gecko-dev/layout/forms/nsLegendFrame.cpp

126 строки
3.6 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):
*/
// YY need to pass isMultiple before create called
#include "nsLegendFrame.h"
#include "nsIDOMNode.h"
#include "nsIDOMHTMLLegendElement.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "nsIFrame.h"
#include "nsISupports.h"
#include "nsIAtom.h"
#include "nsIHTMLContent.h"
#include "nsHTMLIIDs.h"
#include "nsHTMLParts.h"
#include "nsHTMLAtoms.h"
#include "nsIStyleContext.h"
#include "nsStyleConsts.h"
#include "nsStyleUtil.h"
#include "nsFont.h"
#include "nsFormControlFrame.h"
static NS_DEFINE_IID(kLegendFrameCID, NS_LEGEND_FRAME_CID);
static NS_DEFINE_IID(kIDOMHTMLLegendElementIID, NS_IDOMHTMLLEGENDELEMENT_IID);
nsresult
NS_NewLegendFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsLegendFrame* it = new (aPresShell) nsLegendFrame;
if (!it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
nsLegendFrame::nsLegendFrame()
: nsAreaFrame()
{
mPresContext = nsnull;
}
nsLegendFrame::~nsLegendFrame()
{
nsFormControlFrame::RegUnRegAccessKey(mPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_FALSE);
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsLegendFrame::QueryInterface(REFNSIID aIID, void** aInstancePtrResult)
{
NS_PRECONDITION(nsnull != aInstancePtrResult, "null pointer");
if (nsnull == aInstancePtrResult) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kLegendFrameCID)) {
*aInstancePtrResult = (void*) ((nsLegendFrame*)this);
return NS_OK;
}
return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtrResult);
}
NS_IMETHODIMP
nsLegendFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsLegendFrame", aReflowState.reason);
if (eReflowReason_Initial == aReflowState.reason) {
mPresContext = aPresContext;
nsFormControlFrame::RegUnRegAccessKey(aPresContext, NS_STATIC_CAST(nsIFrame*, this), PR_TRUE);
}
return nsAreaFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
PRInt32 nsLegendFrame::GetAlign()
{
PRInt32 intValue = NS_STYLE_TEXT_ALIGN_LEFT;
nsIHTMLContent* content = nsnull;
mContent->QueryInterface(kIHTMLContentIID, (void**) &content);
if (nsnull != content) {
nsHTMLValue value;
if (NS_CONTENT_ATTR_HAS_VALUE == (content->GetHTMLAttribute(nsHTMLAtoms::align, value))) {
if (eHTMLUnit_Enumerated == value.GetUnit()) {
intValue = value.GetIntValue();
}
}
NS_RELEASE(content);
}
return intValue;
}
#ifdef NS_DEBUG
NS_IMETHODIMP
nsLegendFrame::GetFrameName(nsString& aResult) const
{
return MakeFrameName("Legend", aResult);
}
#endif