Barcode Generation

node_modules/jsbarcode/bin/help/getRenderProperties.js

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+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+	value: true
+});
+
+var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; /* global HTMLImageElement */
+/* global HTMLCanvasElement */
+/* global SVGElement */
+
+var _getOptionsFromElement = require("./getOptionsFromElement.js");
+
+var _getOptionsFromElement2 = _interopRequireDefault(_getOptionsFromElement);
+
+var _renderers = require("../renderers");
+
+var _renderers2 = _interopRequireDefault(_renderers);
+
+var _exceptions = require("../exceptions/exceptions.js");
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+// Takes an element and returns an object with information about how
+// it should be rendered
+// This could also return an array with these objects
+// {
+//   element: The element that the renderer should draw on
+//   renderer: The name of the renderer
+//   afterRender (optional): If something has to done after the renderer
+//     completed, calls afterRender (function)
+//   options (optional): Options that can be defined in the element
+// }
+
+function getRenderProperties(element) {
+	// If the element is a string, query select call again
+	if (typeof element === "string") {
+		return querySelectedRenderProperties(element);
+	}
+	// If element is array. Recursivly call with every object in the array
+	else if (Array.isArray(element)) {
+			var returnArray = [];
+			for (var i = 0; i < element.length; i++) {
+				returnArray.push(getRenderProperties(element[i]));
+			}
+			return returnArray;
+		}
+		// If element, render on canvas and set the uri as src
+		else if (typeof HTMLCanvasElement !== 'undefined' && element instanceof HTMLImageElement) {
+				return newCanvasRenderProperties(element);
+			}
+			// If SVG
+			else if (element && element.nodeName && element.nodeName.toLowerCase() === 'svg' || typeof SVGElement !== 'undefined' && element instanceof SVGElement) {
+					return {
+						element: element,
+						options: (0, _getOptionsFromElement2.default)(element),
+						renderer: _renderers2.default.SVGRenderer
+					};
+				}
+				// If canvas (in browser)
+				else if (typeof HTMLCanvasElement !== 'undefined' && element instanceof HTMLCanvasElement) {
+						return {
+							element: element,
+							options: (0, _getOptionsFromElement2.default)(element),
+							renderer: _renderers2.default.CanvasRenderer
+						};
+					}
+					// If canvas (in node)
+					else if (element && element.getContext) {
+							return {
+								element: element,
+								renderer: _renderers2.default.CanvasRenderer
+							};
+						} else if (element && (typeof element === "undefined" ? "undefined" : _typeof(element)) === 'object' && !element.nodeName) {
+							return {
+								element: element,
+								renderer: _renderers2.default.ObjectRenderer
+							};
+						} else {
+							throw new _exceptions.InvalidElementException();
+						}
+}
+
+function querySelectedRenderProperties(string) {
+	var selector = document.querySelectorAll(string);
+	if (selector.length === 0) {
+		return undefined;
+	} else {
+		var returnArray = [];
+		for (var i = 0; i < selector.length; i++) {
+			returnArray.push(getRenderProperties(selector[i]));
+		}
+		return returnArray;
+	}
+}
+
+function newCanvasRenderProperties(imgElement) {
+	var canvas = document.createElement('canvas');
+	return {
+		element: canvas,
+		options: (0, _getOptionsFromElement2.default)(imgElement),
+		renderer: _renderers2.default.CanvasRenderer,
+		afterRender: function afterRender() {
+			imgElement.setAttribute("src", canvas.toDataURL());
+		}
+	};
+}
+
+exports.default = getRenderProperties;