typewrite: function()

in src/main/jbake/assets/js/typed.js [129:240]
69 lines of code
17 McCabe index (conditional complexity)

        typewrite: function(curString, curStrPos) {
            // exit when stopped
            if (this.stop === true) {
                return;
            }

            // varying values for setTimeout during typing
            // can't be global since number changes each time loop is executed
            var humanize = Math.round(Math.random() * (100 - 30)) + this.typeSpeed;
            var self = this;

            // ------------- optional ------------- //
            // backpaces a certain string faster
            // ------------------------------------ //
            // if (self.arrayPos == 1){
            //  self.backDelay = 50;
            // }
            // else{ self.backDelay = 500; }

            // contain typing function in a timeout humanize'd delay
            self.timeout = setTimeout(function() {
                // check for an escape character before a pause value
                // format: \^\d+ .. eg: ^1000 .. should be able to print the ^ too using ^^
                // single ^ are removed from string
                var charPause = 0;
                var substr = curString.substr(curStrPos);
                if (substr.charAt(0) === '^') {
                    var skip = 1; // skip atleast 1
                    if (/^\^\d+/.test(substr)) {
                        substr = /\d+/.exec(substr)[0];
                        skip += substr.length;
                        charPause = parseInt(substr);
                    }

                    // strip out the escape character and pause value so they're not printed
                    curString = curString.substring(0, curStrPos) + curString.substring(curStrPos + skip);
                }

                if (self.contentType === 'html') {
                    // skip over html tags while typing
                    var curChar = curString.substr(curStrPos).charAt(0)
                    if (curChar === '<' || curChar === '&') {
                        var tag = '';
                        var endTag = '';
                        if (curChar === '<') {
                            endTag = '>'
                        } else {
                            endTag = ';'
                        }
                        while (curString.substr(curStrPos).charAt(0) !== endTag) {
                            tag += curString.substr(curStrPos).charAt(0);
                            curStrPos++;
                        }
                        curStrPos++;
                        tag += endTag;
                    }
                }

                // timeout for any pause after a character
                self.timeout = setTimeout(function() {
                    if (curStrPos === curString.length) {
                        // fires callback function
                        self.options.onStringTyped(self.arrayPos);

                        // is this the final string
                        if (self.arrayPos === self.strings.length - 1) {
                            // animation that occurs on the last typed string
                            self.options.callback();

                            self.curLoop++;

                            // quit if we wont loop back
                            if (self.loop === false || self.curLoop === self.loopCount)
                                return;
                        }

                        self.timeout = setTimeout(function() {
                            self.backspace(curString, curStrPos);
                        }, self.backDelay);
                    } else {

                        /* call before functions if applicable */
                        if (curStrPos === 0)
                            self.options.preStringTyped(self.arrayPos);

                        // start typing each new char into existing string
                        // curString: arg, self.el.html: original text inside element
                        var nextString = curString.substr(0, curStrPos + 1);
                        if (self.attr) {
                            self.el.attr(self.attr, nextString);
                        } else {
                            if (self.isInput) {
                                self.el.val(nextString);
                            } else if (self.contentType === 'html') {
                                self.el.html(nextString);
                            } else {
                                self.el.text(nextString);
                            }
                        }

                        // add characters one by one
                        curStrPos++;
                        // loop the function
                        self.typewrite(curString, curStrPos);
                    }
                    // end of character pause
                }, charPause);

                // humanized value for typing
            }, humanize);

        }