OsmObject.cs

   1 /*
   2  * Author: Paolo Molaro
   3  * Copyright (c) 2008 Paolo Molaro lupus@oddwiz.org
   4  * License: MIT/X11, see the MIT.X11 file.
   5  */
   6 using System;
   7 using System.Collections;
   8 using System.Collections.Generic;
   9 using System.Xml;
  10 using System.Collections.Specialized;
  11
  12 namespace OpenStreetMap {
  13
  14         public abstract class OsmObject {
  15                 StringDictionary tags;
  16                 string user;
  17                 string timestamp;
  18                 long id;
  19                 bool visible;
  20                 bool changed;
  21
  22                 public abstract string ObjectType {
  23                         get;
  24                 }
  25
  26                 public virtual void WriteXml (XmlTextWriter writer)
  27                 {
  28                 }
  29
  30                 public long ID {
  31                         get {
  32                                 return id;
  33                         }
  34                         set {
  35                                 id = value;
  36                                 changed = true;
  37                         }
  38                 }
  39
  40                 public bool Visible {
  41                         get {
  42                                 return visible;
  43                         }
  44                         set {
  45                                 visible = value;
  46                                 changed = true;
  47                         }
  48                 }
  49
  50                 public bool Changed {
  51                         get {
  52                                 return changed;
  53                         }
  54                         set {
  55                                 changed = value;
  56                         }
  57                 }
  58
  59                 public string User {
  60                         get {
  61                                 return user;
  62                         }
  63                         set {
  64                                 user = value;
  65                                 changed = true;
  66                         }
  67                 }
  68
  69                 public string TimeStamp {
  70                         get {
  71                                 return timestamp;
  72                         }
  73                         set {
  74                                 timestamp = value;
  75                                 changed = true;
  76                         }
  77                 }
  78
  79                 public string this [string key] {
  80                         get {
  81                                 if (tags == null)
  82                                         return null;
  83                                 return tags [key];
  84                         }
  85                         set {
  86                                 if (tags == null)
  87                                         tags = new StringDictionary ();
  88                                 tags [key] = value;
  89                                 changed = true;
  90                         }
  91                 }
  92
  93                 public void RemoveTag (string tag)
  94                 {
  95                         if (tags == null)
  96                                 return;
  97                         tags.Remove (tag);
  98                 }
  99
 100                 public ICollection Tags {
 101                         get {
 102                                 if (tags == null)
 103                                         return new string [0];
 104                                 return tags.Keys;
 105                         }
 106                 }
 107
 108                 public void WriteCommonAttrs (XmlTextWriter writer)
 109                 {
 110                         writer.WriteAttributeString ("id", ID.ToString ());
 111                         writer.WriteAttributeString ("user", User);
 112                         writer.WriteAttributeString ("timestamp", TimeStamp);
 113                         writer.WriteAttributeString ("visible", Visible? "true": "false");
 114                 }
 115
 116                 public void WriteTags (XmlTextWriter writer)
 117                 {
 118                         if (tags == null)
 119                                 return;
 120                         foreach (string k in tags.Keys) {
 121                                 writer.WriteStartElement ("tag");
 122                                 writer.WriteAttributeString ("k", k);
 123                                 writer.WriteAttributeString ("v", tags [k]);
 124                                 writer.WriteEndElement ();
 125                         }
 126
 127                 }
 128         }
 129 }
 130