/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

/* vim: set ts=8 sts=2 et sw=2 tw=80: */

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsLegendFrame.h"

#include "nsIContent.h"

#include "nsGenericHTMLElement.h"

#include "nsAttrValueInlines.h"

#include "nsHTMLParts.h"

#include "nsGkAtoms.h"

#include "nsStyleConsts.h"

#include "nsCheckboxRadioFrame.h"

nsIFrame*

NS_NewLegendFrame(nsIPresShell* aPresShell, ComputedStyle* aStyle)

{

#ifdef DEBUG

  const nsStyleDisplay* disp = aStyle->StyleDisplay();

  NS_ASSERTION(!disp->IsAbsolutelyPositionedStyle() && !disp->IsFloatingStyle(),

               "Legends should not be positioned and should not float");

#endif

  nsIFrame* f = new (aPresShell) nsLegendFrame(aStyle);

  f->AddStateBits(NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS);

  return f;

}

NS_IMPL_FRAMEARENA_HELPERS(nsLegendFrame)

void

nsLegendFrame::DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData)

{

  nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), false);

  nsBlockFrame::DestroyFrom(aDestructRoot, aPostDestroyData);

}

NS_QUERYFRAME_HEAD(nsLegendFrame)

  NS_QUERYFRAME_ENTRY(nsLegendFrame)

NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)

void

nsLegendFrame::Reflow(nsPresContext*          aPresContext,

                     ReflowOutput&     aDesiredSize,

                     const ReflowInput& aReflowInput,

                     nsReflowStatus&          aStatus)

{

  DO_GLOBAL_REFLOW_COUNT("nsLegendFrame");

  DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);

  MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");

  if (mState & NS_FRAME_FIRST_REFLOW) {

    nsCheckboxRadioFrame::RegUnRegAccessKey(static_cast<nsIFrame*>(this), true);

  }

  return nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowInput, aStatus);

}

int32_t

nsLegendFrame::GetLogicalAlign(WritingMode aCBWM)

{

  int32_t intValue = NS_STYLE_TEXT_ALIGN_START;

  nsGenericHTMLElement* content = nsGenericHTMLElement::FromNode(mContent);

  if (content) {

    const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::align);

    if (attr && attr->Type() == nsAttrValue::eEnum) {

      intValue = attr->GetEnumValue();

      switch (intValue) {

        case NS_STYLE_TEXT_ALIGN_LEFT:

          intValue = aCBWM.IsBidiLTR() ? NS_STYLE_TEXT_ALIGN_START

                                       : NS_STYLE_TEXT_ALIGN_END;

          break;

        case NS_STYLE_TEXT_ALIGN_RIGHT:

          intValue = aCBWM.IsBidiLTR() ? NS_STYLE_TEXT_ALIGN_END

                                       : NS_STYLE_TEXT_ALIGN_START;

          break;

      }

    }

  }

  return intValue;

}

#ifdef DEBUG_FRAME_DUMP

nsresult

nsLegendFrame::GetFrameName(nsAString& aResult) const

{

  return MakeFrameName(NS_LITERAL_STRING("Legend"), aResult);

}

#endif