fixed build process and added project configuration files from idea

.classpath

@@ -1,13 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<classpath>
-	<classpathentry kind="src" path="src/main/java"/>
-	<classpathentry kind="src" path="src/main/resources"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21">
-		<attributes>
-			<attribute name="module" value="true"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry kind="lib" path="C:/Users/S700880/eclipse-workspace/Calc/src/main/java/flatlaf-3.7.jar">
-	<classpathentry kind="lib" path="C:/Users/S700880/eclipse-workspace/Calc/src/main/java/flatlaf-3.7-javadoc.jar">
-	<classpathentry kind="output" path="bin"/>
-</classpath>

.gitea/workflows/build.yml

@@ -12,8 +12,43 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
+
     - name: Set up JDK 20
       uses: actions/setup-java@v5
       with:
         java-version: '20'
         distribution: 'temurin'
+
+    - name: Create output directories
+      run: |
+        mkdir -p out/production/Calc
+        mkdir -p dist
+
+    - name: Compile Java files
+      run: |
+        javac -encoding UTF-8 -cp "lib/flatlaf-3.7.jar" -d out/production/Calc \
+          $(find src/main/java -name "*.java")
+
+    - name: Copy resources
+      run: |
+        if [ -d "src/main/resources" ]; then
+          cp -r src/main/resources/* out/production/Calc/ 2>/dev/null || true
+        fi
+
+    - name: Create manifest
+      run: |
+        echo "Manifest-Version: 1.0" > manifest.txt
+        echo "Main-Class: dev.sillyangel.calc.Calculator" >> manifest.txt
+        echo "Class-Path: lib/flatlaf-3.7.jar" >> manifest.txt
+
+    - name: Create JAR
+      run: |
+        cd out/production/Calc
+        jar cfm ../../../dist/CalcShortforCalculator.jar ../../../manifest.txt .
+        cd ../../..
+
+    - name: Upload JAR artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: CalcShortforCalculator
+        path: dist/CalcShortforCalculator.jar

.idea/.gitignore

@@ -0,0 +1,10 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Ignored default folder with query files
+/queries/
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/

.idea/copilot.data.migration.agent.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AgentMigrationStateService">
+    <option name="migrationStatus" value="COMPLETED" />
+  </component>
+</project>

.idea/copilot.data.migration.ask.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AskMigrationStateService">
+    <option name="migrationStatus" value="COMPLETED" />
+  </component>
+</project>

.idea/copilot.data.migration.edit.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="EditMigrationStateService">
+    <option name="migrationStatus" value="COMPLETED" />
+  </component>
+</project>

.idea/discord.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DiscordProjectSettings">
+    <option name="show" value="APPLICATION" />
+    <option name="description" value="" />
+  </component>
+</project>

.idea/libraries/lib.xml

@@ -0,0 +1,10 @@
+<component name="libraryTable">
+  <library name="lib">
+    <CLASSES>
+      <root url="jar://$PROJECT_DIR$/lib/flatlaf-3.7.jar!/" />
+      <root url="jar://$PROJECT_DIR$/lib/flatlaf-3.7-javadoc.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES />
+  </library>
+</component>

.idea/misc.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_20" project-jdk-name="temurin-20" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/Calc.iml" filepath="$PROJECT_DIR$/Calc.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>

.project

@@ -1,28 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<projectDescription>
-	<name>CalculatorButBetter</name>
-	<comment></comment>
-	<projects>
-	</projects>
-	<buildSpec>
-		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
-			<arguments>
-			</arguments>
-		</buildCommand>
-	</buildSpec>
-	<natures>
-		<nature>org.eclipse.jdt.core.javanature</nature>
-	</natures>
-	<filteredResources>
-		<filter>
-			<id>1763046761202</id>
-			<name></name>
-			<type>30</type>
-			<matcher>
-				<id>org.eclipse.core.resources.regexFilterMatcher</id>
-				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
-			</matcher>
-		</filter>
-	</filteredResources>
-</projectDescription>

.settings/org.eclipse.core.resources.prefs

@@ -1,2 +0,0 @@
-eclipse.preferences.version=1
-encoding/<project>=UTF-8

.settings/org.eclipse.jdt.core.prefs

@@ -1,12 +0,0 @@
-eclipse.preferences.version=1
-org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
-org.eclipse.jdt.core.compiler.codegen.targetPlatform=20
-org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
-org.eclipse.jdt.core.compiler.compliance=20
-org.eclipse.jdt.core.compiler.debug.lineNumber=generate
-org.eclipse.jdt.core.compiler.debug.localVariable=generate
-org.eclipse.jdt.core.compiler.debug.sourceFile=generate
-org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
-org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=warning
-org.eclipse.jdt.core.compiler.release=enabled
-org.eclipse.jdt.core.compiler.source=20

Calc.iml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" isTestSource="false" />
+      <excludeFolder url="file://$MODULE_DIR$/.gitea" />
+      <excludeFolder url="file://$MODULE_DIR$/.idea" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="lib" level="project" />
+  </component>
+</module>

src/main/java/dev/sillyangel/calc/Calculator.java

@@ -134,22 +134,26 @@ public class Calculator extends JFrame implements KeyListener {
 			}
 		});
 		modeselect.setEditable(false);
+		modeselect.setFocusable(false);
 
 		JButton btnNewButton_1 = new JButton("New button");
+		btnNewButton_1.setFocusable(false);
 		JLabel lblNewLabel = new JLabel("New label");
+		lblNewLabel.setFocusable(false);
 
 
 		panel.add(modeselect);
 		panel.add(lblNewLabel);
 		panel.add(btnNewButton_1);
 
-		JButton empty_4 = new JButton("");
+		JButton btnPercent = new JButton("%");
-		JButton empty_1 = new JButton("");
+		JButton btnClearEntry = new JButton("CE");
-		JButton empty_2 = new JButton("");
+		JButton btnReciprocal = new JButton("1/x");
-		JButton empty = new JButton("");
+		JButton btnSquare = new JButton("x²");
-		JButton empty_3 = new JButton("");
+		JButton btnSquareRoot = new JButton("√x");
 
-		JButton btnErase = new JButton("DEL");
+		// Use FlatLaf Tree.icon.collapsed as backspace-like icon (or just use text)
+		JButton btnBackspace = new JButton("⌫");
 		JButton btnClear = new JButton("C");
 		JButton btnPlusMin = new JButton("+/-");
 		JButton btnDot = new JButton(".");
@@ -186,15 +190,21 @@ public class Calculator extends JFrame implements KeyListener {
 			}
 		});
 
-		btnErase.addActionListener(new ActionListener() {
+		btnBackspace.addActionListener(new ActionListener() {
 			public void actionPerformed(ActionEvent e) {
-				clear();
+				backspace();
+			}
+		});
+
+		btnClearEntry.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				clearEntry();
 			}
 		});
 
 		btnClear.addActionListener(new ActionListener() {
 			public void actionPerformed(ActionEvent e) {
-				clear();
+				clearAll();
 			}
 		});
 
@@ -295,10 +305,35 @@ public class Calculator extends JFrame implements KeyListener {
 		    }
 		});
 
+		btnPercent.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				setOperator("%");
+			}
+		});
+
+		btnReciprocal.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				reciprocal();
+			}
+		});
+
+		btnSquare.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				square();
+			}
+		});
+
+		btnSquareRoot.addActionListener(new ActionListener() {
+			public void actionPerformed(ActionEvent e) {
+				squareRoot();
+			}
+		});
 
 
-		btnErase.setFont(new Font("Segoe UI", Font.PLAIN, 29));
+
+		btnBackspace.setFont(new Font("Segoe UI", Font.PLAIN, 29));
 		btnClear.setFont(new Font("Segoe UI", Font.PLAIN, 29));
+		btnClearEntry.setFont(new Font("Segoe UI", Font.PLAIN, 29));
 		btnPlusMin.setFont(new Font("Segoe UI", Font.PLAIN, 29));
 		btnEq.setFont(new Font("Segoe UI", Font.PLAIN, 29));
 		btnDot.setFont(new Font("Segoe UI", Font.PLAIN, 29));
@@ -316,20 +351,44 @@ public class Calculator extends JFrame implements KeyListener {
 		btnMin.setFont(new Font("Segoe UI", Font.PLAIN, 29));
 		btnDiv.setFont(new Font("Segoe UI", Font.PLAIN, 29));
 		btnPlus.setFont(new Font("Segoe UI", Font.PLAIN, 29));
+		btnPercent.setFont(new Font("Segoe UI", Font.PLAIN, 29));
+		btnReciprocal.setFont(new Font("Segoe UI", Font.PLAIN, 29));
+		btnSquare.setFont(new Font("Segoe UI", Font.PLAIN, 29));
+		btnSquareRoot.setFont(new Font("Segoe UI", Font.PLAIN, 29));
 
-		empty.setEnabled(false);
+		// Make all buttons non-focusable so keyboard input always goes to the frame
-		empty_1.setEnabled(false);
+		btnBackspace.setFocusable(false);
-		empty_2.setEnabled(false);
+		btnClear.setFocusable(false);
-		empty_3.setEnabled(false);
+		btnClearEntry.setFocusable(false);
-		empty_4.setEnabled(false);
+		btnPlusMin.setFocusable(false);
+		btnEq.setFocusable(false);
+		btnDot.setFocusable(false);
+		btn0.setFocusable(false);
+		btn1.setFocusable(false);
+		btn2.setFocusable(false);
+		btn3.setFocusable(false);
+		btn4.setFocusable(false);
+		btn5.setFocusable(false);
+		btn6.setFocusable(false);
+		btn7.setFocusable(false);
+		btn8.setFocusable(false);
+		btn9.setFocusable(false);
+		btnMul.setFocusable(false);
+		btnMin.setFocusable(false);
+		btnDiv.setFocusable(false);
+		btnPlus.setFocusable(false);
+		btnPercent.setFocusable(false);
+		btnReciprocal.setFocusable(false);
+		btnSquare.setFocusable(false);
+		btnSquareRoot.setFocusable(false);
 
-		buttonPanel.add(empty);
+		buttonPanel.add(btnPercent);
-		buttonPanel.add(empty_3);
+		buttonPanel.add(btnClearEntry);
 		buttonPanel.add(btnClear);
-		buttonPanel.add(btnErase);
+		buttonPanel.add(btnBackspace);
-		buttonPanel.add(empty_4);
+		buttonPanel.add(btnReciprocal);
-		buttonPanel.add(empty_1);
+		buttonPanel.add(btnSquare);
-		buttonPanel.add(empty_2);
+		buttonPanel.add(btnSquareRoot);
 		buttonPanel.add(btnDiv);
 		buttonPanel.add(btn7);
 		buttonPanel.add(btn8);
@@ -362,7 +421,7 @@ public class Calculator extends JFrame implements KeyListener {
 		}
 	}
 
-	void clear() {
+	void backspace() {
 		String tmp = display.getText();
 		if (tmp.length()>1) // if there is more than 1 character
 		    display.setText( tmp.substring(0, tmp.length()-1) );
@@ -370,6 +429,51 @@ public class Calculator extends JFrame implements KeyListener {
 		    display.setText("");
 	}
 
+	void clearEntry() {
+		// Clear only the current display (entry)
+		display.setText("");
+	}
+
+	void clearAll() {
+		// Clear everything including operands and operator
+		display.setText("");
+		operand1 = "";
+		operand2 = "";
+		operator = "";
+		resultVisible = false;
+	}
+
+	void reciprocal() {
+		String tmp = display.getText();
+		if (tmp == null || tmp.isEmpty()) return;
+		double value = Double.parseDouble(tmp);
+		if (value != 0) {
+			result = 1.0 / value;
+			display.setText("" + result);
+			resultVisible = true;
+		}
+	}
+
+	void square() {
+		String tmp = display.getText();
+		if (tmp == null || tmp.isEmpty()) return;
+		double value = Double.parseDouble(tmp);
+		result = value * value;
+		display.setText("" + result);
+		resultVisible = true;
+	}
+
+	void squareRoot() {
+		String tmp = display.getText();
+		if (tmp == null || tmp.isEmpty()) return;
+		double value = Double.parseDouble(tmp);
+		if (value >= 0) {
+			result = Math.sqrt(value);
+			display.setText("" + result);
+			resultVisible = true;
+		}
+	}
+
 	void processDigit(String actionCommand) {
 		if (resultVisible == true) {
 			display.setText("");
@@ -418,6 +522,8 @@ public class Calculator extends JFrame implements KeyListener {
 			result = op1*op2;
 		} else if (operator == "/") {
 			result = op1/op2;
+		} else if (operator == "%") {
+			result = op1 % op2;
 		} else {
 			result = op2;
 			System.out.println("Op: " + op1);
@@ -445,7 +551,7 @@ public class Calculator extends JFrame implements KeyListener {
        if (KeyEvent.getKeyText(keyCode) == "Enter") {
     	   math();
        } else if (e.getKeyCode() == KeyEvent.VK_BACK_SPACE) {
-    	   clear();
+    	   backspace();
        }
     }