/* -*- 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/. */

//

// Eric Vaughan

// Netscape Communications

//

// See documentation in associated header file

//

#include "nsGridLayout2.h"

#include "nsGridRowGroupLayout.h"

#include "nsGridRow.h"

#include "nsBox.h"

#include "nsIScrollableFrame.h"

#include "nsSprocketLayout.h"

#include "mozilla/ReflowInput.h"

nsresult

NS_NewGridLayout2( nsIPresShell* aPresShell, nsBoxLayout** aNewLayout)

{

  *aNewLayout = new nsGridLayout2(aPresShell);

  NS_IF_ADDREF(*aNewLayout);

  return NS_OK;

}

nsGridLayout2::nsGridLayout2(nsIPresShell* aPresShell):nsStackLayout()

{

}

nsGridLayout2::~nsGridLayout2()

{

}

// static

void

nsGridLayout2::AddOffset(nsIFrame* aChild, nsSize& aSize)

{

  nsMargin offset;

  GetOffset(aChild, offset);

  aSize.width += offset.left;

  aSize.height += offset.top;

}

NS_IMETHODIMP

nsGridLayout2::XULLayout(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)

{

  // XXX This should be set a better way!

  mGrid.SetBox(aBox);

  NS_ASSERTION(aBox->GetXULLayoutManager() == this, "setting incorrect box");

  nsresult rv = nsStackLayout::XULLayout(aBox, aBoxLayoutState);

#ifdef DEBUG_grid

  mGrid.PrintCellMap();

#endif

  return rv;

}

void

nsGridLayout2::IntrinsicISizesDirty(nsIFrame* aBox, nsBoxLayoutState& aBoxLayoutState)

{

  nsStackLayout::IntrinsicISizesDirty(aBox, aBoxLayoutState);

  // XXXldb We really don't need to do all the work that NeedsRebuild

  // does; we just need to mark intrinsic widths dirty on the

  // (row/column)(s/-groups).

  mGrid.NeedsRebuild(aBoxLayoutState);

}

nsGrid*

nsGridLayout2::GetGrid(nsIFrame* aBox, int32_t* aIndex, nsGridRowLayout* aRequestor)

{

  // XXX This should be set a better way!

  mGrid.SetBox(aBox);

  NS_ASSERTION(aBox->GetXULLayoutManager() == this, "setting incorrect box");

  return &mGrid;

}

void

nsGridLayout2::AddWidth(nsSize& aSize, nscoord aSize2, bool aIsHorizontal)

{

  nscoord& size = GET_WIDTH(aSize, aIsHorizontal);

  if (size != NS_INTRINSICSIZE) {

    if (aSize2 == NS_INTRINSICSIZE)

      size = NS_INTRINSICSIZE;

    else

      size += aSize2;

  }

}

nsSize

nsGridLayout2::GetXULMinSize(nsIFrame* aBox, nsBoxLayoutState& aState)

{

  nsSize minSize = nsStackLayout::GetXULMinSize(aBox, aState);

  // if there are no <rows> tags that will sum up our columns,

  // sum up our columns here.

  nsSize total(0,0);

  nsIFrame* rowsBox = mGrid.GetRowsBox();

  nsIFrame* columnsBox = mGrid.GetColumnsBox();

  if (!rowsBox || !columnsBox) {

    if (!rowsBox) {

      // max height is the sum of our rows

      int32_t rows = mGrid.GetRowCount();

      for (int32_t i=0; i < rows; i++)

      {

        nscoord height = mGrid.GetMinRowHeight(aState, i, true);

        AddWidth(total, height, false); // AddHeight

      }

    }

    if (!columnsBox) {

      // max height is the sum of our rows

      int32_t columns = mGrid.GetColumnCount();

      for (int32_t i=0; i < columns; i++)

      {

        nscoord width = mGrid.GetMinRowHeight(aState, i, false);

        AddWidth(total, width, true); // AddWidth

      }

    }

    AddMargin(aBox, total);

    AddOffset(aBox, total);

    AddLargestSize(minSize, total);

  }

  return minSize;

}

nsSize

nsGridLayout2::GetXULPrefSize(nsIFrame* aBox, nsBoxLayoutState& aState)

{

  nsSize pref = nsStackLayout::GetXULPrefSize(aBox, aState);

  // if there are no <rows> tags that will sum up our columns,

  // sum up our columns here.

  nsSize total(0,0);

  nsIFrame* rowsBox = mGrid.GetRowsBox();

  nsIFrame* columnsBox = mGrid.GetColumnsBox();

  if (!rowsBox || !columnsBox) {

    if (!rowsBox) {

      // max height is the sum of our rows

      int32_t rows = mGrid.GetRowCount();

      for (int32_t i=0; i < rows; i++)

      {

        nscoord height = mGrid.GetPrefRowHeight(aState, i, true);

        AddWidth(total, height, false); // AddHeight

      }

    }

    if (!columnsBox) {

      // max height is the sum of our rows

      int32_t columns = mGrid.GetColumnCount();

      for (int32_t i=0; i < columns; i++)

      {

        nscoord width = mGrid.GetPrefRowHeight(aState, i, false);

        AddWidth(total, width, true); // AddWidth

      }

    }

    AddMargin(aBox, total);

    AddOffset(aBox, total);

    AddLargestSize(pref, total);

  }

  return pref;

}

nsSize

nsGridLayout2::GetXULMaxSize(nsIFrame* aBox, nsBoxLayoutState& aState)

{

  nsSize maxSize = nsStackLayout::GetXULMaxSize(aBox, aState);

  // if there are no <rows> tags that will sum up our columns,

  // sum up our columns here.

  nsSize total(NS_INTRINSICSIZE, NS_INTRINSICSIZE);

  nsIFrame* rowsBox = mGrid.GetRowsBox();

  nsIFrame* columnsBox = mGrid.GetColumnsBox();

  if (!rowsBox || !columnsBox) {

    if (!rowsBox) {

      total.height = 0;

      // max height is the sum of our rows

      int32_t rows = mGrid.GetRowCount();

      for (int32_t i=0; i < rows; i++)

      {

        nscoord height = mGrid.GetMaxRowHeight(aState, i, true);

        AddWidth(total, height, false); // AddHeight

      }

    }

    if (!columnsBox) {

      total.width = 0;

      // max height is the sum of our rows

      int32_t columns = mGrid.GetColumnCount();

      for (int32_t i=0; i < columns; i++)

      {

        nscoord width = mGrid.GetMaxRowHeight(aState, i, false);

        AddWidth(total, width, true); // AddWidth

      }

    }

    AddMargin(aBox, total);

    AddOffset(aBox, total);

    AddSmallestSize(maxSize, total);

  }

  return maxSize;

}

int32_t

nsGridLayout2::BuildRows(nsIFrame* aBox, nsGridRow* aRows)

{

  if (aBox) {

    aRows[0].Init(aBox, true);

    return 1;

  }

  return 0;

}

nsMargin

nsGridLayout2::GetTotalMargin(nsIFrame* aBox, bool aIsHorizontal)

{

  nsMargin margin(0,0,0,0);

  return margin;

}

void

nsGridLayout2::ChildrenInserted(nsIFrame* aBox, nsBoxLayoutState& aState,

                                nsIFrame* aPrevBox,

                                const nsFrameList::Slice& aNewChildren)

{

  mGrid.NeedsRebuild(aState);

}

void

nsGridLayout2::ChildrenAppended(nsIFrame* aBox, nsBoxLayoutState& aState,

                                const nsFrameList::Slice& aNewChildren)

{

  mGrid.NeedsRebuild(aState);

}

void

nsGridLayout2::ChildrenRemoved(nsIFrame* aBox, nsBoxLayoutState& aState,

                               nsIFrame* aChildList)

{

  mGrid.NeedsRebuild(aState);

}

void

nsGridLayout2::ChildrenSet(nsIFrame* aBox, nsBoxLayoutState& aState,

                           nsIFrame* aChildList)

{

  mGrid.NeedsRebuild(aState);

}

NS_IMPL_ADDREF_INHERITED(nsGridLayout2, nsStackLayout)

NS_IMPL_RELEASE_INHERITED(nsGridLayout2, nsStackLayout)

NS_INTERFACE_MAP_BEGIN(nsGridLayout2)

  NS_INTERFACE_MAP_ENTRY(nsIGridPart)

  NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIGridPart)

NS_INTERFACE_MAP_END_INHERITING(nsStackLayout)