#include "cwCommon.h" #include "cwLog.h" #include "cwCommonImpl.h" #include "cwMem.h" #include "cwThread.h" #include "cwWebSock.h" #include "cwWebSockSvr.h" #include "cwUi.h" #include "cwText.h" #include "cwNumericConvert.h" namespace cw { namespace ui { typedef struct ele_str { struct ele_str* parent; // pointer to parent ele - or nullptr if this ele is attached to the root ui ele unsigned uuId; // UI unique id - automatically generated and unique among all elements that are part of this ui_t object. unsigned appId; // application assigned id - application assigned id char* jsId; // javascript id } ele_t; typedef struct ui_str { websockSrv::handle_t wssH; unsigned eleAllocN; unsigned eleN; ele_t** eleA; uiCallback_t cbFunc; void* cbArg; } ui_t; ui_t* _handleToPtr( handle_t h ) { return handleToPtr(h); } rc_t _destroy( ui_t* p ) { rc_t rc = kOkRC; if( p->wssH.isValid() ) if((rc = websockSrv::destroy(p->wssH)) != kOkRC ) return rc; for(unsigned i=0; ieleN; ++i) { mem::release(p->eleA[i]->jsId); mem::release(p->eleA[i]); } mem::release(p->eleA); mem::release(p); return rc; } ele_t* _createEle( ui_t* p, ele_t* parent, unsigned appId, const char* jsId ) { ele_t* e = mem::allocZ(); e->parent = parent; e->uuId = p->eleN; e->appId = appId; e->jsId = mem::duplStr(jsId); if( p->eleN == p->eleAllocN ) { p->eleAllocN += 100; p->eleA = mem::resizeZ(p->eleA,p->eleAllocN); } p->eleA[ p->eleN ] = e; p->eleN += 1; return e; } ele_t* _uuIdToEle( ui_t* p, unsigned uuId, bool errorFl=true ) { if( uuId >= p->eleN ) { cwLogError(kInvalidIdRC,"The element uuid:%i is not valid.",uuId); return nullptr; } return p->eleA[ uuId ]; } rc_t _websockSend( ui_t* p, const char* msg ) { return websock::send( websockSrv::websockHandle( p->wssH ), kUiProtocolId, msg, strlen(msg) ); } const char* _findEleJsId( ui_t* p, unsigned uuId ) { for(unsigned i=0; ieleN; ++i) if( p->eleA[i]->uuId == uuId ) return p->eleA[i]->jsId; return nullptr; } // Print the attribute data value. template< typename T0 > unsigned format_attribute_data( char* buf, unsigned n, T0 t0 ) { return toText(buf,n,t0); } // Override format_attribute_data() for char. string data so that strings are wrapped in quotes. template<> unsigned format_attribute_data( char* buf, unsigned n, const char* t ) { unsigned i = 0; i += toText(buf+i, n-i, "\"" ); i += toText(buf+i, n-i, t ); i += toText(buf+i, n-i, "\"" ); return i; } // terminating condition for format_attributes() unsigned format_attributes(char* buf, unsigned n, unsigned i) { return i; } template unsigned format_attributes(char* buf, unsigned n, unsigned i, T0 t0, T1 t1, ARGS&&... args) { i += toText(buf+i, n-i, ",\"" ); i += toText(buf+i, n-i, t0 ); i += toText(buf+i, n-i, "\":" ); i += format_attribute_data(buf+i, n-i, t1 ); return format_attributes(buf,n,i,std::forward(args)...); } template< typename... ARGS> rc_t _createOneEle( ui_t* p, unsigned& uuIdRef, const char* eleTypeStr, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title, ARGS&&... args ) { // { op:create, parent:my_parent_id, value:{ button:{ jsId:my_jsId, appId:appId, uuId:uuId, class:clas, title:'my title' } } rc_t rc = kOkRC; const char* parentJsId = ""; ele_t* newEle = nullptr; ele_t* parentEle = nullptr; const unsigned bufN = 1024; char buf[ bufN ]; uuIdRef = kInvalidId; // if( parentUuId != kInvalidId ) { if(( parentEle = _uuIdToEle(p, parentUuId )) == nullptr ) return cwLogError( kInvalidArgRC, "Unable to locate the parent element (id:%i).", parentUuId ); parentJsId = parentEle->jsId; } newEle = _createEle( p, parentEle, appId, jsId ); unsigned i = snprintf( buf, bufN, "{ \"op\":\"create\", \"parent\":\"%s\", \"value\":{ \"%s\":{ \"jsId\":\"%s\", \"appId\":%i, \"uuId\":%i, \"class\":\"%s\", \"title\":\"%s\" ", parentJsId, eleTypeStr, jsId, appId, newEle->uuId, clas, title ); i = format_attributes(buf, bufN, i, std::forward(args)...); toText(buf+i, bufN-i, "}}}"); printf("%s\n",buf); rc = _websockSend( p, buf ); uuIdRef = newEle->uuId; return rc; } ele_t* _parse_value_msg( ui_t* p, value_t& valueRef, const char* msg ) { rc_t rc = kOkRC; char argType = 0; ele_t* ele = nullptr; unsigned eleUuId = kInvalidId; valueRef.tid = kInvalidTId; if( msg == nullptr ) { cwLogWarning("Empty message received from UI."); return nullptr; } // locate the colon prior to the value const char* s = strchr(msg,':'); if( s == nullptr || sscanf(msg, "value %i %c ",&eleUuId,&argType) != 2 ) { cwLogError(kSyntaxErrorRC,"Invalid message from UI: %s.", msg ); goto errLabel; } // advance s past the colon s += 1; // parse the argument switch( argType ) { case 'b': if((rc = string_to_number(s,valueRef.u.b)) == kOkRC ) valueRef.tid = kBoolTId; break; case 'i': if((rc = string_to_number(s,valueRef.u.i)) == kOkRC ) valueRef.tid = kIntTId; break; case 'u': if((rc = string_to_number(s,valueRef.u.u)) == kOkRC ) valueRef.tid = kUIntTId; break; case 'f': if((rc = string_to_number(s,valueRef.u.f)) == kOkRC ) valueRef.tid = kFloatTId; break; case 'd': if((rc = string_to_number(s,valueRef.u.d)) == kOkRC ) valueRef.tid = kDoubleTId; break; case 's': if((valueRef.u.s = nextNonWhiteChar(s)) == nullptr ) valueRef.tid = kStringTId; break; default: rc = cwLogError(kInvalidIdRC,"Unknown value type '%c' in message from UI.", argType ); goto errLabel; } // locate the element record if((ele = _uuIdToEle( p, eleUuId )) == nullptr ) { cwLogError(kInvalidIdRC,"UI message elment not found."); goto errLabel; } errLabel: return ele; } void _websockCb( void* cbArg, unsigned protocolId, unsigned connectionId, websock::msgTypeId_t msg_type, const void* msg, unsigned byteN ) { ui_t* p = (ui_t*)cbArg; opId_t opId = kInvalidOpId; unsigned eleUuId = kInvalidId; unsigned eleAppId = kInvalidId; unsigned parentEleAppId = kInvalidId; value_t value; switch( msg_type ) { case websock::kConnectTId: opId = kConnectOpId; break; case websock::kDisconnectTId: opId = kDisconnectOpId; break; case websock::kMessageTId: { ele_t* ele; if( textCompare((const char*)msg,"init",strlen("init")) == 0 ) { opId = kInitOpId; } else { opId = kValueOpId; if((ele = _parse_value_msg(p, value, (const char*)msg )) == nullptr ) cwLogError(kOpFailRC,"UI Value message parse failed."); else { eleUuId = ele->uuId; eleAppId = ele->appId; parentEleAppId = ele->parent == nullptr ? kInvalidId : ele->parent->appId; } } } break; default: cwLogError(kInvalidOpRC,"Unknown websock message type:%i.", msg_type ); return; } if( p->cbFunc != nullptr ) p->cbFunc( p->cbArg, connectionId, opId, parentEleAppId, eleUuId, eleAppId, &value ); } } } cw::rc_t cw::ui::createUi( handle_t& h, unsigned port, uiCallback_t cbFunc, void* cbArg, const char* physRootDir, const char* dfltPageFn, unsigned websockTimeOutMs, unsigned rcvBufByteN, unsigned xmtBufByteN ) { rc_t rc = kOkRC; websock::protocol_t protocolA[] = { { "http", kHttpProtocolId, 0, 0 }, { "ui_protocol", kUiProtocolId, rcvBufByteN, xmtBufByteN } }; unsigned protocolN = sizeof(protocolA)/sizeof(protocolA[0]); if((rc = destroyUi(h)) != kOkRC ) return rc; ui_t* p = mem::allocZ(); if((rc = websockSrv::create(p->wssH, _websockCb, p, physRootDir, dfltPageFn, port, protocolA, protocolN, websockTimeOutMs )) != kOkRC ) { cwLogError(rc,"Internal websock server creation failed."); goto errLabel; } p->eleAllocN = 100; p->eleA = mem::allocZ( p->eleAllocN ); p->eleN = 0; p->cbFunc = cbFunc; p->cbArg = cbArg; h.set(p); errLabel: if( rc != kOkRC ) { _destroy(p); } return rc; } cw::rc_t cw::ui::start( handle_t h ) { rc_t rc = kOkRC; ui_t* p = _handleToPtr(h); if((rc = websockSrv::start(p->wssH)) != kOkRC ) rc = cwLogError(rc,"Internal websock server start failed."); return rc; } cw::rc_t cw::ui::stop( handle_t h ) { rc_t rc = kOkRC; ui_t* p = _handleToPtr(h); if((rc = websockSrv::pause(p->wssH)) != kOkRC ) rc = cwLogError(rc,"Internal websock server stop failed."); return rc; } cw::rc_t cw::ui::destroyUi( handle_t& h ) { rc_t rc = kOkRC; if( !h.isValid() ) return rc; ui_t* p = _handleToPtr(h); if((rc = _destroy(p)) != kOkRC ) return rc; h.clear(); return rc; } unsigned cw::ui::findElementAppId( handle_t h, unsigned parentUuId, const char* jsId ) { ui_t* p = _handleToPtr(h); for(unsigned i=0; ieleN; ++i) if( p->eleA[i]->parent->uuId==parentUuId && strcmp(p->eleA[i]->jsId,jsId) == 0 ) return p->eleA[i]->appId; return kInvalidId; } unsigned cw::ui::findElementUuId( handle_t h, unsigned parentUuId, const char* jsId ) { ui_t* p = _handleToPtr(h); for(unsigned i=0; ieleN; ++i) if( p->eleA[i]->parent->uuId==parentUuId && strcmp(p->eleA[i]->jsId,jsId) == 0 ) return p->eleA[i]->uuId; return kInvalidId; } unsigned cw::ui::findElementUuId( handle_t h, unsigned parentUuId, unsigned appId ) { ui_t* p = _handleToPtr(h); for(unsigned i=0; ieleN; ++i) if( p->eleA[i]->parent->uuId==parentUuId && p->eleA[i]->appId == appId ) return p->eleA[i]->uuId; return kInvalidId; } const char* cw::ui::findElementJsId( handle_t h, unsigned uuId ) { ui_t* p = _handleToPtr(h); return _findEleJsId(p,uuId); } cw::rc_t cw::ui::createDiv( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title ) { return _createOneEle( _handleToPtr(h), uuIdRef, "div", parentUuId, jsId, appId, clas, title ); } cw::rc_t cw::ui::createTitle( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title ) { return _createOneEle( _handleToPtr(h), uuIdRef, "option", parentUuId, jsId, appId, clas, title ); } cw::rc_t cw::ui::createButton( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title ) { return _createOneEle( _handleToPtr(h), uuIdRef, "button", parentUuId, jsId, appId, clas, title ); } cw::rc_t cw::ui::createCheck( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title, bool value ) { return _createOneEle( _handleToPtr(h), uuIdRef, "check", parentUuId, jsId, appId, clas, title, "value", value ); } cw::rc_t cw::ui::createSelect( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title ) { return _createOneEle( _handleToPtr(h), uuIdRef, "select", parentUuId, jsId, appId, clas, title ); } cw::rc_t cw::ui::createOption( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title ) { return _createOneEle( _handleToPtr(h), uuIdRef, "option", parentUuId, jsId, appId, clas, title ); } cw::rc_t cw::ui::createString( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title, const char* value ) { return _createOneEle( _handleToPtr(h), uuIdRef, "string", parentUuId, jsId, appId, clas, title, "value", value ); } cw::rc_t cw::ui::createNumber( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title, double value, double minValue, double maxValue, double stepValue, unsigned decpl ) { return _createOneEle( _handleToPtr(h), uuIdRef, "number", parentUuId, jsId, appId, clas, title, "value", value, "min", minValue, "max", maxValue, "step", stepValue, "decpl", decpl ); } cw::rc_t cw::ui::createProgress( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title, double value, double minValue, double maxValue ) { return _createOneEle( _handleToPtr(h), uuIdRef, "progress", parentUuId, jsId, appId, clas, title, "value", value, "min", minValue, "max", maxValue ); } cw::rc_t cw::ui::createText( handle_t h, unsigned& uuIdRef, unsigned parentUuId, const char* jsId, unsigned appId, const char* clas, const char* title ) { rc_t rc= kOkRC; return rc; }