ui/impl/com/intellij/openapi/wm/impl/welcomeScreen/WelcomePopupAction.java

   1 package com.intellij.openapi.wm.impl.welcomeScreen;
   2
   3 import com.intellij.openapi.actionSystem.*;
   4 import com.intellij.openapi.project.Project;
   5 import com.intellij.openapi.ui.popup.JBPopupFactory;
   6 import com.intellij.openapi.ui.popup.ListPopup;
   7 import com.intellij.openapi.wm.ex.WindowManagerEx;
   8
   9 import javax.swing.*;
  10 import java.awt.*;
  11 import java.awt.event.InputEvent;
  12
  13 /**
  14  * @author Vladislav.Kaznacheev
  15  */
  16 public abstract class WelcomePopupAction {
  17
  18   protected abstract void fillActions(DefaultActionGroup group);
  19
  20   protected abstract String getTextForEmpty();
  21
  22   protected abstract String getCaption();
  23
  24   public void showPopup(Component contextComponent, final InputEvent e) {
  25     final DefaultActionGroup group = new DefaultActionGroup();
  26     fillActions(group);
  27
  28     if (group.getChildrenCount() == 0) {
  29       group.add(new AnAction(getTextForEmpty()) {
  30         public void actionPerformed(AnActionEvent e) {
  31           group.setPopup(false);
  32         }
  33       } );
  34     }
  35
  36     final ListPopup popup = JBPopupFactory.getInstance()
  37       .createActionGroupPopup(getCaption(),
  38                               group,
  39                               createDataContext(contextComponent),
  40                               JBPopupFactory.ActionSelectionAid.NUMBERING,
  41                               true);
  42
  43
  44     Component focusedComponent = e.getComponent();
  45     if (focusedComponent != null) {
  46       popup.showUnderneathOf(focusedComponent);
  47     }
  48     else {
  49       Rectangle r;
  50       int x;
  51       int y;
  52       focusedComponent = WindowManagerEx.getInstanceEx().getFocusedComponent((Project)null);
  53       r = WindowManagerEx.getInstanceEx().getScreenBounds();
  54       x = r.x + r.width / 2;
  55       y = r.y + r.height / 2;
  56       Point point = new Point(x, y);
  57       SwingUtilities.convertPointToScreen(point, focusedComponent.getParent());
  58
  59       popup.showInScreenCoordinates(focusedComponent.getParent(), point);
  60     }
  61   }
  62
  63   private static DataContext createDataContext(final Component contextComponent) {
  64     return new DataContext() {
  65       public Object getData(String dataId) {
  66         if (DataConstants.PROJECT.equals(dataId)) {
  67           return null;
  68         }
  69         return contextComponent;
  70       }
  71     };
  72   }
  73 }