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gecko-dev/editor/composer/nsEditingSession.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sw=2 et tw=78: */
/* 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/. */
#include <string.h> // for nullptr, strcmp
#include "imgIContainer.h" // for imgIContainer, etc
#include "mozilla/ComposerCommandsUpdater.h" // for ComposerCommandsUpdater
#include "mozilla/FlushType.h" // for FlushType::Frames
#include "mozilla/HTMLEditor.h" // for HTMLEditor
#include "mozilla/mozalloc.h" // for operator new
#include "mozilla/PresShell.h" // for PresShell
#include "mozilla/Try.h" // for MOZ_TRY
#include "nsAString.h"
#include "nsBaseCommandController.h" // for nsBaseCommandController
#include "nsCommandManager.h" // for nsCommandManager
#include "nsComponentManagerUtils.h" // for do_CreateInstance
#include "nsContentUtils.h"
#include "nsDebug.h" // for NS_ENSURE_SUCCESS, etc
#include "nsDocShell.h" // for nsDocShell
#include "nsEditingSession.h"
#include "nsError.h" // for NS_ERROR_FAILURE, NS_OK, etc
#include "nsIChannel.h" // for nsIChannel
#include "nsIDocumentViewer.h" // for nsIDocumentViewer
#include "nsIControllers.h" // for nsIControllers
#include "nsID.h" // for NS_GET_IID, etc
#include "nsHTMLDocument.h" // for nsHTMLDocument
#include "nsIDocShell.h" // for nsIDocShell
#include "mozilla/dom/Document.h" // for Document
#include "nsIEditor.h" // for nsIEditor
#include "nsIInterfaceRequestorUtils.h" // for do_GetInterface
#include "nsIRefreshURI.h" // for nsIRefreshURI
#include "nsIRequest.h" // for nsIRequest
#include "nsITimer.h" // for nsITimer, etc
#include "nsIWeakReference.h" // for nsISupportsWeakReference, etc
#include "nsIWebNavigation.h" // for nsIWebNavigation
#include "nsIWebProgress.h" // for nsIWebProgress, etc
#include "nsLiteralString.h" // for NS_LITERAL_STRING
#include "nsPIDOMWindow.h" // for nsPIDOMWindow
#include "nsPresContext.h" // for nsPresContext
#include "nsReadableUtils.h" // for AppendUTF16toUTF8
#include "nsStringFwd.h" // for nsString
#include "mozilla/dom/BrowsingContext.h" // for BrowsingContext
#include "mozilla/dom/Selection.h" // for AutoHideSelectionChanges, etc
#include "mozilla/dom/WindowContext.h" // for WindowContext
#include "nsFrameSelection.h" // for nsFrameSelection
#include "nsBaseCommandController.h" // for nsBaseCommandController
#include "mozilla/dom/LoadURIOptionsBinding.h"
class nsISupports;
class nsIURI;
using namespace mozilla;
using namespace mozilla::dom;
/*---------------------------------------------------------------------------
nsEditingSession
----------------------------------------------------------------------------*/
nsEditingSession::nsEditingSession()
: mDoneSetup(false),
mCanCreateEditor(false),
mInteractive(false),
mMakeWholeDocumentEditable(true),
mDisabledJS(false),
mScriptsEnabled(true),
mProgressListenerRegistered(false),
mImageAnimationMode(0),
mEditorFlags(0),
mEditorStatus(eEditorOK),
mBaseCommandControllerId(0),
mDocStateControllerId(0),
mHTMLCommandControllerId(0) {}
/*---------------------------------------------------------------------------
~nsEditingSession
----------------------------------------------------------------------------*/
nsEditingSession::~nsEditingSession() {
// Must cancel previous timer?
if (mLoadBlankDocTimer) mLoadBlankDocTimer->Cancel();
}
NS_IMPL_ISUPPORTS(nsEditingSession, nsIEditingSession, nsIWebProgressListener,
nsISupportsWeakReference)
/*---------------------------------------------------------------------------
MakeWindowEditable
aEditorType string, "html" "htmlsimple" "text" "textsimple"
void makeWindowEditable(in nsIDOMWindow aWindow, in string aEditorType,
in boolean aDoAfterUriLoad,
in boolean aMakeWholeDocumentEditable,
in boolean aInteractive);
----------------------------------------------------------------------------*/
#define DEFAULT_EDITOR_TYPE "html"
NS_IMETHODIMP
nsEditingSession::MakeWindowEditable(mozIDOMWindowProxy* aWindow,
const char* aEditorType,
bool aDoAfterUriLoad,
bool aMakeWholeDocumentEditable,
bool aInteractive) {
mEditorType.Truncate();
mEditorFlags = 0;
NS_ENSURE_TRUE(aWindow, NS_ERROR_FAILURE);
auto* window = nsPIDOMWindowOuter::From(aWindow);
// disable plugins
nsCOMPtr<nsIDocShell> docShell = window->GetDocShell();
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
mDocShell = do_GetWeakReference(docShell);
mInteractive = aInteractive;
mMakeWholeDocumentEditable = aMakeWholeDocumentEditable;
nsresult rv;
if (!mInteractive) {
rv = DisableJS(window->GetCurrentInnerWindow());
NS_ENSURE_SUCCESS(rv, rv);
}
// Always remove existing editor
TearDownEditorOnWindow(aWindow);
// Tells embedder that startup is in progress
mEditorStatus = eEditorCreationInProgress;
// temporary to set editor type here. we will need different classes soon.
if (!aEditorType) aEditorType = DEFAULT_EDITOR_TYPE;
mEditorType = aEditorType;
// if all this does is setup listeners and I don't need listeners,
// can't this step be ignored?? (based on aDoAfterURILoad)
rv = PrepareForEditing(window);
NS_ENSURE_SUCCESS(rv, rv);
// set the flag on the docShell to say that it's editable
rv = docShell->MakeEditable(aDoAfterUriLoad);
NS_ENSURE_SUCCESS(rv, rv);
// Setup commands common to plaintext and html editors,
// including the document creation observers
// the first is an editing controller
rv = SetupEditorCommandController(
nsBaseCommandController::CreateEditingController, aWindow,
static_cast<nsIEditingSession*>(this), &mBaseCommandControllerId);
NS_ENSURE_SUCCESS(rv, rv);
// The second is a controller to monitor doc state,
// such as creation and "dirty flag"
rv = SetupEditorCommandController(
nsBaseCommandController::CreateHTMLEditorDocStateController, aWindow,
static_cast<nsIEditingSession*>(this), &mDocStateControllerId);
NS_ENSURE_SUCCESS(rv, rv);
// aDoAfterUriLoad can be false only when making an existing window editable
if (!aDoAfterUriLoad) {
rv = SetupEditorOnWindow(MOZ_KnownLive(*window));
// mEditorStatus is set to the error reason
// Since this is used only when editing an existing page,
// it IS ok to destroy current editor
if (NS_FAILED(rv)) {
TearDownEditorOnWindow(aWindow);
}
}
return rv;
}
nsresult nsEditingSession::DisableJS(nsPIDOMWindowInner* aWindow) {
WindowContext* wc = aWindow->GetWindowContext();
mScriptsEnabled = wc->GetAllowJavascript();
MOZ_TRY(wc->SetAllowJavascript(false));
mDisabledJS = true;
return NS_OK;
}
nsresult nsEditingSession::RestoreJS(nsPIDOMWindowInner* aWindow) {
if (!mDisabledJS) {
return NS_OK;
}
mDisabledJS = false;
if (NS_WARN_IF(!aWindow)) {
// DetachFromWindow may call this method with nullptr.
return NS_ERROR_FAILURE;
}
WindowContext* wc = aWindow->GetWindowContext();
return wc->SetAllowJavascript(mScriptsEnabled);
}
/*---------------------------------------------------------------------------
WindowIsEditable
boolean windowIsEditable (in nsIDOMWindow aWindow);
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::WindowIsEditable(mozIDOMWindowProxy* aWindow,
bool* outIsEditable) {
NS_ENSURE_STATE(aWindow);
nsCOMPtr<nsIDocShell> docShell =
nsPIDOMWindowOuter::From(aWindow)->GetDocShell();
NS_ENSURE_STATE(docShell);
return docShell->GetEditable(outIsEditable);
}
bool IsSupportedTextType(const nsAString& aMIMEType) {
// These are MIME types that are automatically parsed as "text/plain"
// and thus we can edit them as plaintext
// Note: in older versions, we attempted to convert the mimetype of
// the network channel for these and "text/xml" to "text/plain",
// but further investigation reveals that strategy doesn't work
static constexpr nsLiteralString sSupportedTextTypes[] = {
u"text/plain"_ns,
u"text/css"_ns,
u"text/rdf"_ns,
u"text/xsl"_ns,
u"text/javascript"_ns, // obsolete type
u"text/ecmascript"_ns, // obsolete type
u"application/javascript"_ns,
u"application/ecmascript"_ns,
u"application/x-javascript"_ns, // obsolete type
u"text/xul"_ns // obsolete type
};
for (const nsLiteralString& supportedTextType : sSupportedTextTypes) {
if (aMIMEType.Equals(supportedTextType)) {
return true;
}
}
return false;
}
nsresult nsEditingSession::SetupEditorOnWindow(nsPIDOMWindowOuter& aWindow) {
mDoneSetup = true;
// MIME CHECKING
// must get the content type
// Note: the doc gets this from the network channel during StartPageLoad,
// so we don't have to get it from there ourselves
nsAutoString mimeType;
// then lets check the mime type
if (RefPtr<Document> doc = aWindow.GetDoc()) {
doc->GetContentType(mimeType);
if (IsSupportedTextType(mimeType)) {
mEditorType.AssignLiteral("text");
mimeType.AssignLiteral("text/plain");
} else if (!doc->IsHTMLOrXHTML()) {
// Neither an acceptable text or html type.
mEditorStatus = eEditorErrorCantEditMimeType;
// Turn editor into HTML -- we will load blank page later
mEditorType.AssignLiteral("html");
mimeType.AssignLiteral("text/html");
}
// Flush out frame construction to make sure that the subframe's
// presshell is set up if it needs to be.
doc->FlushPendingNotifications(mozilla::FlushType::Frames);
if (mMakeWholeDocumentEditable) {
doc->SetEditableFlag(true);
// Enable usage of the execCommand API
doc->SetEditingState(Document::EditingState::eDesignMode);
}
}
bool needHTMLController = false;
if (mEditorType.EqualsLiteral("textmail")) {
mEditorFlags = nsIEditor::eEditorPlaintextMask |
nsIEditor::eEditorEnableWrapHackMask |
nsIEditor::eEditorMailMask;
} else if (mEditorType.EqualsLiteral("text")) {
mEditorFlags =
nsIEditor::eEditorPlaintextMask | nsIEditor::eEditorEnableWrapHackMask;
} else if (mEditorType.EqualsLiteral("htmlmail")) {
if (mimeType.EqualsLiteral("text/html")) {
needHTMLController = true;
mEditorFlags = nsIEditor::eEditorMailMask;
} else {
// Set the flags back to textplain.
mEditorFlags = nsIEditor::eEditorPlaintextMask |
nsIEditor::eEditorEnableWrapHackMask;
}
} else {
// Defaulted to html
needHTMLController = true;
}
if (mInteractive) {
mEditorFlags |= nsIEditor::eEditorAllowInteraction;
}
// make the UI state maintainer
RefPtr<ComposerCommandsUpdater> commandsUpdater =
new ComposerCommandsUpdater();
mComposerCommandsUpdater = commandsUpdater;
// now init the state maintainer
// This allows notification of error state
// even if we don't create an editor
commandsUpdater->Init(aWindow);
if (mEditorStatus != eEditorCreationInProgress) {
commandsUpdater->OnHTMLEditorCreated();
// At this point we have made a final decision that we don't support
// editing the current document. This is an internal failure state, but
// we return NS_OK to avoid throwing an exception from the designMode
// setter for web compatibility. The document editing APIs will tell the
// developer if editing has been disabled because we're in a document type
// that doesn't support editing.
return NS_OK;
}
// Create editor and do other things
// only if we haven't found some error above,
const RefPtr<nsDocShell> docShell = nsDocShell::Cast(aWindow.GetDocShell());
if (NS_WARN_IF(!docShell)) {
return NS_ERROR_FAILURE;
}
const RefPtr<PresShell> presShell = docShell->GetPresShell();
if (NS_WARN_IF(!presShell)) {
return NS_ERROR_FAILURE;
}
if (!mInteractive) {
// Disable animation of images in this document:
nsPresContext* presContext = presShell->GetPresContext();
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
mImageAnimationMode = presContext->ImageAnimationMode();
presContext->SetImageAnimationMode(imgIContainer::kDontAnimMode);
}
// Hide selection changes during initialization, in order to hide this
// from web pages.
RefPtr<nsFrameSelection> fs = presShell->FrameSelection();
NS_ENSURE_TRUE(fs, NS_ERROR_FAILURE);
AutoHideSelectionChanges hideSelectionChanges(fs);
nsCOMPtr<nsIDocumentViewer> viewer;
nsresult rv = docShell->GetDocViewer(getter_AddRefs(viewer));
if (NS_FAILED(rv) || NS_WARN_IF(!viewer)) {
NS_WARNING("nsDocShell::GetDocViewer() failed");
return rv;
}
const RefPtr<Document> doc = viewer->GetDocument();
if (NS_WARN_IF(!doc)) {
return NS_ERROR_FAILURE;
}
// create and set editor
// Try to reuse an existing editor
nsCOMPtr<nsIEditor> editor = do_QueryReferent(mExistingEditor);
RefPtr<HTMLEditor> htmlEditor = HTMLEditor::GetFrom(editor);
MOZ_ASSERT_IF(editor, htmlEditor);
if (htmlEditor) {
htmlEditor->PreDestroy();
} else {
htmlEditor = new HTMLEditor(*doc);
mExistingEditor =
do_GetWeakReference(static_cast<nsIEditor*>(htmlEditor.get()));
}
// set the editor on the docShell. The docShell now owns it.
rv = docShell->SetHTMLEditor(htmlEditor);
NS_ENSURE_SUCCESS(rv, rv);
// setup the HTML editor command controller
if (needHTMLController) {
// The third controller takes an nsIEditor as the context
rv = SetupEditorCommandController(
nsBaseCommandController::CreateHTMLEditorController, &aWindow,
static_cast<nsIEditor*>(htmlEditor), &mHTMLCommandControllerId);
NS_ENSURE_SUCCESS(rv, rv);
}
// Set mimetype on editor
rv = htmlEditor->SetContentsMIMEType(mimeType);
NS_ENSURE_SUCCESS(rv, rv);
MOZ_ASSERT(docShell->HasDocumentViewer());
MOZ_ASSERT(viewer->GetDocument());
MOZ_DIAGNOSTIC_ASSERT(commandsUpdater == mComposerCommandsUpdater);
if (MOZ_UNLIKELY(commandsUpdater != mComposerCommandsUpdater)) {
commandsUpdater = mComposerCommandsUpdater;
}
rv = htmlEditor->Init(*doc, *commandsUpdater, mEditorFlags);
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<Selection> selection = htmlEditor->GetSelection();
if (NS_WARN_IF(!selection)) {
return NS_ERROR_FAILURE;
}
// Set context on all controllers to be the editor
rv = SetEditorOnControllers(aWindow, htmlEditor);
NS_ENSURE_SUCCESS(rv, rv);
// Everything went fine!
mEditorStatus = eEditorOK;
// This will trigger documentCreation notification
return htmlEditor->PostCreate();
}
// Removes all listeners and controllers from aWindow and aEditor.
void nsEditingSession::RemoveListenersAndControllers(
nsPIDOMWindowOuter* aWindow, HTMLEditor* aHTMLEditor) {
if (!mComposerCommandsUpdater || !aHTMLEditor) {
return;
}
// Remove all the listeners
RefPtr<ComposerCommandsUpdater> composertCommandsUpdater =
std::move(mComposerCommandsUpdater);
MOZ_ASSERT(!mComposerCommandsUpdater);
aHTMLEditor->Detach(*composertCommandsUpdater);
// Remove editor controllers from the window now that we're not
// editing in that window any more.
RemoveEditorControllers(aWindow);
}
/*---------------------------------------------------------------------------
TearDownEditorOnWindow
void tearDownEditorOnWindow (in nsIDOMWindow aWindow);
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::TearDownEditorOnWindow(mozIDOMWindowProxy* aWindow) {
if (!mDoneSetup) {
return NS_OK;
}
NS_ENSURE_TRUE(aWindow, NS_ERROR_NULL_POINTER);
// Kill any existing reload timer
if (mLoadBlankDocTimer) {
mLoadBlankDocTimer->Cancel();
mLoadBlankDocTimer = nullptr;
}
mDoneSetup = false;
// Check if we're turning off editing (from contentEditable or designMode).
auto* window = nsPIDOMWindowOuter::From(aWindow);
RefPtr<Document> doc = window->GetDoc();
bool stopEditing = doc && doc->IsEditingOn();
if (stopEditing) {
RemoveWebProgressListener(window);
}
nsCOMPtr<nsIDocShell> docShell = window->GetDocShell();
NS_ENSURE_STATE(docShell);
RefPtr<HTMLEditor> htmlEditor = docShell->GetHTMLEditor();
if (stopEditing) {
doc->TearingDownEditor();
}
if (mComposerCommandsUpdater && htmlEditor) {
// Null out the editor on the controllers first to prevent their weak
// references from pointing to a destroyed editor.
SetEditorOnControllers(*window, nullptr);
}
// Null out the editor on the docShell to trigger PreDestroy which
// needs to happen before document state listeners are removed below.
docShell->SetEditor(nullptr);
RemoveListenersAndControllers(window, htmlEditor);
if (stopEditing) {
// Make things the way they were before we started editing.
RestoreJS(window->GetCurrentInnerWindow());
RestoreAnimationMode(window);
if (mMakeWholeDocumentEditable) {
doc->SetEditableFlag(false);
doc->SetEditingState(Document::EditingState::eOff);
}
}
return NS_OK;
}
/*---------------------------------------------------------------------------
GetEditorForFrame
nsIEditor getEditorForFrame (in nsIDOMWindow aWindow);
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::GetEditorForWindow(mozIDOMWindowProxy* aWindow,
nsIEditor** outEditor) {
if (NS_WARN_IF(!aWindow)) {
return NS_ERROR_INVALID_ARG;
}
nsCOMPtr<nsIEditor> editor = GetHTMLEditorForWindow(aWindow);
editor.forget(outEditor);
return NS_OK;
}
/*---------------------------------------------------------------------------
OnStateChange
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::OnStateChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, uint32_t aStateFlags,
nsresult aStatus) {
#ifdef NOISY_DOC_LOADING
nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest));
if (channel) {
nsAutoCString contentType;
channel->GetContentType(contentType);
if (!contentType.IsEmpty()) {
printf(" ++++++ MIMETYPE = %s\n", contentType.get());
}
}
#endif
//
// A Request has started...
//
if (aStateFlags & nsIWebProgressListener::STATE_START) {
#ifdef NOISY_DOC_LOADING
{
nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest));
if (channel) {
nsCOMPtr<nsIURI> uri;
channel->GetURI(getter_AddRefs(uri));
if (uri) {
nsCString spec;
uri->GetSpec(spec);
printf(" **** STATE_START: CHANNEL URI=%s, flags=%x\n", spec.get(),
aStateFlags);
}
} else {
printf(" STATE_START: NO CHANNEL flags=%x\n", aStateFlags);
}
}
#endif
// Page level notification...
if (aStateFlags & nsIWebProgressListener::STATE_IS_NETWORK) {
nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest));
StartPageLoad(channel);
#ifdef NOISY_DOC_LOADING
printf("STATE_START & STATE_IS_NETWORK flags=%x\n", aStateFlags);
#endif
}
// Document level notification...
if (aStateFlags & nsIWebProgressListener::STATE_IS_DOCUMENT &&
!(aStateFlags & nsIWebProgressListener::STATE_RESTORING)) {
#ifdef NOISY_DOC_LOADING
printf("STATE_START & STATE_IS_DOCUMENT flags=%x\n", aStateFlags);
#endif
bool progressIsForTargetDocument =
IsProgressForTargetDocument(aWebProgress);
if (progressIsForTargetDocument) {
nsCOMPtr<mozIDOMWindowProxy> window;
aWebProgress->GetDOMWindow(getter_AddRefs(window));
auto* piWindow = nsPIDOMWindowOuter::From(window);
RefPtr<Document> doc = piWindow->GetDoc();
nsHTMLDocument* htmlDoc =
doc && doc->IsHTMLOrXHTML() ? doc->AsHTMLDocument() : nullptr;
if (htmlDoc && doc->IsWriting()) {
nsAutoString designMode;
htmlDoc->GetDesignMode(designMode);
if (designMode.EqualsLiteral("on")) {
// This notification is for data coming in through
// document.open/write/close(), ignore it.
return NS_OK;
}
}
mCanCreateEditor = true;
StartDocumentLoad(aWebProgress, progressIsForTargetDocument);
}
}
}
//
// A Request is being processed
//
else if (aStateFlags & nsIWebProgressListener::STATE_TRANSFERRING) {
if (aStateFlags & nsIWebProgressListener::STATE_IS_DOCUMENT) {
// document transfer started
}
}
//
// Got a redirection
//
else if (aStateFlags & nsIWebProgressListener::STATE_REDIRECTING) {
if (aStateFlags & nsIWebProgressListener::STATE_IS_DOCUMENT) {
// got a redirect
}
}
//
// A network or document Request has finished...
//
else if (aStateFlags & nsIWebProgressListener::STATE_STOP) {
#ifdef NOISY_DOC_LOADING
{
nsCOMPtr<nsIChannel> channel(do_QueryInterface(aRequest));
if (channel) {
nsCOMPtr<nsIURI> uri;
channel->GetURI(getter_AddRefs(uri));
if (uri) {
nsCString spec;
uri->GetSpec(spec);
printf(" **** STATE_STOP: CHANNEL URI=%s, flags=%x\n", spec.get(),
aStateFlags);
}
} else {
printf(" STATE_STOP: NO CHANNEL flags=%x\n", aStateFlags);
}
}
#endif
// Document level notification...
if (aStateFlags & nsIWebProgressListener::STATE_IS_DOCUMENT) {
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
EndDocumentLoad(aWebProgress, channel, aStatus,
IsProgressForTargetDocument(aWebProgress));
#ifdef NOISY_DOC_LOADING
printf("STATE_STOP & STATE_IS_DOCUMENT flags=%x\n", aStateFlags);
#endif
}
// Page level notification...
if (aStateFlags & nsIWebProgressListener::STATE_IS_NETWORK) {
nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
(void)EndPageLoad(aWebProgress, channel, aStatus);
#ifdef NOISY_DOC_LOADING
printf("STATE_STOP & STATE_IS_NETWORK flags=%x\n", aStateFlags);
#endif
}
}
return NS_OK;
}
/*---------------------------------------------------------------------------
OnProgressChange
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::OnProgressChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
int32_t aCurSelfProgress,
int32_t aMaxSelfProgress,
int32_t aCurTotalProgress,
int32_t aMaxTotalProgress) {
MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
return NS_OK;
}
/*---------------------------------------------------------------------------
OnLocationChange
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::OnLocationChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, nsIURI* aURI,
uint32_t aFlags) {
nsCOMPtr<mozIDOMWindowProxy> domWindow;
nsresult rv = aWebProgress->GetDOMWindow(getter_AddRefs(domWindow));
NS_ENSURE_SUCCESS(rv, rv);
auto* piWindow = nsPIDOMWindowOuter::From(domWindow);
RefPtr<Document> doc = piWindow->GetDoc();
NS_ENSURE_TRUE(doc, NS_ERROR_FAILURE);
doc->SetDocumentURI(aURI);
// Notify the location-changed observer that
// the document URL has changed
nsIDocShell* docShell = piWindow->GetDocShell();
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
RefPtr<nsCommandManager> commandManager = docShell->GetCommandManager();
commandManager->CommandStatusChanged("obs_documentLocationChanged");
return NS_OK;
}
/*---------------------------------------------------------------------------
OnStatusChange
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::OnStatusChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, nsresult aStatus,
const char16_t* aMessage) {
MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
return NS_OK;
}
/*---------------------------------------------------------------------------
OnSecurityChange
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::OnSecurityChange(nsIWebProgress* aWebProgress,
nsIRequest* aRequest, uint32_t aState) {
MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
return NS_OK;
}
/*---------------------------------------------------------------------------
OnContentBlockingEvent
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::OnContentBlockingEvent(nsIWebProgress* aWebProgress,
nsIRequest* aRequest,
uint32_t aEvent) {
MOZ_ASSERT_UNREACHABLE("notification excluded in AddProgressListener(...)");
return NS_OK;
}
/*---------------------------------------------------------------------------
IsProgressForTargetDocument
Check that this notification is for our document.
----------------------------------------------------------------------------*/
bool nsEditingSession::IsProgressForTargetDocument(
nsIWebProgress* aWebProgress) {
nsCOMPtr<nsIWebProgress> editedWebProgress = do_QueryReferent(mDocShell);
return editedWebProgress == aWebProgress;
}
/*---------------------------------------------------------------------------
GetEditorStatus
Called during GetCommandStateParams("obs_documentCreated"...)
to determine if editor was created and document
was loaded successfully
----------------------------------------------------------------------------*/
NS_IMETHODIMP
nsEditingSession::GetEditorStatus(uint32_t* aStatus) {
NS_ENSURE_ARG_POINTER(aStatus);
*aStatus = mEditorStatus;
return NS_OK;
}
/*---------------------------------------------------------------------------
StartDocumentLoad
Called on start of load in a single frame
----------------------------------------------------------------------------*/
nsresult nsEditingSession::StartDocumentLoad(nsIWebProgress* aWebProgress,
bool aIsToBeMadeEditable) {
#ifdef NOISY_DOC_LOADING
printf("======= StartDocumentLoad ========\n");
#endif
NS_ENSURE_ARG_POINTER(aWebProgress);
if (aIsToBeMadeEditable) {
mEditorStatus = eEditorCreationInProgress;
}
return NS_OK;
}
/*---------------------------------------------------------------------------
EndDocumentLoad
Called on end of load in a single frame
----------------------------------------------------------------------------*/
nsresult nsEditingSession::EndDocumentLoad(nsIWebProgress* aWebProgress,
nsIChannel* aChannel,
nsresult aStatus,
bool aIsToBeMadeEditable) {
NS_ENSURE_ARG_POINTER(aWebProgress);
#ifdef NOISY_DOC_LOADING
printf("======= EndDocumentLoad ========\n");
printf("with status %d, ", aStatus);
nsCOMPtr<nsIURI> uri;
nsCString spec;
if (NS_SUCCEEDED(aChannel->GetURI(getter_AddRefs(uri)))) {
uri->GetSpec(spec);
printf(" uri %s\n", spec.get());
}
#endif
// We want to call the base class EndDocumentLoad,
// but avoid some of the stuff
// that nsDocShell does (need to refactor).
// OK, time to make an editor on this document
nsCOMPtr<mozIDOMWindowProxy> domWindow;
aWebProgress->GetDOMWindow(getter_AddRefs(domWindow));
NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
// Set the error state -- we will create an editor
// anyway and load empty doc later
if (aIsToBeMadeEditable && aStatus == NS_ERROR_FILE_NOT_FOUND) {
mEditorStatus = eEditorErrorFileNotFound;
}
auto* window = nsPIDOMWindowOuter::From(domWindow);
nsIDocShell* docShell = window->GetDocShell();
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE); // better error handling?
// cancel refresh from meta tags
// we need to make sure that all pages in editor (whether editable or not)
// can't refresh contents being edited
nsCOMPtr<nsIRefreshURI> refreshURI = do_QueryInterface(docShell);
if (refreshURI) {
refreshURI->CancelRefreshURITimers();
}
nsresult rv = NS_OK;
// did someone set the flag to make this shell editable?
if (aIsToBeMadeEditable && mCanCreateEditor) {
bool makeEditable;
docShell->GetEditable(&makeEditable);
if (makeEditable) {
// To keep pre Gecko 1.9 behavior, setup editor always when
// mMakeWholeDocumentEditable.
bool needsSetup = false;
if (mMakeWholeDocumentEditable) {
needsSetup = true;
} else {
// do we already have an editor here?
needsSetup = !docShell->GetHTMLEditor();
}
if (needsSetup) {
mCanCreateEditor = false;
rv = SetupEditorOnWindow(MOZ_KnownLive(*window));
if (NS_FAILED(rv)) {
// If we had an error, setup timer to load a blank page later
if (mLoadBlankDocTimer) {
// Must cancel previous timer?
mLoadBlankDocTimer->Cancel();
mLoadBlankDocTimer = nullptr;
}
rv = NS_NewTimerWithFuncCallback(getter_AddRefs(mLoadBlankDocTimer),
nsEditingSession::TimerCallback,
static_cast<void*>(mDocShell.get()),
10, nsITimer::TYPE_ONE_SHOT,
"nsEditingSession::EndDocumentLoad");
NS_ENSURE_SUCCESS(rv, rv);
mEditorStatus = eEditorCreationInProgress;
}
}
}
}
return rv;
}
void nsEditingSession::TimerCallback(nsITimer* aTimer, void* aClosure) {
nsCOMPtr<nsIDocShell> docShell =
do_QueryReferent(static_cast<nsIWeakReference*>(aClosure));
if (docShell) {
nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell));
if (webNav) {
LoadURIOptions loadURIOptions;
loadURIOptions.mTriggeringPrincipal =
nsContentUtils::GetSystemPrincipal();
nsCOMPtr<nsIURI> uri;
MOZ_ALWAYS_SUCCEEDS(NS_NewURI(getter_AddRefs(uri), "about:blank"_ns));
webNav->LoadURI(uri, loadURIOptions);
}
}
}
/*---------------------------------------------------------------------------
StartPageLoad
Called on start load of the entire page (incl. subframes)
----------------------------------------------------------------------------*/
nsresult nsEditingSession::StartPageLoad(nsIChannel* aChannel) {
#ifdef NOISY_DOC_LOADING
printf("======= StartPageLoad ========\n");
#endif
return NS_OK;
}
/*---------------------------------------------------------------------------
EndPageLoad
Called on end load of the entire page (incl. subframes)
----------------------------------------------------------------------------*/
nsresult nsEditingSession::EndPageLoad(nsIWebProgress* aWebProgress,
nsIChannel* aChannel, nsresult aStatus) {
#ifdef NOISY_DOC_LOADING
printf("======= EndPageLoad ========\n");
printf(" with status %d, ", aStatus);
nsCOMPtr<nsIURI> uri;
nsCString spec;
if (NS_SUCCEEDED(aChannel->GetURI(getter_AddRefs(uri)))) {
uri->GetSpec(spec);
printf("uri %s\n", spec.get());
}
nsAutoCString contentType;
aChannel->GetContentType(contentType);
if (!contentType.IsEmpty()) {
printf(" flags = %d, status = %d, MIMETYPE = %s\n", mEditorFlags,
mEditorStatus, contentType.get());
}
#endif
// Set the error state -- we will create an editor anyway
// and load empty doc later
if (aStatus == NS_ERROR_FILE_NOT_FOUND) {
mEditorStatus = eEditorErrorFileNotFound;
}
nsCOMPtr<mozIDOMWindowProxy> domWindow;
aWebProgress->GetDOMWindow(getter_AddRefs(domWindow));
nsIDocShell* docShell =
domWindow ? nsPIDOMWindowOuter::From(domWindow)->GetDocShell() : nullptr;
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
// cancel refresh from meta tags
// we need to make sure that all pages in editor (whether editable or not)
// can't refresh contents being edited
nsCOMPtr<nsIRefreshURI> refreshURI = do_QueryInterface(docShell);
if (refreshURI) {
refreshURI->CancelRefreshURITimers();
}
#if 0
// Shouldn't we do this when we want to edit sub-frames?
return MakeWindowEditable(domWindow, "html", false, mInteractive);
#else
return NS_OK;
#endif
}
/*---------------------------------------------------------------------------
PrepareForEditing
Set up this editing session for one or more editors
----------------------------------------------------------------------------*/
nsresult nsEditingSession::PrepareForEditing(nsPIDOMWindowOuter* aWindow) {
if (mProgressListenerRegistered) {
return NS_OK;
}
nsIDocShell* docShell = aWindow ? aWindow->GetDocShell() : nullptr;
// register callback
nsCOMPtr<nsIWebProgress> webProgress = do_GetInterface(docShell);
NS_ENSURE_TRUE(webProgress, NS_ERROR_FAILURE);
nsresult rv = webProgress->AddProgressListener(
this, (nsIWebProgress::NOTIFY_STATE_NETWORK |
nsIWebProgress::NOTIFY_STATE_DOCUMENT |
nsIWebProgress::NOTIFY_LOCATION));
mProgressListenerRegistered = NS_SUCCEEDED(rv);
return rv;
}
/*---------------------------------------------------------------------------
SetupEditorCommandController
Create a command controller, append to controllers,
get and return the controller ID, and set the context
----------------------------------------------------------------------------*/
nsresult nsEditingSession::SetupEditorCommandController(
nsEditingSession::ControllerCreatorFn aControllerCreatorFn,
mozIDOMWindowProxy* aWindow, nsISupports* aContext,
uint32_t* aControllerId) {
NS_ENSURE_ARG_POINTER(aControllerCreatorFn);
NS_ENSURE_ARG_POINTER(aWindow);
NS_ENSURE_ARG_POINTER(aContext);
NS_ENSURE_ARG_POINTER(aControllerId);
auto* piWindow = nsPIDOMWindowOuter::From(aWindow);
MOZ_ASSERT(piWindow);
nsCOMPtr<nsIControllers> controllers;
nsresult rv = piWindow->GetControllers(getter_AddRefs(controllers));
NS_ENSURE_SUCCESS(rv, rv);
// We only have to create each singleton controller once
// We know this has happened once we have a controllerId value
if (!*aControllerId) {
RefPtr<nsBaseCommandController> commandController = aControllerCreatorFn();
NS_ENSURE_TRUE(commandController, NS_ERROR_FAILURE);
// We must insert at head of the list to be sure our
// controller is found before other implementations
// (e.g., not-implemented versions by browser)
rv = controllers->InsertControllerAt(0, commandController);
NS_ENSURE_SUCCESS(rv, rv);
// Remember the ID for the controller
rv = controllers->GetControllerId(commandController, aControllerId);
NS_ENSURE_SUCCESS(rv, rv);
}
// Set the context
return SetContextOnControllerById(controllers, aContext, *aControllerId);
}
nsresult nsEditingSession::SetEditorOnControllers(nsPIDOMWindowOuter& aWindow,
HTMLEditor* aEditor) {
nsCOMPtr<nsIControllers> controllers;
nsresult rv = aWindow.GetControllers(getter_AddRefs(controllers));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsISupports> editorAsISupports = static_cast<nsIEditor*>(aEditor);
if (mBaseCommandControllerId) {
rv = SetContextOnControllerById(controllers, editorAsISupports,
mBaseCommandControllerId);
NS_ENSURE_SUCCESS(rv, rv);
}
if (mDocStateControllerId) {
rv = SetContextOnControllerById(controllers, editorAsISupports,
mDocStateControllerId);
NS_ENSURE_SUCCESS(rv, rv);
}
if (mHTMLCommandControllerId) {
rv = SetContextOnControllerById(controllers, editorAsISupports,
mHTMLCommandControllerId);
}
return rv;
}
nsresult nsEditingSession::SetContextOnControllerById(
nsIControllers* aControllers, nsISupports* aContext, uint32_t aID) {
NS_ENSURE_ARG_POINTER(aControllers);
// aContext can be null (when destroying editor)
nsCOMPtr<nsIController> controller;
aControllers->GetControllerById(aID, getter_AddRefs(controller));
// ok with nil controller
nsCOMPtr<nsIControllerContext> editorController =
do_QueryInterface(controller);
NS_ENSURE_TRUE(editorController, NS_ERROR_FAILURE);
return editorController->SetCommandContext(aContext);
}
void nsEditingSession::RemoveEditorControllers(nsPIDOMWindowOuter* aWindow) {
// Remove editor controllers from the aWindow, call when we're
// tearing down/detaching editor.
nsCOMPtr<nsIControllers> controllers;
if (aWindow) {
aWindow->GetControllers(getter_AddRefs(controllers));
}
if (controllers) {
nsCOMPtr<nsIController> controller;
if (mBaseCommandControllerId) {
controllers->GetControllerById(mBaseCommandControllerId,
getter_AddRefs(controller));
if (controller) {
controllers->RemoveController(controller);
}
}
if (mDocStateControllerId) {
controllers->GetControllerById(mDocStateControllerId,
getter_AddRefs(controller));
if (controller) {
controllers->RemoveController(controller);
}
}
if (mHTMLCommandControllerId) {
controllers->GetControllerById(mHTMLCommandControllerId,
getter_AddRefs(controller));
if (controller) {
controllers->RemoveController(controller);
}
}
}
// Clear IDs to trigger creation of new controllers.
mBaseCommandControllerId = 0;
mDocStateControllerId = 0;
mHTMLCommandControllerId = 0;
}
void nsEditingSession::RemoveWebProgressListener(nsPIDOMWindowOuter* aWindow) {
nsIDocShell* docShell = aWindow ? aWindow->GetDocShell() : nullptr;
nsCOMPtr<nsIWebProgress> webProgress = do_GetInterface(docShell);
if (webProgress) {
webProgress->RemoveProgressListener(this);
mProgressListenerRegistered = false;
}
}
void nsEditingSession::RestoreAnimationMode(nsPIDOMWindowOuter* aWindow) {
if (mInteractive) {
return;
}
nsCOMPtr<nsIDocShell> docShell = aWindow ? aWindow->GetDocShell() : nullptr;
NS_ENSURE_TRUE_VOID(docShell);
RefPtr<PresShell> presShell = docShell->GetPresShell();
if (NS_WARN_IF(!presShell)) {
return;
}
nsPresContext* presContext = presShell->GetPresContext();
NS_ENSURE_TRUE_VOID(presContext);
presContext->SetImageAnimationMode(mImageAnimationMode);
}
nsresult nsEditingSession::DetachFromWindow(nsPIDOMWindowOuter* aWindow) {
NS_ENSURE_TRUE(mDoneSetup, NS_OK);
NS_ASSERTION(mComposerCommandsUpdater,
"mComposerCommandsUpdater should exist.");
// Kill any existing reload timer
if (mLoadBlankDocTimer) {
mLoadBlankDocTimer->Cancel();
mLoadBlankDocTimer = nullptr;
}
// Remove controllers, webprogress listener, and otherwise
// make things the way they were before we started editing.
RemoveEditorControllers(aWindow);
RemoveWebProgressListener(aWindow);
RestoreJS(aWindow->GetCurrentInnerWindow());
RestoreAnimationMode(aWindow);
// Kill our weak reference to our original window, in case
// it changes on restore, or otherwise dies.
mDocShell = nullptr;
return NS_OK;
}
nsresult nsEditingSession::ReattachToWindow(nsPIDOMWindowOuter* aWindow) {
NS_ENSURE_TRUE(mDoneSetup, NS_OK);
NS_ENSURE_TRUE(aWindow, NS_ERROR_FAILURE);
NS_ASSERTION(mComposerCommandsUpdater,
"mComposerCommandsUpdater should exist.");
// Imitate nsEditorDocShell::MakeEditable() to reattach the
// old editor to the window.
nsresult rv;
nsIDocShell* docShell = aWindow->GetDocShell();
NS_ENSURE_TRUE(docShell, NS_ERROR_FAILURE);
mDocShell = do_GetWeakReference(docShell);
// Disable JS.
if (!mInteractive) {
rv = DisableJS(aWindow->GetCurrentInnerWindow());
NS_ENSURE_SUCCESS(rv, rv);
}
// Tells embedder that startup is in progress.
mEditorStatus = eEditorCreationInProgress;
// Adds back web progress listener.
rv = PrepareForEditing(aWindow);
NS_ENSURE_SUCCESS(rv, rv);
// Setup the command controllers again.
rv = SetupEditorCommandController(
nsBaseCommandController::CreateEditingController, aWindow,
static_cast<nsIEditingSession*>(this), &mBaseCommandControllerId);
NS_ENSURE_SUCCESS(rv, rv);
rv = SetupEditorCommandController(
nsBaseCommandController::CreateHTMLEditorDocStateController, aWindow,
static_cast<nsIEditingSession*>(this), &mDocStateControllerId);
NS_ENSURE_SUCCESS(rv, rv);
if (mComposerCommandsUpdater) {
mComposerCommandsUpdater->Init(*aWindow);
}
// Get editor
RefPtr<HTMLEditor> htmlEditor = GetHTMLEditorForWindow(aWindow);
if (NS_WARN_IF(!htmlEditor)) {
return NS_ERROR_FAILURE;
}
if (!mInteractive) {
// Disable animation of images in this document:
RefPtr<PresShell> presShell = docShell->GetPresShell();
if (NS_WARN_IF(!presShell)) {
return NS_ERROR_FAILURE;
}
nsPresContext* presContext = presShell->GetPresContext();
NS_ENSURE_TRUE(presContext, NS_ERROR_FAILURE);
mImageAnimationMode = presContext->ImageAnimationMode();
presContext->SetImageAnimationMode(imgIContainer::kDontAnimMode);
}
// The third controller takes an nsIEditor as the context
rv = SetupEditorCommandController(
nsBaseCommandController::CreateHTMLEditorController, aWindow,
static_cast<nsIEditor*>(htmlEditor.get()), &mHTMLCommandControllerId);
NS_ENSURE_SUCCESS(rv, rv);
// Set context on all controllers to be the editor
rv = SetEditorOnControllers(*aWindow, htmlEditor);
NS_ENSURE_SUCCESS(rv, rv);
#ifdef DEBUG
{
bool isEditable;
rv = WindowIsEditable(aWindow, &isEditable);
NS_ENSURE_SUCCESS(rv, rv);
NS_ASSERTION(isEditable,
"Window is not editable after reattaching editor.");
}
#endif // DEBUG
return NS_OK;
}
HTMLEditor* nsIEditingSession::GetHTMLEditorForWindow(
mozIDOMWindowProxy* aWindow) {
if (NS_WARN_IF(!aWindow)) {
return nullptr;
}
nsCOMPtr<nsIDocShell> docShell =
nsPIDOMWindowOuter::From(aWindow)->GetDocShell();
if (NS_WARN_IF(!docShell)) {
return nullptr;
}
return docShell->GetHTMLEditor();
}
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