Java tutorial
/** * Aptana Studio * Copyright (c) 2005-2011 by Appcelerator, Inc. All Rights Reserved. * Licensed under the terms of the GNU Public License (GPL) v3 (with exceptions). * Please see the license.html included with this distribution for details. * Any modifications to this file must keep this entire header intact. */ package org.radrails.rails.internal.ui.dialogs; import org.eclipse.core.resources.IProject; import org.eclipse.core.resources.ResourcesPlugin; import org.eclipse.core.runtime.CoreException; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.TitleAreaDialog; import org.eclipse.jface.layout.GridDataFactory; import org.eclipse.jface.layout.GridLayoutFactory; import org.eclipse.jface.layout.PixelConverter; import org.eclipse.jface.window.IShellProvider; import org.eclipse.swt.SWT; import org.eclipse.swt.events.ModifyEvent; import org.eclipse.swt.events.ModifyListener; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Control; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.Shell; import org.eclipse.swt.widgets.Text; import org.radrails.rails.core.RailsProjectNature; import org.radrails.rails.core.RailsServer; import org.radrails.rails.ui.RailsUIPlugin; import com.aptana.core.logging.IdeLog; import com.aptana.core.util.StringUtil; import com.aptana.ui.IPropertyDialog; import com.aptana.ui.IPropertyDialogProvider; import com.aptana.webserver.core.WebServerCorePlugin; public class RailsServerDialog extends TitleAreaDialog implements IPropertyDialog { private static final int LABEL_WIDTH = 70; private RailsServer source; private Text nameText; private Text hostNameText; private Text portText; private Combo projectCombo; private ModifyListener modifyListener; /** * @param parentShell */ public RailsServerDialog(Shell parentShell) { super(parentShell); setHelpAvailable(false); } /* * (non-Javadoc) * @see com.aptana.ui.IPropertyDialog#getPropertySource() */ public Object getPropertySource() { return source; } /* * (non-Javadoc) * @see com.aptana.ui.IPropertyDialog#setPropertySource(java.lang.Object) */ public void setPropertySource(Object element) { source = null; if (element instanceof RailsServer) { source = (RailsServer) element; } } @Override protected Control createDialogArea(Composite parent) { Composite dialogArea = (Composite) super.createDialogArea(parent); setTitle(Messages.RailsServerDialog_Title); getShell().setText(Messages.RailsServerDialog_Message); Composite composite = new Composite(dialogArea, SWT.NONE); composite.setLayoutData(GridDataFactory.fillDefaults().grab(true, true).create()); PixelConverter converter = new PixelConverter(composite); composite.setLayout(GridLayoutFactory.swtDefaults() .margins(converter.convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_MARGIN), converter.convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_MARGIN)) .spacing(converter.convertHorizontalDLUsToPixels(IDialogConstants.HORIZONTAL_SPACING), converter.convertVerticalDLUsToPixels(IDialogConstants.VERTICAL_SPACING)) .numColumns(3).create()); /* name of the server */ Label label = new Label(composite, SWT.NONE); label.setLayoutData(GridDataFactory.swtDefaults() .hint(new PixelConverter(label).convertHorizontalDLUsToPixels(LABEL_WIDTH), SWT.DEFAULT).create()); label.setText(StringUtil.makeFormLabel(Messages.RailsServerDialog_NameLabel)); nameText = new Text(composite, SWT.SINGLE | SWT.BORDER); nameText.setLayoutData(GridDataFactory.fillDefaults() .hint(convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH), SWT.DEFAULT).span(2, 1) .grab(true, false).create()); /* Project we're running server for */ label = new Label(composite, SWT.NONE); label.setLayoutData(GridDataFactory.swtDefaults() .hint(new PixelConverter(label).convertHorizontalDLUsToPixels(LABEL_WIDTH), SWT.DEFAULT).create()); label.setText(StringUtil.makeFormLabel(Messages.RailsServerDialog_ProjectLabel)); projectCombo = new Combo(composite, SWT.SINGLE | SWT.BORDER | SWT.READ_ONLY); projectCombo.setLayoutData(GridDataFactory.fillDefaults() .hint(convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH), SWT.DEFAULT).span(2, 1) .grab(true, false).create()); // Populate combo with all the rails projects for (IProject project : ResourcesPlugin.getWorkspace().getRoot().getProjects()) { try { if (project.isOpen() && project.hasNature(RailsProjectNature.ID)) { projectCombo.add(project.getName()); } } catch (CoreException e) { IdeLog.logError(RailsUIPlugin.getDefault(), e); } } if (projectCombo.getItemCount() > 0) { projectCombo.setText(projectCombo.getItems()[0]); } /* host/ip to bind to: 0.0.0.0, 127.0.0.1? */ label = new Label(composite, SWT.NONE); label.setLayoutData(GridDataFactory.swtDefaults() .hint(new PixelConverter(label).convertHorizontalDLUsToPixels(LABEL_WIDTH), SWT.DEFAULT).create()); label.setText(StringUtil.makeFormLabel(Messages.RailsServerDialog_BindingLabel)); hostNameText = new Text(composite, SWT.SINGLE | SWT.BORDER); hostNameText.setLayoutData(GridDataFactory.swtDefaults() .hint(new PixelConverter(hostNameText) .convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH), SWT.DEFAULT) .span(2, 1).align(SWT.FILL, SWT.CENTER).grab(true, false).create()); hostNameText.setText(RailsServer.DEFAULT_BINDING); /* Port: default is 3000 */ label = new Label(composite, SWT.NONE); label.setLayoutData(GridDataFactory.swtDefaults() .hint(new PixelConverter(label).convertHorizontalDLUsToPixels(LABEL_WIDTH), SWT.DEFAULT).create()); label.setText(StringUtil.makeFormLabel(Messages.RailsServerDialog_PortLabel)); portText = new Text(composite, SWT.SINGLE | SWT.BORDER); portText.setLayoutData(GridDataFactory.swtDefaults() .hint(new PixelConverter(portText) .convertHorizontalDLUsToPixels(IDialogConstants.ENTRY_FIELD_WIDTH), SWT.DEFAULT) .grab(true, false).create()); portText.setText(Integer.toString(RailsServer.DEFAULT_PORT)); // Set up values to reflect server we're editing. if (source != null) { String name = source.getName(); nameText.setText((name != null) ? name : StringUtil.EMPTY); String host = source.getHostname(); hostNameText.setText((host != null) ? host : RailsServer.DEFAULT_BINDING); portText.setText(Integer.toString(source.getPort())); IProject project = source.getProject(); if (project != null) { projectCombo.setText(project.getName()); } } addListeners(); return dialogArea; } /* * (non-Javadoc) * @see org.eclipse.jface.dialogs.TitleAreaDialog#createContents(org.eclipse. swt.widgets.Composite) */ @Override protected Control createContents(Composite parent) { try { return super.createContents(parent); } finally { validate(); } } /* * (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#okPressed() */ @Override protected void okPressed() { if (!isValid()) { return; } if (source != null) { source.setName(nameText.getText()); source.setPort(Integer.parseInt(portText.getText())); source.setHost(hostNameText.getText()); source.setProject(ResourcesPlugin.getWorkspace().getRoot().getProject(projectCombo.getText())); } WebServerCorePlugin.getDefault().saveServerConfigurations(); super.okPressed(); } private boolean isValid() { // TODO Ensure name is unique! if (nameText.getText().length() == 0) { setErrorMessage(Messages.RailsServerDialog_EmptyNameErrorMsg); return false; } // make sure port is an integer. try { Integer.parseInt(portText.getText()); } catch (NumberFormatException e) { setErrorMessage(Messages.RailsServerDialog_InvalidPortErrorMsg); return false; } // TODO Make sure a rails project is selected and exists // clear errors and warnings, return valid setErrorMessage(null); setMessage(null); return true; } private void validate() { boolean valid = isValid(); Button okButton = getButton(IDialogConstants.OK_ID); if (okButton != null) { okButton.setEnabled(valid); } } protected void addListeners() { if (modifyListener == null) { modifyListener = new ModifyListener() { public void modifyText(ModifyEvent e) { validate(); } }; } nameText.addModifyListener(modifyListener); hostNameText.addModifyListener(modifyListener); portText.addModifyListener(modifyListener); projectCombo.addModifyListener(modifyListener); } protected void removeListeners() { if (modifyListener != null) { nameText.removeModifyListener(modifyListener); hostNameText.removeModifyListener(modifyListener); portText.removeModifyListener(modifyListener); projectCombo.removeModifyListener(modifyListener); } } public static class Provider implements IPropertyDialogProvider { /* * (non-Javadoc) * @see com.aptana.ui.IPropertyDialogProvider#createPropertyDialog(org.eclipse .jface.window.IShellProvider) */ public Dialog createPropertyDialog(IShellProvider shellProvider) { return new RailsServerDialog(shellProvider.getShell()); } } }