зеркало из https://github.com/mozilla/pjs.git
108 строки
3.3 KiB
C++
108 строки
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
|
|
*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#ifndef nsICaret_h__
|
|
#define nsICaret_h__
|
|
|
|
#include "nsISupports.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIPresShell.h"
|
|
|
|
class nsIRenderingContext;
|
|
class nsIFrame;
|
|
class nsIView;
|
|
struct nsRect;
|
|
struct nsPoint;
|
|
|
|
// IID for the nsICaret interface
|
|
#define NS_ICARET_IID \
|
|
{ 0xa6cf90e1, 0x15b3, 0x11d2, {0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} }
|
|
|
|
class nsICaret: public nsISupports
|
|
{
|
|
public:
|
|
static const nsIID& GetIID() { static nsIID iid = NS_ICARET_IID; return iid; }
|
|
|
|
NS_IMETHOD Init(nsIPresShell *inPresShell) = 0;
|
|
|
|
/** SetCaretVisible will set the visibility of the caret
|
|
* @param inMakeVisible PR_TRUE to show the caret, PR_FALSE to hide it
|
|
*/
|
|
NS_IMETHOD SetCaretVisible(PRBool inMakeVisible) = 0;
|
|
|
|
/** SetCaretReadOnly set the appearance of the caret
|
|
* @param inMakeReadonly PR_TRUE to show the caret in a 'read only' state,
|
|
* PR_FALSE to show the caret in normal, editing state
|
|
*/
|
|
NS_IMETHOD SetCaretReadOnly(PRBool inMakeReadonly) = 0;
|
|
|
|
/** GetWindowRelativeCoordinates
|
|
* Get the position of the caret in (top-level) window coordinates.
|
|
* If the selection is collapsed, this returns the caret location
|
|
* and true in outIsCollapsed.
|
|
* If the selection is not collapsed, this returns the location of the focus pos,
|
|
* and false in outIsCollapsed.
|
|
*/
|
|
NS_IMETHOD GetWindowRelativeCoordinates(nsPoint& outCoordinates, PRBool& outIsCollapsed) = 0;
|
|
|
|
/** ClearFrameRefs
|
|
* The caret stores a reference to the frame that the caret was last drawn in.
|
|
* This is called to tell the caret that that frame is going away.
|
|
*/
|
|
NS_IMETHOD ClearFrameRefs(nsIFrame* aFrame) = 0;
|
|
|
|
};
|
|
|
|
extern nsresult NS_NewCaret(nsICaret** aInstancePtrResult);
|
|
|
|
|
|
// handy stack-based class for temporarily disabling the caret
|
|
|
|
class StCaretHider
|
|
{
|
|
public:
|
|
StCaretHider(nsIPresShell* aPresShell)
|
|
: mWasVisible(PR_FALSE), mPresShell(nsnull)
|
|
{
|
|
mPresShell = aPresShell; // addrefs
|
|
if (mPresShell)
|
|
{
|
|
mPresShell->GetCaretEnabled(&mWasVisible);
|
|
if (mWasVisible)
|
|
mPresShell->SetCaretEnabled(PR_FALSE);
|
|
}
|
|
}
|
|
|
|
~StCaretHider()
|
|
{
|
|
if (mPresShell && mWasVisible)
|
|
mPresShell->SetCaretEnabled(PR_TRUE);
|
|
// nsCOMPtr releases mPresShell
|
|
}
|
|
|
|
protected:
|
|
|
|
PRBool mWasVisible;
|
|
nsCOMPtr<nsIPresShell> mPresShell;
|
|
|
|
};
|
|
|
|
|
|
#endif // nsICaret_h__
|
|
|