Java tutorial
/******************************************************************************* * Copyright (c) 2007, 2010 IBM Corporation and others. * 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 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.equinox.internal.p2.ui.admin.dialogs; import org.eclipse.equinox.p2.metadata.MetadataFactory; import org.eclipse.equinox.p2.metadata.MetadataFactory.InstallableUnitDescription; import java.util.Collection; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.equinox.internal.p2.ui.admin.ProvAdminUIActivator; import org.eclipse.equinox.internal.p2.ui.admin.ProvAdminUIMessages; import org.eclipse.equinox.p2.metadata.*; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.swt.SWT; import org.eclipse.swt.dnd.*; import org.eclipse.swt.events.*; import org.eclipse.swt.graphics.FontMetrics; import org.eclipse.swt.graphics.GC; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.*; /** * An IUImplementationGroup is a reusable UI component that displays and edits the * implementation-oriented properties of an IU. It can be used in * different dialogs that manipulate or define IU's. * * @since 3.4 */ public class IUImplementationGroup extends IUGroup { private Text id; private Text version; private Text namespace; private Text touchpointType; private List touchpointData; private List requiredCapabilities; private List providedCapabilities; public IUImplementationGroup(final Composite parent, IInstallableUnit iu, ModifyListener listener) { super(parent, iu, listener); } protected Composite createGroupComposite(Composite parent, ModifyListener listener) { Composite composite = new Composite(parent, SWT.NONE); GridLayout layout = new GridLayout(); layout.numColumns = 2; composite.setLayout(layout); GridData data = new GridData(); data.widthHint = 350; composite.setLayoutData(data); // Grid data for text controls GridData gd = new GridData(GridData.FILL_HORIZONTAL); // Grid data for controls spanning both columns GridData gd2 = new GridData(GridData.FILL_HORIZONTAL); gd2.horizontalSpan = 2; // Grid data for lists grabbing vertical space GridData gdList = new GridData(GridData.FILL_HORIZONTAL); GC gc = new GC(parent); gc.setFont(JFaceResources.getDialogFont()); FontMetrics fontMetrics = gc.getFontMetrics(); gc.dispose(); gdList.horizontalSpan = 2; gdList.heightHint = Dialog.convertHeightInCharsToPixels(fontMetrics, 5); boolean editable = iuElement == null && listener != null; Label label = new Label(composite, SWT.NONE); label.setText(ProvAdminUIMessages.IUGroup_ID); id = new Text(composite, SWT.BORDER); id.setLayoutData(gd); if (editable) { id.addModifyListener(listener); } else { id.setEditable(false); } label = new Label(composite, SWT.NONE); label.setText(ProvAdminUIMessages.IUGroup_Version); version = new Text(composite, SWT.BORDER); version.setLayoutData(gd); label = new Label(composite, SWT.NONE); label.setText(ProvAdminUIMessages.IUGroup_Namespace); namespace = new Text(composite, SWT.BORDER); namespace.setLayoutData(gd); label = new Label(composite, SWT.NONE); label.setText(ProvAdminUIMessages.IUGroup_TouchpointType); touchpointType = new Text(composite, SWT.BORDER | SWT.READ_ONLY); touchpointType.setLayoutData(gd); label = new Label(composite, SWT.NONE); label.setText(ProvAdminUIMessages.IUGroup_TouchpointData); label.setLayoutData(gd2); touchpointData = new List(composite, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL); touchpointData.setLayoutData(gdList); createCopyMenu(touchpointData); label = new Label(composite, SWT.NONE); label.setText(ProvAdminUIMessages.IUGroup_RequiredCapabilities); label.setLayoutData(gd2); requiredCapabilities = new List(composite, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL); requiredCapabilities.setLayoutData(gdList); createCopyMenu(requiredCapabilities); label = new Label(composite, SWT.NONE); label.setText(ProvAdminUIMessages.IUGroup_ProvidedCapabilities); label.setLayoutData(gd2); providedCapabilities = new List(composite, SWT.BORDER | SWT.MULTI | SWT.V_SCROLL | SWT.H_SCROLL); providedCapabilities.setLayoutData(gdList); createCopyMenu(providedCapabilities); if (editable) { id.addModifyListener(listener); version.addModifyListener(listener); namespace.addModifyListener(listener); touchpointType.addModifyListener(listener); } else { id.setEditable(false); version.setEditable(false); namespace.setEditable(false); touchpointType.setEditable(false); } initializeFields(); return composite; } private void initializeFields() { IInstallableUnit iu = getIU(); if (iu == null) { return; } id.setText(iu.getId()); version.setText(iu.getVersion().toString()); String value = iu.getProperty(IInstallableUnit.NAMESPACE_IU_ID); if (value != null) { namespace.setText(value); } ITouchpointType type = iu.getTouchpointType(); if (type != null) { touchpointType.setText(type.getId()); } Collection<ITouchpointData> data = iu.getTouchpointData(); String[] items = new String[data.size()]; int i = 0; for (ITouchpointData td : data) { items[i++] = td.toString(); } touchpointData.setItems(items); Collection<IRequirement> reqs = iu.getRequirements(); items = new String[reqs.size()]; i = 0; for (IRequirement req : reqs) { items[i++] = req.toString(); } requiredCapabilities.setItems(items); Collection<IProvidedCapability> prov = iu.getProvidedCapabilities(); items = new String[prov.size()]; i = 0; for (IProvidedCapability capability : prov) { items[i++] = capability.toString(); } providedCapabilities.setItems(items); } public void updateIU() { // If it's not an InstallableUnit it is not editable if (iuElement == null || iuElement instanceof IInstallableUnit) { InstallableUnitDescription unit = new InstallableUnitDescription(); unit.setId(id.getText().trim()); unit.setVersion(Version.create(version.getText().trim())); unit.setProperty(IInstallableUnit.NAMESPACE_IU_ID, namespace.getText().trim()); // TODO this is bogus because we don't let user provide a touchpoint type version unit.setTouchpointType( MetadataFactory.createTouchpointType(touchpointType.getText().trim(), Version.create("1.0.0"))); //$NON-NLS-1$ iuElement = MetadataFactory.createInstallableUnit(unit); } } /** * Return a status indicating the validity of the profile info * * @return a status indicating the validity of the profile info */ public IStatus verify() { if (id.getText().trim().length() == 0) { return new Status(IStatus.ERROR, ProvAdminUIActivator.PLUGIN_ID, 0, ProvAdminUIMessages.IUGroup_IU_ID_Required, null); } // TODO what kind of validation do we perform for other properties? return new Status(IStatus.OK, ProvAdminUIActivator.PLUGIN_ID, IStatus.OK, "", null); //$NON-NLS-1$ } private void createCopyMenu(final List list) { Menu copyMenu = new Menu(list); MenuItem copyItem = new MenuItem(copyMenu, SWT.NONE); copyItem.addSelectionListener(new SelectionListener() { /* * @see SelectionListener.widgetSelected (SelectionEvent) */ public void widgetSelected(SelectionEvent e) { copySelectionsToClipboard(list); } /* * @see SelectionListener.widgetDefaultSelected(SelectionEvent) */ public void widgetDefaultSelected(SelectionEvent e) { copySelectionsToClipboard(list); } }); copyItem.setText(JFaceResources.getString("copy")); //$NON-NLS-1$ list.setMenu(copyMenu); } void copySelectionsToClipboard(List list) { StringBuffer buffer = new StringBuffer(); String[] selections = list.getSelection(); for (int i = 0; i < selections.length; i++) { buffer.append(selections[i]); buffer.append("\n"); //$NON-NLS-1$ } Clipboard clipboard = new Clipboard(list.getDisplay()); clipboard.setContents(new Object[] { buffer.toString() }, new Transfer[] { TextTransfer.getInstance() }); clipboard.dispose(); } }