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1 // AbstractWarFoundryFactory.cs
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2 //
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3 // Copyright (C) 2008 IBBoard
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4 //
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5 // This library is free software; you can redistribute it and/or
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6 // modify it under the terms of the GNU Lesser General Public
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7 // License as published by the Free Software Foundation; either
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8 // version 2.1 of the License, or (at your option) any later version.
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9 //
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10 // This library is distributed in the hope that it will be useful,
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11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 // Lesser General Public License for more details.
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14 //
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15 // You should have received a copy of the GNU Lesser General Public
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16 // License along with this library; if not, write to the Free Software
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17 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 //
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19 //
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20
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21 using System;
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22 using System.IO;
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23 using System.Collections.Generic;
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24 using IBBoard.WarFoundry.API.Objects;
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25
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26 namespace IBBoard.WarFoundry.API.Factories
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27 {
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28 public abstract class AbstractWarFoundryFactory<FILE_TYPE> : IWarFoundryFactory
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29 {
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30 public bool CanHandleFileFormat (FileInfo file)
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31 {
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32 return CheckCanHandleFileFormat(GetFileAsSupportedType(file));
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33 }
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34
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35 /// <summary>
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36 /// Converts the <see cref="FileInfo"/> object in to the appropriate type for this class so that it can perform its checks. If no conversion is required (the test can be performed on a <see cref="FileInfo"/> object) the object should be returned with no modification.
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37 /// </summary>
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38 /// <param name="file">
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39 /// A <see cref="FileInfo"/> to get the supported source object from.
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40 /// </param>
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41 /// <returns>
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42 /// An object of type <see cref="FILE_TYPE"/> that has been converted from the input <see cref="FileInfo"/> object, or <code>null</code> if the conversion cannot be made.
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43 /// </returns>
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44 protected abstract FILE_TYPE GetFileAsSupportedType(FileInfo file);
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45
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46 /// <summary>
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47 /// Checks whether the factory thinks it can load data from the file in its paramaterised type.
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48 /// </summary>
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49 /// <param name="file">
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50 /// An object of the converted <see cref="FILE_TYPE"/> to check support for
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51 /// </param>
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52 /// <returns>
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53 /// <code>true</code> if the factory thinks it can support the file, else <code>false</code>
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54 /// </returns>
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55 protected abstract bool CheckCanHandleFileFormat(FILE_TYPE file);
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56
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57 public ICollection<IWarFoundryObject> CreateObjectsFromFile(FileInfo file)
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58 {
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59 return DoCreateObjectsFromFile(GetFileAsSupportedType(file));
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60 }
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61
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62 /// <summary>
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63 /// Reads the data from the supplied converted <see cref="FILE_TYPE"/> object and returns it as a collection of loadable objects.
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64 /// </summary>
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65 /// <param name="file">
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66 /// An object of the converted <see cref="FILE_TYPE"/> for the file to load data from
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67 /// </param>
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68 /// <returns>
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69 /// A <see cref="ICollection`1"/> of <see cref="IWarFoundryObject"/>s that were loaded from the file object
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70 /// </returns>
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71 protected abstract ICollection<IWarFoundryObject> DoCreateObjectsFromFile(FILE_TYPE file);
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72 }
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73 }
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