mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-25 17:43:44 +00:00
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 -*-
|
|
*
|
|
* 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.
|
|
*/
|
|
#include "nsSelection.h"
|
|
#include "nsISelection.h"
|
|
|
|
NS_LAYOUT nsresult
|
|
NS_NewSelection(nsISelection** aInstancePtrResult)
|
|
{
|
|
static NS_DEFINE_IID(kISelectionIID, NS_ISELECTION_IID);
|
|
nsSelection * sel = new nsSelection();
|
|
return sel->QueryInterface(kISelectionIID, (void**) aInstancePtrResult);
|
|
}
|
|
|
|
nsresult nsSelection::QueryInterface(const nsIID& aIID,
|
|
void** aInstancePtrResult)
|
|
{
|
|
static NS_DEFINE_IID(kISelectionIID, NS_ISELECTION_IID);
|
|
NS_PRECONDITION(nsnull != aInstancePtrResult, "null pointer");
|
|
if (nsnull == aInstancePtrResult) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if (aIID.Equals(kISelectionIID)) {
|
|
nsISelection* tmp = this;
|
|
*aInstancePtrResult = (void*) tmp;
|
|
NS_ADDREF_THIS();
|
|
return NS_OK;
|
|
}
|
|
return !NS_OK;
|
|
}
|
|
|
|
nsSelection::nsSelection() {
|
|
NS_INIT_REFCNT();
|
|
mRange = new nsSelectionRange();
|
|
}
|
|
|
|
nsSelection::~nsSelection() {
|
|
delete mRange;
|
|
}
|
|
|
|
NS_IMPL_ADDREF(nsSelection)
|
|
NS_IMPL_RELEASE(nsSelection)
|
|
|
|
/**
|
|
* Returns whether there is a valid selection
|
|
*/
|
|
PRBool nsSelection::IsValidSelection() {
|
|
return (PRBool)(mRange->GetStartContent() == nsnull ||
|
|
mRange->GetEndContent() == nsnull);
|
|
|
|
}
|
|
|
|
|
|
/**
|
|
* Clears the current selection (invalidates the selection)
|
|
*/
|
|
void nsSelection::ClearSelection() {
|
|
mRange->GetStartPoint()->SetPoint(nsnull, -1, PR_TRUE);
|
|
mRange->GetEndPoint()->SetPoint(nsnull, -1, PR_TRUE);
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
* Copies the data from one nsSelectionPoint in the range to another,
|
|
* it does NOT just assign the pointers
|
|
*/
|
|
void nsSelection::SetRange(nsSelectionRange * aSelectionRange) {
|
|
mRange->SetRange(aSelectionRange->GetStartPoint(),
|
|
aSelectionRange->GetEndPoint());
|
|
}
|
|
|
|
/**
|
|
* Copies the data from one nsSelectionPoint in the range to another,
|
|
* it does NOT just assign the pointers
|
|
*/
|
|
void nsSelection::GetRange(nsSelectionRange * aSelectionRange) {
|
|
mRange->SetRange(aSelectionRange->GetStartPoint(),
|
|
aSelectionRange->GetEndPoint());
|
|
}
|
|
|
|
|
|
/**
|
|
* For debug only, it potentially leaks memory
|
|
*/
|
|
char * nsSelection::ToString() {
|
|
return mRange->ToString();;
|
|
}
|
|
|