Java tutorial
/* * Copyright 2014 * * Licensed to the Apache Software Foundation (ASF) under one or more contributor license * agreements. See the NOTICE file distributed with this work for additional information regarding * copyright ownership. The ASF licenses this file to You 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. */ package net.sf.guavaeclipse.dialog; import java.util.ArrayList; import java.util.List; import net.sf.guavaeclipse.dto.MethodInsertionPoint; import org.eclipse.jdt.core.IField; import org.eclipse.jdt.core.IJavaElement; import org.eclipse.jdt.core.IMethod; import org.eclipse.jdt.core.IType; import org.eclipse.jdt.core.JavaModelException; import org.eclipse.jface.viewers.CheckboxTableViewer; import org.eclipse.jface.viewers.ILabelProvider; import org.eclipse.jface.viewers.IStructuredContentProvider; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridData; import org.eclipse.swt.layout.GridLayout; 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.ui.PlatformUI; import org.eclipse.ui.dialogs.SelectionDialog; import org.eclipse.ui.internal.WorkbenchMessages; @SuppressWarnings({ "restriction", "rawtypes", "unchecked" }) public class GenericDialogBox extends SelectionDialog { private static String SELECT_ALL_TITLE = WorkbenchMessages.SelectionDialog_selectLabel; private static String DESELECT_ALL_TITLE = WorkbenchMessages.SelectionDialog_deselectLabel; private List<String> inputElement; private ILabelProvider labelProvider; private IStructuredContentProvider contentProvider; private CheckboxTableViewer listViewer; private static final int SIZING_SELECTION_WIDGET_HEIGHT = 250; private static final int SIZING_SELECTION_WIDGET_WIDTH = 300; private Combo typeCombo; private MethodInsertionPoint insertionPoint; private boolean cancelPressed; public GenericDialogBox(Shell parentShell, MethodInsertionPoint insertionPoint, List<String> fieldNames, IStructuredContentProvider contentProvider, ILabelProvider labelProvider, String message) throws JavaModelException { super(parentShell); cancelPressed = true; setTitle(message); this.insertionPoint = insertionPoint; this.inputElement = fieldNames; this.contentProvider = contentProvider; this.labelProvider = labelProvider; if (message != null) { setMessage(message); } else { setMessage(WorkbenchMessages.ListSelection_message); } } private void addSelectionButtons(Composite composite) { Composite buttonComposite = new Composite(composite, 0); GridLayout layout = new GridLayout(); layout.numColumns = 0; layout.marginWidth = 0; layout.horizontalSpacing = convertHorizontalDLUsToPixels(4); buttonComposite.setLayout(layout); buttonComposite.setLayoutData(new GridData(0x1000008, 128, true, false)); Button selectButton = createButton(buttonComposite, 18, SELECT_ALL_TITLE, false); SelectionListener listener = new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { listViewer.setAllChecked(true); } }; selectButton.addSelectionListener(listener); Button deselectButton = createButton(buttonComposite, 19, DESELECT_ALL_TITLE, false); listener = new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { listViewer.setAllChecked(false); } }; deselectButton.addSelectionListener(listener); } private void checkInitialSelections() { for (String itemToCheck : this.inputElement) { listViewer.setChecked(itemToCheck, true); } } @Override protected void configureShell(Shell shell) { super.configureShell(shell); PlatformUI.getWorkbench().getHelpSystem().setHelp(shell, "org.eclipse.ui.list_selection_dialog_context"); } @Override protected Control createDialogArea(Composite parent) { try { Composite composite = (Composite) super.createDialogArea(parent); initializeDialogUnits(composite); createMessageArea(composite); listViewer = CheckboxTableViewer.newCheckList(composite, 2048); GridData data = new GridData(1808); data.heightHint = SIZING_SELECTION_WIDGET_HEIGHT; data.widthHint = SIZING_SELECTION_WIDGET_WIDTH; listViewer.getTable().setLayoutData(data); listViewer.setLabelProvider(labelProvider); listViewer.setContentProvider(contentProvider); addTypeCombo(composite); addSelectionButtons(composite); initializeViewer(); if (getInitialElementSelections().isEmpty()) { checkInitialSelections(); } applyDialogFont(composite); return composite; } catch (JavaModelException e) { e.printStackTrace(); } return parent; } private void addTypeCombo(Composite composite) throws JavaModelException { GridData data1 = new GridData(1808); Label label = new Label(composite, 8); label.setText("Insertion Point:"); label.setLayoutData(data1); typeCombo = new Combo(composite, 8); typeCombo.setLayoutData(data1); int defaultSelectionIndex = 1; typeCombo.add("Last Element"); IJavaElement elements[] = insertionPoint.getInsertionType().getChildren(); IJavaElement aijavaelement[]; int k = (aijavaelement = elements).length; for (int i = 0; i < k; i++) { IJavaElement javaElement = aijavaelement[i]; if (javaElement instanceof IType) typeCombo.add((new StringBuilder("Before '")).append(javaElement.getElementName()).append("'") .toString()); else if (javaElement instanceof IMethod) typeCombo.add((new StringBuilder("Before '")).append(javaElement.getElementName()).append("()'") .toString()); else if (javaElement instanceof IField) typeCombo.add((new StringBuilder("Before '")).append(javaElement.getElementName()).append("'") .toString()); } if (insertionPoint.getInsertionMember() == null) { typeCombo.select(0); } else { IJavaElement aijavaelement1[]; int l = (aijavaelement1 = elements).length; for (int j = 0; j < l; j++) { IJavaElement javaElement = aijavaelement1[j]; if (javaElement.equals(insertionPoint.getInsertionMember())) { typeCombo.select(defaultSelectionIndex); break; } defaultSelectionIndex++; } } listViewer.setAllChecked(true); } protected CheckboxTableViewer getViewer() { return listViewer; } private void initializeViewer() { listViewer.setInput(inputElement); } @Override protected void okPressed() { cancelPressed = false; Object children[] = contentProvider.getElements(inputElement); if (children != null) { ArrayList list = new ArrayList(); for (int i = 0; i < children.length; i++) { Object element = children[i]; if (listViewer.getChecked(element)) list.add(element); } setResult(list); } try { if (typeCombo.getText().equals("Last Element")) { insertionPoint.setInsertionMember(null); } else { int i = typeCombo.getSelectionIndex(); insertionPoint.setInsertionMember(insertionPoint.getInsertionType().getChildren()[i - 1]); } } catch (JavaModelException e) { e.printStackTrace(); } super.okPressed(); } public MethodInsertionPoint getInsertionPoint() { return insertionPoint; } public boolean isCancelPressed() { return cancelPressed; } public List<String> getResultAsList() { Object result[] = getResult(); if (result == null) { return null; } List<String> fields = new ArrayList<String>(result.length); for (int i = 0; i < result.length; i++) { fields.add((String) result[i]); } return fields; } }