// Switch to Mata interpreter/compiler mata: // Drops class object if it already exists // mata drop a() // Definition of HTML Tag a Mata Class // Defines a hyperlink// Information retrieved from http://www.w3schools.com/tags/tag_a.asp class a extends htmlglobal { // Define private member variables private: // Static/final variables static string scalar opens, opene, close // String scalar attributes string scalar htmlcharset, htmlcoords, htmldownload, htmlhref, htmlhreflang, htmlmedia, htmlname, htmlrel, htmlrev, htmlshape, htmltarget, htmltype // Make class args non-static to prevent assignment of class args to all instances of class string scalar classargs // Define public members/methods public: // Class constructor method void new() // Setter methods class a scalar setClassArgs(), setCharset(), setCoords(), setDownload(), setHref(), setHreflang(), setMedia(), setName(), setRel(), setRev(), setShape(), setTarget(), setType() // Getter methods string scalar getOpens(), getOpene(), getClose(), print(), getClassArgs(), getCharset(), getCoords(), getDownload(), getHref(), getHreflang(), getMedia(), getName(), getRel(), getRev(), getShape(), getTarget(), getType() } // End of class declaration // Class constructor method declaration void a::new() { // Defines the start of the opening tag for the class this.opens = "<a" // Defines the end of the opening tag for the class this.opene = ">" // Defines the closing tag for the class this.close = "</a>" } // End of class constructor method definition // Setter method for class arguments (appear between HTML tags) class a scalar a::setClassArgs(| string scalar classarguments) { // Defines arguments that appear between HTML tags this.classargs = classarguments // Return a copy of the object return(this) } // End of setter method for class arguments // Not supported in HTML5.Specifies the character-set of a linked document class a scalar a::setCharset(| string scalar methodarg) { // Set the attribute charset for this class this.htmlcharset = `" charset=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method charset declaration for class a // Not supported in HTML5.Specifies the coordinates of a link class a scalar a::setCoords(| string scalar methodarg) { // Set the attribute coords for this class this.htmlcoords = `" coords=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method coords declaration for class a // Specifies that the target will be downloaded when a user clicks on the hyperlink class a scalar a::setDownload(| string scalar methodarg) { // Set the attribute download for this class this.htmldownload = `" download=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method download declaration for class a // Specifies the URL of the page the link goes to class a scalar a::setHref(| string scalar methodarg) { // Set the attribute href for this class this.htmlhref = `" href=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method href declaration for class a // Specifies the language of the linked document class a scalar a::setHreflang(| string scalar methodarg) { // Set the attribute hreflang for this class this.htmlhreflang = `" hreflang=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method hreflang declaration for class a // Specifies what media/device the linked document is optimized for class a scalar a::setMedia(| string scalar methodarg) { // Set the attribute media for this class this.htmlmedia = `" media=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method media declaration for class a // Not supported in HTML5. Use the global id attribute instead.Specifies the name of an anchor class a scalar a::setName(| string scalar methodarg) { // Set the attribute name for this class this.htmlname = `" name=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method name declaration for class a // Specifies the relationship between the current document and the linked document class a scalar a::setRel(| string scalar methodarg) { // Validate argument if (methodarg == "alternate" | methodarg == "author" | methodarg == "bookmark" | methodarg == "help" | methodarg == "license" | methodarg == "next" | methodarg == "nofollow" | methodarg == "noreferrer" | methodarg == "prefetch" | methodarg == "prev" | methodarg == "search" | methodarg == "tag") { // Set the attribute value this.htmlrel = `" rel=""' + methodarg + `"""' } // End IF Block for validated argument value // Return a copy of the object return(this) } // End of Method rel declaration for class a // Not supported in HTML5.Specifies the relationship between the linked document and the current document class a scalar a::setRev(| string scalar methodarg) { // Set the attribute rev for this class this.htmlrev = `" rev=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method rev declaration for class a // Not supported in HTML5.Specifies the shape of a link class a scalar a::setShape(| string scalar methodarg) { // Validate argument if (methodarg == "default" | methodarg == "rect" | methodarg == "circle" | methodarg == "poly") { // Set the attribute value this.htmlshape = `" shape=""' + methodarg + `"""' } // End IF Block for validated argument value // Return a copy of the object return(this) } // End of Method shape declaration for class a // Specifies where to open the linked document class a scalar a::setTarget(| string scalar methodarg) { // Validate argument if (methodarg == "_blank" | methodarg == "_parent" | methodarg == "_self" | methodarg == "_top" | methodarg == "framename") { // Set the attribute value this.htmltarget = `" target=""' + methodarg + `"""' } // End IF Block for validated argument value // Return a copy of the object return(this) } // End of Method target declaration for class a // Specifies the media type of the linked document class a scalar a::setType(| string scalar methodarg) { // Set the attribute type for this class this.htmltype = `" type=""' + methodarg + `"""' // Return a copy of the object return(this) } // End of Method type declaration for class a // Getter method for opening bracket string scalar a::getOpens() { // Returns the opening bracket/tag w/o > character to allow attributes return(this.opens) } // End of getter method for opens member of class a // Getter method for opening bracket closing character string scalar a::getOpene() { // Returns the closing character for the opening bracket return(this.opene) } // End of getter method for opene member of class a // Getter method for closing bracket string scalar a::getClose() { // Returns the closing bracket/tag return(this.close) } // End of getter method for close member of class a // Getter method for class arguments string scalar a::getClassArgs() { // Returns the class arguments that appear between the HTML tags return(this.classargs) } // End of getter method for class arguments member of class a // Getter method for charset member variable string scalar a::getCharset() { // Returns the charset variable return(this.htmlcharset) } // End of getter method for charset member of class a // Getter method for coords member variable string scalar a::getCoords() { // Returns the coords variable return(this.htmlcoords) } // End of getter method for coords member of class a // Getter method for download member variable string scalar a::getDownload() { // Returns the download variable return(this.htmldownload) } // End of getter method for download member of class a // Getter method for href member variable string scalar a::getHref() { // Returns the href variable return(this.htmlhref) } // End of getter method for href member of class a // Getter method for hreflang member variable string scalar a::getHreflang() { // Returns the hreflang variable return(this.htmlhreflang) } // End of getter method for hreflang member of class a // Getter method for media member variable string scalar a::getMedia() { // Returns the media variable return(this.htmlmedia) } // End of getter method for media member of class a // Getter method for name member variable string scalar a::getName() { // Returns the name variable return(this.htmlname) } // End of getter method for name member of class a // Getter method for rel member variable string scalar a::getRel() { // Returns the rel variable return(this.htmlrel) } // End of getter method for rel member of class a // Getter method for rev member variable string scalar a::getRev() { // Returns the rev variable return(this.htmlrev) } // End of getter method for rev member of class a // Getter method for shape member variable string scalar a::getShape() { // Returns the shape variable return(this.htmlshape) } // End of getter method for shape member of class a // Getter method for target member variable string scalar a::getTarget() { // Returns the target variable return(this.htmltarget) } // End of getter method for target member of class a // Getter method for type member variable string scalar a::getType() { // Returns the type variable return(this.htmltype) } // End of getter method for type member of class a // Get the HTML tag w/attributes and arguments string scalar a::print() { // Create local variables to piece together return string string scalar open, args, close // Create opening string open = getOpens() + getCharset() + getCoords() + getDownload() + getHref() + getHreflang() + getMedia() + getName() + getRel() + getRev() + getShape() + getTarget() + getType() + globalAttrs() + getOpene() // Get class arguments args = getClassArgs() // Get closing tag close = getClose() // Return the complete HTML string return(char((10)) + subinstr(open, " >", ">") + args + close + char((10))) } // End of print method for class a // End of Mata session end