Function registerKeyEvent

js/impress.js:2819–2840

( keyCodes, handler, window )

        };

        var registerKeyEvent = function( keyCodes, handler, window ) {
            if ( window === undefined ) {
                window = consoleWindow;
            }

            // Prevent default keydown action when one of supported key is pressed
            window.document.addEventListener( 'keydown', function( event ) {
                if ( !event.ctrlKey && !event.altKey && !event.shiftKey && !event.metaKey &&
                     keyCodes.indexOf( event.keyCode ) !== -1 ) {
                    event.preventDefault();
                }
            }, false );

            // Trigger impress action on keyup
            window.document.addEventListener( 'keyup', function( event ) {
                if ( !event.ctrlKey && !event.altKey && !event.shiftKey && !event.metaKey &&
                     keyCodes.indexOf( event.keyCode ) !== -1 ) {
                        handler();
                        event.preventDefault();
                }
            }, false );
        };

        var consoleOnLoad = function() {
                var slideView = consoleWindow.document.getElementById( 'slideView' );