platform-impl/src/com/intellij/ide/actions/ShowPopupMenuAction.java

   1 package com.intellij.ide.actions;
   2
   3 import com.intellij.openapi.actionSystem.AnAction;
   4 import com.intellij.openapi.actionSystem.AnActionEvent;
   5 import com.intellij.openapi.ui.popup.JBPopupFactory;
   6 import com.intellij.ui.awt.RelativePoint;
   7
   8 import javax.swing.*;
   9 import java.awt.*;
  10 import java.awt.event.MouseEvent;
  11
  12 /**
  13  * @author Vladimir Kondratyev
  14  */
  15 public class ShowPopupMenuAction extends AnAction {
  16   public ShowPopupMenuAction() {
  17     setEnabledInModalContext(true);
  18   }
  19
  20   public void actionPerformed(AnActionEvent e) {
  21     final RelativePoint relPoint = JBPopupFactory.getInstance().guessBestPopupLocation(e.getDataContext());
  22
  23     KeyboardFocusManager focusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
  24     Component focusOwner = focusManager.getFocusOwner();
  25
  26     Point popupMenuPoint = relPoint.getPoint(focusOwner);
  27
  28     focusOwner.dispatchEvent(
  29       new MouseEvent(
  30         focusOwner,
  31         MouseEvent.MOUSE_PRESSED,
  32         System.currentTimeMillis(), 0,
  33         popupMenuPoint.x,
  34         Math.max(0, popupMenuPoint.y - 1), //To avoid cursor jump to the line below. http://www.jetbrains.net/jira/browse/IDEADEV-10644
  35         1,
  36         true
  37       )
  38     );
  39   }
  40
  41   public void update(AnActionEvent e) {
  42     KeyboardFocusManager focusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
  43     e.getPresentation().setEnabled(focusManager.getFocusOwner() instanceof JComponent);
  44   }
  45 }