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- Overview
- Manipulating HTML Display controls programmatically
- Displaying information in an HTML Display control
- Getting the value of an HTML Display control
- Preventing the user from using a link in a page
- Associated WLanguage properties
- Properties specific to HTML Display controls
Manipulating HTML Display controls programmatically
The HTML Display control displays a web page in an application. Thus, in one line of code, without using an external browser, your WINDEV and WINDEV Mobile applications can display a page from a website. The HTML Display control can be manipulated directly in the code. To do so, use the variable of the HTML Display control in the code. This variable corresponds to the name of the HTML Display control. The variable type is a character string. This help page explains how to programmatically manipulate HTML Display controls. Manipulating HTML Display controls programmatically Displaying information in an HTML Display control To display information in an HTML Display control, simply assign a value For example: - Direct assignment:
HTM_WebPage = "http://www.windev.com"
- Assignment using a variable:
You can also use the Value or URL properties. Getting the value of an HTML Display control To get the content of an HTML Display control (the user can use the links in the page displayed in the control): - Simply assign a value. For example:
HTMLContent = HTM_HTMLDisplayControl
- Use the Value property.
Note: To get the source code of the page displayed in the HTML Display control, simply use the DisplayedValue property on the control: Info(HTM_WebPage.DisplayedValue)
Preventing the user from using a link in a page By default, in the HTML Display control, the user can use the various links in the page displayed in the control. To limit the use of these links, you can use the "Before loading HTML page" event. For the following example, let's assume that the list of authorized sites is contained in a WLanguage array. PROCEDURE ChangePage(sURL is string, sDestination is string)
ArrAuthorizedSites is array of 2 strings
ArrAuthorizedSites[1] = "windev.com"
ArrAuthorizedSites[2] = "google.com"
let sDomain = URLExtractPath(sURL, urlDomain)
IF ArraySeek(ArrAuthorizedSites, asLinearFirst, sDomain) = -1 THEN
ToastDisplay("Unauthorized site", toastShort, vaMiddle)
RETURN False
END
RETURN True
This code returns False if the site is not authorized and displays a toast. Associated WLanguage properties Properties specific to HTML Display controls The following properties are used to manage the characteristics of an HTML Display control in the code:
| | | Body | The Body property gets and sets the HTML body of an HTML Display control or an HTML Editor control. | | Document | The Document property is used to identify or modify the HTML document associated with an HTML Display control or an HTML Editor control. | | SecurityHtml | The SecurityHtml property gets and sets the status of the security mechanism of HTML Display and HTML Editor controls. | | URL | The URL property is used to:- Get the address associated with a control.
- Change the address associated with a control.
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