X-Git-Url: https://git.pterodactylus.net/?a=blobdiff_plain;f=src%2Fmain%2Fjava%2Fnet%2Fpterodactylus%2Fdemoscenemusic%2Fdata%2FProperties.java;h=74bf52461d7414461e201f800f54cfd7d6ae4d32;hb=ab171583f8680b47b35699bacafb6a1f65563571;hp=dfdb83619466c74544cf8d2528dbb28c96152d4a;hpb=6824ff7746ed9f1d6d7b68d24d3d02686f2218ac;p=demoscenemusic.git

diff --git a/src/main/java/net/pterodactylus/demoscenemusic/data/Properties.java b/src/main/java/net/pterodactylus/demoscenemusic/data/Properties.java
index dfdb836..74bf524 100644
--- a/src/main/java/net/pterodactylus/demoscenemusic/data/Properties.java
+++ b/src/main/java/net/pterodactylus/demoscenemusic/data/Properties.java
@@ -17,10 +17,10 @@
 
 package net.pterodactylus.demoscenemusic.data;
 
-import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.TreeMap;
 
 /**
  * Container for custom properties that can be attached to all data containers.
@@ -31,7 +31,10 @@ import java.util.Map.Entry;
 public class Properties implements Iterable<Entry<String, String>> {
 
 	/** The properties. */
-	private final Map<String, String> properties = new HashMap<String, String>();
+	private final Map<String, String> properties = new TreeMap<String, String>();
+
+	/** The “dirty” flag. */
+	private boolean dirty = false;
 
 	//
 	// ACCESSORS
@@ -59,6 +62,9 @@ public class Properties implements Iterable<Entry<String, String>> {
 	 * @return These properties
 	 */
 	public Properties set(String property, String value) {
+		if (!properties.containsKey(property) || (((value != null) && (!value.equals(properties.get(property))) || ((value == null) && (properties.get(property) != null))))) {
+			dirty = true;
+		}
 		properties.put(property, value);
 		return this;
 	}
@@ -71,6 +77,9 @@ public class Properties implements Iterable<Entry<String, String>> {
 	 * @return These properties
 	 */
 	public Properties remove(String property) {
+		if (properties.containsKey(property)) {
+			dirty = true;
+		}
 		properties.remove(property);
 		return this;
 	}
@@ -81,10 +90,34 @@ public class Properties implements Iterable<Entry<String, String>> {
 	 * @return These properties
 	 */
 	public Properties removeAll() {
+		if (!properties.isEmpty()) {
+			dirty = true;
+		}
 		properties.clear();
 		return this;
 	}
 
+	/**
+	 * Returns whether these properties have been modified.
+	 *
+	 * @return {@code true} if the properties have been modified since they were
+	 *         created or the last time {@link #resetDirty()} was called,
+	 *         {@code false} if they have not been modified
+	 */
+	public boolean isDirty() {
+		return dirty;
+	}
+
+	/**
+	 * Resets the dirty flag.
+	 *
+	 * @return These properties
+	 */
+	public Properties resetDirty() {
+		dirty = false;
+		return this;
+	}
+
 	//
 	// ITERABLE METHODS
 	//