gecko-dev/layout/base/nsLayoutHistoryState.cpp

109 lines
2.5 KiB
C++
Raw Normal View History

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2012-05-21 11:12:37 +00:00
/* 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/. */
/*
* container for information saved in session history when the document
* is not
*/
#include "nsILayoutHistoryState.h"
#include "nsWeakReference.h"
#include "nsClassHashtable.h"
#include "nsPresState.h"
#include "mozilla/Attributes.h"
class nsLayoutHistoryState final : public nsILayoutHistoryState,
public nsSupportsWeakReference
{
public:
nsLayoutHistoryState()
: mScrollPositionOnly(false)
{
}
NS_DECL_ISUPPORTS
// nsILayoutHistoryState
virtual void
AddState(const nsCString& aKey, nsPresState* aState) override;
virtual nsPresState*
GetState(const nsCString& aKey) override;
virtual void
RemoveState(const nsCString& aKey) override;
virtual bool
HasStates() const override;
virtual void
SetScrollPositionOnly(const bool aFlag) override;
virtual void
ResetScrollState() override;
private:
~nsLayoutHistoryState() {}
bool mScrollPositionOnly;
nsClassHashtable<nsCStringHashKey,nsPresState> mStates;
};
1999-09-03 22:10:57 +00:00
already_AddRefed<nsILayoutHistoryState>
NS_NewLayoutHistoryState()
{
Bug 1207245 - part 6 - rename nsRefPtr<T> to RefPtr<T>; r=ehsan; a=Tomcat The bulk of this commit was generated with a script, executed at the top level of a typical source code checkout. The only non-machine-generated part was modifying MFBT's moz.build to reflect the new naming. CLOSED TREE makes big refactorings like this a piece of cake. # The main substitution. find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \ xargs perl -p -i -e ' s/nsRefPtr\.h/RefPtr\.h/g; # handle includes s/nsRefPtr ?</RefPtr</g; # handle declarations and variables ' # Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h. perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h # Handle nsRefPtr.h itself, a couple places that define constructors # from nsRefPtr, and code generators specially. We do this here, rather # than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename # things like nsRefPtrHashtable. perl -p -i -e 's/nsRefPtr/RefPtr/g' \ mfbt/nsRefPtr.h \ xpcom/glue/nsCOMPtr.h \ xpcom/base/OwningNonNull.h \ ipc/ipdl/ipdl/lower.py \ ipc/ipdl/ipdl/builtin.py \ dom/bindings/Codegen.py \ python/lldbutils/lldbutils/utils.py # In our indiscriminate substitution above, we renamed # nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up. find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \ xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g' if [ -d .git ]; then git mv mfbt/nsRefPtr.h mfbt/RefPtr.h else hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h fi --HG-- rename : mfbt/nsRefPtr.h => mfbt/RefPtr.h
2015-10-18 05:24:48 +00:00
RefPtr<nsLayoutHistoryState> state = new nsLayoutHistoryState();
return state.forget();
}
NS_IMPL_ISUPPORTS(nsLayoutHistoryState,
nsILayoutHistoryState,
nsISupportsWeakReference)
void
nsLayoutHistoryState::AddState(const nsCString& aStateKey, nsPresState* aState)
{
mStates.Put(aStateKey, aState);
}
nsPresState*
nsLayoutHistoryState::GetState(const nsCString& aKey)
{
nsPresState* state = nullptr;
bool entryExists = mStates.Get(aKey, &state);
if (entryExists && mScrollPositionOnly) {
// Ensure any state that shouldn't be restored is removed
state->ClearNonScrollState();
}
return state;
}
void
nsLayoutHistoryState::RemoveState(const nsCString& aKey)
{
mStates.Remove(aKey);
}
bool
nsLayoutHistoryState::HasStates() const
{
return mStates.Count() != 0;
}
void
nsLayoutHistoryState::SetScrollPositionOnly(const bool aFlag)
{
mScrollPositionOnly = aFlag;
}
void
nsLayoutHistoryState::ResetScrollState()
{
for (auto iter = mStates.Iter(); !iter.Done(); iter.Next()) {
nsPresState* state = iter.UserData();
if (state) {
state->SetScrollState(nsPoint(0, 0));
}
}
}