What is Webview2?

WebView2 allows for the embedding of an Edge browser within a Windows applications meaning webpages can be viewed within the application frame.

Visual LANSA V16 sees the introduction of a new Primitive for Webview2 called PRIM_WEBV, this allows for a modern browser to be embedded into a users VL Windows application with access to the browser controls to build your own UI around it.

Using WebView2

Component Definition

The Visual LANSA Primitive for WebView2 allows for standard controls of a web page (Navigate, back, forward, stop and reload) and access to the Navigation starting and completing events from the browser to help control your UI.

     Define_Com Class(#PRIM_WEBV) Name(#WebView) Parent(#COM_OWNER) Displayposition(1) Tabposition(1) Height(890) Top(116) Left(0) Width(1659) Defaulturl('https://docs.lansa.com/15/en/')

Properties

CanNavigateBack

Returns a Boolean as to whether the browser can navigate back in history

CanNavigateForward

Returns a Boolean as to whether the browser can navigate forward in history

DocumentTitle

Returns a string that is the title of the current html document

DefaultURL

sets the URL which will load once the webview is initialized.

Source

returns the current URL in the Webview component.

...

     Mthroutine Name(ToggleControls)

        #BTN_Back.Enabled := #WebView.CanNavigateBack
        #BTN_Forward.Enabled := #WebView.CanNavigateForward
        #URL := #WebView.Source
        #COM_OWNER.Caption := #WebView.DocumentTitle

     Endroutine

Methods

NavigateBack

Navigates back in history

...

   #WebView.Stop

Endroutine

Events

• NavigationComplete – Fired when the loading of a webpage has finished

...

   #COM_SELF.ToggleControls

Endroutine

Sample

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