Object.prototype.hasOwnProperty
.\n *\n * @private\n * @type {Function}\n */\n var hasOwnProperty = Object.prototype.hasOwnProperty;\n /**\n * A reference to Array.prototype.slice
.\n *\n * @private\n * @type {Function}\n */\n var slice = Array.prototype.slice;\n\n /**\n * Creates an object which inherits the given prototype
.\n *\n * Optionally, the created object can be extended further with the specified properties
.\n *\n * @param {Object} prototype - the prototype to be inherited by the created object\n * @param {Object} [properties] - the optional properties to be extended by the created object\n * @return {Object} The newly created object.\n * @private\n */\n function createObject(prototype, properties) {\n var result;\n /* istanbul ignore next */\n if (typeof Object.create === 'function') {\n result = Object.create(prototype);\n } else {\n Constructor.prototype = prototype;\n result = new Constructor();\n Constructor.prototype = null;\n }\n\n if (properties) {\n extendObject(true, result, properties);\n }\n\n return result;\n }\n\n /**\n * Extends the constructor to which this method is associated with the prototype
and/or\n * statics
provided.\n *\n * If name
is provided, it will be used as the class name and can be accessed via a special\n * class_
property on the child constructor, otherwise the class name of the super constructor will be used\n * instead. The class name may also be used string representation for instances of the child constructor (via\n * toString
), but this is not applicable to the lite version of Nevis.\n *\n * If constructor
is provided, it will be used as the constructor for the child, otherwise a simple\n * constructor which only calls the super constructor will be used instead.\n *\n * The super constructor can be accessed via a special super_
property on the child constructor.\n *\n * @param {string} [name=this.class_] - the class name to be used for the child constructor\n * @param {Function} [constructor] - the constructor for the child\n * @param {Object} [prototype] - the prototype properties to be defined for the child\n * @param {Object} [statics] - the static properties to be defined for the child\n * @return {Function} The child constructor
provided or the one created if none was given.\n * @public\n */\n function extend(name, constructor, prototype, statics) {\n var superConstructor = this;\n\n if (typeof name !== 'string') {\n statics = prototype;\n prototype = constructor;\n constructor = name;\n name = null;\n }\n\n if (typeof constructor !== 'function') {\n statics = prototype;\n prototype = constructor;\n constructor = function() {\n return superConstructor.apply(this, arguments);\n };\n }\n\n extendObject(false, constructor, superConstructor, statics);\n\n constructor.prototype = createObject(superConstructor.prototype, prototype);\n constructor.prototype.constructor = constructor;\n\n constructor.class_ = name || superConstructor.class_;\n constructor.super_ = superConstructor;\n\n return constructor;\n }\n\n /**\n * Extends the specified target
object with the properties in each of the sources
provided.\n *\n * if any source is null
it will be ignored.\n *\n * @param {boolean} own - true
to only copy own properties from sources
onto\n * target
; otherwise false
\n * @param {Object} target - the target object which should be extended\n * @param {...Object} [sources] - the source objects whose properties are to be copied onto target
\n * @return {void}\n * @private\n */\n function extendObject(own, target, sources) {\n sources = slice.call(arguments, 2);\n\n var property;\n var source;\n\n for (var i = 0, length = sources.length; i < length; i++) {\n source = sources[i];\n\n for (property in source) {\n if (!own || hasOwnProperty.call(source, property)) {\n target[property] = source[property];\n }\n }\n }\n }\n\n var extend_1 = extend;\n\n /**\n * The base class from which all others should extend.\n *\n * @public\n * @constructor\n */\n function Nevis() {}\n Nevis.class_ = 'Nevis';\n Nevis.super_ = Object;\n\n /**\n * Extends the constructor to which this method is associated with the prototype
and/or\n * statics
provided.\n *\n * If name
is provided, it will be used as the class name and can be accessed via a special\n * class_
property on the child constructor, otherwise the class name of the super constructor will be used\n * instead. The class name may also be used string representation for instances of the child constructor (via\n * toString
), but this is not applicable to the lite version of Nevis.\n *\n * If constructor
is provided, it will be used as the constructor for the child, otherwise a simple\n * constructor which only calls the super constructor will be used instead.\n *\n * The super constructor can be accessed via a special super_
property on the child constructor.\n *\n * @param {string} [name=this.class_] - the class name to be used for the child constructor\n * @param {Function} [constructor] - the constructor for the child\n * @param {Object} [prototype] - the prototype properties to be defined for the child\n * @param {Object} [statics] - the static properties to be defined for the child\n * @return {Function} The child constructor
provided or the one created if none was given.\n * @public\n * @static\n * @memberof Nevis\n */\n Nevis.extend = extend_1;\n\n var nevis = Nevis;\n\n var lite = nevis;\n\n /**\n * Responsible for rendering a QR code {@link Frame} on a specific type of element.\n *\n * A renderer may be dependant on the rendering of another element, so the ordering of their execution is important.\n *\n * The rendering of a element can be deferred by disabling the renderer initially, however, any attempt get the element\n * from the renderer will result in it being immediately enabled and the element being rendered.\n *\n * @param {QRious} qrious - the {@link QRious} instance to be used\n * @param {*} element - the element onto which the QR code is to be rendered\n * @param {boolean} [enabled] - true
this {@link Renderer} is enabled; otherwise false
.\n * @public\n * @class\n * @extends Nevis\n */\n var Renderer = lite.extend(function(qrious, element, enabled) {\n /**\n * The {@link QRious} instance.\n *\n * @protected\n * @type {QRious}\n * @memberof Renderer#\n */\n this.qrious = qrious;\n\n /**\n * The element onto which this {@link Renderer} is rendering the QR code.\n *\n * @protected\n * @type {*}\n * @memberof Renderer#\n */\n this.element = element;\n this.element.qrious = qrious;\n\n /**\n * Whether this {@link Renderer} is enabled.\n *\n * @protected\n * @type {boolean}\n * @memberof Renderer#\n */\n this.enabled = Boolean(enabled);\n }, {\n\n /**\n * Draws the specified QR code frame
on the underlying element.\n *\n * Implementations of {@link Renderer} must override this method with their own specific logic.\n *\n * @param {Frame} frame - the {@link Frame} to be drawn\n * @return {void}\n * @protected\n * @abstract\n * @memberof Renderer#\n */\n draw: function(frame) {},\n\n /**\n * Returns the element onto which this {@link Renderer} is rendering the QR code.\n *\n * If this method is called while this {@link Renderer} is disabled, it will be immediately enabled and rendered\n * before the element is returned.\n *\n * @return {*} The element.\n * @public\n * @memberof Renderer#\n */\n getElement: function() {\n if (!this.enabled) {\n this.enabled = true;\n this.render();\n }\n\n return this.element;\n },\n\n /**\n * Calculates the size (in pixel units) to represent an individual module within the QR code based on the\n * frame
provided.\n *\n * Any configured padding will be excluded from the returned size.\n *\n * The returned value will be at least one, even in cases where the size of the QR code does not fit its contents.\n * This is done so that the inevitable clipping is handled more gracefully since this way at least something is\n * displayed instead of just a blank space filled by the background color.\n *\n * @param {Frame} frame - the {@link Frame} from which the module size is to be derived\n * @return {number} The pixel size for each module in the QR code which will be no less than one.\n * @protected\n * @memberof Renderer#\n */\n getModuleSize: function(frame) {\n var qrious = this.qrious;\n var padding = qrious.padding || 0;\n var pixels = Math.floor((qrious.size - (padding * 2)) / frame.width);\n\n return Math.max(1, pixels);\n },\n\n /**\n * Calculates the offset/padding (in pixel units) to be inserted before the QR code based on the frame
\n * provided.\n *\n * The returned value will be zero if there is no available offset or if the size of the QR code does not fit its\n * contents. It will never be a negative value. This is done so that the inevitable clipping appears more naturally\n * and it is not clipped from all directions.\n *\n * @param {Frame} frame - the {@link Frame} from which the offset is to be derived\n * @return {number} The pixel offset for the QR code which will be no less than zero.\n * @protected\n * @memberof Renderer#\n */\n getOffset: function(frame) {\n var qrious = this.qrious;\n var padding = qrious.padding;\n\n if (padding != null) {\n return padding;\n }\n\n var moduleSize = this.getModuleSize(frame);\n var offset = Math.floor((qrious.size - (moduleSize * frame.width)) / 2);\n\n return Math.max(0, offset);\n },\n\n /**\n * Renders a QR code on the underlying element based on the frame
provided.\n *\n * @param {Frame} frame - the {@link Frame} to be rendered\n * @return {void}\n * @public\n * @memberof Renderer#\n */\n render: function(frame) {\n if (this.enabled) {\n this.resize();\n this.reset();\n this.draw(frame);\n }\n },\n\n /**\n * Resets the underlying element, effectively clearing any previously rendered QR code.\n *\n * Implementations of {@link Renderer} must override this method with their own specific logic.\n *\n * @return {void}\n * @protected\n * @abstract\n * @memberof Renderer#\n */\n reset: function() {},\n\n /**\n * Ensures that the size of the underlying element matches that defined on the associated {@link QRious} instance.\n *\n * Implementations of {@link Renderer} must override this method with their own specific logic.\n *\n * @return {void}\n * @protected\n * @abstract\n * @memberof Renderer#\n */\n resize: function() {}\n\n });\n\n var Renderer_1 = Renderer;\n\n /**\n * An implementation of {@link Renderer} for working with canvas
elements.\n *\n * @public\n * @class\n * @extends Renderer\n */\n var CanvasRenderer = Renderer_1.extend({\n\n /**\n * @override\n */\n draw: function(frame) {\n var i, j;\n var qrious = this.qrious;\n var moduleSize = this.getModuleSize(frame);\n var offset = this.getOffset(frame);\n var context = this.element.getContext('2d');\n\n context.fillStyle = qrious.foreground;\n context.globalAlpha = qrious.foregroundAlpha;\n\n for (i = 0; i < frame.width; i++) {\n for (j = 0; j < frame.width; j++) {\n if (frame.buffer[(j * frame.width) + i]) {\n context.fillRect((moduleSize * i) + offset, (moduleSize * j) + offset, moduleSize, moduleSize);\n }\n }\n }\n },\n\n /**\n * @override\n */\n reset: function() {\n var qrious = this.qrious;\n var context = this.element.getContext('2d');\n var size = qrious.size;\n\n context.lineWidth = 1;\n context.clearRect(0, 0, size, size);\n context.fillStyle = qrious.background;\n context.globalAlpha = qrious.backgroundAlpha;\n context.fillRect(0, 0, size, size);\n },\n\n /**\n * @override\n */\n resize: function() {\n var element = this.element;\n\n element.width = element.height = this.qrious.size;\n }\n\n });\n\n var CanvasRenderer_1 = CanvasRenderer;\n\n /* eslint no-multi-spaces: \"off\" */\n\n\n\n /**\n * Contains alignment pattern information.\n *\n * @public\n * @class\n * @extends Nevis\n */\n var Alignment = lite.extend(null, {\n\n /**\n * The alignment pattern block.\n *\n * @public\n * @static\n * @type {number[]}\n * @memberof Alignment\n */\n BLOCK: [\n 0, 11, 15, 19, 23, 27, 31,\n 16, 18, 20, 22, 24, 26, 28, 20, 22, 24, 24, 26, 28, 28, 22, 24, 24,\n 26, 26, 28, 28, 24, 24, 26, 26, 26, 28, 28, 24, 26, 26, 26, 28, 28\n ]\n\n });\n\n var Alignment_1 = Alignment;\n\n /* eslint no-multi-spaces: \"off\" */\n\n\n\n /**\n * Contains error correction information.\n *\n * @public\n * @class\n * @extends Nevis\n */\n var ErrorCorrection = lite.extend(null, {\n\n /**\n * The error correction blocks.\n *\n * There are four elements per version. The first two indicate the number of blocks, then the data width, and finally\n * the ECC width.\n *\n * @public\n * @static\n * @type {number[]}\n * @memberof ErrorCorrection\n */\n BLOCKS: [\n 1, 0, 19, 7, 1, 0, 16, 10, 1, 0, 13, 13, 1, 0, 9, 17,\n 1, 0, 34, 10, 1, 0, 28, 16, 1, 0, 22, 22, 1, 0, 16, 28,\n 1, 0, 55, 15, 1, 0, 44, 26, 2, 0, 17, 18, 2, 0, 13, 22,\n 1, 0, 80, 20, 2, 0, 32, 18, 2, 0, 24, 26, 4, 0, 9, 16,\n 1, 0, 108, 26, 2, 0, 43, 24, 2, 2, 15, 18, 2, 2, 11, 22,\n 2, 0, 68, 18, 4, 0, 27, 16, 4, 0, 19, 24, 4, 0, 15, 28,\n 2, 0, 78, 20, 4, 0, 31, 18, 2, 4, 14, 18, 4, 1, 13, 26,\n 2, 0, 97, 24, 2, 2, 38, 22, 4, 2, 18, 22, 4, 2, 14, 26,\n 2, 0, 116, 30, 3, 2, 36, 22, 4, 4, 16, 20, 4, 4, 12, 24,\n 2, 2, 68, 18, 4, 1, 43, 26, 6, 2, 19, 24, 6, 2, 15, 28,\n 4, 0, 81, 20, 1, 4, 50, 30, 4, 4, 22, 28, 3, 8, 12, 24,\n 2, 2, 92, 24, 6, 2, 36, 22, 4, 6, 20, 26, 7, 4, 14, 28,\n 4, 0, 107, 26, 8, 1, 37, 22, 8, 4, 20, 24, 12, 4, 11, 22,\n 3, 1, 115, 30, 4, 5, 40, 24, 11, 5, 16, 20, 11, 5, 12, 24,\n 5, 1, 87, 22, 5, 5, 41, 24, 5, 7, 24, 30, 11, 7, 12, 24,\n 5, 1, 98, 24, 7, 3, 45, 28, 15, 2, 19, 24, 3, 13, 15, 30,\n 1, 5, 107, 28, 10, 1, 46, 28, 1, 15, 22, 28, 2, 17, 14, 28,\n 5, 1, 120, 30, 9, 4, 43, 26, 17, 1, 22, 28, 2, 19, 14, 28,\n 3, 4, 113, 28, 3, 11, 44, 26, 17, 4, 21, 26, 9, 16, 13, 26,\n 3, 5, 107, 28, 3, 13, 41, 26, 15, 5, 24, 30, 15, 10, 15, 28,\n 4, 4, 116, 28, 17, 0, 42, 26, 17, 6, 22, 28, 19, 6, 16, 30,\n 2, 7, 111, 28, 17, 0, 46, 28, 7, 16, 24, 30, 34, 0, 13, 24,\n 4, 5, 121, 30, 4, 14, 47, 28, 11, 14, 24, 30, 16, 14, 15, 30,\n 6, 4, 117, 30, 6, 14, 45, 28, 11, 16, 24, 30, 30, 2, 16, 30,\n 8, 4, 106, 26, 8, 13, 47, 28, 7, 22, 24, 30, 22, 13, 15, 30,\n 10, 2, 114, 28, 19, 4, 46, 28, 28, 6, 22, 28, 33, 4, 16, 30,\n 8, 4, 122, 30, 22, 3, 45, 28, 8, 26, 23, 30, 12, 28, 15, 30,\n 3, 10, 117, 30, 3, 23, 45, 28, 4, 31, 24, 30, 11, 31, 15, 30,\n 7, 7, 116, 30, 21, 7, 45, 28, 1, 37, 23, 30, 19, 26, 15, 30,\n 5, 10, 115, 30, 19, 10, 47, 28, 15, 25, 24, 30, 23, 25, 15, 30,\n 13, 3, 115, 30, 2, 29, 46, 28, 42, 1, 24, 30, 23, 28, 15, 30,\n 17, 0, 115, 30, 10, 23, 46, 28, 10, 35, 24, 30, 19, 35, 15, 30,\n 17, 1, 115, 30, 14, 21, 46, 28, 29, 19, 24, 30, 11, 46, 15, 30,\n 13, 6, 115, 30, 14, 23, 46, 28, 44, 7, 24, 30, 59, 1, 16, 30,\n 12, 7, 121, 30, 12, 26, 47, 28, 39, 14, 24, 30, 22, 41, 15, 30,\n 6, 14, 121, 30, 6, 34, 47, 28, 46, 10, 24, 30, 2, 64, 15, 30,\n 17, 4, 122, 30, 29, 14, 46, 28, 49, 10, 24, 30, 24, 46, 15, 30,\n 4, 18, 122, 30, 13, 32, 46, 28, 48, 14, 24, 30, 42, 32, 15, 30,\n 20, 4, 117, 30, 40, 7, 47, 28, 43, 22, 24, 30, 10, 67, 15, 30,\n 19, 6, 118, 30, 18, 31, 47, 28, 34, 34, 24, 30, 20, 61, 15, 30\n ],\n\n /**\n * The final format bits with mask (level << 3 | mask).\n *\n * @public\n * @static\n * @type {number[]}\n * @memberof ErrorCorrection\n */\n FINAL_FORMAT: [\n // L\n 0x77c4, 0x72f3, 0x7daa, 0x789d, 0x662f, 0x6318, 0x6c41, 0x6976,\n // M\n 0x5412, 0x5125, 0x5e7c, 0x5b4b, 0x45f9, 0x40ce, 0x4f97, 0x4aa0,\n // Q\n 0x355f, 0x3068, 0x3f31, 0x3a06, 0x24b4, 0x2183, 0x2eda, 0x2bed,\n // H\n 0x1689, 0x13be, 0x1ce7, 0x19d0, 0x0762, 0x0255, 0x0d0c, 0x083b\n ],\n\n /**\n * A map of human-readable ECC levels.\n *\n * @public\n * @static\n * @type {Object.img
elements.\n *\n * This depends on {@link CanvasRenderer} being executed first as this implementation simply applies the data URL from\n * the rendered canvas
element as the src
for the img
element being rendered.\n *\n * @public\n * @class\n * @extends Renderer\n */\n var ImageRenderer = Renderer_1.extend({\n\n /**\n * @override\n */\n draw: function() {\n this.element.src = this.qrious.toDataURL();\n },\n\n /**\n * @override\n */\n reset: function() {\n this.element.src = '';\n },\n\n /**\n * @override\n */\n resize: function() {\n var element = this.element;\n\n element.width = element.height = this.qrious.size;\n }\n\n });\n\n var ImageRenderer_1 = ImageRenderer;\n\n /**\n * Defines an available option while also configuring how values are applied to the target object.\n *\n * Optionally, a default value can be specified as well a value transformer for greater control over how the option\n * value is applied.\n *\n * If no value transformer is specified, then any specified option will be applied directly. All values are maintained\n * on the target object itself as a field using the option name prefixed with a single underscore.\n *\n * When an option is specified as modifiable, the {@link OptionManager} will be required to include a setter for the\n * property that is defined on the target object that uses the option name.\n *\n * @param {string} name - the name to be used\n * @param {boolean} [modifiable] - true
if the property defined on target objects should include a setter;\n * otherwise false
\n * @param {*} [defaultValue] - the default value to be used\n * @param {Option~ValueTransformer} [valueTransformer] - the value transformer to be used\n * @public\n * @class\n * @extends Nevis\n */\n var Option = lite.extend(function(name, modifiable, defaultValue, valueTransformer) {\n /**\n * The name for this {@link Option}.\n *\n * @public\n * @type {string}\n * @memberof Option#\n */\n this.name = name;\n\n /**\n * Whether a setter should be included on the property defined on target objects for this {@link Option}.\n *\n * @public\n * @type {boolean}\n * @memberof Option#\n */\n this.modifiable = Boolean(modifiable);\n\n /**\n * The default value for this {@link Option}.\n *\n * @public\n * @type {*}\n * @memberof Option#\n */\n this.defaultValue = defaultValue;\n\n this._valueTransformer = valueTransformer;\n }, {\n\n /**\n * Transforms the specified value
so that it can be applied for this {@link Option}.\n *\n * If a value transformer has been specified for this {@link Option}, it will be called upon to transform\n * value
. Otherwise, value
will be returned directly.\n *\n * @param {*} value - the value to be transformed\n * @return {*} The transformed value or value
if no value transformer is specified.\n * @public\n * @memberof Option#\n */\n transform: function(value) {\n var transformer = this._valueTransformer;\n if (typeof transformer === 'function') {\n return transformer(value, this);\n }\n\n return value;\n }\n\n });\n\n var Option_1 = Option;\n\n /**\n * Returns a transformed value for the specified value
to be applied for the option
provided.\n *\n * @callback Option~ValueTransformer\n * @param {*} value - the value to be transformed\n * @param {Option} option - the {@link Option} for which value
is being transformed\n * @return {*} The transform value.\n */\n\n /**\n * Contains utility methods that are useful throughout the library.\n *\n * @public\n * @class\n * @extends Nevis\n */\n var Utilities = lite.extend(null, {\n\n /**\n * Returns the absolute value of a given number.\n *\n * This method is simply a convenient shorthand for Math.abs
while ensuring that nulls are returned as\n * null
instead of zero.\n *\n * @param {number} value - the number whose absolute value is to be returned\n * @return {number} The absolute value of value
or null
if value
is\n * null
.\n * @public\n * @static\n * @memberof Utilities\n */\n abs: function(value) {\n return value != null ? Math.abs(value) : null;\n },\n\n /**\n * Returns whether the specified object
has a property with the specified name
as an own\n * (not inherited) property.\n *\n * @param {Object} object - the object on which the property is to be checked\n * @param {string} name - the name of the property to be checked\n * @return {boolean} true
if object
has an own property with name
.\n * @public\n * @static\n * @memberof Utilities\n */\n hasOwn: function(object, name) {\n return Object.prototype.hasOwnProperty.call(object, name);\n },\n\n /**\n * A non-operation method that does absolutely nothing.\n *\n * @return {void}\n * @public\n * @static\n * @memberof Utilities\n */\n noop: function() {},\n\n /**\n * Transforms the specified string
to upper case while remaining null-safe.\n *\n * @param {string} string - the string to be transformed to upper case\n * @return {string} string
transformed to upper case if string
is not null
.\n * @public\n * @static\n * @memberof Utilities\n */\n toUpperCase: function(string) {\n return string != null ? string.toUpperCase() : null;\n }\n\n });\n\n var Utilities_1 = Utilities;\n\n /**\n * Manages multiple {@link Option} instances that are intended to be used by multiple implementations.\n *\n * Although the option definitions are shared between targets, the values are maintained on the targets themselves.\n *\n * @param {Option[]} options - the options to be used\n * @public\n * @class\n * @extends Nevis\n */\n var OptionManager = lite.extend(function(options) {\n /**\n * The available options for this {@link OptionManager}.\n *\n * @public\n * @type {Object.name
is available.\n *\n * @param {string} name - the name of the {@link Option} whose existence is to be checked\n * @return {boolean} true
if an {@link Option} exists with name
; otherwise\n * false
.\n * @public\n * @memberof OptionManager#\n */\n exists: function(name) {\n return this.options[name] != null;\n },\n\n /**\n * Returns the value of the option with the specified name
on the target
object provided.\n *\n * @param {string} name - the name of the {@link Option} whose value on target
is to be returned\n * @param {Object} target - the object from which the value of the named {@link Option} is to be returned\n * @return {*} The value of the {@link Option} with name
on target
.\n * @public\n * @memberof OptionManager#\n */\n get: function(name, target) {\n return OptionManager._get(this.options[name], target);\n },\n\n /**\n * Returns a copy of all of the available options on the target
object provided.\n *\n * @param {Object} target - the object from which the option name/value pairs are to be returned\n * @return {Object.target
.\n * @public\n * @memberof OptionManager#\n */\n getAll: function(target) {\n var name;\n var options = this.options;\n var result = {};\n\n for (name in options) {\n if (Utilities_1.hasOwn(options, name)) {\n result[name] = OptionManager._get(options[name], target);\n }\n }\n\n return result;\n },\n\n /**\n * Initializes the available options for the target
object provided and then applies the initial values\n * within the speciifed options
.\n *\n * This method will throw an error if any of the names within options
does not match an available option.\n *\n * This involves setting the default values and defining properties for all of the available options on\n * target
before finally calling {@link OptionMananger#setAll} with options
and\n * target
. Any options that are configured to be modifiable will have a setter included in their defined\n * property that will allow its corresponding value to be modified.\n *\n * If a change handler is specified, it will be called whenever the value changes on target
for a\n * modifiable option, but only when done so via the defined property's setter.\n *\n * @param {Object.target
\n * @return {void}\n * @throws {Error} If options
contains an invalid option name.\n * @public\n * @memberof OptionManager#\n */\n init: function(options, target, changeHandler) {\n if (typeof changeHandler !== 'function') {\n changeHandler = Utilities_1.noop;\n }\n\n var name, option;\n\n for (name in this.options) {\n if (Utilities_1.hasOwn(this.options, name)) {\n option = this.options[name];\n\n OptionManager._set(option, option.defaultValue, target);\n OptionManager._createAccessor(option, target, changeHandler);\n }\n }\n\n this._setAll(options, target, true);\n },\n\n /**\n * Sets the value of the option with the specified name
on the target
object provided to\n * value
.\n *\n * This method will throw an error if name
does not match an available option or matches an option that\n * cannot be modified.\n *\n * If value
is null
and the {@link Option} has a default value configured, then that default\n * value will be used instead. If the {@link Option} also has a value transformer configured, it will be used to\n * transform whichever value was determined to be used.\n *\n * This method returns whether the value of the underlying field on target
was changed as a result.\n *\n * @param {string} name - the name of the {@link Option} whose value is to be set\n * @param {*} value - the value to be set for the named {@link Option} on target
\n * @param {Object} target - the object on which value
is to be set for the named {@link Option}\n * @return {boolean} true
if the underlying field on target
was changed; otherwise\n * false
.\n * @throws {Error} If name
is invalid or is for an option that cannot be modified.\n * @public\n * @memberof OptionManager#\n */\n set: function(name, value, target) {\n return this._set(name, value, target);\n },\n\n /**\n * Sets all of the specified options
on the target
object provided to their corresponding\n * values.\n *\n * This method will throw an error if any of the names within options
does not match an available option\n * or matches an option that cannot be modified.\n *\n * If any value within options
is null
and the corresponding {@link Option} has a default\n * value configured, then that default value will be used instead. If an {@link Option} also has a value transformer\n * configured, it will be used to transform whichever value was determined to be used.\n *\n * This method returns whether the value for any of the underlying fields on target
were changed as a\n * result.\n *\n * @param {Object.true
if any of the underlying fields on target
were changed; otherwise\n * false
.\n * @throws {Error} If options
contains an invalid option name or an option that cannot be modiifed.\n * @public\n * @memberof OptionManager#\n */\n setAll: function(options, target) {\n return this._setAll(options, target);\n },\n\n _set: function(name, value, target, allowUnmodifiable) {\n var option = this.options[name];\n if (!option) {\n throw new Error('Invalid option: ' + name);\n }\n if (!option.modifiable && !allowUnmodifiable) {\n throw new Error('Option cannot be modified: ' + name);\n }\n\n return OptionManager._set(option, value, target);\n },\n\n _setAll: function(options, target, allowUnmodifiable) {\n if (!options) {\n return false;\n }\n\n var name;\n var changed = false;\n\n for (name in options) {\n if (Utilities_1.hasOwn(options, name) && this._set(name, options[name], target, allowUnmodifiable)) {\n changed = true;\n }\n }\n\n return changed;\n }\n\n }, {\n\n _createAccessor: function(option, target, changeHandler) {\n var descriptor = {\n get: function() {\n return OptionManager._get(option, target);\n }\n };\n\n if (option.modifiable) {\n descriptor.set = function(value) {\n if (OptionManager._set(option, value, target)) {\n changeHandler(value, option);\n }\n };\n }\n\n Object.defineProperty(target, option.name, descriptor);\n },\n\n _get: function(option, target) {\n return target['_' + option.name];\n },\n\n _set: function(option, value, target) {\n var fieldName = '_' + option.name;\n var oldValue = target[fieldName];\n var newValue = option.transform(value != null ? value : option.defaultValue);\n\n target[fieldName] = newValue;\n\n return newValue !== oldValue;\n }\n\n });\n\n var OptionManager_1 = OptionManager;\n\n /**\n * Called whenever the value of a modifiable {@link Option} is changed on a target object via the defined property's\n * setter.\n *\n * @callback OptionManager~ChangeHandler\n * @param {*} value - the new value for option
on the target object\n * @param {Option} option - the modifable {@link Option} whose value has changed on the target object.\n * @return {void}\n */\n\n /**\n * A basic manager for {@link Service} implementations that are mapped to simple names.\n *\n * @public\n * @class\n * @extends Nevis\n */\n var ServiceManager = lite.extend(function() {\n this._services = {};\n }, {\n\n /**\n * Returns the {@link Service} being managed with the specified name
.\n *\n * @param {string} name - the name of the {@link Service} to be returned\n * @return {Service} The {@link Service} is being managed with name
.\n * @throws {Error} If no {@link Service} is being managed with name
.\n * @public\n * @memberof ServiceManager#\n */\n getService: function(name) {\n var service = this._services[name];\n if (!service) {\n throw new Error('Service is not being managed with name: ' + name);\n }\n\n return service;\n },\n\n /**\n * Sets the {@link Service} implementation to be managed for the specified name
to the\n * service
provided.\n *\n * @param {string} name - the name of the {@link Service} to be managed with name
\n * @param {Service} service - the {@link Service} implementation to be managed\n * @return {void}\n * @throws {Error} If a {@link Service} is already being managed with the same name
.\n * @public\n * @memberof ServiceManager#\n */\n setService: function(name, service) {\n if (this._services[name]) {\n throw new Error('Service is already managed with name: ' + name);\n }\n\n if (service) {\n this._services[name] = service;\n }\n }\n\n });\n\n var ServiceManager_1 = ServiceManager;\n\n var optionManager = new OptionManager_1([\n new Option_1('background', true, 'white'),\n new Option_1('backgroundAlpha', true, 1, Utilities_1.abs),\n new Option_1('element'),\n new Option_1('foreground', true, 'black'),\n new Option_1('foregroundAlpha', true, 1, Utilities_1.abs),\n new Option_1('level', true, 'L', Utilities_1.toUpperCase),\n new Option_1('mime', true, 'image/png'),\n new Option_1('padding', true, null, Utilities_1.abs),\n new Option_1('size', true, 100, Utilities_1.abs),\n new Option_1('value', true, '')\n ]);\n var serviceManager = new ServiceManager_1();\n\n /**\n * Enables configuration of a QR code generator which uses HTML5 canvas
for rendering.\n *\n * @param {QRious~Options} [options] - the options to be used\n * @throws {Error} If any options
are invalid.\n * @public\n * @class\n * @extends Nevis\n */\n var QRious = lite.extend(function(options) {\n optionManager.init(options, this, this.update.bind(this));\n\n var element = optionManager.get('element', this);\n var elementService = serviceManager.getService('element');\n var canvas = element && elementService.isCanvas(element) ? element : elementService.createCanvas();\n var image = element && elementService.isImage(element) ? element : elementService.createImage();\n\n this._canvasRenderer = new CanvasRenderer_1(this, canvas, true);\n this._imageRenderer = new ImageRenderer_1(this, image, image === element);\n\n this.update();\n }, {\n\n /**\n * Returns all of the options configured for this {@link QRious}.\n *\n * Any changes made to the returned object will not be reflected in the options themselves or their corresponding\n * underlying fields.\n *\n * @return {Object.options
and automatically updates this {@link QRious} if any of the\n * underlying fields are changed as a result.\n *\n * This is the preferred method for updating multiple options at one time to avoid unnecessary updates between\n * changes.\n *\n * @param {QRious~Options} options - the options to be set\n * @return {void}\n * @throws {Error} If any options
are invalid or cannot be modified.\n * @public\n * @memberof QRious#\n */\n set: function(options) {\n if (optionManager.setAll(options, this)) {\n this.update();\n }\n },\n\n /**\n * Returns the image data URI for the generated QR code using the mime
provided.\n *\n * @param {string} [mime] - the MIME type for the image\n * @return {string} The image data URI for the QR code.\n * @public\n * @memberof QRious#\n */\n toDataURL: function(mime) {\n return this.canvas.toDataURL(mime || this.mime);\n },\n\n /**\n * Updates this {@link QRious} by generating a new {@link Frame} and re-rendering the QR code.\n *\n * @return {void}\n * @protected\n * @memberof QRious#\n */\n update: function() {\n var frame = new Frame_1({\n level: this.level,\n value: this.value\n });\n\n this._canvasRenderer.render(frame);\n this._imageRenderer.render(frame);\n }\n\n }, {\n\n /**\n * Configures the service
provided to be used by all {@link QRious} instances.\n *\n * @param {Service} service - the {@link Service} to be configured\n * @return {void}\n * @throws {Error} If a {@link Service} has already been configured with the same name.\n * @public\n * @static\n * @memberof QRious\n */\n use: function(service) {\n serviceManager.setService(service.getName(), service);\n }\n\n });\n\n Object.defineProperties(QRious.prototype, {\n\n canvas: {\n /**\n * Returns the canvas
element being used to render the QR code for this {@link QRious}.\n *\n * @return {*} The canvas
element.\n * @public\n * @memberof QRious#\n * @alias canvas\n */\n get: function() {\n return this._canvasRenderer.getElement();\n }\n },\n\n image: {\n /**\n * Returns the img
element being used to render the QR code for this {@link QRious}.\n *\n * @return {*} The img
element.\n * @public\n * @memberof QRious#\n * @alias image\n */\n get: function() {\n return this._imageRenderer.getElement();\n }\n }\n\n });\n\n var QRious_1$2 = QRious;\n\n /**\n * The options used by {@link QRious}.\n *\n * @typedef {Object} QRious~Options\n * @property {string} [background=\"white\"] - The background color to be applied to the QR code.\n * @property {number} [backgroundAlpha=1] - The background alpha to be applied to the QR code.\n * @property {*} [element] - The element to be used to render the QR code which may either be an canvas
or\n * img
. The element(s) will be created if needed.\n * @property {string} [foreground=\"black\"] - The foreground color to be applied to the QR code.\n * @property {number} [foregroundAlpha=1] - The foreground alpha to be applied to the QR code.\n * @property {string} [level=\"L\"] - The error correction level to be applied to the QR code.\n * @property {string} [mime=\"image/png\"] - The MIME type to be used to render the image for the QR code.\n * @property {number} [padding] - The padding for the QR code in pixels.\n * @property {number} [size=100] - The size of the QR code in pixels.\n * @property {string} [value=\"\"] - The value to be encoded within the QR code.\n */\n\n var index = QRious_1$2;\n\n /**\n * Defines a service contract that must be met by all implementations.\n *\n * @public\n * @class\n * @extends Nevis\n */\n var Service = lite.extend({\n\n /**\n * Returns the name of this {@link Service}.\n *\n * @return {string} The service name.\n * @public\n * @abstract\n * @memberof Service#\n */\n getName: function() {}\n\n });\n\n var Service_1 = Service;\n\n /**\n * A service for working with elements.\n *\n * @public\n * @class\n * @extends Service\n */\n var ElementService = Service_1.extend({\n\n /**\n * Creates an instance of a canvas element.\n *\n * Implementations of {@link ElementService} must override this method with their own specific logic.\n *\n * @return {*} The newly created canvas element.\n * @public\n * @abstract\n * @memberof ElementService#\n */\n createCanvas: function() {},\n\n /**\n * Creates an instance of a image element.\n *\n * Implementations of {@link ElementService} must override this method with their own specific logic.\n *\n * @return {*} The newly created image element.\n * @public\n * @abstract\n * @memberof ElementService#\n */\n createImage: function() {},\n\n /**\n * @override\n */\n getName: function() {\n return 'element';\n },\n\n /**\n * Returns whether the specified element
is a canvas.\n *\n * Implementations of {@link ElementService} must override this method with their own specific logic.\n *\n * @param {*} element - the element to be checked\n * @return {boolean} true
if element
is a canvas; otherwise false
.\n * @public\n * @abstract\n * @memberof ElementService#\n */\n isCanvas: function(element) {},\n\n /**\n * Returns whether the specified element
is an image.\n *\n * Implementations of {@link ElementService} must override this method with their own specific logic.\n *\n * @param {*} element - the element to be checked\n * @return {boolean} true
if element
is an image; otherwise false
.\n * @public\n * @abstract\n * @memberof ElementService#\n */\n isImage: function(element) {}\n\n });\n\n var ElementService_1 = ElementService;\n\n /**\n * An implementation of {@link ElementService} intended for use within a browser environment.\n *\n * @public\n * @class\n * @extends ElementService\n */\n var BrowserElementService = ElementService_1.extend({\n\n /**\n * @override\n */\n createCanvas: function() {\n return document.createElement('canvas');\n },\n\n /**\n * @override\n */\n createImage: function() {\n return document.createElement('img');\n },\n\n /**\n * @override\n */\n isCanvas: function(element) {\n return element instanceof HTMLCanvasElement;\n },\n\n /**\n * @override\n */\n isImage: function(element) {\n return element instanceof HTMLImageElement;\n }\n\n });\n\n var BrowserElementService_1 = BrowserElementService;\n\n index.use(new BrowserElementService_1());\n\n var QRious_1 = index;\n\n return QRious_1;\n\n})));\n\n\n});\n\nvar _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };\n\nvar index = {\n name: 'qrcode',\n\n props: {\n /**\n * The options for the QR code generator.\n * {@link https://github.com/neocotic/qrious#api}\n */\n options: Object,\n\n /**\n * The tag of the component root element.\n */\n tag: {\n type: String,\n default: 'canvas'\n },\n\n /**\n * The value of the QR code.\n */\n value: {\n type: null,\n default: ''\n }\n },\n\n render: function render(createElement) {\n return createElement(this.tag, this.$slots.default);\n },\n\n\n watch: {\n /**\n * Update QR code when value change.\n */\n value: function value() {\n this.generate();\n },\n\n\n /**\n * Update QR code when options change.\n */\n options: function options() {\n this.generate();\n }\n },\n\n methods: {\n /**\n * Generate QR code.\n */\n generate: function generate() {\n if (this.$el) {\n new qrious(_extends({\n element: this.$el,\n value: String(this.value)\n }, this.options));\n }\n }\n },\n\n mounted: function mounted() {\n this.generate();\n }\n};\n\nexport default index;\n"],"sourceRoot":""}