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- /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #ifndef nsICaret_h__
- #define nsICaret_h__
-
- #include "nsISupports.h"
- #include "nsCOMPtr.h"
- #include "nsCoord.h"
-
- struct nsRect;
- struct nsPoint;
-
- class nsIRenderingContext;
- class nsIFrame;
- class nsIView;
- class nsIPresShell;
- class nsISelection;
- class nsIDOMNode;
-
- // IID for the nsICaret interface
- // c2ba7b60-ccbf-4f2b-8bf7-07493bbf3377
- #define NS_ICARET_IID \
- { 0xc2ba7b60, 0xccbf, 0x4f2b, \
- { 0x8b, 0xf7, 0x07, 0x49, 0x3b, 0xbf, 0x33, 0x77 } }
-
- class nsICaret: public nsISupports
- {
- public:
- NS_DEFINE_STATIC_IID_ACCESSOR(NS_ICARET_IID)
-
- enum EViewCoordinates {
- eTopLevelWindowCoordinates,
- eRenderingViewCoordinates,
- eClosestViewCoordinates,
- eIMECoordinates
- };
-
- NS_IMETHOD Init(nsIPresShell *inPresShell) = 0;
- NS_IMETHOD Terminate() = 0;
-
- NS_IMETHOD GetCaretDOMSelection(nsISelection **aDOMSel) = 0;
- NS_IMETHOD SetCaretDOMSelection(nsISelection *aDOMSel) = 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;
-
- /** GetCaretVisible will get the visibility of the caret
- * @param inMakeVisible PR_TRUE it is shown, PR_FALSE it is hidden
- */
- NS_IMETHOD GetCaretVisible(PRBool *outMakeVisible) = 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;
-
- /** GetCaretCoordinates
- * Get the position of the caret in coordinates relative to the typed specified (aRelativeToType).
- * 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 GetCaretCoordinates(EViewCoordinates aRelativeToType, nsISelection *aDOMSel, nsRect *outCoordinates, PRBool *outIsCollapsed, nsIView **outView) = 0;
-
- /** Erase Caret
- * this will erase the caret if its drawn and reset drawn status
- */
- NS_IMETHOD EraseCaret() = 0;
-
- NS_IMETHOD SetVisibilityDuringSelection(PRBool aVisibilityDuringSelection) = 0;
-
- /** DrawAtPosition
- *
- * Draw the caret explicitly, at the specified node and offset.
- * To avoid drawing glitches, you should call EraseCaret()
- * after each call to DrawAtPosition().
- *
- **/
- NS_IMETHOD DrawAtPosition(nsIDOMNode* aNode, PRInt32 aOffset) = 0;
-
- };
-
- nsresult
- NS_NewCaret(nsICaret** aInstancePtrResult);
-
-
- // handy stack-based class for temporarily disabling the caret
-
- class StCaretHider
- {
- public:
- StCaretHider(nsICaret* aSelCon)
- : mWasVisible(PR_FALSE), mCaret(aSelCon)
- {
- if (mCaret)
- {
- mCaret->GetCaretVisible(&mWasVisible);
- if (mWasVisible)
- mCaret->SetCaretVisible(PR_FALSE);
- }
- }
-
- ~StCaretHider()
- {
- if (mCaret && mWasVisible)
- mCaret->SetCaretVisible(PR_TRUE);
- // nsCOMPtr releases mPresShell
- }
-
- protected:
-
- PRBool mWasVisible;
- nsCOMPtr<nsICaret> mCaret;
- };
-
-
- #endif // nsICaret_h__
-
-