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htmloptgroup.mata
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// Switch to Mata interpreter/compiler
mata:
// Drops class object if it already exists
// mata drop optgroup()
// Definition of HTML Tag optgroup Mata Class
// Defines a group of related options in a drop-down list// Information retrieved from http://www.w3schools.com/tags/tag_optgroup.asp
class optgroup extends htmlglobal {
// Define private member variables
private:
// Static/final variables
static string scalar opens, opene, close
// String scalar attributes
string scalar htmldisabled, htmllabel
// 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 optgroup scalar setClassArgs(), setDisabled(), setLabel()
// Getter methods
string scalar getOpens(), getOpene(), getClose(), print(), getClassArgs(), getDisabled(), getLabel()
} // End of class declaration
// Class constructor method declaration
void optgroup::new() {
// Defines the start of the opening tag for the class
this.opens = "<optgroup"
// Defines the end of the opening tag for the class
this.opene = ">"
// Defines the closing tag for the class
this.close = "</optgroup>"
} // End of class constructor method definition
// Setter method for class arguments (appear between HTML tags)
class optgroup scalar optgroup::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 an option-group should be disabled
class optgroup scalar optgroup::setDisabled(| string scalar methodarg) {
// Set the attribute disabled for this class
this.htmldisabled = `" disabled=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method disabled declaration for class optgroup
// Specifies a label for an option-group
class optgroup scalar optgroup::setLabel(| string scalar methodarg) {
// Set the attribute label for this class
this.htmllabel = `" label=""' + methodarg + `"""'
// Return a copy of the object
return(this)
} // End of Method label declaration for class optgroup
// Getter method for opening bracket
string scalar optgroup::getOpens() {
// Returns the opening bracket/tag w/o > character to allow attributes
return(this.opens)
} // End of getter method for opens member of class optgroup
// Getter method for opening bracket closing character
string scalar optgroup::getOpene() {
// Returns the closing character for the opening bracket
return(this.opene)
} // End of getter method for opene member of class optgroup
// Getter method for closing bracket
string scalar optgroup::getClose() {
// Returns the closing bracket/tag
return(this.close)
} // End of getter method for close member of class optgroup
// Getter method for class arguments
string scalar optgroup::getClassArgs() {
// Returns the class arguments that appear between the HTML tags
return(this.classargs)
} // End of getter method for class arguments member of class optgroup
// Getter method for disabled member variable
string scalar optgroup::getDisabled() {
// Returns the disabled variable
return(this.htmldisabled)
} // End of getter method for disabled member of class optgroup
// Getter method for label member variable
string scalar optgroup::getLabel() {
// Returns the label variable
return(this.htmllabel)
} // End of getter method for label member of class optgroup
// Get the HTML tag w/attributes and arguments
string scalar optgroup::print() {
// Create local variables to piece together return string
string scalar open, args, close
// Create opening string
open = getOpens() + getDisabled() + getLabel() + 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 optgroup
// End of Mata session
end