Problem with time slide and WebView2 Navigate2()

[claudiof2023]

Hi,

The Microsoft Edge WebView2 Navigate2() method does not work with the time slide feature of the new map viewer.

This can be tested with a native application with embedded web content, using for example the FormWebView class. The steps below are only meant for a quick illustration of the problem.

Steps:

1. Step through the following C# code to open a FormWebView: auxView = new FormWebView();

2. Enable representation of data time stamps (see attachment 2-time_slide.png)

3. Step through the following C# code to navigate to new coordinates: decimal north = 1250100.0; decimal east = 2645300.0; FormWebView auxView; auxView.Navigate2(east, north);

4. The Form content does not slide to the new coordinate. It does without time slide.

[pakb]

what are you doing in the function auxView.Navigate2(east, north);? the webapp should react to changes if they occur in the hash query.

Meaning if you change https://map.geo.admin.ch?center=x,y to https://map.geo.admin.ch?center=a,b it won't update but reload the entire app.

On the other hand if you do https://map.geo.admin.ch/#/map?center=x,y to https://map.geo.admin.ch/#/map?center=a,b it should update the map accordingly (this /#/map is very important, as it tells our Vue Router that you are on the map view, and that the parameters of this view have changed)

[claudiof2023]

Hi Pascal,

Sure, the code is as follows:

public void Navigate2(decimal east, decimal north) { this.SetCenter(east, north); int pos1 = this.url.IndexOf("&center=");

        if (pos1 > 0)
        {
            int pos2 = this.url.IndexOf("&", pos1 + 8);

            if (pos2 > 0)
            {
                string url2 = this.url.Substring(0, pos1);
                url2 += "&center=" + east.ToString() + "," + north.ToString();
                url2 += this.url.Substring(pos2);
                this.url = url2;
            }
        }

        this.webView.CoreWebView2.Navigate(this.url);
        // this.webView.Source = new UriBuilder(this.url).Uri;

        if (!this.webFormDictonary.ContainsKey(layer))
            this.webFormDictonary[this.layer] = this;
    }

    public void SetCenter(decimal east, decimal north)
    {
        this.current_north = north;
        this.current_east = east;
        this.current_wgs84[0] = (Double) this.current_east;
        this.current_wgs84[1] = (Double) this.current_north;

        Reproject.ReprojectPoints(
            this.current_wgs84,
            new[] { 0d },
            ProjectionInfo.FromEpsgCode(2056),
            ProjectionInfo.FromEpsgCode(4326),
            0,
            1);
    }

I tried to change the source Url directly as you can see in the commented part, but the problem is the same as with the Navigate() method: if the time slide is activated (see snapshot in Issue), the content does not recenter to the new coordinates.

Example of url actually processed by this code: From: "https://map.geo.admin.ch/#/map?&z=12&bgLayer=ch.swisstopo.pixelkarte-farbe&layers=ch.swisstopo.swissimage-product@year=2019;ch.bfs.arealstatistik@year=2018&layers_opacity=1,0.75&lang=de&center=2645300.0002,1249999.9995&crosshair=cross"

To: "https://map.geo.admin.ch/#/map?&z=12&bgLayer=ch.swisstopo.pixelkarte-farbe&layers=ch.swisstopo.swissimage-product@year=2019;ch.bfs.arealstatistik@year=2018&layers_opacity=1,0.75&lang=de&center=2645400.0002,1249999.9995&crosshair=cross"

Best regards, Claudio

[pakb]

To be double sure it's not the issue, you might want to check for the position of either ?center= and &center (in case center is the first parameter, it will have a question mark instead of &)

If that doesn't fix the issue, I don't really know how I could debug this. We typically use standard browsers for our tests (Chrome, Firefox, Edge) and didn't have this issue at all

[claudiof2023]

Thanks for the hint on the position of center, but it’s handled ok and is not the cause.

Thanks for looking into the problem. I’ll come back to you if I find anything new.

Best regards, Claudio

De : Pascal Barth @.> Envoyé : mercredi, 2 octobre 2024 11:28 À : geoadmin/web-mapviewer @.> Cc : Facchinetti Claudio BFS @.>; Author @.> Objet : Re: [geoadmin/web-mapviewer] Problem with time slide and WebView2 Navigate2() (Issue #1082)

To be double sure it's not the issue, you might want to check for the position of either ?center= and &center (in case center is the first parameter, it will have a question mark instead of &)

If that doesn't fix the issue, I don't really know how I could debug this. We typically use standard browsers for our tests (Chrome, Firefox, Edge) and didn't have this issue at all

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