BBjWebManager::clearCallback

Description

In BBj 16.00 and higher, this method clears a registered callback for a specified BBjWebManager event.

In BBj 24.11 and higher, this method clears the callback routine for a specified BBjWebManager window event that was previously created using BBjWebManager::setCallback.

Note:

In BBj 22.03 and higher, BBjWebManager is an alias for BBjBuiManager.

Syntax

Return Value	Method
void	clearCallback(int `eventType`)
void	clearCallback(String `eventType`)
void	clearCallback(String `eventType`, int `callbackID`)

Parameters

Parameter	Description
eventType	Event type for which the callback is to be unregistered.
callbackID	If specified and non-zero, this is the callbackID that was returned from a previous BBjWebManager::setCallback. If not specified, or if zero is specified, all active callbacks for the specified `eventType` are cleared.

Return Value

None.

Remarks

This maps to removeEventListener.

Example

rem ' BBjWebManager

sysgui = unt
open (sysgui)"X0"
sysgui! = bbjapi().getSysGui()

web! = bbjapi().getBuiManager()
web!.setCallback(web!.ON_BROWSER_CLOSE,"ON_BROWSER_CLOSE",err=*next)
web!.clearCallback(web!.ON_BROWSER_BACK,err=*next)
bbjapi().getConfig().releaseOnLostConnection(0)
setesc ON_LOST_CONNECTION

url$ = "(Not Browser)"
url$ = web!.getUrl(err=*next)

appName$ = " (Not Browser)"
appName$ = web!.getApplicationName(err=*next)

title$ = "BBjWebManager: " + appName$
touch = 0
touch = web!.isTouchSupported(err=*next)
if touch then title$ = title$ + " (Touch)" else title$ = title$ + " (Not Touch)"

window! = sysgui!.addWindow(25,25,450,600,title$,$00090083$)
window!.setCallback(window!.ON_CLOSE,"eoj")

status! = window!.addStatusBar(999)

window!.addStaticText(99,25,25,400,25,"URL: "+url$,$$)

window!.addGroupBox(100,25,75,400,125,"End Actions")
endApp! = window!.addRadioButton(101,30,100,75,25,"App",$0020$)
endUrl! = window!.addRadioButton(102,105,100,75,25,"URL",$0020$)
endMsg! = window!.addRadioButton(103,180,100,75,25,"Msg",$0020$)
endNone! = window!.addRadioButton(104,255,100,75,25,"None",$0020$)
endDefault! = window!.addRadioButton(105,330,100,75,25,"Default",$0020$)
endGroup! = window!.addRadioGroup()
endGroup!.add(endApp!)
endGroup!.add(endUrl!)
endGroup!.add(endMsg!)
endGroup!.add(endNone!)
endGroup!.add(endDefault!)
window!.addStaticText(106,30,150,60,25,"Value:",$8000$)
endValue! = window!.addEditBox(107,100,150,225,25,$$)
setEndAction! = window!.addButton(108,340,150,75,25,"Set",$$)
setEndAction!.setCallback(setEndAction!.ON_BUTTON_PUSH,"setEndAction")

window!.addGroupBox(200,25,225,400,125,"Err Actions")
errApp! = window!.addRadioButton(201,30,250,75,25,"App",$0020$)
errUrl! = window!.addRadioButton(202,105,250,75,25,"URL",$0020$)
errMsg! = window!.addRadioButton(203,180,250,75,25,"Msg",$0020$)
errNone! = window!.addRadioButton(204,255,250,75,25,"None",$0020$)
errDefault! = window!.addRadioButton(205,330,250,75,25,"Default",$0020$)
errGroup! = window!.addRadioGroup()
errGroup!.add(errApp!)
errGroup!.add(errUrl!)
errGroup!.add(errMsg!)
errGroup!.add(errNone!)
errGroup!.add(errDefault!)
window!.addStaticText(206,30,300,60,25,"Value:",$8000$)
errValue! = window!.addEditBox(207,100,300,225,25,$$)
setErrAction! = window!.addButton(208,340,300,75,25,"Set",$$)
setErrAction!.setCallback(setEndAction!.ON_BUTTON_PUSH,"setErrAction")

title$ = "Show Confirm Close Dialog"
confirm = 0
confirm = web!.getShowConfirmCloseDialog(err=*next)
flags$ = iff(confirm,$0004$,$0000$)
setShowConfirmDialog! = window!.addCheckBox(209,25,375,300,25,title$,flags$)
setShowConfirmDialog!.setCallback(setShowConfirmDialog!.ON_CHECK_ON,"showConfirmDialogOn")
setShowConfirmDialog!.setCallback(setShowConfirmDialog!.ON_CHECK_OFF,"showConfirmDialogOff")

showBusy! = window!.addButton(1,25,425,100,25,"Busy",$$)
showBusy!.setCallback(showBusy!.ON_BUTTON_PUSH,"showBusy")
busyMessage! = window!.addEditBox(300,150,425,275,25,"Working...",$$)

gosub fetch

rem ' https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/Date
js$ = "function toISOString(date){try{return new Date(date).toISOString()}catch(e){return new String(e)}}"
sysgui!.injectScript(js$)
toISOString! = window!.addButton(2,25,475,100,25,"toISOString",$$)
toISOString!.setCallback(toISOString!.ON_BUTTON_PUSH,"toISOString")

text$ = "December 25, " + date(0:"%Yl")
text! = window!.addEditBox(400,150,475,275,25,text$,$$)

web!.setCallback(web!.ON_EXECUTE_SCRIPT,"executeScript",err=*next)

executeAsyncScript! = window!.addButton(3,150,525,275,25,"executeAsyncScript",$$)
executeAsyncScript!.setCallback(executeAsyncScript!.ON_BUTTON_PUSH,"samples")

process_events

eoj:
  release

toISOString:
  text$ = text!.getText()
  js$ = "toISOString('"+text$+"')"
  t = tim
  if info(3,6)="5" or info(3,6)="6" then
     ISOString! = web!.executeScript(js$)
  else
     ISOString! = sysgui!.executeScript(js$)
  endif
  t = tim - t, t = t * 3600 * 1000
  msg$ = "executeScript " + js$ + " = " + str(ISOString!) + ": " + str(t) + " milliseconds."
  status!.setText(msg$)
return

samples:
  if web then body$ = "" else body$ = "document.body."
  js$ = "console.log('executeAsyncScript')"; gosub executeAsyncScript; rem ' undefined
  js$ = "Math.sqrt(100)"; gosub executeAsyncScript; rem ' Double or Integer 10
  js$ = "Math.sqrt(-1)"; gosub executeAsyncScript; rem ' Double NaN
  js$ = "null"; gosub executeAsyncScript; rem ' null
  js$ = "undefined"; gosub executeAsyncScript; rem ' null
  js$ = "document.hasFocus()"; gosub executeAsyncScript; rem ' Boolean false
  js$ = body$ + "style.backgroundColor"; gosub executeAsyncScript; rem ' String #ffff00
  js$ = "Math.PI"; gosub executeAsyncScript; rem ' Double 3.141592653589793
  js$ = "1/0"; gosub executeAsyncScript; rem ' Double Infinity
  js$ = "-1/0"; gosub executeAsyncScript; rem ' Double -Infinity
  js$ = "Number.MIN_SAFE_INTEGER"; gosub executeAsyncScript; rem '
  js$ = "Number.MAX_SAFE_INTEGER"; gosub executeAsyncScript; rem '
  js$ = "Number.MAX_VALUE"; gosub executeAsyncScript; rem ' 
  js$ = "0"; gosub executeAsyncScript; rem ' Integer
  js$ = "42"; gosub executeAsyncScript; rem ' Integer
  js$ = "2147483647"; gosub executeAsyncScript; rem ' Integer
  js$ = "2147483648"; gosub executeAsyncScript; rem ' Long
  js$ = """true"""; gosub executeAsyncScript; rem ' String
  js$ = """false"""; gosub executeAsyncScript; rem ' String
  js$ = """0"""; gosub executeAsyncScript; rem ' String
  js$ = """1"""; gosub executeAsyncScript; rem ' String
  js$ = """null"""; gosub executeAsyncScript; rem ' String
  js$ = "null"; gosub executeAsyncScript; rem ' null
  js$ = "undefined"; gosub executeAsyncScript; rem ' null
return

executeAsyncScript:
  t = tim
  if info(3,6)="5" or info(3,6)="6" then
     index! = web!.executeAsyncScript(js$)
  else
     index! = sysgui!.executeAsyncScript(js$)
  endif
  index = 0; if index!<>null() then index = num(index!)
  t = tim - t, t = t * 3600 * 1000
  System.out.println("executeAsyncScript " + str(index) + " " + js$ + ": " + str(t) + " milliseconds.")
return

executeScript:
  event! = sysgui!.getLastEvent()
  index = 0, index = event!.getIndex(err=*next)
  result! = event!.getResult()
  if result! = null() then result$ = "null" else result$ = result!.getClass().getName()+" "+result!.toString()
  msg$ = event!.getEventName()+" "+str(index)+" "+date(0:"%Hz:%mz:%sz.%tz %p") 
  msg$ = msg$ + " result = " + result$ + " script = " + event!.getScript()
  print msg$
  System.out.println(msg$)
  status!.setText(msg$)
  rem i = msgbox(msg$,0,event!.getEventName())
return

fetch:
  endAction! = web!.getEndAction(err=*return)
  switch endAction!.getActionType()
    case endAction!.ACTION_APP
       endApp!.setSelected(1)
       endValue!.setText(endAction!.getAppName())
       break
    case endAction!.ACTION_URL
       endUrl!.setSelected(1)
       endValue!.setText(endAction!.getUrl())
       break
    case endAction!.ACTION_MSG
       endMsg!.setSelected(1)
       endValue!.setText(endAction!.getMessage())
       break
    case endAction!.ACTION_NONE
       endNone!.setSelected(1)
       endValue!.setText("")
    break
    case endAction!.ACTION_DEFAULT
       endDefault!.setSelected(1)
       endValue!.setText("")
       break
  swend
  errAction! = web!.getErrAction(err=*return)
  switch errAction!.getActionType()
    case errAction!.ACTION_APP
       errApp!.setSelected(1)
       errValue!.setText(errAction!.getAppName())
       break
    case errAction!.ACTION_URL
       errUrl!.setSelected(1)
       errValue!.setText(errAction!.getUrl())
       break
    case errAction!.ACTION_MSG
       errMsg!.setSelected(1)
       errValue!.setText(errAction!.getMessage())
       break
    case errAction!.ACTION_NONE
       errNone!.setSelected(1)
       errValue!.setText("")
       break
    case errAction!.ACTION_DEFAULT
       errDefault!.setSelected(1)
       errValue!.setText("")
       break
  swend
return

setEndAction:
  if endApp!.isSelected() then action! = web!.appAction(endValue!.getText())
  if endUrl!.isSelected() then action! = web!.urlAction(endValue!.getText())
  if endMsg!.isSelected() then action! = web!.msgAction(endValue!.getText())
  if endNone!.isSelected() then action! = web!.noneAction()
  if endDefault!.isSelected() then action! = web!.defaultAction()
  web!.setEndAction(action!,err=*return)
return

setErrAction:
  if errApp!.isSelected() then action! = web!.appAction(errValue!.getText())
  if errUrl!.isSelected() then action! = web!.urlAction(errValue!.getText())
  if errMsg!.isSelected() then action! = web!.msgAction(errValue!.getText())
  if errNone!.isSelected() then action! = web!.noneAction()
  if errDefault!.isSelected() then action! = web!.defaultAction()
  web!.setErrAction(action!,err=*return)
return

showConfirmDialogOn:
  web!.setShowConfirmCloseDialog(1,err=*next)
return

showConfirmDialogOff:
  web!.setShowConfirmCloseDialog(0,err=*next)
return

showBusy:
  busy! = web!.getBusyIndicator(err=*return)
  busy!.setText(busyMessage!.getText())
  busy!.setVisible(1)
  wait 3
  busy!.setVisible(0)
return

on_lost_connection:
  event$ = "ON_LOST_CONNECTION"
  goto terminate

on_browser_close:
  event$ = "ON_BROWSER_CLOSE"
  goto terminate

terminate:
  seterr release
  System.err.println(pgm(-2)+" "+event$+" "+str(tcb(19)))
  filename$ = System.getProperty("user.home") + "/Desktop/" + event$ + ".txt"
  u = unt
  open (u,mode="o_create,o_trunk")filename$
  print (u)date(0:"%Hz:%mz:%sz.%tz ")+event$+" "+str(tcb(19))
  close (u)
release:
  release

Version History

BBj 24.11: Added ways to clear the callback routine for a specified BBjWebManager window event.