#region MigraDoc - Creating Documents on the Fly
//
// Authors:
//   Klaus Potzesny (mailto:Klaus.Potzesny@pdfsharp.com)
//
// Copyright (c) 2001-2008 empira Software GmbH, Cologne (Germany)
//
// http://www.pdfsharp.com
// http://www.migradoc.com
// http://sourceforge.net/projects/pdfsharp
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 
// DEALINGS IN THE SOFTWARE.
#endregion

using System;
using System.Collections;

using MigraDoc.DocumentObjectModel;
using MigraDoc.DocumentObjectModel.Internals;

using PdfSharp.Drawing;

namespace MigraDoc.Rendering
{
  /// <summary>
  /// Represents a formatted header or footer.
  /// </summary>
  internal class FormattedHeaderFooter : IAreaProvider
  {
    internal FormattedHeaderFooter(HeaderFooter headerFooter, DocumentRenderer documentRenderer, FieldInfos fieldInfos)
    {
      this.headerFooter = headerFooter;
      this.fieldInfos = fieldInfos;
      this.documentRenderer = documentRenderer;
    }

    internal void Format(XGraphics gfx)
    {
      this.gfx = gfx;
      this.isFirstArea = true;
      this.formatter = new TopDownFormatter(this, this.documentRenderer, this.headerFooter.Elements);
      this.formatter.FormatOnAreas(gfx, false);
      this.contentHeight = RenderInfo.GetTotalHeight(GetRenderInfos());
    }

    Area IAreaProvider.GetNextArea()
    {
      if (this.isFirstArea)
        return new Rectangle(this.ContentRect.X, this.ContentRect.Y, this.ContentRect.Width, double.MaxValue);

      return null;
    }

    Area IAreaProvider.ProbeNextArea()
    {
      return null;
    }

    FieldInfos IAreaProvider.AreaFieldInfos
    {
      get { return this.fieldInfos; }
    }

    void IAreaProvider.StoreRenderInfos(ArrayList renderInfos)
    {
      this.renderInfos = renderInfos;
    }

    bool IAreaProvider.IsAreaBreakBefore(LayoutInfo layoutInfo)
    {
      return false;
    }


    internal RenderInfo[] GetRenderInfos()
    {
      if (this.renderInfos != null)
        return (RenderInfo[])this.renderInfos.ToArray(typeof(RenderInfo));

      return new RenderInfo[0];
    }

    internal Rectangle ContentRect
    {
      get
      { return this.contentRect; }
      set
      { this.contentRect = value; }
    }
    private Rectangle contentRect;

    XUnit ContentHeight
    {
      get
      {
        return this.contentHeight;
      }
    }

    bool IAreaProvider.PositionVertically(LayoutInfo layoutInfo)
    {
      IAreaProvider formattedDoc = (IAreaProvider)this.documentRenderer.FormattedDocument;
      return formattedDoc.PositionVertically(layoutInfo);
    }

    bool IAreaProvider.PositionHorizontally(LayoutInfo layoutInfo)
    {
      IAreaProvider formattedDoc = (IAreaProvider)this.documentRenderer.FormattedDocument;
      return formattedDoc.PositionHorizontally(layoutInfo); ;
    }

    private HeaderFooter headerFooter;
    private FieldInfos fieldInfos;
    private TopDownFormatter formatter;
    private ArrayList renderInfos;
    private XGraphics gfx;
    private bool isFirstArea;
    private XUnit contentHeight;
    private DocumentRenderer documentRenderer;
  }
}
