Java tutorial
/////////////////////////////////////////////////////////////////////////////// // // PACKAGE : com.astra.ses.spell.gui.dialogs // // FILE : PromptDialog.java // // DATE : 2008-11-21 08:55 // // Copyright (C) 2008, 2010 SES ENGINEERING, Luxembourg S.A.R.L. // // By using this software in any way, you are agreeing to be bound by // the terms of this license. // // All rights reserved. This program and the accompanying materials // are made available under the terms of the Eclipse Public License v1.0 // which accompanies this distribution, and is available at // http://www.eclipse.org/legal/epl-v10.html // // NO WARRANTY // EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, THE PROGRAM IS PROVIDED // ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER // EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY WARRANTIES OR // CONDITIONS OF TITLE, NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A // PARTICULAR PURPOSE. Each Recipient is solely responsible for determining // the appropriateness of using and distributing the Program and assumes all // risks associated with its exercise of rights under this Agreement , // including but not limited to the risks and costs of program errors, // compliance with applicable laws, damage to or loss of data, programs or // equipment, and unavailability or interruption of operations. // // DISCLAIMER OF LIABILITY // EXCEPT AS EXPRESSLY SET FORTH IN THIS AGREEMENT, NEITHER RECIPIENT NOR ANY // CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING WITHOUT LIMITATION // LOST PROFITS), HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) // ARISING IN ANY WAY OUT OF THE USE OR DISTRIBUTION OF THE PROGRAM OR THE // EXERCISE OF ANY RIGHTS GRANTED HEREUNDER, EVEN IF ADVISED OF THE // POSSIBILITY OF SUCH DAMAGES. // // Contributors: // SES ENGINEERING - initial API and implementation and/or initial documentation // // PROJECT : SPELL // // SUBPROJECT: SPELL GUI Client // /////////////////////////////////////////////////////////////////////////////// package com.astra.ses.spell.gui.dialogs; import java.util.ArrayList; import java.util.Vector; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.resource.ImageDescriptor; import org.eclipse.swt.SWT; import org.eclipse.swt.events.KeyEvent; import org.eclipse.swt.events.KeyListener; import org.eclipse.swt.graphics.Color; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import com.astra.ses.spell.gui.Activator; import com.astra.ses.spell.gui.core.comm.commands.CmdScript; import com.astra.ses.spell.gui.core.comm.commands.ExecutorCommand; import com.astra.ses.spell.gui.core.services.ServiceManager; import com.astra.ses.spell.gui.procs.model.Procedure; import com.astra.ses.spell.gui.procs.services.ProcedureManager; import com.astra.ses.spell.gui.services.ConfigurationManager; /******************************************************************************* * @brief Dialog for entering scripts * @date 18/09/07 * @author Rafael Chinchilla (GMV) ******************************************************************************/ public class ScriptDialog extends TitleAreaDialog implements KeyListener { // ========================================================================= // # STATIC DATA MEMBERS // ========================================================================= // PRIVATE ----------------------------------------------------------------- private static final int EXECUTE_ID = 998897; private static final String EXECUTE_LABEL = "Execute"; private static final int CLEAR_ID = 998899; private static final String CLEAR_LABEL = "Clear"; private static final int CLOSE_ID = 998898; private static final String CLOSE_LABEL = "Close"; private static ConfigurationManager s_cfg = null; private static ArrayList<String> s_history = new ArrayList<String>(); // PROTECTED --------------------------------------------------------------- // PUBLIC ------------------------------------------------------------------ // ========================================================================= // # INSTANCE DATA MEMBERS // ========================================================================= // PRIVATE ----------------------------------------------------------------- /** Holds the dialog image icon */ private Image m_image; /** Holds the procedure id */ private String m_procId; /** Holds the text input */ private Text m_input; /** Holds the text output */ private Text m_output; /** Holds the pointer in history */ private int m_historyIndex; // PROTECTED --------------------------------------------------------------- // PUBLIC ------------------------------------------------------------------ // ========================================================================= // # ACCESSIBLE METHODS // ========================================================================= /*************************************************************************** * Constructor * * @param shell * The parent shell **************************************************************************/ public ScriptDialog(Shell shell, String procId) { super(shell); // Obtain the image for the dialog icon ImageDescriptor descr = Activator.getImageDescriptor("icons/dlg_question.png"); m_image = descr.createImage(); m_procId = procId; if (s_cfg == null) { s_cfg = (ConfigurationManager) ServiceManager.get(ConfigurationManager.ID); } m_historyIndex = s_history.size(); } /*************************************************************************** * Called when the dialog is about to close. * * @return The superclass return value. **************************************************************************/ public boolean close() { m_image.dispose(); return super.close(); } /*************************************************************************** * Get focus **************************************************************************/ public boolean setFocus() { m_input.setFocus(); return true; } @Override public void keyPressed(KeyEvent arg0) { } @Override public void keyReleased(KeyEvent event) { if ((event.stateMask & SWT.CTRL) != 0) { if (event.keyCode == SWT.ARROW_UP) { if (m_historyIndex >= 1 && s_history.size() >= 1) { m_historyIndex--; System.err.println( "Go back in history (" + m_historyIndex + "): " + s_history.get(m_historyIndex)); m_input.setText(s_history.get(m_historyIndex)); } } else if (event.keyCode == SWT.ARROW_DOWN) { if (s_history.size() >= 1 && m_historyIndex < s_history.size() - 1) { m_historyIndex++; System.err.println( "Go forward in history (" + m_historyIndex + "): " + s_history.get(m_historyIndex)); m_input.setText(s_history.get(m_historyIndex)); } else { m_historyIndex = s_history.size(); m_input.setText(""); } } } } /*************************************************************************** * Adds output **************************************************************************/ public void addScriptOutput(String output) { m_output.append(output + m_output.getLineDelimiter()); } // ========================================================================= // # NON-ACCESSIBLE METHODS // ========================================================================= /*************************************************************************** * Creates the dialog contents. * * @param parent * The base composite of the dialog * @return The resulting contents **************************************************************************/ protected Control createContents(Composite parent) { Control contents = super.createContents(parent); setMessage("Manual script execution for '" + m_procId + "'"); setTitle(m_procId + " manual execution"); setTitleImage(m_image); return contents; } /*************************************************************************** * Create the dialog area contents. * * @param parent * The base composite of the dialog * @return The resulting contents **************************************************************************/ protected Control createDialogArea(Composite parent) { // Main composite of the dialog area ----------------------------------- Composite top = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); top.setLayoutData(new GridData(GridData.FILL_BOTH)); layout.marginHeight = 10; layout.marginWidth = 10; layout.marginTop = 10; layout.marginBottom = 10; layout.marginLeft = 10; layout.marginRight = 10; layout.numColumns = 1; top.setLayout(layout); m_output = new Text(top, SWT.BORDER | SWT.V_SCROLL | SWT.WRAP | SWT.MULTI); GridData gdout = new GridData(); gdout.heightHint = 150; gdout.widthHint = 550; gdout.grabExcessHorizontalSpace = true; m_output.setLayoutData(gdout); m_output.setEditable(false); m_output.setBackground(new Color(Display.getCurrent(), 220, 220, 220)); //TODO font zoom m_output.setFont(s_cfg.getFont("CODE")); m_input = new Text(top, SWT.BORDER | SWT.V_SCROLL | SWT.WRAP | SWT.MULTI); GridData gdin = new GridData(); gdin.heightHint = 150; gdin.widthHint = 550; gdin.grabExcessHorizontalSpace = true; m_input.setLayoutData(gdin); m_input.setBackground(new Color(Display.getCurrent(), 220, 220, 220)); m_input.setFont(s_cfg.getFont("CODE")); m_input.addKeyListener(this); m_input.setFocus(); return parent; } /*************************************************************************** * Create the button bar buttons. * * @param parent * The Button Bar. **************************************************************************/ protected void createButtonsForButtonBar(Composite parent) { createButton(parent, EXECUTE_ID, EXECUTE_LABEL, false); createButton(parent, CLEAR_ID, CLEAR_LABEL, false); createButton(parent, CLOSE_ID, CLOSE_LABEL, false); } /*************************************************************************** * Called when one of the buttons of the button bar is pressed. * * @param buttonId * The button identifier. **************************************************************************/ protected void buttonPressed(int buttonId) { switch (buttonId) { case EXECUTE_ID: ExecutorCommand cmd = new CmdScript(); String code = m_input.getText(); if (code != null && (!code.isEmpty())) { // Disallow Goto commands if (code.indexOf("Goto") != -1) { MessageDialog.openError(getShell(), "Invalid code", "Cannot issue goto commands from the script dialog"); m_input.setFocus(); } else { // Store the command in the history s_history.add(m_input.getText()); // Refursbish it code = code.replaceAll("'", "\""); // Set command script as argument of the executor command Vector<String> args = new Vector<String>(); args.add(code); cmd.setArgs(args); // Issue the command to the procedure ProcedureManager mgr = (ProcedureManager) ServiceManager.get(ProcedureManager.ID); Procedure proc = mgr.getProcedure(m_procId); proc.issueCommand(cmd); // Put the history index at top m_historyIndex = s_history.size(); } } break; case CLOSE_ID: close(); break; case CLEAR_ID: m_input.setText(""); m_input.setFocus(); break; } } }