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73 lines
3.0 KiB
C
73 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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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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/*
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* !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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* NOTE!! This is not a general class, but specific to layout and frames.
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* Consumers looking for the general selection interface should look at
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* nsIDOMSelection.
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*/
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#ifndef nsIFrameSelection_h___
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#define nsIFrameSelection_h___
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#include "nsISupports.h"
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#include "nsIFrame.h"
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#include "nsIFocusTracker.h"
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// IID for the nsIFrameSelection interface
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#define NS_IFRAMESELECTION_IID \
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{ 0xf46e4171, 0xdeaa, 0x11d1, \
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{ 0x97, 0xfc, 0x0, 0x60, 0x97, 0x3, 0xc1, 0x4e } }
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//----------------------------------------------------------------------
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// Selection interface
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class nsIFrameSelection : public nsISupports {
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public:
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static const nsIID& IID() { static nsIID iid = NS_IFRAMESELECTION_IID; return iid; }
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/** HandleKeyEvent will accept an event and frame and
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* will return NS_OK if it handles the event or NS_COMFALSE if not.
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* <P>DOES NOT ADDREF<P>
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* @param tracker to ask where the current focus is and to set the new anchor ect.
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* @param aGuiEvent is the event that should be dealt with by aFocusFrame
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* @param aFrame is the frame that MAY handle the event
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*/
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NS_IMETHOD HandleKeyEvent(nsIFocusTracker *aTracker, nsGUIEvent *aGuiEvent, nsIFrame *aFrame) = 0;
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/** TakeFocus will take the focus to the new frame at the new offset and
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* will either extend the selection from the old anchor, or replace the old anchor.
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* the old anchor and focus position may also be used to deselect things
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* @param aTracker we need a focus tracker to get the old focus ect.
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* @param aFrame is the frame that wants the focus
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* @param aOffset is the offset in the aFrame that will get the focus point
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* @param aContentOffset is the offset in the node of the aFrame that is reflected be aOffset
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* @param aContinueSelection is the flag that tells the selection to keep the old anchor point or not.
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*/
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NS_IMETHOD TakeFocus(nsIFocusTracker *aTracker, nsIFrame *aFrame, PRInt32 aOffset, PRInt32 aContentOffset, PRBool aContinueSelection) = 0;
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/** ResetSelection will top down search for frames that need selection
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*/
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NS_IMETHOD ResetSelection(nsIFocusTracker *aTracker, nsIFrame *aStartFrame) = 0;
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};
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#endif /* nsIFrameSelection_h___ */
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