Class: JavaScriptEnvironment

• Inheritance
• Class protocol
  • queries
• Instance protocol
  • accessing
  • builtin functions
  • error handling
  • expression evaluation
  • html-browser interaction
  • queries
  • setup
• Private classes

Inheritance:

   Object
   |
   +--JavaScriptEnvironment

Package:

stx:libjavascript

Category:

Languages-JavaScript-Framework

Version:

rev: 1.48 date: 2017/10/22 18:44:31

user: cg

file: JavaScriptEnvironment.st directory: libjavascript

module: stx stc-classLibrary: libjavascript

Class protocol:

 scriptingNamespace

return a namespace, in which the scripts global variables
are searched. Returning myself here, will make Math and Date
visible (maybe more in the future)

Instance protocol:

 __theReceiver

keep this for backward compatibility

 _argVariables

 _beHTMLEnvironment

 _defineFunction: aFunction as: selector

_functions isNil ifTrue:[

 _defineVariable: name value: initialValue

 _functions

** This is an obsolete interface - do not use it (it may vanish in future versions) **

 _functions: aDictionary

** This is an obsolete interface - do not use it (it may vanish in future versions) **

 _isHTMLEnvironment

 _localVariables

 _localVariables: aDictionary

 _outStream

 _outStream: aStream

 _outerEnvironment

 _outerEnvironment: anEnvironment

 _theReceiver

keep this for backward compatibility

 _theReceiver: anObject

 _topEnvironment

 isReturnedFrom: something

isReturnedFrom := something.

 receiver

 alert: msg

 confirm: msg

(comment from inherited method)
open a modal yes-no dialog.
Return true for yes, false for no.
If no GUI is present (headless applications), true is returned.

Someone in the sender chain may redefine the confirmation handler
by handling the UserConfirmation.

 js_alert: msg

 js_confirm: msg

 print: msg

 println

 println: msg

 doesNotUnderstand: aMessage

(comment from inherited method)
this message is sent by the runtime system (VM) when
a message is not understood by some object (i.e. there
is no method for that selector). The original message has
been packed into aMessage (i.e. the receiver, selector and
any arguments) and the original receiver is then sent the
#doesNotUnderstand: message.
Here, we raise another signal which usually enters the debugger.
You can of course redefine #doesNotUnderstand: in your classes
to implement message delegation,
or handle the MessageNotUnderstood exception gracefully.

 _evaluateAction: aString with: aComponentName

invoked when some HTML-element (such as a button) with an ONCLICK
action is pressed. This is supposed to parse the passed string as
an expression in my language (i.e. javaScript) and invoke that
function.

 _readEvalFrom: inputStream to: outputStream errorTo: errorStream

 _readEvalFrom: inputStream to: outputStream errorTo: errorStream print: doPrint

self warn:'error in script: ' , ex description

 _readEvalPrintFrom: inputStream to: outputStream errorTo: errorStream

 exitWith: val

 _start

cannot do:

usage example(s):

self perform:#js_start ifNotUnderstood:[].

 _stop

cannot do:

usage example(s):

self perform:#js_stop ifNotUnderstood:[].

 _isFunctionEnvironment

 isInnerFunction

 isInnerJavaScriptBlock

 isJavaScriptClassNode

 _setupForWindow: aWindow

painter notNil ifTrue:[

Private classes:

    AppletObject
    AppletsObject
    Array
    Date
    Document
    DocumentObject
    FormFieldObject
    FormObject
    FormsObject
    HistoryObject
    Math
    String
    WindowObject