Added the ability to navigate to a specific transaction.

src/main/java/com/andrewlalis/perfin/control/TransactionViewController.java

@@ -54,14 +54,14 @@ public class TransactionViewController {
             Profile.getCurrent().getDataSource().useTransactionRepository(repo -> {
                 CreditAndDebitAccounts accounts = repo.findLinkedAccounts(transaction.getId());
                 Platform.runLater(() -> {
-                    if (accounts.hasDebit()) {
+                    accounts.ifDebit(acc -> {
-                        debitAccountLink.setText(accounts.debitAccount().getShortName());
+                        debitAccountLink.setText(acc.getShortName());
-                        debitAccountLink.setOnAction(event -> router.navigate("account", accounts.debitAccount()));
+                        debitAccountLink.setOnAction(event -> router.navigate("account", acc));
-                    }
+                    });
-                    if (accounts.hasCredit()) {
+                    accounts.ifCredit(acc -> {
-                        creditAccountLink.setText(accounts.creditAccount().getShortName());
+                        creditAccountLink.setText(acc.getShortName());
-                        creditAccountLink.setOnAction(event -> router.navigate("account", accounts.creditAccount()));
+                        creditAccountLink.setOnAction(event -> router.navigate("account", acc));
-                    }
+                    });
                 });
             });
         });
@@ -105,5 +105,6 @@ public class TransactionViewController {
         TextFlow parent = (TextFlow) link.getParent();
         parent.managedProperty().bind(parent.visibleProperty());
         parent.visibleProperty().bind(link.textProperty().isNotEmpty());
+        link.setText(null);
     }
 }

src/main/java/com/andrewlalis/perfin/control/TransactionsViewController.java

@@ -1,13 +1,13 @@
 package com.andrewlalis.perfin.control;
 
 import com.andrewlalis.javafx_scene_router.RouteSelectionListener;
-import com.andrewlalis.perfin.data.util.Pair;
-import com.andrewlalis.perfin.view.SceneUtil;
 import com.andrewlalis.perfin.data.pagination.Page;
 import com.andrewlalis.perfin.data.pagination.PageRequest;
 import com.andrewlalis.perfin.data.pagination.Sort;
+import com.andrewlalis.perfin.data.util.Pair;
 import com.andrewlalis.perfin.model.Profile;
 import com.andrewlalis.perfin.model.Transaction;
+import com.andrewlalis.perfin.view.SceneUtil;
 import com.andrewlalis.perfin.view.component.DataSourcePaginationControls;
 import com.andrewlalis.perfin.view.component.TransactionTile;
 import javafx.beans.property.ObjectProperty;
@@ -19,9 +19,21 @@ import javafx.scene.layout.BorderPane;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.VBox;
 
+import java.util.List;
+
 import static com.andrewlalis.perfin.PerfinApp.router;
 
+/**
+ * Controller for the view of all transactions in a user's profile.
+ * Transactions are displayed in a paginated manner, and this controller
+ * accepts as a route context a {@link PageRequest} to initialize the results
+ * to a specific page.
+ */
 public class TransactionsViewController implements RouteSelectionListener {
+    public static List<Sort> DEFAULT_SORTS = List.of(Sort.desc("timestamp"));
+    public static int DEFAULT_ITEMS_PER_PAGE = 5;
+    public record RouteContext(Long selectedTransactionId) {}
+
     @FXML public BorderPane transactionsListBorderPane;
     @FXML public VBox transactionsVBox;
     private DataSourcePaginationControls paginationControls;
@@ -80,8 +92,23 @@ public class TransactionsViewController implements RouteSelectionListener {
 
     @Override
     public void onRouteSelected(Object context) {
-        paginationControls.sorts.setAll(Sort.desc("timestamp"));
+        paginationControls.sorts.setAll(DEFAULT_SORTS);
-        this.paginationControls.setPage(1);
+        paginationControls.itemsPerPage.set(DEFAULT_ITEMS_PER_PAGE);
+
+        // If a transaction id is given in the route context, navigate to the page it's on and select it.
+        if (context instanceof RouteContext ctx && ctx.selectedTransactionId != null) {
+            Thread.ofVirtual().start(() -> {
+                Profile.getCurrent().getDataSource().useTransactionRepository(repo -> {
+                    repo.findById(ctx.selectedTransactionId).ifPresent(tx -> {
+                        long offset = repo.countAllAfter(tx.getId());
+                        int pageNumber = (int) (offset / DEFAULT_ITEMS_PER_PAGE) + 1;
+                        paginationControls.setPage(pageNumber).thenRun(() -> selectedTransaction.set(tx));
+                    });
+                });
+            });
+        } else {
+            paginationControls.setPage(1);
+        }
     }
 
     @FXML
@@ -92,13 +119,13 @@ public class TransactionsViewController implements RouteSelectionListener {
     private TransactionTile makeTile(Transaction transaction) {
         var tile = new TransactionTile(transaction);
         tile.setOnMouseClicked(event -> {
-            if (selectedTransaction.get() == null || selectedTransaction.get().getId() != transaction.getId()) {
+            if (selectedTransaction.get() == null || !selectedTransaction.get().equals(transaction)) {
                 selectedTransaction.set(transaction);
             } else {
                 selectedTransaction.set(null);
             }
         });
-        tile.selected.bind(selectedTransaction.map(t -> t != null && t.getId() == transaction.getId()));
+        tile.selected.bind(selectedTransaction.map(t -> t != null && t.equals(transaction)));
         return tile;
     }
 }

src/main/java/com/andrewlalis/perfin/data/TransactionRepository.java

@@ -11,6 +11,7 @@ import java.nio.file.Path;
 import java.time.LocalDateTime;
 import java.util.Currency;
 import java.util.List;
+import java.util.Optional;
 import java.util.Set;
 
 public interface TransactionRepository extends AutoCloseable {
@@ -22,8 +23,10 @@ public interface TransactionRepository extends AutoCloseable {
             CreditAndDebitAccounts linkedAccounts,
             List<Path> attachments
     );
+    Optional<Transaction> findById(long id);
     Page<Transaction> findAll(PageRequest pagination);
     long countAll();
+    long countAllAfter(long transactionId);
     Page<Transaction> findAllByAccounts(Set<Long> accountIds, PageRequest pagination);
     CreditAndDebitAccounts findLinkedAccounts(long transactionId);
     List<Attachment> findAttachments(long transactionId);

src/main/java/com/andrewlalis/perfin/data/impl/JdbcTransactionRepository.java

@@ -2,10 +2,10 @@ package com.andrewlalis.perfin.data.impl;
 
 import com.andrewlalis.perfin.data.AccountEntryRepository;
 import com.andrewlalis.perfin.data.AttachmentRepository;
-import com.andrewlalis.perfin.data.util.DbUtil;
 import com.andrewlalis.perfin.data.TransactionRepository;
 import com.andrewlalis.perfin.data.pagination.Page;
 import com.andrewlalis.perfin.data.pagination.PageRequest;
+import com.andrewlalis.perfin.data.util.DbUtil;
 import com.andrewlalis.perfin.model.*;
 
 import java.math.BigDecimal;
@@ -14,10 +14,7 @@ import java.sql.Connection;
 import java.sql.ResultSet;
 import java.sql.SQLException;
 import java.time.LocalDateTime;
-import java.util.Collections;
+import java.util.*;
-import java.util.Currency;
-import java.util.List;
-import java.util.Set;
 import java.util.stream.Collectors;
 
 public record JdbcTransactionRepository(Connection conn, Path contentDir) implements TransactionRepository {
@@ -55,6 +52,11 @@ public record JdbcTransactionRepository(Connection conn, Path contentDir) implem
         });
     }
 
+    @Override
+    public Optional<Transaction> findById(long id) {
+        return DbUtil.findById(conn, "SELECT * FROM transaction WHERE id = ?", id, JdbcTransactionRepository::parseTransaction);
+    }
+
     @Override
     public Page<Transaction> findAll(PageRequest pagination) {
         return DbUtil.findAll(
@@ -70,6 +72,16 @@ public record JdbcTransactionRepository(Connection conn, Path contentDir) implem
         return DbUtil.findOne(conn, "SELECT COUNT(id) FROM transaction", Collections.emptyList(), rs -> rs.getLong(1)).orElse(0L);
     }
 
+    @Override
+    public long countAllAfter(long transactionId) {
+        return DbUtil.findOne(
+                conn,
+                "SELECT COUNT(id) FROM transaction WHERE timestamp > (SELECT timestamp FROM transaction WHERE id = ?)",
+                List.of(transactionId),
+                rs -> rs.getLong(1)
+        ).orElse(0L);
+    }
+
     @Override
     public Page<Transaction> findAllByAccounts(Set<Long> accountIds, PageRequest pagination) {
         String idsStr = accountIds.stream().map(String::valueOf).collect(Collectors.joining(","));

src/main/java/com/andrewlalis/perfin/model/Transaction.java

@@ -11,11 +11,11 @@ import java.util.Currency;
  * entries that apply this transaction's amount to one or more accounts.
  */
 public class Transaction {
-    private long id;
+    private final long id;
-    private LocalDateTime timestamp;
+    private final LocalDateTime timestamp;
 
-    private BigDecimal amount;
+    private final BigDecimal amount;
-    private Currency currency;
+    private final Currency currency;
     private String description;
 
     public Transaction(long id, LocalDateTime timestamp, BigDecimal amount, Currency currency, String description) {
@@ -26,13 +26,6 @@ public class Transaction {
         this.description = description;
     }
 
-    public Transaction(LocalDateTime timestamp, BigDecimal amount, Currency currency, String description) {
-        this.timestamp = timestamp;
-        this.amount = amount;
-        this.currency = currency;
-        this.description = description;
-    }
-
     public long getId() {
         return id;
     }
@@ -52,4 +45,9 @@ public class Transaction {
     public String getDescription() {
         return description;
     }
+
+    @Override
+    public boolean equals(Object other) {
+        return other instanceof Transaction tx && id == tx.id;
+    }
 }

src/main/java/com/andrewlalis/perfin/view/component/AccountHistoryItemTile.java

@@ -1,5 +1,6 @@
 package com.andrewlalis.perfin.view.component;
 
+import com.andrewlalis.perfin.control.TransactionsViewController;
 import com.andrewlalis.perfin.data.AccountHistoryItemRepository;
 import com.andrewlalis.perfin.data.util.CurrencyUtil;
 import com.andrewlalis.perfin.data.util.DateUtil;
@@ -13,6 +14,8 @@ import javafx.scene.layout.BorderPane;
 import javafx.scene.text.Text;
 import javafx.scene.text.TextFlow;
 
+import static com.andrewlalis.perfin.PerfinApp.router;
+
 /**
  * A tile that shows a brief bit of information about an account history item.
  */
@@ -41,6 +44,10 @@ public class AccountHistoryItemTile extends BorderPane {
     private Node buildAccountEntryItem(AccountEntry entry) {
         Text amountText = new Text(CurrencyUtil.formatMoney(entry.getSignedAmount(), entry.getCurrency()));
         Hyperlink transactionLink = new Hyperlink("Transaction #" + entry.getTransactionId());
+        transactionLink.setOnAction(event -> router.navigate(
+                "transactions",
+                new TransactionsViewController.RouteContext(entry.getTransactionId())
+        ));
         return new TextFlow(
                 transactionLink,
                 new Text("posted as a " + entry.getType().name().toLowerCase() + " to this account, with a value of "),

src/main/java/com/andrewlalis/perfin/view/component/AttachmentPreview.java

@@ -1,5 +1,6 @@
 package com.andrewlalis.perfin.view.component;
 
+import com.andrewlalis.perfin.PerfinApp;
 import com.andrewlalis.perfin.model.Attachment;
 import com.andrewlalis.perfin.model.Profile;
 import com.andrewlalis.perfin.view.ImageCache;
@@ -11,6 +12,7 @@ import javafx.scene.paint.Color;
 
 import java.io.IOException;
 import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.Set;
 
 /**
@@ -58,7 +60,8 @@ public class AttachmentPreview extends BorderPane {
         this.setCenter(stackPane);
         this.setOnMouseClicked(event -> {
             if (this.isHover()) {
-                System.out.println("Opening attachment: " + attachment.getFilename());
+                Path filePath = attachment.getPath(Profile.getContentDir(Profile.getCurrent().getName()));
+                PerfinApp.instance.getHostServices().showDocument(filePath.toAbsolutePath().toUri().toString());
             }
         });
     }

src/main/java/com/andrewlalis/perfin/view/component/DataSourcePaginationControls.java

@@ -9,7 +9,6 @@ import javafx.beans.property.IntegerProperty;
 import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleIntegerProperty;
 import javafx.collections.FXCollections;
-import javafx.collections.ListChangeListener;
 import javafx.collections.ObservableList;
 import javafx.geometry.Pos;
 import javafx.scene.Node;
@@ -20,6 +19,8 @@ import javafx.scene.text.Text;
 import javafx.scene.text.TextAlignment;
 import javafx.scene.text.TextFlow;
 
+import java.util.concurrent.CompletableFuture;
+
 /**
  * A pane that contains some controls for navigating a paginated data source.
  * That includes going to the next/previous page, setting the preferred page
@@ -66,10 +67,6 @@ public class DataSourcePaginationControls extends BorderPane {
         nextPageButton.disableProperty().bind(fetching.or(currentPage.greaterThanOrEqualTo(maxPages)));
         nextPageButton.setOnAction(event -> setPage(currentPage.get() + 1));
 
-//        sorts.addListener((ListChangeListener<Sort>) c -> {
-//            setPage(1);
-//        });
-
         HBox hbox = new HBox(
                 previousPageButton,
                 pageTextContainer,
@@ -79,7 +76,8 @@ public class DataSourcePaginationControls extends BorderPane {
         setCenter(hbox);
     }
 
-    public void setPage(int page) {
+    public CompletableFuture<Void> setPage(int page) {
+        CompletableFuture<Void> cf = new CompletableFuture<>();
         fetching.set(true);
         PageRequest pagination = new PageRequest(page - 1, itemsPerPage.get(), sorts);
         Thread.ofVirtual().start(() -> {
@@ -97,14 +95,17 @@ public class DataSourcePaginationControls extends BorderPane {
                     }
                     currentPage.set(page);
                     fetching.set(false);
+                    cf.complete(null);
                 });
             } catch (Exception e) {
                 e.printStackTrace(System.err);
                 Platform.runLater(() -> {
                     target.clear();
                     fetching.set(false);
+                    cf.complete(null);
                 });
             }
         });
+        return cf;
     }
 }