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RetroZilla/extensions/xmlterm/base/mozXMLTermUtils.cpp
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is XMLterm.
*
* The Initial Developer of the Original Code is
* Ramalingam Saravanan.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
// mozXMLTermUtils.cpp: XMLTerm utilities implementation
#include "nscore.h"
#include "nspr.h"
#include "prlog.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIContentViewer.h"
#include "nsIDocumentViewer.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIDeviceContext.h"
#include "nsIPrincipal.h"
#include "nsIScriptContext.h"
#include "nsIScriptGlobalObject.h"
#include "nsIDOMWindowCollection.h"
#include "nsIDOMElement.h"
#include "nsIDocument.h"
#include "mozXMLT.h"
#include "mozXMLTermUtils.h"
/////////////////////////////////////////////////////////////////////////
/** Gets DOM window for doc shell
* @param aDocShell doc shell
* @param aDOMWindow returned DOM window (frame)
* @return NS_OK on success
*/
NS_EXPORT nsresult
mozXMLTermUtils::ConvertDocShellToDOMWindow(nsIDocShell* aDocShell,
nsIDOMWindowInternal** aDOMWindow)
{
XMLT_LOG(mozXMLTermUtils::ConvertDocShellToDOMWindow,30,("\n"));
if (!aDOMWindow)
return NS_ERROR_FAILURE;
*aDOMWindow = nsnull;
nsCOMPtr<nsIScriptGlobalObject> scriptGlobalObject(do_GetInterface(aDocShell));
nsCOMPtr<nsIDOMWindowInternal> domWindow(do_QueryInterface(scriptGlobalObject));
if (!domWindow)
return NS_ERROR_FAILURE;
*aDOMWindow = domWindow.get();
NS_ADDREF(*aDOMWindow);
return NS_OK;
}
/** Gets doc shell for DOM window
* @param aDOMWindow DOM window (frame)
* @param aDocShell returned doc shell
* @return NS_OK on success
*/
NS_EXPORT nsresult
mozXMLTermUtils::ConvertDOMWindowToDocShell(nsIDOMWindowInternal* aDOMWindow,
nsIDocShell** aDocShell)
{
XMLT_LOG(mozXMLTermUtils::ConvertDOMWindowToDocShell,30,("\n"));
nsCOMPtr<nsIScriptGlobalObject> globalObject = do_QueryInterface(aDOMWindow);
if (!globalObject)
return NS_ERROR_FAILURE;
*aDocShell = globalObject->GetDocShell();
if (!*aDocShell)
return NS_ERROR_FAILURE;
NS_ADDREF(*aDocShell);
return NS_OK;
}
/** Locates named inner DOM window (frame) inside outer DOM window
* @param outerDOMWindow outer DOM window (frame)
* @param innerFrameName name of inner frame to be returned
* @param innerDOMWindow returned inner DOM window (frame)
* @return NS_OK on success
*/
NS_EXPORT nsresult
mozXMLTermUtils::GetInnerDOMWindow(nsIDOMWindowInternal* outerDOMWindow,
const nsString& innerFrameName,
nsIDOMWindowInternal** innerDOMWindow)
{
nsresult result;
XMLT_LOG(mozXMLTermUtils::GetInnerDOMWindow,30,("\n"));
nsCOMPtr<nsIDOMWindowCollection> innerDOMWindowList;
result = outerDOMWindow->GetFrames(getter_AddRefs(innerDOMWindowList));
if (NS_FAILED(result) || !innerDOMWindowList)
return NS_ERROR_FAILURE;
PRUint32 frameCount = 0;
result = innerDOMWindowList->GetLength(&frameCount);
XMLT_LOG(mozXMLTermUtils::GetInnerDOMWindow,31,("frameCount=%d\n",
frameCount));
result = innerDOMWindowList->NamedItem(innerFrameName, (nsIDOMWindow **)innerDOMWindow);
if (NS_FAILED(result) || !*innerDOMWindow)
return NS_ERROR_FAILURE;
return NS_OK;
}
/** Gets the scrollable view for presentation context
* @param aPresContext presentation context
* @param aScrollableView returned scrollable view
* @return NS_OK on success
*/
NS_EXPORT nsresult
mozXMLTermUtils::GetPresContextScrollableView(nsPresContext* aPresContext,
nsIScrollableView** aScrollableView)
{
XMLT_LOG(mozXMLTermUtils::GetPresContextScrollableView,30,("\n"));
if (!aScrollableView)
return NS_ERROR_FAILURE;
*aScrollableView = nsnull;
nsIPresShell *presShell = aPresContext->GetPresShell();
if (!presShell)
return NS_ERROR_FAILURE;
nsIViewManager* viewManager = presShell->GetViewManager();
if (!viewManager)
return NS_ERROR_FAILURE;
return viewManager->GetRootScrollableView(aScrollableView);
}
/** Gets the device context for presentation context
* @param aPresContext presentation context
* @param aDeviceContext returned device context
* @return NS_OK on success
*/
NS_EXPORT nsresult
mozXMLTermUtils::GetPresContextDeviceContext(nsPresContext* aPresContext,
nsIDeviceContext** aDeviceContext)
{
nsresult result;
XMLT_LOG(mozXMLTermUtils::GetPresContextScrollableView,30,("\n"));
if (!aDeviceContext)
return NS_ERROR_FAILURE;
*aDeviceContext = nsnull;
nsIViewManager* viewManager = aPresContext->GetViewManager();
if (!viewManager)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDeviceContext> deviceContext;
result = viewManager->GetDeviceContext(*getter_AddRefs(deviceContext));
if (NS_FAILED(result) || !deviceContext)
return NS_ERROR_FAILURE;
*aDeviceContext = deviceContext.get();
NS_ADDREF(*aDeviceContext);
return NS_OK;
}
/** Gets the script context for document
* @param aDOMDocument document providing context
* @param aScriptContext returned script context
* @return NS_OK on success
*/
NS_EXPORT nsresult
mozXMLTermUtils::GetScriptContext(nsIDOMDocument* aDOMDocument,
nsIScriptContext** aScriptContext)
{
XMLT_LOG(mozXMLTermUtils::GetScriptContext,20,("\n"));
nsCOMPtr<nsIDocument> doc ( do_QueryInterface(aDOMDocument) );
if (!doc)
return NS_ERROR_FAILURE;
nsIScriptGlobalObject *scriptGlobalObject = doc->GetScriptGlobalObject();
if (!scriptGlobalObject)
return NS_ERROR_FAILURE;
*aScriptContext = scriptGlobalObject->GetContext();
NS_IF_ADDREF(*aScriptContext);
return NS_OK;
}
/** Executes script in specified document's context.
* @param aDOMDocument document providing context for script execution
* @param aScript string to be executed
* @param aOutput output string produced by script execution
* @return NS_OK if script was valid and got executed properly
*/
NS_EXPORT nsresult
mozXMLTermUtils::ExecuteScript(nsIDOMDocument* aDOMDocument,
const nsString& aScript,
nsString& aOutput)
{
nsresult result;
XMLT_LOG(mozXMLTermUtils::ExecuteScript,20,("\n"));
// Get document principal
nsCOMPtr<nsIDocument> doc = do_QueryInterface(aDOMDocument);
if (!doc)
return NS_ERROR_FAILURE;
nsIPrincipal *docPrincipal = doc->GetPrincipal();
if (!docPrincipal)
return NS_ERROR_FAILURE;
// Get document script context
nsCOMPtr<nsIScriptContext> scriptContext;
result = GetScriptContext(aDOMDocument, getter_AddRefs(scriptContext));
if (NS_FAILED(result) || !scriptContext)
return NS_ERROR_FAILURE;
// Execute script
PRBool isUndefined = PR_FALSE;
const char* URL = "";
result = scriptContext->EvaluateString(aScript, (void *) nsnull,
docPrincipal, URL, 0, nsnull,
&aOutput, &isUndefined);
XMLT_LOG(mozXMLTermUtils::ExecuteScript,21,("result=0x%x,isUndefined=0x%x\n",
result, isUndefined));
return result;
}
/** Returns the specified attribute value associated with a DOM node,
* or a null string if the attribute is not defined, or if the DOM node
* is not an element.
* @param aDOMNode node whose attribute is to be determined
* @param aAttName attribute to be determined. Must be ASCII.
* @param aAttValue output attribute value
* @return NS_OK if no errors occurred
*/
NS_EXPORT nsresult
mozXMLTermUtils::GetNodeAttribute(nsIDOMNode* aDOMNode,
const char* aAttName,
nsString& aAttValue)
{
XMLT_LOG(mozXMLTermUtils::GetNodeAttribute,20,("aAttName=%s\n", aAttName));
nsCOMPtr<nsIDOMElement> domElement = do_QueryInterface(aDOMNode);
if (!domElement) {
aAttValue.SetLength(0);
return NS_OK;
}
nsAutoString attName;
attName.AssignASCII(aAttName);
return domElement->GetAttribute(attName, aAttValue);
}
/** Returns a timestamp string containing the local time, if at least
* deltaSec seconds have elapsed since the last timestamp. Otherwise,
* a null string is returned.
* @param deltaSec minimum elapsed seconds since last timestamp (>=0)
* @param lastTime in/out parameter containing time of last timestamp
* @param aTimeStamp returned timestamp string
* @return NS_OK on success
*/
NS_IMETHODIMP mozXMLTermUtils::TimeStamp(PRInt32 deltaSec, PRTime& lastTime,
nsString& aTimeStamp)
{
static const PRInt32 DATE_LEN = 19;
PRTime deltaTime ;
char dateStr[DATE_LEN+1];
PRTime curTime, difTime;
curTime = PR_Now();
LL_SUB(difTime, curTime, lastTime);
LL_I2L(deltaTime, deltaSec*1000000);
if (LL_CMP(difTime, <, deltaTime)) {
// Not enough time has elapsed for a new time stamp
aTimeStamp.SetLength(0);
return NS_OK;
}
lastTime = curTime;
// Current local time
PRExplodedTime localTime;
PR_ExplodeTime(curTime, PR_LocalTimeParameters, &localTime);
PRInt32 nWritten = PR_snprintf(dateStr, DATE_LEN+1,
"%02d:%02d:%02d %02d/%02d/%04d", // XXX i18n!
localTime.tm_hour, localTime.tm_min, localTime.tm_sec,
localTime.tm_mday, localTime.tm_month+1, localTime.tm_year);
if (nWritten != DATE_LEN)
return NS_ERROR_FAILURE;
XMLT_LOG(mozXMLTermUtils::LocalTime,99,("localTime=%s\n", dateStr));
aTimeStamp.AssignASCII(dateStr);
return NS_OK;
}
/** Returns a string containing a 11-digit random cookie based upon the
* current local time and the elapsed execution of the program.
* @param aCookie returned cookie string
* @return NS_OK on success
*/
NS_IMETHODIMP mozXMLTermUtils::RandomCookie(nsString& aCookie)
{
// Current local time
PRExplodedTime localTime;
PR_ExplodeTime(PR_Now(), PR_LocalTimeParameters, &localTime);
PRInt32 randomNumberA = localTime.tm_sec*1000000+localTime.tm_usec;
PRIntervalTime randomNumberB = PR_IntervalNow();
XMLT_LOG(mozXMLTermUtils::RandomCookie,30,("ranA=0x%x, ranB=0x%x\n",
randomNumberA, randomNumberB));
PR_ASSERT(randomNumberA >= 0);
PR_ASSERT(randomNumberB >= 0);
static const char cookieDigits[17] = "0123456789abcdef";
char cookie[12];
int j;
for (j=0; j<6; j++) {
cookie[j] = cookieDigits[randomNumberA%16];
randomNumberA = randomNumberA/16;
}
for (j=6; j<11; j++) {
cookie[j] = cookieDigits[randomNumberB%16];
randomNumberB = randomNumberB/16;
}
cookie[11] = '\0';
aCookie.AssignASCII(cookie);
return NS_OK;
}
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