下拉框控件

src/main/java/com/fanruan/api/design/ui/component/UIComboBox.java

@@ -1,6 +1,15 @@
 package com.fanruan.api.design.ui.component;
 
+import com.fanruan.api.util.AssistKit;
+import com.fr.design.gui.itextfield.UITextField;
+import com.fr.stable.Constants;
+import com.fr.stable.StringUtils;
+
 import javax.swing.*;
+import javax.swing.plaf.basic.BasicComboBoxEditor;
+import java.awt.*;
+import java.awt.event.ActionListener;
+import java.lang.reflect.Method;
 import java.util.List;
 import java.util.Vector;
 
@@ -30,6 +39,7 @@ public class UIComboBox<T> extends com.fr.design.gui.icombobox.UIComboBox {
 
     /**
      * 重新设置下拉选项
+     *
      * @param list 下拉选项的集合
      */
     public void refreshSelectableItems(List<T> list) {
@@ -40,4 +50,66 @@ public class UIComboBox<T> extends com.fr.design.gui.icombobox.UIComboBox {
         }
         getModel().setSelectedItem(el);
     }
+
+    public static class UIComboBoxEditor extends BasicComboBoxEditor {
+        protected UITextField textField;
+        private Object oldValue;
+
+        public UIComboBoxEditor() {
+            textField = new UITextField();
+            textField.setRectDirection(Constants.RIGHT);
+        }
+
+        @Override
+        public Component getEditorComponent() {
+            return textField;
+        }
+
+        @Override
+        public void setItem(Object anObject) {
+            if (anObject != null) {
+                textField.setText(anObject.toString());
+                oldValue = anObject;
+            } else {
+                textField.setText(StringUtils.EMPTY);
+            }
+
+        }
+
+        @Override
+        public Object getItem() {
+            Object newValue = textField.getText();
+            if (oldValue != null && !(oldValue instanceof String)) {
+                if (AssistKit.equals(newValue, oldValue.toString())) {
+                    return oldValue;
+                } else {
+                    Class cls = oldValue.getClass();
+                    try {
+                        Method method = cls.getMethod("valueOf", new Class[]{String.class});
+                        newValue = method.invoke(oldValue, new Object[]{textField.getText()});
+                    } catch (Exception ignore) {
+
+                    }
+                }
+            }
+            return newValue;
+
+        }
+
+        @Override
+        public void selectAll() {
+            textField.selectAll();
+            textField.requestFocus();
+        }
+
+        @Override
+        public void addActionListener(ActionListener l) {
+            textField.addActionListener(l);
+        }
+
+        @Override
+        public void removeActionListener(ActionListener l) {
+            textField.removeActionListener(l);
+        }
+    }
 }

src/main/java/com/fanruan/api/design/ui/component/UILazyComboBox.java

@@ -0,0 +1,191 @@
+package com.fanruan.api.design.ui.component;
+
+
+import com.fanruan.api.design.DesignKit;
+import com.fanruan.api.log.LogKit;
+import com.fanruan.api.util.StringKit;
+
+import javax.swing.*;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import javax.swing.event.PopupMenuEvent;
+import javax.swing.event.PopupMenuListener;
+import java.awt.*;
+import java.util.concurrent.ExecutionException;
+
+/**
+ * @author richie
+ * @version 10.0
+ * Created by richie on 2019-08-28
+ * 懒加载下拉框，点击下拉之后才开始加载数据
+ */
+public abstract class UILazyComboBox<T> extends UIComboBox<T> implements PopupMenuListener {
+
+    private static final int NUM = 80;
+    private static final String[] PENDING_CONTENT = new String[]{StringKit.EMPTY, DesignKit.i18nText("Fine-Design_Basic_Loading") + "..."};
+
+    /**
+     * 是否加载完成
+     */
+    protected boolean loaded = false;
+
+    /**
+     * 初始化选项
+     */
+    private Object initialSelected = null;
+
+
+    protected UILazyComboBox() {
+        super();
+        this.setEditor(new UILazyComboBox.FilterComboBoxEditor());
+        addPopupMenuListener(this);
+    }
+
+    public void setLoaded(boolean loaded) {
+        this.loaded = loaded;
+    }
+
+    /**
+     * 加载下拉框中的选项
+     *
+     * @return 下拉框中的选项
+     */
+    public abstract Object[] load();
+
+    @Override
+    public void setSelectedItem(Object anObject) {
+        initialSelected = anObject;
+        if (loaded) {
+            super.setSelectedItem(anObject);
+        } else {
+            this.setModel(new DefaultComboBoxModel<>(new Object[]{anObject}));
+            super.setSelectedItem(anObject);
+        }
+    }
+
+    @Override
+    public void popupMenuWillBecomeVisible(PopupMenuEvent e) {
+        if (loaded) {
+            return;
+        }
+        DefaultComboBoxModel<String> loadingModel = new DefaultComboBoxModel<>(PENDING_CONTENT);
+        this.setModel(loadingModel);
+        new SwingWorker<Object[], Void>() {
+
+            @Override
+            protected Object[] doInBackground() {
+                return load();
+            }
+
+            @Override
+            public void done() {
+                try {
+                    UILazyComboBox.this.loadList(get());
+                } catch (InterruptedException | ExecutionException exception) {
+                    LogKit.debug(exception.getMessage());
+                }
+                UILazyComboBox.this.showPopup();
+            }
+        }.execute();
+    }
+
+
+    /**
+     * 加载下拉列表
+     */
+    public void loadList() {
+        DefaultComboBoxModel<Object> model = new DefaultComboBoxModel<>(load());
+        model.setSelectedItem(initialSelected);
+        this.setModel(model);
+        this.selectedItemReminder = initialSelected;
+        loaded = true;
+    }
+
+    /**
+     * 加载下拉列表
+     *
+     * @param contents 下拉列表内容
+     */
+    private void loadList(Object[] contents) {
+        DefaultComboBoxModel<Object> model = new DefaultComboBoxModel<>(contents);
+        model.setSelectedItem(initialSelected);
+        this.setModel(model);
+        this.selectedItemReminder = initialSelected;
+        loaded = true;
+    }
+
+    @Override
+    public void popupMenuWillBecomeInvisible(PopupMenuEvent e) {
+
+    }
+
+    @Override
+    public void popupMenuCanceled(PopupMenuEvent e) {
+
+    }
+
+    @Override
+    public Dimension getPreferredSize() {
+        Dimension dim = super.getPreferredSize();
+        dim.width = NUM;
+        return dim;
+    }
+
+    class FilterComboBoxEditor extends UIComboBoxEditor implements DocumentListener {
+        private Object item;
+        private volatile boolean filtering = false;
+        private volatile boolean setting = false;
+
+        public FilterComboBoxEditor() {
+            super();
+            textField.getDocument().addDocumentListener(this);
+        }
+
+        @Override
+        public void setItem(Object item) {
+            if (filtering) {
+                return;
+            }
+            this.item = item;
+            this.setting = true;
+            textField.setSetting(true);
+            String newText = (item == null) ? "" : item.toString();
+            textField.setText(newText);
+            textField.setSetting(false);
+            this.setting = false;
+        }
+
+        @Override
+        public Object getItem() {
+            return this.item;
+        }
+
+        @Override
+        public void insertUpdate(DocumentEvent e) {
+            handleChange();
+        }
+
+        @Override
+        public void removeUpdate(DocumentEvent e) {
+            handleChange();
+        }
+
+        @Override
+        public void changedUpdate(DocumentEvent e) {
+            handleChange();
+        }
+
+        void handleChange() {
+            if (setting) {
+                return;
+            }
+            filtering = true;
+            String xx = textField.getText();
+            UILazyComboBox.this.setSelectedItem(xx);
+            this.item = textField.getText();
+
+            setPopupVisible(true);
+            filtering = false;
+        }
+    }
+}