// Import all the barcodes
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import barcodes from './barcodes/';
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// Help functions
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import merge from './help/merge.js';
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import linearizeEncodings from './help/linearizeEncodings.js';
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import fixOptions from './help/fixOptions.js';
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import getRenderProperties from './help/getRenderProperties.js';
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import optionsFromStrings from './help/optionsFromStrings.js';
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// Exceptions
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import ErrorHandler from './exceptions/ErrorHandler.js';
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import {InvalidInputException, NoElementException} from './exceptions/exceptions.js';
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// Default values
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import defaults from './options/defaults.js';
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// The protype of the object returned from the JsBarcode() call
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let API = function(){};
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// The first call of the library API
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// Will return an object with all barcodes calls and the data that is used
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// by the renderers
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let JsBarcode = function(element, text, options){
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var api = new API();
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if(typeof element === "undefined"){
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throw Error("No element to render on was provided.");
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}
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// Variables that will be pased through the API calls
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api._renderProperties = getRenderProperties(element);
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api._encodings = [];
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api._options = defaults;
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api._errorHandler = new ErrorHandler(api);
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// If text is set, use the simple syntax (render the barcode directly)
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if(typeof text !== "undefined"){
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options = options || {};
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if(!options.format){
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options.format = autoSelectBarcode();
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}
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api.options(options)[options.format](text, options).render();
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}
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return api;
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};
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// To make tests work TODO: remove
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JsBarcode.getModule = function(name){
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return barcodes[name];
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};
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// Register all barcodes
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for(var name in barcodes){
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if(barcodes.hasOwnProperty(name)){ // Security check if the propery is a prototype property
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registerBarcode(barcodes, name);
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}
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}
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function registerBarcode(barcodes, name){
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API.prototype[name] =
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API.prototype[name.toUpperCase()] =
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API.prototype[name.toLowerCase()] =
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function(text, options){
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var api = this;
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return api._errorHandler.wrapBarcodeCall(function(){
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// Ensure text is options.text
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options.text = typeof options.text === 'undefined' ? undefined : '' + options.text;
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var newOptions = merge(api._options, options);
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newOptions = optionsFromStrings(newOptions);
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var Encoder = barcodes[name];
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var encoded = encode(text, Encoder, newOptions);
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api._encodings.push(encoded);
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return api;
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});
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};
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}
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// encode() handles the Encoder call and builds the binary string to be rendered
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function encode(text, Encoder, options){
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// Ensure that text is a string
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text = "" + text;
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var encoder = new Encoder(text, options);
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// If the input is not valid for the encoder, throw error.
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// If the valid callback option is set, call it instead of throwing error
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if(!encoder.valid()){
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throw new InvalidInputException(encoder.constructor.name, text);
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}
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// Make a request for the binary data (and other infromation) that should be rendered
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var encoded = encoder.encode();
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// Encodings can be nestled like [[1-1, 1-2], 2, [3-1, 3-2]
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// Convert to [1-1, 1-2, 2, 3-1, 3-2]
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encoded = linearizeEncodings(encoded);
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// Merge
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for(let i = 0; i < encoded.length; i++){
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encoded[i].options = merge(options, encoded[i].options);
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}
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return encoded;
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}
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function autoSelectBarcode(){
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// If CODE128 exists. Use it
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if(barcodes["CODE128"]){
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return "CODE128";
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}
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// Else, take the first (probably only) barcode
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return Object.keys(barcodes)[0];
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}
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// Sets global encoder options
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// Added to the api by the JsBarcode function
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API.prototype.options = function(options){
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this._options = merge(this._options, options);
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return this;
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};
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// Will create a blank space (usually in between barcodes)
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API.prototype.blank = function(size){
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const zeroes = new Array(size + 1).join("0");
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this._encodings.push({data: zeroes});
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return this;
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};
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// Initialize JsBarcode on all HTML elements defined.
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API.prototype.init = function(){
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// Should do nothing if no elements where found
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if(!this._renderProperties){
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return;
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}
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// Make sure renderProperies is an array
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if(!Array.isArray(this._renderProperties)){
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this._renderProperties = [this._renderProperties];
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}
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var renderProperty;
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for(let i in this._renderProperties){
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renderProperty = this._renderProperties[i];
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var options = merge(this._options, renderProperty.options);
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if(options.format == "auto"){
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options.format = autoSelectBarcode();
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}
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this._errorHandler.wrapBarcodeCall(function(){
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var text = options.value;
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var Encoder = barcodes[options.format.toUpperCase()];
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var encoded = encode(text, Encoder, options);
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render(renderProperty, encoded, options);
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});
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}
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};
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// The render API call. Calls the real render function.
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API.prototype.render = function(){
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if(!this._renderProperties){
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throw new NoElementException();
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}
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if(Array.isArray(this._renderProperties)){
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for(var i = 0; i < this._renderProperties.length; i++){
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render(this._renderProperties[i], this._encodings, this._options);
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}
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}
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else{
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render(this._renderProperties, this._encodings, this._options);
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}
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return this;
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};
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API.prototype._defaults = defaults;
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// Prepares the encodings and calls the renderer
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function render(renderProperties, encodings, options){
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encodings = linearizeEncodings(encodings);
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for(let i = 0; i < encodings.length; i++){
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encodings[i].options = merge(options, encodings[i].options);
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fixOptions(encodings[i].options);
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}
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fixOptions(options);
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var Renderer = renderProperties.renderer;
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var renderer = new Renderer(renderProperties.element, encodings, options);
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renderer.render();
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if(renderProperties.afterRender){
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renderProperties.afterRender();
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}
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}
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// Export to browser
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if(typeof window !== "undefined"){
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window.JsBarcode = JsBarcode;
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}
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// Export to jQuery
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/*global jQuery */
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if (typeof jQuery !== 'undefined') {
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jQuery.fn.JsBarcode = function(content, options){
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var elementArray = [];
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jQuery(this).each(function() {
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elementArray.push(this);
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});
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return JsBarcode(elementArray, content, options);
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};
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}
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// Export to commonJS
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module.exports = JsBarcode;
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