Annotations

Box Annotations allow developers to provide collaboration capabilities right from within the embedded Box preview in their application. Box Annotations fit a wide range of use cases and can be used to draw the previewer's attention and/or provide feedback on specific parts of a document or images.

Box Content Preview currently supports four annotation types - highlight comment, highlight only, draw, and point annotation. Box Annotations are today supported on documents and image previews only. You can find the full list of supported file types for Box Content Preview here.

Browser support

Learn more about browser support for Box UI element.

Usage

Box Annotations can be used by pulling from our NPM package.

Initialization

/* global BoxAnnotations */
const boxAnnotations = new BoxAnnotations();
const annotatorConf = boxAnnotations.determineAnnotator(
  options,
  disabledAnnotationTypes
);

// Construct and init annotator
const annotator = new annotatorConf.CONSTRUCTOR(options);

annotator.init(scale);

Where disabledAnnotationTypes is a string of valid annotation types to disable. See below for more details on viewer specific annotation configurations.

Authentication

The UI Elements are designed in an authentication agnostic way so whether you are using UI Elements for users who have Box accounts (Managed Users) or non-Box accounts (App Users), UI Elements should work out of the box. The reason for this is that UI Elements only expect a "token" to be passed in for authentication, and Box provides two different ways to generate tokens - OAuth and JWT.

If your application requires the end user to only be able to access a subset of the Annotations functionality, you can use Downscoping to appropriately downscope your Access Token to a resulting token that has the desired set of permissions, and can thus, be securely passed to the end user client initializing Annotations.

Below are a set of new Annotation-specific scopes to go alongside Downscoping. These allow developers to enable/disable functionality on Box Annotations by configuring the appropriate scopes on the downscoped token. To learn more, see Dedicated scopes for the Box UI Elements.

Parameters & Options

const annotator = new annotatorConf.CONSTRUCTOR({
  annotator,
  apiHost,
  token,
  container,
  file: {
    id,
    file_version: {
      id
    },
    permissions
  },
  isMobile,
  hasTouch,
  locale,
  modeButtons: {
    // Annotation mode buttons, i.e. point, draw, etc
    point: {
      // Accessibilty message for the point annotation mode button
      title: "Point annotation mode",
      // CSS selector for the point annotation mode button
      selector: ".bp-btn-annotate-point"
    }
  }
});

Base Scope

Feature Scopes

Sample Scenarios

Enabling/Disabling Annotations and Annotation Types

Annotation types can be selectively turned off through preview options. Viewer options override global showAnnotations value, for that viewer. See Box Content Preview for more details on how to set up the Preview instances that are used with Box Annotations here.

preview.show(..., {
  showAnnotations: Boolean
});

Combined with the following:

preview.show(..., {
    viewers: {
        VIEWER_NAME: {
            annotations: {
                enabled: Boolean,
                enabledTypes: String[] | null
            }
        }
    }
});

This turns the annotations on if enabled is set to true. This respects the showAnnotations value if empty. The enabledTypes value is a list of annotation types to enable for this viewer. If empty, will respect default types for that annotator.

Example

Enable all annotations, turn off for Image Viewers, and enable only point annotations on Document viewer:

preview.show(fileId, token, {
  showAnnotations: true,
  viewers: {
    Image: {
      annotations: {
        enabled: false
      }
    },
    Document: {
      annotations: {
        enabled: true,
        enabledTypes: ["point"]
      }
    }
  }
});

Annotators

The name of an annotator can be one of the following DocAnnotator or ImageAnnotator. Call boxAnnotations.getAnnotators() to get the list of possible annotators.

Additional Methods

• annotator.init() initializes the annotator.
• annotator.isModeAnnotatable(/* String */ type) returns whether or not the current annotation mode is enabled for the current viewer/annotator.
• annotator.showModeAnnotateButton(/* String */ currentMode) shows the annotate button for the specified annotation mode.
• annotator.getAnnotateButton(/* String */ annotatorSelector) gets the annotation button element.
• annotator.showAnnotations() fetches and shows saved annotations.
• annotator.hideAnnotations() hides annotations.
• annotator.hideAnnotationsOnPage(/* number */ pageNum) hides annotations on a specified page.
• annotator.setScale() sets the zoom scale.
• annotator.toggleAnnotationHandler() toggles annotation modes on and off. When an annotation mode is on, annotation threads will be created at that location.
• annotator.disableAnnotationMode(/* String */ mode, /* HTMLElement */ buttonEl) disables the specified annotation mode.
• annotator.enableAnnotationMode(/* String */ mode, /* HTMLElement */ buttonEl) enables the specified annotation mode.
• annotator.getAnnotatedEl(/* HTMLElement */ containerEl) determines the annotated element in the viewer.
• annotator.createAnnotationThread(/* Annotation[] */ annotations, /* Object */ location, /* String */ [annotation type]) creates the proper type of annotation thread, adds it to the in-memory map, and returns it.

Events

Events can be bound to the annotator object with addListener and removed with removeListener. Event listeners should be bound before showAnnotations() is called, otherwise events can be missed.

/* global BoxAnnotations */
const boxAnnotations = new BoxAnnotations();
const annotatorConf = boxAnnotations.determineAnnotator(
  options,
  disabledAnnotationTypes
);

// Construct and init annotator
const annotator = new annotatorConf.CONSTRUCTOR(options);
var listener = value => {
  // Do something with value
};

// Attach listener before calling show otherwise events can be missed
annotator.addListener(EVENTNAME, listener);

// Initialize a annotator
annotator.showAnnotations();

// Remove listener when appropriate
annotator.removeListener(EVENTNAME, listener);

EVENTNAME can be one of the following

• annotator event will be triggered when we have the annotator instance first available. Box Annotations trigger this event before load so that clients can attach their listeners before the load event is triggered from Box Content Preview.
• annotationsfetched event will be triggered when annotations have been fetched from the Box API.
• annotationmodeenter event will be triggered on when an annotation mode is entered. The event data will contain:

{
  // Annotation mode that was entered
  mode: 'point',
  // Optional CSS selector for the container's header
  headerSelector: '.bp-preview-header',
}

annotationmodeexit event will be triggered on when an annotation mode is exited. The event data will contain:

{
  // Annotation mode that was exited
  mode: 'point',
  // Optional CSS selector for the container's header
  headerSelector: '.bp-preview-header',
}

annotationerror event will be triggered when an annotation error has occurred. The event data will contain:

{
  message: 'message', // Error message to show
}

annotationpending event will be triggered when an annotation thread was created but has not yet been saved on the server. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotationthreadsaved event will be triggered when an annotation thread was saved on the server. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotationthreaddeleted event will be triggered when an annotation thread was deleted on the server. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotationsaved event will be triggered when an annotation is added and saved to an existing annotation thread on the server. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotationdeleted event will be triggered when an annotation is deleted from an existing thread on the server. The entire annotation thread is not deleted. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotationcanceled event will be triggered when an annotation is canceled from posting on either a new or existing thread. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotationdeleteerror event will be triggered when an error occurs while deleting an annotation on either a new or existing thread. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotationcreateerror event will be triggered when an error occurs while posting an annotation on either a new or existing thread. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

annotatorevent Each annotator will trigger its own sets of events. For example, the Image Annotator will trigger rotate or resize, etc. while other annotator may trigger another set of events. The Annotator wrapper will also re-emit events at the Preview level in Box Content Preview, with event data containing:

{
  event: EVENTNAME,             // Event name
  data: DATA,                   // Event data object
  annotatorName: ANNOTATORNAME, // Name of the annotator
  fileVersionId: fileVersionId  // The file version id
  fileId: fileId                // The file id
}

Example event usage

preview.addListener("annotator", viewer => {
  annotator.addListener("annotationsfetched", () => {
    // Do something when annotations are fetched on a preview
  });
});

// Event listeners can be attached to viewers
preview.addListener("load", data => {
  var viewer = data.viewer;
  viewer.addListener("annotationsfetched", () => {
    // Do something when annotations are fetched on a preview
  });
});

// Event listeners can be attached to annotators
preview.addListener("load", data => {
  var annotator = data.viewer.annotator;
  annotator.addListener("annotationsfetched", () => {
    // Do something when annotations are fetched on a preview
  });
});

preview.addListener("annotatorevent", data => {
  if (data.event === "annotationsfetched") {
    // Do something when annotations are fetched on a preview
  } else if (data.event === "annotationerror") {
    // Do something different when an annotation error has occurred
  } else {
  }
});

preview.addListener("annotatorevent", data => {
  if (data.viewerName === "Image") {
    if (data.event === "annotationsfetched") {
      // Do something when annotations are fetched on an image preview
    }
  } else if (data.viewerName === "MultiImage") {
    if (data.event === "annotationsfetched") {
      // Do something different when annotations are fetched on a multi-page image
    }
  } else {
  }
});

preview.addListener("annotationsfetched", data => {
  if (data.viewerName === "Image") {
    // Do something when annotations are fetched on an image preview
  } else if (data.viewerName === "MultiImage") {
    // Do something different when annotations are fetched on a multi-page image
  } else {
  }
});

Annotation Thread

Thread Methods

The following methods are available for the annotation threads.

Thread Events

All annotation threads trigger the following events. The event data will contain:

{
  data: {
    type: 'point', // Annotation type
    threadID: '123abc',
    userId: '456def',
    threadNumber: '1' // Thread number from Annotations API
  }
}

See the Events section above for example event usage.

Annotation Dialog

Dialog Methods

The following methods are available for the annotation dialog.

Supported Annotation Types

Point annotations are supported on both document and image formats. Highlight comment, highlight only, and draw annotations are only supported on document formats.

Supported document file extensions: pdf, doc, docx, ppt, pptx, xlsx, xls, xlsm.

Supported image file extensions: ai, bmp, dcm, eps, gif, png, ps, psd, svs, tga, tif, tiff.