Added historical balance checker and cleaned up actions layout on account page.

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

@@ -2,17 +2,25 @@ package com.andrewlalis.perfin.control;
 
 import com.andrewlalis.javafx_scene_router.RouteSelectionListener;
 import com.andrewlalis.perfin.data.AccountRepository;
+import com.andrewlalis.perfin.data.util.CurrencyUtil;
 import com.andrewlalis.perfin.data.util.DateUtil;
 import com.andrewlalis.perfin.model.Account;
+import com.andrewlalis.perfin.model.MoneyValue;
 import com.andrewlalis.perfin.model.Profile;
 import com.andrewlalis.perfin.view.component.AccountHistoryView;
+import com.andrewlalis.perfin.view.component.validation.ValidationApplier;
+import com.andrewlalis.perfin.view.component.validation.validators.PredicateValidator;
+import javafx.application.Platform;
 import javafx.beans.binding.BooleanExpression;
 import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.SimpleBooleanProperty;
 import javafx.fxml.FXML;
 import javafx.scene.control.Button;
+import javafx.scene.control.DatePicker;
 import javafx.scene.control.Label;
-import javafx.scene.layout.VBox;
+import javafx.scene.layout.HBox;
+
+import java.time.*;
 
 import static com.andrewlalis.perfin.PerfinApp.router;
 
@@ -30,10 +38,13 @@ public class AccountViewController implements RouteSelectionListener {
 
     @FXML public AccountHistoryView accountHistory;
 
-    @FXML public VBox actionsVBox;
+    @FXML public HBox actionsBox;
+
+    @FXML public DatePicker balanceCheckerDatePicker;
+    @FXML public Button balanceCheckerButton;
 
     @FXML public void initialize() {
-        actionsVBox.getChildren().forEach(node -> {
+        actionsBox.getChildren().forEach(node -> {
             Button button = (Button) node;
             BooleanExpression buttonActive = accountArchivedProperty;
             if (button.getText().equalsIgnoreCase("Unarchive")) {
@@ -43,6 +54,28 @@ public class AccountViewController implements RouteSelectionListener {
             button.managedProperty().bind(button.visibleProperty());
             button.visibleProperty().bind(button.disableProperty().not());
         });
+
+        var datePickerValid = new ValidationApplier<>(new PredicateValidator<LocalDate>()
+                .addPredicate(date -> date.isBefore(LocalDate.now()), "Date must be in the past.")
+        ).attach(balanceCheckerDatePicker, balanceCheckerDatePicker.valueProperty());
+        balanceCheckerButton.disableProperty().bind(datePickerValid.not());
+        balanceCheckerButton.setOnAction(event -> {
+            LocalDate date = balanceCheckerDatePicker.getValue();
+            final Instant timestamp = date.atStartOfDay(ZoneId.systemDefault())
+                    .withZoneSameInstant(ZoneOffset.UTC)
+                    .toInstant();
+            Profile.getCurrent().dataSource().mapRepoAsync(
+                    AccountRepository.class,
+                    repo -> repo.deriveBalance(account.id, timestamp)
+            ).thenAccept(balance -> Platform.runLater(() -> {
+                String msg = String.format(
+                        "Your balance as of %s is %s, according to Perfin's data.",
+                        date,
+                        CurrencyUtil.formatMoney(new MoneyValue(balance, account.getCurrency()))
+                );
+                Popups.message(balanceCheckerButton, msg);
+            }));
+        });
     }
 
     @Override

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

@@ -81,6 +81,7 @@ public class StyledText extends VBox {
             idx = 0;
             currentRun.setLength(0);
             currentParagraph = new TextFlow();
+            currentParagraph.setStyle("-fx-text-fill: inherit;");
 
             while (idx < text.length()) {
                 if (text.startsWith("**", idx)) {
@@ -118,6 +119,7 @@ public class StyledText extends VBox {
             int endIdx = text.indexOf(marker, idx + marker.length());
             Text textItem = new Text(text.substring(idx + marker.length(), endIdx));
             textItem.getStyleClass().add(styleClass);
+            textItem.setStyle("-fx-text-fill: inherit;");
             currentParagraph.getChildren().add(textItem);
             idx = endIdx + marker.length();
         }
@@ -183,6 +185,7 @@ public class StyledText extends VBox {
             if (!currentParagraph.getChildren().isEmpty()) {
                 flows.add(currentParagraph);
                 currentParagraph = new TextFlow();
+                currentParagraph.setStyle("-fx-text-fill: inherit;");
             }
         }
     }

src/main/resources/account-view.fxml

@@ -5,6 +5,8 @@
 <?import javafx.scene.control.*?>
 <?import javafx.scene.layout.*?>
 <?import javafx.scene.text.Text?>
+<?import com.andrewlalis.perfin.view.component.StyledText?>
+<?import javafx.scene.text.TextFlow?>
 <BorderPane
         xmlns="http://javafx.com/javafx"
         xmlns:fx="http://javafx.com/fxml"
@@ -16,10 +18,7 @@
     <center>
         <VBox>
             <!-- Main account properties and actions -->
-            <BorderPane>
+            <FlowPane styleClass="std-padding,std-spacing">
-                <center>
-                    <VBox styleClass="std-padding,std-spacing">
-                        <FlowPane>
                 <!-- Main account properties. -->
                 <PropertiesPane vgap="5" hgap="5">
                     <Label text="Name" styleClass="bold-text"/>
@@ -44,21 +43,35 @@
                     <Label fx:id="accountBalanceLabel" styleClass="mono-font"/>
                 </PropertiesPane>
             </FlowPane>
-                    </VBox>
+
-                </center>
+            <!-- Action buttons -->
-                <right>
+            <HBox fx:id="actionsBox" styleClass="std-padding,std-spacing,small-font">
+                <Button text="Edit" onAction="#goToEditPage"/>
+                <Button text="Record Balance" onAction="#goToCreateBalanceRecord"/>
+                <Button text="Archive" onAction="#archiveAccount"/>
+                <Button text="Delete" onAction="#deleteAccount"/>
+                <Button text="Unarchive" onAction="#unarchiveAccount"/>
+            </HBox>
+
+            <!-- Historical Balance Checker -->
             <VBox styleClass="std-padding,std-spacing">
-                        <Label text="Actions" styleClass="bold-text"/>
+                <HBox styleClass="std-spacing">
-                        <VBox fx:id="actionsVBox" styleClass="std-spacing">
+                    <AnchorPane>
-                            <Button text="Edit" onAction="#goToEditPage" maxWidth="Infinity"/>
+                        <Label text="Check Historical Balance" styleClass="bold-text" AnchorPane.topAnchor="0" AnchorPane.bottomAnchor="0" AnchorPane.leftAnchor="0"/>
-                            <Button text="Record Balance" onAction="#goToCreateBalanceRecord" maxWidth="Infinity"/>
+                    </AnchorPane>
-                            <Button text="Archive" onAction="#archiveAccount" maxWidth="Infinity"/>
+                    <DatePicker fx:id="balanceCheckerDatePicker"/>
-                            <Button text="Delete" onAction="#deleteAccount" maxWidth="Infinity"/>
+                    <Button text="Check" fx:id="balanceCheckerButton"/>
-                            <Button text="Unarchive" onAction="#unarchiveAccount" maxWidth="Infinity"/>
+                </HBox>
+                <TextFlow maxWidth="500">
+                    <Text styleClass="small-font,secondary-color-fill">
+                        Use this tool to check the balance of this account on any
+                        given day in the past. Perfin will compute the balance
+                        according to any balance records and transactions it finds
+                        around that time.
+                    </Text>
+                </TextFlow>
             </VBox>
-                    </VBox>
+
-                </right>
-            </BorderPane>
 
             <!-- Account history -->
             <VBox VBox.vgrow="ALWAYS">