// Switch to Mata interpreter/compiler
mata:
// Drops class object if it already exists
// mata drop video()
// Definition of HTML Tag video Mata Class
// Defines a video or movie// Information retrieved from http://www.w3schools.com/tags/tag_video.asp
class video extends htmlglobal {
// Define private member variables
private:
// Static/final variables
static string scalar opens, opene, close
// String scalar attributes
string scalar htmlautoplay, htmlcontrols, htmlheight, htmlloop, htmlmuted, htmlposter, htmlpreload, htmlsrc, htmlwidth
// 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 video scalar setClassArgs(), setAutoplay(), setControls(), setHeight(), setLoop(), setMuted(), setPoster(), setPreload(), setSrc(), setWidth()
// Getter methods
string scalar getOpens(), getOpene(), getClose(), print(), getClassArgs(), getAutoplay(), getControls(), getHeight(), getLoop(), getMuted(), getPoster(), getPreload(), getSrc(), getWidth()
} // End of class declaration
// Class constructor method declaration
void video::new() {
// Defines the start of the opening tag for the class
this.opens = "<video"
// Defines the end of the opening tag for the class
this.opene = ">"
// Defines the closing tag for the class
this.close = "</video>"
} // End of class constructor method definition
// Setter method for class arguments (appear between HTML tags)
class video scalar video::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
// Specifies that the video will start playing as soon as it is ready
class video scalar video::setAutoplay(| string scalar methodarg) {
// Set the attribute autoplay for this class
this.htmlautoplay = `" autoplay=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method autoplay declaration for class video
// Specifies that video controls should be displayed (such as a play/pause button etc).
class video scalar video::setControls(| string scalar methodarg) {
// Set the attribute controls for this class
this.htmlcontrols = `" controls=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method controls declaration for class video
// Sets the height of the video player
class video scalar video::setHeight(| string scalar methodarg) {
// Set the attribute height for this class
this.htmlheight = `" height=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method height declaration for class video
// Specifies that the video will start over again, every time it is finished
class video scalar video::setLoop(| string scalar methodarg) {
// Set the attribute loop for this class
this.htmlloop = `" loop=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method loop declaration for class video
// Specifies that the audio output of the video should be muted
class video scalar video::setMuted(| string scalar methodarg) {
// Set the attribute muted for this class
this.htmlmuted = `" muted=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method muted declaration for class video
// Specifies an image to be shown while the video is downloading, or until the user hits the play button
class video scalar video::setPoster(| string scalar methodarg) {
// Set the attribute poster for this class
this.htmlposter = `" poster=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method poster declaration for class video
// Specifies if and how the author thinks the video should be loaded when the page loads
class video scalar video::setPreload(| string scalar methodarg) {
// Validate argument
if (methodarg == "auto" | methodarg == "metadata" | methodarg == "none") {
// Set the attribute value
this.htmlpreload = `" preload=""' + methodarg + `"""'
} // End IF Block for validated argument value
// Return a copy of the object
return(this)
} // End of Method preload declaration for class video
// Specifies the URL of the video file
class video scalar video::setSrc(| string scalar methodarg) {
// Set the attribute src for this class
this.htmlsrc = `" src=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method src declaration for class video
// Sets the width of the video player
class video scalar video::setWidth(| string scalar methodarg) {
// Set the attribute width for this class
this.htmlwidth = `" width=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method width declaration for class video
// Getter method for opening bracket
string scalar video::getOpens() {
// Returns the opening bracket/tag w/o > character to allow attributes
return(this.opens)
} // End of getter method for opens member of class video
// Getter method for opening bracket closing character
string scalar video::getOpene() {
// Returns the closing character for the opening bracket
return(this.opene)
} // End of getter method for opene member of class video
// Getter method for closing bracket
string scalar video::getClose() {
// Returns the closing bracket/tag
return(this.close)
} // End of getter method for close member of class video
// Getter method for class arguments
string scalar video::getClassArgs() {
// Returns the class arguments that appear between the HTML tags
return(this.classargs)
} // End of getter method for class arguments member of class video
// Getter method for autoplay member variable
string scalar video::getAutoplay() {
// Returns the autoplay variable
return(this.htmlautoplay)
} // End of getter method for autoplay member of class video
// Getter method for controls member variable
string scalar video::getControls() {
// Returns the controls variable
return(this.htmlcontrols)
} // End of getter method for controls member of class video
// Getter method for height member variable
string scalar video::getHeight() {
// Returns the height variable
return(this.htmlheight)
} // End of getter method for height member of class video
// Getter method for loop member variable
string scalar video::getLoop() {
// Returns the loop variable
return(this.htmlloop)
} // End of getter method for loop member of class video
// Getter method for muted member variable
string scalar video::getMuted() {
// Returns the muted variable
return(this.htmlmuted)
} // End of getter method for muted member of class video
// Getter method for poster member variable
string scalar video::getPoster() {
// Returns the poster variable
return(this.htmlposter)
} // End of getter method for poster member of class video
// Getter method for preload member variable
string scalar video::getPreload() {
// Returns the preload variable
return(this.htmlpreload)
} // End of getter method for preload member of class video
// Getter method for src member variable
string scalar video::getSrc() {
// Returns the src variable
return(this.htmlsrc)
} // End of getter method for src member of class video
// Getter method for width member variable
string scalar video::getWidth() {
// Returns the width variable
return(this.htmlwidth)
} // End of getter method for width member of class video
// Get the HTML tag w/attributes and arguments
string scalar video::print() {
// Create local variables to piece together return string
string scalar open, args, close
// Create opening string
open = getOpens() + getAutoplay() + getControls() + getHeight() + getLoop() + getMuted() + getPoster() + getPreload() + getSrc() + getWidth() + 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 video
// End of Mata session
end