How can I make window showmodaldialog work in chrome 37

Question

We have a huge web application where we use window showmodaldialog for alerts  confirmations and popups  Since Chrome version 37 this call has been disabled   Is there any quick workaround to make window showmodaldialog work in the latest version of Chrome   I am adding here a workaround for window showmodaldialog  although this is not a perfect workaround because this will not break the code execution as showmodaldialog was doing   instead this will open the popups   window showModalDialog   function  url  arg  feature            var opFeature   feature split              var featuresArray   new Array           if  document all               for  var i   0  i  lt  opFeature length - 1  i                      var f   opFeature i  split                      featuresArray f 0     f 1                                  else                for  var i   0  i  lt  opFeature length - 1  i                      var f   opFeature i  split                      featuresArray f 0  toString   trim   toLowerCase      f 1  toString   trim                                     var h    200px   w    400px   l    100px   t    100px   r    yes   c    yes   s    no          if  featuresArray  dialogheight    h   featuresArray  dialogheight            if  featuresArray  dialogwidth    w   featuresArray  dialogwidth           if  featuresArray  dialogleft    l   featuresArray  dialogleft            if  featuresArray  dialogtop    t   featuresArray  dialogtop            if  featuresArray  resizable    r   featuresArray  resizable           if  featuresArray  center    c   featuresArray  center          if  featuresArray  status    s   featuresArray  status            var modelFeature    height       h     width       w     left     l     top     t     model yes alwaysRaised yes      resizable      r     celter     c     status     s           var model   window open url      modelFeature  null           model dialogArguments   arg           Just put this code in the head section of page

User · Answer

I wouldn t try to temporarily enable a deprecated feature  According to the MDN documentation for showModalDialog  there s already a polyfill available on Github   I just used that to add windows showModalDialog to a legacy enterprise application as a userscript  but you can obviously also add it in the head of the HTML if you have access to the source

User · Answer

Create a cross browser ModalDialog  function  showModalDialog url  width  height  closeCallback        var modalDiv          dialogPrefix   window showModalDialog    dialog                unit    px           maximized   width     true    height     true          w   width    600          h   height    500          border   5          taskbar   40     windows taskbar         header   20          x          y       if  maximized            x   0          y   0          w   screen width          h   screen height        else           x   window screenX    screen width   2  -  w   2  -  border   2           y   window screenY    screen height   2  -  h   2  - taskbar - border             var features                  toolbar no                location no                directories no                status no                menubar no                scrollbars no                resizable no                copyhistory no                center yes               dialogPrefix    width     w   unit              dialogPrefix    height     h   unit              dialogPrefix    top     y   unit              dialogPrefix    left     x   unit                    showModal   function  context                if  context                    modalDiv   context document createElement  div                    modalDiv style cssText    top 0 right 0 bottom 0 left 0 position absolute z-index 50000                    modalDiv onclick   function                          if  context focus                            context focus                                              return false                                    window top document body appendChild modalDiv                                    removeModal   function                  if  modalDiv                    modalDiv onclick   null                  modalDiv parentNode removeChild modalDiv                   modalDiv   null                                   IE     if  window showModalDialog            window showModalDialog url  null  features join                       if  closeCallback                closeCallback                     Other browsers       else           var win   window open url      features join                if  maximized                win moveTo 0  0                         When charging the window          var onLoadFn   function                      showModal this                                 When you close the window              unLoadFn   function                      window clearInterval interval                   if  closeCallback                        closeCallback                                      removeModal                                  When you refresh the context that caught the window              beforeUnloadAndCloseFn   function                      try                       unLoadFn                                      finally                       win close                                              if  win                   Create a task to check if the window was closed              var interval   window setInterval function                      try                       if  win    null    win closed                            unLoadFn                                            catch  e                     500                if  win addEventListener                    win addEventListener  load   onLoadFn  false                 else                   win attachEvent  load   onLoadFn                              window addEventListener  beforeunload   beforeUnloadAndCloseFn  false

User · Answer

A very good  and working  javascript solution is provided here   https   github com niutech showModalDialog  I personnally used it  works like before for other browser and it creates a new dialog for chrome browser   Here is an example on how to use it    function handleReturnValue returnValue        if  returnValue     undefined               do what you want          var myCallback   function  returnValue       callback for chrome usage     handleReturnValue returnValue       var returnValue   window showModalDialog  someUrl    someDialogTitle    someDialogParams   myCallback    handleReturnValue returnValue      for other browsers except Chrome

User · Answer

The window returnValue property does not work directly when you are opening a window using window open   while it does work when you are using window showModalDialog     So in your case you have two options to achieve what you are trying to do   Option 1 - Using window showModalDialog    In your parent page   var answer   window showModalDialog  lt your page and other arguments gt   if  answer    1     do some thing with answer     and inside your child page you can make use of the window returnValue directly like  window returnValue    value that you want to return     showModalDialog halts the executions of the JavaScript until the dialog box is closed and can get a return value from the opened dialog box when its closing But the problem with showModalDialog is that it is not supported on many modern browsers  In contrast window open just opens a window asynchronously  User can access both the parent window and the opened window   And the JavaScript execution will continue immediately  Which bring us to Option 2  Option 2 - Using window open   In your parent page write a function that deals with opening of your dialog   function openDialog url  width  height  callback   if window showModalDialog       options    dialogHeight     height      dialogWidth     width      scroll no      var returnValue   window showModalDialog url this options       callback returnValue    else       options   toolbar no  directories no  location no  status yes  menubar no  resizable yes  scrollbars no  width     width      height     height           var childWindow   window open url    options             childWindow  on  unload  function                if  childWindow isOpened    null                    childWindow isOpened   1                            else                   if callback                       callback childWindow returnValue                                                      And whenever you want to use open a dialog  Write a callback that deals with the return value and pass it as a parameter to openDialog function  function callback returnValue   if returnValue       do something nice with the returnValue      And when calling the function   openDialog  lt your page gt    width px    height px   callbak     Check out an article on how to replace window showModalDialog with window open

User · Answer

This article  Why is window showModalDialog deprecated  What to use instead   seems to suggest that showModalDialog has been deprecated

User · Answer

function             window spawn   window spawn    function gen                function continuer verb  arg                    var result                  try                       result   generator verb  arg                     catch  err                        return Promise reject err                                     if  result done                        return result value                    else                       return Promise resolve result value  then onFulfilled  onRejected                                               var generator   gen                var onFulfilled   continuer bind continuer   next                var onRejected   continuer bind continuer   throw                return onFulfilled                       window showModalDialog   window showModalDialog    function url  arg  opt                url   url          URL of a dialog             arg   arg    null    arguments to a dialog             opt   opt     dialogWidth 300px dialogHeight 200px     options  dialogTop dialogLeft dialogWidth dialogHeight or CSS styles             var caller   showModalDialog caller toString                var dialog   document body appendChild document createElement  dialog                 dialog setAttribute  style   opt replace  dialog gi                    dialog innerHTML     lt a href     id  dialog-close  style  position  absolute  top  0  right  4px  font-size  20px  color   000  text-decoration  none  outline  none   gt  amp times  lt  a gt  lt iframe id  dialog-body  src      url      style  border  0  width  100   height  100    gt  lt  iframe gt                document getElementById  dialog-body   contentWindow dialogArguments   arg              document getElementById  dialog-close   addEventListener  click   function e                    e preventDefault                    dialog close                                dialog showModal                  if using yield             if caller indexOf  yield    gt   0                    return new Promise function resolve  reject                        dialog addEventListener  close   function                             var returnValue   document getElementById  dialog-body   contentWindow returnValue                          document body removeChild dialog                           resolve returnValue                                                                           if using eval             var isNext   false              var nextStmts   caller split   n   filter function stmt                    if isNext    stmt indexOf  showModalDialog     gt   0                      return isNext   true                  return false                              dialog addEventListener  close   function                     var returnValue   document getElementById  dialog-body   contentWindow returnValue                  document body removeChild dialog                   nextStmts 0    nextStmts 0  replace   window    showModalDialog       g  JSON stringify returnValue                    eval    n    nextStmts join   n                                 throw  Execution stopped until showModalDialog is closed                             Explanation  ------------   The best way to deal with showModalDialog for older application conversions is use to  https   github com niutech showModalDialog  inorder to work with show modal dialogs  and if modal dailog has ajax calls you need to create object and set the parameters of function to object and pass below   before that check for browser and set the useragent   example  agentStr   navigator userAgent  and then check for chrome  var objAcceptReject        create empty object and set the parameters to object and send to the other functions as dialog when opened in chrome breaks the functionality     function rejectClick index  transferId            objAcceptReject index index          objAcceptReject transferId transferId        agentStr   navigator userAgent                   var msie   ua indexOf  MSIE                      if  msie  gt  0     If Internet Explorer  return version number                                       var ret   window showModalDialog   abc jsp accept false  window  dialogHeight 175px dialogWidth 475px scroll no status no help no                            if  ret   true                             doSomeClick index                                            else if   agentStr indexOf  Chrome     gt - 1                   spawn function                          var ret   window showModalDialog   abcd jsp accept false  window  dialogHeight 175px dialogWidth 475px scroll no status no help no                            if  ret   true       create an object and store values in objects and send as parameters                         doSomeClick objAcceptReject index                                                                                 else                       var ret   window showModalDialog   xtz jsp accept false  window  dialogHeight 175px dialogWidth 475px scroll no status no help no                            if  ret   true                             doSomeClick index

User · Answer

I put the following javascript in the page header and it seems to work  It detects when the browser does not support showModalDialog and attaches a custom method that uses window open  parses the dialog specs  height  width  scroll  etc    centers on opener and sets focus back to the window  if focus is lost   Also  it uses the URL as the window name so that a new window is not opened each time  If you are passing window args to the modal you will need to write some additional code to fix that  The popup is not modal but at least you don t have to change a lot of code  Might need some work for your circumstances    lt script type  text javascript  gt       fix for deprecated method in Chrome 37   if   window showModalDialog         window showModalDialog   function  arg1  arg2  arg3             var w          var h          var resizable    no           var scroll    no           var status    no               get the modal specs         var mdattrs   arg3 split               for  i   0  i  lt  mdattrs length  i                 var mdattr   mdattrs i  split                   var n   mdattr 0              var v   mdattr 1              if  n    n   n trim   toLowerCase                 if  v    v   v trim   toLowerCase                  if  n     dialogheight                   h   v replace  px                     else if  n     dialogwidth                   w   v replace  px                     else if  n     resizable                   resizable   v               else if  n     scroll                   scroll   v               else if  n     status                   status   v                                  var left   window screenX    window outerWidth   2  -  w   2           var top   window screenY    window outerHeight   2  -  h   2           var targetWin   window open arg1  arg1   toolbar no  location no  directories no  status     status      menubar no  scrollbars     scroll      resizable     resizable      copyhistory no  width     w      height     h      top     top      left     left           targetWin focus                 lt  script gt

User · Answer

Yes  It s deprecated  Spent yesterday rewriting code to use Window open and PostMessage instead

User · Answer

From http   codecorner galanter net 2014 09 02 reenable-showmodaldialog-in-chrome    It s deprecated by design  You can re-enable showModalDialog support  but only temporarily     until May of 2015  Use this time to create alternative solutions   Here   s how to do it in Chrome for Windows  Open Registry Editor  regedit  and create following key   HKEY LOCAL MACHINE SOFTWARE Policies Google Chrome EnableDeprecatedWebPlatformFeatures  Under the EnableDeprecatedWebPlatformFeatures key create a string value with name 1 and value of ShowModalDialog EffectiveUntil20150430  To verify that the policy is enabled  visit chrome   policy URL   UPDATE  If the above didn   t work for you here   s another method to try    Download Chrome ADM templates from http   www chromium org administrators policy-templates Extract and import policy relevant to your locale  e g  windows adm en-US chrome adm  You can import either via gpedit mscor using these utilities on Home editions of windows  http   blogs technet com b fdcc archive 2008 05 07 lgpo-utilities aspx  Under    Adminstrative Templates    locate Google Chrome template and enable    Enable Deprecated Web Platform Feautes     Open the feature and add    ShowModalDialog EffectiveUntil20150430  key

User · Answer

The window showModalDialog is deprecated  Intent to Remove    window showModalDialog    Removing showModalDialog from the Web   platform        The latest plan is to land the showModalDialog removal   in Chromium 37  This means the feature will be gone in Opera 24 and   Chrome 37  both of which should be released in September

User · Answer

I use a polyfill that seem to do a good job   https   github com niutech showModalDialog  http   niutech github io showModalDialog demo html

[javascript] How can I make window.showmodaldialog work in chrome 37?

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