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/** global: GLSR, grecaptcha */ |
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;(function() { |
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'use strict'; |
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var Recaptcha = function( form ) { // Form object |
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this.Form = form; |
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this.addListeners = this.addListeners_; |
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this.execute = this.execute_; |
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this.reset = this.reset_; |
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}; |
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Recaptcha.prototype = { |
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/** @return void */ |
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addListeners_: function() { |
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var overlayEl = this.getOverlay_(); |
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if( overlayEl === -1 )return; |
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overlayEl.addEventListener( 'click', this.Form.enableButton ); |
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window.addEventListener( 'keyup', this.onKeyup_.bind( this, overlayEl )); |
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}, |
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/** @return void */ |
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execute_: function() { |
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var recaptchaId = this.getId_(); |
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if( recaptchaId !== -1 ) { |
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grecaptcha.execute( recaptchaId ); |
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return; |
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} |
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// recaptcha ID not found so pass through an error |
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this.Form.submitForm_( false ); |
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}, |
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/** @return string|int (-1) */ |
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getId_: function() { |
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return this.search_( function( value, id ) { |
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if( Object.prototype.toString.call( value ) !== '[object HTMLDivElement]' )return; |
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if( value.closest( 'form' ) === this.Form.form ) { |
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return id; |
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} |
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}); |
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}, |
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/** @return HTMLDivElement|int (-1) */ |
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getOverlay_: function() { |
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return this.search_( function( value ) { |
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if( Object.prototype.toString.call( value ) !== '[object Object]' )return; |
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for( var obj in value) { |
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if( !value.hasOwnProperty( obj ) || Object.prototype.toString.call( value[obj] ) !== '[object HTMLDivElement]' )continue; |
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if( value[obj].className === '' ) { |
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return value[obj].firstChild; |
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} |
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} |
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return false; |
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}); |
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}, |
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/** @return void */ |
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onKeyup_: function( ev ) { // KeyboardEvent |
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if( ev.keyCode !== 27 )return; |
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this.Form.enableButton(); |
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this.removeListeners_( ev.target ); |
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}, |
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/** @return void */ |
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removeListeners_: function( overlayEl ) { // HTMLDivElement |
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overlayEl.removeEventListener( 'click', this.Form.enableButton ); |
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window.removeEventListener( 'keyup', this.onKeyup_ ); |
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}, |
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/** @return void */ |
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reset_: function() { |
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var recaptchaId = this.getId_(); |
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if( recaptchaId !== -1 ) { |
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grecaptcha.reset( recaptchaId ); |
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} |
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}, |
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/** @return mixed|int (-1) */ |
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search_: function( callback ) { // function |
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var result = -1; |
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if( window.hasOwnProperty( '___grecaptcha_cfg' )) { |
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var clients = window.___grecaptcha_cfg.clients; |
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var i, key; |
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for( i in clients ) { |
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for( key in clients[i] ) { |
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if( !( result = callback( clients[i][key], i ).bind( this )))continue; |
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return result; |
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} |
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} |
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} |
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return result; |
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}, |
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}; |
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GLSR.Recaptcha = Recaptcha; |
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})(); |
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This check looks for functions where a
return
statement is found in some execution paths, but not in all.Consider this little piece of code
The function
isBig
will only return a specific value when its parameter is bigger than 5000. In any other case, it will implicitly returnundefined
.This behaviour may not be what you had intended. In any case, you can add a
return undefined
to the other execution path to make the return value explicit.