nsWindowRoot.cpp
/* -*- Mode: C++; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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* 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
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*
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* for the specific language governing rights and limitations under the
* License.
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* The Original Code is the Mozilla browser.
*
* The Initial Developer of the Original Code is
* Netscape Communications, Inc.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
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* Contributor(s):
* David W. Hyatt <hyatt@netscape.com> (Original Author)
*
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* either of 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"),
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#include "nsCOMPtr.h"
#include "nsWindowRoot.h"
#include "nsPIDOMWindow.h"
#include "nsIDOMWindow.h"
#include "nsIDOMDocument.h"
#include "nsIDocument.h"
#include "nsIEventListenerManager.h"
#include "nsPresContext.h"
#include "nsLayoutCID.h"
#include "nsContentCID.h"
#include "nsIPrivateDOMEvent.h"
#include "nsIDOMWindowInternal.h"
#include "nsString.h"
#include "nsEventDispatcher.h"
#include "nsIProgrammingLanguage.h"
#include "nsGUIEvent.h"
#include "nsGlobalWindow.h"
#include "nsFocusManager.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIDOMNSHTMLTextAreaElement.h"
#include "nsIControllers.h"
#include "nsCycleCollectionParticipant.h"
#ifdef MOZ_XUL
#include "nsIDOMXULElement.h"
#endif
static NS_DEFINE_CID(kEventListenerManagerCID, NS_EVENTLISTENERMANAGER_CID);
nsWindowRoot::nsWindowRoot(nsPIDOMWindow* aWindow)
{
mWindow = aWindow;
}
nsWindowRoot::~nsWindowRoot()
{
if (mListenerManager) {
mListenerManager->Disconnect();
}
}
NS_IMPL_CYCLE_COLLECTION_3(nsWindowRoot, mListenerManager, mPopupNode,
mParent)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsWindowRoot)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMEventTarget)
NS_INTERFACE_MAP_ENTRY(nsPIDOMEventTarget)
NS_INTERFACE_MAP_ENTRY(nsPIWindowRoot)
NS_INTERFACE_MAP_ENTRY(nsIDOMEventTarget)
NS_INTERFACE_MAP_ENTRY(nsIDOM3EventTarget)
NS_INTERFACE_MAP_ENTRY(nsIDOMNSEventTarget)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsWindowRoot)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsWindowRoot)
NS_IMETHODIMP
nsWindowRoot::AddEventListener(const nsAString& aType, nsIDOMEventListener* aListener, PRBool aUseCapture)
{
return AddEventListener(aType, aListener, aUseCapture, PR_FALSE, 1);
}
NS_IMETHODIMP
nsWindowRoot::RemoveEventListener(const nsAString& aType, nsIDOMEventListener* aListener, PRBool aUseCapture)
{
return RemoveGroupedEventListener(aType, aListener, aUseCapture, nsnull);
}
NS_IMETHODIMP
nsWindowRoot::DispatchEvent(nsIDOMEvent* aEvt, PRBool *_retval)
{
nsEventStatus status = nsEventStatus_eIgnore;
nsresult rv = nsEventDispatcher::DispatchDOMEvent(
static_cast<nsPIDOMEventTarget*>(this), nsnull, aEvt, nsnull, &status);
*_retval = (status != nsEventStatus_eConsumeNoDefault);
return rv;
}
nsresult
nsWindowRoot::DispatchDOMEvent(nsEvent* aEvent,
nsIDOMEvent* aDOMEvent,
nsPresContext* aPresContext,
nsEventStatus* aEventStatus)
{
return nsEventDispatcher::DispatchDOMEvent(static_cast<nsPIDOMEventTarget*>(this),
aEvent, aDOMEvent,
aPresContext, aEventStatus);
}
NS_IMETHODIMP
nsWindowRoot::AddGroupedEventListener(const nsAString & aType, nsIDOMEventListener *aListener,
PRBool aUseCapture, nsIDOMEventGroup *aEvtGrp)
{
nsCOMPtr<nsIEventListenerManager> manager = GetListenerManager(PR_TRUE);
NS_ENSURE_STATE(manager);
PRInt32 flags = aUseCapture ? NS_EVENT_FLAG_CAPTURE : NS_EVENT_FLAG_BUBBLE;
return manager->AddEventListenerByType(aListener, aType, flags, aEvtGrp);
}
NS_IMETHODIMP
nsWindowRoot::RemoveGroupedEventListener(const nsAString & aType, nsIDOMEventListener *aListener,
PRBool aUseCapture, nsIDOMEventGroup *aEvtGrp)
{
if (mListenerManager) {
PRInt32 flags = aUseCapture ? NS_EVENT_FLAG_CAPTURE : NS_EVENT_FLAG_BUBBLE;
return mListenerManager->RemoveEventListenerByType(aListener, aType, flags,
aEvtGrp);
}
return NS_OK;
}
NS_IMETHODIMP
nsWindowRoot::CanTrigger(const nsAString & type, PRBool *_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsWindowRoot::IsRegisteredHere(const nsAString & type, PRBool *_retval)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsWindowRoot::AddEventListener(const nsAString& aType,
nsIDOMEventListener *aListener,
PRBool aUseCapture, PRBool aWantsUntrusted,
PRUint8 optional_argc)
{
NS_ASSERTION(!aWantsUntrusted || optional_argc > 1,
"Won't check if this is chrome, you want to set "
"aWantsUntrusted to PR_FALSE or make the aWantsUntrusted "
"explicit by making optional_argc non-zero.");
nsIEventListenerManager* manager = GetListenerManager(PR_TRUE);
NS_ENSURE_STATE(manager);
PRInt32 flags = aUseCapture ? NS_EVENT_FLAG_CAPTURE : NS_EVENT_FLAG_BUBBLE;
if (aWantsUntrusted) {
flags |= NS_PRIV_EVENT_UNTRUSTED_PERMITTED;
}
return manager->AddEventListenerByType(aListener, aType, flags, nsnull);
}
nsresult
nsWindowRoot::AddEventListenerByIID(nsIDOMEventListener *aListener, const nsIID& aIID)
{
nsIEventListenerManager* manager = GetListenerManager(PR_TRUE);
NS_ENSURE_STATE(manager);
return manager->AddEventListenerByIID(aListener, aIID, NS_EVENT_FLAG_BUBBLE);
}
nsresult
nsWindowRoot::RemoveEventListenerByIID(nsIDOMEventListener *aListener, const nsIID& aIID)
{
nsIEventListenerManager* manager = GetListenerManager(PR_TRUE);
if (manager) {
return manager->RemoveEventListenerByIID(aListener, aIID,
NS_EVENT_FLAG_BUBBLE);
}
return NS_OK;
}
nsIEventListenerManager*
nsWindowRoot::GetListenerManager(PRBool aCreateIfNotFound)
{
if (!mListenerManager) {
if (!aCreateIfNotFound) {
return nsnull;
}
mListenerManager = do_CreateInstance(kEventListenerManagerCID);
if (mListenerManager) {
mListenerManager->SetListenerTarget(
static_cast<nsPIDOMEventTarget*>(this));
}
}
return mListenerManager;
}
nsresult
nsWindowRoot::GetSystemEventGroup(nsIDOMEventGroup **aGroup)
{
nsIEventListenerManager* manager = GetListenerManager(PR_TRUE);
NS_ENSURE_STATE(manager);
return manager->GetSystemEventGroupLM(aGroup);
}
nsresult
nsWindowRoot::PreHandleEvent(nsEventChainPreVisitor& aVisitor)
{
aVisitor.mCanHandle = PR_TRUE;
aVisitor.mForceContentDispatch = PR_TRUE; //FIXME! Bug 329119
// To keep mWindow alive
aVisitor.mItemData = static_cast<nsISupports *>(mWindow);
aVisitor.mParentTarget = mParent;
return NS_OK;
}
nsresult
nsWindowRoot::PostHandleEvent(nsEventChainPostVisitor& aVisitor)
{
return NS_OK;
}
nsPIDOMWindow*
nsWindowRoot::GetWindow()
{
return mWindow;
}
NS_IMETHODIMP
nsWindowRoot::GetScriptTypeID(PRUint32 *aScriptType)
{
NS_ERROR("No default script type here - ask some element");
return nsIProgrammingLanguage::UNKNOWN;
}
NS_IMETHODIMP
nsWindowRoot::SetScriptTypeID(PRUint32 aScriptType)
{
NS_ERROR("Can't change default script type for a document");
return NS_ERROR_NOT_IMPLEMENTED;
}
nsresult
nsWindowRoot::GetControllers(nsIControllers** aResult)
{
*aResult = nsnull;
// XXX: we should fix this so there's a generic interface that
// describes controllers, so this code would have no special
// knowledge of what object might have controllers.
nsCOMPtr<nsPIDOMWindow> focusedWindow;
nsIContent* focusedContent =
nsFocusManager::GetFocusedDescendant(mWindow, PR_TRUE, getter_AddRefs(focusedWindow));
if (focusedContent) {
#ifdef MOZ_XUL
nsCOMPtr<nsIDOMXULElement> xulElement(do_QueryInterface(focusedContent));
if (xulElement)
return xulElement->GetControllers(aResult);
#endif
nsCOMPtr<nsIDOMNSHTMLTextAreaElement> htmlTextArea =
do_QueryInterface(focusedContent);
if (htmlTextArea)
return htmlTextArea->GetControllers(aResult);
nsCOMPtr<nsIDOMHTMLInputElement> htmlInputElement =
do_QueryInterface(focusedContent);
if (htmlInputElement)
return htmlInputElement->GetControllers(aResult);
if (focusedContent->IsEditable() && focusedWindow)
return focusedWindow->GetControllers(aResult);
}
else {
nsCOMPtr<nsIDOMWindowInternal> domWindow = do_QueryInterface(focusedWindow);
if (domWindow)
return domWindow->GetControllers(aResult);
}
return NS_OK;
}
nsresult
nsWindowRoot::GetControllerForCommand(const char * aCommand,
nsIController** _retval)
{
NS_ENSURE_ARG_POINTER(_retval);
*_retval = nsnull;
nsCOMPtr<nsIControllers> controllers;
nsCOMPtr<nsIController> controller;
GetControllers(getter_AddRefs(controllers));
if (controllers) {
controllers->GetControllerForCommand(aCommand, getter_AddRefs(controller));
if (controller) {
controller.swap(*_retval);
return NS_OK;
}
}
nsCOMPtr<nsPIDOMWindow> focusedWindow;
nsFocusManager::GetFocusedDescendant(mWindow, PR_TRUE, getter_AddRefs(focusedWindow));
while (focusedWindow) {
nsCOMPtr<nsIDOMWindowInternal> domWindow(do_QueryInterface(focusedWindow));
nsCOMPtr<nsIControllers> controllers2;
domWindow->GetControllers(getter_AddRefs(controllers2));
if (controllers2) {
controllers2->GetControllerForCommand(aCommand,
getter_AddRefs(controller));
if (controller) {
controller.swap(*_retval);
return NS_OK;
}
}
// XXXndeakin P3 is this casting safe?
nsCOMPtr<nsPIDOMWindow> piWindow = do_QueryInterface(focusedWindow);
nsGlobalWindow *win =
static_cast<nsGlobalWindow *>
(static_cast<nsIDOMWindowInternal *>(piWindow));
focusedWindow = win->GetPrivateParent();
}
return NS_OK;
}
nsIDOMNode*
nsWindowRoot::GetPopupNode()
{
return mPopupNode;
}
void
nsWindowRoot::SetPopupNode(nsIDOMNode* aNode)
{
mPopupNode = aNode;
}
///////////////////////////////////////////////////////////////////////////////////
nsresult
NS_NewWindowRoot(nsPIDOMWindow* aWindow, nsPIDOMEventTarget** aResult)
{
*aResult = new nsWindowRoot(aWindow);
if (!*aResult)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(*aResult);
return NS_OK;
}
