diff --git a/src/Main.java b/src/Main.java index 284cfad..3aec2f6 100644 --- a/src/Main.java +++ b/src/Main.java @@ -247,7 +247,7 @@ public class Main extends Application { contentArea.setCenter(goodsManagementView); } private void showCategoryManagementView() { - CategoryManagementView categoryManagementView = new CategoryManagementView(); + CategoryManagementView categoryManagementView = new CategoryManagementView(contentArea); contentArea.setCenter(categoryManagementView); } private void showOperationLogView() { diff --git a/src/model/DataManager.java b/src/model/DataManager.java index 9a110e0..e8689db 100644 --- a/src/model/DataManager.java +++ b/src/model/DataManager.java @@ -186,4 +186,11 @@ public class DataManager { }) .collect(Collectors.toList()); } + + public List getAllCategories() { + return goodsMap.values().stream() + .map(Goods::getCategory) + .distinct() + .collect(Collectors.toList()); + } } diff --git a/src/view/CategoryManagementView.java b/src/view/CategoryManagementView.java index 9ed7bb8..54fb5cd 100644 --- a/src/view/CategoryManagementView.java +++ b/src/view/CategoryManagementView.java @@ -2,55 +2,154 @@ package view; import javafx.collections.FXCollections; import javafx.collections.ObservableList; +import javafx.event.EventHandler; +import javafx.geometry.Insets; +import javafx.scene.control.Button; +import javafx.scene.control.Label; import javafx.scene.control.TreeItem; import javafx.scene.control.TreeView; +import javafx.scene.input.MouseEvent; import javafx.scene.layout.AnchorPane; +import javafx.scene.layout.BorderPane; +import javafx.scene.layout.VBox; import model.DataManager; import model.Goods; +import java.util.HashMap; +import java.util.Map; + public class CategoryManagementView extends AnchorPane { private TreeView categoryTreeView; + private BorderPane contentArea; + private Map goodsMap; // 用于快速查找商品 - public CategoryManagementView() { + public CategoryManagementView(BorderPane contentArea) { + this.contentArea = contentArea; initializeComponents(); loadCategoriesAndGoods(); } private void initializeComponents() { categoryTreeView = new TreeView<>(); - categoryTreeView.setShowRoot(false); // 不显示根节点 - AnchorPane.setTopAnchor(categoryTreeView, 10.0); - AnchorPane.setRightAnchor(categoryTreeView, 10.0); - AnchorPane.setBottomAnchor(categoryTreeView, 10.0); - AnchorPane.setLeftAnchor(categoryTreeView, 10.0); + categoryTreeView.setShowRoot(false); // 隐藏根节点 + AnchorPane.setTopAnchor(categoryTreeView, 0.0); + AnchorPane.setBottomAnchor(categoryTreeView, 0.0); + AnchorPane.setLeftAnchor(categoryTreeView, 0.0); + AnchorPane.setRightAnchor(categoryTreeView, 0.0); this.getChildren().add(categoryTreeView); } private void loadCategoriesAndGoods() { DataManager dataManager = DataManager.getInstance(); ObservableList allGoods = FXCollections.observableArrayList(dataManager.getAllGoods()); + ObservableList categories = FXCollections.observableArrayList(dataManager.getAllCategories()); - // 获取所有分类 - ObservableList categories = FXCollections.observableArrayList(allGoods.stream() - .map(Goods::getCategory) - .distinct() - .toArray(String[]::new)); + // 对商品按照价格进行排序 + allGoods.sort((g1, g2) -> Double.compare(g1.getPrice(), g2.getPrice())); // 构建树结构 - TreeItem root = new TreeItem<>(); - for (String category : categories) { - TreeItem categoryItem = new TreeItem<>(category); - for (Goods goods : allGoods) { - if (goods.getCategory().equals(category)) { - TreeItem goodsItem = new TreeItem<>(goods.getName() + " (" + goods.getSpecification() + ")"); - categoryItem.getChildren().add(goodsItem); + TreeItem root = new TreeItem<>("Root"); // 设置根节点 + + // 使用嵌套的 Map 结构来存储类别和价格区间 + Map>> categoryPriceRangeItems = new HashMap<>(); + goodsMap = new HashMap<>(); // 初始化商品映射 + + for (Goods goods : allGoods) { + String category = goods.getCategory(); + int price = (int) goods.getPrice(); + int rangeStart = (price / 1000) * 1000; + String priceRange = rangeStart + "-" + (rangeStart + 999); + + // 获取或创建类别分类 + Map> priceRangeItems = categoryPriceRangeItems.get(category); + if (priceRangeItems == null) { + priceRangeItems = new HashMap<>(); + categoryPriceRangeItems.put(category, priceRangeItems); + + // 创建类别节点并添加到根节点 + TreeItem categoryItem = new TreeItem<>(category); + root.getChildren().add(categoryItem); + } + + // 获取或创建价格区间分类 + TreeItem priceRangeItem = priceRangeItems.get(priceRange); + if (priceRangeItem == null) { + priceRangeItem = new TreeItem<>(priceRange); + priceRangeItems.put(priceRange, priceRangeItem); + + // 获取类别节点并添加价格区间节点 + TreeItem categoryItem = root.getChildren().stream() + .filter(item -> item.getValue().equals(category)) + .findFirst() + .orElse(null); + if (categoryItem != null) { + categoryItem.getChildren().add(priceRangeItem); } } - root.getChildren().add(categoryItem); + + // 获取库存和价格 + int stock = dataManager.getStock(goods.getId()); + // 构建显示文本 + String displayText = goods.getName() + " (" + goods.getSpecification() + ") - 库存: " + stock + " - 价格: " + price; + TreeItem goodsItem = new TreeItem<>(displayText); + priceRangeItem.getChildren().add(goodsItem); + + // 将商品存储到映射中以便快速查找 + goodsMap.put(displayText, goods); } categoryTreeView.setRoot(root); + + // 展开所有一级节点（类别） + for (TreeItem categoryItem : root.getChildren()) { + categoryItem.setExpanded(true); + } + + // 为 TreeView 添加鼠标点击事件监听器 + categoryTreeView.setOnMouseClicked(new EventHandler() { + @Override + public void handle(MouseEvent event) { + if (event.getClickCount() == 2) { // 双击事件 + TreeItem selectedItem = categoryTreeView.getSelectionModel().getSelectedItem(); + if (selectedItem != null && !selectedItem.isLeaf()) { + // 如果点击的是分类或价格区间，不显示详细信息 + return; + } + if (selectedItem != null) { + Goods selectedGoods = goodsMap.get(selectedItem.getValue()); + if (selectedGoods != null) { + showGoodsDetails(selectedGoods); + } + } + } + } + }); } + private void showGoodsDetails(Goods goods) { + // 创建一个 VBox 来显示商品详细信息 + VBox detailsBox = new VBox(10); + detailsBox.setPadding(new Insets(10)); + + Label nameLabel = new Label("名称: " + goods.getName()); + Label specificationLabel = new Label("规格: " + goods.getSpecification()); + Label categoryLabel = new Label("类别: " + goods.getCategory()); + Label priceLabel = new Label("价格: " + goods.getPrice()); + Label stockLabel = new Label("库存: " + DataManager.getInstance().getStock(goods.getId())); + + detailsBox.getChildren().addAll(nameLabel, specificationLabel, categoryLabel, priceLabel, stockLabel); + + // 添加返回按钮 + Button backButton = new Button("返回"); + backButton.setOnAction(event -> { + // 清空 contentArea 并重新加载分类视图 + contentArea.setCenter(categoryTreeView); // 重新显示分类视图 + }); + + detailsBox.getChildren().add(backButton); // 将返回按钮添加到最后 + + // 将详细信息显示在 contentArea 中 + contentArea.setCenter(detailsBox); + } } diff --git a/uml.iml b/uml.iml index 5fe4c4e..5f2106e 100644 --- a/uml.iml +++ b/uml.iml @@ -7,7 +7,17 @@ - - + + + + + + + + + + + + \ No newline at end of file