267 lines
8.4 KiB
C++
267 lines
8.4 KiB
C++
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// Functions stolen from shdocvw\util.cpp
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#include "stdafx.h"
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#pragma hdrstop
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#include "dsubscri.h"
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//+-----------------------------------------------------------------
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//
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// Helper function for getting the TopLeft point of an element from
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// mshtml.dll, and have the point reported in inside relative
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// coordinates (inside margins, borders and padding.)
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//-----------------------------------------------------------------
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HRESULT CSSOM_TopLeft(IHTMLElement * pIElem, POINT * ppt)
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{
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HRESULT hr = E_FAIL;
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IHTMLStyle *pistyle;
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if (SUCCEEDED(pIElem->get_style(&pistyle)) && pistyle) {
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VARIANT var = {0};
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if (SUCCEEDED(pistyle->get_top(&var)) && var.bstrVal) {
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ppt->y = StrToIntW(var.bstrVal);
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VariantClear(&var);
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if (SUCCEEDED(pistyle->get_left(&var)) && var.bstrVal) {
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ppt->x = StrToIntW(var.bstrVal);
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VariantClear(&var);
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hr = S_OK;
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}
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}
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pistyle->Release();
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}
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return hr;
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}
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HRESULT GetHTMLElementStrMember(IHTMLElement *pielem, LPTSTR pszName, DWORD cchSize, BSTR bstrMember)
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{
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HRESULT hr;
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VARIANT var = {0};
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if (!pielem)
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hr = E_INVALIDARG;
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else if (SUCCEEDED(hr = pielem->getAttribute(bstrMember, TRUE, &var)))
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{
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if ((VT_BSTR == var.vt) && (var.bstrVal))
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{
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#ifdef UNICODE
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StrCpyNW(pszName, (LPCWSTR)var.bstrVal, cchSize);
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#else // UNICODE
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SHUnicodeToAnsi((BSTR)var.bstrVal, pszName, cchSize);
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#endif // UNICODE
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}
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else
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hr = E_FAIL; // Try VariantChangeType?????
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VariantClear(&var);
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}
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return hr;
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}
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/******************************************************************\
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FUNCTION: IElemCheckForExistingSubscription()
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RETURN VALUE:
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S_OK - if the IHTMLElement points to a TAG that has a "subscribed_url" property
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that is subscribed.
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S_FALSE - if the IHTMLElement points to a TAG that has a
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"subscribed_url" property but the URL is not subscribed.
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E_FAIL - if the IHTMLElement points to a TAG that does not
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have a "subscribed_url" property.
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\******************************************************************/
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HRESULT IElemCheckForExistingSubscription(IHTMLElement *pielem)
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{
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HRESULT hr = E_FAIL;
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TCHAR szHTMLElementName[MAX_URL_STRING];
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if (!pielem)
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return E_INVALIDARG;
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if (SUCCEEDED(GetHTMLElementStrMember(pielem, szHTMLElementName, SIZECHARS(szHTMLElementName), (BSTR)(s_sstrSubSRCMember.wsz))))
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hr = (CheckForExistingSubscription(szHTMLElementName) ? S_OK : S_FALSE);
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return hr;
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}
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HRESULT IElemCloseDesktopComp(IHTMLElement *pielem)
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{
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HRESULT hr = E_INVALIDARG;
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TCHAR szHTMLElementID[MAX_URL_STRING];
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ASSERT(pielem);
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if (pielem &&
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SUCCEEDED(hr = GetHTMLElementStrMember(pielem, szHTMLElementID, SIZECHARS(szHTMLElementID), (BSTR)(s_sstrIDMember.wsz))))
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{
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hr = UpdateComponentFlags(szHTMLElementID, COMP_CHECKED | COMP_UNCHECKED, COMP_UNCHECKED) ? S_OK : E_FAIL;
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ASSERT(SUCCEEDED(hr));
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if (SUCCEEDED(hr))
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{
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//
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// This IElemCloseDesktopComp() is called from DeskMovr code when a component is
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// closed. If this component is the only active desktop component, then calling
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// REFRESHACTIVEDESKTOP() here will result in ActiveDesktop being turned off.
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// This will free the DeskMovr, which is an ActiveX control on the desktop web page.
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// So, when IElemCloseDesktopComp() returns to the caller, the DeskMovr code continues
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// to execute; but the object had been freed and hence a fault occurs soon.
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// The fix for this problem is to avoid refreshing the active desktop until a better
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// time. So, we post a private message to the desktop window. When that window receives
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// this message, we call REFRESHACTIVEDESKTOP().
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PostMessage(GetShellWindow(), DTM_REFRESHACTIVEDESKTOP, (WPARAM)0, (LPARAM)0);
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}
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}
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return hr;
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}
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HRESULT IElemGetSubscriptionsDialog(IHTMLElement *pielem, HWND hwnd)
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{
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HRESULT hr;
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TCHAR szHTMLElementName[MAX_URL_STRING];
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ASSERT(pielem);
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if (SUCCEEDED(hr = GetHTMLElementStrMember(pielem, szHTMLElementName, SIZECHARS(szHTMLElementName), (BSTR)(s_sstrSubSRCMember.wsz))))
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{
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ASSERT(CheckForExistingSubscription(szHTMLElementName)); // We should not have gotten this far.
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hr = ShowSubscriptionProperties(szHTMLElementName, hwnd);
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}
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return hr;
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}
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HRESULT IElemSubscribeDialog(IHTMLElement *pielem, HWND hwnd)
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{
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HRESULT hr;
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TCHAR szHTMLElementName[MAX_URL_STRING];
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ASSERT(pielem);
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hr = GetHTMLElementStrMember(pielem, szHTMLElementName, SIZECHARS(szHTMLElementName), (BSTR)(s_sstrSubSRCMember.wsz));
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if (SUCCEEDED(hr))
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{
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ASSERT(!CheckForExistingSubscription(szHTMLElementName)); // We should not have gotten this far.
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hr = CreateSubscriptionsWizard(SUBSTYPE_DESKTOPURL, szHTMLElementName, NULL, hwnd);
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}
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return hr;
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}
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HRESULT IElemUnsubscribe(IHTMLElement *pielem)
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{
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HRESULT hr;
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TCHAR szHTMLElementName[MAX_URL_STRING];
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ASSERT(pielem);
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hr = GetHTMLElementStrMember(pielem, szHTMLElementName, SIZECHARS(szHTMLElementName), (BSTR)(s_sstrSubSRCMember.wsz));
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if (SUCCEEDED(hr))
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{
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ASSERT(CheckForExistingSubscription(szHTMLElementName)); // We should not have gotten this far.
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hr = DeleteFromSubscriptionList(szHTMLElementName) ? S_OK : S_FALSE;
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}
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return hr;
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}
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HRESULT IElemUpdate(IHTMLElement *pielem)
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{
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HRESULT hr;
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TCHAR szHTMLElementName[MAX_URL_STRING];
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ASSERT(pielem);
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hr = GetHTMLElementStrMember(pielem, szHTMLElementName, SIZECHARS(szHTMLElementName), (BSTR)(s_sstrSubSRCMember.wsz));
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if (SUCCEEDED(hr))
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{
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ASSERT(CheckForExistingSubscription(szHTMLElementName)); // We should not have gotten this far.
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hr = UpdateSubscription(szHTMLElementName) ? S_OK : S_FALSE;
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}
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return hr;
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}
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HRESULT IElemOpenInNewWindow(IHTMLElement *pielem, IOleClientSite *piOCSite, BOOL fShowFrame, LONG width, LONG height)
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{
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HRESULT hr;
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TCHAR szTemp[MAX_URL_STRING];
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BSTR bstrURL;
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ASSERT(pielem);
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hr = GetHTMLElementStrMember(pielem, szTemp, SIZECHARS(szTemp), (BSTR)(s_sstrSubSRCMember.wsz));
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if (SUCCEEDED(hr) && (bstrURL = SysAllocStringT(szTemp)))
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{
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IHTMLWindow2 *pihtmlWindow2, *pihtmlWindow2New = NULL;
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BSTR bstrFeatures = 0;
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if (!fShowFrame)
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{
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wnsprintf(szTemp, ARRAYSIZE(szTemp), TEXT("height=%li, width=%li, status=no, toolbar=no, menubar=no, location=no, resizable=no"), height, width);
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bstrFeatures = SysAllocString((OLECHAR FAR *)szTemp);
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}
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hr = IUnknown_QueryService(piOCSite, SID_SHTMLWindow, IID_IHTMLWindow2, (LPVOID*)&pihtmlWindow2);
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if (SUCCEEDED(hr) && pihtmlWindow2)
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{
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pihtmlWindow2->open(bstrURL, NULL, bstrFeatures, NULL, &pihtmlWindow2New);
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pihtmlWindow2->Release();
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ATOMICRELEASE(pihtmlWindow2New);
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}
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SysFreeString(bstrURL);
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if (bstrFeatures)
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SysFreeString(bstrFeatures);
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}
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return hr;
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}
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HRESULT ShowSubscriptionProperties(LPCTSTR pszUrl, HWND hwnd)
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{
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HRESULT hr;
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ISubscriptionMgr *psm;
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if (SUCCEEDED(hr = CoCreateInstance(CLSID_SubscriptionMgr, NULL,
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CLSCTX_INPROC_SERVER, IID_ISubscriptionMgr,
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(void**)&psm)))
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{
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WCHAR wszUrl[MAX_URL_STRING];
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SHTCharToUnicode(pszUrl, wszUrl, ARRAYSIZE(wszUrl));
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hr = psm->ShowSubscriptionProperties(wszUrl, hwnd);
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psm->Release();
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}
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return hr;
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}
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HRESULT CreateSubscriptionsWizard(SUBSCRIPTIONTYPE subType, LPCTSTR pszUrl, SUBSCRIPTIONINFO *pInfo, HWND hwnd)
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{
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HRESULT hr;
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ISubscriptionMgr *psm;
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if (SUCCEEDED(hr = CoCreateInstance(CLSID_SubscriptionMgr, NULL,
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CLSCTX_INPROC_SERVER, IID_ISubscriptionMgr,
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(void**)&psm)))
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{
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WCHAR wzURL[MAX_URL_STRING];
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LPCWSTR pwzURL = wzURL;
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#ifndef UNICODE
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SHAnsiToUnicode(pszUrl, wzURL, ARRAYSIZE(wzURL));
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#else // UNICODE
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pwzURL = pszUrl;
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#endif // UNICODE
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hr = psm->CreateSubscription(hwnd, pwzURL, pwzURL, CREATESUBS_ADDTOFAVORITES, subType, pInfo);
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psm->UpdateSubscription(pwzURL);
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psm->Release();
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}
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return hr;
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}
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