Java tutorial
package com.safi.workshop.sqlexplorer.dialogs; /* * Copyright (C) 2002-2004 Andrea Mazzolini * andreamazzolini@users.sourceforge.net * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.preference.IPreferenceStore; import org.eclipse.swt.SWT; import org.eclipse.swt.events.DisposeEvent; import org.eclipse.swt.events.DisposeListener; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.graphics.Image; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import com.safi.workshop.sqlexplorer.IConstants; import com.safi.workshop.sqlexplorer.Messages; import com.safi.workshop.sqlexplorer.dbproduct.Alias; import com.safi.workshop.sqlexplorer.dbproduct.User; import com.safi.workshop.sqlexplorer.plugin.SQLExplorerPlugin; import com.safi.workshop.sqlexplorer.util.ImageUtil; public class PasswordConnDlg extends TitleAreaDialog { private static final int SIZING_TEXT_FIELD_WIDTH = 250; // Alias; this MUST match the user's alias (if there is a User object) private Alias alias; // User private User user; private Text userTxt; private Text pswdTxt; private Button fAutoCommitBox; private Button fCommitOnCloseBox; private String userName; private String passwd; private boolean autoCommit = false; private boolean commitOnClose = false; public PasswordConnDlg(Shell parentShell, Alias alias, User user) { super(parentShell); this.alias = alias; this.user = user; } @Override protected void setShellStyle(int newShellStyle) { super.setShellStyle(newShellStyle | SWT.RESIZE);// Make the dialog resizable } @Override protected void configureShell(Shell shell) { super.configureShell(shell); shell.setText(Messages.getString("Connection_1")); //$NON-NLS-1$ } @Override protected Control createContents(Composite parent) { Control contents = super.createContents(parent); setTitle(Messages.getString("Connection_4")); //$NON-NLS-1$ setMessage(Messages.getString("Insert_Password_1")); //$NON-NLS-1$ Image image = ImageUtil.getImage("Images.WizardLogo"); if (image != null) { setTitleImage(image); } contents.addDisposeListener(new DisposeListener() { public void widgetDisposed(DisposeEvent e) { ImageUtil.disposeImage("Images.WizardLogo"); } }); return contents; } @Override protected Control createDialogArea(Composite parent) { // top level composite Composite parentComposite = (Composite) super.createDialogArea(parent); // create a composite with standard margins and spacing Composite composite = new Composite(parentComposite, SWT.NONE); GridLayout layout = new GridLayout(); layout.marginHeight = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN); layout.marginWidth = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN); layout.verticalSpacing = convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING); layout.horizontalSpacing = convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING); composite.setLayout(layout); composite.setLayoutData(new GridData(GridData.FILL_BOTH)); composite.setFont(parentComposite.getFont()); Composite nameGroup = new Composite(composite, SWT.NONE); layout = new GridLayout(); layout.numColumns = 2; layout.marginWidth = 10; nameGroup.setLayout(layout); GridData data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL); nameGroup.setLayoutData(data); Label label = new Label(nameGroup, SWT.WRAP); label.setText(Messages.getString("Alias_1")); //$NON-NLS-1$ Label aliasTxt = new Label(nameGroup, SWT.WRAP); aliasTxt.setText(alias.getName()); Label label2 = new Label(nameGroup, SWT.WRAP); label2.setText(Messages.getString("Driver_2")); //$NON-NLS-1$ Label driverTxt = new Label(nameGroup, SWT.WRAP); driverTxt.setText(alias.getDriver().getId()); Label label3 = new Label(nameGroup, SWT.WRAP); label3.setText(Messages.getString("Url_3")); //$NON-NLS-1$ Label urlTxt = new Label(nameGroup, SWT.WRAP); urlTxt.setText(alias.getUrl()); Label label4 = new Label(nameGroup, SWT.WRAP); label4.setText(Messages.getString("User_4")); //$NON-NLS-1$ userTxt = new Text(nameGroup, SWT.BORDER); if (user != null) userTxt.setText(user.getUserName()); data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL); data.widthHint = SIZING_TEXT_FIELD_WIDTH; data.horizontalSpan = 1; userTxt.setLayoutData(data); Label label5 = new Label(nameGroup, SWT.WRAP); label5.setText(Messages.getString("Password_5")); //$NON-NLS-1$ pswdTxt = new Text(nameGroup, SWT.BORDER); if (user != null) pswdTxt.setText(user.getPassword()); pswdTxt.setEchoChar('*'); data = new GridData(GridData.HORIZONTAL_ALIGN_FILL | GridData.GRAB_HORIZONTAL); data.widthHint = SIZING_TEXT_FIELD_WIDTH; data.horizontalSpan = 1; pswdTxt.setLayoutData(data); pswdTxt.setFocus(); fAutoCommitBox = new Button(nameGroup, SWT.CHECK); fAutoCommitBox.setText(Messages.getString("PasswordConnDlg.AutoCommit_1")); //$NON-NLS-1$ GridData gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalAlignment = GridData.BEGINNING; gd.horizontalSpan = 1; fAutoCommitBox.setLayoutData(gd); fCommitOnCloseBox = new Button(nameGroup, SWT.CHECK); fCommitOnCloseBox.setText(Messages.getString("PasswordConnDlg.Commit_On_Close_2")); //$NON-NLS-1$ gd = new GridData(GridData.FILL_HORIZONTAL); gd.horizontalAlignment = GridData.BEGINNING; gd.horizontalSpan = 2; fCommitOnCloseBox.setLayoutData(gd); fAutoCommitBox.addSelectionListener(new SelectionListener() { public void widgetDefaultSelected(SelectionEvent e) { } public void widgetSelected(SelectionEvent e) { if (fAutoCommitBox.getSelection()) { fCommitOnCloseBox.setEnabled(false); } else fCommitOnCloseBox.setEnabled(true); } }); fAutoCommitBox.getDisplay().asyncExec(new Runnable() { public void run() { IPreferenceStore store = SQLExplorerPlugin.getDefault().getPreferenceStore(); fCommitOnCloseBox.setSelection(store.getBoolean(IConstants.COMMIT_ON_CLOSE)); fAutoCommitBox.setSelection(store.getBoolean(IConstants.AUTO_COMMIT)); if (fAutoCommitBox.getSelection()) { fCommitOnCloseBox.setEnabled(false); } else fCommitOnCloseBox.setEnabled(true); } }); return parentComposite; } public String getPassword() { return passwd; } @Override protected void okPressed() { passwd = pswdTxt.getText(); userName = userTxt.getText(); autoCommit = fAutoCommitBox.getSelection(); commitOnClose = fCommitOnCloseBox.getSelection(); super.okPressed(); } public String getUserName() { return userName; } public boolean getAutoCommit() { return autoCommit; } public boolean getCommitOnClose() { return commitOnClose; } /* * (non-Javadoc) * * @see org.eclipse.jface.window.Window#open() */ @Override public int open() { setBlockOnOpen(false); super.open(); getShell().forceActive(); runEventLoop(getShell()); return getReturnCode(); } /** * Runs the event loop for the given shell. * * @param loopShell * the shell */ private void runEventLoop(Shell loopShell) { // Use the display provided by the shell if possible Display display; if (getShell() == null) { display = Display.getCurrent(); } else { display = loopShell.getDisplay(); } while (loopShell != null && !loopShell.isDisposed()) { try { if (!display.readAndDispatch()) { display.sleep(); } } catch (Exception e) { SQLExplorerPlugin.error(e); } } display.update(); } }