Java tutorial
/* * Copyright 2000-2013 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.openapi.ui.popup.util; import com.intellij.openapi.Disposable; import com.intellij.openapi.application.ApplicationManager; import com.intellij.openapi.diagnostic.Logger; import com.intellij.openapi.project.Project; import com.intellij.openapi.project.ProjectManager; import com.intellij.openapi.ui.MessageType; import com.intellij.openapi.ui.popup.*; import com.intellij.openapi.wm.IdeFocusManager; import com.intellij.openapi.wm.IdeFrame; import com.intellij.openapi.wm.WindowManager; import com.intellij.ui.awt.RelativePoint; import com.intellij.util.ReflectionUtil; import com.intellij.util.ui.UIUtil; import org.jetbrains.annotations.NotNull; import org.jetbrains.annotations.Nullable; import javax.swing.*; import javax.swing.plaf.basic.ComboPopup; import java.awt.*; import java.awt.event.ComponentEvent; import java.lang.reflect.Method; public class PopupUtil { private static final Logger LOG = Logger.getInstance(PopupUtil.class); private PopupUtil() { } @Nullable public static Component getOwner(@Nullable Component c) { if (c == null) return null; final Window wnd = SwingUtilities.getWindowAncestor(c); if (wnd instanceof RootPaneContainer) { final JRootPane root = ((RootPaneContainer) wnd).getRootPane(); final JBPopup popup = (JBPopup) root.getClientProperty(JBPopup.KEY); if (popup == null) return c; final Component owner = popup.getOwner(); if (owner == null) return c; return getOwner(owner); } else { return null; } } public static JBPopup getPopupContainerFor(@Nullable Component c) { if (c == null) return null; final Window wnd = SwingUtilities.getWindowAncestor(c); if (wnd instanceof JWindow) { final JRootPane root = ((JWindow) wnd).getRootPane(); return (JBPopup) root.getClientProperty(JBPopup.KEY); } return null; } public static void setPopupType(@NotNull final PopupFactory factory, final int type) { try { final Method method = PopupFactory.class.getDeclaredMethod("setPopupType", int.class); method.setAccessible(true); method.invoke(factory, type); } catch (Throwable e) { LOG.error(e); } } public static int getPopupType(@NotNull final PopupFactory factory) { try { final Method method = PopupFactory.class.getDeclaredMethod("getPopupType"); method.setAccessible(true); final Object result = method.invoke(factory); return result instanceof Integer ? (Integer) result : -1; } catch (Throwable e) { LOG.error(e); } return -1; } public static Component getActiveComponent() { Window[] windows = Window.getWindows(); for (Window each : windows) { if (each.isActive()) { return each; } } final IdeFrame frame = IdeFocusManager.findInstance().getLastFocusedFrame(); if (frame != null) return frame.getComponent(); return JOptionPane.getRootFrame(); } public static void showBalloonForActiveFrame(@NotNull final String message, final MessageType type) { final Runnable runnable = () -> { final IdeFrame frame = IdeFocusManager.findInstance().getLastFocusedFrame(); if (frame == null) { final Project[] projects = ProjectManager.getInstance().getOpenProjects(); final Project project = projects == null || projects.length == 0 ? ProjectManager.getInstance().getDefaultProject() : projects[0]; final JFrame jFrame = WindowManager.getInstance().getFrame(project); if (jFrame != null) { showBalloonForComponent(jFrame, message, type, true, project); } else { LOG.info("Can not get component to show message: " + message); } return; } showBalloonForComponent(frame.getComponent(), message, type, true, frame.getProject()); }; UIUtil.invokeLaterIfNeeded(runnable); } public static void showBalloonForActiveComponent(@NotNull final String message, final MessageType type) { Runnable runnable = () -> { Window[] windows = Window.getWindows(); Window targetWindow = null; for (Window each : windows) { if (each.isActive()) { targetWindow = each; break; } } if (targetWindow == null) { targetWindow = JOptionPane.getRootFrame(); } if (targetWindow == null) { final IdeFrame frame = IdeFocusManager.findInstance().getLastFocusedFrame(); if (frame == null) { final Project[] projects = ProjectManager.getInstance().getOpenProjects(); final Project project = projects == null || projects.length == 0 ? ProjectManager.getInstance().getDefaultProject() : projects[0]; final JFrame jFrame = WindowManager.getInstance().getFrame(project); if (jFrame != null) { showBalloonForComponent(jFrame, message, type, true, project); } else { LOG.info("Can not get component to show message: " + message); } return; } showBalloonForComponent(frame.getComponent(), message, type, true, frame.getProject()); } else { showBalloonForComponent(targetWindow, message, type, true, null); } }; UIUtil.invokeLaterIfNeeded(runnable); } public static void showBalloonForComponent(@NotNull Component component, @NotNull final String message, final MessageType type, final boolean atTop, @Nullable final Disposable disposable) { final JBPopupFactory popupFactory = JBPopupFactory.getInstance(); if (popupFactory == null) return; BalloonBuilder balloonBuilder = popupFactory.createHtmlTextBalloonBuilder(message, type, null); balloonBuilder.setDisposable(disposable == null ? ApplicationManager.getApplication() : disposable); Balloon balloon = balloonBuilder.createBalloon(); Dimension size = component.getSize(); Balloon.Position position; int x; int y; if (size == null) { x = y = 0; position = Balloon.Position.above; } else { x = Math.min(10, size.width / 2); y = size.height; position = Balloon.Position.below; } balloon.show(new RelativePoint(component, new Point(x, y)), position); } public static boolean isComboPopupKeyEvent(@NotNull ComponentEvent event, @NotNull JComboBox comboBox) { final Component component = event.getComponent(); if (!comboBox.isPopupVisible() || component == null) return false; ComboPopup popup = ReflectionUtil.getField(comboBox.getUI().getClass(), comboBox.getUI(), ComboPopup.class, "popup"); return popup != null && SwingUtilities.isDescendingFrom(popup.getList(), component); } public static boolean handleEscKeyEvent() { MenuSelectionManager menuSelectionManager = MenuSelectionManager.defaultManager(); MenuElement[] selectedPath = menuSelectionManager.getSelectedPath(); if (selectedPath.length > 0) { // hide popup menu if any menuSelectionManager.clearSelectedPath(); } else { if (ApplicationManager.getApplication() == null) { return false; } final StackingPopupDispatcher popupDispatcher = StackingPopupDispatcher.getInstance(); if (popupDispatcher != null && !popupDispatcher.isPopupFocused()) { return false; } } return true; } }