platform/platform-impl/src/com/intellij/diagnostic/errordialog/DetailsTabForm.java

package com.intellij.diagnostic.errordialog;

import com.intellij.diagnostic.Developer;
import com.intellij.diagnostic.DiagnosticBundle;
import com.intellij.diagnostic.IdeErrorsDialog;
import com.intellij.ui.ComboboxSpeedSearch;
import com.intellij.ui.IdeBorderFactory;
import com.intellij.util.containers.ComparatorUtil;
import com.intellij.util.ui.UIUtil;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Collection;

/**
 * @author ksafonov
 */
public class DetailsTabForm {
  private JTextArea myDetailsPane;
  private JPanel myContentPane;
  private LabeledTextComponent myCommentsArea;
  private JPanel myDetailsHolder;
  private JButton myAnalyzeStacktraceButton;
  private JComboBox myAssigneeComboBox;
  private JPanel myAssigneePanel;
  private Integer myAssigneeId;
  private boolean myProcessEvents = true;

  public DetailsTabForm(@Nullable Action analyzeAction, boolean internalMode) {
    myCommentsArea.setTitle(DiagnosticBundle.message("error.dialog.comment.prompt"));
    myDetailsPane.setBackground(UIUtil.getTextFieldBackground());
    myDetailsHolder.setPreferredSize(new Dimension(IdeErrorsDialog.COMPONENTS_WIDTH, internalMode ? 500 : 205));
    myDetailsHolder.setBorder(IdeBorderFactory.createBorder());
    if (analyzeAction != null) {
      myAnalyzeStacktraceButton.setAction(analyzeAction);
    }
    else {
      myAnalyzeStacktraceButton.setVisible(false);
    }
    myAssigneeComboBox.setRenderer(new DeveloperRenderer(myAssigneeComboBox.getRenderer()));
    myAssigneeComboBox.setPrototypeDisplayValue(new Developer(0, "Here Goes Some Very Long String"));
    myAssigneeComboBox.addActionListener(new ActionListenerProxy(new ActionListener() {
      @Override
      public void actionPerformed(ActionEvent e) {
        myAssigneeId = getAssigneeId();
      }
    }));
    new ComboboxSpeedSearch(myAssigneeComboBox) {
      @Override
      protected String getElementText(Object element) {
        return element == null ? "" : ((Developer) element).getSearchableText();
      }
    };
  }

  public void setCommentsAreaVisible(boolean b) {
    myCommentsArea.getContentPane().setVisible(b);
  }

  public void setDetailsText(String s) {
    LabeledTextComponent.setText(myDetailsPane, s, false);
  }

  public void setCommentsText(String s) {
    LabeledTextComponent.setText(myCommentsArea.getTextComponent(), s, true);
  }

  public JPanel getContentPane() {
    return myContentPane;
  }

  public JComponent getPreferredFocusedComponent() {
    if (myCommentsArea.getContentPane().isVisible()) {
      return myCommentsArea.getTextComponent();
    }
    return null;
  }

  public void setCommentsTextEnabled(boolean b) {
    if (myCommentsArea.getContentPane().isVisible()) {
      myCommentsArea.getTextComponent().setEnabled(b);
    }
  }

  public void addCommentsListener(final LabeledTextComponent.TextListener l) {
    myCommentsArea.addCommentsListener(l);
  }

  public void setAssigneeVisible(boolean visible) {
    myAssigneePanel.setVisible(visible);
  }

  public void setDevelopers(Collection<Developer> developers) {
    myAssigneeComboBox.setModel(new DefaultComboBoxModel(developers.toArray()));
    updateSelectedDeveloper();
  }

  public void setAssigneeId(@Nullable Integer assigneeId) {
    myAssigneeId = assigneeId;
    if (myAssigneeComboBox.getItemCount() > 0) {
      updateSelectedDeveloper();
    }
  }

  private void updateSelectedDeveloper() {
    myProcessEvents = false;

    Integer index = null;
    for (int i = 0; i < myAssigneeComboBox.getItemCount(); i++) {
      Developer developer = (Developer) myAssigneeComboBox.getItemAt(i);
      if (ComparatorUtil.equalsNullable(developer.getId(), myAssigneeId)) {
        index = i;
        break;
      }
    }
    setSelectedAssigneeIndex(index);

    myProcessEvents = true;
  }

  private void setSelectedAssigneeIndex(Integer index) {
    if (index == null) {
      myAssigneeComboBox.setSelectedItem(null);
    } else {
      myAssigneeComboBox.setSelectedIndex(index);
    }
  }

  @Nullable
  public Integer getAssigneeId() {
    Developer assignee = (Developer) myAssigneeComboBox.getSelectedItem();
    return assignee == null ? null : assignee.getId();
  }

  public void addAssigneeListener(ActionListener listener) {
    myAssigneeComboBox.addActionListener(new ActionListenerProxy(listener));
  }

  private class ActionListenerProxy implements ActionListener {
    private final ActionListener myDelegate;

    public ActionListenerProxy(ActionListener delegate) {
      myDelegate = delegate;
    }

    @Override
    public void actionPerformed(ActionEvent e) {
      if (myProcessEvents) {
        myDelegate.actionPerformed(e);
      }
    }
  }
}