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/* -*- 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/. */
#ifndef nsXULTooltipListener_h__
#define nsXULTooltipListener_h__
#include "nsIDOMEventListener.h"
#include "nsITimer.h"
#include "nsCOMPtr.h"
#include "nsString.h"
#ifdef MOZ_XUL
# include "XULTreeElement.h"
#endif
#include "nsIWeakReferenceUtils.h"
#include "mozilla/Attributes.h"
class nsIContent;
class nsTreeColumn;
namespace mozilla {
namespace dom {
class Event;
class MouseEvent;
} // namespace dom
} // namespace mozilla
class nsXULTooltipListener final : public nsIDOMEventListener {
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMEVENTLISTENER
void MouseOut(mozilla::dom::Event* aEvent);
void MouseMove(mozilla::dom::Event* aEvent);
void AddTooltipSupport(nsIContent* aNode);
void RemoveTooltipSupport(nsIContent* aNode);
static nsXULTooltipListener* GetInstance() {
if (!sInstance) sInstance = new nsXULTooltipListener();
return sInstance;
}
protected:
nsXULTooltipListener();
~nsXULTooltipListener();
// pref callback for when the "show tooltips" pref changes
static bool sShowTooltips;
void KillTooltipTimer();
#ifdef MOZ_XUL
void CheckTreeBodyMove(mozilla::dom::MouseEvent* aMouseEvent);
mozilla::dom::XULTreeElement* GetSourceTree();
#endif
nsresult ShowTooltip();
void LaunchTooltip();
nsresult HideTooltip();
nsresult DestroyTooltip();
// This method tries to find a tooltip for aTarget.
nsresult FindTooltip(nsIContent* aTarget, nsIContent** aTooltip);
// This method calls FindTooltip and checks that the tooltip
// can be really used (i.e. tooltip is not a menu).
nsresult GetTooltipFor(nsIContent* aTarget, nsIContent** aTooltip);
static nsXULTooltipListener* sInstance;
static void ToolbarTipsPrefChanged(const char* aPref, void* aClosure);
nsWeakPtr mSourceNode;
nsWeakPtr mTargetNode;
nsWeakPtr mCurrentTooltip;
// a timer for showing the tooltip
nsCOMPtr<nsITimer> mTooltipTimer;
static void sTooltipCallback(nsITimer* aTimer, void* aListener);
// screen coordinates of the last mousemove event, stored so that the
// tooltip can be opened at this location.
int32_t mMouseScreenX, mMouseScreenY;
// various constants for tooltips
enum {
kTooltipMouseMoveTolerance = 7 // 7 pixel tolerance for mousemove event
};
// flag specifying if the tooltip has already been displayed by a MouseMove
// event. The flag is reset on MouseOut so that the tooltip will display
// the next time the mouse enters the node (bug #395668).
bool mTooltipShownOnce;
#ifdef MOZ_XUL
// special members for handling trees
bool mIsSourceTree;
bool mNeedTitletip;
int32_t mLastTreeRow;
RefPtr<nsTreeColumn> mLastTreeCol;
#endif
};
#endif // nsXULTooltipListener
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