Is Opera 10 a supported browser?

[iperdomo]

Hi all,

I've been testing an small script that just renders a "layout" of an application. It works just fine in most of the browsers but not in Opera. I have tested it in the following browsers:
- On Windows:
-- Firefox 3.6
-- Google Chrome 4.1.249.1036
-- Internet Explorer 8
-- Safari 4.0.4
-- Opera 10.51 (*)

- On Linux:
- Firefox 3.6
- Chromium 5.0.307.11
- Opera 10.10 - Build 4742 (*)

(*) In both versions of Opera 10, on Windows and Linux the script fails.

Attached you'll find the index.html page with the script. I have set the creation of the application parts in the load event, based on a suggestion of the isc Log window.

Reading the release notes of SmartClient 7.0rc2 [1] it says "Opera Beta". What does that mean?

I enabled the Exception stack trace in Opera. The problem is on line 749 of the minified version of ISC_Core.js, it seems in that is in the Browser detection part (but I'm not sure).

Inline script thread
Error:
name: TypeError
message: Statement on line 749: Cannot convert undefined or null to Object
stacktrace:   Line 749 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    var _7=isc.Browser.isIE&&isc.Browser.version>6;var _8=_1.callee;var _9=[];var _10=true;if(_3==null)_3=Number.MAX_VALUE;var _11=0;while(_8!=null&&_1!=null&&_11<_3){if(_7){if(_9.contains(_8)){_5.add("    ** recursed on "+isc.Func.getName(_8,true));break}
  Line 1759 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    this.logWarn("negative or zero area: height: "+this.getHeight()+", width: "+this.getWidth()+", refusing to draw"+this.getStackTrace(),"drawing");return false}
  Line 1769 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    function(_1){if(isc.$cv)arguments.$cw=this;if(!this.readyToDraw())return this;if(this.overflow==isc.Canvas.AUTO)this.getTabIndex();if(this.logIsInfoEnabled(this.$n2)){this.logInfo("draw(): drawing "+this.Class+(this.parentElement?" with parent: "+this.parentElement:"")+(!isc.Page.isLoaded()?" before page load":"")+(this.logIsDebugEnabled(this.$n2)?this.getStackTrace():""),this.$n2)}
  Line 29 of inline#2 script in file://localhost/home/iperdomo/tmp/opera-test/index.html: In function setup
      appObj.layout.draw();
  Line 32 of inline#2 script in file://localhost/home/iperdomo/tmp/opera-test/index.html
    setup(myApp);
Event thread: load
Error:
name: TypeError
message: Statement on line 749: Cannot convert undefined or null to Object
stacktrace:   Line 749 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    var _7=isc.Browser.isIE&&isc.Browser.version>6;var _8=_1.callee;var _9=[];var _10=true;if(_3==null)_3=Number.MAX_VALUE;var _11=0;while(_8!=null&&_1!=null&&_11<_3){if(_7){if(_9.contains(_8)){_5.add("    ** recursed on "+isc.Func.getName(_8,true));break}
  Line 1759 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    this.logWarn("negative or zero area: height: "+this.getHeight()+", width: "+this.getWidth()+", refusing to draw"+this.getStackTrace(),"drawing");return false}
  Line 1769 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    function(_1){if(isc.$cv)arguments.$cw=this;if(!this.readyToDraw())return this;if(this.overflow==isc.Canvas.AUTO)this.getTabIndex();if(this.logIsInfoEnabled(this.$n2)){this.logInfo("draw(): drawing "+this.Class+(this.parentElement?" with parent: "+this.parentElement:"")+(!isc.Page.isLoaded()?" before page load":"")+(this.logIsDebugEnabled(this.$n2)?this.getStackTrace():""),this.$n2)}
  Line 29 of inline#2 script in file://localhost/home/iperdomo/tmp/opera-test/index.html: In function setup
      appObj.layout.draw();
  Line 2 of eval script 
    ){setup(myApp);
  Line 1084 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    if(isc.isA.Function(_9.action)){_6=(_9.action(_1,_3)!=false)}else{var _10=_9.action;if(_10.destroyed){_4[i]=null;continue}
  Line 1110 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    return(isc.Page.handleEvent(null,isc.EH.LOAD)!=false)}else{try{return(isc.Page.handleEvent(null,isc.EH.LOAD)!=false)}catch(e){isc.Log.$am(e);throw e;}}}
  ...  Line 1403 of linked script file://localhost/home/iperdomo/tmp/opera-test/isomorphic/system/modules/ISC_Core.js
    if(isc.Browser.isIE)_2=this.getWindow().event;this.$h1(this.$jy[_2.type]||_2.type);if(!isc.Browser.isMoz){var _3=_1.call(this,_2)}else{try{var _3=_1.call(this,_2)}catch(e){isc.Log.$am(e);throw e;}}
  Line 2 of eval script 
    ){var returnVal=arguments.callee.$ch.isc.EH.dispatch(arguments.callee.$j2,event);if(returnVal==false)event.preventDefault();else if(returnVal==isc.EH.STOP_BUBBLING)event.stopPropogation();return returnVal;
  ...

Any ideas on how to solve the problem? Will SmartClient version 7.0 "final" officially support Opera?

Any ideas on how I can help to solve this issue?

[1] http://www.smartclient.com/docs/7.0rc2/docs/readme.html

Best Regards,

Iván

[iperdomo]

Hi again,

I wanted to know what's going on, so I set up the same code but this not using the compressed/minimized version of SmartClient, but the one in smartclientSDK/source/client.

Using Opera's Dragonfly [1] dev-tool I found the the following:

* My canvas (VLayout) gets a zero height, so on line 2943 of Canvas.js a logWarn() call is made. Inside the logWarn call there is a getStackTrace, which fails on debug.js - line 204. This script has the following sentence:

var func = args.callee;

But args is undefined because the getStackTrace() don't use any parameter. In fact none of the getStackTrace calls in Canvas.js use any parameter.

On debug.js the getStackTrace signature is:

getStackTrace : function (args, ignoreLevels, maxLevels) { ... }

args is undefined so Opera is more strict about it and that's why I get the "Cannot convert undefined or null to Object" error message.

I made a small fix to see if args is undefined and now I don't get the error message, but still I can't see my canvas in the page. The object is created but with 0 height. I have set the height to "100%" but in some part of the init() process it gets a value of 0.

Any ideas on this topic?

[1] http://dev.opera.com/articles/view/introduction-to-opera-dragonfly/

Best Regards,

Iván

[Chris_A_Wood]

Is Opera a supported browser?

I had a similar problem. Changing the html page headers from

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

to

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
    "http://www.w3.org/TR/html4/strict.dtd"

seemed to work, though I've only tested on OS X.


Best Regards

Chris