feat: implemented JoinAction, sending/receiving cursor position

src/main/java/com/codemp/intellij/actions/ConnectAction.java

@@ -4,20 +4,32 @@ import com.codemp.intellij.jni.CodeMPHandler;
 import com.intellij.openapi.actionSystem.AnAction;
 import com.intellij.openapi.actionSystem.AnActionEvent;
 import com.intellij.openapi.ui.Messages;
+import cz.adamh.utils.NativeUtils;
 import org.jetbrains.annotations.NotNull;
 
+import java.io.IOException;
+
 public class ConnectAction extends AnAction {
 
 	static {
+		/*try {
+			NativeUtils.loadLibraryFromJar("/resources/libHelloJNI.so");
+		} catch(IOException e) {
+			throw new RuntimeException(e);
+		}*/
 		System.load("O:/dev/IRL/Rust/codemp/client/intellij/target/debug/codemp_intellij.dll");
 	}
 
 	@Override
 	public void actionPerformed(@NotNull AnActionEvent e) {
-		String url = Messages.showInputDialog("URL to CodeMP instance:", "CodeMP", Messages.getQuestionIcon());
+		String url = Messages.showInputDialog("URL to CodeMP instance:", "CodeMP Connect", Messages.getQuestionIcon());
+		if(url == null || url.isBlank())
+			url = "http://alemi.dev:50051";
+
 		try {
 			CodeMPHandler.connect(url);
-			Messages.showInfoMessage(String.format("Connected to %s!", url), "CodeMP");
+			//Messages.showInfoMessage(String.format("Connected to %s!", url), "CodeMP");
+			System.out.printf("Connected to %s!%n", url);
 		} catch(Exception ex) {
 			Messages.showErrorDialog(String.format("Failed to connect to %s: %s!", url, ex.getMessage()), "CodeMP");
 		}

src/main/java/com/codemp/intellij/actions/JoinAction.java

@@ -0,0 +1,106 @@
+package com.codemp.intellij.actions;
+
+import com.codemp.intellij.jni.CodeMPHandler;
+import com.codemp.intellij.jni.CursorEventWrapper;
+import com.codemp.intellij.jni.CursorHandler;
+import com.codemp.intellij.listeners.CursorEventListener;
+import com.intellij.openapi.actionSystem.AnAction;
+import com.intellij.openapi.actionSystem.AnActionEvent;
+import com.intellij.openapi.application.ApplicationManager;
+import com.intellij.openapi.editor.Document;
+import com.intellij.openapi.editor.Editor;
+import com.intellij.openapi.editor.EditorFactory;
+import com.intellij.openapi.editor.colors.TextAttributesKey;
+import com.intellij.openapi.editor.markup.HighlighterLayer;
+import com.intellij.openapi.editor.markup.HighlighterTargetArea;
+import com.intellij.openapi.editor.markup.RangeHighlighter;
+import com.intellij.openapi.editor.markup.TextAttributes;
+import com.intellij.openapi.fileEditor.FileEditorManager;
+import com.intellij.openapi.progress.ProgressIndicator;
+import com.intellij.openapi.progress.ProgressManager;
+import com.intellij.openapi.progress.Task;
+import com.intellij.openapi.ui.Messages;
+import com.intellij.ui.JBColor;
+import org.jetbrains.annotations.NotNull;
+
+import java.awt.*;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Objects;
+
+public class JoinAction extends AnAction {
+
+	private final Map<String, RangeHighlighter> highlighterMap = new HashMap<>();
+
+	private static final TextAttributes HIGHLIGHTED = new TextAttributes(
+		null, JBColor.BLUE, null, null, Font.PLAIN
+	);
+
+	@Override
+	public void actionPerformed(@NotNull AnActionEvent e) {
+		String session = Messages.showInputDialog(
+			"Session to connect to:",
+			"CodeMP Join",
+			Messages.getQuestionIcon());
+		if(session == null || session.isBlank())
+			session = "default";
+
+		try {
+			CursorHandler cursorHandler = CodeMPHandler.join(session);
+			EditorFactory.getInstance()
+				.getEventMulticaster()
+				.addCaretListener(new CursorEventListener());
+			//Messages.showInfoMessage(String.format("Joined %s!", session), "CodeMP");
+			System.out.printf(String.format("Joined %s!", session));
+			Editor editor = FileEditorManager.getInstance(Objects.requireNonNull(e.getProject()))
+				.getSelectedTextEditor();
+			assert editor != null;
+			Document document = editor.getDocument();
+			ProgressManager.getInstance().run(new Task.Backgroundable(e.getProject(), "Awaiting CodeMP cursor events") {
+				@Override
+				public void run(@NotNull ProgressIndicator indicator) {
+					while(true) {
+						try {
+							CursorEventWrapper event = cursorHandler.recv();
+							ApplicationManager.getApplication().invokeLater(() -> {
+								try {
+									RangeHighlighter h = highlighterMap.get(event.getUser());
+									if(h != null)
+										h.dispose();
+
+									System.out.printf(
+										"Cursor moved by user %s! Start pos: x%d y%d; end pos: x%d y%d with buffer %s%n\n",
+										event.getUser(),
+										event.getStartCol(), event.getStartCol(),
+										event.getEndRow(), event.getEndCol(),
+										event.getBuffer());
+
+									highlighterMap.put(event.getUser(), editor
+										.getMarkupModel()
+										.addRangeHighlighter(TextAttributesKey.createTextAttributesKey("codemp", HIGHLIGHTED),
+											document.getLineStartOffset(event.getStartRow()) + event.getStartCol(),
+											document.getLineStartOffset(event.getEndRow()) + event.getEndCol(),
+											HighlighterLayer.SELECTION,
+											HighlighterTargetArea.EXACT_RANGE
+										));
+								} catch(Exception ex) {
+									throw new RuntimeException();
+								}
+							});
+						} catch(Exception ex) {
+							throw new RuntimeException(ex);
+						}
+					}
+				}
+			});
+
+		} catch(Exception ex) {
+			Messages.showErrorDialog(String.format(
+					"Failed to join session %s: %s!",
+					session,
+					ex.getMessage()),
+				"CodeMP Join");
+		}
+	}
+}

src/main/java/com/codemp/intellij/listeners/CursorEventListener.java

@@ -0,0 +1,31 @@
+package com.codemp.intellij.listeners;
+
+import com.codemp.intellij.jni.CodeMPHandler;
+import com.intellij.openapi.editor.Caret;
+import com.intellij.openapi.editor.EditorFactory;
+import com.intellij.openapi.editor.VisualPosition;
+import com.intellij.openapi.editor.event.CaretEvent;
+import com.intellij.openapi.editor.event.CaretListener;
+import org.jetbrains.annotations.NotNull;
+
+public class CursorEventListener implements CaretListener {
+	@Override
+	public void caretPositionChanged(@NotNull CaretEvent event) {
+		System.out.println("called!");
+		Caret caret = event.getCaret();
+		if(caret == null)
+			return;
+		System.out.println("valid caret!");
+
+		try {
+			VisualPosition startPos = caret.getSelectionStartPosition();
+			VisualPosition endPos = caret.getSelectionEndPosition();
+			System.out.printf("start %dx %dy end %dx %dy", startPos.line, startPos.column, endPos.line, endPos.column);
+			CodeMPHandler.getCursor().send(
+				"", startPos.line, startPos.column, endPos.line, endPos.column
+			);
+		} catch(Exception ex) {
+			throw new RuntimeException(ex);
+		}
+	}
+}

src/main/resources/META-INF/plugin.xml

@@ -23,10 +23,13 @@
     <depends>com.intellij.modules.platform</depends>
 
     <actions>
-        <action id="connect" class="com.codemp.intellij.actions.ConnectAction" text="Connect">
+        <action id="codemp-connect" class="com.codemp.intellij.actions.ConnectAction" text="CodeMP Connect">
             <add-to-group group-id="ToolsMenu" anchor="first"></add-to-group>
         </action>
-    </actions>
+		<action id="codemp-join" class="com.codemp.intellij.actions.JoinAction" text="CodeMP Join">
+			<add-to-group group-id="ToolsMenu" anchor="first"></add-to-group>
+		</action>
+	</actions>
 
     <!-- Extension points defined by the plugin.
          Read more: https://plugins.jetbrains.com/docs/intellij/plugin-extension-points.html -->