gecko-dev/layout/forms/nsLegendFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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* 1.1 (the "License"); you may not use this file except in compliance with
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*
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* 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.
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* Contributor(s):
*
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* 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
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// 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 "nsGenericHTMLElement.h"
#include "nsHTMLParts.h"
#include "nsGkAtoms.h"
#include "nsStyleConsts.h"
#include "nsFont.h"
#include "nsFormControlFrame.h"
static NS_DEFINE_IID(kLegendFrameCID, NS_LEGEND_FRAME_CID);
nsIFrame*
NS_NewLegendFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
nsIFrame* f = new (aPresShell) nsLegendFrame(aContext);
if (f) {
f->AddStateBits(NS_BLOCK_SPACE_MGR | NS_BLOCK_MARGIN_ROOT);
}
return f;
}
nsIAtom*
nsLegendFrame::GetType() const
{
return nsGkAtoms::legendFrame;
}
void
nsLegendFrame::Destroy()
{
nsFormControlFrame::RegUnRegAccessKey(NS_STATIC_CAST(nsIFrame*, this), PR_FALSE);
nsAreaFrame::Destroy();
}
// Frames are not refcounted, no need to AddRef
NS_IMETHODIMP
nsLegendFrame::QueryInterface(REFNSIID aIID, void** aInstancePtrResult)
{
NS_PRECONDITION(aInstancePtrResult, "null pointer");
if (NS_UNLIKELY(!aInstancePtrResult)) {
return NS_ERROR_NULL_POINTER;
}
if (aIID.Equals(kLegendFrameCID)) {
*aInstancePtrResult = this;
return NS_OK;
}
return nsAreaFrame::QueryInterface(aIID, aInstancePtrResult);
}
NS_IMETHODIMP
nsLegendFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsLegendFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
if (mState & NS_FRAME_FIRST_REFLOW) {
nsFormControlFrame::RegUnRegAccessKey(NS_STATIC_CAST(nsIFrame*, this), PR_TRUE);
}
return nsAreaFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
}
// REVIEW: We don't need to override BuildDisplayList, nsAreaFrame will honour
// our visibility setting
PRInt32 nsLegendFrame::GetAlign()
{
PRInt32 intValue = NS_STYLE_TEXT_ALIGN_LEFT;
#ifdef IBMBIDI
if (mParent && NS_STYLE_DIRECTION_RTL == mParent->GetStyleVisibility()->mDirection) {
intValue = NS_STYLE_TEXT_ALIGN_RIGHT;
}
#endif // IBMBIDI
nsGenericHTMLElement *content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::align);
if (attr && attr->Type() == nsAttrValue::eEnum) {
intValue = attr->GetEnumValue();
}
}
return intValue;
}
#ifdef NS_DEBUG
NS_IMETHODIMP
nsLegendFrame::GetFrameName(nsAString& aResult) const
{
return MakeFrameName(NS_LITERAL_STRING("Legend"), aResult);
}
#endif