/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 tw=80 et cindent: */
/* ***** 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 Mozilla's Element Optimizeing extension.
*
* The Initial Developer of the Original Code is the Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Oleg Romashin <romaxa@gmail.com> (original author)
* Brad Lassey <blassey@mozilla.com>
*
* 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 ***** */
#include "nsCURILoader.h"
#include "nsICategoryManager.h"
#include "nsIDOMAbstractView.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentView.h"
#include "nsIDOMHTMLElement.h"
#include "nsIDOMHTMLIFrameElement.h"
#include "nsIDOMNSDocument.h"
#include "nsIDOMNSElement.h"
#include "nsIDOMNSHTMLElement.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowCollection.h"
#include "nsIDocument.h"
#include "nsIGenericFactory.h"
#include "nsIObserver.h"
#include "nsIPresShell.h"
#include "nsIStyleSheetService.h"
#include "nsIWebProgress.h"
#include "nsIWebProgressListener.h"
#include "nsIWindowWatcher.h"
#include "nsNetUtil.h"
#include "nsRect.h"
#include "nsStringGlue.h"
#include "nsWeakReference.h"
#include "nsIWebBrowser.h"
#include "nsIObserverService.h"
#include "nsIDOMEventTarget.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMWindow.h"
//#include ".h"
#include "nsIDOM3EventTarget.h"
#include "nsIDOMKeyListener.h"
#include "nsIDOMCompositionListener.h"
#include "nsIDOMTextListener.h"
#include "nsIDOMMouseMotionListener.h"
#include "nsIDOMMouseListener.h"
#include "nsIDOMMouseEvent.h"
#include "nsIDOMNSEvent.h"
#include "nsIView.h"
#include "nsGUIEvent.h"
#include "nsIViewManager.h"
#include "nsIContentPolicy.h"
#include "nsIDocShellTreeItem.h"
#include "nsIContent.h"
#include "nsITimer.h"
const int MIN_INT =((int) (1 << (sizeof(int) * 8 - 1)));
static int g_lastX=MIN_INT;
static int g_lastY=MIN_INT;
static PRInt32 g_panning = 0;
static PRBool g_is_scrollable = PR_FALSE;
#define EM_MULT 16.
#define NS_FRAME_HAS_RELATIVE_SIZE 0x01000000
#define NS_FRAME_HAS_OPTIMIZEDVIEW 0x02000000
#define BEHAVIOR_ACCEPT nsIPermissionManager::ALLOW_ACTION
#define BEHAVIOR_REJECT nsIPermissionManager::DENY_ACTION
#define BEHAVIOR_NOFOREIGN 3
#define NUMBER_OF_TYPES 13
// TODO auto reload nsWidgetUtils in C.
class nsWidgetUtils : public nsIObserver,
public nsIDOMMouseMotionListener,
public nsIDOMMouseListener,
public nsIContentPolicy,
public nsSupportsWeakReference
{
public:
nsWidgetUtils();
virtual ~nsWidgetUtils();
// nsIDOMMouseMotionListener
NS_IMETHOD MouseMove(nsIDOMEvent* aDOMEvent);
NS_IMETHOD DragMove(nsIDOMEvent* aMouseEvent);
NS_IMETHOD HandleEvent(nsIDOMEvent* aDOMEvent);
// nsIDOMMouseListener
NS_IMETHOD MouseDown(nsIDOMEvent* aDOMEvent);
NS_IMETHOD MouseUp(nsIDOMEvent* aDOMEvent);
NS_IMETHOD MouseClick(nsIDOMEvent* aDOMEvent);
NS_IMETHOD MouseDblClick(nsIDOMEvent* aDOMEvent);
NS_IMETHOD MouseOver(nsIDOMEvent* aDOMEvent);
NS_IMETHOD MouseOut(nsIDOMEvent* aDOMEvent);
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
NS_DECL_NSICONTENTPOLICY
private:
nsresult Init(void);
void RemoveWindowListeners(nsIDOMWindow *aDOMWin);
void GetChromeEventHandler(nsIDOMWindow *aDOMWin, nsIDOMEventTarget **aChromeTarget);
void AttachWindowListeners(nsIDOMWindow *aDOMWin);
PRBool IsXULNode(nsIDOMNode *aNode, PRUint32 *aType = 0);
nsresult GetDOMWindowByNode(nsIDOMNode *aNode, nsIDOMWindow * *aDOMWindow);
nsresult UpdateFromEvent(nsIDOMEvent *aDOMEvent);
static void StopPanningCallback(nsITimer *timer, void *closure);
nsCOMPtr<nsIWidget> mWidget;
nsCOMPtr<nsIViewManager> mViewManager;
nsCOMPtr<nsITimer> mTimer;
};
nsWidgetUtils::nsWidgetUtils()
{
Init();
}
NS_IMETHODIMP
nsWidgetUtils::Init()
{
nsresult rv;
nsCOMPtr<nsIObserverService> obsSvc =
do_GetService("@mozilla.org/observer-service;1");
NS_ENSURE_STATE(obsSvc);
rv = obsSvc->AddObserver(this, "domwindowopened", PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
rv = obsSvc->AddObserver(this, "domwindowclosed", PR_FALSE);
NS_ENSURE_SUCCESS(rv, rv);
mTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
}
nsresult
nsWidgetUtils::UpdateFromEvent(nsIDOMEvent *aDOMEvent)
{
nsCOMPtr <nsIDOMMouseEvent> mouseEvent;
mouseEvent = do_QueryInterface(aDOMEvent);
if (!mouseEvent)
return NS_OK;
((nsIDOMMouseEvent*)mouseEvent)->GetScreenX(&g_lastX);
((nsIDOMMouseEvent*)mouseEvent)->GetScreenY(&g_lastY);
nsCOMPtr<nsIDOMWindow> mWindow;
nsCOMPtr<nsIDOMNode> mNode;
nsCOMPtr<nsIDOMNode> mOrigNode;
PRUint32 type = 0;
PRBool isXul = PR_FALSE;
{
nsCOMPtr <nsIDOMNSEvent> aEvent = do_QueryInterface(aDOMEvent);
nsCOMPtr<nsIDOMEventTarget> eventOrigTarget;
if (aEvent)
aEvent->GetOriginalTarget(getter_AddRefs(eventOrigTarget));
if (eventOrigTarget)
mOrigNode = do_QueryInterface(eventOrigTarget);
isXul = IsXULNode(mOrigNode, &type);
}
if (isXul)
return NS_ERROR_FAILURE;
nsCOMPtr<nsIDOMEventTarget> eventTarget;
aDOMEvent->GetTarget(getter_AddRefs(eventTarget));
if (eventTarget)
mNode = do_QueryInterface(eventTarget);
if (!mNode)
return NS_OK;
GetDOMWindowByNode(mNode, getter_AddRefs(mWindow));
if (!mWindow)
return NS_OK;
nsCOMPtr<nsIDocument> doc;
nsCOMPtr<nsIDOMDocument> domDoc;
mWindow->GetDocument(getter_AddRefs(domDoc));
doc = do_QueryInterface(domDoc);
if (!doc) return NS_OK;
// the only case where there could be more shells in printpreview
nsIPresShell *shell = doc->GetPrimaryShell();
NS_ENSURE_TRUE(shell, NS_ERROR_FAILURE);
mViewManager = shell->GetViewManager();
NS_ENSURE_TRUE(mViewManager, NS_ERROR_FAILURE);
mViewManager->GetRootWidget(getter_AddRefs(mWidget));
NS_ENSURE_TRUE(mWidget, NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::MouseDown(nsIDOMEvent* aDOMEvent)
{
g_is_scrollable = PR_FALSE;
// Return TRUE from your signal handler to mark the event as consumed.
if (NS_FAILED(UpdateFromEvent(aDOMEvent)))
return NS_OK;
g_is_scrollable = PR_TRUE;
if (g_is_scrollable) {
aDOMEvent->StopPropagation();
aDOMEvent->PreventDefault();
}
return NS_OK;
}
/* static */ void
nsWidgetUtils::StopPanningCallback(nsITimer *timer, void *closure)
{
g_panning = PR_FALSE;
}
NS_IMETHODIMP
nsWidgetUtils::MouseUp(nsIDOMEvent* aDOMEvent)
{
nsCOMPtr <nsIDOMMouseEvent> mouseEvent;
mouseEvent = do_QueryInterface(aDOMEvent);
if (!mouseEvent)
return NS_OK;
// Return TRUE from your signal handler to mark the event as consumed.
g_lastX = MIN_INT;
g_lastY = MIN_INT;
g_is_scrollable = PR_FALSE;
if (g_panning) {
aDOMEvent->StopPropagation();
aDOMEvent->PreventDefault();
nsresult rv;
if (mTimer) {
rv = mTimer->InitWithFuncCallback(nsWidgetUtils::StopPanningCallback,
nsnull, 500, nsITimer::TYPE_ONE_SHOT);
if (NS_SUCCEEDED(rv))
return NS_OK;
}
g_panning = PR_FALSE;
}
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::MouseMove(nsIDOMEvent* aDOMEvent)
{
if (!g_is_scrollable) return NS_OK;
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aDOMEvent);
if (!mouseEvent)
return NS_OK;
int x, y;
((nsIDOMMouseEvent*)mouseEvent)->GetScreenX(&x);
((nsIDOMMouseEvent*)mouseEvent)->GetScreenY(&y);
int dx = g_lastX - x;
int dy = g_lastY - y;
if(g_lastX == MIN_INT || g_lastY == MIN_INT)
return NS_OK;
nsIView *aView = nsnull;
mViewManager->GetRootView(aView);
if (!aView)
if (NS_FAILED(UpdateFromEvent(aDOMEvent)))
return NS_OK;
nsEventStatus statusX;
nsMouseScrollEvent scrollEventX(PR_TRUE, NS_MOUSE_SCROLL, mWidget);
scrollEventX.delta = dx;
scrollEventX.scrollFlags = nsMouseScrollEvent::kIsHorizontal | nsMouseScrollEvent::kHasPixels;
mViewManager->DispatchEvent(&scrollEventX, aView, &statusX);
if(statusX != nsEventStatus_eIgnore ){
if (dx > 5)
g_panning = PR_TRUE;
g_lastX = x;
}
nsEventStatus statusY;
nsMouseScrollEvent scrollEventY(PR_TRUE, NS_MOUSE_SCROLL, mWidget);
scrollEventY.delta = dy;
scrollEventY.scrollFlags = nsMouseScrollEvent::kIsVertical | nsMouseScrollEvent::kHasPixels;
mViewManager->DispatchEvent(&scrollEventY, aView, &statusY);
if(statusY != nsEventStatus_eIgnore ){
if (dy > 5)
g_panning = PR_TRUE;
g_lastY = y;
}
if (g_panning) {
aDOMEvent->StopPropagation();
aDOMEvent->PreventDefault();
}
return NS_OK;
}
// nsIContentPolicy Implementation
NS_IMETHODIMP
nsWidgetUtils::ShouldLoad(PRUint32 aContentType,
nsIURI *aContentLocation,
nsIURI *aRequestingLocation,
nsISupports *aRequestingContext,
const nsACString &aMimeGuess,
nsISupports *aExtra,
PRInt16 *aDecision)
{
*aDecision = nsIContentPolicy::ACCEPT;
nsresult rv;
if (aContentType != nsIContentPolicy::TYPE_DOCUMENT)
return NS_OK;
// we can't do anything without this
if (!aContentLocation)
return NS_OK;
nsCAutoString scheme;
rv = aContentLocation->GetScheme(scheme);
nsCAutoString lscheme;
ToLowerCase(scheme, lscheme);
if (!lscheme.EqualsLiteral("ftp") &&
!lscheme.EqualsLiteral("http") &&
!lscheme.EqualsLiteral("https"))
return NS_OK;
if (g_panning > 0)
*aDecision = nsIContentPolicy::REJECT_REQUEST;
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::MouseClick(nsIDOMEvent* aDOMEvent)
{
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::MouseDblClick(nsIDOMEvent* aDOMEvent)
{
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::HandleEvent(nsIDOMEvent* aDOMEvent)
{
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::MouseOver(nsIDOMEvent* aDOMEvent)
{
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::MouseOut(nsIDOMEvent* aDOMEvent)
{
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::DragMove(nsIDOMEvent* aDOMEvent)
{
return NS_OK;
}
NS_IMETHODIMP
nsWidgetUtils::ShouldProcess(PRUint32 aContentType,
nsIURI *aContentLocation,
nsIURI *aRequestingLocation,
nsISupports *aRequestingContext,
const nsACString &aMimeGuess,
nsISupports *aExtra,
PRInt16 *aDecision)
{
*aDecision = nsIContentPolicy::ACCEPT;
return NS_OK;
}
PRBool
nsWidgetUtils::IsXULNode(nsIDOMNode *aNode, PRUint32 *aType)
{
PRBool retval = PR_FALSE;
if (!aNode) return retval;
nsString sorigNode;
aNode->GetNodeName(sorigNode);
if (sorigNode.EqualsLiteral("#document"))
return retval;
retval = StringBeginsWith(sorigNode, NS_LITERAL_STRING("xul:"));
if (!aType) return retval;
if (sorigNode.EqualsLiteral("xul:thumb")
|| sorigNode.EqualsLiteral("xul:vbox")
|| sorigNode.EqualsLiteral("xul:spacer"))
*aType = PR_FALSE; // Magic
else if (sorigNode.EqualsLiteral("xul:slider"))
*aType = 2; // Magic
else if (sorigNode.EqualsLiteral("xul:scrollbarbutton"))
*aType = 3; // Magic
return retval;
}
nsresult
nsWidgetUtils::GetDOMWindowByNode(nsIDOMNode *aNode, nsIDOMWindow * *aDOMWindow)
{
nsresult rv;
nsCOMPtr<nsIDOMDocument> nodeDoc;
rv = aNode->GetOwnerDocument(getter_AddRefs(nodeDoc));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMDocumentView> docView = do_QueryInterface(nodeDoc, &rv);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMAbstractView> absView;
NS_ENSURE_SUCCESS(rv, rv);
rv = docView->GetDefaultView(getter_AddRefs(absView));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIDOMWindow> window = do_QueryInterface(absView, &rv);
NS_ENSURE_SUCCESS(rv, rv);
*aDOMWindow = window;
NS_IF_ADDREF(*aDOMWindow);
return rv;
}
void
nsWidgetUtils::GetChromeEventHandler(nsIDOMWindow *aDOMWin,
nsIDOMEventTarget **aChromeTarget)
{
nsCOMPtr<nsPIDOMWindow> privateDOMWindow(do_QueryInterface(aDOMWin));
nsPIDOMEventTarget* chromeEventHandler = nsnull;
if (privateDOMWindow) {
chromeEventHandler = privateDOMWindow->GetChromeEventHandler();
}
nsCOMPtr<nsIDOMEventTarget> target(do_QueryInterface(chromeEventHandler));
*aChromeTarget = target;
NS_IF_ADDREF(*aChromeTarget);
}
void
nsWidgetUtils::RemoveWindowListeners(nsIDOMWindow *aDOMWin)
{
nsresult rv;
nsCOMPtr<nsIDOMEventTarget> chromeEventHandler;
GetChromeEventHandler(aDOMWin, getter_AddRefs(chromeEventHandler));
if (!chromeEventHandler) {
return;
}
// Use capturing, otherwise the normal find next will get activated when ours should
nsCOMPtr<nsPIDOMEventTarget> piTarget(do_QueryInterface(chromeEventHandler));
// Remove DOM Text listener for IME text events
rv = piTarget->RemoveEventListenerByIID(static_cast<nsIDOMMouseListener*>(this),
NS_GET_IID(nsIDOMMouseListener));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to add Mouse Motion listener\n");
return;
}
rv = piTarget->RemoveEventListenerByIID(static_cast<nsIDOMMouseMotionListener*>(this),
NS_GET_IID(nsIDOMMouseMotionListener));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to add Mouse Motion listener\n");
return;
}
}
void
nsWidgetUtils::AttachWindowListeners(nsIDOMWindow *aDOMWin)
{
nsresult rv;
nsCOMPtr<nsIDOMEventTarget> chromeEventHandler;
GetChromeEventHandler(aDOMWin, getter_AddRefs(chromeEventHandler));
if (!chromeEventHandler) {
return;
}
// Use capturing, otherwise the normal find next will get activated when ours should
nsCOMPtr<nsPIDOMEventTarget> piTarget(do_QueryInterface(chromeEventHandler));
// Attach menu listeners, this will help us ignore keystrokes meant for menus
rv = piTarget->AddEventListenerByIID(static_cast<nsIDOMMouseListener*>(this),
NS_GET_IID(nsIDOMMouseListener));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to add Mouse Motion listener\n");
return;
}
rv = piTarget->AddEventListenerByIID(static_cast<nsIDOMMouseMotionListener*>(this),
NS_GET_IID(nsIDOMMouseMotionListener));
if (NS_FAILED(rv)) {
NS_WARNING("Failed to add Mouse Motion listener\n");
return;
}
}
nsWidgetUtils::~nsWidgetUtils()
{
}
NS_IMPL_ISUPPORTS5(nsWidgetUtils, nsIObserver, nsIDOMMouseMotionListener, nsIDOMMouseListener, nsIContentPolicy, nsISupportsWeakReference)
NS_IMETHODIMP
nsWidgetUtils::Observe(nsISupports *aSubject, const char *aTopic, const PRUnichar *aData)
{
nsresult rv;
if (!strcmp(aTopic,"domwindowopened"))
{
nsCOMPtr<nsIDOMWindow> chromeWindow = do_QueryInterface(aSubject);
if (chromeWindow)
AttachWindowListeners(chromeWindow);
return NS_OK;
}
if (!strcmp(aTopic,"domwindowclosed"))
{
nsCOMPtr<nsIDOMWindow> chromeWindow = do_QueryInterface(aSubject);
RemoveWindowListeners(chromeWindow);
return NS_OK;
}
return NS_OK;
}
//------------------------------------------------------------------------------
// XPCOM REGISTRATION BELOW
//------------------------------------------------------------------------------
#define WidgetUtils_CID \
{ 0x0ced17b6, 0x96ed, 0x4030, \
{0xa1, 0x34, 0x77, 0xcb, 0x66, 0x10, 0xa8, 0xf6} }
#define WidgetUtils_ContractID "@mozilla.org/extensions/widgetutils;1"
static NS_METHOD WidgetUtilsRegistration(nsIComponentManager *aCompMgr,
nsIFile *aPath,
const char *registryLocation,
const char *componentType,
const nsModuleComponentInfo *info)
{
nsresult rv;
nsCOMPtr<nsIServiceManager> servman = do_QueryInterface((nsISupports*)aCompMgr, &rv);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsICategoryManager> catman;
servman->GetServiceByContractID(NS_CATEGORYMANAGER_CONTRACTID,
NS_GET_IID(nsICategoryManager),
getter_AddRefs(catman));
if (NS_FAILED(rv))
return rv;
char* previous = nsnull;
rv = catman->AddCategoryEntry("app-startup",
"WidgetUtils",
WidgetUtils_ContractID,
PR_TRUE,
PR_TRUE,
&previous);
if (previous)
nsMemory::Free(previous);
rv = catman->AddCategoryEntry("content-policy",
"WidgetUtils",
WidgetUtils_ContractID,
PR_TRUE,
PR_TRUE,
&previous);
if (previous)
nsMemory::Free(previous);
return rv;
}
static NS_METHOD WidgetUtilsUnregistration(nsIComponentManager *aCompMgr,
nsIFile *aPath,
const char *registryLocation,
const nsModuleComponentInfo *info)
{
nsresult rv;
nsCOMPtr<nsIServiceManager> servman = do_QueryInterface((nsISupports*)aCompMgr, &rv);
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsICategoryManager> catman;
servman->GetServiceByContractID(NS_CATEGORYMANAGER_CONTRACTID,
NS_GET_IID(nsICategoryManager),
getter_AddRefs(catman));
if (NS_FAILED(rv))
return rv;
rv = catman->DeleteCategoryEntry("app-startup",
"WidgetUtils",
PR_TRUE);
rv = catman->DeleteCategoryEntry("content-policy",
"WidgetUtils",
PR_TRUE);
return rv;
}
NS_GENERIC_FACTORY_CONSTRUCTOR(nsWidgetUtils)
static const nsModuleComponentInfo components[] =
{
{ "nsWidgetUtilsService",
WidgetUtils_CID,
WidgetUtils_ContractID,
nsWidgetUtilsConstructor,
WidgetUtilsRegistration,
WidgetUtilsUnregistration
}
};
NS_IMPL_NSGETMODULE(nsWidgetUtilsModule, components)
