hybrid web application : HTML5 + PB

[Kwai chang caine]

I have try this code in my home where they are no PROXY and this time that works
Again thanks to eddy

[ricardo]

You can code a web interface and send a javascript message and make it trigger something in PB.

[Kukulkan]

Hi,

I'm just playing around with Sciter, Electron and nw.js to find if I can replace the boring PB GUI by that (at least for the GUI and encapsulating existing PureBasic stuff in DLL/SO/DYLIB). So I found your example. This is impressively easy and seems a good solution to keep an eye on.

But here on my Linux system, it does not trigger any event (but also no error messages). I only the the windows events (like #PB_Event_DeactivateWindow) but nothing from within the GUI. I'm using PB 5.46 LTS (x64) on KDE Neon (based on Ubuntu 16.04).

Also, I remember discussions that the needed WebKitGtk component is no longer available on some modern Linux distros (Fedora, Manjaro). So people will not be able to use that solution there, right? Seems the PureBasic WegGadget is not working there at all.

[Shardik]

But here on my Linux system, it does not trigger any event (but also no error messages).

eddy's example has to be modified to work with Linux because in PureBasic's WebGadget the execution of JavaScript is possibly disabled. You have to insert the following code between "If CatchXML(#xml,.." and "SmartWindowRefresh(#win, #True)" in order to check whether script execution is disabled and to enable it if yes:

Code: Select all

If CatchXML(#xml, @xml$, StringByteLength(xml$)) And XMLStatus(#xml)=#PB_XML_Success And CreateDialog(#dialog) And OpenXMLDialog(#dialog, #xml, "win")
   CompilerIf #PB_Compiler_OS = #PB_OS_Linux
      #G_TYPE_INT = 6 << 2
      ImportC ""
        g_object_get_property(*Object.GObject, PropertyName.P-UTF8, *PropertyValue)
      EndImport
      ImportC "-lwebkitgtk-3.0"
         webkit_web_view_get_settings(*WebView)
         webkit_web_view_set_settings(*WebView, *WebkitSettings)
      EndImport
      Define WebkitSettings.I = webkit_web_view_get_settings(GadgetID(#web))
      Define Value.GValue
      If WebkitSettings
         Value\g_type = #G_TYPE_INT
         g_object_get_property(WebkitSettings, "enable-scripts", @Value)
         If g_value_get_int_(@Value) = 0
            g_value_set_int_(@Value, 1)
            g_object_set_property_(WebkitSettings, "enable-scripts", @Value)
            webkit_web_view_set_settings(GadgetID(#web), WebkitSettings)
         EndIf
      EndIf
   CompilerEndIf
   SmartWindowRefresh(#win, #True)

After the insertion of this CompilerIf..CompilerEndIf block the WebGadget events are also triggered on Linux and eddy's example works like a charm (tested successfully with Linux Mint 18.3 x64 PB 5.46 x64 with GTK3 in ASCII and Unicode mode) if for your distribution webkitgtk-3.0 is still available.

[HanPBF]

PWAs are on it's way to complete hopefully in 2019.
So all that very heavy electron/nw.js things get away.
node.js debugging is not so easy (WebStorm from Jetbrains does it).

Look how pgadmin is done -> web browser with client ("sitting" in systray).
It means: known, easy and powerful to use web ui and at the same time having access to local system.
pgadmin does it with AJAX-requests (slow, but hey, it's all local); I prefer web socket (more 'complex' but no/less latency).

Web socket server for PureBasic can be found here: viewtopic.php?f=12&t=61606.

[HanPBF]

https://vivaldi.com

This web browser can be extremly tailored until no browser ui remains.
Window then looks like a native application.