"
 COPYRIGHT (c) 1997 by eXept Software AG
              All Rights Reserved

 This software is furnished under a license and may be used
 only in accordance with the terms of that license and with the
 inclusion of the above copyright notice.   This software may not
 be provided or otherwise made available to, or used by, any
 other person.  No title to or ownership of the software is
 hereby transferred.
"


"{ Package: 'stx:libjava' }"

JavaView subclass:#JavaEmbeddedFrameView
	instanceVariableNames:'codeURL codeBaseURL documentURL archiveURL parameterDictionary
		embeddedAppletFrame applet appletID appletThread
		infoDisplayReceiver autoSetupApplet autoStartApplet
		autoDestroyApplet isNS40 attributeHashTable appletIsPreloaded'
	classVariableNames:'NextSequentialAppletID'
	poolDictionaries:''
	category:'Languages-Java-Views-Support'
!

!JavaEmbeddedFrameView class methodsFor:'documentation'!

copyright
"
 COPYRIGHT (c) 1997 by eXept Software AG
              All Rights Reserved

 This software is furnished under a license and may be used
 only in accordance with the terms of that license and with the
 inclusion of the above copyright notice.   This software may not
 be provided or otherwise made available to, or used by, any
 other person.  No title to or ownership of the software is
 hereby transferred.
"

!

documentation
"
    a wrapper view, which allows for Java Applets to be embedded
    in a smalltalk view.
    This requires a netscape to be installed on the system.

    [Author:]
        Claus Gittinger
"
! !

!JavaEmbeddedFrameView class methodsFor:'support'!

newAppletContext
    |jMozillaAppletContextClass|

    "/ this makes it a modzilla applet context ...
    jMozillaAppletContextClass := Java classForName:'netscape.applet.MozillaAppletContext'.
    jMozillaAppletContextClass isNil ifTrue:[
        self warn:'no netscape.applet.MozillaAppletContext class'.
        ^ nil
    ].
    jMozillaAppletContextClass instVarNamed:'debug' put:1.

    ^ jMozillaAppletContextClass new.

    "Created: / 20.10.1998 / 15:40:08 / cg"
    "Modified: / 20.10.1998 / 15:43:47 / cg"
! !

!JavaEmbeddedFrameView methodsFor:'accessing'!

applet
    ^ applet

    "Created: / 26.1.1999 / 13:51:10 / cg"
!

appletID
    "return the value of the instance variable 'appletID' (automatically generated)"

    ^ appletID

    "Created: / 28.1.1998 / 21:08:54 / cg"
!

appletID:something
    "set the value of the instance variable 'appletID' (automatically generated)"

    appletID := something.

    "Created: / 28.1.1998 / 21:08:54 / cg"
!

appletIsPreloaded:aBoolean
    appletIsPreloaded := aBoolean.
!

appletThread
    ^ appletThread

    "Created: / 28.1.1998 / 21:39:42 / cg"
!

archiveURL:anArchiveURLString
    archiveURL := anArchiveURLString

    "Created: / 28.1.1998 / 21:00:38 / cg"
!

codeBaseURL:aCodeBaseURLString
    codeBaseURL := aCodeBaseURLString

    "Created: / 28.1.1998 / 20:59:34 / cg"
!

codeURL:aCodeURLString
    codeURL := aCodeURLString

    "Created: / 28.1.1998 / 21:10:11 / cg"
!

documentURL:aDocumentURLString
    documentURL := aDocumentURLString

    "Created: / 28.1.1998 / 21:00:03 / cg"
    "Modified: / 28.1.1998 / 21:00:28 / cg"
!

embeddedAppletFrame
    ^ embeddedAppletFrame

    "Created: / 28.1.1998 / 21:39:35 / cg"
!

infoDisplayReceiver
    "return the value of the instance variable 'infoDisplayReceiver' (automatically generated)"

    ^ infoDisplayReceiver

    "Created: / 28.1.1998 / 21:43:54 / cg"
!

infoDisplayReceiver:something
    "set the value of the instance variable 'infoDisplayReceiver' (automatically generated)"

    infoDisplayReceiver := something.

    "Created: / 28.1.1998 / 21:43:54 / cg"
!

parameterAt:key put:valueString
    parameterDictionary isNil ifTrue:[
        parameterDictionary := IdentityDictionary new.
    ].
    parameterDictionary at:key put:valueString.
    attributeHashTable 
        perform:#'put(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;'
        with:(Java as_String:key)
        with:(Java as_String:valueString)

    "Created: / 26.1.1999 / 13:46:01 / cg"
    "Modified: / 28.1.1999 / 17:59:36 / cg"
!

parameterDictionary:aParameterDictionary
    parameterDictionary := aParameterDictionary

    "Created: / 28.1.1998 / 21:01:20 / cg"
! !

!JavaEmbeddedFrameView methodsFor:'applet control'!

appletDESTROY
    |ev|

    isNS40 ifTrue:[
        "/ ev = netscape.applet.AppletEvent(APPLET_DESTROY);
        ev := (Java classForName:'netscape.applet.AppletEvent')
                newWith_int:(embeddedAppletFrame class instVarNamed:'APPLET_DESTROY').
        embeddedAppletFrame
            perform:#'sendEvent(Lnetscape/applet/NEvent;)V'
            with:ev.
        ^ self
    ].
    embeddedAppletFrame
        perform:#'sendEvent(I)V' 
        with:(embeddedAppletFrame class instVarNamed:'APPLET_DESTROY').

    "Created: / 28.1.1998 / 21:41:45 / cg"
    "Modified: / 13.11.1998 / 14:19:49 / cg"
!

appletDISPOSE
    |ev|

    isNS40 ifTrue:[
        "/ ev = netscape.applet.AppletEvent(APPLET_DISPOSE);
        ev := (Java classForName:'netscape.applet.AppletEvent')
                newWith_int:(embeddedAppletFrame class instVarNamed:'APPLET_DISPOSE').
        embeddedAppletFrame
            perform:#'sendEvent(Lnetscape/applet/NEvent;)V'
            with:ev.
        ^ self
    ].
    embeddedAppletFrame
        perform:#'sendEvent(I)V' 
        with:(embeddedAppletFrame class instVarNamed:'APPLET_DISPOSE').

    "Created: / 28.1.1998 / 21:41:57 / cg"
    "Modified: / 13.11.1998 / 14:19:43 / cg"
!

appletINIT
    |ev|

    isNS40 ifTrue:[
        "/ ev = netscape.applet.AppletEvent(APPLET_INIT);
        ev := (Java classForName:'netscape.applet.AppletEvent')
                newWith_int:(embeddedAppletFrame class instVarNamed:'APPLET_INIT').
        embeddedAppletFrame
            perform:#'sendEvent(Lnetscape/applet/NEvent;)V'
            with:ev.
        ^ self
    ].
    embeddedAppletFrame
        perform:#'sendEvent(I)V' 
        with:(embeddedAppletFrame class instVarNamed:'APPLET_INIT').

    "Created: / 28.1.1998 / 21:17:51 / cg"
    "Modified: / 13.11.1998 / 14:19:35 / cg"
!

appletLOAD
    |ev|

    isNS40 ifTrue:[
        "/ ev = netscape.applet.AppletEvent(APPLET_LOAD);
        ev := (Java classForName:'netscape.applet.AppletEvent')
                newWith_int:(embeddedAppletFrame class instVarNamed:'APPLET_LOAD').
        embeddedAppletFrame
            perform:#'sendEvent(Lnetscape/applet/NEvent;)V'
            with:ev.
        ^ self
    ].
    embeddedAppletFrame
        perform:#'sendEvent(I)V' 
        with:(embeddedAppletFrame class instVarNamed:'APPLET_LOAD').

    "Created: / 28.1.1998 / 21:17:37 / cg"
    "Modified: / 13.11.1998 / 14:19:31 / cg"
!

appletSTART
    |ev|

    isNS40 ifTrue:[
        "/ ev = netscape.applet.AppletEvent(APPLET_START);
        ev := (Java classForName:'netscape.applet.AppletEvent')
                newWith_int:(embeddedAppletFrame class instVarNamed:'APPLET_START').
        embeddedAppletFrame
            perform:#'sendEvent(Lnetscape/applet/NEvent;)V'
            with:ev.
        ^ self
    ].
    embeddedAppletFrame
        perform:#'sendEvent(I)V' 
        with:(embeddedAppletFrame class instVarNamed:'APPLET_START').

    "Created: / 28.1.1998 / 21:18:01 / cg"
    "Modified: / 13.11.1998 / 14:19:21 / cg"
!

appletSTOP
    |ev|

    isNS40 ifTrue:[
        "/ ev = netscape.applet.AppletEvent(APPLET_STOP);
        ev := (Java classForName:'netscape.applet.AppletEvent')
                newWith_int:(embeddedAppletFrame class instVarNamed:'APPLET_STOP').
        embeddedAppletFrame
            perform:#'sendEvent(Lnetscape/applet/NEvent;)V'
            with:ev.
        ^ self
    ].
    embeddedAppletFrame
        perform:#'sendEvent(I)V' 
        with:(embeddedAppletFrame class instVarNamed:'APPLET_STOP').

    "Created: / 28.1.1998 / 21:41:33 / cg"
    "Modified: / 13.11.1998 / 14:19:14 / cg"
!

autoDestroyApplet:aBoolean
    "set/clear the autoDestroy flag.
     If set, the applet will be shutDown whenever the I get destroyed.
     if clear, the applet is not automatically shutDown and must be
     terminated by someone else.
     The default is false."

    autoDestroyApplet := aBoolean.

    "Created: / 29.1.1998 / 15:18:50 / cg"
    "Modified: / 29.1.1998 / 15:21:01 / cg"
!

autoSetupApplet:aBoolean
    "set/clear the autoSetup flag.
     If set, the appletFrame will be setup whenever the I get realized
     for the first time.
     If clear, the frame is not automatically setup and must be
     setup by someone else.
     The default is true."


    autoSetupApplet := aBoolean.

    "Created: / 29.1.1998 / 15:18:41 / cg"
    "Modified: / 29.1.1998 / 20:45:37 / cg"
!

autoStartApplet:aBoolean
    "set/clear the autoStart flag.
     If set, the applet will be loaded & started whenever the I get realized
     for the first time.
     If clear, the applet is not automatically started and must be
     started by someone else.
     The default is false."


    autoStartApplet := aBoolean.

    "Created: / 29.1.1998 / 15:18:41 / cg"
    "Modified: / 29.1.1998 / 15:20:54 / cg"
!

startApplet
    "/ ensure its initialized when the first event comes;
    "/ therefore, raise my prio above the event dispatchers prio for a while.

    Processor activeProcess withPriority:(Processor activePriority + 1)
    do:[
        self startAppletThread.

        appletIsPreloaded ifFalse:[self appletLOAD].
        self appletINIT.
    ].

    self appletSTART

    "Modified: / 28.1.1998 / 21:30:24 / cg"
!

startAppletThread
    |appletName|

    appletThread := JavaProcess 
            for:[
                    "/ passnotifications to the documentFrame ...
                    Object informationSignal handle:[:ex |
                        JavaVM javaConsoleStream showCR:ex errorString.
                        ex proceed.
                    ] do:[
                        Object activityNotificationSignal handle:[:ex |
                            infoDisplayReceiver notNil ifTrue:[
                                infoDisplayReceiver infoDisplay:ex errorString.
                            ] ifFalse:[
                                Transcript showCR:ex errorString
                            ].
                            ex proceed.
                        ] do:[
                            [
                                "/ Transcript showCR:(AbsoluteTime now printString , ' start embeddedAppletFrame').
                                embeddedAppletFrame perform:#'run()V'.
                            ] valueNowOrOnUnwindDo:[
                                appletThread notNil ifTrue:[
                                    appletThread terminateAllSubprocesses.
                                ].
                                Transcript showCR:'JAVA applet startup finished'.
                            ]
                        ]
                    ]
                ]
            priority:(Processor activePriority "- 1").

    appletName := codeURL asFilename withoutSuffix baseName.
    appletThread name:('JAVA-' , appletName , '-applet' , ' [startup]').
    appletThread restartable:true.
    appletThread resume.
    ^ appletThread.

    "Created: / 28.1.1998 / 21:30:32 / cg"
    "Modified: / 24.12.1999 / 02:58:50 / cg"
!

stopApplet
    |n n2|

    (appletThread notNil 
    and:[appletThread isDead not])ifTrue:[
"/        'EmbeddedAppletFrame [info]: send APPLET_STOP ...' infoPrintCR.
        self appletSTOP.

"/        'EmbeddedAppletFrame [info]: send APPLET_DESTROY ...' infoPrintCR.
        self appletDESTROY.

"/        'EmbeddedAppletFrame [info]: send APPLET_DISPOSE ...' infoPrintCR.
        self appletDISPOSE.

        "/
        "/ give it a chance to stop ...
        "/
        Processor yield.
        n2 := 0.
        [appletThread isDead] whileFalse:[
            "/ give it a second to shut down ...
            n := 0.
            [n < 10 and:[appletThread isDead not]] whileTrue:[
                Delay waitForSeconds:0.1.
                n := n + 1.
            ].
            appletThread isDead ifFalse:[
                "/ after 3 seconds, kill it.
                Transcript showCR:'EmbeddedAppletFrame [info]: JAVA thread did not stop - soft terminate ...'.
appletThread == JavaVM javaScreenUpdaterThread ifTrue:[self halt].
appletThread == JavaVM javaEventQueueThread ifTrue:[self halt].
                appletThread terminate.
                n2 := n2 + 1.
                n2 > 3 ifTrue:[
                    Transcript showCR:'EmbeddedAppletFrame [info]: JAVA thread did not stop - shooting down ...'.
                    appletThread terminateNoSignal
                ]
            ].
        ].
    ].
    appletThread := nil

    "Modified: / 24.12.1999 / 02:35:25 / cg"
! !

!JavaEmbeddedFrameView methodsFor:'initialize / release'!

destroy
    autoDestroyApplet == true ifTrue:[
        self stopApplet
    ].
    super destroy.

    "Created: / 29.1.1998 / 15:21:45 / cg"
    "Modified: / 29.1.1998 / 15:28:26 / cg"
!

initialize           
    appletIsPreloaded := false.
    super initialize.
    viewBackground := Color black.

    "Modified: / 28.1.1999 / 17:44:11 / cg"
!

realize
    autoSetupApplet ~~ false ifTrue:[
        self setupAppletFrameIn:nil initializeJava:true
    ].
    autoStartApplet == true ifTrue:[
        embeddedAppletFrame notNil ifTrue:[
            self startApplet
        ]
    ].
    super realize.

    "Created: / 29.1.1998 / 15:21:30 / cg"
    "Modified: / 20.10.1998 / 15:46:32 / cg"
! !

!JavaEmbeddedFrameView methodsFor:'private'!

setupAppletFrameIn:anAppletContextOrNil
     ^ self setupAppletFrameIn:anAppletContextOrNil initializeJava:true.
!

setupAppletFrameIn:anAppletContextOrNil initializeJava:initializeJava
     |appletContext
     jEmbeddedAppletFrameClass jDerivedAppletFrameClass
     toolkit peer attribs id
     jCodeBaseURL jDocumentURL jArchiveURL u fn|

    embeddedAppletFrame notNil ifTrue:[
        "/ already setup
        ^ self
    ].

    codeBaseURL isNil ifTrue:[
        ^ self
    ].

    initializeJava ifTrue:[
        Java startupJavaSystem.
    ] ifFalse:[
        JavaVM initializeVMIfNoEventThreadRunning
    ].

    "/ if its a relative file-URL, make it relative under
    "/ java...
    u := URL fromString:codeBaseURL.
    u method = 'file' ifTrue:[
        fn := Smalltalk getSystemFileName:u file.
        fn isNil ifTrue:[
            fn := Smalltalk getPackageFileName:('stx/libjava/' , u file).
        ]
    ].
    fn notNil ifTrue:[
        fn := 'file:' , fn asFilename pathName
    ] ifFalse:[
        fn := codeBaseURL
    ].
    jCodeBaseURL := Java as_URL:fn.
    documentURL notNil ifTrue:[
        jDocumentURL := Java as_URL:documentURL.
    ] ifFalse:[
        jDocumentURL := Java as_URL:fn
    ].
    archiveURL notNil ifTrue:[
        jArchiveURL := Java as_URL:archiveURL.
    ].

    id := appletID.
    id isNil ifTrue:[
        NextSequentialAppletID isNil ifTrue:[
            NextSequentialAppletID := 1.
        ].
        id := NextSequentialAppletID.
        NextSequentialAppletID := NextSequentialAppletID + 1
    ].

    attribs := Dictionary new.
    width notNil ifTrue:[attribs at:'width' put:width printString].
    height notNil ifTrue:[attribs at:'height' put:height printString].

    codeURL notNil ifTrue:[
        attribs at:'code' put:codeURL
    ].
    parameterDictionary notNil ifTrue:[
        attribs declareAllFrom:parameterDictionary
    ].
    attributeHashTable := Java as_Hashtable:attribs.

    anAppletContextOrNil notNil ifTrue:[
        appletContext := anAppletContextOrNil
    ] ifFalse:[
        appletContext := self class newAppletContext.
        appletContext isNil ifTrue:[
            self warn:'no netscape.applet.MozillaAppletContext class'.
            ^ false
        ].
    ].

    jEmbeddedAppletFrameClass := Java classForName:'netscape.applet.EmbeddedAppletFrame'.
    jEmbeddedAppletFrameClass isNil ifTrue:[
        self warn:'no netscape.applet.EmbeddedAppletFrame class'.
        ^ false
    ].
    jDerivedAppletFrameClass := Java classForName:'netscape.applet.DerivedAppletFrame'.
    jDerivedAppletFrameClass notNil ifTrue:[
        "/ ns4.0
        embeddedAppletFrame := jDerivedAppletFrameClass new.
        isNS40 := true.
    ] ifFalse:[
        "/ ns3.x
        embeddedAppletFrame := jEmbeddedAppletFrameClass new.
        isNS40 := false.
    ].
    embeddedAppletFrame instVarNamed:'pData' put:self.

    toolkit := (Java classForName:'java.awt.Toolkit') perform:#'getDefaultToolkit'.
    peer := toolkit 
                perform:#'createFrame(Ljava/awt/Frame;)Ljava/awt/peer/FramePeer;'
                with:embeddedAppletFrame.

    (embeddedAppletFrame respondsTo:#'<init>(Ljava/net/URL;Ljava/net/URL;Ljava/net/URL;Ljava/util/Hashtable;Lnetscape/applet/MozillaAppletContext;Ljava/lang/Integer;Z)V')
    ifTrue:[
        "/ 4.0 netscape
        embeddedAppletFrame 
            perform:#'<init>(Ljava/net/URL;Ljava/net/URL;Ljava/net/URL;Ljava/util/Hashtable;Lnetscape/applet/MozillaAppletContext;Ljava/lang/Integer;Z)V'
            withArguments:
                (Array
                    with:jDocumentURL
                    with:jCodeBaseURL
                    with:jArchiveURL
                    with:attributeHashTable
                    with:appletContext
                    with:(Java as_Integer:id)
                    with:0 "/ reloadClasses-boolean
                ).
    ] ifFalse:[
        (embeddedAppletFrame respondsTo:#'<init>(Ljava/net/URL;Ljava/net/URL;Ljava/net/URL;Ljava/util/Hashtable;Lnetscape/applet/MozillaAppletContext;Ljava/lang/Integer;)V')
        ifTrue:[
            "/ 3.01 netscape
            embeddedAppletFrame 
                perform:#'<init>(Ljava/net/URL;Ljava/net/URL;Ljava/net/URL;Ljava/util/Hashtable;Lnetscape/applet/MozillaAppletContext;Ljava/lang/Integer;)V'
                with:jDocumentURL
                with:jCodeBaseURL
                with:jArchiveURL
                with:attributeHashTable
                with:appletContext
                with:(Java as_Integer:id).
        ] ifFalse:[
            "/ oldStyle netscape
            embeddedAppletFrame 
                perform:#'<init>(Ljava/net/URL;Ljava/net/URL;Ljava/util/Hashtable;Lnetscape/applet/MozillaAppletContext;I)V'
                with:jDocumentURL
                with:jCodeBaseURL
                with:attributeHashTable
                with:appletContext
                with:id.
        ].
    ].

    embeddedAppletFrame instVarNamed:'peer' put:peer.

    self javaPeer:peer.

    ^ true

    "Created: / 20.10.1998 / 15:47:04 / cg"
    "Modified: / 24.12.1999 / 01:38:17 / cg"
! !

!JavaEmbeddedFrameView methodsFor:'resizing'!

sizeChanged:how
    super sizeChanged:how.
^ self.
    embeddedAppletFrame notNil ifTrue:[
        (embeddedAppletFrame perform:#'isResizable()Z') ~~ 0 ifTrue:[
            self windowGroup sensor
                 pushDamageEvent:(WindowEvent
                                     for:self
                                     type:#configureX:y:width:height:
                                     arguments:(Array with:left with:top with:width with:height)).
"/            embeddedAppletFrame
"/                perform:#'appletResize(II)V'
"/                with:self width
"/                with:self height.
        ]
    ]

    "Modified: / 1.2.1998 / 19:15:07 / cg"
! !

!JavaEmbeddedFrameView class methodsFor:'documentation'!

version
    ^ '$Header: /cvs/stx/stx/libjava/JavaEmbeddedFrameView.st,v 1.24 2002-11-22 20:14:01 cg Exp $'
! !