xExtractHtmLContent ( url, query, data, v-width, v_height, L_offset, T_offset, scalewidth, scaleheight )

Controls which part of a web page is displayed in the WebObject Viewer

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Nick Lightbody - Show more from this author
Deskspace Systems Limited
http://deskspace.com

Sample input:

xExtractHtmLContent ( Searches::za2Url; "q="; & Searches::xa2Address4GoogleMap ; Searches::zb5Width ; Searches::zb5Height; Searches::zb5WidthOffset ; Searches::zb5HeightOffset ; 1 ; 1 )

Sample output:

[html string]

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

//v3: 18/09/2009:NL: updated to the dynamic resizable version
//v2: 29/02/2009:NL: generalised further
//v1: 15/Nov/2008: NL: based on an idea from Chris Manton
// split address elements with commas(,)
// Don't put quotes around inputs in fields - only if direct in a parameter

Let(
   [url = "http://xxxYOUR-SOURCE-URLxxx etc" & "q=" & /*Address=*/
address ;
   virtual_page_width = (v_width-R_adj) * scalewidth;
   virtual_page_height = (v_height-B_adj) * scaleheight;
   left_offset = -L_offset;
   top_offset = -T_offset];

"data:text/html,<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01
Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">¶" &
"<html>¶" &
"<head>¶" &
"<style>¶" &
"BODY { overflow: hidden }¶" &
"IFRAME { " &
   "width: " & virtual_page_width & "px;" &
   "height: " & virtual_page_height & "px;" &
   "margin-left: " & left_offset & "px;" &
   "margin-top: " & top_offset & "px;" &
"}¶" &

"</style>¶" &
"<body>¶" &
"<iframe src='" & url & "'></iframe>¶" &
"</body>¶" &
"</html>"
)

Enables offsets to be used to hide elements in the source screen that you don't want to be viewed in the FileMaker Web Viewer - this is an amazingly useful function enabling you to precisely control what information - for example from a mapping site - you choose to display.
This updated version also resizes the source content as the web viewer is resized as the Filemaker Window is resized.

Comments

		Bruce Robertson Mar 2, 2009
Discovered a very interesting affect of this. If you have a negative offset, then clicking in the webviewer window produces a click in the associated region of the Filemaker layout. So by scrolling in a web viewer, I select and scroll text in a field that is above and to the left of the web viewer. Very weird.

		Nathan Taylor, Atlanta, GA Aug 31, 2012
I pasted the text above into a new custom function and when I click OK I get the following error: "The specified parameter can not be found" with "address" highlighted. Is "address" supposed to be another input parameter?

		David A. Taylor, Santa Clarita Aug 22, 2017
This CF seems to have typos in parameters and a number of missing parameters as well. Too bad because this would be quite useful.

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

xExtractHtmLContent ( url, query, data, v-width, v_height, L_offset, T_offset, scalewidth, scaleheight )

Comments

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