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103 lines
3.0 KiB
C
103 lines
3.0 KiB
C
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsXULTooltipListener_h__
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#define nsXULTooltipListener_h__
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#include "nsIDOMEventListener.h"
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#include "nsIDOMMouseEvent.h"
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#include "nsIDOMElement.h"
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#include "nsITimer.h"
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#include "nsCOMPtr.h"
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#include "nsString.h"
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#ifdef MOZ_XUL
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#include "nsITreeBoxObject.h"
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#include "nsITreeColumns.h"
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#endif
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#include "nsWeakPtr.h"
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#include "mozilla/Attributes.h"
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class nsIContent;
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class nsXULTooltipListener final : public nsIDOMEventListener
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSIDOMEVENTLISTENER
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void MouseOut(nsIDOMEvent* aEvent);
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void MouseMove(nsIDOMEvent* aEvent);
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nsresult AddTooltipSupport(nsIContent* aNode);
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nsresult RemoveTooltipSupport(nsIContent* aNode);
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static nsXULTooltipListener* GetInstance() {
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if (!mInstance)
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mInstance = new nsXULTooltipListener();
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return mInstance;
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}
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static void ClearTooltipCache() { mInstance = nullptr; }
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protected:
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nsXULTooltipListener();
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~nsXULTooltipListener();
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// pref callback for when the "show tooltips" pref changes
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static bool sShowTooltips;
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static uint32_t sTooltipListenerCount;
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void KillTooltipTimer();
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#ifdef MOZ_XUL
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void CheckTreeBodyMove(nsIDOMMouseEvent* aMouseEvent);
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nsresult GetSourceTreeBoxObject(nsITreeBoxObject** aBoxObject);
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#endif
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nsresult ShowTooltip();
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void LaunchTooltip();
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nsresult HideTooltip();
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nsresult DestroyTooltip();
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// This method tries to find a tooltip for aTarget.
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nsresult FindTooltip(nsIContent* aTarget, nsIContent** aTooltip);
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// This method calls FindTooltip and checks that the tooltip
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// can be really used (i.e. tooltip is not a menu).
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nsresult GetTooltipFor(nsIContent* aTarget, nsIContent** aTooltip);
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static nsXULTooltipListener* mInstance;
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static void ToolbarTipsPrefChanged(const char *aPref, void *aClosure);
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nsWeakPtr mSourceNode;
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nsWeakPtr mTargetNode;
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nsWeakPtr mCurrentTooltip;
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// a timer for showing the tooltip
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nsCOMPtr<nsITimer> mTooltipTimer;
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static void sTooltipCallback (nsITimer* aTimer, void* aListener);
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// screen coordinates of the last mousemove event, stored so that the
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// tooltip can be opened at this location.
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int32_t mMouseScreenX, mMouseScreenY;
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// various constants for tooltips
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enum {
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kTooltipMouseMoveTolerance = 7 // 7 pixel tolerance for mousemove event
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};
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// flag specifying if the tooltip has already been displayed by a MouseMove
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// event. The flag is reset on MouseOut so that the tooltip will display
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// the next time the mouse enters the node (bug #395668).
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bool mTooltipShownOnce;
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#ifdef MOZ_XUL
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// special members for handling trees
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bool mIsSourceTree;
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bool mNeedTitletip;
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int32_t mLastTreeRow;
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nsCOMPtr<nsITreeColumn> mLastTreeCol;
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#endif
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};
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#endif // nsXULTooltipListener
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