Added disabling of postButton while String.isBlank() returns true

src/main/java/envoy/client/ui/container/ChatWindow.java

@@ -4,9 +4,7 @@ import java.awt.*;
 import java.awt.datatransfer.StringSelection;
 import java.awt.event.*;
 import java.io.IOException;
-import java.util.Collection;
+import java.util.*;
-import java.util.HashMap;
-import java.util.Map;
 import java.util.logging.Level;
 import java.util.logging.Logger;
 
@@ -118,39 +116,44 @@ public class ChatWindow extends JFrame {
 		gbl_contentPane.columnWidths	= new int[] { 1, 1, 1 };
 		gbl_contentPane.rowHeights		= new int[] { 1, 1, 1, 1 };
 		gbl_contentPane.columnWeights	= new double[] { 0.03, 1.0, 0.1 };
-		gbl_contentPane.rowWeights		= new double[] { 0.03, 0.001, 1.0, 0.005 };
+		gbl_contentPane.rowWeights		= new double[] { 0.03, 0.001, 1.0, 0.001 };
 		contentPane.setLayout(gbl_contentPane);
 
-		// ContextMenu
-		Map<String, ActionListener> commands = new HashMap<>() {
-
-			private static final long serialVersionUID = -2755235774946990126L;
-
-			{
-				put("forward selected message",
-						evt -> forwardMessageToMultipleUsers(messageList.getSingleSelectedElement(),
-								ContactsChooserDialog
-									.showForwardingDialog("Forward selected message to", messageList.getSingleSelectedElement(), client)));
-				put("copy", evt -> {
-					// TODO should be enhanced to allow also copying of message attachments,
-					// especially pictures
-					StringSelection copy = new StringSelection(messageList.getSingleSelectedElement().getText());
-					Toolkit.getDefaultToolkit().getSystemClipboard().setContents(copy, copy);
-				});
-				// TODO insert implementation to edit and delete messages
-				put("delete", evt -> {});
-				put("edit", evt -> {});
-				put("quote", evt -> {});
-			}
-		};
-		contextMenu = new ContextMenu(null, messageList, commands, null, null).build();
-
 		messageList.setBorder(new EmptyBorder(space, space, space, space));
 		messageList.setSelectionMode(SelectionMode.SINGLE);
 		messageList.setSelectionHandler((message, comp, isSelected) -> {
 			final var theme = Settings.getInstance().getCurrentTheme();
 			comp.setBackground(isSelected ? theme.getSelectionColor() : theme.getCellColor());
-			contextMenu.show(comp, 0, 0);
+
+			// ContextMenu
+			Map<String, ActionListener> commands = new HashMap<>() {
+
+				private static final long serialVersionUID = -2755235774946990126L;
+
+				{
+					put("forward selected message", evt -> {
+						final Message selectedMessage = messageList.getSingleSelectedElement();
+						forwardMessage(selectedMessage,
+								ContactsChooserDialog
+									.showForwardingDialog("Forward selected message to", null, selectedMessage, localDb.getUsers().values())
+									.toArray(new User[0]));
+					});
+					put("copy", evt -> {
+						// TODO should be enhanced to allow also copying of message attachments,
+						// especially pictures
+						StringSelection copy = new StringSelection(messageList.getSingleSelectedElement().getText());
+						Toolkit.getDefaultToolkit().getSystemClipboard().setContents(copy, copy);
+					});
+					// TODO insert implementation to edit and delete messages
+					put("delete", evt -> {});
+					put("edit", evt -> {});
+					put("quote", evt -> {});
+				}
+			};
+			if (isSelected) {
+				contextMenu = new ContextMenu(null, comp, commands, null, null).build();
+				contextMenu.show(comp, 0, 0);
+			}
 		});
 
 		scrollPane.setViewportView(messageList);
@@ -180,7 +183,10 @@ public class ChatWindow extends JFrame {
 		messageEnterTextArea.addInputMethodListener(new InputMethodListener() {
 
 			@Override
-			public void inputMethodTextChanged(InputMethodEvent event) { checkMessageTextLength(); }
+			public void inputMethodTextChanged(InputMethodEvent event) {
+				checkMessageTextLength();
+				checkPostButton(messageEnterTextArea.getText());
+			}
 
 			@Override
 			public void caretPositionChanged(InputMethodEvent event) {}
@@ -191,31 +197,30 @@ public class ChatWindow extends JFrame {
 			@Override
 			public void keyReleased(KeyEvent e) {
 				if (e.getKeyCode() == KeyEvent.VK_ENTER
-						&& (Settings.getInstance().isEnterToSend() && e.getModifiersEx() == 0 || e.getModifiersEx() == KeyEvent.CTRL_DOWN_MASK))
+						&& (Settings.getInstance().isEnterToSend() && e.getModifiersEx() == 0 || e.getModifiersEx() == KeyEvent.CTRL_DOWN_MASK)
+						&& postButton.isEnabled())
 					postMessage();
 				// Checking if text is too long
 				checkMessageTextLength();
+				checkPostButton(messageEnterTextArea.getText());
 			}
 		});
 
-		GridBagConstraints gbc_scrollPaneForTextInput = new GridBagConstraints();
+		GridBagConstraints gbc_messageEnterTextArea = new GridBagConstraints();
-		gbc_scrollPaneForTextInput.fill		= GridBagConstraints.BOTH;
+		gbc_messageEnterTextArea.fill	= GridBagConstraints.BOTH;
-		gbc_scrollPaneForTextInput.gridx	= 1;
+		gbc_messageEnterTextArea.gridx	= 1;
-		gbc_scrollPaneForTextInput.gridy	= 3;
+		gbc_messageEnterTextArea.gridy	= 3;
-
+		gbc_messageEnterTextArea.insets = insets;
-		gbc_scrollPaneForTextInput.insets = insets;
+		contentPane.add(messageEnterTextArea, gbc_messageEnterTextArea);
-
-		contentPane.add(messageEnterTextArea, gbc_scrollPaneForTextInput);
 
 		// Post Button
 		GridBagConstraints gbc_postButton = new GridBagConstraints();
-
 		gbc_postButton.fill		= GridBagConstraints.BOTH;
 		gbc_postButton.gridx	= 2;
 		gbc_postButton.gridy	= 3;
 		gbc_postButton.insets = insets;
-
 		postButton.addActionListener((evt) -> { postMessage(); });
+		postButton.setEnabled(false);
 		contentPane.add(postButton, gbc_postButton);
 
 		// Settings Button
@@ -552,6 +557,7 @@ public class ChatWindow extends JFrame {
 		sendMessage(message);
 		// Clear text field
 		messageEnterTextArea.setText("");
+		postButton.setEnabled(false);
 	}
 
 	/**
@@ -684,4 +690,6 @@ public class ChatWindow extends JFrame {
 					JOptionPane.WARNING_MESSAGE);
 		}
 	}
+
+	private void checkPostButton(String text) { postButton.setEnabled(!text.trim().isBlank()); }
 }