зеркало из https://github.com/mozilla/pjs.git
108 строки
3.0 KiB
C++
108 строки
3.0 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 1.1 (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/NPL/
|
|
*
|
|
* 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 Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All
|
|
* Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Pierre Phaneuf <pp@ludusdesign.com>
|
|
*/
|
|
#include "nsSelectsAreaFrame.h"
|
|
#include "nsCOMPtr.h"
|
|
#include "nsIDOMHTMLOptionElement.h"
|
|
#include "nsIContent.h"
|
|
|
|
nsresult
|
|
NS_NewSelectsAreaFrame(nsIPresShell* aShell, nsIFrame** aNewFrame, PRUint32 aFlags)
|
|
{
|
|
NS_PRECONDITION(aNewFrame, "null OUT ptr");
|
|
if (nsnull == aNewFrame) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
nsSelectsAreaFrame* it = new (aShell) nsSelectsAreaFrame;
|
|
if (nsnull == it) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
it->SetFlags(aFlags);
|
|
*aNewFrame = it;
|
|
return NS_OK;
|
|
}
|
|
|
|
/*NS_IMETHODIMP
|
|
nsSelectsAreaFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr)
|
|
{
|
|
if (NULL == aInstancePtr) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
if (aIID.Equals(kAreaFrameIID)) {
|
|
nsIAreaFrame* tmp = (nsIAreaFrame*)this;
|
|
*aInstancePtr = (void*)tmp;
|
|
return NS_OK;
|
|
}
|
|
return nsAreaFrame::QueryInterface(aIID, aInstancePtr);
|
|
}
|
|
*/
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsSelectsAreaFrame::IsOptionElement(nsIContent* aContent)
|
|
{
|
|
PRBool result = PR_FALSE;
|
|
|
|
nsCOMPtr<nsIDOMHTMLOptionElement> optElem;
|
|
if (NS_SUCCEEDED(aContent->QueryInterface(NS_GET_IID(nsIDOMHTMLOptionElement),(void**) getter_AddRefs(optElem)))) {
|
|
if (optElem != nsnull) {
|
|
result = PR_TRUE;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
PRBool
|
|
nsSelectsAreaFrame::IsOptionElementFrame(nsIFrame *aFrame)
|
|
{
|
|
nsIContent *content = nsnull;
|
|
aFrame->GetContent(&content);
|
|
PRBool result = PR_FALSE;
|
|
if (nsnull != content) {
|
|
result = IsOptionElement(content);
|
|
NS_RELEASE(content);
|
|
}
|
|
return(result);
|
|
}
|
|
|
|
//---------------------------------------------------------
|
|
NS_IMETHODIMP
|
|
nsSelectsAreaFrame::GetFrameForPoint(nsIPresContext* aPresContext,
|
|
const nsPoint& aPoint,
|
|
nsIFrame** aFrame)
|
|
{
|
|
nsAreaFrame::GetFrameForPoint(aPresContext, aPoint, aFrame);
|
|
|
|
nsIFrame* selectedFrame = *aFrame;
|
|
|
|
while ((nsnull != selectedFrame) && (PR_FALSE == IsOptionElementFrame(selectedFrame))) {
|
|
selectedFrame->GetParent(&selectedFrame);
|
|
}
|
|
if (nsnull != selectedFrame) {
|
|
*aFrame = selectedFrame;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|