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104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
/* -*- 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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#include "nsSelection.h"
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#include "nsISelection.h"
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NS_LAYOUT nsresult
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NS_NewSelection(nsISelection** aInstancePtrResult)
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{
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static NS_DEFINE_IID(kISelectionIID, NS_ISELECTION_IID);
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nsSelection * sel = new nsSelection();
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return sel->QueryInterface(kISelectionIID, (void**) aInstancePtrResult);
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}
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nsresult nsSelection::QueryInterface(const nsIID& aIID,
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void** aInstancePtrResult)
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{
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static NS_DEFINE_IID(kISelectionIID, NS_ISELECTION_IID);
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NS_PRECONDITION(nsnull != aInstancePtrResult, "null pointer");
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if (nsnull == aInstancePtrResult) {
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return NS_ERROR_NULL_POINTER;
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}
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if (aIID.Equals(kISelectionIID)) {
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nsISelection* tmp = this;
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*aInstancePtrResult = (void*) tmp;
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NS_ADDREF_THIS();
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return NS_OK;
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}
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return !NS_OK;
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}
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nsSelection::nsSelection() {
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NS_INIT_REFCNT();
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mRange = new nsSelectionRange();
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}
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nsSelection::~nsSelection() {
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delete mRange;
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}
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NS_IMPL_ADDREF(nsSelection)
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NS_IMPL_RELEASE(nsSelection)
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/**
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* Returns whether there is a valid selection
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*/
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PRBool nsSelection::IsValidSelection() {
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return (PRBool)(mRange->GetStartContent() == nsnull ||
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mRange->GetEndContent() == nsnull);
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}
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/**
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* Clears the current selection (invalidates the selection)
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*/
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void nsSelection::ClearSelection() {
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mRange->GetStartPoint()->SetPoint(nsnull, -1, PR_TRUE);
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mRange->GetEndPoint()->SetPoint(nsnull, -1, PR_TRUE);
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}
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/**
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* Copies the data from one nsSelectionPoint in the range to another,
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* it does NOT just assign the pointers
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*/
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void nsSelection::SetRange(nsSelectionRange * aSelectionRange) {
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mRange->SetRange(aSelectionRange->GetStartPoint(),
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aSelectionRange->GetEndPoint());
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}
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/**
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* Copies the data from one nsSelectionPoint in the range to another,
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* it does NOT just assign the pointers
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*/
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void nsSelection::GetRange(nsSelectionRange * aSelectionRange) {
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mRange->SetRange(aSelectionRange->GetStartPoint(),
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aSelectionRange->GetEndPoint());
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}
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/**
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* For debug only, it potentially leaks memory
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*/
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char * nsSelection::ToString() {
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return mRange->ToString();;
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}
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