Last change
on this file since 14625 was 9751, checked in by Don-vip, 8 years ago |
see #12462 - Extend Save Layers dialog for more layer types (patch by holgermappt, modified for checkstyle compliance)
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1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.gui.layer;
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3 |
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4 | /**
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5 | * Interface for layers that can save data to a file.
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6 | * @since 9751
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7 | */
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8 | public interface SaveToFile {
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9 |
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10 | /**
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11 | * Replies the savable state of the layer (i.e. if it can be saved through
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12 | * a "File->Save" dialog). A layer that implements the
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13 | * {@code SaveToFile} interface must return {@code true}.
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14 | *
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15 | * @return {@code true} if the layer can be saved to a file; {@code false}, otherwise
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16 | */
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17 | boolean isSavable();
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18 |
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19 | /**
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20 | * Determines if the data managed by this layer needs to be saved to
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21 | * a file. Only replies true if a file is assigned to this layer and
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22 | * if the data managed by this layer has been modified since the last
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23 | * save operation to the file.
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24 | *
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25 | * @return {@code true} if the data managed by this layer needs to be saved to a file; {@code false}, otherwise
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26 | */
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27 | boolean requiresSaveToFile();
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28 |
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29 | /**
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30 | * Initializes the layer after a successful save of data to a file.
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31 | */
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32 | void onPostSaveToFile();
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33 | }
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