Did some API design for user settings, and moved GUI to a new package

1 files changed, 74 insertions, 0 deletions

diff --git a/src/main/java/sevenUnitsGUI/StandardDisplayRules.java b/src/main/java/sevenUnitsGUI/StandardDisplayRules.java
new file mode 100644
index 0000000..331f598
--- /dev/null
+++ b/src/main/java/sevenUnitsGUI/StandardDisplayRules.java
@@ -0,0 +1,74 @@
+/**
+ * Copyright (C) 2021 Adrien Hopkins
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+package sevenUnitsGUI;
+
+import java.util.function.Function;
+
+import sevenUnits.utils.UncertainDouble;
+
+/**
+ * The default rules for displaying numbers.
+ * 
+ * Unless otherwise stated, all of this class's functions throw
+ * {@link NullPointerException} when they receive a null parameter.
+ *
+ * @since 2021-12-24
+ */
+final class StandardDisplayRules {
+	/**
+	 * Rounds using UncertainDouble's toString method.
+	 */
+	private static final Function<UncertainDouble, String> SCIENTIFIC_ROUNDING_RULE = new Function<>() {
+		@Override
+		public String apply(UncertainDouble t) {
+			return t.toString(false);
+		}
+		
+		@Override
+		public String toString() {
+			return "Scientific Rounding";
+		}
+	};
+	
+	/**
+	 * @return a rule that rounds using UncertainDouble's own toString(false)
+	 *         function.
+	 * @since 2021-12-24
+	 */
+	public static final Function<UncertainDouble, String> getScientificRule() {
+		return SCIENTIFIC_ROUNDING_RULE;
+	}
+	
+	/**
+	 * Gets one of the standard rules from its string representation.
+	 *
+	 * @param ruleToString string representation of the display rule
+	 * @return display rule
+	 * @throws IllegalArgumentException if the provided string is not that of a
+	 *                                  standard rule.
+	 * @since 2021-12-24
+	 */
+	public static final Function<UncertainDouble, String> getStandardRule(
+			String ruleToString) {
+		throw new UnsupportedOperationException("Not implemented yet");
+	}
+	
+	private StandardDisplayRules() {
+		throw new AssertionError(
+				"This is a static utility class, you may not get instances of it.");
+	}
+}