Add m-esr52 at 52.6.0

1 files changed, 294 insertions, 0 deletions

diff --git a/dom/base/PartialSHistory.cpp b/dom/base/PartialSHistory.cpp
new file mode 100644
index 000000000..2da5ca536
--- /dev/null
+++ b/dom/base/PartialSHistory.cpp
@@ -0,0 +1,294 @@
+/* -*- 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 "PartialSHistory.h"
+
+#include "nsIWebNavigation.h"
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_CYCLE_COLLECTION(PartialSHistory, mOwnerFrameLoader)
+NS_IMPL_CYCLE_COLLECTING_ADDREF(PartialSHistory)
+NS_IMPL_CYCLE_COLLECTING_RELEASE(PartialSHistory)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PartialSHistory)
+  NS_INTERFACE_MAP_ENTRY(nsIPartialSHistory)
+  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIPartialSHistory)
+  NS_INTERFACE_MAP_ENTRY(nsISHistoryListener)
+  NS_INTERFACE_MAP_ENTRY(nsIPartialSHistoryListener)
+  NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+NS_INTERFACE_MAP_END
+
+PartialSHistory::PartialSHistory(nsIFrameLoader* aOwnerFrameLoader)
+  : mCount(0),
+    mGlobalIndexOffset(0),
+    mOwnerFrameLoader(aOwnerFrameLoader)
+{
+  MOZ_ASSERT(aOwnerFrameLoader);
+}
+
+already_AddRefed<nsISHistory>
+PartialSHistory::GetSessionHistory()
+{
+  if (!mOwnerFrameLoader) {
+    // Cycle collected?
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIDocShell> docShell;
+  mOwnerFrameLoader->GetDocShell(getter_AddRefs(docShell));
+  if (!docShell) {
+    return nullptr;
+  }
+
+  nsCOMPtr<nsIWebNavigation> webNav(do_QueryInterface(docShell));
+  nsCOMPtr<nsISHistory> shistory;
+  webNav->GetSessionHistory(getter_AddRefs(shistory));
+  return shistory.forget();
+}
+
+already_AddRefed<TabParent>
+PartialSHistory::GetTabParent()
+{
+  if (!mOwnerFrameLoader) {
+    // Cycle collected?
+    return nullptr;
+  }
+
+  nsCOMPtr<nsITabParent> tabParent;
+  mOwnerFrameLoader->GetTabParent(getter_AddRefs(tabParent));
+  return RefPtr<TabParent>(static_cast<TabParent*>(tabParent.get())).forget();
+}
+
+NS_IMETHODIMP
+PartialSHistory::GetCount(uint32_t* aResult)
+{
+  if (!aResult) {
+    return NS_ERROR_INVALID_POINTER;
+  }
+
+  // If we have direct reference to nsISHistory, simply pass through.
+  nsCOMPtr<nsISHistory> shistory(GetSessionHistory());
+  if (shistory) {
+    int32_t count;
+    nsresult rv = shistory->GetCount(&count);
+    if (NS_FAILED(rv) || count < 0) {
+      *aResult = 0;
+      return NS_ERROR_FAILURE;
+    }
+    *aResult = count;
+    return NS_OK;
+  }
+
+  // Otherwise use the cached value.
+  *aResult = mCount;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PartialSHistory::GetGlobalIndexOffset(uint32_t* aResult)
+{
+  if (!aResult) {
+    return NS_ERROR_INVALID_POINTER;
+  }
+
+  // If we have direct reference to nsISHistory, simply pass through.
+  nsCOMPtr<nsISHistory> shistory(GetSessionHistory());
+  if (shistory) {
+    int32_t offset;
+    nsresult rv = shistory->GetGlobalIndexOffset(&offset);
+    if (NS_FAILED(rv) || offset < 0) {
+      *aResult = 0;
+      return NS_ERROR_FAILURE;
+    }
+    *aResult = offset;
+    return NS_OK;
+  }
+
+  // Otherwise use the cached value.
+  *aResult = mGlobalIndexOffset;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PartialSHistory::GetOwnerFrameLoader(nsIFrameLoader** aResult)
+{
+  nsCOMPtr<nsIFrameLoader> loader(mOwnerFrameLoader);
+  loader.forget(aResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnAttachGroupedSessionHistory(uint32_t aOffset)
+{
+  mGlobalIndexOffset = aOffset;
+
+  // If we have direct reference to nsISHistory, simply pass through.
+  nsCOMPtr<nsISHistory> shistory(GetSessionHistory());
+  if (shistory) {
+    // nsISHistory uses int32_t
+    if (aOffset > INT32_MAX) {
+      return NS_ERROR_FAILURE;
+    }
+    return shistory->OnAttachGroupedSessionHistory(aOffset);
+  }
+
+  // Otherwise notify through TabParent.
+  RefPtr<TabParent> tabParent(GetTabParent());
+  if (!tabParent) {
+    // We have neither shistory nor tabParent?
+    NS_WARNING("Unable to get shitory nor tabParent!");
+    return NS_ERROR_UNEXPECTED;
+  }
+  Unused << tabParent->SendNotifyAttachGroupedSessionHistory(aOffset);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnSessionHistoryChange(uint32_t aCount)
+{
+  mCount = aCount;
+  return OnLengthChange(aCount);
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnActive(uint32_t aGlobalLength, uint32_t aTargetLocalIndex)
+{
+  // In-process case.
+  nsCOMPtr<nsISHistory> shistory(GetSessionHistory());
+  if (shistory) {
+    // nsISHistory uses int32_t
+    if (aGlobalLength > INT32_MAX || aTargetLocalIndex > INT32_MAX) {
+      return NS_ERROR_FAILURE;
+    }
+    return shistory->OnPartialSessionHistoryActive(aGlobalLength,
+                                                   aTargetLocalIndex);
+  }
+
+  // Cross-process case.
+  RefPtr<TabParent> tabParent(GetTabParent());
+  if (!tabParent) {
+    // We have neither shistory nor tabParent?
+    NS_WARNING("Unable to get shitory nor tabParent!");
+    return NS_ERROR_UNEXPECTED;
+  }
+  Unused << tabParent->SendNotifyPartialSessionHistoryActive(aGlobalLength,
+                                                             aTargetLocalIndex);
+
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnDeactive()
+{
+  // In-process case.
+  nsCOMPtr<nsISHistory> shistory(GetSessionHistory());
+  if (shistory) {
+    if (NS_FAILED(shistory->OnPartialSessionHistoryDeactive())) {
+      return NS_ERROR_FAILURE;
+    }
+    return NS_OK;
+  }
+
+  // Cross-process case.
+  RefPtr<TabParent> tabParent(GetTabParent());
+  if (!tabParent) {
+    // We have neither shistory nor tabParent?
+    NS_WARNING("Unable to get shitory nor tabParent!");
+    return NS_ERROR_UNEXPECTED;
+  }
+  Unused << tabParent->SendNotifyPartialSessionHistoryDeactive();
+  return NS_OK;
+}
+
+/*******************************************************************************
+ * nsIPartialSHistoryListener
+ ******************************************************************************/
+
+NS_IMETHODIMP
+PartialSHistory::OnRequestCrossBrowserNavigation(uint32_t aIndex)
+{
+  if (!mOwnerFrameLoader) {
+    // Cycle collected?
+    return NS_ERROR_UNEXPECTED;
+  }
+  return mOwnerFrameLoader->RequestGroupedHistoryNavigation(aIndex);
+}
+
+/*******************************************************************************
+ * nsISHistoryListener
+ ******************************************************************************/
+
+NS_IMETHODIMP
+PartialSHistory::OnLengthChange(int32_t aCount)
+{
+  if (!mOwnerFrameLoader) {
+    // Cycle collected?
+    return NS_ERROR_UNEXPECTED;
+  }
+
+  if (aCount < 0) {
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCOMPtr<nsIGroupedSHistory> groupedHistory;
+  mOwnerFrameLoader->GetGroupedSessionHistory(getter_AddRefs(groupedHistory));
+  if (!groupedHistory) {
+    // Maybe we're not the active partial history, but in this case we shouldn't
+    // receive any update from session history object either.
+    return NS_ERROR_FAILURE;
+  }
+
+  groupedHistory->OnPartialSessionHistoryChange(this);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnHistoryNewEntry(nsIURI *aNewURI, int32_t aOldIndex)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnHistoryGoBack(nsIURI *aBackURI, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnHistoryGoForward(nsIURI *aForwardURI, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnHistoryReload(nsIURI *aReloadURI, uint32_t aReloadFlags, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnHistoryGotoIndex(int32_t aIndex, nsIURI *aGotoURI, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnHistoryPurge(int32_t aNumEntries, bool *_retval)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+PartialSHistory::OnHistoryReplaceEntry(int32_t aIndex)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+} // namespace dom
+} // namespace mozilla