R Shiny Password Input

server.r

library(shiny)

shinyServer(function(input, output, session) {
  
  # Partial example
  output$meh <- renderPrint({
    print("Meh --- ")
    print(input$myTextInput )
    print(input$passInput )
  })
  
})

ui.r

library(shiny)


passwordTextInput <- function (inputId, label, value = "") {
  tagList(tags$label(label, `for` = inputId), tags$input(id = inputId, 
                                                         type = "password", value = value,class="passTextInput"))
}


code = HTML(" <script> var myTextInputBinding = new Shiny.InputBinding();
            $.extend(myTextInputBinding, {
            find: function(scope) {
            return $(scope).find('.passTextInput');
            },
            getId: function(el) {
            //return InputBinding.prototype.getId.call(this, el) || el.name;
            return $(el).attr('id')
            },
            getValue: function(el) {
            return el.value;
            },
            setValue: function(el, value) {
            el.value = value;
            },
            subscribe: function(el, callback) {
            $(el).on('keyup.textInputBinding input.textInputBinding', function(event) {
            callback()
            });
            
            },
            unsubscribe: function(el) {
            $(el).off('.myTextInputBinding');
            },
            receiveMessage: function(el, data) {
            if (data.hasOwnProperty('value'))
            this.setValue(el, data.value);
            
            if (data.hasOwnProperty('label'))
            $(el).parent().find('label[for=' + el.id + ']').text(data.label);
            
            $(el).trigger('change');
            },
            getState: function(el) {
            return {
            label: $(el).parent().find('label[for=' + el.id + ']').text(),
            value: el.value
            };
            },
            getRatePolicy: function() {
            return {
            policy: 'debounce',
            delay: 250
            };
            }
            });
            Shiny.inputBindings.register(myTextInputBinding, 'shiny.myTextInput');</script>")

shinyUI(
  basicPage(
    code
    ,textInput("myTextInput","My text input")    
    ,passwordTextInput("passInput","My pass input")    
    ,textOutput("meh")     
    ,HTML('<script src="https://gist.github.com/xiaodaigh/7162506.js"></script>')
))

I guess you can avoid copying the input binding code by extending the existing shiny.textInput binding, e.g.

var passwordBinding = $.extend({}, Shiny.inputBindings.bindingNames['shiny.textInput'].binding, {
  find: function(scope) {
    return $(scope).find('.passTextInput');
  }
})

Since the major thing you want to modify is the find method (there may be a couple other places that you need to modify as well).