Java tutorial
/* * Copyright 2013 Hewlett-Packard Development Company, L.P * * 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.hp.alm.ali.idea.ui.dialog; import com.hp.alm.ali.idea.entity.EntityEditManager; import com.hp.alm.ali.idea.services.AbstractCachingService; import com.hp.alm.ali.idea.services.EntityLabelService; import com.intellij.openapi.application.ApplicationManager; import com.intellij.openapi.project.Project; import com.intellij.openapi.ui.Messages; import com.intellij.openapi.util.DimensionService; import com.intellij.ui.ScreenUtil; import javax.swing.*; import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.awt.event.KeyEvent; import java.text.MessageFormat; import java.util.Collections; import java.util.List; public class MyDialog extends JDialog implements ActionListener { private Project project; public enum Button { OK, Cancel, Close, Clear, Save } private JPanel buttonPanel; private String dimensionKey; public MyDialog(Project project, String title, boolean modal) { this(project, title, modal, false); } public MyDialog(Project project, String title, boolean modal, boolean enableEscape) { this(project, title, modal, enableEscape, Collections.<Button>emptyList()); } public MyDialog(Project project, String title, boolean modal, boolean enableEscape, List<Button> buttonList) { super(JOptionPane.getRootFrame(), title, modal); this.project = project; if (enableEscape) { ActionListener escListener = new ActionListener() { public void actionPerformed(ActionEvent e) { escape(); } }; getRootPane().registerKeyboardAction(escListener, KeyStroke.getKeyStroke(KeyEvent.VK_ESCAPE, 0), JComponent.WHEN_IN_FOCUSED_WINDOW); } if (!buttonList.isEmpty()) { buttonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER)); for (Button button : buttonList) { buttonPanel.add(create(button)); } getContentPane().add(buttonPanel, BorderLayout.SOUTH); } setDefaultCloseOperation(DISPOSE_ON_CLOSE); centerOnOwner(); } protected String getDimensionKey() { return null; } protected void restoreSizeAndLocation() { // Dialog's size and location: migrate to DialogWrapper to avoid need for our own code Point location = null; Dimension size = null; dimensionKey = getDimensionKey(); if (dimensionKey != null) { location = DimensionService.getInstance().getLocation(dimensionKey, project); size = DimensionService.getInstance().getSize(dimensionKey, project); } if (location != null) { setLocation(location); } else { centerOnOwner(); } if (size != null) { setSize(size.width, size.height); } Rectangle bounds = getBounds(); ScreenUtil.fitToScreen(bounds); setBounds(bounds); } protected void buttonPerformed(Button button) { switch (button) { case Cancel: case Close: close(false); } } protected void addButton(Button button) { if (buttonPanel == null) { buttonPanel = new JPanel(new FlowLayout(FlowLayout.CENTER)); getContentPane().add(buttonPanel, BorderLayout.SOUTH); } buttonPanel.add(create(button)); } protected JButton getButton(Button button) { if (buttonPanel != null) { for (Component comp : buttonPanel.getComponents()) { if (((JButton) comp).getText().equals(button.name())) { return (JButton) comp; } } } return null; } public void actionPerformed(ActionEvent actionEvent) { JButton source = (JButton) actionEvent.getSource(); for (Button b : Button.values()) { if (b.name().equals(source.getText())) { buttonPerformed(b); return; } } } private JButton create(Button button) { JButton jButton = new JButton(button.name()); jButton.addActionListener(this); return jButton; } protected void centerOnOwner() { setLocationRelativeTo(getOwner()); } protected void close(boolean cleanClose) { if (!cleanClose) { JButton save = getButton(Button.Save); if (save != null && save.isEnabled()) { if (project.getComponent(EntityEditManager.class).askUser() != Messages.YES) { return; } } } setVisible(false); dispose(); } public void dispose() { if (dimensionKey != null) { DimensionService.getInstance().setSize(dimensionKey, getSize()); DimensionService.getInstance().setLocation(dimensionKey, getLocation()); } super.dispose(); } protected void escape() { close(false); } public void setEditorTitle(final Project project, final String template, final String entityType) { EntityLabelService entityLabelService = project.getComponent(EntityLabelService.class); entityLabelService.loadEntityLabelAsync(entityType, new AbstractCachingService.DispatchCallback<String>() { @Override public void loaded(String entityLabel) { setTitle(MessageFormat.format(template, entityLabel)); } }); } protected void packAndCenter(int maxWidth, int maxHeight, boolean withScrollbar) { Rectangle position = getBounds(); pack(); if (position != null) { Dimension size = getSize(); boolean widthAdjusted = false; if (size.width > maxWidth) { size.width = maxWidth; widthAdjusted = true; } boolean heightAdjusted = false; if (size.height > maxHeight) { size.height = maxHeight; heightAdjusted = true; } if (withScrollbar) { // try to make room for scrollbar that might have appeared if (heightAdjusted) { size.width = Math.min(maxWidth, size.width + 15); } if (widthAdjusted) { size.height = Math.min(maxHeight, size.height + 15); } } setBounds((position.x + position.width / 2) - size.width / 2, (position.y + position.height / 2) - size.height / 2, size.width, size.height); } } public void requestFocusAndAttention() { setVisible(false); ApplicationManager.getApplication().executeOnPooledThread(new Runnable() { public void run() { try { Thread.sleep(100); } catch (Exception e) { // no problem } setVisible(true); requestFocus(); } }); } }