Java tutorial
/* * Copyright 2008 the Seasar Foundation and the Others. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, * either express or implied. See the License for the specific language * governing permissions and limitations under the License. * * This is a program source code derived from the Eclipse Software. * An original copyright notice is as follows. ******************************************************************************* * Copyright (c) 2000, 2007 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.seasar.s2junit4plugin.wizard; import java.util.Iterator; import java.util.List; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.Shell; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.IDialogSettings; import org.eclipse.jface.operation.IRunnableContext; import org.eclipse.jface.viewers.StructuredSelection; import org.eclipse.ui.PlatformUI; import org.eclipse.jdt.core.IJavaProject; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.ITypeParameter; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jdt.core.search.IJavaSearchConstants; import org.eclipse.jdt.core.search.IJavaSearchScope; import org.eclipse.jdt.core.search.SearchEngine; import org.eclipse.jdt.core.search.TypeNameMatch; import org.eclipse.jdt.internal.corext.util.JavaModelUtil; import org.eclipse.jdt.internal.corext.util.Messages; import org.eclipse.jdt.ui.wizards.NewTypeWizardPage; import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; import org.eclipse.jdt.internal.ui.JavaPlugin; import org.eclipse.jdt.internal.ui.dialogs.OpenTypeSelectionDialog; import org.eclipse.jdt.internal.ui.dialogs.StatusInfo; import org.eclipse.jdt.internal.ui.wizards.NewWizardMessages; /** * A type selection dialog providing means to open interface(s). */ public class S2JUnit4SuperInterfaceSelectionDialog extends OpenTypeSelectionDialog { private static final int ADD_ID = IDialogConstants.CLIENT_ID + 1; private NewS2JUnit4TypeWizardPage fTypeWizardPage; private List fOldContent; /** * Creates new instance of SuperInterfaceSelectionDialog * * @param parent * shell to parent the dialog on * @param context * context used to execute long-running operations associated * with this dialog * @param page * page that opened this dialog * @param p * the java project which will be considered when searching for * interfaces */ public S2JUnit4SuperInterfaceSelectionDialog(Shell parent, IRunnableContext context, NewS2JUnit4TypeWizardPage page, IJavaProject p) { super(parent, true, context, createSearchScope(p), IJavaSearchConstants.INTERFACE); fTypeWizardPage = page; // to restore the content of the dialog field if the dialog is canceled fOldContent = fTypeWizardPage.getSuperInterfaces(); setStatusLineAboveButtons(true); } /* (non-Javadoc) * @see org.eclipse.ui.dialogs.SelectionDialog#createButtonsForButtonBar(org.eclipse.swt.widgets.Composite) */ protected void createButtonsForButtonBar(Composite parent) { createButton(parent, ADD_ID, NewWizardMessages.SuperInterfaceSelectionDialog_addButton_label, true); super.createButtonsForButtonBar(parent); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#getDialogBoundsSettings() */ protected IDialogSettings getDialogBoundsSettings() { return JavaPlugin.getDefault().getDialogSettingsSection("DialogBounds_SuperInterfaceSelectionDialog"); //$NON-NLS-1$ } /* (non-Javadoc) * @see org.eclipse.ui.dialogs.SelectionStatusDialog#updateButtonsEnableState(org.eclipse.core.runtime.IStatus) */ protected void updateButtonsEnableState(IStatus status) { super.updateButtonsEnableState(status); Button addButton = getButton(ADD_ID); if (addButton != null && !addButton.isDisposed()) addButton.setEnabled(!status.matches(IStatus.ERROR)); } /* (non-Javadoc) * @see org.eclipse.jface.window.Window#handleShellCloseEvent() */ protected void handleShellCloseEvent() { super.handleShellCloseEvent(); // Handle the closing of the shell by selecting the close icon fTypeWizardPage.setSuperInterfaces(fOldContent, true); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#cancelPressed() */ protected void cancelPressed() { fTypeWizardPage.setSuperInterfaces(fOldContent, true); super.cancelPressed(); } /* (non-Javadoc) * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int) */ protected void buttonPressed(int buttonId) { if (buttonId == ADD_ID) { addSelectedInterfaces(); } else { super.buttonPressed(buttonId); } } /* (non-Javadoc) * @see org.eclipse.ui.dialogs.SelectionStatusDialog#okPressed() */ protected void okPressed() { addSelectedInterfaces(); super.okPressed(); } /* * Adds selected interfaces to the list. */ private void addSelectedInterfaces() { StructuredSelection selection = getSelectedItems(); if (selection == null) return; for (Iterator iter = selection.iterator(); iter.hasNext();) { Object obj = iter.next(); if (obj instanceof TypeNameMatch) { accessedHistoryItem(obj); TypeNameMatch type = (TypeNameMatch) obj; String qualifiedName = getNameWithTypeParameters(type.getType()); String message; if (fTypeWizardPage.addSuperInterface(qualifiedName)) { message = Messages.format(NewWizardMessages.SuperInterfaceSelectionDialog_interfaceadded_info, qualifiedName); } else { message = Messages.format( NewWizardMessages.SuperInterfaceSelectionDialog_interfacealreadyadded_info, qualifiedName); } updateStatus(new StatusInfo(IStatus.INFO, message)); } } } /* * Creates a searching scope including only one project. */ private static IJavaSearchScope createSearchScope(IJavaProject p) { return SearchEngine.createJavaSearchScope(new IJavaProject[] { p }); } /*(non-Javadoc) * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#handleDoubleClick() */ protected void handleDoubleClick() { buttonPressed(ADD_ID); } /* (non-Javadoc) * @see org.eclipse.ui.dialogs.FilteredItemsSelectionDialog#handleSelected(org.eclipse.jface.viewers.StructuredSelection) */ protected void handleSelected(StructuredSelection selection) { super.handleSelected(selection); if (selection.size() == 0 && fTypeWizardPage.getSuperInterfaces().size() > fOldContent.size()) { // overrides updateStatus() from handleSelected() if // list of super interfaces was modified // the <code>super.handleSelected(selection)</code> has to be // called, because superclass implementation of this class updates // state of the table. updateStatus(new Status(IStatus.OK, JavaPlugin.getPluginId(), IStatus.OK, "", null)); //$NON-NLS-1$ getButton(ADD_ID).setEnabled(false); } else { // if selection isn't empty, the add button should be enabled in // exactly the same scenarios as the OK button getButton(ADD_ID).setEnabled(getButton(OK).isEnabled()); } } /* (non-Javadoc) * @see org.eclipse.jdt.internal.ui.dialogs.OpenTypeSelectionDialog2#configureShell(org.eclipse.swt.widgets.Shell) */ protected void configureShell(Shell newShell) { super.configureShell(newShell); PlatformUI.getWorkbench().getHelpSystem().setHelp(newShell, IJavaHelpContextIds.SUPER_INTERFACE_SELECTION_DIALOG); } public static String getNameWithTypeParameters(IType type) { String superName = type.getFullyQualifiedName('.'); if (!JavaModelUtil.is50OrHigher(type.getJavaProject())) { return superName; } try { ITypeParameter[] typeParameters = type.getTypeParameters(); if (typeParameters.length > 0) { StringBuffer buf = new StringBuffer(superName); buf.append('<'); for (int k = 0; k < typeParameters.length; k++) { if (k != 0) { buf.append(',').append(' '); } buf.append(typeParameters[k].getElementName()); } buf.append('>'); return buf.toString(); } } catch (JavaModelException e) { // ignore } return superName; } }