Add FilterCustomerDescriptor

docs/DeveloperGuide.md

@@ -159,7 +159,7 @@ This section describes some noteworthy details on how certain features are imple
 
 #### Motivation
 The property agent may want to edit the details of a customer or property after adding it to the application. For example, the property agent may want to change the budget range of a customer after adding it to PropertyMatch.
-Or, the property agent may want to change the price of a property after adding it to PropertyMatch.
+Or, the property agent may want to change the budget of a property after adding it to PropertyMatch.
 
 #### Implementation
 The `EditCustomerCommand` and `EditPropertyCommand` classes extends the `Command` class. They are used to edit the details of a customer or property, respectively.
@@ -301,17 +301,17 @@ The following sequence diagram shows how the `FilterCustomerCommand` is executed
 [Back to top](#table-of-contents)
 
 #### Motivation
-The property agent may want to see a list of properties based on their budget. For example, the property agent may want to filter properties with price less than $1000000.
+The property agent may want to see a list of properties based on their budget. For example, the property agent may want to filter properties with budget less than $1000000.
 Or, the property agent may want to see a list of properties based on the characteristics. For example, the property agent may want to filter pink properties.
-Or, the property agent may want to see a list of properties based on both price and characteristics to enhance productivity.
+Or, the property agent may want to see a list of properties based on both budget and characteristics to enhance productivity.
 
 #### Implementation
 The `FilterPropertyCommand` class extends the `Command` class. They are used to filter properties.
-The command allows the user to filter properties based on their price and/or characteristics. The commands expect at least one flag, either price or characteristics, to be used as a filter.
+The command allows the user to filter properties based on their budget and/or characteristics. The commands expect at least one flag, either budget or characteristics, to be used as a filter.
 When the filter command is inputted, the `FilterPropertyCommandParser` class is used to parse the user input and create the respective `FilterPropertyCommand` objects.
 When these created command objects are executed by the `LogicManager`, the `FilterPropertyCommand#execute(Model model)` methods are called. These methods will update the filtered property list in the `model` which will eventually update the properties shown in the UI, and return a `CommandResult` object.
 
-During this execution process, a new `PriceAndTagsInRangePredicate` object which is used as a predicate to check whether a property's price is lower and if the property has all the characteristics.
+During this execution process, a new `PriceAndTagsInRangePredicate` object which is used as a predicate to check whether a property's budget is lower and if the property has all the characteristics.
 All properties will be tested using this `PriceAndTagsInRangePredicate`. Properties which satisfy this condition will be included into the `FilteredPropertyList` in the model.
 
 #### Design Considerations
@@ -576,7 +576,7 @@ System: PropertyMatch address book
 
 Actor: Property Agent
 
-1. Property agent fills in name, address, characteristics, number, price of property
+1. Property agent fills in name, address, characteristics, number, budget of property
 2. Property agent adds property to address book
 
 **Use Case: UC02 - Add customer**

docs/UserGuide.md

@@ -67,14 +67,14 @@ PropertyMatch is a desktop application for property agents who want to organise
 
 Adds a property to the application.
 
-Format: `addprop n/NAME a/ADDRESS [c/CHARACTERISTIC] ph/number pr/price`
+Format: `addprop n/NAME a/ADDRESS [c/CHARACTERISTIC] ph/number pr/budget`
 
 Parameter:
 * `n/NAME`				         : The propName of the property (String)
 * `a/ADDRESS`		             : The propAddress of the property (String)
 * `c/CHARACTERISTIC` (Optional)  : The characteristics of the property (String)
 * `ph/NUMBER`                    : The contact number (Integer)
-* `pr/PRICE`                     : The price of the property in psf (Number)
+* `pr/PRICE`                     : The budget of the property in psf (Number)
 
 
 Examples:
@@ -89,7 +89,7 @@ When command fails:
 * `Missing propName parameter for add properties command` for missing propName parameter
 * `Missing propAddress parameter for add properties command` for missing propAddress parameter
 * `Missing number parameter for add properties command` for missing propName parameter
-* `Missing price parameter for add properties command` for missing price parameter
+* `Missing budget parameter for add properties command` for missing budget parameter
 * `Invalid Command` for mispelling of command
 
 ### Adding a customer: `addcust`
@@ -278,7 +278,7 @@ When command fails:
 Format: `filtercust [pr/PRICE] [c/CHARACTERISTIC]…​`
 
 Parameter:
-* `pr/PRICE` (optional)          : The price of the property (Integer)
+* `pr/PRICE` (optional)          : The budget of the property (Integer)
 * `c/CHARACTERISTIC` (optional)  : The characteristics of the property (String)
 
 Notes:
@@ -340,7 +340,7 @@ When command fails: Invalid command for misspelling of command
 
 | Action       | Format, Examples                                                                                                                                            |
 |--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------------|
-| **Addprop**  | `addprop n/NAME a/ADDRESS [c/CHARACTERISTIC] ph/number pr/price` <br> e.g., `addprop n/Property a/randomAddress c/bright;sunny;big;square ph/91135235 pr/5` |
+| **Addprop**  | `addprop n/NAME a/ADDRESS [c/CHARACTERISTIC] ph/number pr/budget` <br> e.g., `addprop n/Property a/randomAddress c/bright;sunny;big;square ph/91135235 pr/5` |
 | **Addcust**  | `addcust n/NAME p/PHONE e/EMAIL [b/BUDGET] [c/CHARACTERISTIC]` <br> e.g., `addcust n/Fredy p/12345678 e/[email protected] b/100000`                   |
 | **Delprop**  | `delprop INDEX`<br> e.g., `delprop 3`                                                                                                                       |
 | **Delcust**  | `delcust INDEX`<br> e.g., `delcust 3`                                                                                                                       |

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

@@ -4,11 +4,20 @@
 import static seedu.address.logic.parser.CliSyntax.PREFIX_BUDGET;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
 
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Optional;
+import java.util.Set;
+
+import seedu.address.commons.util.CollectionUtil;
 import seedu.address.commons.util.ToStringBuilder;
 import seedu.address.logic.Messages;
 import seedu.address.logic.commands.exceptions.CommandException;
 import seedu.address.model.Model;
+import seedu.address.model.customer.Budget;
 import seedu.address.model.customer.BudgetAndTagsInRangePredicate;
+import seedu.address.model.tag.Tag;
 
 /**
  * Filter all customers in the address book to the user based on specific tags and/or budget.
@@ -63,4 +72,82 @@ public String toString() {
                 .add("predicate", predicate)
                 .toString();
     }
+
+    /**
+     * Stores the details to filter the customer with budget and tags.
+     */
+    public static class FilterCustomerDescriptor {
+        private Budget budget;
+        private Set<Tag> tags;
+
+        public FilterCustomerDescriptor() {}
+
+        /**
+         * Copy constructor.
+         * A defensive copy of {@code tags} is used internally.
+         */
+        public FilterCustomerDescriptor(FilterCustomerDescriptor toCopy) {
+            setBudget(toCopy.budget);
+            setTags(toCopy.tags);
+        }
+
+        /**
+         * Returns true if at least one field is edited.
+         */
+        public boolean isAnyFieldFiltered() {
+            return CollectionUtil.isAnyNonNull(budget, tags);
+        }
+
+        public void setBudget(Budget budget) {
+            this.budget = budget;
+        }
+
+        public Optional<Budget> getBudget() {
+            return Optional.ofNullable(budget);
+        }
+
+        /**
+         * Sets {@code tags} to this object's {@code tags}.
+         * A defensive copy of {@code tags} is used internally.
+         */
+        public void setTags(Set<Tag> tags) {
+            this.tags = (tags != null) ? new HashSet<>(tags) : null;
+        }
+
+        /**
+         * Returns an unmodifiable tag set, which throws {@code UnsupportedOperationException}
+         * if modification is attempted.
+         * Returns {@code Optional#empty()} if {@code tags} is null.
+         */
+        public Optional<Set<Tag>> getTags() {
+            return (tags != null) ? Optional.of(Collections.unmodifiableSet(tags)) : Optional.empty();
+        }
+
+        public BudgetAndTagsInRangePredicate getPredicate() {
+            return new BudgetAndTagsInRangePredicate(budget, tags);
+        }
+        @Override
+        public boolean equals(Object other) {
+            if (other == this) {
+                return true;
+            }
+
+            // instanceof handles nulls
+            if (!(other instanceof FilterCustomerDescriptor)) {
+                return false;
+            }
+
+            FilterCustomerDescriptor otherFilterPropertyDescriptor = (FilterCustomerDescriptor) other;
+            return Objects.equals(budget, otherFilterPropertyDescriptor.budget)
+                    && Objects.equals(tags, otherFilterPropertyDescriptor.tags);
+        }
+
+        @Override
+        public String toString() {
+            return new ToStringBuilder(this)
+                    .add("budget", budget)
+                    .add("tags", tags)
+                    .toString();
+        }
+    }
 }

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

@@ -77,8 +77,8 @@ public String toString() {
      * Stores the details to filter the property with price and tags.
      */
     public static class FilterPropertyDescriptor {
-        private Price price = null;
-        private Set<Tag> tags = null;
+        private Price price;
+        private Set<Tag> tags;
 
         public FilterPropertyDescriptor() {}
 

src/main/java/seedu/address/logic/parser/FilterCustomerCommandParser.java

@@ -1,18 +1,13 @@
 package seedu.address.logic.parser;
 
-import static java.util.Objects.isNull;
 import static java.util.Objects.requireNonNull;
 import static seedu.address.logic.Messages.MESSAGE_INVALID_COMMAND_FORMAT;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_BUDGET;
 import static seedu.address.logic.parser.CliSyntax.PREFIX_TAG;
 
-import java.util.Set;
-
 import seedu.address.logic.commands.FilterCustomerCommand;
+import seedu.address.logic.commands.FilterCustomerCommand.FilterCustomerDescriptor;
 import seedu.address.logic.parser.exceptions.ParseException;
-import seedu.address.model.customer.Budget;
-import seedu.address.model.customer.BudgetAndTagsInRangePredicate;
-import seedu.address.model.tag.Tag;
 
 /**
  * Filters and lists all customers in address book whose budget and/or tags are selected.
@@ -26,24 +21,25 @@ public class FilterCustomerCommandParser implements Parser<FilterCustomerCommand
      */
     public FilterCustomerCommand parse(String args) throws ParseException {
         requireNonNull(args);
-        Budget budget = null;
-        Set<Tag> tags;
+        FilterCustomerDescriptor descriptor = new FilterCustomerDescriptor();
         ArgumentMultimap argMultimap =
                 ArgumentTokenizer.tokenize(args, PREFIX_BUDGET, PREFIX_TAG);
 
         argMultimap.verifyNoDuplicatePrefixesFor(PREFIX_BUDGET);
         if (argMultimap.getValue(PREFIX_BUDGET).isPresent()) {
-            budget = ParserUtil.parseBudget(argMultimap.getValue(PREFIX_BUDGET).get());
+            descriptor.setBudget(ParserUtil.parseBudget(argMultimap.getValue(PREFIX_BUDGET).get()));
         }
 
-        tags = ParserUtil.parseTags(argMultimap.getAllValues(PREFIX_TAG));
+        if (argMultimap.getValue(PREFIX_TAG).isPresent()) {
+            descriptor.setTags(ParserUtil.parseTags(argMultimap.getAllValues(PREFIX_TAG)));
+        }
 
-        if (isNull(budget) && tags.isEmpty()) {
+        if (!descriptor.isAnyFieldFiltered()) {
             throw new ParseException(String.format(MESSAGE_INVALID_COMMAND_FORMAT,
                     FilterCustomerCommand.MESSAGE_USAGE));
         }
 
-        return new FilterCustomerCommand(new BudgetAndTagsInRangePredicate(budget, tags));
+        return new FilterCustomerCommand(descriptor.getPredicate());
     }
 
 }

src/main/resources/view/PropertyListCard.fxml

@@ -30,7 +30,7 @@
       <FlowPane fx:id="tags" />
       <Label fx:id="phone" styleClass="cell_small_label" text="\$propPhone" />
       <Label fx:id="address" styleClass="cell_small_label" text="\$propAddress" />
-      <Label fx:id="price" styleClass="cell_small_label" text="\$price" />
+      <Label fx:id="budget" styleClass="cell_small_label" text="\$budget" />
     </VBox>
   </GridPane>
 </HBox>