Refactor GUI-related code

src/main/java/seedu/address/logic/Logic.java

@@ -2,7 +2,6 @@
 
 import java.nio.file.Path;
 
-import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ObjectProperty;
 import javafx.collections.ObservableList;
 import seedu.address.commons.core.GuiSettings;
@@ -13,6 +12,7 @@
 import seedu.address.model.analytics.DashboardData;
 import seedu.address.model.person.Loan;
 import seedu.address.model.person.Person;
+import seedu.address.model.tabindicator.TabIndicator;
 
 /**
  * API of the Logic component
@@ -57,17 +57,7 @@ public interface Logic {
 
     ObservableList<Loan> getSortedLoanList();
 
-    void setIsLoansTab(boolean isLoansTab);
-
-    BooleanProperty getIsLoansTab();
-
-    void setIsAnalyticsTab(boolean isAnalyticsTab);
-
-    BooleanProperty getIsAnalyticsTab();
-
     ObjectProperty<DashboardData> getAnalytics();
 
-    BooleanProperty getIsPersonTab();
-
-    BooleanProperty getLoaneeInfoFlag();
+    ObjectProperty<TabIndicator> getTabIndicator();
 }

src/main/java/seedu/address/logic/LogicManager.java

@@ -5,7 +5,6 @@
 import java.nio.file.Path;
 import java.util.logging.Logger;
 
-import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ObjectProperty;
 import javafx.collections.ObservableList;
 import seedu.address.commons.core.GuiSettings;
@@ -20,8 +19,10 @@
 import seedu.address.model.analytics.DashboardData;
 import seedu.address.model.person.Loan;
 import seedu.address.model.person.Person;
+import seedu.address.model.tabindicator.TabIndicator;
 import seedu.address.storage.Storage;
 
+
 /**
  * The main LogicManager of the app.
  */
@@ -95,38 +96,13 @@ public ObservableList<Loan> getSortedLoanList() {
         return model.getSortedLoanList();
     }
 
-    @Override
-    public void setIsLoansTab(boolean isLoansTab) {
-        model.setIsLoansTab(isLoansTab);
-    }
-
-    @Override
-    public BooleanProperty getIsLoansTab() {
-        return model.getIsLoansTab();
-    }
-
     @Override
     public ObjectProperty<DashboardData> getAnalytics() {
         return model.getDashboardData();
     }
 
     @Override
-    public BooleanProperty getIsAnalyticsTab() {
-        return model.getIsAnalyticsTab();
-    }
-
-    @Override
-    public void setIsAnalyticsTab(boolean isAnalyticsTab) {
-        model.setIsAnalyticsTab(isAnalyticsTab);
-    }
-
-    @Override
-    public BooleanProperty getIsPersonTab() {
-        return model.getIsPersonTab();
-    }
-
-    @Override
-    public BooleanProperty getLoaneeInfoFlag() {
-        return model.getLoaneeInfoFlag();
+    public ObjectProperty<TabIndicator> getTabIndicator() {
+        return model.getTabIndicator();
     }
 }

src/main/java/seedu/address/logic/commands/EditCommand.java

@@ -83,7 +83,7 @@ public CommandResult execute(Model model) throws CommandException {
         }
 
         model.setPerson(personToEdit, editedPerson);
-        if (model.getIsLoansTab().get()) {
+        if (model.getTabIndicator().getValue().getIsLoansTab()) {
             model.updateFilteredPersonList(person -> person.isSamePerson(editedPerson));
             model.updateFilteredLoanList(loan -> loan.isAssignedTo(editedPerson));
         }
@@ -141,7 +141,8 @@ public static class EditPersonDescriptor {
         private Address address;
         private Set<Tag> tags;
 
-        public EditPersonDescriptor() {}
+        public EditPersonDescriptor() {
+        }
 
         /**
          * Copy constructor.

src/main/java/seedu/address/logic/commands/ViewLoanCommand.java

@@ -47,7 +47,7 @@ public CommandResult execute(Model model) throws CommandException {
         model.updateFilteredPersonList(person -> person.equals(personToShowLoan));
         model.updateFilteredLoanList(loan -> loan.isAssignedTo(personToShowLoan), isShowAllLoans);
         model.setDualPanel();
-        model.setLoaneeInfoFlag(false);
+        model.setIsShowLoaneeInfo(false);
         return new CommandResult(String.format(MESSAGE_SUCCESS, Messages.format(personToShowLoan)),
                 false, false, true);
     }

src/main/java/seedu/address/logic/commands/ViewLoansCommand.java

@@ -23,7 +23,7 @@ public CommandResult execute(Model model) {
         model.updateFilteredPersonList(PREDICATE_SHOW_NO_PERSONS);
         model.updateFilteredLoanList(unused -> true, isShowAllLoans);
         model.setIsLoansTab(true);
-        model.setLoaneeInfoFlag(true);
+        model.setIsShowLoaneeInfo(true);
         return new CommandResult(MESSAGE_SUCCESS, false, false, true);
     }
 }

src/main/java/seedu/address/model/Model.java

@@ -1,10 +1,8 @@
 package seedu.address.model;
 
 import java.nio.file.Path;
-import java.util.List;
 import java.util.function.Predicate;
 
-import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ObjectProperty;
 import javafx.collections.ObservableList;
 import seedu.address.commons.core.GuiSettings;
@@ -13,6 +11,7 @@
 import seedu.address.model.person.Analytics;
 import seedu.address.model.person.Loan;
 import seedu.address.model.person.Person;
+import seedu.address.model.tabindicator.TabIndicator;
 
 /**
  * The API of the Model component.
@@ -159,14 +158,18 @@ public interface Model {
      */
     void updateFilteredLoanList(Predicate<Loan> predicate, boolean isShowAllLoans);
 
-    void setLoanList(List<Loan> loanList);
-
-    BooleanProperty getIsLoansTab();
-
+    /**
+     * Sets the tab to the loans tab.
+     *
+     * @param isLoansTab
+     */
     void setIsLoansTab(Boolean isLoansTab);
 
-    BooleanProperty getIsAnalyticsTab();
-
+    /**
+     * Sets the tab to the analytics tab.
+     *
+     * @param isAnalyticsTab
+     */
     void setIsAnalyticsTab(Boolean isAnalyticsTab);
 
     void setToPersonTab();
@@ -179,13 +182,9 @@ public interface Model {
 
     ObjectProperty<DashboardData> getDashboardData();
 
-    BooleanProperty getIsPersonTab();
-
-    void setIsPersonTab(Boolean isPersonTab);
-
     void setDualPanel();
 
-    BooleanProperty getLoaneeInfoFlag();
+    void setIsShowLoaneeInfo(Boolean isShowLoaneeInfo);
 
-    void setLoaneeInfoFlag(Boolean loaneeInfoFlag);
+    ObjectProperty<TabIndicator> getTabIndicator();
 }

src/main/java/seedu/address/model/ModelManager.java

@@ -6,13 +6,10 @@
 import java.math.BigDecimal;
 import java.nio.file.Path;
 import java.util.Date;
-import java.util.List;
 import java.util.function.Predicate;
 import java.util.logging.Logger;
 
-import javafx.beans.property.BooleanProperty;
 import javafx.beans.property.ObjectProperty;
-import javafx.beans.property.SimpleBooleanProperty;
 import javafx.beans.property.SimpleObjectProperty;
 import javafx.collections.ObservableList;
 import javafx.collections.transformation.FilteredList;
@@ -24,6 +21,7 @@
 import seedu.address.model.person.Analytics;
 import seedu.address.model.person.Loan;
 import seedu.address.model.person.Person;
+import seedu.address.model.tabindicator.TabIndicator;
 
 /**
  * Represents the in-memory model of the address book data.
@@ -36,11 +34,8 @@ public class ModelManager implements Model {
     private final FilteredList<Person> filteredPersons;
     private final FilteredList<Loan> filteredLoans;
     private final SortedList<Loan> sortedLoans;
-    private final BooleanProperty isLoansTab = new SimpleBooleanProperty(false);
-    private final BooleanProperty isAnalyticsTab = new SimpleBooleanProperty(false);
-    private final BooleanProperty isPersonTab = new SimpleBooleanProperty(false);
-    private final BooleanProperty isShowAllLoans = new SimpleBooleanProperty(false);
-    private final BooleanProperty loaneeInfoFlag = new SimpleBooleanProperty(true);
+    private final ObjectProperty<TabIndicator> tabIndicator = new SimpleObjectProperty<>(new TabIndicator(false,
+            false, true, false, false));
 
     private final ObjectProperty<DashboardData> dashboardData = new SimpleObjectProperty<>();
 
@@ -192,14 +187,15 @@ public ObservableList<Loan> getSortedLoanList() {
     public void updateFilteredLoanList(Predicate<Loan> predicate) {
         requireNonNull(predicate);
         Predicate<Loan> secondPredicate =
-                isShowAllLoans.get() ? PREDICATE_SHOW_ALL_LOANS : PREDICATE_SHOW_ALL_ACTIVE_LOANS;
+                this.tabIndicator.getValue().getIsShowAllLoans() ? PREDICATE_SHOW_ALL_LOANS
+                        : PREDICATE_SHOW_ALL_ACTIVE_LOANS;
         filteredLoans.setPredicate(predicate.and(secondPredicate));
     }
 
     @Override
     public void updateFilteredLoanList(Predicate<Loan> predicate, boolean isShowAllLoans) {
         requireNonNull(predicate);
-        this.isShowAllLoans.setValue(isShowAllLoans);
+        this.tabIndicator.setValue(this.tabIndicator.getValue().setIsShowAllLoans(isShowAllLoans));
         updateFilteredLoanList(predicate);
     }
 
@@ -221,50 +217,25 @@ public boolean equals(Object other) {
                 && sortedLoans.equals(otherModelManager.sortedLoans);
     }
 
-    @Override
-    public void setLoanList(List<Loan> loanList) {
-        filteredLoans.clear();
-        filteredLoans.setAll(loanList);
-    }
-
-    @Override
-    public BooleanProperty getIsLoansTab() {
-        return this.isLoansTab;
-    }
-
     @Override
     public void setIsLoansTab(Boolean isLoansTab) {
-        System.out.println("Method setIsLoansTab called inside ModelManager");
-        if (isLoansTab) {
-            this.isAnalyticsTab.setValue(false);
-            this.isPersonTab.setValue(false);
-        }
-        this.isLoansTab.setValue(isLoansTab);
+        this.tabIndicator.setValue(this.tabIndicator.getValue().setIsLoansTab(isLoansTab));
     }
 
-    @Override
-    public BooleanProperty getIsAnalyticsTab() {
-        return this.isAnalyticsTab;
-    }
 
     @Override
     public void setToPersonTab() {
-        System.out.println("Method setToPersonTab called inside ModelManager");
-        this.isLoansTab.setValue(false);
-        this.isAnalyticsTab.setValue(false);
         this.updateFilteredLoanList(PREDICATE_SHOW_NO_LOANS);
-        this.setIsPersonTab(true);
+        this.tabIndicator.setValue(this.tabIndicator.getValue().setIsPersonTab(true));
     }
 
     @Override
     public void setIsAnalyticsTab(Boolean isAnalyticsTab) {
         if (isAnalyticsTab) {
-            this.isLoansTab.setValue(false);
-            this.isPersonTab.setValue(false);
             this.updateFilteredPersonList(PREDICATE_SHOW_NO_PERSONS);
             this.updateFilteredLoanList(PREDICATE_SHOW_NO_LOANS);
         }
-        this.isAnalyticsTab.setValue(isAnalyticsTab);
+        this.tabIndicator.setValue(this.tabIndicator.getValue().setIsAnalyticsTab(isAnalyticsTab));
     }
 
     @Override
@@ -279,36 +250,18 @@ public void generateDashboardData(Analytics analytics) {
         dashboardData.setValue(new DashboardData(analytics, impactBenchmark, urgencyBenchmark));
     }
 
-    @Override
-    public BooleanProperty getIsPersonTab() {
-        return this.isPersonTab;
-    }
-
-    @Override
-    public void setIsPersonTab(Boolean isPersonTab) {
-        System.out.println("Method setIsPersonTab called inside ModelManager");
-        if (isPersonTab) {
-            this.isLoansTab.setValue(false);
-            this.isAnalyticsTab.setValue(false);
-        }
-        this.isPersonTab.setValue(isPersonTab);
-    }
-
     @Override
     public void setDualPanel() {
-        System.out.println("Method setDualPanel called inside ModelManager");
-        this.isLoansTab.setValue(true);
-        this.isPersonTab.setValue(true);
-        this.isAnalyticsTab.setValue(false);
+        this.tabIndicator.setValue(this.tabIndicator.getValue().setDualPanelView());
     }
 
     @Override
-    public BooleanProperty getLoaneeInfoFlag() {
-        return this.loaneeInfoFlag;
+    public void setIsShowLoaneeInfo(Boolean isShowLoaneeInfo) {
+        this.tabIndicator.setValue(this.tabIndicator.getValue().setIsShowLoaneeInfo(isShowLoaneeInfo));
     }
 
     @Override
-    public void setLoaneeInfoFlag(Boolean loaneeInfoFlag) {
-        this.loaneeInfoFlag.setValue(loaneeInfoFlag);
+    public ObjectProperty<TabIndicator> getTabIndicator() {
+        return this.tabIndicator;
     }
 }

src/main/java/seedu/address/model/analytics/DashboardData.java

@@ -63,7 +63,7 @@ public BigDecimal getImpactIndex() {
      * @return urgency index between 0 and 1
      */
     public Float getUrgencyIndex() {
-        // Should take extra measures to ensure no overdue loans are used for calculations
+        // both variables can be null if the lists are empty
         if (analytics.getEarliestReturnDate() == null || earliestReturnDate == null) {
             return null;
         }