/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* 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 "GroupedSHistory.h" #include "TabParent.h" #include "PartialSHistory.h" namespace mozilla { namespace dom { NS_IMPL_CYCLE_COLLECTION(GroupedSHistory, mPartialHistories) NS_IMPL_CYCLE_COLLECTING_ADDREF(GroupedSHistory) NS_IMPL_CYCLE_COLLECTING_RELEASE(GroupedSHistory) NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(GroupedSHistory) NS_INTERFACE_MAP_ENTRY(nsIGroupedSHistory) NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIGroupedSHistory) NS_INTERFACE_MAP_END GroupedSHistory::GroupedSHistory() : mCount(0), mIndexOfActivePartialHistory(-1) { } NS_IMETHODIMP GroupedSHistory::GetCount(uint32_t* aResult) { MOZ_ASSERT(aResult); *aResult = mCount; return NS_OK; } NS_IMETHODIMP GroupedSHistory::AppendPartialSessionHistory(nsIPartialSHistory* aPartialHistory) { if (!aPartialHistory) { return NS_ERROR_INVALID_POINTER; } nsCOMPtr<nsIPartialSHistory> partialHistory(aPartialHistory); if (!partialHistory || mPartialHistories.Contains(partialHistory)) { return NS_ERROR_FAILURE; } // Remove all items after active one and deactive it, unless it's the first // call and no active partial history has been set yet. if (mIndexOfActivePartialHistory >= 0) { PurgePartialHistories(mIndexOfActivePartialHistory); nsCOMPtr<nsIPartialSHistory> prevPartialHistory = mPartialHistories[mIndexOfActivePartialHistory]; if (NS_WARN_IF(!prevPartialHistory)) { // Cycle collected? return NS_ERROR_UNEXPECTED; } prevPartialHistory->OnDeactive(); } // Attach the partial history. uint32_t offset = mCount; mCount += partialHistory->GetCount(); mPartialHistories.AppendElement(partialHistory); partialHistory->OnAttachGroupedSessionHistory(offset); mIndexOfActivePartialHistory = mPartialHistories.Count() - 1; return NS_OK; } NS_IMETHODIMP GroupedSHistory::OnPartialSessionHistoryChange( nsIPartialSHistory* aPartialSessionHistory) { if (!aPartialSessionHistory) { return NS_ERROR_INVALID_POINTER; } nsCOMPtr<nsIPartialSHistory> partialHistory(aPartialSessionHistory); int32_t index = mPartialHistories.IndexOf(partialHistory); if (NS_WARN_IF(index != mIndexOfActivePartialHistory) || NS_WARN_IF(index < 0)) { // Non-active or not attached partialHistory return NS_ERROR_UNEXPECTED; } PurgePartialHistories(index); // Update global count. uint32_t count = partialHistory->GetCount(); uint32_t offset = partialHistory->GetGlobalIndexOffset(); mCount = count + offset; return NS_OK; } NS_IMETHODIMP GroupedSHistory::GotoIndex(uint32_t aGlobalIndex, nsIFrameLoader** aTargetLoaderToSwap) { nsCOMPtr<nsIPartialSHistory> currentPartialHistory = mPartialHistories[mIndexOfActivePartialHistory]; if (!currentPartialHistory) { // Cycle collected? return NS_ERROR_UNEXPECTED; } for (uint32_t i = 0; i < mPartialHistories.Length(); i++) { nsCOMPtr<nsIPartialSHistory> partialHistory = mPartialHistories[i]; if (NS_WARN_IF(!partialHistory)) { // Cycle collected? return NS_ERROR_UNEXPECTED; } // Examine index range. uint32_t offset = partialHistory->GetGlobalIndexOffset(); uint32_t count = partialHistory->GetCount(); if (offset <= aGlobalIndex && (offset + count) > aGlobalIndex) { uint32_t targetIndex = aGlobalIndex - offset; partialHistory->GetOwnerFrameLoader(aTargetLoaderToSwap); if ((size_t)mIndexOfActivePartialHistory == i) { return NS_OK; } mIndexOfActivePartialHistory = i; if (NS_FAILED(currentPartialHistory->OnDeactive()) || NS_FAILED(partialHistory->OnActive(mCount, targetIndex))) { return NS_ERROR_FAILURE; } return NS_OK; } } // Index not found. NS_WARNING("Out of index request!"); return NS_ERROR_FAILURE; } void GroupedSHistory::PurgePartialHistories(uint32_t aLastPartialIndexToKeep) { uint32_t lastIndex = mPartialHistories.Length() - 1; if (aLastPartialIndexToKeep >= lastIndex) { // Nothing to remove. return; } // Close tabs. for (uint32_t i = lastIndex; i > aLastPartialIndexToKeep; i--) { nsCOMPtr<nsIPartialSHistory> partialHistory = mPartialHistories[i]; if (!partialHistory) { // Cycle collected? return; } nsCOMPtr<nsIFrameLoader> loader; partialHistory->GetOwnerFrameLoader(getter_AddRefs(loader)); loader->RequestFrameLoaderClose(); } // Remove references. mPartialHistories.RemoveElementsAt(aLastPartialIndexToKeep + 1, lastIndex - aLastPartialIndexToKeep); } /* static */ bool GroupedSHistory::GroupedHistoryEnabled() { return Preferences::GetBool("browser.groupedhistory.enabled", false); } } // namespace dom } // namespace mozilla