xref: /aoo41x/main/basic/source/sample/object.cxx (revision cdf0e10c)
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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
29*cdf0e10cSrcweir #include "precompiled_basic.hxx"
30*cdf0e10cSrcweir #include <tools/errcode.hxx>
31*cdf0e10cSrcweir #include <basic/sbxobj.hxx>
32*cdf0e10cSrcweir #include <basic/sbx.hxx>
33*cdf0e10cSrcweir #ifndef __SBX_SBXVARIABLE_HXX //autogen
34*cdf0e10cSrcweir #include <basic/sbxvar.hxx>
35*cdf0e10cSrcweir #endif
36*cdf0e10cSrcweir #ifndef _MSGBOX_HXX //autogen
37*cdf0e10cSrcweir #include <vcl/msgbox.hxx>
38*cdf0e10cSrcweir #endif
39*cdf0e10cSrcweir 
40*cdf0e10cSrcweir #include "object.hxx"
41*cdf0e10cSrcweir #include "collelem.hxx"
42*cdf0e10cSrcweir 
43*cdf0e10cSrcweir // Das Sample-Objekt hat folgende Elemente:
44*cdf0e10cSrcweir // 1) Properties:
45*cdf0e10cSrcweir //    Name      der Name
46*cdf0e10cSrcweir //    Value     ein double-Wert, beide bereits als Default drin
47*cdf0e10cSrcweir // 2) Methoden:
48*cdf0e10cSrcweir //    Create	Erzeugen eines neuen Unterelements
49*cdf0e10cSrcweir //    Display   Ausgabe eines Textes
50*cdf0e10cSrcweir //    Square    Argument * Argument
51*cdf0e10cSrcweir //    Event     Aufruf eines Basic-Eventhandlers
52*cdf0e10cSrcweir // 3) Unterobjekte:
53*cdf0e10cSrcweir //    Per Create() kann ein neues Unterelement eingerichtet werden,
54*cdf0e10cSrcweir //    das indiziert werden kann, falls mehrere Objekte gleichen Namens
55*cdf0e10cSrcweir //    existieren.
56*cdf0e10cSrcweir // Diese Implementation ist ein Beispiel fuer eine tabellengesteuerte
57*cdf0e10cSrcweir // Version, die sehr viele Elemente enthalten kann. Die Elemente werden
58*cdf0e10cSrcweir // je nach Bedarf aus der Tabelle in das Objekt uebernommen.
59*cdf0e10cSrcweir // Die Collection findet sich in COLLECTN.*, die in der Collection
60*cdf0e10cSrcweir // enthaltenen Objekte in COLLELEM.*
61*cdf0e10cSrcweir 
62*cdf0e10cSrcweir // Das Sample-Objekt wird in ..\app\mybasic.cxx wie folgt in StarBASIC
63*cdf0e10cSrcweir // eingebaut:
64*cdf0e10cSrcweir 
65*cdf0e10cSrcweir // MyBasic::MyBasic() : StarBASIC()
66*cdf0e10cSrcweir // {
67*cdf0e10cSrcweir //		AddFactory( new SampleObjectFac() );
68*cdf0e10cSrcweir // }
69*cdf0e10cSrcweir 
70*cdf0e10cSrcweir // Das nArgs-Feld eines Tabelleneintrags ist wie folgt verschluesselt:
71*cdf0e10cSrcweir 
72*cdf0e10cSrcweir #define _ARGSMASK   0x00FF  // Bis zu 255 Argumente
73*cdf0e10cSrcweir #define _RWMASK     0x0F00  // Maske fuer R/W-Bits
74*cdf0e10cSrcweir #define _TYPEMASK   0xF000  // Maske fuer den Typ des Eintrags
75*cdf0e10cSrcweir 
76*cdf0e10cSrcweir #define _READ       0x0100  // kann gelesen werden
77*cdf0e10cSrcweir #define _BWRITE     0x0200  // kann as Lvalue verwendet werden
78*cdf0e10cSrcweir #define _LVALUE     _BWRITE  // kann as Lvalue verwendet werden
79*cdf0e10cSrcweir #define _READWRITE  0x0300  // beides
80*cdf0e10cSrcweir #define	_OPT		0x0400	// sal_True: optionaler Parameter
81*cdf0e10cSrcweir #define _METHOD     0x1000  // Masken-Bit fuer eine Methode
82*cdf0e10cSrcweir #define _PROPERTY   0x2000  // Masken-Bit fuer eine Property
83*cdf0e10cSrcweir #define _COLL       0x4000  // Masken-Bit fuer eine Collection
84*cdf0e10cSrcweir 							// Kombination von oberen Bits:
85*cdf0e10cSrcweir #define _FUNCTION   0x1100  // Maske fuer Function
86*cdf0e10cSrcweir #define _LFUNCTION  0x1300  // Maske fuer Function, die auch als Lvalue geht
87*cdf0e10cSrcweir #define _ROPROP     0x2100  // Maske Read Only-Property
88*cdf0e10cSrcweir #define _WOPROP     0x2200  // Maske Write Only-Property
89*cdf0e10cSrcweir #define _RWPROP     0x2300  // Maske Read/Write-Property
90*cdf0e10cSrcweir #define _COLLPROP   0x4100  // Maske Read-Collection-Element
91*cdf0e10cSrcweir 
92*cdf0e10cSrcweir #define COLLNAME    "Elements"  // Name der Collection, hier mal hart verdrahtet
93*cdf0e10cSrcweir 
94*cdf0e10cSrcweir SampleObject::Methods SampleObject::aMethods[] = {
95*cdf0e10cSrcweir // Eine Sample-Methode (der Returnwert ist SbxNULL)
96*cdf0e10cSrcweir { "Display", SbxEMPTY, &SampleObject::Display, 1 | _FUNCTION },
97*cdf0e10cSrcweir 	// Ein Named Parameter
98*cdf0e10cSrcweir 	{ "message", SbxSTRING, NULL, 0 },
99*cdf0e10cSrcweir // Eine Sample-Funktion
100*cdf0e10cSrcweir { "Square", SbxDOUBLE, &SampleObject::Square, 1 | _FUNCTION },
101*cdf0e10cSrcweir 	// Ein Named Parameter
102*cdf0e10cSrcweir 	{ "value", SbxDOUBLE, NULL, 0 },
103*cdf0e10cSrcweir //  Basic-Callback
104*cdf0e10cSrcweir { "Event", SbxEMPTY, &SampleObject::Event, 1 | _FUNCTION },
105*cdf0e10cSrcweir 	// Ein Named Parameter
106*cdf0e10cSrcweir 	{ "event", SbxSTRING, NULL, 0 },
107*cdf0e10cSrcweir //  Element erzeugen
108*cdf0e10cSrcweir { "Create", SbxEMPTY, &SampleObject::Create, 1 | _FUNCTION },
109*cdf0e10cSrcweir 	// Ein Named Parameter
110*cdf0e10cSrcweir 	{ "name", SbxSTRING, NULL, 0 },
111*cdf0e10cSrcweir 
112*cdf0e10cSrcweir { NULL, SbxNULL, NULL, -1 }};  // Tabellenende
113*cdf0e10cSrcweir 
114*cdf0e10cSrcweir SampleObject::SampleObject( const String& rClass ) : SbxObject( rClass )
115*cdf0e10cSrcweir {
116*cdf0e10cSrcweir 	SetName( String( RTL_CONSTASCII_USTRINGPARAM("Sample") ) );
117*cdf0e10cSrcweir 	PutDouble( 1.0 );	// Startwert fuer Value
118*cdf0e10cSrcweir }
119*cdf0e10cSrcweir 
120*cdf0e10cSrcweir // Suche nach einem Element:
121*cdf0e10cSrcweir // Hier wird linear durch die Methodentabelle gegangen, bis eine
122*cdf0e10cSrcweir // passende Methode gefunden wurde.
123*cdf0e10cSrcweir // Wenn die Methode/Property nicht gefunden wurde, nur NULL ohne
124*cdf0e10cSrcweir // Fehlercode zurueckliefern, da so auch eine ganze Chain von
125*cdf0e10cSrcweir // Objekten nach der Methode/Property befragt werden kann.
126*cdf0e10cSrcweir 
127*cdf0e10cSrcweir SbxVariable* SampleObject::Find( const String& rName, SbxClassType t )
128*cdf0e10cSrcweir {
129*cdf0e10cSrcweir 	// Ist das Element bereits vorhanden?
130*cdf0e10cSrcweir 	SbxVariable* pRes = SbxObject::Find( rName, t );
131*cdf0e10cSrcweir 	if( !pRes && t != SbxCLASS_OBJECT )
132*cdf0e10cSrcweir 	{
133*cdf0e10cSrcweir 		// sonst suchen
134*cdf0e10cSrcweir 		Methods* p = aMethods;
135*cdf0e10cSrcweir 		short nIndex = 0;
136*cdf0e10cSrcweir 		sal_Bool bFound = sal_False;
137*cdf0e10cSrcweir 		while( p->nArgs != -1 )
138*cdf0e10cSrcweir 		{
139*cdf0e10cSrcweir 			if( rName.EqualsIgnoreCaseAscii( p->pName ) )
140*cdf0e10cSrcweir 			{
141*cdf0e10cSrcweir 				bFound = sal_True; break;
142*cdf0e10cSrcweir 			}
143*cdf0e10cSrcweir 			nIndex += ( p->nArgs & _ARGSMASK ) + 1;
144*cdf0e10cSrcweir 			p = aMethods + nIndex;
145*cdf0e10cSrcweir 		}
146*cdf0e10cSrcweir 		if( bFound )
147*cdf0e10cSrcweir 		{
148*cdf0e10cSrcweir 			// Args-Felder isolieren:
149*cdf0e10cSrcweir 			short nAccess = ( p->nArgs & _RWMASK ) >> 8;
150*cdf0e10cSrcweir 			short nType   = ( p->nArgs & _TYPEMASK );
151*cdf0e10cSrcweir 			String aName_ = String::CreateFromAscii( p->pName );
152*cdf0e10cSrcweir 			SbxClassType eCT = SbxCLASS_OBJECT;
153*cdf0e10cSrcweir 			if( nType & _PROPERTY )
154*cdf0e10cSrcweir 				eCT = SbxCLASS_PROPERTY;
155*cdf0e10cSrcweir 			else if( nType & _METHOD )
156*cdf0e10cSrcweir 				eCT = SbxCLASS_METHOD;
157*cdf0e10cSrcweir 			pRes = Make( aName_, eCT, p->eType );
158*cdf0e10cSrcweir 			// Wir setzen den Array-Index + 1, da ja noch andere
159*cdf0e10cSrcweir 			// Standard-Properties existieren, die auch aktiviert
160*cdf0e10cSrcweir 			// werden muessen.
161*cdf0e10cSrcweir 			pRes->SetUserData( nIndex + 1 );
162*cdf0e10cSrcweir 			pRes->SetFlags( nAccess );
163*cdf0e10cSrcweir 		}
164*cdf0e10cSrcweir 	}
165*cdf0e10cSrcweir 	return pRes;
166*cdf0e10cSrcweir }
167*cdf0e10cSrcweir 
168*cdf0e10cSrcweir // Aktivierung eines Elements oder Anfordern eines Infoblocks
169*cdf0e10cSrcweir 
170*cdf0e10cSrcweir void SampleObject::SFX_NOTIFY( SfxBroadcaster& rBC, const TypeId& rBCT,
171*cdf0e10cSrcweir 							 const SfxHint& rHint, const TypeId& rHT )
172*cdf0e10cSrcweir {
173*cdf0e10cSrcweir 	const SbxHint* pHint = PTR_CAST(SbxHint,&rHint);
174*cdf0e10cSrcweir 	if( pHint )
175*cdf0e10cSrcweir 	{
176*cdf0e10cSrcweir 		SbxVariable* pVar = pHint->GetVar();
177*cdf0e10cSrcweir 		SbxArray* pPar_ = pVar->GetParameters();
178*cdf0e10cSrcweir 		sal_uInt16 nIndex = (sal_uInt16) pVar->GetUserData();
179*cdf0e10cSrcweir 		// kein Index: weiterreichen!
180*cdf0e10cSrcweir 		if( nIndex )
181*cdf0e10cSrcweir 		{
182*cdf0e10cSrcweir 			sal_uIntPtr t = pHint->GetId();
183*cdf0e10cSrcweir 			if( t == SBX_HINT_INFOWANTED )
184*cdf0e10cSrcweir 				pVar->SetInfo( GetInfo( (short) pVar->GetUserData() ) );
185*cdf0e10cSrcweir 			else
186*cdf0e10cSrcweir 			{
187*cdf0e10cSrcweir 				sal_Bool bWrite = sal_False;
188*cdf0e10cSrcweir 				if( t == SBX_HINT_DATACHANGED )
189*cdf0e10cSrcweir 					bWrite = sal_True;
190*cdf0e10cSrcweir 				if( t == SBX_HINT_DATAWANTED || bWrite )
191*cdf0e10cSrcweir 				{
192*cdf0e10cSrcweir 					// Parameter-Test fuer Methoden:
193*cdf0e10cSrcweir 					sal_uInt16 nPar = aMethods[ --nIndex ].nArgs & 0x00FF;
194*cdf0e10cSrcweir 					// Element 0 ist der Returnwert
195*cdf0e10cSrcweir 					if( ( !pPar_ && nPar )
196*cdf0e10cSrcweir 					 || ( pPar_->Count() != nPar+1 ) )
197*cdf0e10cSrcweir 						SetError( SbxERR_WRONG_ARGS );
198*cdf0e10cSrcweir 					// Alles klar, man kann den Call ausfuehren
199*cdf0e10cSrcweir 					else
200*cdf0e10cSrcweir 					{
201*cdf0e10cSrcweir 						(this->*(aMethods[ nIndex ].pFunc))( pVar, pPar_, bWrite );
202*cdf0e10cSrcweir 					}
203*cdf0e10cSrcweir 				}
204*cdf0e10cSrcweir 			}
205*cdf0e10cSrcweir 		}
206*cdf0e10cSrcweir 		SbxObject::SFX_NOTIFY( rBC, rBCT, rHint, rHT );
207*cdf0e10cSrcweir 	}
208*cdf0e10cSrcweir }
209*cdf0e10cSrcweir 
210*cdf0e10cSrcweir // Zusammenbau der Infostruktur fuer einzelne Elemente
211*cdf0e10cSrcweir 
212*cdf0e10cSrcweir SbxInfo* SampleObject::GetInfo( short nIdx )
213*cdf0e10cSrcweir {
214*cdf0e10cSrcweir 	Methods* p = &aMethods[ nIdx ];
215*cdf0e10cSrcweir 	// Wenn mal eine Hilfedatei zur Verfuegung steht:
216*cdf0e10cSrcweir 	// SbxInfo* pInfo_ = new SbxInfo( Hilfedateiname, p->nHelpId );
217*cdf0e10cSrcweir 	SbxInfo* pInfo_ = new SbxInfo;
218*cdf0e10cSrcweir 	short nPar = p->nArgs & _ARGSMASK;
219*cdf0e10cSrcweir 	for( short i = 0; i < nPar; i++ )
220*cdf0e10cSrcweir 	{
221*cdf0e10cSrcweir 		p++;
222*cdf0e10cSrcweir 		String aName_ = String::CreateFromAscii( p->pName );
223*cdf0e10cSrcweir 		sal_uInt16 nFlags_ = ( p->nArgs >> 8 ) & 0x03;
224*cdf0e10cSrcweir 		if( p->nArgs & _OPT )
225*cdf0e10cSrcweir 			nFlags_ |= SBX_OPTIONAL;
226*cdf0e10cSrcweir 		pInfo_->AddParam( aName_, p->eType, nFlags_ );
227*cdf0e10cSrcweir 	}
228*cdf0e10cSrcweir 	return pInfo_;
229*cdf0e10cSrcweir }
230*cdf0e10cSrcweir 
231*cdf0e10cSrcweir ////////////////////////////////////////////////////////////////////////////
232*cdf0e10cSrcweir 
233*cdf0e10cSrcweir // Properties und Methoden legen beim Get (bPut = sal_False) den Returnwert
234*cdf0e10cSrcweir // im Element 0 des Argv ab; beim Put (bPut = sal_True) wird der Wert aus
235*cdf0e10cSrcweir // Element 0 gespeichert.
236*cdf0e10cSrcweir 
237*cdf0e10cSrcweir // Die Methoden:
238*cdf0e10cSrcweir 
239*cdf0e10cSrcweir void SampleObject::Display( SbxVariable*, SbxArray* pPar_, sal_Bool )
240*cdf0e10cSrcweir {
241*cdf0e10cSrcweir 	// GetString() loest u.U. auch einen Error aus!
242*cdf0e10cSrcweir 	String s( pPar_->Get( 1 )->GetString() );
243*cdf0e10cSrcweir 	if( !IsError() )
244*cdf0e10cSrcweir 		InfoBox( NULL, s ).Execute();
245*cdf0e10cSrcweir }
246*cdf0e10cSrcweir 
247*cdf0e10cSrcweir void SampleObject::Square( SbxVariable* pVar, SbxArray* pPar_, sal_Bool )
248*cdf0e10cSrcweir {
249*cdf0e10cSrcweir 	double n = pPar_->Get( 1 )->GetDouble();
250*cdf0e10cSrcweir 	pVar->PutDouble( n * n );
251*cdf0e10cSrcweir }
252*cdf0e10cSrcweir 
253*cdf0e10cSrcweir // Callback nach BASIC:
254*cdf0e10cSrcweir 
255*cdf0e10cSrcweir void SampleObject::Event( SbxVariable*, SbxArray* pPar_, sal_Bool )
256*cdf0e10cSrcweir {
257*cdf0e10cSrcweir 	Call( pPar_->Get( 1 )->GetString(), NULL );
258*cdf0e10cSrcweir }
259*cdf0e10cSrcweir 
260*cdf0e10cSrcweir // Neues Element anlegen
261*cdf0e10cSrcweir 
262*cdf0e10cSrcweir void SampleObject::Create( SbxVariable* pVar, SbxArray* pPar_, sal_Bool )
263*cdf0e10cSrcweir {
264*cdf0e10cSrcweir 	pVar->PutObject(
265*cdf0e10cSrcweir 		MakeObject( pPar_->Get( 1 )->GetString(), String( RTL_CONSTASCII_USTRINGPARAM("SampleElement") ) ) );
266*cdf0e10cSrcweir }
267*cdf0e10cSrcweir 
268*cdf0e10cSrcweir // Die Factory legt unsere beiden Objekte an.
269*cdf0e10cSrcweir 
270*cdf0e10cSrcweir SbxObject* SampleObjectFac::CreateObject( const String& rClass )
271*cdf0e10cSrcweir {
272*cdf0e10cSrcweir 	if( rClass.EqualsIgnoreCaseAscii( "SampleObject" ) )
273*cdf0e10cSrcweir 		return new SampleObject( rClass );
274*cdf0e10cSrcweir 	if( rClass.EqualsIgnoreCaseAscii( "SampleElement" ) )
275*cdf0e10cSrcweir 		return new SampleElement( rClass );
276*cdf0e10cSrcweir 	return NULL;
277*cdf0e10cSrcweir }
278*cdf0e10cSrcweir 
279