JreComboboxEditor.java

/*
 * Copyright 2000-2015 JetBrains s.r.o.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.intellij.execution.ui;

import com.intellij.openapi.ui.TextComponentAccessor;
import com.intellij.openapi.util.io.FileUtil;
import com.intellij.ui.SortedComboBoxModel;
import com.intellij.ui.components.JBTextField;
import com.intellij.util.ui.StatusText;
import org.jetbrains.annotations.NotNull;

import javax.swing.*;
import javax.swing.plaf.basic.BasicComboBoxEditor;
import java.awt.*;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;

/**
 * @author nik
 */
class JreComboboxEditor extends BasicComboBoxEditor {
  public static final TextComponentAccessor<JComboBox> TEXT_COMPONENT_ACCESSOR = new JreComboBoxTextComponentAccessor();
  private final SortedComboBoxModel<JrePathEditor.JreComboBoxItem> myComboBoxModel;

  public JreComboboxEditor(SortedComboBoxModel<JrePathEditor.JreComboBoxItem> comboBoxModel) {
    myComboBoxModel = comboBoxModel;
  }

  @Override
  public void setItem(Object anObject) {
    editor.setText(anObject == null ? "" : ((JrePathEditor.JreComboBoxItem)anObject).getPresentableText());
  }

  @Override
  public Object getItem() {
    String text = editor.getText().trim();
    for (JrePathEditor.JreComboBoxItem item : myComboBoxModel.getItems()) {
      if (item.getPresentableText().equals(text)) {
        return item;
      }
    }
    return new JrePathEditor.CustomJreItem(FileUtil.toSystemIndependentName(text));
  }

  @Override
  protected JTextField createEditorComponent() {
    JBTextField field = new JBTextField();
    field.setBorder(null);
    field.addFocusListener(new FocusListener() {
      @Override public void focusGained(FocusEvent e) {
        update(e);
      }
      @Override public void focusLost(FocusEvent e) {
        update(e);
      }

      private void update(FocusEvent e) {
        Component c = e.getComponent().getParent();
        if (c != null) {
          c.revalidate();
          c.repaint();
        }
      }
    });

    return field;
  }

  public StatusText getEmptyText() {
    return getEditorComponent().getEmptyText();
  }

  public JBTextField getEditorComponent() {
    return (JBTextField)super.getEditorComponent();
  }

  private static class JreComboBoxTextComponentAccessor implements TextComponentAccessor<JComboBox> {
    @Override
    public String getText(JComboBox component) {
      Object item = component.getEditor().getItem();
      return item != null ? ((JrePathEditor.JreComboBoxItem)item).getPresentableText() : "";
    }

    @Override
    public void setText(JComboBox component, @NotNull String text) {
      component.getEditor().setItem(new JrePathEditor.CustomJreItem(FileUtil.toSystemIndependentName(text)));
    }
  }
}