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gypsyjoe11
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Sad Face appears after fromJson
Mar 18th, 2021 at 6:12pm
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I'm having a weird issue where everything was working fine and then after every return trip from the server right after re-drawing the diagram map the map freezes and I get a sad face icon in the upper left.

I happens on the line sender.fromJson(result.diagramToJson);

function onNodeModified(sender, args) {
     $.ajax({
           type: "POST",
                 url: "@Url.Action("SwimlaneModified", "Swimlanes", new { area = "Admin"})",
                 data: { diagramJson: sender.toJson() },
                 dataType: 'json',
                 cache: false,
                 success: function (result) {
                       
                       hideProgressIndicator();
                       if (result.success) {
                             //Redisplay diagram
                             sender.fromJson(result.diagramToJson);
                       } else {
                             buildPopupDanger(result.message);
                       }
                       return;
                 }
     });
}
  

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Slavcho
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Re: Sad Face appears after fromJson
Reply #1 - Mar 19th, 2021 at 7:03am
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The diagram control does not contain such icon, maybe it's the browser showing it or another library you are using. Does the developer console show any errors or warnings?
  
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gypsyjoe11
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Re: Sad Face appears after fromJson
Reply #2 - Mar 19th, 2021 at 5:03pm
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No errors in the developer console. If I set a breakpoint everything looks fine until it executes fromJson.

I wonder if it's a memory related? I'm still trying to track it down. Seems to happen after I've been using the map for awhile.
« Last Edit: Mar 19th, 2021 at 8:18pm by gypsyjoe11 »  
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Slavcho
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Re: Sad Face appears after fromJson
Reply #3 - Mar 19th, 2021 at 5:16pm
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Please attach the json file.
  
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Slavcho
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Re: Sad Face appears after fromJson
Reply #4 - Mar 22nd, 2021 at 7:35am
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If you are still using v3.2.2 mentioned in previous thread, it's possible you've reached the max size of canvas element supported by browser. Enabling DiagramView.VirtualScroll should fix that. In newer versions it's enabled by default.

Regards,
Slavcho
« Last Edit: Mar 22nd, 2021 at 9:18am by Slavcho »  
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Slavcho
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Re: Sad Face appears after fromJson
Reply #5 - Mar 25th, 2021 at 3:03pm
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We've confirmed the sad face is shown when canvas element gets too large. So setting DiagramView.VirtualScroll in your older version or moving to v3.3+ should fix it.

Regards,
Slavcho
  
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