website.java

源码为Eclipse开源开发平台桌面开发工具SWT的源代码,

	* the Internet Explorer shortcuts. F5 causes refresh).  This behaviour is undesired when
	* rendering HTML in memory as it causes the empty page about:blank page to be reloaded.  
	* The workaround is to block the default F5 handling by IE when the URL is about:blank.
	*/
	OleAutomation auto = new OleAutomation(this);
	int[] rgdispid = auto.getIDsOfNames(new String[] { "LocationURL" }); //$NON-NLS-1$
	Variant pVarResult = auto.getProperty(rgdispid[0]);
	auto.dispose();
	int result = COM.S_FALSE;
	if (pVarResult != null) {
		if (pVarResult.getType() == OLE.VT_BSTR) {
			String url = pVarResult.getString();
			if (url.equals(Browser.ABOUT_BLANK)) {
				MSG msg = new MSG();
				OS.MoveMemory(msg, lpMsg, MSG.sizeof);
				if (msg.message == OS.WM_KEYDOWN && msg.wParam == OS.VK_F5) result = COM.S_OK;
			}
		}
		pVarResult.dispose();
	}
	return result;
}

int TranslateUrl(int dwTranslate, int pchURLIn, int ppchURLOut) {
	return COM.E_NOTIMPL;
}

int UpdateUI() {
	return COM.E_NOTIMPL;
}

/* IDocHostShowUI */

int ShowMessage(int hwnd, int lpstrText, int lpstrCaption, int dwType, int lpstrHelpFile, int dwHelpContext, int plResult) {
	/*
	* Feature on IE.  Executing certain ActiveX controls such as the Java or Flash plugin from within
	* a java VM can cause the application to crash.  The workaround is to disallow all ActiveX controls.
	* 
	* Feature on IE.  When IE navigates to a website that contains an ActiveX that is prevented from
	* being executed, IE displays a message "Your current security settings prohibit running ActiveX 
	* controls on this page ...".  The workaround is to selectively block this alert as indicated
	* in the MSDN article "WebBrowser customization".
	*/
	/* resource identifier in shdoclc.dll for window caption "Your current security settings prohibit 
	 * running ActiveX controls on this page ..." 
	 */
	int IDS_MESSAGE_BOX_CAPTION = 8033;
		if (lpstrText != 0) {
		TCHAR lpLibFileName = new TCHAR (0, "SHDOCLC.DLL", true); //$NON-NLS-1$
		int hModule = OS.LoadLibrary(lpLibFileName);
		if (hModule != 0) {
			/* 
			* Note.  lpstrText is a LPOLESTR, i.e. a null terminated unicode string LPWSTR, i.e. a WCHAR*.
			* It is not a BSTR.  A BSTR is a null terminated unicode string that contains its length
			* at the beginning. 
			*/
			int cnt = OS.wcslen(lpstrText);
			char[] buffer = new char[cnt];
			/* 
			* Note.  lpstrText is unicode on both unicode and ansi platforms.
			* The nbr of chars is multiplied by the constant 2 and not by TCHAR.sizeof since
			* TCHAR.sizeof returns 1 on ansi platforms.
			*/
			OS.MoveMemory(buffer, lpstrText, cnt * 2);
			String text = new String(buffer);
			/* provide a buffer large enough to hold the string to compare to and a null terminated character */
			int length = (OS.IsUnicode ? cnt : OS.WideCharToMultiByte (OS.CP_ACP, 0, buffer, cnt, 0, 0, null, null)) + 1;

			TCHAR lpBuffer = new TCHAR(0, length);
			int result = OS.LoadString(hModule, IDS_MESSAGE_BOX_CAPTION, lpBuffer, length);
			OS.FreeLibrary(hModule);
			return result > 0 && text.equals(lpBuffer.toString(0, result)) ? COM.S_OK : COM.S_FALSE;
		}
	}
	return COM.S_FALSE;
}

/* Note.  One of the arguments of ShowHelp is a POINT struct and not a pointer to a POINT struct. Because
 * of the way Callback gets int parameters from a va_list of C arguments 2 integer arguments must be declared,
 * ptMouse_x and ptMouse_y. Otherwise the Browser crashes when the user presses F1 to invoke
 * the help.
 */
int ShowHelp(int hwnd, int pszHelpFile, int uCommand, int dwData, int ptMouse_x, int ptMouse_y, int pDispatchObjectHit) {
	return COM.S_OK;
}

/* IServiceProvider */

int QueryService(int guidService, int riid, int ppvObject) {
	if (riid == 0 || ppvObject == 0) return COM.E_INVALIDARG;
	GUID guid = new GUID();
	COM.MoveMemory(guid, riid, GUID.sizeof);
	if (COM.IsEqualGUID(guid, COM.IIDIInternetSecurityManager)) {
		COM.MoveMemory(ppvObject, new int[] {iInternetSecurityManager.getAddress()}, 4);
		AddRef();
		return COM.S_OK;
	}
	COM.MoveMemory(ppvObject, new int[] {0}, 4);
	return COM.E_NOINTERFACE;
}

/* IInternetSecurityManager */

int SetSecuritySite(int pSite) {
	return Browser.INET_E_DEFAULT_ACTION;
}

int GetSecuritySite(int ppSite) {
	return Browser.INET_E_DEFAULT_ACTION;
}

int MapUrlToZone(int pwszUrl, int pdwZone, int dwFlags) {
	int cnt = OS.wcslen(pwszUrl);
	char[] buffer = new char[cnt];
	/* 
	* Note.  pwszUrl is unicode on both unicode and ansi platforms.
	* The nbr of chars is multiplied by the constant 2 and not by TCHAR.sizeof since
	* TCHAR.sizeof returns 1 on ansi platforms.
	*/
	OS.MoveMemory(buffer, pwszUrl, cnt * 2);
	String url = new String(buffer);
	
	/*
	* Feature in IE 6 sp1.  HTML rendered in memory
	* does not enable local links but the exact same
	* HTML document loaded through a local file is
	* permitted to follow local links.  The workaround is
	* to return URLZONE_INTRANET instead of the default
	* value URLZONE_LOCAL_MACHINE.
	*/
	int zone = Browser.URLZONE_INTRANET;
	
	/*
	* Note.  Some ActiveX plugins crash when executing
	* inside the embedded explorer itself running into
	* a JVM.  The current workaround is to detect when
	* such ActiveX is about to be started and refuse
	* to execute it.
	* ActiveX blocked in an object tag:
	* - Shockwave director plugin (mime: application/x-director)
	* - Java plugin
	*/

	if (url.startsWith(Browser.URL_DIRECTOR) ||
		(url.startsWith(Browser.URL_JAVA) && url.indexOf(Browser.URL_CAB) != -1) ||
		(url.startsWith(Browser.URL_JAVA_15) && url.indexOf(Browser.URL_CAB) != -1)) {
		zone = Browser.URLZONE_LOCAL_MACHINE;
	}
	COM.MoveMemory(pdwZone, new int[] {zone}, 4);
	return COM.S_OK;
}

int GetSecurityId(int pwszUrl, int pbSecurityId, int pcbSecurityId, int dwReserved) {
	return Browser.INET_E_DEFAULT_ACTION;
}

int ProcessUrlAction(int pwszUrl, int dwAction, int pPolicy, int cbPolicy, int pContext, int cbContext, int dwFlags, int dwReserved) {
	/*
	* Feature in IE 6 sp1.  HTML rendered in memory
	* containing an OBJECT tag referring to a local file
	* brings up a warning dialog asking the user whether
	* it should proceed or not.  The workaround is to
	* set the policy to URLPOLICY_ALLOW in this case (dwAction
	* value of 0x1406).
	* 
	* Feature in IE. Security Patches and user settings
	* affect the way the embedded web control behaves.  The current
	* approach is to consider the content trusted and allow
	* all URLs by default.
	*/
	int policy = Browser.URLPOLICY_ALLOW;
	/*
	* Note. The URLACTION_JAVA flags refer to the applet tag that normally resolve to
	* the Microsoft VM, not to the java OBJECT tag that resolves to the
	* Sun plugin. Return URLPOLICY_JAVA_LOW to authorize applets instead of
	* URLPOLICY_ALLOW that is interpreted as URLPOLICY_JAVA_PROHIBIT in this
	* context. 
	*/
	if (dwAction >= Browser.URLACTION_JAVA_MIN && dwAction <= Browser.URLACTION_JAVA_MAX) {
		policy = Browser.URLPOLICY_JAVA_LOW;
	}
	if (dwAction >= Browser.URLACTION_ACTIVEX_MIN && dwAction <= Browser.URLACTION_ACTIVEX_MAX) {
		int cnt = OS.wcslen(pwszUrl);
		char[] buffer = new char[cnt];
		/* 
		* Note.  pwszUrl is unicode on both unicode and ansi platforms.
		* The nbr of chars is multiplied by the constant 2 and not by TCHAR.sizeof since
		* TCHAR.sizeof returns 1 on ansi platforms.
		*/
		OS.MoveMemory(buffer, pwszUrl, cnt * 2);
		String url = new String(buffer);
		/*
		* Note.  Some ActiveX plugins crash when executing
		* inside the embedded explorer itself running into
		* a JVM.  The current workaround is to detect when
		* such ActiveX is about to be started and refuse
		* to execute it.
		* ActiveX blocked based on URL extension:
		* - Shockwave director plugin (mime: application/x-director)
		*/
		if (url.endsWith(".dcr")) policy = Browser.URLPOLICY_DISALLOW; //$NON-NLS-1$
	}
	if (cbPolicy >= 4) COM.MoveMemory(pPolicy, new int[] {policy}, 4);
	return COM.S_OK;
}

int QueryCustomPolicy(int pwszUrl, int guidKey, int ppPolicy, int pcbPolicy, int pContext, int cbContext, int dwReserved) {
	return Browser.INET_E_DEFAULT_ACTION;
}

int SetZoneMapping(int dwZone, int lpszPattern, int dwFlags) {
	return Browser.INET_E_DEFAULT_ACTION;
}

int GetZoneMappings(int dwZone, int ppenumString, int dwFlags) {
	return COM.E_NOTIMPL;
}
}