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gecko-dev/embedding/browser/nsDocShellTreeOwner.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Local Includes
#include "nsDocShellTreeOwner.h"
#include "nsWebBrowser.h"
// Helper Classes
#include "nsStyleCoord.h"
#include "nsSize.h"
#include "nsHTMLReflowState.h"
#include "nsIServiceManager.h"
#include "nsComponentManagerUtils.h"
#include "nsXPIDLString.h"
#include "nsIAtom.h"
#include "nsReadableUtils.h"
#include "nsUnicharUtils.h"
#include "nsISimpleEnumerator.h"
#include "mozilla/LookAndFeel.h"
// Interfaces needed to be included
#include "nsPresContext.h"
#include "nsIContextMenuListener.h"
#include "nsIContextMenuListener2.h"
#include "nsITooltipListener.h"
#include "nsIDOMNode.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMDocument.h"
#include "nsIDOMDocumentType.h"
#include "nsIDOMElement.h"
#include "Link.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/SVGTitleElement.h"
#include "nsIDOMEvent.h"
#include "nsIDOMMouseEvent.h"
#include "nsIFormControl.h"
#include "nsIDOMHTMLInputElement.h"
#include "nsIDOMHTMLTextAreaElement.h"
#include "nsIDOMHTMLHtmlElement.h"
#include "nsIDOMHTMLAppletElement.h"
#include "nsIDOMHTMLObjectElement.h"
#include "nsIDOMHTMLEmbedElement.h"
#include "nsIDOMHTMLDocument.h"
#include "nsIImageLoadingContent.h"
#include "nsIWebNavigation.h"
#include "nsIDOMHTMLElement.h"
#include "nsIPresShell.h"
#include "nsPIDOMWindow.h"
#include "nsPIWindowRoot.h"
#include "nsIDOMWindowCollection.h"
#include "nsIWindowWatcher.h"
#include "nsPIWindowWatcher.h"
#include "nsIPrompt.h"
#include "nsRect.h"
#include "nsIWebBrowserChromeFocus.h"
#include "nsIContent.h"
#include "imgIContainer.h"
#include "nsContextMenuInfo.h"
#include "nsPresContext.h"
#include "nsViewManager.h"
#include "nsView.h"
#include "nsIDOMDragEvent.h"
#include "nsIConstraintValidation.h"
#include "mozilla/Attributes.h"
#include "mozilla/EventListenerManager.h"
#include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()
using namespace mozilla;
using namespace mozilla::dom;
//
// GetEventReceiver
//
// A helper routine that navigates the tricky path from a |nsWebBrowser| to
// a |EventTarget| via the window root and chrome event handler.
//
static nsresult
GetDOMEventTarget(nsWebBrowser* inBrowser, EventTarget** aTarget)
{
NS_ENSURE_ARG_POINTER(inBrowser);
nsCOMPtr<nsIDOMWindow> domWindow;
inBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
nsCOMPtr<nsPIDOMWindow> domWindowPrivate = do_QueryInterface(domWindow);
NS_ENSURE_TRUE(domWindowPrivate, NS_ERROR_FAILURE);
nsPIDOMWindow *rootWindow = domWindowPrivate->GetPrivateRoot();
NS_ENSURE_TRUE(rootWindow, NS_ERROR_FAILURE);
nsCOMPtr<EventTarget> target =
rootWindow->GetChromeEventHandler();
NS_ENSURE_TRUE(target, NS_ERROR_FAILURE);
target.forget(aTarget);
return NS_OK;
}
//*****************************************************************************
//*** nsDocShellTreeOwner: Object Management
//*****************************************************************************
nsDocShellTreeOwner::nsDocShellTreeOwner() :
mWebBrowser(nullptr),
mTreeOwner(nullptr),
mPrimaryContentShell(nullptr),
mWebBrowserChrome(nullptr),
mOwnerWin(nullptr),
mOwnerRequestor(nullptr)
{
}
nsDocShellTreeOwner::~nsDocShellTreeOwner()
{
RemoveChromeListeners();
}
//*****************************************************************************
// nsDocShellTreeOwner::nsISupports
//*****************************************************************************
NS_IMPL_ADDREF(nsDocShellTreeOwner)
NS_IMPL_RELEASE(nsDocShellTreeOwner)
NS_INTERFACE_MAP_BEGIN(nsDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsIDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsIBaseWindow)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIWebProgressListener)
NS_INTERFACE_MAP_ENTRY(nsIDOMEventListener)
NS_INTERFACE_MAP_ENTRY(nsICDocShellTreeOwner)
NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
NS_INTERFACE_MAP_END
//*****************************************************************************
// nsDocShellTreeOwner::nsIInterfaceRequestor
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::GetInterface(const nsIID& aIID, void** aSink)
{
NS_ENSURE_ARG_POINTER(aSink);
if (NS_SUCCEEDED(QueryInterface(aIID, aSink)))
return NS_OK;
if (aIID.Equals(NS_GET_IID(nsIWebBrowserChromeFocus))) {
if (mWebBrowserChromeWeak != nullptr)
return mWebBrowserChromeWeak->QueryReferent(aIID, aSink);
return mOwnerWin->QueryInterface(aIID, aSink);
}
if (aIID.Equals(NS_GET_IID(nsIPrompt))) {
nsCOMPtr<nsIPrompt> prompt;
EnsurePrompter();
prompt = mPrompter;
if (prompt) {
prompt.forget(aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
if (aIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
nsCOMPtr<nsIAuthPrompt> prompt;
EnsureAuthPrompter();
prompt = mAuthPrompter;
if (prompt) {
prompt.forget(aSink);
return NS_OK;
}
return NS_NOINTERFACE;
}
nsCOMPtr<nsIInterfaceRequestor> req = GetOwnerRequestor();
if (req)
return req->GetInterface(aIID, aSink);
return NS_NOINTERFACE;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIDocShellTreeOwner
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::FindItemWithName(const char16_t* aName,
nsIDocShellTreeItem* aRequestor,
nsIDocShellTreeItem* aOriginalRequestor,
nsIDocShellTreeItem** aFoundItem)
{
NS_ENSURE_ARG(aName);
NS_ENSURE_ARG_POINTER(aFoundItem);
*aFoundItem = nullptr; // if we don't find one, we return NS_OK and a null result
nsresult rv;
nsAutoString name(aName);
if (!mWebBrowser)
return NS_OK; // stymied
/* special cases */
if (name.IsEmpty())
return NS_OK;
if (name.LowerCaseEqualsLiteral("_blank"))
return NS_OK;
// _main is an IE target which should be case-insensitive but isn't
// see bug 217886 for details
// XXXbz what if our browser isn't targetable? We need to handle that somehow.
if (name.LowerCaseEqualsLiteral("_content") || name.EqualsLiteral("_main")) {
nsCOMPtr<nsIDocShell> foundItem = mWebBrowser->mDocShell;
foundItem.forget(aFoundItem);
return NS_OK;
}
if (!SameCOMIdentity(aRequestor, mWebBrowser->mDocShell)) {
// This isn't a request coming up from our kid, so check with said kid
nsISupports* thisSupports = static_cast<nsIDocShellTreeOwner*>(this);
rv = mWebBrowser->mDocShell->FindItemWithName(aName, thisSupports,
aOriginalRequestor, aFoundItem);
if (NS_FAILED(rv) || *aFoundItem) {
return rv;
}
}
// next, if we have a parent and it isn't the requestor, ask it
if (mTreeOwner) {
nsCOMPtr<nsIDocShellTreeOwner> reqAsTreeOwner(do_QueryInterface(aRequestor));
if (mTreeOwner != reqAsTreeOwner)
return mTreeOwner->FindItemWithName(aName, mWebBrowser->mDocShell,
aOriginalRequestor, aFoundItem);
return NS_OK;
}
// finally, failing everything else, search all windows
return FindItemWithNameAcrossWindows(aName, aRequestor, aOriginalRequestor,
aFoundItem);
}
nsresult
nsDocShellTreeOwner::FindItemWithNameAcrossWindows(const char16_t* aName,
nsIDocShellTreeItem* aRequestor,
nsIDocShellTreeItem* aOriginalRequestor,
nsIDocShellTreeItem** aFoundItem)
{
// search for the item across the list of top-level windows
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (!wwatch)
return NS_OK;
return wwatch->FindItemWithName(aName, aRequestor, aOriginalRequestor,
aFoundItem);
}
void
nsDocShellTreeOwner::EnsurePrompter()
{
if (mPrompter)
return;
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch && mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow)
wwatch->GetNewPrompter(domWindow, getter_AddRefs(mPrompter));
}
}
void
nsDocShellTreeOwner::EnsureAuthPrompter()
{
if (mAuthPrompter)
return;
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch && mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow)
wwatch->GetNewAuthPrompter(domWindow, getter_AddRefs(mAuthPrompter));
}
}
void
nsDocShellTreeOwner::AddToWatcher()
{
if (mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (webBrowserChrome)
wwatch->AddWindow(domWindow, webBrowserChrome);
}
}
}
}
void
nsDocShellTreeOwner::RemoveFromWatcher()
{
if (mWebBrowser) {
nsCOMPtr<nsIDOMWindow> domWindow;
mWebBrowser->GetContentDOMWindow(getter_AddRefs(domWindow));
if (domWindow) {
nsCOMPtr<nsPIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
if (wwatch)
wwatch->RemoveWindow(domWindow);
}
}
}
NS_IMETHODIMP
nsDocShellTreeOwner::ContentShellAdded(nsIDocShellTreeItem* aContentShell,
bool aPrimary, bool aTargetable,
const nsAString& aID)
{
if (mTreeOwner)
return mTreeOwner->ContentShellAdded(aContentShell, aPrimary,
aTargetable, aID);
if (aPrimary)
mPrimaryContentShell = aContentShell;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::ContentShellRemoved(nsIDocShellTreeItem* aContentShell)
{
if (mTreeOwner)
return mTreeOwner->ContentShellRemoved(aContentShell);
if (mPrimaryContentShell == aContentShell)
mPrimaryContentShell = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPrimaryContentShell(nsIDocShellTreeItem** aShell)
{
NS_ENSURE_ARG_POINTER(aShell);
if (mTreeOwner)
return mTreeOwner->GetPrimaryContentShell(aShell);
nsCOMPtr<nsIDocShellTreeItem> shell;
shell = (mPrimaryContentShell ? mPrimaryContentShell : mWebBrowser->mDocShell);
shell.forget(aShell);
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SizeShellTo(nsIDocShellTreeItem* aShellItem,
int32_t aCX, int32_t aCY)
{
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
NS_ENSURE_STATE(mTreeOwner || webBrowserChrome);
if (mTreeOwner)
return mTreeOwner->SizeShellTo(aShellItem, aCX, aCY);
if (aShellItem == mWebBrowser->mDocShell)
return webBrowserChrome->SizeBrowserTo(aCX, aCY);
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(aShellItem));
NS_ENSURE_TRUE(webNav, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMDocument> domDocument;
webNav->GetDocument(getter_AddRefs(domDocument));
NS_ENSURE_TRUE(domDocument, NS_ERROR_FAILURE);
nsCOMPtr<nsIDOMElement> domElement;
domDocument->GetDocumentElement(getter_AddRefs(domElement));
NS_ENSURE_TRUE(domElement, NS_ERROR_FAILURE);
// Set the preferred Size
//XXX
NS_ERROR("Implement this");
/*
Set the preferred size on the aShellItem.
*/
nsRefPtr<nsPresContext> presContext;
mWebBrowser->mDocShell->GetPresContext(getter_AddRefs(presContext));
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
nsIPresShell *presShell = presContext->GetPresShell();
NS_ENSURE_TRUE(presShell, NS_ERROR_FAILURE);
NS_ENSURE_SUCCESS(presShell->ResizeReflow(NS_UNCONSTRAINEDSIZE,
NS_UNCONSTRAINEDSIZE), NS_ERROR_FAILURE);
nsRect shellArea = presContext->GetVisibleArea();
int32_t browserCX = presContext->AppUnitsToDevPixels(shellArea.width);
int32_t browserCY = presContext->AppUnitsToDevPixels(shellArea.height);
return webBrowserChrome->SizeBrowserTo(browserCX, browserCY);
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPersistence(bool aPersistPosition,
bool aPersistSize,
bool aPersistSizeMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPersistence(bool* aPersistPosition,
bool* aPersistSize,
bool* aPersistSizeMode)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetTargetableShellCount(uint32_t* aResult)
{
if (mTreeOwner) {
mTreeOwner->GetTargetableShellCount(aResult);
} else {
*aResult = 0;
}
return NS_OK;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIBaseWindow
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::InitWindow(nativeWindow aParentNativeWindow,
nsIWidget* aParentWidget, int32_t aX,
int32_t aY, int32_t aCX, int32_t aCY)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Create()
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Destroy()
{
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (webBrowserChrome)
{
return webBrowserChrome->DestroyBrowserWindow();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetUnscaledDevicePixelsPerCSSPixel(double *aScale)
{
if (mWebBrowser) {
return mWebBrowser->GetUnscaledDevicePixelsPerCSSPixel(aScale);
}
*aScale = 1.0;
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPosition(int32_t aX, int32_t aY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, 0, 0);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPosition(int32_t* aX, int32_t* aY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, nullptr, nullptr);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetSize(int32_t aCX, int32_t aCY, bool aRepaint)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
0, 0, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetSize(int32_t* aCX, int32_t* aCY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER,
nullptr, nullptr, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetPositionAndSize(int32_t aX, int32_t aY, int32_t aCX,
int32_t aCY, bool aRepaint)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetPositionAndSize(int32_t* aX, int32_t* aY, int32_t* aCX,
int32_t* aCY)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetDimensions(nsIEmbeddingSiteWindow::DIM_FLAGS_SIZE_OUTER |
nsIEmbeddingSiteWindow::DIM_FLAGS_POSITION,
aX, aY, aCX, aCY);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::Repaint(bool aForce)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetParentWidget(nsIWidget** aParentWidget)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetParentWidget(nsIWidget* aParentWidget)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetParentNativeWindow(nativeWindow* aParentNativeWindow)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetSiteWindow(aParentNativeWindow);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetParentNativeWindow(nativeWindow aParentNativeWindow)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetNativeHandle(nsAString& aNativeHandle)
{
// the nativeHandle should be accessed from nsIXULWindow
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetVisibility(bool* aVisibility)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetVisibility(bool aVisibility)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetVisibility(aVisibility);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetEnabled(bool *aEnabled)
{
NS_ENSURE_ARG_POINTER(aEnabled);
*aEnabled = true;
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetEnabled(bool aEnabled)
{
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetMainWidget(nsIWidget** aMainWidget)
{
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetFocus()
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetFocus();
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::GetTitle(char16_t** aTitle)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->GetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetTitle(const char16_t* aTitle)
{
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin = GetOwnerWin();
if (ownerWin)
{
return ownerWin->SetTitle(aTitle);
}
return NS_ERROR_NULL_POINTER;
}
//*****************************************************************************
// nsDocShellTreeOwner::nsIWebProgressListener
//*****************************************************************************
NS_IMETHODIMP
nsDocShellTreeOwner::OnProgressChange(nsIWebProgress* aProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress)
{
// In the absence of DOM document creation event, this method is the
// most convenient place to install the mouse listener on the
// DOM document.
return AddChromeListeners();
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStateChange(nsIWebProgress* aProgress,
nsIRequest* aRequest,
uint32_t aProgressStateFlags,
nsresult aStatus)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsIURI* aURI,
uint32_t aFlags)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
nsresult aStatus,
const char16_t* aMessage)
{
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::OnSecurityChange(nsIWebProgress *aWebProgress,
nsIRequest *aRequest,
uint32_t state)
{
return NS_OK;
}
//*****************************************************************************
// nsDocShellTreeOwner: Helpers
//*****************************************************************************
//*****************************************************************************
// nsDocShellTreeOwner: Accessors
//*****************************************************************************
void
nsDocShellTreeOwner::WebBrowser(nsWebBrowser* aWebBrowser)
{
if (!aWebBrowser)
RemoveChromeListeners();
if (aWebBrowser != mWebBrowser) {
mPrompter = nullptr;
mAuthPrompter = nullptr;
}
mWebBrowser = aWebBrowser;
}
nsWebBrowser *
nsDocShellTreeOwner::WebBrowser()
{
return mWebBrowser;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetTreeOwner(nsIDocShellTreeOwner* aTreeOwner)
{
if (aTreeOwner) {
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome(do_GetInterface(aTreeOwner));
NS_ENSURE_TRUE(webBrowserChrome, NS_ERROR_INVALID_ARG);
NS_ENSURE_SUCCESS(SetWebBrowserChrome(webBrowserChrome), NS_ERROR_INVALID_ARG);
mTreeOwner = aTreeOwner;
} else {
mTreeOwner = nullptr;
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (!webBrowserChrome)
NS_ENSURE_SUCCESS(SetWebBrowserChrome(nullptr), NS_ERROR_FAILURE);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::SetWebBrowserChrome(nsIWebBrowserChrome* aWebBrowserChrome)
{
if (!aWebBrowserChrome) {
mWebBrowserChrome = nullptr;
mOwnerWin = nullptr;
mOwnerRequestor = nullptr;
mWebBrowserChromeWeak = nullptr;
} else {
nsCOMPtr<nsISupportsWeakReference> supportsweak =
do_QueryInterface(aWebBrowserChrome);
if (supportsweak) {
supportsweak->GetWeakReference(getter_AddRefs(mWebBrowserChromeWeak));
} else {
nsCOMPtr<nsIEmbeddingSiteWindow> ownerWin(do_QueryInterface(aWebBrowserChrome));
nsCOMPtr<nsIInterfaceRequestor> requestor(do_QueryInterface(aWebBrowserChrome));
// it's ok for ownerWin or requestor to be null.
mWebBrowserChrome = aWebBrowserChrome;
mOwnerWin = ownerWin;
mOwnerRequestor = requestor;
}
}
return NS_OK;
}
//
// AddChromeListeners
//
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
//
NS_IMETHODIMP
nsDocShellTreeOwner::AddChromeListeners()
{
nsresult rv = NS_OK;
nsCOMPtr<nsIWebBrowserChrome> webBrowserChrome = GetWebBrowserChrome();
if (!webBrowserChrome)
return NS_ERROR_FAILURE;
// install tooltips
if (!mChromeTooltipListener) {
nsCOMPtr<nsITooltipListener>
tooltipListener(do_QueryInterface(webBrowserChrome));
if (tooltipListener) {
mChromeTooltipListener = new ChromeTooltipListener(mWebBrowser,
webBrowserChrome);
rv = mChromeTooltipListener->AddChromeListeners();
}
}
// install context menus
if (!mChromeContextMenuListener) {
nsCOMPtr<nsIContextMenuListener2>
contextListener2(do_QueryInterface(webBrowserChrome));
nsCOMPtr<nsIContextMenuListener>
contextListener(do_QueryInterface(webBrowserChrome));
if (contextListener2 || contextListener) {
mChromeContextMenuListener =
new ChromeContextMenuListener(mWebBrowser, webBrowserChrome);
rv = mChromeContextMenuListener->AddChromeListeners();
}
}
// register dragover and drop event listeners with the listener manager
nsCOMPtr<EventTarget> target;
GetDOMEventTarget(mWebBrowser, getter_AddRefs(target));
EventListenerManager* elmP = target->GetOrCreateListenerManager();
if (elmP) {
elmP->AddEventListenerByType(this, NS_LITERAL_STRING("dragover"),
TrustedEventsAtSystemGroupBubble());
elmP->AddEventListenerByType(this, NS_LITERAL_STRING("drop"),
TrustedEventsAtSystemGroupBubble());
}
return rv;
} // AddChromeListeners
NS_IMETHODIMP
nsDocShellTreeOwner::RemoveChromeListeners()
{
if (mChromeTooltipListener) {
mChromeTooltipListener->RemoveChromeListeners();
mChromeTooltipListener = nullptr;
}
if (mChromeContextMenuListener) {
mChromeContextMenuListener->RemoveChromeListeners();
mChromeContextMenuListener = nullptr;
}
nsCOMPtr<EventTarget> piTarget;
GetDOMEventTarget(mWebBrowser, getter_AddRefs(piTarget));
if (!piTarget)
return NS_OK;
EventListenerManager* elmP = piTarget->GetOrCreateListenerManager();
if (elmP)
{
elmP->RemoveEventListenerByType(this, NS_LITERAL_STRING("dragover"),
TrustedEventsAtSystemGroupBubble());
elmP->RemoveEventListenerByType(this, NS_LITERAL_STRING("drop"),
TrustedEventsAtSystemGroupBubble());
}
return NS_OK;
}
NS_IMETHODIMP
nsDocShellTreeOwner::HandleEvent(nsIDOMEvent* aEvent)
{
nsCOMPtr<nsIDOMDragEvent> dragEvent = do_QueryInterface(aEvent);
NS_ENSURE_TRUE(dragEvent, NS_ERROR_INVALID_ARG);
bool defaultPrevented;
aEvent->GetDefaultPrevented(&defaultPrevented);
if (defaultPrevented) {
return NS_OK;
}
nsCOMPtr<nsIDroppedLinkHandler> handler = do_GetService("@mozilla.org/content/dropped-link-handler;1");
if (handler) {
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("dragover")) {
bool canDropLink;
handler->CanDropLink(dragEvent, false, &canDropLink);
if (canDropLink)
aEvent->PreventDefault();
}
else if (eventType.EqualsLiteral("drop")) {
nsIWebNavigation* webnav = static_cast<nsIWebNavigation *>(mWebBrowser);
nsAutoString link, name;
if (webnav && NS_SUCCEEDED(handler->DropLink(dragEvent, name, true, link))) {
if (!link.IsEmpty()) {
webnav->LoadURI(link.get(), 0, nullptr, nullptr, nullptr);
}
} else {
aEvent->StopPropagation();
aEvent->PreventDefault();
}
}
}
return NS_OK;
}
already_AddRefed<nsIWebBrowserChrome>
nsDocShellTreeOwner::GetWebBrowserChrome()
{
nsCOMPtr<nsIWebBrowserChrome> chrome;
if (mWebBrowserChromeWeak) {
chrome = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mWebBrowserChrome) {
chrome = mWebBrowserChrome;
}
return chrome.forget();
}
already_AddRefed<nsIEmbeddingSiteWindow>
nsDocShellTreeOwner::GetOwnerWin()
{
nsCOMPtr<nsIEmbeddingSiteWindow> win;
if (mWebBrowserChromeWeak) {
win = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mOwnerWin) {
win = mOwnerWin;
}
return win.forget();
}
already_AddRefed<nsIInterfaceRequestor>
nsDocShellTreeOwner::GetOwnerRequestor()
{
nsCOMPtr<nsIInterfaceRequestor> req;
if (mWebBrowserChromeWeak) {
req = do_QueryReferent(mWebBrowserChromeWeak);
} else if (mOwnerRequestor) {
req = mOwnerRequestor;
}
return req.forget();
}
///////////////////////////////////////////////////////////////////////////////
// DefaultTooltipTextProvider
class DefaultTooltipTextProvider final : public nsITooltipTextProvider
{
public:
DefaultTooltipTextProvider();
NS_DECL_ISUPPORTS
NS_DECL_NSITOOLTIPTEXTPROVIDER
protected:
~DefaultTooltipTextProvider() {}
nsCOMPtr<nsIAtom> mTag_dialog;
nsCOMPtr<nsIAtom> mTag_dialogheader;
nsCOMPtr<nsIAtom> mTag_window;
};
NS_IMPL_ISUPPORTS(DefaultTooltipTextProvider, nsITooltipTextProvider)
DefaultTooltipTextProvider::DefaultTooltipTextProvider()
{
// There are certain element types which we don't want to use
// as tool tip text.
mTag_dialog = do_GetAtom("dialog");
mTag_dialogheader = do_GetAtom("dialogheader");
mTag_window = do_GetAtom("window");
}
//
// UseSVGTitle
//
// A helper routine that determines whether we're still interested
// in SVG titles. We need to stop at the SVG root element that
// has a document node parent
//
static bool
UseSVGTitle(nsIDOMElement *currElement)
{
nsCOMPtr<dom::Element> element(do_QueryInterface(currElement));
if (!element || !element->IsSVGElement() || !element->GetParentNode())
return false;
return element->GetParentNode()->NodeType() != nsIDOMNode::DOCUMENT_NODE;
}
/* void getNodeText(in nsIDOMNode aNode, out wstring aText); */
NS_IMETHODIMP
DefaultTooltipTextProvider::GetNodeText(nsIDOMNode *aNode, char16_t **aText,
bool *_retval)
{
NS_ENSURE_ARG_POINTER(aNode);
NS_ENSURE_ARG_POINTER(aText);
nsString outText;
nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
bool lookingForSVGTitle = true;
bool found = false;
nsCOMPtr<nsIDOMNode> current(aNode);
// If the element implement the constraint validation API and has no title,
// show the validation message, if any.
nsCOMPtr<nsIConstraintValidation> cvElement = do_QueryInterface(current);
if (cvElement) {
nsCOMPtr<nsIContent> content = do_QueryInterface(cvElement);
nsCOMPtr<nsIAtom> titleAtom = do_GetAtom("title");
nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(content);
bool formHasNoValidate = false;
mozilla::dom::Element* form = formControl->GetFormElement();
if (form) {
nsCOMPtr<nsIAtom> noValidateAtom = do_GetAtom("novalidate");
formHasNoValidate = form->HasAttr(kNameSpaceID_None, noValidateAtom);
}
if (!content->HasAttr(kNameSpaceID_None, titleAtom) &&
!formHasNoValidate) {
cvElement->GetValidationMessage(outText);
found = !outText.IsEmpty();
}
}
while (!found && current) {
nsCOMPtr<nsIDOMElement> currElement(do_QueryInterface(current));
if (currElement) {
nsCOMPtr<nsIContent> content(do_QueryInterface(currElement));
if (content) {
if (!content->IsAnyOfXULElements(mTag_dialog,
mTag_dialogheader,
mTag_window)) {
// first try the normal title attribute...
currElement->GetAttribute(NS_LITERAL_STRING("title"), outText);
if (outText.Length()) {
found = true;
} else {
// ...ok, that didn't work, try it in the XLink namespace
NS_NAMED_LITERAL_STRING(xlinkNS, "http://www.w3.org/1999/xlink");
nsCOMPtr<mozilla::dom::Link> linkContent(do_QueryInterface(currElement));
if (linkContent) {
nsCOMPtr<nsIURI> uri(linkContent->GetURIExternal());
if (uri) {
currElement->GetAttributeNS(NS_LITERAL_STRING("http://www.w3.org/1999/xlink"), NS_LITERAL_STRING("title"), outText);
if (outText.Length())
found = true;
}
} else {
if (lookingForSVGTitle) {
lookingForSVGTitle = UseSVGTitle(currElement);
}
if (lookingForSVGTitle) {
nsINodeList* childNodes = node->ChildNodes();
uint32_t childNodeCount = childNodes->Length();
for (uint32_t i = 0; i < childNodeCount; i++) {
nsIContent* child = childNodes->Item(i);
if (child->IsSVGElement(nsGkAtoms::title)) {
static_cast<dom::SVGTitleElement*>(child)->GetTextContent(outText);
if (outText.Length())
found = true;
break;
}
}
}
}
}
}
}
}
// not found here, walk up to the parent and keep trying
if (!found) {
nsCOMPtr<nsIDOMNode> temp(current);
temp->GetParentNode(getter_AddRefs(current));
}
} // while not found
*_retval = found;
*aText = (found) ? ToNewUnicode(outText) : nullptr;
return NS_OK;
}
///////////////////////////////////////////////////////////////////////////////
NS_IMPL_ISUPPORTS(ChromeTooltipListener, nsIDOMEventListener)
//
// ChromeTooltipListener ctor
//
ChromeTooltipListener::ChromeTooltipListener(nsWebBrowser* inBrowser,
nsIWebBrowserChrome* inChrome)
: mWebBrowser(inBrowser), mWebBrowserChrome(inChrome),
mTooltipListenerInstalled(false),
mMouseClientX(0), mMouseClientY(0),
mShowingTooltip(false), mTooltipShownOnce(false)
{
mTooltipTextProvider = do_GetService(NS_TOOLTIPTEXTPROVIDER_CONTRACTID);
if (!mTooltipTextProvider) {
mTooltipTextProvider = new DefaultTooltipTextProvider();
}
} // ctor
//
// ChromeTooltipListener dtor
//
ChromeTooltipListener::~ChromeTooltipListener()
{
} // dtor
//
// AddChromeListeners
//
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
//
NS_IMETHODIMP
ChromeTooltipListener::AddChromeListeners()
{
if (!mEventTarget)
GetDOMEventTarget(mWebBrowser, getter_AddRefs(mEventTarget));
// Register the appropriate events for tooltips, but only if
// the embedding chrome cares.
nsresult rv = NS_OK;
nsCOMPtr<nsITooltipListener> tooltipListener(do_QueryInterface(mWebBrowserChrome));
if (tooltipListener && !mTooltipListenerInstalled) {
rv = AddTooltipListener();
if (NS_FAILED(rv))
return rv;
}
return rv;
} // AddChromeListeners
//
// AddTooltipListener
//
// Subscribe to the events that will allow us to track tooltips. We need "mouse" for mouseExit,
// "mouse motion" for mouseMove, and "key" for keyDown. As we add the listeners, keep track
// of how many succeed so we can clean up correctly in Release().
//
NS_IMETHODIMP
ChromeTooltipListener::AddTooltipListener()
{
if (mEventTarget) {
nsresult rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("keydown"),
this, false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("mousedown"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("mouseout"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->AddSystemEventListener(NS_LITERAL_STRING("mousemove"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
mTooltipListenerInstalled = true;
}
return NS_OK;
}
//
// RemoveChromeListeners
//
// Unsubscribe from the various things we've hooked up to the window root.
//
NS_IMETHODIMP
ChromeTooltipListener::RemoveChromeListeners()
{
HideTooltip();
if (mTooltipListenerInstalled)
RemoveTooltipListener();
mEventTarget = nullptr;
// it really doesn't matter if these fail...
return NS_OK;
} // RemoveChromeTooltipListeners
//
// RemoveTooltipListener
//
// Unsubscribe from all the various tooltip events that we were listening to
//
NS_IMETHODIMP
ChromeTooltipListener::RemoveTooltipListener()
{
if (mEventTarget) {
nsresult rv =
mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("keydown"), this,
false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("mousedown"),
this, false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("mouseout"), this,
false);
NS_ENSURE_SUCCESS(rv, rv);
rv = mEventTarget->RemoveSystemEventListener(NS_LITERAL_STRING("mousemove"),
this, false);
NS_ENSURE_SUCCESS(rv, rv);
mTooltipListenerInstalled = false;
}
return NS_OK;
}
NS_IMETHODIMP
ChromeTooltipListener::HandleEvent(nsIDOMEvent* aEvent)
{
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("keydown") ||
eventType.EqualsLiteral("mousedown")) {
return HideTooltip();
} else if (eventType.EqualsLiteral("mouseout")) {
// Reset flag so that tooltip will display on the next MouseMove
mTooltipShownOnce = false;
return HideTooltip();
} else if (eventType.EqualsLiteral("mousemove")) {
return MouseMove(aEvent);
}
NS_ERROR("Unexpected event type");
return NS_OK;
}
//
// MouseMove
//
// If we're a tooltip, fire off a timer to see if a tooltip should be shown. If the
// timer fires, we cache the node in |mPossibleTooltipNode|.
//
nsresult
ChromeTooltipListener::MouseMove(nsIDOMEvent* aMouseEvent)
{
nsCOMPtr<nsIDOMMouseEvent> mouseEvent(do_QueryInterface(aMouseEvent));
if (!mouseEvent)
return NS_OK;
// stash the coordinates of the event so that we can still get back to it from within the
// timer callback. On win32, we'll get a MouseMove event even when a popup goes away --
// even when the mouse doesn't change position! To get around this, we make sure the
// mouse has really moved before proceeding.
int32_t newMouseX, newMouseY;
mouseEvent->GetClientX(&newMouseX);
mouseEvent->GetClientY(&newMouseY);
if (mMouseClientX == newMouseX && mMouseClientY == newMouseY)
return NS_OK;
// Filter out minor mouse movements.
if (mShowingTooltip &&
(abs(mMouseClientX - newMouseX) <= kTooltipMouseMoveTolerance) &&
(abs(mMouseClientY - newMouseY) <= kTooltipMouseMoveTolerance))
return NS_OK;
mMouseClientX = newMouseX; mMouseClientY = newMouseY;
mouseEvent->GetScreenX(&mMouseScreenX);
mouseEvent->GetScreenY(&mMouseScreenY);
if (mTooltipTimer) {
mTooltipTimer->Cancel();
}
if (!mShowingTooltip && !mTooltipShownOnce) {
mTooltipTimer = do_CreateInstance("@mozilla.org/timer;1");
if (mTooltipTimer) {
nsCOMPtr<EventTarget> eventTarget = aMouseEvent->InternalDOMEvent()->GetTarget();
if (eventTarget)
mPossibleTooltipNode = do_QueryInterface(eventTarget);
if (mPossibleTooltipNode) {
nsresult rv =
mTooltipTimer->InitWithFuncCallback(sTooltipCallback, this,
LookAndFeel::GetInt(LookAndFeel::eIntID_TooltipDelay, 500),
nsITimer::TYPE_ONE_SHOT);
if (NS_FAILED(rv))
mPossibleTooltipNode = nullptr;
}
}
else {
NS_WARNING("Could not create a timer for tooltip tracking");
}
} else {
mTooltipShownOnce = true;
return HideTooltip();
}
return NS_OK;
} // MouseMove
//
// ShowTooltip
//
// Tell the registered chrome that they should show the tooltip
//
NS_IMETHODIMP
ChromeTooltipListener::ShowTooltip(int32_t inXCoords, int32_t inYCoords,
const nsAString & inTipText)
{
nsresult rv = NS_OK;
// do the work to call the client
nsCOMPtr<nsITooltipListener> tooltipListener(do_QueryInterface(mWebBrowserChrome));
if (tooltipListener) {
rv = tooltipListener->OnShowTooltip(inXCoords, inYCoords, PromiseFlatString(inTipText).get());
if (NS_SUCCEEDED(rv))
mShowingTooltip = true;
}
return rv;
} // ShowTooltip
//
// HideTooltip
//
// Tell the registered chrome that they should rollup the tooltip
// NOTE: This routine is safe to call even if the popup is already closed.
//
NS_IMETHODIMP
ChromeTooltipListener::HideTooltip()
{
nsresult rv = NS_OK;
// shut down the relevant timers
if (mTooltipTimer) {
mTooltipTimer->Cancel();
mTooltipTimer = nullptr;
// release tooltip target
mPossibleTooltipNode = nullptr;
}
// if we're showing the tip, tell the chrome to hide it
if (mShowingTooltip) {
nsCOMPtr<nsITooltipListener> tooltipListener(do_QueryInterface(mWebBrowserChrome));
if (tooltipListener) {
rv = tooltipListener->OnHideTooltip();
if (NS_SUCCEEDED(rv))
mShowingTooltip = false;
}
}
return rv;
} // HideTooltip
//
// sTooltipCallback
//
// A timer callback, fired when the mouse has hovered inside of a frame for the
// appropriate amount of time. Getting to this point means that we should show the
// tooltip, but only after we determine there is an appropriate TITLE element.
//
// This relies on certain things being cached into the |aChromeTooltipListener| object passed to
// us by the timer:
// -- the x/y coordinates of the mouse (mMouseClientY, mMouseClientX)
// -- the dom node the user hovered over (mPossibleTooltipNode)
//
void
ChromeTooltipListener::sTooltipCallback(nsITimer *aTimer,
void *aChromeTooltipListener)
{
ChromeTooltipListener* self = static_cast<ChromeTooltipListener*>
(aChromeTooltipListener);
if (self && self->mPossibleTooltipNode) {
// The actual coordinates we want to put the tooltip at are relative to the
// toplevel docshell of our mWebBrowser. We know what the screen
// coordinates of the mouse event were, which means we just need the screen
// coordinates of the docshell. Unfortunately, there is no good way to
// find those short of groveling for the presentation in that docshell and
// finding the screen coords of its toplevel widget...
nsCOMPtr<nsIDocShell> docShell =
do_GetInterface(static_cast<nsIWebBrowser*>(self->mWebBrowser));
nsCOMPtr<nsIPresShell> shell;
if (docShell) {
shell = docShell->GetPresShell();
}
nsIWidget* widget = nullptr;
if (shell) {
nsViewManager* vm = shell->GetViewManager();
if (vm) {
nsView* view = vm->GetRootView();
if (view) {
nsPoint offset;
widget = view->GetNearestWidget(&offset);
}
}
}
if (!widget) {
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nullptr;
return;
}
// if there is text associated with the node, show the tip and fire
// off a timer to auto-hide it.
nsXPIDLString tooltipText;
if (self->mTooltipTextProvider) {
bool textFound = false;
self->mTooltipTextProvider->GetNodeText(
self->mPossibleTooltipNode, getter_Copies(tooltipText), &textFound);
if (textFound) {
nsString tipText(tooltipText);
LayoutDeviceIntPoint screenDot = widget->WidgetToScreenOffset();
double scaleFactor = 1.0;
if (shell->GetPresContext()) {
scaleFactor = double(nsPresContext::AppUnitsPerCSSPixel())/
shell->GetPresContext()->DeviceContext()->AppUnitsPerDevPixelAtUnitFullZoom();
}
// ShowTooltip expects widget-relative position.
self->ShowTooltip(self->mMouseScreenX - screenDot.x / scaleFactor,
self->mMouseScreenY - screenDot.y / scaleFactor,
tipText);
}
}
// release tooltip target if there is one, NO MATTER WHAT
self->mPossibleTooltipNode = nullptr;
} // if "self" data valid
} // sTooltipCallback
NS_IMPL_ISUPPORTS(ChromeContextMenuListener, nsIDOMEventListener)
//
// ChromeTooltipListener ctor
//
ChromeContextMenuListener::ChromeContextMenuListener(nsWebBrowser* inBrowser, nsIWebBrowserChrome* inChrome)
: mContextMenuListenerInstalled(false),
mWebBrowser(inBrowser),
mWebBrowserChrome(inChrome)
{
} // ctor
//
// ChromeTooltipListener dtor
//
ChromeContextMenuListener::~ChromeContextMenuListener()
{
} // dtor
//
// AddContextMenuListener
//
// Subscribe to the events that will allow us to track context menus. Bascially, this
// is just the context-menu DOM event.
//
NS_IMETHODIMP
ChromeContextMenuListener::AddContextMenuListener()
{
if (mEventTarget) {
nsresult rv =
mEventTarget->AddEventListener(NS_LITERAL_STRING("contextmenu"), this,
false, false);
NS_ENSURE_SUCCESS(rv, rv);
mContextMenuListenerInstalled = true;
}
return NS_OK;
}
//
// RemoveContextMenuListener
//
// Unsubscribe from all the various context menu events that we were listening to.
//
NS_IMETHODIMP
ChromeContextMenuListener::RemoveContextMenuListener()
{
if (mEventTarget) {
nsresult rv =
mEventTarget->RemoveEventListener(NS_LITERAL_STRING("contextmenu"), this,
false);
NS_ENSURE_SUCCESS(rv, rv);
mContextMenuListenerInstalled = false;
}
return NS_OK;
}
//
// AddChromeListeners
//
// Hook up things to the chrome like context menus and tooltips, if the chrome
// has implemented the right interfaces.
//
NS_IMETHODIMP
ChromeContextMenuListener::AddChromeListeners()
{
if (!mEventTarget)
GetDOMEventTarget(mWebBrowser, getter_AddRefs(mEventTarget));
// Register the appropriate events for context menus, but only if
// the embedding chrome cares.
nsresult rv = NS_OK;
nsCOMPtr<nsIContextMenuListener2> contextListener2(do_QueryInterface(mWebBrowserChrome));
nsCOMPtr<nsIContextMenuListener> contextListener(do_QueryInterface(mWebBrowserChrome));
if ((contextListener || contextListener2) && !mContextMenuListenerInstalled)
rv = AddContextMenuListener();
return rv;
} // AddChromeListeners
//
// RemoveChromeListeners
//
// Unsubscribe from the various things we've hooked up to the window root.
//
NS_IMETHODIMP
ChromeContextMenuListener::RemoveChromeListeners()
{
if (mContextMenuListenerInstalled)
RemoveContextMenuListener();
mEventTarget = nullptr;
// it really doesn't matter if these fail...
return NS_OK;
} // RemoveChromeTooltipListeners
//
// ContextMenu
//
// We're on call to show the context menu. Dig around in the DOM to
// find the type of object we're dealing with and notify the front
// end chrome.
//
NS_IMETHODIMP
ChromeContextMenuListener::HandleEvent(nsIDOMEvent* aMouseEvent)
{
nsCOMPtr<nsIDOMMouseEvent> mouseEvent = do_QueryInterface(aMouseEvent);
NS_ENSURE_TRUE(mouseEvent, NS_ERROR_UNEXPECTED);
bool isDefaultPrevented = false;
aMouseEvent->GetDefaultPrevented(&isDefaultPrevented);
if (isDefaultPrevented) {
return NS_OK;
}
nsCOMPtr<EventTarget> targetNode = aMouseEvent->InternalDOMEvent()->GetTarget();
if (!targetNode)
return NS_ERROR_NULL_POINTER;
nsCOMPtr<nsIDOMNode> targetDOMnode;
nsCOMPtr<nsIDOMNode> node = do_QueryInterface(targetNode);
if (!node)
return NS_OK;
// Stop the context menu event going to other windows (bug 78396)
aMouseEvent->PreventDefault();
// If the listener is a nsIContextMenuListener2, create the info object
nsCOMPtr<nsIContextMenuListener2> menuListener2(do_QueryInterface(mWebBrowserChrome));
nsContextMenuInfo *menuInfoImpl = nullptr;
nsCOMPtr<nsIContextMenuInfo> menuInfo;
if (menuListener2) {
menuInfoImpl = new nsContextMenuInfo;
menuInfo = menuInfoImpl;
}
uint32_t flags = nsIContextMenuListener::CONTEXT_NONE;
uint32_t flags2 = nsIContextMenuListener2::CONTEXT_NONE;
// XXX test for selected text
uint16_t nodeType;
nsresult res = node->GetNodeType(&nodeType);
NS_ENSURE_SUCCESS(res, res);
// First, checks for nodes that never have children.
if (nodeType == nsIDOMNode::ELEMENT_NODE) {
nsCOMPtr<nsIImageLoadingContent> content(do_QueryInterface(node));
if (content) {
nsCOMPtr<nsIURI> imgUri;
content->GetCurrentURI(getter_AddRefs(imgUri));
if (imgUri) {
flags |= nsIContextMenuListener::CONTEXT_IMAGE;
flags2 |= nsIContextMenuListener2::CONTEXT_IMAGE;
targetDOMnode = node;
}
}
nsCOMPtr<nsIFormControl> formControl(do_QueryInterface(node));
if (formControl) {
if (formControl->GetType() == NS_FORM_TEXTAREA) {
flags |= nsIContextMenuListener::CONTEXT_TEXT;
flags2 |= nsIContextMenuListener2::CONTEXT_TEXT;
targetDOMnode = node;
} else {
nsCOMPtr<nsIDOMHTMLInputElement> inputElement(do_QueryInterface(formControl));
if (inputElement) {
flags |= nsIContextMenuListener::CONTEXT_INPUT;
flags2 |= nsIContextMenuListener2::CONTEXT_INPUT;
if (menuListener2) {
if (formControl->IsSingleLineTextControl(false)) {
flags2 |= nsIContextMenuListener2::CONTEXT_TEXT;
}
}
targetDOMnode = node;
}
}
}
// always consume events for plugins and Java who may throw their
// own context menus but not for image objects. Document objects
// will never be targets or ancestors of targets, so that's OK.
nsCOMPtr<nsIDOMHTMLObjectElement> objectElement;
if (!(flags & nsIContextMenuListener::CONTEXT_IMAGE))
objectElement = do_QueryInterface(node);
nsCOMPtr<nsIDOMHTMLEmbedElement> embedElement(do_QueryInterface(node));
nsCOMPtr<nsIDOMHTMLAppletElement> appletElement(do_QueryInterface(node));
if (objectElement || embedElement || appletElement)
return NS_OK;
}
// Bubble out, looking for items of interest
do {
uint16_t nodeType;
res = node->GetNodeType(&nodeType);
NS_ENSURE_SUCCESS(res, res);
if (nodeType == nsIDOMNode::ELEMENT_NODE) {
// Test if the element has an associated link
nsCOMPtr<nsIDOMElement> element(do_QueryInterface(node));
bool hasAttr = false;
res = element->HasAttribute(NS_LITERAL_STRING("href"), &hasAttr);
if (NS_SUCCEEDED(res) && hasAttr)
{
flags |= nsIContextMenuListener::CONTEXT_LINK;
flags2 |= nsIContextMenuListener2::CONTEXT_LINK;
if (!targetDOMnode)
targetDOMnode = node;
if (menuInfoImpl)
menuInfoImpl->SetAssociatedLink(node);
break; // exit do-while
}
}
// walk-up-the-tree
nsCOMPtr<nsIDOMNode> parentNode;
node->GetParentNode(getter_AddRefs(parentNode));
node = parentNode;
} while (node);
if (!flags && !flags2) {
// We found nothing of interest so far, check if we
// have at least an html document.
nsCOMPtr<nsIDOMDocument> document;
node = do_QueryInterface(targetNode);
node->GetOwnerDocument(getter_AddRefs(document));
nsCOMPtr<nsIDOMHTMLDocument> htmlDocument(do_QueryInterface(document));
if (htmlDocument) {
flags |= nsIContextMenuListener::CONTEXT_DOCUMENT;
flags2 |= nsIContextMenuListener2::CONTEXT_DOCUMENT;
targetDOMnode = node;
if (!(flags & nsIContextMenuListener::CONTEXT_IMAGE)) {
// check if this is a background image that the user was trying to click on
// and if the listener is ready for that (only nsIContextMenuListener2 and up)
if (menuInfoImpl && menuInfoImpl->HasBackgroundImage(targetDOMnode)) {
flags2 |= nsIContextMenuListener2::CONTEXT_BACKGROUND_IMAGE;
// For the embedder to get the correct background image
// targetDOMnode must point to the original node.
targetDOMnode = do_QueryInterface(targetNode);
}
}
}
}
// we need to cache the event target into the focus controller's popupNode
// so we can get at it later from command code, etc.:
// get the dom window
nsCOMPtr<nsIDOMWindow> win;
res = mWebBrowser->GetContentDOMWindow(getter_AddRefs(win));
NS_ENSURE_SUCCESS(res, res);
NS_ENSURE_TRUE(win, NS_ERROR_FAILURE);
nsCOMPtr<nsPIDOMWindow> window(do_QueryInterface(win));
NS_ENSURE_TRUE(window, NS_ERROR_FAILURE);
nsCOMPtr<nsPIWindowRoot> root = window->GetTopWindowRoot();
NS_ENSURE_TRUE(root, NS_ERROR_FAILURE);
if (root) {
// set the window root's popup node to the event target
root->SetPopupNode(targetDOMnode);
}
// Tell the listener all about the event
if (menuListener2) {
menuInfoImpl->SetMouseEvent(aMouseEvent);
menuInfoImpl->SetDOMNode(targetDOMnode);
menuListener2->OnShowContextMenu(flags2, menuInfo);
} else {
nsCOMPtr<nsIContextMenuListener> menuListener(do_QueryInterface(mWebBrowserChrome));
if (menuListener)
menuListener->OnShowContextMenu(flags, aMouseEvent, targetDOMnode);
}
return NS_OK;
} // MouseDown
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