feat(post): refresh de la liste des messages on-cick, ajout classe PostVector

chat/src/main/java/rtgre/chat/ChatController.java

@@ -23,6 +23,7 @@ import net.synedra.validatorfx.Check;
 import net.synedra.validatorfx.TooltipWrapper;
 import net.synedra.validatorfx.Validator;
 import rtgre.chat.graphisme.ContactListViewCell;
+import rtgre.chat.graphisme.PostListViewCell;
 import rtgre.modeles.Contact;
 import rtgre.modeles.ContactMap;
 import rtgre.modeles.Message;
@@ -196,6 +197,7 @@ public class ChatController implements Initializable {
     }
     private void initPostListView() {
         try {
+            postListView.setCellFactory(postListView -> new PostListViewCell(this));
             postListView.setItems(postsObservableList);
         } catch (Exception e) {
             LOGGER.severe(e.getMessage());
@@ -216,12 +218,20 @@ public class ChatController implements Initializable {
         return login;
     }
 
+    public Contact getContact() {
+        return contact;
+    }
+
+    public ContactMap getContactsMap() {
+        return contactMap;
+    }
+
     void handleContactSelection(Contact contactSelected) {
         if (contactSelected != null) {
             LOGGER.info("Clic sur " + contactSelected);
         }
         Post postSys = new Post("system", contactSelected.getLogin(), "Bienvenue dans la discussion avec " + contactSelected.getLogin());
         postsObservableList.add(postSys);
-
+        postListView.refresh();
     }
 }

chat/src/main/java/rtgre/chat/graphisme/PostListViewCell.java

@@ -0,0 +1,88 @@
+package rtgre.chat.graphisme;
+
+import rtgre.chat.ChatController;
+import javafx.embed.swing.SwingFXUtils;
+import javafx.geometry.Pos;
+import javafx.scene.Node;
+import javafx.scene.control.ListCell;
+import javafx.scene.image.ImageView;
+import javafx.scene.layout.*;
+import javafx.scene.paint.Color;
+import javafx.scene.text.*;
+import rtgre.modeles.Contact;
+import rtgre.modeles.Post;
+
+import java.awt.image.BufferedImage;
+import java.util.Date;
+
+public class PostListViewCell extends ListCell<Post> {
+
+    /** Controller de l'application */
+    ChatController controller;
+
+    public PostListViewCell(ChatController controller) {
+        this.controller = controller;
+    }
+
+    /**
+     * Callback déclenchée à chaque modification d'un objet d'une liste d'observable.
+     *
+     * @param post Le post
+     * @param empty      La liste de cellule doit-elle être complètement remise à zéro ?
+     */
+    @Override
+    protected void updateItem(Post post, boolean empty) {
+        super.updateItem(post, empty);
+        if (empty) {
+            setGraphic(null);
+        }
+        else {
+            updatePost(post);
+        }
+    }
+
+    void updatePost(Post post) {
+
+        Text datetimeText = new Text("\n%1$td/%1$tm/%1$tY %1$tH:%1$tM:%1$tS\n".formatted(new Date(post.getTimestamp())));
+        datetimeText.setFont(Font.font(null, FontPosture.ITALIC, 8));
+
+        Text nicknameText = new Text(post.getFrom() + ": ");
+        nicknameText.setFill(Color.DARKBLUE);
+        nicknameText.setFont(Font.font(null, FontWeight.BOLD, 14));
+        nicknameText.setFill(Color.BLUEVIOLET);
+
+        Text msgText = new Text(post.getBody());
+
+        // L'émetteur du message
+        Contact c = this.controller.getContactsMap().get(post.getFrom());
+        ImageView avatar = new ImageView();
+        if (c != null) {
+            avatar = new ImageView(SwingFXUtils.toFXImage((BufferedImage) c.getAvatar(), null));
+            avatar.setFitWidth(20);
+            avatar.setFitHeight(20);
+        }
+
+        TextFlow tf = new TextFlow((Node) datetimeText, avatar, nicknameText, msgText);
+        tf.maxWidthProperty().bind(getListView().widthProperty().multiply(0.8));
+        HBox hBox = new HBox(tf);
+        hBox.maxWidthProperty().bind(getListView().widthProperty());
+        String login;
+
+        try {
+            login = this.controller.getContact().getLogin();
+        }
+        catch (Exception e) {
+            login = "???";
+        }
+
+        if (post.getFrom().equals(login)) {
+            tf.setBackground(Background.fill(Color.web("#EEF")));
+            hBox.setAlignment(Pos.CENTER_RIGHT);
+        } else {
+            tf.setBackground(Background.fill(Color.web("#FEE")));
+            hBox.setAlignment(Pos.CENTER_LEFT);
+        }
+        setGraphic(hBox);
+        getListView().scrollTo(getListView().getItems().size() - 1);
+    }
+}

chat/src/main/java/rtgre/modeles/PostVector.java

@@ -0,0 +1,27 @@
+package rtgre.modeles;
+
+import java.util.UUID;
+import java.util.Vector;
+
+public class PostVector extends Vector<Post> {
+
+    public Post getPostById(UUID uuid) {
+        for (Post post : this) {
+            if (post.id == uuid) {
+                return post;
+            }
+        }
+        return null;
+    }
+
+    public Vector<Post> getPostsSince(long timestamp) {
+        Vector<Post> posts = new Vector<>();
+        for (Post post : this) {
+            if (post.timestamp > timestamp) {
+                posts.add(post);
+            }
+        }
+        return posts;
+    }
+
+}