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gecko/toolkit/components/places/History.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* 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 "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "nsXULAppAPI.h"
#include "History.h"
#include "nsNavHistory.h"
#include "nsNavBookmarks.h"
#include "nsAnnotationService.h"
#include "Helpers.h"
#include "PlaceInfo.h"
#include "VisitInfo.h"
#include "mozilla/storage.h"
#include "mozilla/dom/Link.h"
#include "nsDocShellCID.h"
#include "mozilla/Services.h"
#include "nsThreadUtils.h"
#include "nsNetUtil.h"
#include "nsIXPConnect.h"
#include "mozilla/unused.h"
#include "mozilla/Util.h"
#include "nsContentUtils.h"
#include "nsIMemoryReporter.h"
#include "mozilla/Attributes.h"
#include "mozilla/ipc/URIUtils.h"
// Initial size for the cache holding visited status observers.
#define VISIT_OBSERVERS_INITIAL_CACHE_SIZE 128
using namespace mozilla::dom;
using namespace mozilla::ipc;
using mozilla::unused;
namespace mozilla {
namespace places {
////////////////////////////////////////////////////////////////////////////////
//// Global Defines
#define URI_VISITED "visited"
#define URI_NOT_VISITED "not visited"
#define URI_VISITED_RESOLUTION_TOPIC "visited-status-resolution"
// Observer event fired after a visit has been registered in the DB.
#define URI_VISIT_SAVED "uri-visit-saved"
#define DESTINATIONFILEURI_ANNO \
NS_LITERAL_CSTRING("downloads/destinationFileURI")
#define DESTINATIONFILENAME_ANNO \
NS_LITERAL_CSTRING("downloads/destinationFileName")
////////////////////////////////////////////////////////////////////////////////
//// VisitData
struct VisitData {
VisitData()
: placeId(0)
, visitId(0)
, sessionId(0)
, hidden(true)
, typed(false)
, transitionType(PR_UINT32_MAX)
, visitTime(0)
, frecency(-1)
, titleChanged(false)
{
guid.SetIsVoid(true);
title.SetIsVoid(true);
}
VisitData(nsIURI* aURI,
nsIURI* aReferrer = NULL)
: placeId(0)
, visitId(0)
, sessionId(0)
, hidden(true)
, typed(false)
, transitionType(PR_UINT32_MAX)
, visitTime(0)
, frecency(-1)
, titleChanged(false)
{
(void)aURI->GetSpec(spec);
(void)GetReversedHostname(aURI, revHost);
if (aReferrer) {
(void)aReferrer->GetSpec(referrerSpec);
}
guid.SetIsVoid(true);
title.SetIsVoid(true);
}
/**
* Sets the transition type of the visit, as well as if it was typed.
*
* @param aTransitionType
* The transition type constant to set. Must be one of the
* TRANSITION_ constants on nsINavHistoryService.
*/
void SetTransitionType(uint32_t aTransitionType)
{
typed = aTransitionType == nsINavHistoryService::TRANSITION_TYPED;
transitionType = aTransitionType;
}
/**
* Determines if this refers to the same url as aOther, and updates aOther
* with missing information if so.
*
* @param aOther
* The other place to check against.
* @return true if this is a visit for the same place as aOther, false
* otherwise.
*/
bool IsSamePlaceAs(VisitData& aOther)
{
if (!spec.Equals(aOther.spec)) {
return false;
}
aOther.placeId = placeId;
aOther.guid = guid;
return true;
}
int64_t placeId;
nsCString guid;
int64_t visitId;
int64_t sessionId;
nsCString spec;
nsString revHost;
bool hidden;
bool typed;
uint32_t transitionType;
PRTime visitTime;
int32_t frecency;
/**
* Stores the title. If this is empty (IsEmpty() returns true), then the
* title should be removed from the Place. If the title is void (IsVoid()
* returns true), then no title has been set on this object, and titleChanged
* should remain false.
*/
nsString title;
nsCString referrerSpec;
// TODO bug 626836 hook up hidden and typed change tracking too!
bool titleChanged;
};
////////////////////////////////////////////////////////////////////////////////
//// Anonymous Helpers
namespace {
/**
* Obtains an nsIURI from the "uri" property of a JSObject.
*
* @param aCtx
* The JSContext for aObject.
* @param aObject
* The JSObject to get the URI from.
* @param aProperty
* The name of the property to get the URI from.
* @return the URI if it exists.
*/
already_AddRefed<nsIURI>
GetURIFromJSObject(JSContext* aCtx,
JSObject* aObject,
const char* aProperty)
{
jsval uriVal;
JSBool rc = JS_GetProperty(aCtx, aObject, aProperty, &uriVal);
NS_ENSURE_TRUE(rc, nullptr);
if (!JSVAL_IS_PRIMITIVE(uriVal)) {
nsCOMPtr<nsIXPConnect> xpc = mozilla::services::GetXPConnect();
nsCOMPtr<nsIXPConnectWrappedNative> wrappedObj;
nsresult rv = xpc->GetWrappedNativeOfJSObject(aCtx, JSVAL_TO_OBJECT(uriVal),
getter_AddRefs(wrappedObj));
NS_ENSURE_SUCCESS(rv, nullptr);
nsCOMPtr<nsIURI> uri = do_QueryWrappedNative(wrappedObj);
return uri.forget();
}
return nullptr;
}
/**
* Obtains the specified property of a JSObject.
*
* @param aCtx
* The JSContext for aObject.
* @param aObject
* The JSObject to get the string from.
* @param aProperty
* The property to get the value from.
* @param _string
* The string to populate with the value, or set it to void.
*/
void
GetStringFromJSObject(JSContext* aCtx,
JSObject* aObject,
const char* aProperty,
nsString& _string)
{
jsval val;
JSBool rc = JS_GetProperty(aCtx, aObject, aProperty, &val);
if (!rc || JSVAL_IS_VOID(val) ||
!(JSVAL_IS_NULL(val) || JSVAL_IS_STRING(val))) {
_string.SetIsVoid(true);
return;
}
// |null| in JS maps to the empty string.
if (JSVAL_IS_NULL(val)) {
_string.Truncate();
return;
}
size_t length;
const jschar* chars =
JS_GetStringCharsZAndLength(aCtx, JSVAL_TO_STRING(val), &length);
if (!chars) {
_string.SetIsVoid(true);
return;
}
_string.Assign(static_cast<const PRUnichar*>(chars), length);
}
/**
* Obtains the specified property of a JSObject.
*
* @param aCtx
* The JSContext for aObject.
* @param aObject
* The JSObject to get the int from.
* @param aProperty
* The property to get the value from.
* @param _int
* The integer to populate with the value on success.
*/
template <typename IntType>
nsresult
GetIntFromJSObject(JSContext* aCtx,
JSObject* aObject,
const char* aProperty,
IntType* _int)
{
jsval value;
JSBool rc = JS_GetProperty(aCtx, aObject, aProperty, &value);
NS_ENSURE_TRUE(rc, NS_ERROR_UNEXPECTED);
if (JSVAL_IS_VOID(value)) {
return NS_ERROR_INVALID_ARG;
}
NS_ENSURE_ARG(JSVAL_IS_PRIMITIVE(value));
NS_ENSURE_ARG(JSVAL_IS_NUMBER(value));
double num;
rc = JS_ValueToNumber(aCtx, value, &num);
NS_ENSURE_TRUE(rc, NS_ERROR_UNEXPECTED);
NS_ENSURE_ARG(IntType(num) == num);
*_int = IntType(num);
return NS_OK;
}
/**
* Obtains the specified property of a JSObject.
*
* @pre aArray must be an Array object.
*
* @param aCtx
* The JSContext for aArray.
* @param aArray
* The JSObject to get the object from.
* @param aIndex
* The index to get the object from.
* @param _object
* The JSObject pointer on success.
*/
nsresult
GetJSObjectFromArray(JSContext* aCtx,
JSObject* aArray,
uint32_t aIndex,
JSObject** _rooter)
{
NS_PRECONDITION(JS_IsArrayObject(aCtx, aArray),
"Must provide an object that is an array!");
jsval value;
JSBool rc = JS_GetElement(aCtx, aArray, aIndex, &value);
NS_ENSURE_TRUE(rc, NS_ERROR_UNEXPECTED);
NS_ENSURE_ARG(!JSVAL_IS_PRIMITIVE(value));
*_rooter = JSVAL_TO_OBJECT(value);
return NS_OK;
}
class VisitedQuery : public AsyncStatementCallback
{
public:
static nsresult Start(nsIURI* aURI,
mozIVisitedStatusCallback* aCallback=nullptr)
{
NS_PRECONDITION(aURI, "Null URI");
// If we are a content process, always remote the request to the
// parent process.
if (XRE_GetProcessType() == GeckoProcessType_Content) {
URIParams uri;
SerializeURI(aURI, uri);
mozilla::dom::ContentChild* cpc =
mozilla::dom::ContentChild::GetSingleton();
NS_ASSERTION(cpc, "Content Protocol is NULL!");
(void)cpc->SendStartVisitedQuery(uri);
return NS_OK;
}
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
NS_ENSURE_STATE(navHistory);
if (navHistory->hasEmbedVisit(aURI)) {
nsRefPtr<VisitedQuery> callback = new VisitedQuery(aURI, aCallback, true);
NS_ENSURE_TRUE(callback, NS_ERROR_OUT_OF_MEMORY);
// As per IHistory contract, we must notify asynchronously.
nsCOMPtr<nsIRunnable> event =
NS_NewRunnableMethod(callback, &VisitedQuery::NotifyVisitedStatus);
NS_DispatchToMainThread(event);
return NS_OK;
}
History* history = History::GetService();
NS_ENSURE_STATE(history);
mozIStorageAsyncStatement* stmt = history->GetIsVisitedStatement();
NS_ENSURE_STATE(stmt);
// Bind by index for performance.
nsresult rv = URIBinder::Bind(stmt, 0, aURI);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<VisitedQuery> callback = new VisitedQuery(aURI, aCallback);
NS_ENSURE_TRUE(callback, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<mozIStoragePendingStatement> handle;
return stmt->ExecuteAsync(callback, getter_AddRefs(handle));
}
NS_IMETHOD HandleResult(mozIStorageResultSet* aResults)
{
// If this method is called, we've gotten results, which means we have a
// visit.
mIsVisited = true;
return NS_OK;
}
NS_IMETHOD HandleError(mozIStorageError* aError)
{
// mIsVisited is already set to false, and that's the assumption we will
// make if an error occurred.
return NS_OK;
}
NS_IMETHOD HandleCompletion(uint16_t aReason)
{
if (aReason != mozIStorageStatementCallback::REASON_FINISHED) {
return NS_OK;
}
nsresult rv = NotifyVisitedStatus();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult NotifyVisitedStatus()
{
// If an external handling callback is provided, just notify through it.
if (mCallback) {
mCallback->IsVisited(mURI, mIsVisited);
return NS_OK;
}
if (mIsVisited) {
History* history = History::GetService();
NS_ENSURE_STATE(history);
history->NotifyVisited(mURI);
}
nsCOMPtr<nsIObserverService> observerService =
mozilla::services::GetObserverService();
if (observerService) {
nsAutoString status;
if (mIsVisited) {
status.AssignLiteral(URI_VISITED);
}
else {
status.AssignLiteral(URI_NOT_VISITED);
}
(void)observerService->NotifyObservers(mURI,
URI_VISITED_RESOLUTION_TOPIC,
status.get());
}
return NS_OK;
}
private:
VisitedQuery(nsIURI* aURI,
mozIVisitedStatusCallback *aCallback=nullptr,
bool aIsVisited=false)
: mURI(aURI)
, mCallback(aCallback)
, mIsVisited(aIsVisited)
{
}
nsCOMPtr<nsIURI> mURI;
nsCOMPtr<mozIVisitedStatusCallback> mCallback;
bool mIsVisited;
};
/**
* Notifies observers about a visit.
*/
class NotifyVisitObservers : public nsRunnable
{
public:
NotifyVisitObservers(VisitData& aPlace,
VisitData& aReferrer)
: mPlace(aPlace)
, mReferrer(aReferrer)
, mHistory(History::GetService())
{
}
NS_IMETHOD Run()
{
NS_PRECONDITION(NS_IsMainThread(),
"This should be called on the main thread");
// We are in the main thread, no need to lock.
if (mHistory->IsShuttingDown()) {
// If we are shutting down, we cannot notify the observers.
return NS_OK;
}
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
if (!navHistory) {
NS_WARNING("Trying to notify about a visit but cannot get the history service!");
return NS_OK;
}
nsCOMPtr<nsIURI> uri;
(void)NS_NewURI(getter_AddRefs(uri), mPlace.spec);
// Notify nsNavHistory observers of visit, but only for certain types of
// visits to maintain consistency with nsNavHistory::GetQueryResults.
if (!mPlace.hidden &&
mPlace.transitionType != nsINavHistoryService::TRANSITION_EMBED &&
mPlace.transitionType != nsINavHistoryService::TRANSITION_FRAMED_LINK) {
navHistory->NotifyOnVisit(uri, mPlace.visitId, mPlace.visitTime,
mPlace.sessionId, mReferrer.visitId,
mPlace.transitionType, mPlace.guid);
}
nsCOMPtr<nsIObserverService> obsService =
mozilla::services::GetObserverService();
if (obsService) {
DebugOnly<nsresult> rv =
obsService->NotifyObservers(uri, URI_VISIT_SAVED, nullptr);
NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Could not notify observers");
}
History* history = History::GetService();
NS_ENSURE_STATE(history);
history->AppendToRecentlyVisitedURIs(uri);
history->NotifyVisited(uri);
return NS_OK;
}
private:
VisitData mPlace;
VisitData mReferrer;
nsRefPtr<History> mHistory;
};
/**
* Notifies observers about a pages title changing.
*/
class NotifyTitleObservers : public nsRunnable
{
public:
/**
* Notifies observers on the main thread.
*
* @param aSpec
* The spec of the URI to notify about.
* @param aTitle
* The new title to notify about.
*/
NotifyTitleObservers(const nsCString& aSpec,
const nsString& aTitle,
const nsCString& aGUID)
: mSpec(aSpec)
, mTitle(aTitle)
, mGUID(aGUID)
{
}
NS_IMETHOD Run()
{
NS_PRECONDITION(NS_IsMainThread(),
"This should be called on the main thread");
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
NS_ENSURE_TRUE(navHistory, NS_ERROR_OUT_OF_MEMORY);
nsCOMPtr<nsIURI> uri;
(void)NS_NewURI(getter_AddRefs(uri), mSpec);
navHistory->NotifyTitleChange(uri, mTitle, mGUID);
return NS_OK;
}
private:
const nsCString mSpec;
const nsString mTitle;
const nsCString mGUID;
};
/**
* Notifies a callback object when a visit has been handled.
*/
class NotifyVisitInfoCallback : public nsRunnable
{
public:
NotifyVisitInfoCallback(mozIVisitInfoCallback* aCallback,
const VisitData& aPlace,
nsresult aResult)
: mCallback(aCallback)
, mPlace(aPlace)
, mResult(aResult)
{
NS_PRECONDITION(aCallback, "Must pass a non-null callback!");
}
NS_IMETHOD Run()
{
NS_PRECONDITION(NS_IsMainThread(),
"This should be called on the main thread");
nsCOMPtr<nsIURI> referrerURI;
if (!mPlace.referrerSpec.IsEmpty()) {
(void)NS_NewURI(getter_AddRefs(referrerURI), mPlace.referrerSpec);
}
nsCOMPtr<mozIVisitInfo> visit =
new VisitInfo(mPlace.visitId, mPlace.visitTime, mPlace.transitionType,
referrerURI.forget(), mPlace.sessionId);
PlaceInfo::VisitsArray visits;
(void)visits.AppendElement(visit);
nsCOMPtr<nsIURI> uri;
(void)NS_NewURI(getter_AddRefs(uri), mPlace.spec);
// We do not notify about the frecency of the place.
nsCOMPtr<mozIPlaceInfo> place =
new PlaceInfo(mPlace.placeId, mPlace.guid, uri.forget(), mPlace.title,
-1, visits);
if (NS_SUCCEEDED(mResult)) {
(void)mCallback->HandleResult(place);
}
else {
(void)mCallback->HandleError(mResult, place);
}
return NS_OK;
}
private:
/**
* Callers MUST hold a strong reference to this that outlives us because we
* may be created off of the main thread, and therefore cannot call AddRef on
* this object (and therefore cannot hold a strong reference to it).
*/
mozIVisitInfoCallback* mCallback;
VisitData mPlace;
const nsresult mResult;
};
/**
* Notifies a callback object when the operation is complete.
*/
class NotifyCompletion : public nsRunnable
{
public:
NotifyCompletion(mozIVisitInfoCallback* aCallback)
: mCallback(aCallback)
{
NS_PRECONDITION(aCallback, "Must pass a non-null callback!");
}
NS_IMETHOD Run()
{
if (NS_IsMainThread()) {
(void)mCallback->HandleCompletion();
}
else {
(void)NS_DispatchToMainThread(this);
// Also dispatch an event to release the reference to the callback after
// we have run.
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
(void)NS_ProxyRelease(mainThread, mCallback, true);
}
return NS_OK;
}
private:
/**
* Callers MUST hold a strong reference to this because we may be created
* off of the main thread, and therefore cannot call AddRef on this object
* (and therefore cannot hold a strong reference to it). If invoked from a
* background thread, NotifyCompletion will release the reference to this.
*/
mozIVisitInfoCallback* mCallback;
};
/**
* Checks to see if we can add aURI to history, and dispatches an error to
* aCallback (if provided) if we cannot.
*
* @param aURI
* The URI to check.
* @param [optional] aGUID
* The guid of the URI to check. This is passed back to the callback.
* @param [optional] aCallback
* The callback to notify if the URI cannot be added to history.
* @return true if the URI can be added to history, false otherwise.
*/
bool
CanAddURI(nsIURI* aURI,
const nsCString& aGUID = EmptyCString(),
mozIVisitInfoCallback* aCallback = NULL)
{
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
NS_ENSURE_TRUE(navHistory, false);
bool canAdd;
nsresult rv = navHistory->CanAddURI(aURI, &canAdd);
if (NS_SUCCEEDED(rv) && canAdd) {
return true;
};
// We cannot add the URI. Notify the callback, if we were given one.
if (aCallback) {
// NotifyVisitInfoCallback does not hold a strong reference to the callback, so we
// have to manage it by AddRefing now and then releasing it after the event
// has run.
NS_ADDREF(aCallback);
VisitData place(aURI);
place.guid = aGUID;
nsCOMPtr<nsIRunnable> event =
new NotifyVisitInfoCallback(aCallback, place, NS_ERROR_INVALID_ARG);
(void)NS_DispatchToMainThread(event);
// Also dispatch an event to release our reference to the callback after
// NotifyVisitInfoCallback has run.
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
(void)NS_ProxyRelease(mainThread, aCallback, true);
}
return false;
}
/**
* Adds a visit to the database.
*/
class InsertVisitedURIs : public nsRunnable
{
public:
/**
* Adds a visit to the database asynchronously.
*
* @param aConnection
* The database connection to use for these operations.
* @param aPlaces
* The locations to record visits.
* @param [optional] aCallback
* The callback to notify about the visit.
*/
static nsresult Start(mozIStorageConnection* aConnection,
nsTArray<VisitData>& aPlaces,
mozIVisitInfoCallback* aCallback = NULL)
{
NS_PRECONDITION(NS_IsMainThread(),
"This should be called on the main thread");
NS_PRECONDITION(aPlaces.Length() > 0, "Must pass a non-empty array!");
nsRefPtr<InsertVisitedURIs> event =
new InsertVisitedURIs(aConnection, aPlaces, aCallback);
// Get the target thread, and then start the work!
nsCOMPtr<nsIEventTarget> target = do_GetInterface(aConnection);
NS_ENSURE_TRUE(target, NS_ERROR_UNEXPECTED);
nsresult rv = target->Dispatch(event, NS_DISPATCH_NORMAL);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHOD Run()
{
NS_PRECONDITION(!NS_IsMainThread(),
"This should not be called on the main thread");
// Prevent the main thread from shutting down while this is running.
MutexAutoLock lockedScope(mHistory->GetShutdownMutex());
if(mHistory->IsShuttingDown()) {
// If we were already shutting down, we cannot insert the URIs.
return NS_OK;
}
mozStorageTransaction transaction(mDBConn, false,
mozIStorageConnection::TRANSACTION_IMMEDIATE);
VisitData* lastPlace = NULL;
for (nsTArray<VisitData>::size_type i = 0; i < mPlaces.Length(); i++) {
VisitData& place = mPlaces.ElementAt(i);
VisitData& referrer = mReferrers.ElementAt(i);
// We can avoid a database lookup if it's the same place as the last
// visit we added.
bool known = (lastPlace && lastPlace->IsSamePlaceAs(place)) ||
mHistory->FetchPageInfo(place);
FetchReferrerInfo(referrer, place);
nsresult rv = DoDatabaseInserts(known, place, referrer);
if (mCallback) {
nsCOMPtr<nsIRunnable> event =
new NotifyVisitInfoCallback(mCallback, place, rv);
nsresult rv2 = NS_DispatchToMainThread(event);
NS_ENSURE_SUCCESS(rv2, rv2);
}
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIRunnable> event = new NotifyVisitObservers(place, referrer);
rv = NS_DispatchToMainThread(event);
NS_ENSURE_SUCCESS(rv, rv);
// Notify about title change if needed.
if ((!known && !place.title.IsVoid()) || place.titleChanged) {
event = new NotifyTitleObservers(place.spec, place.title, place.guid);
rv = NS_DispatchToMainThread(event);
NS_ENSURE_SUCCESS(rv, rv);
}
lastPlace = &mPlaces.ElementAt(i);
}
nsresult rv = transaction.Commit();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
private:
InsertVisitedURIs(mozIStorageConnection* aConnection,
nsTArray<VisitData>& aPlaces,
mozIVisitInfoCallback* aCallback)
: mDBConn(aConnection)
, mCallback(aCallback)
, mHistory(History::GetService())
{
NS_PRECONDITION(NS_IsMainThread(),
"This should be called on the main thread");
(void)mPlaces.SwapElements(aPlaces);
(void)mReferrers.SetLength(mPlaces.Length());
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
NS_ABORT_IF_FALSE(navHistory, "Could not get nsNavHistory?!");
for (nsTArray<VisitData>::size_type i = 0; i < mPlaces.Length(); i++) {
mReferrers[i].spec = mPlaces[i].referrerSpec;
// If we are inserting a place into an empty mPlaces array, we need to
// check to make sure we do not store a bogus session id that is higher
// than the current maximum session id.
if (i == 0) {
int64_t newSessionId = navHistory->GetNewSessionID();
if (mPlaces[0].sessionId > newSessionId) {
mPlaces[0].sessionId = newSessionId;
}
}
// Speculatively get a new session id for our visit if the current session
// id is non-valid or if it is larger than the current largest session id.
// While it is true that we will use the session id from the referrer if
// the visit was "recent" enough, we cannot call this method off of the
// main thread, so we have to consume an id now.
if (mPlaces[i].sessionId <= 0 ||
(i > 0 && mPlaces[i].sessionId >= mPlaces[0].sessionId)) {
mPlaces[i].sessionId = navHistory->GetNewSessionID();
}
#ifdef DEBUG
nsCOMPtr<nsIURI> uri;
(void)NS_NewURI(getter_AddRefs(uri), mPlaces[i].spec);
NS_ASSERTION(CanAddURI(uri),
"Passed a VisitData with a URI we cannot add to history!");
#endif
}
// We AddRef on the main thread, and release it when we are destroyed.
NS_IF_ADDREF(mCallback);
}
virtual ~InsertVisitedURIs()
{
if (mCallback) {
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
(void)NS_ProxyRelease(mainThread, mCallback, true);
}
}
/**
* Inserts or updates the entry in moz_places for this visit, adds the visit,
* and updates the frecency of the place.
*
* @param aKnown
* True if we already have an entry for this place in moz_places, false
* otherwise.
* @param aPlace
* The place we are adding a visit for.
* @param aReferrer
* The referrer for aPlace.
*/
nsresult DoDatabaseInserts(bool aKnown,
VisitData& aPlace,
VisitData& aReferrer)
{
NS_PRECONDITION(!NS_IsMainThread(),
"This should not be called on the main thread");
// If the page was in moz_places, we need to update the entry.
nsresult rv;
if (aKnown) {
rv = mHistory->UpdatePlace(aPlace);
NS_ENSURE_SUCCESS(rv, rv);
}
// Otherwise, the page was not in moz_places, so now we have to add it.
else {
rv = mHistory->InsertPlace(aPlace);
NS_ENSURE_SUCCESS(rv, rv);
// We need the place id and guid of the page we just inserted when we
// have a callback or when the GUID isn't known. No point in doing the
// disk I/O if we do not need it.
if (mCallback || aPlace.guid.IsEmpty()) {
bool exists = mHistory->FetchPageInfo(aPlace);
if (!exists) {
NS_NOTREACHED("should have an entry in moz_places");
}
}
}
rv = AddVisit(aPlace, aReferrer);
NS_ENSURE_SUCCESS(rv, rv);
// TODO (bug 623969) we shouldn't update this after each visit, but
// rather only for each unique place to save disk I/O.
rv = UpdateFrecency(aPlace);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
/**
* Loads visit information about the page into _place.
*
* @param _place
* The VisitData for the place we need to know visit information about.
* @param [optional] aThresholdStart
* The timestamp of a new visit (not represented by _place) used to
* determine if the page was recently visited or not.
* @return true if the page was recently (determined with aThresholdStart)
* visited, false otherwise.
*/
bool FetchVisitInfo(VisitData& _place,
PRTime aThresholdStart = 0)
{
NS_PRECONDITION(!_place.spec.IsEmpty(), "must have a non-empty spec!");
nsCOMPtr<mozIStorageStatement> stmt;
// If we have a visitTime, we want information on that specific visit.
if (_place.visitTime) {
stmt = mHistory->GetStatement(
"SELECT id, session, visit_date "
"FROM moz_historyvisits "
"WHERE place_id = (SELECT id FROM moz_places WHERE url = :page_url) "
"AND visit_date = :visit_date "
);
NS_ENSURE_TRUE(stmt, false);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("visit_date"),
_place.visitTime);
NS_ENSURE_SUCCESS(rv, false);
scoper.Abandon();
}
// Otherwise, we want information about the most recent visit.
else {
stmt = mHistory->GetStatement(
"SELECT id, session, visit_date "
"FROM moz_historyvisits "
"WHERE place_id = (SELECT id FROM moz_places WHERE url = :page_url) "
"ORDER BY visit_date DESC "
);
NS_ENSURE_TRUE(stmt, false);
}
mozStorageStatementScoper scoper(stmt);
nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"),
_place.spec);
NS_ENSURE_SUCCESS(rv, false);
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, false);
if (!hasResult) {
return false;
}
rv = stmt->GetInt64(0, &_place.visitId);
NS_ENSURE_SUCCESS(rv, false);
rv = stmt->GetInt64(1, &_place.sessionId);
NS_ENSURE_SUCCESS(rv, false);
rv = stmt->GetInt64(2, reinterpret_cast<int64_t*>(&_place.visitTime));
NS_ENSURE_SUCCESS(rv, false);
// If we have been given a visit threshold start time, go ahead and
// calculate if we have been recently visited.
if (aThresholdStart &&
aThresholdStart - _place.visitTime <= RECENT_EVENT_THRESHOLD) {
return true;
}
return false;
}
/**
* Fetches information about a referrer and sets the session id for aPlace if
* it was a recent visit or not.
*
* @param aReferrer
* The VisitData for the referrer. This will be populated with
* FetchVisitInfo.
* @param aPlace
* The VisitData for the visit we will eventually add.
*
*/
void FetchReferrerInfo(VisitData& aReferrer,
VisitData& aPlace)
{
if (aReferrer.spec.IsEmpty()) {
return;
}
// If we had a referrer, we want to know about its last visit to put this
// new visit into the same session.
bool recentVisit = FetchVisitInfo(aReferrer, aPlace.visitTime);
// At this point, we know the referrer's session id, which this new visit
// should also share.
if (recentVisit) {
aPlace.sessionId = aReferrer.sessionId;
}
// However, if it isn't recent enough, we don't care to log anything about
// the referrer and we'll start a new session.
else {
// We must change both the place and referrer to indicate that we will
// not be using the referrer's data. This behavior has test coverage, so
// if this invariant changes, we'll know.
aPlace.referrerSpec.Truncate();
aReferrer.visitId = 0;
}
}
/**
* Adds a visit for _place and updates it with the right visit id.
*
* @param _place
* The VisitData for the place we need to know visit information about.
* @param aReferrer
* A reference to the referrer's visit data.
*/
nsresult AddVisit(VisitData& _place,
const VisitData& aReferrer)
{
nsresult rv;
nsCOMPtr<mozIStorageStatement> stmt;
if (_place.placeId) {
stmt = mHistory->GetStatement(
"INSERT INTO moz_historyvisits "
"(from_visit, place_id, visit_date, visit_type, session) "
"VALUES (:from_visit, :page_id, :visit_date, :visit_type, :session) "
);
NS_ENSURE_STATE(stmt);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"), _place.placeId);
NS_ENSURE_SUCCESS(rv, rv);
}
else {
stmt = mHistory->GetStatement(
"INSERT INTO moz_historyvisits "
"(from_visit, place_id, visit_date, visit_type, session) "
"VALUES (:from_visit, (SELECT id FROM moz_places WHERE url = :page_url), :visit_date, :visit_type, :session) "
);
NS_ENSURE_STATE(stmt);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), _place.spec);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("from_visit"),
aReferrer.visitId);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("visit_date"),
_place.visitTime);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t transitionType = _place.transitionType;
NS_ASSERTION(transitionType >= nsINavHistoryService::TRANSITION_LINK &&
transitionType <= nsINavHistoryService::TRANSITION_FRAMED_LINK,
"Invalid transition type!");
rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("visit_type"),
transitionType);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("session"),
_place.sessionId);
NS_ENSURE_SUCCESS(rv, rv);
mozStorageStatementScoper scoper(stmt);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
// Now that it should be in the database, we need to obtain the id of the
// visit we just added.
(void)FetchVisitInfo(_place);
return NS_OK;
}
/**
* Updates the frecency, and possibly the hidden-ness of aPlace.
*
* @param aPlace
* The VisitData for the place we want to update.
*/
nsresult UpdateFrecency(const VisitData& aPlace)
{
// Don't update frecency if the page should not appear in autocomplete.
if (aPlace.frecency == 0) {
return NS_OK;
}
nsresult rv;
{ // First, set our frecency to the proper value.
nsCOMPtr<mozIStorageStatement> stmt;
if (aPlace.placeId) {
stmt = mHistory->GetStatement(
"UPDATE moz_places "
"SET frecency = CALCULATE_FRECENCY(:page_id) "
"WHERE id = :page_id"
);
NS_ENSURE_STATE(stmt);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"), aPlace.placeId);
NS_ENSURE_SUCCESS(rv, rv);
}
else {
stmt = mHistory->GetStatement(
"UPDATE moz_places "
"SET frecency = CALCULATE_FRECENCY(id) "
"WHERE url = :page_url"
);
NS_ENSURE_STATE(stmt);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aPlace.spec);
NS_ENSURE_SUCCESS(rv, rv);
}
mozStorageStatementScoper scoper(stmt);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
}
if (!aPlace.hidden) {
// Mark the page as not hidden if the frecency is now nonzero.
nsCOMPtr<mozIStorageStatement> stmt;
if (aPlace.placeId) {
stmt = mHistory->GetStatement(
"UPDATE moz_places "
"SET hidden = 0 "
"WHERE id = :page_id AND frecency <> 0"
);
NS_ENSURE_STATE(stmt);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"), aPlace.placeId);
NS_ENSURE_SUCCESS(rv, rv);
}
else {
stmt = mHistory->GetStatement(
"UPDATE moz_places "
"SET hidden = 0 "
"WHERE url = :page_url AND frecency <> 0"
);
NS_ENSURE_STATE(stmt);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"), aPlace.spec);
NS_ENSURE_SUCCESS(rv, rv);
}
mozStorageStatementScoper scoper(stmt);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
mozIStorageConnection* mDBConn;
nsTArray<VisitData> mPlaces;
nsTArray<VisitData> mReferrers;
/**
* We own a strong reference to this, but in an indirect way. We call AddRef
* in our constructor, which happens on the main thread, and proxy the relase
* of the object to the main thread in our destructor.
*/
mozIVisitInfoCallback* mCallback;
/**
* Strong reference to the History object because we do not want it to
* disappear out from under us.
*/
nsRefPtr<History> mHistory;
};
/**
* Sets the page title for a page in moz_places (if necessary).
*/
class SetPageTitle : public nsRunnable
{
public:
/**
* Sets a pages title in the database asynchronously.
*
* @param aConnection
* The database connection to use for this operation.
* @param aURI
* The URI to set the page title on.
* @param aTitle
* The title to set for the page, if the page exists.
*/
static nsresult Start(mozIStorageConnection* aConnection,
nsIURI* aURI,
const nsAString& aTitle)
{
NS_PRECONDITION(NS_IsMainThread(),
"This should be called on the main thread");
NS_PRECONDITION(aURI, "Must pass a non-null URI object!");
nsCString spec;
nsresult rv = aURI->GetSpec(spec);
NS_ENSURE_SUCCESS(rv, rv);
nsRefPtr<SetPageTitle> event = new SetPageTitle(spec, aTitle);
// Get the target thread, and then start the work!
nsCOMPtr<nsIEventTarget> target = do_GetInterface(aConnection);
NS_ENSURE_TRUE(target, NS_ERROR_UNEXPECTED);
rv = target->Dispatch(event, NS_DISPATCH_NORMAL);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMETHOD Run()
{
NS_PRECONDITION(!NS_IsMainThread(),
"This should not be called on the main thread");
// First, see if the page exists in the database (we'll need its id later).
bool exists = mHistory->FetchPageInfo(mPlace);
if (!exists || !mPlace.titleChanged) {
// We have no record of this page, or we have no title change, so there
// is no need to do any further work.
return NS_OK;
}
NS_ASSERTION(mPlace.placeId > 0,
"We somehow have an invalid place id here!");
// Now we can update our database record.
nsCOMPtr<mozIStorageStatement> stmt =
mHistory->GetStatement(
"UPDATE moz_places "
"SET title = :page_title "
"WHERE id = :page_id "
);
NS_ENSURE_STATE(stmt);
{
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"),
mPlace.placeId);
NS_ENSURE_SUCCESS(rv, rv);
// Empty strings should clear the title, just like
// nsNavHistory::SetPageTitle.
if (mPlace.title.IsEmpty()) {
rv = stmt->BindNullByName(NS_LITERAL_CSTRING("page_title"));
}
else {
rv = stmt->BindStringByName(NS_LITERAL_CSTRING("page_title"),
StringHead(mPlace.title, TITLE_LENGTH_MAX));
}
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsIRunnable> event =
new NotifyTitleObservers(mPlace.spec, mPlace.title, mPlace.guid);
nsresult rv = NS_DispatchToMainThread(event);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
private:
SetPageTitle(const nsCString& aSpec,
const nsAString& aTitle)
: mHistory(History::GetService())
{
mPlace.spec = aSpec;
mPlace.title = aTitle;
}
VisitData mPlace;
/**
* Strong reference to the History object because we do not want it to
* disappear out from under us.
*/
nsRefPtr<History> mHistory;
};
/**
* Adds download-specific annotations to a download page.
*/
class SetDownloadAnnotations MOZ_FINAL : public mozIVisitInfoCallback
{
public:
NS_DECL_ISUPPORTS
SetDownloadAnnotations(nsIURI* aDestination)
: mDestination(aDestination)
, mHistory(History::GetService())
{
MOZ_ASSERT(mDestination);
MOZ_ASSERT(NS_IsMainThread());
}
NS_IMETHOD HandleError(nsresult aResultCode, mozIPlaceInfo *aPlaceInfo)
{
// Just don't add the annotations in case the visit isn't added.
return NS_OK;
}
NS_IMETHOD HandleResult(mozIPlaceInfo *aPlaceInfo)
{
// Exit silently if the download destination is not a local file.
nsCOMPtr<nsIFileURL> destinationFileURL = do_QueryInterface(mDestination);
if (!destinationFileURL) {
return NS_OK;
}
nsCOMPtr<nsIURI> source;
nsresult rv = aPlaceInfo->GetUri(getter_AddRefs(source));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> destinationFile;
rv = destinationFileURL->GetFile(getter_AddRefs(destinationFile));
NS_ENSURE_SUCCESS(rv, rv);
nsAutoString destinationFileName;
rv = destinationFile->GetLeafName(destinationFileName);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString destinationURISpec;
rv = destinationFileURL->GetSpec(destinationURISpec);
NS_ENSURE_SUCCESS(rv, rv);
// Use annotations for storing the additional download metadata.
nsAnnotationService* annosvc = nsAnnotationService::GetAnnotationService();
NS_ENSURE_TRUE(annosvc, NS_ERROR_OUT_OF_MEMORY);
rv = annosvc->SetPageAnnotationString(
source,
DESTINATIONFILEURI_ANNO,
NS_ConvertUTF8toUTF16(destinationURISpec),
0,
nsIAnnotationService::EXPIRE_WITH_HISTORY
);
NS_ENSURE_SUCCESS(rv, rv);
rv = annosvc->SetPageAnnotationString(
source,
DESTINATIONFILENAME_ANNO,
destinationFileName,
0,
nsIAnnotationService::EXPIRE_WITH_HISTORY
);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoString title;
rv = aPlaceInfo->GetTitle(title);
NS_ENSURE_SUCCESS(rv, rv);
// In case we are downloading a file that does not correspond to a web
// page for which the title is present, we populate the otherwise empty
// history title with the name of the destination file, to allow it to be
// visible and searchable in history results.
if (title.IsEmpty()) {
rv = mHistory->SetURITitle(source, destinationFileName);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
NS_IMETHOD HandleCompletion()
{
return NS_OK;
}
private:
nsCOMPtr<nsIURI> mDestination;
/**
* Strong reference to the History object because we do not want it to
* disappear out from under us.
*/
nsRefPtr<History> mHistory;
};
NS_IMPL_ISUPPORTS1(
SetDownloadAnnotations,
mozIVisitInfoCallback
)
/**
* Stores an embed visit, and notifies observers.
*
* @param aPlace
* The VisitData of the visit to store as an embed visit.
* @param [optional] aCallback
* The mozIVisitInfoCallback to notify, if provided.
*/
void
StoreAndNotifyEmbedVisit(VisitData& aPlace,
mozIVisitInfoCallback* aCallback = NULL)
{
NS_PRECONDITION(aPlace.transitionType == nsINavHistoryService::TRANSITION_EMBED,
"Must only pass TRANSITION_EMBED visits to this!");
NS_PRECONDITION(NS_IsMainThread(), "Must be called on the main thread!");
nsCOMPtr<nsIURI> uri;
(void)NS_NewURI(getter_AddRefs(uri), aPlace.spec);
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
if (!navHistory || !uri) {
return;
}
navHistory->registerEmbedVisit(uri, aPlace.visitTime);
if (aCallback) {
// NotifyVisitInfoCallback does not hold a strong reference to the callback,
// so we have to manage it by AddRefing now and then releasing it after the
// event has run.
NS_ADDREF(aCallback);
nsCOMPtr<nsIRunnable> event =
new NotifyVisitInfoCallback(aCallback, aPlace, NS_OK);
(void)NS_DispatchToMainThread(event);
// Also dispatch an event to release our reference to the callback after
// NotifyVisitInfoCallback has run.
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
(void)NS_ProxyRelease(mainThread, aCallback, true);
}
VisitData noReferrer;
nsCOMPtr<nsIRunnable> event = new NotifyVisitObservers(aPlace, noReferrer);
(void)NS_DispatchToMainThread(event);
}
NS_MEMORY_REPORTER_MALLOC_SIZEOF_FUN(HistoryLinksHashtableMallocSizeOf,
"history-links-hashtable")
int64_t GetHistoryObserversSize()
{
History* history = History::GetService();
return history ?
history->SizeOfIncludingThis(HistoryLinksHashtableMallocSizeOf) : 0;
}
NS_MEMORY_REPORTER_IMPLEMENT(HistoryService,
"explicit/history-links-hashtable",
KIND_HEAP,
UNITS_BYTES,
GetHistoryObserversSize,
"Memory used by the hashtable of observers Places uses to notify objects of "
"changes to links' visited state.")
} // anonymous namespace
////////////////////////////////////////////////////////////////////////////////
//// History
History* History::gService = NULL;
History::History()
: mShuttingDown(false)
, mShutdownMutex("History::mShutdownMutex")
, mRecentlyVisitedURIsNextIndex(0)
{
NS_ASSERTION(!gService, "Ruh-roh! This service has already been created!");
gService = this;
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
NS_WARN_IF_FALSE(os, "Observer service was not found!");
if (os) {
(void)os->AddObserver(this, TOPIC_PLACES_SHUTDOWN, false);
}
NS_RegisterMemoryReporter(new NS_MEMORY_REPORTER_NAME(HistoryService));
}
History::~History()
{
gService = NULL;
#ifdef DEBUG
if (mObservers.IsInitialized()) {
NS_ASSERTION(mObservers.Count() == 0,
"Not all Links were removed before we disappear!");
}
#endif
}
void
History::NotifyVisited(nsIURI* aURI)
{
NS_ASSERTION(aURI, "Ruh-roh! A NULL URI was passed to us!");
nsAutoScriptBlocker scriptBlocker;
if (XRE_GetProcessType() == GeckoProcessType_Default) {
URIParams uri;
SerializeURI(aURI, uri);
nsTArray<ContentParent*> cplist;
ContentParent::GetAll(cplist);
for (uint32_t i = 0; i < cplist.Length(); ++i) {
unused << cplist[i]->SendNotifyVisited(uri);
}
}
// If the hash table has not been initialized, then we have nothing to notify
// about.
if (!mObservers.IsInitialized()) {
return;
}
// Additionally, if we have no observers for this URI, we have nothing to
// notify about.
KeyClass* key = mObservers.GetEntry(aURI);
if (!key) {
return;
}
// Update status of each Link node.
{
// RemoveEntry will destroy the array, this iterator should not survive it.
ObserverArray::ForwardIterator iter(key->array);
while (iter.HasMore()) {
Link* link = iter.GetNext();
link->SetLinkState(eLinkState_Visited);
// Verify that the observers hash doesn't mutate while looping through
// the links associated with this URI.
NS_ABORT_IF_FALSE(key == mObservers.GetEntry(aURI),
"The URIs hash mutated!");
}
}
// All the registered nodes can now be removed for this URI.
mObservers.RemoveEntry(aURI);
}
mozIStorageAsyncStatement*
History::GetIsVisitedStatement()
{
if (mIsVisitedStatement) {
return mIsVisitedStatement;
}
// If we don't yet have a database connection, go ahead and clone it now.
if (!mReadOnlyDBConn) {
mozIStorageConnection* dbConn = GetDBConn();
NS_ENSURE_TRUE(dbConn, nullptr);
(void)dbConn->Clone(true, getter_AddRefs(mReadOnlyDBConn));
NS_ENSURE_TRUE(mReadOnlyDBConn, nullptr);
}
// Now we can create our cached statement.
nsresult rv = mReadOnlyDBConn->CreateAsyncStatement(NS_LITERAL_CSTRING(
"SELECT 1 "
"FROM moz_places h "
"WHERE url = ?1 "
"AND last_visit_date NOTNULL "
), getter_AddRefs(mIsVisitedStatement));
NS_ENSURE_SUCCESS(rv, nullptr);
return mIsVisitedStatement;
}
nsresult
History::InsertPlace(const VisitData& aPlace)
{
NS_PRECONDITION(aPlace.placeId == 0, "should not have a valid place id!");
NS_PRECONDITION(!NS_IsMainThread(), "must be called off of the main thread!");
nsCOMPtr<mozIStorageStatement> stmt = GetStatement(
"INSERT INTO moz_places "
"(url, title, rev_host, hidden, typed, frecency, guid) "
"VALUES (:url, :title, :rev_host, :hidden, :typed, :frecency, :guid) "
);
NS_ENSURE_STATE(stmt);
mozStorageStatementScoper scoper(stmt);
nsresult rv = stmt->BindStringByName(NS_LITERAL_CSTRING("rev_host"),
aPlace.revHost);
NS_ENSURE_SUCCESS(rv, rv);
rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("url"), aPlace.spec);
NS_ENSURE_SUCCESS(rv, rv);
// Empty strings should have no title, just like nsNavHistory::SetPageTitle.
if (aPlace.title.IsEmpty()) {
rv = stmt->BindNullByName(NS_LITERAL_CSTRING("title"));
}
else {
rv = stmt->BindStringByName(NS_LITERAL_CSTRING("title"),
StringHead(aPlace.title, TITLE_LENGTH_MAX));
}
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("typed"), aPlace.typed);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("frecency"), aPlace.frecency);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("hidden"), aPlace.hidden);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString guid(aPlace.guid);
if (aPlace.guid.IsVoid()) {
rv = GenerateGUID(guid);
NS_ENSURE_SUCCESS(rv, rv);
}
rv = stmt->BindUTF8StringByName(NS_LITERAL_CSTRING("guid"), guid);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
History::UpdatePlace(const VisitData& aPlace)
{
NS_PRECONDITION(!NS_IsMainThread(), "must be called off of the main thread!");
NS_PRECONDITION(aPlace.placeId > 0, "must have a valid place id!");
NS_PRECONDITION(!aPlace.guid.IsVoid(), "must have a guid!");
nsCOMPtr<mozIStorageStatement> stmt = GetStatement(
"UPDATE moz_places "
"SET title = :title, "
"hidden = :hidden, "
"typed = :typed, "
"guid = :guid "
"WHERE id = :page_id "
);
NS_ENSURE_STATE(stmt);
mozStorageStatementScoper scoper(stmt);
nsresult rv;
// Empty strings should clear the title, just like nsNavHistory::SetPageTitle.
if (aPlace.title.IsEmpty()) {
rv = stmt->BindNullByName(NS_LITERAL_CSTRING("title"));
}
else {
rv = stmt->BindStringByName(NS_LITERAL_CSTRING("title"),
StringHead(aPlace.title, TITLE_LENGTH_MAX));
}
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("typed"), aPlace.typed);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt32ByName(NS_LITERAL_CSTRING("hidden"), aPlace.hidden);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindUTF8StringByName(NS_LITERAL_CSTRING("guid"), aPlace.guid);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->BindInt64ByName(NS_LITERAL_CSTRING("page_id"),
aPlace.placeId);
NS_ENSURE_SUCCESS(rv, rv);
rv = stmt->Execute();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
bool
History::FetchPageInfo(VisitData& _place)
{
NS_PRECONDITION(!_place.spec.IsEmpty(), "must have a non-empty spec!");
NS_PRECONDITION(!NS_IsMainThread(), "must be called off of the main thread!");
nsCOMPtr<mozIStorageStatement> stmt = GetStatement(
"SELECT id, title, hidden, typed, guid "
"FROM moz_places "
"WHERE url = :page_url "
);
NS_ENSURE_TRUE(stmt, false);
mozStorageStatementScoper scoper(stmt);
nsresult rv = URIBinder::Bind(stmt, NS_LITERAL_CSTRING("page_url"),
_place.spec);
NS_ENSURE_SUCCESS(rv, false);
bool hasResult;
rv = stmt->ExecuteStep(&hasResult);
NS_ENSURE_SUCCESS(rv, false);
if (!hasResult) {
return false;
}
rv = stmt->GetInt64(0, &_place.placeId);
NS_ENSURE_SUCCESS(rv, false);
nsAutoString title;
rv = stmt->GetString(1, title);
NS_ENSURE_SUCCESS(rv, true);
// If the title we were given was void, that means we did not bother to set
// it to anything. As a result, ignore the fact that we may have changed the
// title (because we don't want to, that would be empty), and set the title
// to what is currently stored in the datbase.
if (_place.title.IsVoid()) {
_place.title = title;
}
// Otherwise, just indicate if the title has changed.
else {
_place.titleChanged = !(_place.title.Equals(title) ||
(_place.title.IsEmpty() && title.IsVoid()));
}
if (_place.hidden) {
// If this transition was hidden, it is possible that others were not.
// Any one visible transition makes this location visible. If database
// has location as visible, reflect that in our data structure.
int32_t hidden;
rv = stmt->GetInt32(2, &hidden);
_place.hidden = !!hidden;
NS_ENSURE_SUCCESS(rv, true);
}
if (!_place.typed) {
// If this transition wasn't typed, others might have been. If database
// has location as typed, reflect that in our data structure.
int32_t typed;
rv = stmt->GetInt32(3, &typed);
_place.typed = !!typed;
NS_ENSURE_SUCCESS(rv, true);
}
if (_place.guid.IsVoid()) {
rv = stmt->GetUTF8String(4, _place.guid);
NS_ENSURE_SUCCESS(rv, true);
}
return true;
}
/* static */ size_t
History::SizeOfEntryExcludingThis(KeyClass* aEntry, nsMallocSizeOfFun aMallocSizeOf, void *)
{
return aEntry->array.SizeOfExcludingThis(aMallocSizeOf);
}
size_t
History::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOfThis)
{
return aMallocSizeOfThis(this) +
mObservers.SizeOfExcludingThis(SizeOfEntryExcludingThis, aMallocSizeOfThis);
}
/* static */
History*
History::GetService()
{
if (gService) {
return gService;
}
nsCOMPtr<IHistory> service(do_GetService(NS_IHISTORY_CONTRACTID));
NS_ABORT_IF_FALSE(service, "Cannot obtain IHistory service!");
NS_ASSERTION(gService, "Our constructor was not run?!");
return gService;
}
/* static */
History*
History::GetSingleton()
{
if (!gService) {
gService = new History();
NS_ENSURE_TRUE(gService, nullptr);
}
NS_ADDREF(gService);
return gService;
}
mozIStorageConnection*
History::GetDBConn()
{
if (!mDB) {
mDB = Database::GetDatabase();
NS_ENSURE_TRUE(mDB, nullptr);
}
return mDB->MainConn();
}
void
History::Shutdown()
{
MOZ_ASSERT(NS_IsMainThread());
// Prevent other threads from scheduling uses of the DB while we mark
// ourselves as shutting down.
MutexAutoLock lockedScope(mShutdownMutex);
MOZ_ASSERT(!mShuttingDown && "Shutdown was called more than once!");
mShuttingDown = true;
if (mReadOnlyDBConn) {
if (mIsVisitedStatement) {
(void)mIsVisitedStatement->Finalize();
}
(void)mReadOnlyDBConn->AsyncClose(nullptr);
}
}
void
History::AppendToRecentlyVisitedURIs(nsIURI* aURI) {
if (mRecentlyVisitedURIs.Length() < RECENTLY_VISITED_URI_SIZE) {
// Append a new element while the array is not full.
mRecentlyVisitedURIs.AppendElement(aURI);
} else {
// Otherwise, replace the oldest member.
mRecentlyVisitedURIsNextIndex %= RECENTLY_VISITED_URI_SIZE;
mRecentlyVisitedURIs.ElementAt(mRecentlyVisitedURIsNextIndex) = aURI;
mRecentlyVisitedURIsNextIndex++;
}
}
inline bool
History::IsRecentlyVisitedURI(nsIURI* aURI) {
bool equals = false;
RecentlyVisitedArray::index_type i;
for (i = 0; i < mRecentlyVisitedURIs.Length() && !equals; ++i) {
aURI->Equals(mRecentlyVisitedURIs.ElementAt(i), &equals);
}
return equals;
}
////////////////////////////////////////////////////////////////////////////////
//// IHistory
NS_IMETHODIMP
History::VisitURI(nsIURI* aURI,
nsIURI* aLastVisitedURI,
uint32_t aFlags)
{
NS_PRECONDITION(aURI, "URI should not be NULL.");
if (mShuttingDown) {
return NS_OK;
}
if (XRE_GetProcessType() == GeckoProcessType_Content) {
URIParams uri;
SerializeURI(aURI, uri);
OptionalURIParams lastVisitedURI;
SerializeURI(aLastVisitedURI, lastVisitedURI);
mozilla::dom::ContentChild* cpc =
mozilla::dom::ContentChild::GetSingleton();
NS_ASSERTION(cpc, "Content Protocol is NULL!");
(void)cpc->SendVisitURI(uri, lastVisitedURI, aFlags);
return NS_OK;
}
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
NS_ENSURE_TRUE(navHistory, NS_ERROR_OUT_OF_MEMORY);
// Silently return if URI is something we shouldn't add to DB.
bool canAdd;
nsresult rv = navHistory->CanAddURI(aURI, &canAdd);
NS_ENSURE_SUCCESS(rv, rv);
if (!canAdd) {
return NS_OK;
}
if (aLastVisitedURI) {
bool same;
rv = aURI->Equals(aLastVisitedURI, &same);
NS_ENSURE_SUCCESS(rv, rv);
if (same && IsRecentlyVisitedURI(aURI)) {
// Do not save refresh visits if we have visited this URI recently.
return NS_OK;
}
}
nsTArray<VisitData> placeArray(1);
NS_ENSURE_TRUE(placeArray.AppendElement(VisitData(aURI, aLastVisitedURI)),
NS_ERROR_OUT_OF_MEMORY);
VisitData& place = placeArray.ElementAt(0);
NS_ENSURE_FALSE(place.spec.IsEmpty(), NS_ERROR_INVALID_ARG);
place.visitTime = PR_Now();
// Assigns a type to the edge in the visit linked list. Each type will be
// considered differently when weighting the frecency of a location.
uint32_t recentFlags = navHistory->GetRecentFlags(aURI);
bool isFollowedLink = recentFlags & nsNavHistory::RECENT_ACTIVATED;
// Embed visits should never be added to the database, and the same is valid
// for redirects across frames.
// For the above reasoning non-toplevel transitions are handled at first.
// if the visit is toplevel or a non-toplevel followed link, then it can be
// handled as usual and stored on disk.
uint32_t transitionType = nsINavHistoryService::TRANSITION_LINK;
if (!(aFlags & IHistory::TOP_LEVEL) && !isFollowedLink) {
// A frame redirected to a new site without user interaction.
transitionType = nsINavHistoryService::TRANSITION_EMBED;
}
else if (aFlags & IHistory::REDIRECT_TEMPORARY) {
transitionType = nsINavHistoryService::TRANSITION_REDIRECT_TEMPORARY;
}
else if (aFlags & IHistory::REDIRECT_PERMANENT) {
transitionType = nsINavHistoryService::TRANSITION_REDIRECT_PERMANENT;
}
else if (recentFlags & nsNavHistory::RECENT_TYPED) {
transitionType = nsINavHistoryService::TRANSITION_TYPED;
}
else if (recentFlags & nsNavHistory::RECENT_BOOKMARKED) {
transitionType = nsINavHistoryService::TRANSITION_BOOKMARK;
}
else if (!(aFlags & IHistory::TOP_LEVEL) && isFollowedLink) {
// User activated a link in a frame.
transitionType = nsINavHistoryService::TRANSITION_FRAMED_LINK;
}
place.SetTransitionType(transitionType);
place.hidden = GetHiddenState(aFlags & IHistory::REDIRECT_SOURCE,
transitionType);
// Error pages should never be autocompleted.
if (aFlags & IHistory::UNRECOVERABLE_ERROR) {
place.frecency = 0;
}
// EMBED visits are session-persistent and should not go through the database.
// They exist only to keep track of isVisited status during the session.
if (place.transitionType == nsINavHistoryService::TRANSITION_EMBED) {
StoreAndNotifyEmbedVisit(place);
}
else {
mozIStorageConnection* dbConn = GetDBConn();
NS_ENSURE_STATE(dbConn);
rv = InsertVisitedURIs::Start(dbConn, placeArray);
NS_ENSURE_SUCCESS(rv, rv);
}
// Finally, notify that we've been visited.
nsCOMPtr<nsIObserverService> obsService =
mozilla::services::GetObserverService();
if (obsService) {
obsService->NotifyObservers(aURI, NS_LINK_VISITED_EVENT_TOPIC, nullptr);
}
return NS_OK;
}
NS_IMETHODIMP
History::RegisterVisitedCallback(nsIURI* aURI,
Link* aLink)
{
NS_ASSERTION(aURI, "Must pass a non-null URI!");
if (XRE_GetProcessType() == GeckoProcessType_Content) {
NS_PRECONDITION(aLink, "Must pass a non-null Link!");
}
// First, ensure that our hash table is setup.
if (!mObservers.IsInitialized()) {
mObservers.Init(VISIT_OBSERVERS_INITIAL_CACHE_SIZE);
}
// Obtain our array of observers for this URI.
#ifdef DEBUG
bool keyAlreadyExists = !!mObservers.GetEntry(aURI);
#endif
KeyClass* key = mObservers.PutEntry(aURI);
NS_ENSURE_TRUE(key, NS_ERROR_OUT_OF_MEMORY);
ObserverArray& observers = key->array;
if (observers.IsEmpty()) {
NS_ASSERTION(!keyAlreadyExists,
"An empty key was kept around in our hashtable!");
// We are the first Link node to ask about this URI, or there are no pending
// Links wanting to know about this URI. Therefore, we should query the
// database now.
nsresult rv = VisitedQuery::Start(aURI);
// In IPC builds, we are passed a NULL Link from
// ContentParent::RecvStartVisitedQuery. Since we won't be adding a NULL
// entry to our list of observers, and the code after this point assumes
// that aLink is non-NULL, we will need to return now.
if (NS_FAILED(rv) || !aLink) {
// Remove our array from the hashtable so we don't keep it around.
mObservers.RemoveEntry(aURI);
return rv;
}
}
// In IPC builds, we are passed a NULL Link from
// ContentParent::RecvStartVisitedQuery. All of our code after this point
// assumes aLink is non-NULL, so we have to return now.
else if (!aLink) {
NS_ASSERTION(XRE_GetProcessType() == GeckoProcessType_Default,
"We should only ever get a null Link in the default process!");
return NS_OK;
}
// Sanity check that Links are not registered more than once for a given URI.
// This will not catch a case where it is registered for two different URIs.
NS_ASSERTION(!observers.Contains(aLink),
"Already tracking this Link object!");
// Start tracking our Link.
if (!observers.AppendElement(aLink)) {
// Curses - unregister and return failure.
(void)UnregisterVisitedCallback(aURI, aLink);
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
NS_IMETHODIMP
History::UnregisterVisitedCallback(nsIURI* aURI,
Link* aLink)
{
NS_ASSERTION(aURI, "Must pass a non-null URI!");
NS_ASSERTION(aLink, "Must pass a non-null Link object!");
// Get the array, and remove the item from it.
KeyClass* key = mObservers.GetEntry(aURI);
if (!key) {
NS_ERROR("Trying to unregister for a URI that wasn't registered!");
return NS_ERROR_UNEXPECTED;
}
ObserverArray& observers = key->array;
if (!observers.RemoveElement(aLink)) {
NS_ERROR("Trying to unregister a node that wasn't registered!");
return NS_ERROR_UNEXPECTED;
}
// If the array is now empty, we should remove it from the hashtable.
if (observers.IsEmpty()) {
mObservers.RemoveEntry(aURI);
}
return NS_OK;
}
NS_IMETHODIMP
History::SetURITitle(nsIURI* aURI, const nsAString& aTitle)
{
NS_PRECONDITION(aURI, "Must pass a non-null URI!");
if (mShuttingDown) {
return NS_OK;
}
if (XRE_GetProcessType() == GeckoProcessType_Content) {
URIParams uri;
SerializeURI(aURI, uri);
mozilla::dom::ContentChild * cpc =
mozilla::dom::ContentChild::GetSingleton();
NS_ASSERTION(cpc, "Content Protocol is NULL!");
(void)cpc->SendSetURITitle(uri, nsString(aTitle));
return NS_OK;
}
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
// At first, it seems like nav history should always be available here, no
// matter what.
//
// nsNavHistory fails to register as a service if there is no profile in
// place (for instance, if user is choosing a profile).
//
// Maybe the correct thing to do is to not register this service if no
// profile has been selected?
//
NS_ENSURE_TRUE(navHistory, NS_ERROR_FAILURE);
bool canAdd;
nsresult rv = navHistory->CanAddURI(aURI, &canAdd);
NS_ENSURE_SUCCESS(rv, rv);
if (!canAdd) {
return NS_OK;
}
// Embed visits don't have a database entry, thus don't set a title on them.
if (navHistory->hasEmbedVisit(aURI)) {
return NS_OK;
}
mozIStorageConnection* dbConn = GetDBConn();
NS_ENSURE_STATE(dbConn);
rv = SetPageTitle::Start(dbConn, aURI, aTitle);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// nsIDownloadHistory
NS_IMETHODIMP
History::AddDownload(nsIURI* aSource, nsIURI* aReferrer,
PRTime aStartTime, nsIURI* aDestination)
{
MOZ_ASSERT(NS_IsMainThread());
NS_ENSURE_ARG(aSource);
if (mShuttingDown) {
return NS_OK;
}
if (XRE_GetProcessType() == GeckoProcessType_Content) {
NS_ERROR("Cannot add downloads to history from content process!");
return NS_ERROR_NOT_AVAILABLE;
}
nsNavHistory* navHistory = nsNavHistory::GetHistoryService();
NS_ENSURE_TRUE(navHistory, NS_ERROR_OUT_OF_MEMORY);
// Silently return if URI is something we shouldn't add to DB.
bool canAdd;
nsresult rv = navHistory->CanAddURI(aSource, &canAdd);
NS_ENSURE_SUCCESS(rv, rv);
if (!canAdd) {
return NS_OK;
}
nsTArray<VisitData> placeArray(1);
NS_ENSURE_TRUE(placeArray.AppendElement(VisitData(aSource, aReferrer)),
NS_ERROR_OUT_OF_MEMORY);
VisitData& place = placeArray.ElementAt(0);
NS_ENSURE_FALSE(place.spec.IsEmpty(), NS_ERROR_INVALID_ARG);
place.visitTime = aStartTime;
place.SetTransitionType(nsINavHistoryService::TRANSITION_DOWNLOAD);
place.hidden = false;
mozIStorageConnection* dbConn = GetDBConn();
NS_ENSURE_STATE(dbConn);
nsCOMPtr<mozIVisitInfoCallback> callback = aDestination
? new SetDownloadAnnotations(aDestination)
: nullptr;
rv = InsertVisitedURIs::Start(dbConn, placeArray, callback);
NS_ENSURE_SUCCESS(rv, rv);
// Finally, notify that we've been visited.
nsCOMPtr<nsIObserverService> obsService =
mozilla::services::GetObserverService();
if (obsService) {
obsService->NotifyObservers(aSource, NS_LINK_VISITED_EVENT_TOPIC, nullptr);
}
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// mozIAsyncHistory
NS_IMETHODIMP
History::UpdatePlaces(const jsval& aPlaceInfos,
mozIVisitInfoCallback* aCallback,
JSContext* aCtx)
{
NS_ENSURE_TRUE(NS_IsMainThread(), NS_ERROR_UNEXPECTED);
NS_ENSURE_TRUE(!JSVAL_IS_PRIMITIVE(aPlaceInfos), NS_ERROR_INVALID_ARG);
uint32_t infosLength = 1;
JSObject* infos;
if (JS_IsArrayObject(aCtx, JSVAL_TO_OBJECT(aPlaceInfos))) {
infos = JSVAL_TO_OBJECT(aPlaceInfos);
(void)JS_GetArrayLength(aCtx, infos, &infosLength);
NS_ENSURE_ARG(infosLength > 0);
}
else {
// Build a temporary array to store this one item so the code below can
// just loop.
infos = JS_NewArrayObject(aCtx, 0, NULL);
NS_ENSURE_TRUE(infos, NS_ERROR_OUT_OF_MEMORY);
JSBool rc = JS_DefineElement(aCtx, infos, 0, aPlaceInfos, NULL, NULL, 0);
NS_ENSURE_TRUE(rc, NS_ERROR_UNEXPECTED);
}
nsTArray<VisitData> visitData;
for (uint32_t i = 0; i < infosLength; i++) {
JSObject* info;
nsresult rv = GetJSObjectFromArray(aCtx, infos, i, &info);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIURI> uri = GetURIFromJSObject(aCtx, info, "uri");
nsCString guid;
{
nsString fatGUID;
GetStringFromJSObject(aCtx, info, "guid", fatGUID);
if (fatGUID.IsVoid()) {
guid.SetIsVoid(true);
}
else {
guid = NS_ConvertUTF16toUTF8(fatGUID);
}
}
// Make sure that any uri we are given can be added to history, and if not,
// skip it (CanAddURI will notify our callback for us).
if (uri && !CanAddURI(uri, guid, aCallback)) {
continue;
}
// We must have at least one of uri or guid.
NS_ENSURE_ARG(uri || !guid.IsVoid());
// If we were given a guid, make sure it is valid.
bool isValidGUID = IsValidGUID(guid);
NS_ENSURE_ARG(guid.IsVoid() || isValidGUID);
nsString title;
GetStringFromJSObject(aCtx, info, "title", title);
JSObject* visits = NULL;
{
jsval visitsVal;
JSBool rc = JS_GetProperty(aCtx, info, "visits", &visitsVal);
NS_ENSURE_TRUE(rc, NS_ERROR_UNEXPECTED);
if (!JSVAL_IS_PRIMITIVE(visitsVal)) {
visits = JSVAL_TO_OBJECT(visitsVal);
NS_ENSURE_ARG(JS_IsArrayObject(aCtx, visits));
}
}
NS_ENSURE_ARG(visits);
uint32_t visitsLength = 0;
if (visits) {
(void)JS_GetArrayLength(aCtx, visits, &visitsLength);
}
NS_ENSURE_ARG(visitsLength > 0);
// Check each visit, and build our array of VisitData objects.
visitData.SetCapacity(visitData.Length() + visitsLength);
for (uint32_t j = 0; j < visitsLength; j++) {
JSObject* visit;
rv = GetJSObjectFromArray(aCtx, visits, j, &visit);
NS_ENSURE_SUCCESS(rv, rv);
VisitData& data = *visitData.AppendElement(VisitData(uri));
data.title = title;
data.guid = guid;
// We must have a date and a transaction type!
rv = GetIntFromJSObject(aCtx, visit, "visitDate", &data.visitTime);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t transitionType = 0;
rv = GetIntFromJSObject(aCtx, visit, "transitionType", &transitionType);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_ARG_RANGE(transitionType,
nsINavHistoryService::TRANSITION_LINK,
nsINavHistoryService::TRANSITION_FRAMED_LINK);
data.SetTransitionType(transitionType);
data.hidden = GetHiddenState(false, transitionType);
// If the visit is an embed visit, we do not actually add it to the
// database.
if (transitionType == nsINavHistoryService::TRANSITION_EMBED) {
StoreAndNotifyEmbedVisit(data, aCallback);
visitData.RemoveElementAt(visitData.Length() - 1);
continue;
}
// The session id is optional.
rv = GetIntFromJSObject(aCtx, visit, "sessionId", &data.sessionId);
if (rv == NS_ERROR_INVALID_ARG) {
data.sessionId = 0;
}
else {
NS_ENSURE_SUCCESS(rv, rv);
}
// The referrer is optional.
nsCOMPtr<nsIURI> referrer = GetURIFromJSObject(aCtx, visit,
"referrerURI");
if (referrer) {
(void)referrer->GetSpec(data.referrerSpec);
}
}
}
mozIStorageConnection* dbConn = GetDBConn();
NS_ENSURE_STATE(dbConn);
// It is possible that all of the visits we were passed were dissallowed by
// CanAddURI, which isn't an error. If we have no visits to add, however,
// we should not call InsertVisitedURIs::Start.
if (visitData.Length()) {
nsresult rv = InsertVisitedURIs::Start(dbConn, visitData, aCallback);
NS_ENSURE_SUCCESS(rv, rv);
}
// Be sure to notify that all of our operations are complete. This
// is dispatched to the background thread first and redirected to the
// main thread from there to make sure that all database notifications
// and all embed or canAddURI notifications have finished.
if (aCallback) {
// NotifyCompletion does not hold a strong reference to the callback,
// so we have to manage it by AddRefing now. NotifyCompletion will
// release it for us once it has dispatched the callback to the main
// thread.
NS_ADDREF(aCallback);
nsCOMPtr<nsIEventTarget> backgroundThread = do_GetInterface(dbConn);
NS_ENSURE_TRUE(backgroundThread, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIRunnable> event = new NotifyCompletion(aCallback);
(void)backgroundThread->Dispatch(event, NS_DISPATCH_NORMAL);
}
return NS_OK;
}
NS_IMETHODIMP
History::IsURIVisited(nsIURI* aURI,
mozIVisitedStatusCallback* aCallback)
{
NS_ENSURE_STATE(NS_IsMainThread());
NS_ENSURE_ARG(aURI);
NS_ENSURE_ARG(aCallback);
nsresult rv = VisitedQuery::Start(aURI, aCallback);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// nsIObserver
NS_IMETHODIMP
History::Observe(nsISupports* aSubject, const char* aTopic,
const PRUnichar* aData)
{
if (strcmp(aTopic, TOPIC_PLACES_SHUTDOWN) == 0) {
Shutdown();
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
if (os) {
(void)os->RemoveObserver(this, TOPIC_PLACES_SHUTDOWN);
}
}
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
//// nsISupports
NS_IMPL_THREADSAFE_ISUPPORTS4(
History
, IHistory
, nsIDownloadHistory
, mozIAsyncHistory
, nsIObserver
)
} // namespace places
} // namespace mozilla
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