revBrowserCallScript

[Dixie]

Hi...

Has anyone got any experience of using 'revBrowserCallScript' ... all I can get out of it is :-

Code: Select all

global browserID

on mouseUp
   get revBrowserCallScript (browserID, "codeAddress" )
   put the result
end mouseUp

execution error at line n/a () near "-[WebUndefined cStringUsingEncoding:]: unrecognized selector sent to instance 0x17064190"

I would really like to be able to call a javaScript function in the revBrowser. Any help appreciated.

thanks...

Dixie

[Mark]

Hi Dixie,

You need to replace your parameter "codeAddress" with valid JavaScript syntax, for example "codeAddress();".

Best,

Mark

[Dixie]

Mark...

Thanks for the reply... unfortunately, using your suggestion does not work

get revBrowserCallScript (browserID, "codeAddress();" )

be well,

Dixie

[GSPearson]

Any update to this with code samples. I am using LC 7.0 and the project I am working on I would love to do this to turn on and off a map layer that has school buildings locations within it. When I call this the error I get is

Button :Button": execution error at line /na/ (External; handler: exception) neqar "unknown browser if"

Code: Select all

global gBrowserID
on mouseUp
get revBrowserCallScript(gBrowserID, DisplayAlert(), "Testing from Livecode")
end mouseUp

gBrowserID has an value of 11011524

The card that draws the map defines this value that gBrowserId has and within the button I get the same value for gBrowserID


Any Ideas?

[Mark]

Hi,

Is DisplayAlert() a JavaScript function? Try putting it in quotes.

Kind regards,

Mark

[GSPearson]

Yes on the page within the web server has

Code: Select all

<script type="text/javascript">
     function DisplayAlert(txt) {
          alert(txt);
     }
</script>

When I put the DisplayAlert() within quotes, The error message I get is

"unknown browser id"

However in my variables tab of editor, gBrowserID has a value of 5441464. This button which calls the function through revBrowserCallScript and the gBrowserID is set within the openCard script.

[Mark]

Hi,

5441464 is a very high number for a browser ID created with revBrowser. Are you sure that gBrowseID has been declared as a global variable? Can you check where this number comes from exactly?

Kind regards,

Mark

[GSPearson]

On the Map Card here is the script

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global gScreenSize, gScreenCenterLoc, gResizeStackHorizontal, gResizeStackVertical, gDeviceHasNetworkConnection, gDeviceHasInternetConnection
global gServerName, gMainApplicationArchiveFilename, gMainApplicationFilename, gSplashAppVersion, gApplicationPrefsDir, gProgramAppUpdateArray
global gMainAppDownload, gMainAppExtracted, gOrgAvailableMarketsArray, gOrgAvailableMarketTowersArray
global gAreaBTALatitude, gAreaBTALongitude, gAreaCallSign, gAreaCity, gAreaState
global gDecLatitude, gDecLongitude, gBrowserID

on openCard
   local tMapURL
   put "Viewing Map for: " into field "Map Heading" on me
   put gAreaCity & "," && gAreaState && "(" & gAreaCallSign & ")" after field "Map Heading"
   
   -- If any open browsers lets close them
   resetCard
   
   -- Create the Browser Object
   lock messages
   put the windowID of this stack into gBrowserID
   unlock messages
   
   if gBrowserId is not an integer then
      answer "Failed to open browser"
   else
      -- This links or sets the rec area of the browser to the rec area of the BrowserBackground
      put gServerName & "/LivecodeApps/EBSLicenseMapApp/MapDisplay.cfm?" into tMapURL
      put "CLat=" & gDecLatitude & "&" after tMapURL
      put "CLon=" & gDecLongitude & "&" after tMapURL
      put "MarkerTitle=" & gAreaCallSign after tMapURL
      put revBrowserOpen(gBrowserID, tMapURL) into tBrowserID
      revBrowserSet tBrowserID, "rect", the rect of image "BrowserArea"
      -- revBrowserSet lBrowserID, "url", tMapURL
   end if
end openCard

on preOpenCard
   
end preOpenCard

on resetCard
   -- Clears the browser from the screen and memory
   closeBrowsers
   
   -- Set top Full Width
   set the rect of image "BrowserArea" to 14,28,1014,702
end resetCard

on closeBrowsers
   -- Close all browser in memory
   repeat for each item gBrowserID in revBrowserInstances()
      revBrowserClose gBrowserID
   end repeat
end closeBrowsers

on closeCard
   closeBrowsers
end closeCard

Then on the button which is on the same card the code is

Code: Select all

global gScreenSize, gScreenCenterLoc, gResizeStackHorizontal, gResizeStackVertical, gDeviceHasNetworkConnection, gDeviceHasInternetConnection
global gServerName, gMainApplicationArchiveFilename, gMainApplicationFilename, gSplashAppVersion, gApplicationPrefsDir, gProgramAppUpdateArray
global gMainAppDownload, gMainAppExtracted, gOrgAvailableMarketsArray, gOrgAvailableMarketTowersArray
global gAreaBTALatitude, gAreaBTALongitude, gAreaCallSign, gAreaCity, gAreaState
global gDecLatitude, gDecLongitude, gBrowserID

on mouseUp
   get revBrowserCallScript(gBrowserID, "DisplayAlert()", "Testing from Livecode")
   put the result into it
end mouseUp

[GSPearson]

I changed tBrowserId into gtBrowserID and on the

Code: Select all

get revBrowserCallScript(gtBrowserID, "DisplayAlert()", "Testing from Livecode")

the error is:

button "Button": execution error at line n/a (External handler: exception) near "error in script"

[Mark]

Hi,

gBrowserID is not the windowID. It is the output from revBrowserOpen.

Code: Select all

put revBrowserOpen(the windowID of this stack,"") into gBrowserID

Now, gBrowserID should start at 1 and increase by 1 every time you create a new browser instance.

Kind regards,

Mark

[GSPearson]

In tracing the code, I got gBrowserID which starts with 1 and does increase by 1 each time a new map is displayed within the image rectangle.



I changed the Javascript to not use a parameter and it does work.

Code: Select all

on mouseUp
get revBrowserCallScript(gBrowserID, "DisplayAlert")
   put the result into it
end mouseUp

Now to try and figure out the parameters of the javascript function