Java tutorial
/** BlackBoard breadboard designer Written and maintained by Matthias Pueski Copyright (c) 2010-2011 Matthias Pueski This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ package org.pmedv.blackboard.commands; import java.awt.Color; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.InputEvent; import java.awt.event.KeyEvent; import java.awt.event.MouseEvent; import java.awt.event.MouseMotionListener; import javax.swing.Action; import javax.swing.ImageIcon; import javax.swing.KeyStroke; import javax.swing.undo.UndoManager; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.pmedv.blackboard.EditorUtils; import org.pmedv.blackboard.app.FileState; import org.pmedv.blackboard.components.BoardEditor; import org.pmedv.blackboard.components.Item; import org.pmedv.blackboard.components.Layer; import org.pmedv.blackboard.components.Resistor; import org.pmedv.blackboard.components.TextPart; import org.pmedv.blackboard.dialogs.TextPropertiesDialog; import org.pmedv.core.commands.AbstractEditorCommand; import org.pmedv.core.context.AppContext; import org.pmedv.core.dialogs.AbstractNiceDialog; import org.springframework.context.ApplicationContext; /** * This command adds a new {@link Resistor} with a specified value to the board. * * @author Matthias Pueski (29.05.2011) * */ public class AddTextCommand extends AbstractEditorCommand implements MouseMotionListener { private static final long serialVersionUID = 6153211504066921518L; private static final Log log = LogFactory.getLog(AddTextCommand.class); private int lastFontSize = 12; private Font lastSelectedFont = new Font("Courier", Font.PLAIN, lastFontSize); int mouseX; int mouseY; public AddTextCommand() { putValue(Action.NAME, resources.getResourceByKey("AddTextCommand.name")); putValue(Action.SMALL_ICON, resources.getIcon("icon.addtext")); putValue(Action.SHORT_DESCRIPTION, resources.getResourceByKey("AddTextCommand.description")); putValue(Action.ACCELERATOR_KEY, KeyStroke.getKeyStroke(KeyEvent.VK_T, InputEvent.CTRL_DOWN_MASK)); setEnabled(false); } @Override public void execute(ActionEvent e) { final ApplicationContext ctx = AppContext.getContext(); final BoardEditor editor = EditorUtils.getCurrentActiveEditor(); final String title = resources.getResourceByKey("AddTextCommand.name"); final String subTitle = resources.getResourceByKey("AddTextCommand.dialog.subtitle"); final ImageIcon icon = resources.getIcon("icon.dialog.text"); int x = editor.getModel().getWidth() / 2; int y = editor.getModel().getHeight() / 2; if (null != e && e.getSource().getClass().getName().startsWith("javax.swing.JPopupMenu")) { x = mouseX; y = mouseY; } final TextPart p = new TextPart(resources.getResourceByKey("AddTextCommand.defaultText"), lastSelectedFont, Color.BLACK, x, y, 0); final TextPropertiesDialog dlg = new TextPropertiesDialog(title, subTitle, icon, p); dlg.setVisible(true); if (dlg.getResult() == AbstractNiceDialog.OPTION_CANCEL) return; // preserve font properties lastSelectedFont = p.getFont(); lastFontSize = dlg.getFontSize(); // now get a new index int max = 0; for (Layer layer : editor.getModel().getLayers()) { for (Item item : layer.getItems()) { if (item.getIndex() > max) max = item.getIndex(); } } max++; p.setIndex(max); final Layer currentLayer = (Layer) ctx.getBean(ShowLayersCommand.class).getLayerPanel() .getCurrentLayerCombo().getSelectedItem(); editor.getModel().getLayer(currentLayer.getIndex()).getItems().add(p); final UndoManager undoManager = editor.getUndoManager(); if (!undoManager.addEdit(new AddTextEdit(p))) { log.error("could not add edit to undo manager"); } editor.setFileState(FileState.DIRTY); editor.updateStatusBar(); ctx.getBean(RedoCommand.class).setEnabled(undoManager.canRedo()); ctx.getBean(UndoCommand.class).setEnabled(undoManager.canUndo()); } @Override public void mouseDragged(MouseEvent e) { } @Override public void mouseMoved(MouseEvent e) { mouseX = e.getX(); mouseY = e.getY(); } }