#region License Information
// Copyright (c) 2014 AlphaSierraPapa for the SharpDevelop Team
// 
// 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.

/* HeuristicLab
 * Copyright (C) Heuristic and Evolutionary Algorithms Laboratory (HEAL)
 *
 * This file is part of HeuristicLab.
 *
 * HeuristicLab is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * HeuristicLab is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with HeuristicLab. If not, see <http://www.gnu.org/licenses/>.
 */
#endregion

using System;
using System.Collections.Generic;
using System.Windows;
using System.Windows.Media;

namespace ICSharpCode.SharpDevelop.Editor {
  /// <summary>
  /// Represents a text marker.
  /// </summary>
  public interface ITextMarker {
    /// <summary>
    /// Gets the start offset of the marked text region.
    /// </summary>
    int StartOffset { get; }

    /// <summary>
    /// Gets the end offset of the marked text region.
    /// </summary>
    int EndOffset { get; }

    /// <summary>
    /// Gets the length of the marked region.
    /// </summary>
    int Length { get; }

    /// <summary>
    /// Deletes the text marker.
    /// </summary>
    void Delete();

    /// <summary>
    /// Gets whether the text marker was deleted.
    /// </summary>
    bool IsDeleted { get; }

    /// <summary>
    /// Event that occurs when the text marker is deleted.
    /// </summary>
    event EventHandler Deleted;

    /// <summary>
    /// Gets/Sets the background color.
    /// </summary>
    Color? BackgroundColor { get; set; }

    /// <summary>
    /// Gets/Sets the foreground color.
    /// </summary>
    Color? ForegroundColor { get; set; }

    /// <summary>
    /// Gets/Sets the font weight.
    /// </summary>
    FontWeight? FontWeight { get; set; }

    /// <summary>
    /// Gets/Sets the font style.
    /// </summary>
    FontStyle? FontStyle { get; set; }

    /// <summary>
    /// Gets/Sets the type of the marker. Use TextMarkerType.None for normal markers.
    /// </summary>
    TextMarkerTypes MarkerTypes { get; set; }

    /// <summary>
    /// Gets/Sets the color of the marker.
    /// </summary>
    Color MarkerColor { get; set; }

    /// <summary>
    /// Gets/Sets an object with additional data for this text marker.
    /// </summary>
    object Tag { get; set; }

    /// <summary>
    /// Gets/Sets an object that will be displayed as tooltip in the text editor.
    /// </summary>
    object ToolTip { get; set; }
  }

  [Flags]
  public enum TextMarkerTypes {
    /// <summary>
    /// Use no marker
    /// </summary>
    None = 0x0000,
    /// <summary>
    /// Use squiggly underline marker
    /// </summary>
    SquigglyUnderline = 0x001,
    /// <summary>
    /// Normal underline.
    /// </summary>
    NormalUnderline = 0x002,
    /// <summary>
    /// Dotted underline.
    /// </summary>
    DottedUnderline = 0x004,

    /// <summary>
    /// Horizontal line in the scroll bar.
    /// </summary>
    LineInScrollBar = 0x0100,
    /// <summary>
    /// Small triangle in the scroll bar, pointing to the right.
    /// </summary>
    ScrollBarRightTriangle = 0x0400,
    /// <summary>
    /// Small triangle in the scroll bar, pointing to the left.
    /// </summary>
    ScrollBarLeftTriangle = 0x0800,
    /// <summary>
    /// Small circle in the scroll bar.
    /// </summary>
    CircleInScrollBar = 0x1000
  }

  public interface ITextMarkerService {
    /// <summary>
    /// Creates a new text marker. The text marker will be invisible at first,
    /// you need to set one of the Color properties to make it visible.
    /// </summary>
    ITextMarker Create(int startOffset, int length);

    /// <summary>
    /// Gets the list of text markers.
    /// </summary>
    IEnumerable<ITextMarker> TextMarkers { get; }

    /// <summary>
    /// Removes the specified text marker.
    /// </summary>
    void Remove(ITextMarker marker);

    /// <summary>
    /// Removes all text markers that match the condition.
    /// </summary>
    void RemoveAll(Predicate<ITextMarker> predicate);

    /// <summary>
    /// Finds all text markers at the specified offset.
    /// </summary>
    IEnumerable<ITextMarker> GetMarkersAtOffset(int offset);
  }
}