ToolTip.java

package jetbrains.mps.ide.tooltips;

/*Generated by MPS */

import java.awt.Color;
import com.intellij.codeInsight.hint.HintUtil;
import java.awt.Frame;
import java.awt.Point;
import java.awt.Window;
import java.awt.Component;
import java.awt.event.FocusListener;
import java.awt.event.FocusAdapter;
import java.awt.event.FocusEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.KeyListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JScrollPane;
import com.intellij.ui.ScrollPaneFactory;
import javax.swing.border.LineBorder;
import java.awt.Rectangle;
import jetbrains.mps.util.WindowsUtil;

public class ToolTip {
  public static final Color BACKGROUND_COLOR = HintUtil.INFORMATION_COLOR;
  private static final int X_OFFSET = 13;
  private static final int Y_OFFSET = 3;
  private ToolTip.MyDialog myDialog;
  private ToolTipData myHintInformation;
  private boolean myRigthAligned;
  /*package*/ ToolTip(boolean rightAligned) {
    myRigthAligned = rightAligned;
  }
  /*package*/ void show(Frame owner, Point location, ToolTipData hintInformation) {
    myHintInformation = hintInformation;
    location = new Point(location.x + ((myRigthAligned ? -X_OFFSET : X_OFFSET)), location.y + Y_OFFSET);
    myDialog = new ToolTip.MyDialog(owner, location, myRigthAligned, hintInformation);
    myDialog.setVisible(true);
  }
  /*package*/ void hide() {
    if (myDialog != null) {
      myDialog.dispose();
      myDialog = null;
    }
  }
  /*package*/ String getText() {
    if (myHintInformation == null) {
      return null;
    }
    return myHintInformation.getText();
  }
  /*package*/ static class MyDialog extends Window {
    private Component myPrevFocusOwner;
    private FocusListener myOwnerFocusListener = new FocusAdapter() {
      @Override
      public void focusLost(FocusEvent p0) {
        dispose();

      }
    };
    private MouseListener myOwnerMouseListener = new MouseAdapter() {
      @Override
      public void mousePressed(MouseEvent p0) {
        dispose();
      }
    };
    private KeyListener myOwnerKeyListener = new KeyAdapter() {
      @Override
      public void keyPressed(KeyEvent p0) {
        dispose();
      }
    };
    /*package*/ MyDialog(Frame owner, Point location, boolean rightAligned, ToolTipData toolTipData) {
      super(owner);
      myPrevFocusOwner = owner.getFocusOwner();

      setFocusableWindowState(false);

      JScrollPane scrollPane = ScrollPaneFactory.createScrollPane(toolTipData.getComponent());
      scrollPane.setBorder(new LineBorder(Color.BLACK));
      add(scrollPane);

      pack();
      if (rightAligned) {
        location.x = Math.max(0, location.x - getWidth());
      }
      Rectangle rect = WindowsUtil.findDeviceBoundsAt(location);
      if (rect.x + rect.width < location.x + getWidth()) {
        location.x = Math.max(0, rect.x + rect.width - getWidth());
      }
      if (rect.y + rect.height < location.y + getHeight()) {
        location.y = Math.max(0, rect.y + rect.height - getHeight());
      }
      setLocation(location);
      addListeners();
    }
    private void addListeners() {
      if (myPrevFocusOwner != null) {
        myPrevFocusOwner.addFocusListener(myOwnerFocusListener);
        myPrevFocusOwner.addMouseListener(myOwnerMouseListener);
        myPrevFocusOwner.addKeyListener(myOwnerKeyListener);
      }
      super.dispose();
    }
    @Override
    public void dispose() {
      if (myPrevFocusOwner != null) {
        myPrevFocusOwner.removeFocusListener(myOwnerFocusListener);
        myPrevFocusOwner.removeMouseListener(myOwnerMouseListener);
        myPrevFocusOwner.removeKeyListener(myOwnerKeyListener);
      }
      super.dispose();
    }
  }
}