Objective.js

Objective

An instance of ImageModel is a data model which describes an image with the following property:

image	An object with a property `image`, an array which contains the data URL of the image - a character string such as data:image/png;base64,...=, the width and the height of the image - 2 positive integers, and a property `size`, an array of 2 positive integers, the width and the height of the image when displayed.

function ImageModel(name = null) {
Model.call(this, name);
this._value = {
image: { image: null, size: [0, 0] }
};
}
ImageModel.prototype = Object.create(Model.prototype);
Object.defineProperty(ImageModel.prototype, 'constructor', { value: ImageModel, enumerable: false, writable: true });

An instance of ImageModel inherits from the class Model.

ImageModel.prototype.validateValue = function(prop, val) {
if (prop == 'image') {
if (typeof val !== 'object')
return false;
const { image, size } = val;
if (image === null)
return true;
if (! (Array.isArray(image) && Validator.validateImageDataURL(image[0]) && Number.isInteger(image[1]) && Number.isInteger(image[2]) && image[1] >= 0 && image[2] >= 0))
return false;
if (! (Array.isArray(size) && Number.isInteger(size[0]) && Number.isInteger(size[1]) && size[0] >= 0 && size[1] >= 0))
return false;
return true;
}
return true;
};

objectivejs.org