262 lines
7.3 KiB
C++
262 lines
7.3 KiB
C++
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/******************************************************************************
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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HelpHost.cpp
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Abstract:
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This file contains the implementation of the CPCHHelpHost class,
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UI-side version of IHelpHost.
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Revision History:
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Davide Massarenti (Dmassare) 11/03/2000
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created
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******************************************************************************/
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#include "stdafx.h"
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////////////////////////////////////////////////////////////////////////////////
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#define GRANT_ACCESS_AND_CALL(ext,func,fail) \
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HRESULT hr; \
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\
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if(ext) \
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{ \
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CPCHHelpCenterExternal::TLS* tlsOld = ext->GetTLS(); \
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CPCHHelpCenterExternal::TLS tlsNew; ext->SetTLS( &tlsNew ); \
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\
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tlsNew.m_fSystem = true; \
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tlsNew.m_fTrusted = true; \
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\
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hr = ext->func; \
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\
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ext->SetTLS( tlsOld ); \
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} \
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else \
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{ \
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hr = fail; \
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} \
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\
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return hr
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////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////
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HelpHost::Main::Main()
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{
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// CComPtr<IRunningObjectTable> m_rt;
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// CComPtr<IMoniker> m_moniker;
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m_dwRegister = 0; // DWORD m_dwRegister;
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//
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m_External = NULL; // CPCHHelpCenterExternal* m_External;
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//
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m_hEvent = NULL; // HANDLE m_hEvent;
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// bool m_comps[COMPID_MAX];
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::ZeroMemory( m_comps, sizeof(m_comps) ); // Initialize to false...
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}
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HelpHost::Main::~Main()
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{
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Passivate();
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if(m_hEvent) ::CloseHandle( m_hEvent );
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}
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HRESULT HelpHost::Main::Initialize( /*[in]*/ CPCHHelpCenterExternal* external )
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{
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__HCP_FUNC_ENTRY( "HelpHost::Main::Initialize" );
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HRESULT hr;
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m_External = external;
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//
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// Get a pointer to the ROT and create a class moniker.
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//
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__MPC_EXIT_IF_METHOD_FAILS(hr, ::GetRunningObjectTable( 0, &m_rt ));
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__MPC_EXIT_IF_CALL_RETURNS_NULL(hr, (m_hEvent = ::CreateEvent( NULL, FALSE, TRUE, NULL )));
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hr = S_OK;
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__HCP_FUNC_CLEANUP;
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__HCP_FUNC_EXIT(hr);
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}
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void HelpHost::Main::Passivate()
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{
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if(m_rt)
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{
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if(m_dwRegister)
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{
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(void)m_rt->Revoke( m_dwRegister );
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m_dwRegister = NULL;
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}
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}
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m_rt .Release();
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m_moniker.Release();
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m_External = NULL;
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}
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HRESULT HelpHost::Main::Locate( /*[in]*/ CLSID& clsid, /*[out]*/ CComPtr<IPCHHelpHost>& pVal )
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{
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__HCP_FUNC_ENTRY( "HelpHost::Main::Locate" );
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HRESULT hr;
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CComPtr<IUnknown> obj;
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m_moniker.Release();
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__MPC_EXIT_IF_METHOD_FAILS(hr, ::CreateClassMoniker( clsid, &m_moniker ));
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if(SUCCEEDED(m_rt->GetObject( m_moniker, &obj )) && obj)
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{
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__MPC_EXIT_IF_METHOD_FAILS(hr, obj.QueryInterface( &pVal ));
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}
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else
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{
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__MPC_SET_ERROR_AND_EXIT(hr, E_NOINTERFACE);
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}
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hr = S_OK;
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__HCP_FUNC_CLEANUP;
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__HCP_FUNC_EXIT(hr);
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}
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HRESULT HelpHost::Main::Register( /*[in]*/ CLSID& clsid )
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{
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__HCP_FUNC_ENTRY( "HelpHost::Main::Register" );
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HRESULT hr;
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m_moniker.Release();
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__MPC_EXIT_IF_METHOD_FAILS(hr, ::CreateClassMoniker( clsid, &m_moniker ));
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__MPC_EXIT_IF_METHOD_FAILS(hr, m_rt->Register( ROTFLAGS_REGISTRATIONKEEPSALIVE, this, m_moniker, &m_dwRegister ));
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hr = S_OK;
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__HCP_FUNC_CLEANUP;
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__HCP_FUNC_EXIT(hr);
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}
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////////////////////
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void HelpHost::Main::ChangeStatus( /*[in]*/ LPCWSTR szComp, /*[in]*/ bool fStatus )
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{
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static struct
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{
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LPCWSTR szName;
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CompId comp;
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} s_lookup[] =
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{
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{ L"NAVBAR" , COMPID_NAVBAR },
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{ L"MININAVBAR", COMPID_MININAVBAR },
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{ L"CONTEXT" , COMPID_CONTEXT },
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{ L"CONTENTS" , COMPID_CONTENTS },
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{ L"HHWINDOW" , COMPID_HHWINDOW },
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{ L"FIRSTPAGE" , COMPID_FIRSTPAGE },
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{ L"HOMEPAGE" , COMPID_HOMEPAGE },
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{ L"SUBSITE" , COMPID_SUBSITE },
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{ L"SEARCH" , COMPID_SEARCH },
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{ L"INDEX" , COMPID_INDEX },
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{ L"FAVORITES" , COMPID_FAVORITES },
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{ L"HISTORY" , COMPID_HISTORY },
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{ L"CHANNELS" , COMPID_CHANNELS },
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{ L"OPTIONS" , COMPID_OPTIONS }
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};
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if(szComp == NULL) return;
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for(int i=0; i<ARRAYSIZE(s_lookup); i++)
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{
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if(!_wcsicmp( szComp, s_lookup[i].szName ))
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{
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ChangeStatus( s_lookup[i].comp, fStatus );
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break;
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}
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}
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}
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void HelpHost::Main::ChangeStatus( /*[in]*/ CompId idComp, /*[in]*/ bool fStatus )
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{
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MPC::SmartLock<_ThreadModel> lock( this );
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if(idComp < COMPID_MAX)
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{
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m_comps[idComp] = fStatus;
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if(m_hEvent)
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{
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::SetEvent( m_hEvent );
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}
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}
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}
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bool HelpHost::Main::GetStatus( /*[in]*/ CompId idComp )
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{
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MPC::SmartLock<_ThreadModel> lock( this );
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if(idComp >= COMPID_MAX) return false;
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return m_comps[idComp];
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}
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bool HelpHost::Main::WaitUntilLoaded( /*[in]*/ CompId idComp, /*[in]*/ DWORD dwTimeout )
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{
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MPC::SmartLock<_ThreadModel> lock( this );
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if(idComp >= COMPID_MAX) return false;
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//
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// On machine without enough RAM, increase the timeout.
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//
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{
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MEMORYSTATUSEX ms;
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::ZeroMemory( &ms, sizeof(ms) ); ms.dwLength = sizeof(ms);
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if(::GlobalMemoryStatusEx( &ms ))
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{
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if(ms.ullAvailPhys < 32 * 1024 * 1024) dwTimeout *= 10;
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}
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}
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while(m_comps[idComp] == false)
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{
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//
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// Wait without holding a lock on the object.
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//
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lock = NULL;
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if(MPC::WaitForSingleObject( m_hEvent, dwTimeout ) != WAIT_OBJECT_0) return false;
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lock = this;
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}
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return true;
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}
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////////////////////
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STDMETHODIMP HelpHost::Main::DisplayTopicFromURL( /*[in]*/ BSTR url, /*[in]*/ VARIANT options )
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{
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GRANT_ACCESS_AND_CALL(m_External, ChangeContext( HSCCONTEXT_CONTENT, NULL, url, /*fAlsoContent*/true ), S_FALSE);
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}
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