//
// ProjectImportElement.cs
//
// Author:
//   Leszek Ciesielski (skolima@gmail.com)
//
// (C) 2011 Leszek Ciesielski
//
// 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.
//

using System;
using System.Xml;
using Microsoft.Build.Exceptions;


namespace Microsoft.Build.Construction
{
        [System.Diagnostics.DebuggerDisplayAttribute ("Project={Project} Condition={Condition}")]
        public class ProjectImportElement : ProjectElement
        {
                internal ProjectImportElement (string project, ProjectRootElement containingProject)
                        : this(containingProject)
                {
                        Project = project;
                }

                internal ProjectImportElement (ProjectRootElement containingProject)
                {
                        ContainingProject = containingProject;
                }

                string project;
                public string Project { get { return project ?? String.Empty; } set { project = value; } }

                internal override string XmlName {
                        get { return "Import"; }
                }

                internal override void SaveValue (XmlWriter writer)
                {
                        SaveAttribute (writer, "Project", Project);
                        base.SaveValue (writer);
                }
                
                internal override void LoadValue (XmlReader reader)
                {
                        if (string.IsNullOrWhiteSpace (Project))
                                throw new InvalidProjectFileException (Location, null, "Project attribute is null or empty on an Import element");
                        base.LoadValue (reader);
                }

                internal override void LoadAttribute (string name, string value)
                {
                        switch (name) {
                        case "Project":
                                Project = value;
                                break;
                        default:
                                base.LoadAttribute (name, value);
                                break;
                        }
                }
        }
}