application

const ImageTool = require('codex.editor.image');

Download to your project's source dir

1. Upload folder dist from repository
2. Add dist/bundle.js file to your page.

Load from CDN

You can load specific version of package from jsDelivr CDN.

https://cdn.jsdelivr.net/npm/codex.editor.image@1.0.0

Then require this script on page with CodeX Editor through the <script src=""></script> tag.

Usage

Add a new Tool to the tools property of the CodeX Editor initial config.

var editor = CodexEditor({
  ...

  tools: {
    ...
    image: {
      class: ImageTool,
      config: {
        endpoints: {
          byFile: 'http://localhost:8008/uploadFile', // Your backend file uploader endpoint
          byUrl: 'http://localhost:8008/fetchUrl', // Your endpoint that provides uploading by Url
        }
      }
    }
  }

  ...
});

Config Params

Image Tool supports these configuration parameters:

Field	Type	Description
endpoints	{byFile: string, byUrl: string}	Required Endpoints for file uploading. Contains 2 fields: byFile - for file uploading byUrl - for uploading by URL
field	string	(default: image) Name of uploaded image field in POST request
types	string	(default: image/*) Mime-types of files that can be accepted with file selection.
additionalRequestData	object	Object with any data you want to send with uploading requests
additionalRequestHeaders	object	Object with any custom headers which will be added to request. See example
captionPlaceholder	string	(default: Caption) Placeholder for Caption input
buttonContent	string	Allows to override HTML content of «Select file» button

Tool's settings

1. Add border

2. Stretch to full-width

3. Add background

Output data

This Tool returns data with following format

Field	Type	Description
file	object	Uploaded file data. Any data got from backend uploader. Always contain the url property
caption	string	image's caption
withBorder	boolean	add border to image
withBackground	boolean	need to add background
stretched	boolean	stretch image to screen's width

{
    "type" : "image",
    "data" : {
        "file": {
            "url" : "https://www.tesla.com/tesla_theme/assets/img/_vehicle_redesign/roadster_and_semi/roadster/hero.jpg"
        },
        "caption" : "Roadster // tesla.com",
        "withBorder" : false,
        "withBackground" : false,
        "stretched" : true
    }
}

Backend response format

This Tool works by one of the following schemes:

1. Uploading files from the device
2. Uploading by URL (handle image-like URL's pasting)
3. Uploading by drag-n-drop file
4. Uploading by pasting from Clipboard

Uploading files from device

Scenario:

1. User select file from the device
2. Tool sends it to your backend (on config.endpoint.byFile route)
3. Your backend should save file and return file data with JSON at specified format.
4. Image tool shows saved image and stores server answer

So, you can implement backend for file saving by your own way. It is a specific and trivial task depending on your environment and stack.

Response of your uploader should cover following format:

{
    "success" : 1,
    "file": {
        "url" : "https://www.tesla.com/tesla_theme/assets/img/_vehicle_redesign/roadster_and_semi/roadster/hero.jpg",
        // ... and any additional fields you want
    }
}

success - uploading status. 1 for successful, 0 for failed

file - uploaded file data. Must contain an url field with full public path to the uploaded image. Also, can contain any additional fields you want to store. For example, width, height, id etc. All additional fields will be saved at the file object of output data.

Uploading by pasted URL

Scenario:

1. User pastes an URL of the image file to the Editor
2. Editor pass pasted string to the Image Tool
3. Tool sends it to your backend (on config.endpoint.byUrl route) via 'url' POST-parameter
4. Your backend should accept URL, download and save the original file by passed URL and return file data with JSON at specified format.
5. Image tool shows saved image and stores server answer

Response of your uploader should be at the same format as described at «Uploading files from device» section

Uploading by drag-n-drop or from Clipboard

Your backend will accept file as FormData object in field name, specified by config.field (by default, «image»). You should save it and return the same response format as described above.