Java tutorial
/* * 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 org.apache.directory.studio.aciitemeditor.dialogs; import java.util.Collection; import org.apache.directory.api.ldap.aci.GrantAndDenial; import org.apache.directory.api.ldap.aci.ItemPermission; import org.apache.directory.api.ldap.aci.UserClass; import org.apache.directory.studio.aciitemeditor.ACIItemValueWithContext; import org.apache.directory.studio.aciitemeditor.Activator; import org.apache.directory.studio.aciitemeditor.widgets.ACIItemGrantsAndDenialsComposite; import org.apache.directory.studio.aciitemeditor.widgets.ACIItemUserClassesComposite; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.dialogs.IDialogConstants; import org.eclipse.jface.dialogs.MessageDialog; import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionAdapter; import org.eclipse.swt.events.SelectionEvent; 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.Shell; import org.eclipse.swt.widgets.Spinner; /** * A dialog to compose item permissions. * * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> */ public class ItemPermissionDialog extends Dialog { /** The context */ private ACIItemValueWithContext context; /** The initial value, passed by the constructor */ private ItemPermission initialItemPermission; /** The resulting value returned by getItemPermission() */ private ItemPermission returnItemPermission; /** The precedence checkbox to enable/disable spinner */ private Button precedenceCheckbox = null; /** The precedence spinner */ private Spinner precedenceSpinner = null; /** The widget with user classes table */ private ACIItemUserClassesComposite userClassesComposite; /** The widget with grants and denials table */ private ACIItemGrantsAndDenialsComposite grantsAndDenialsComposite; /** * Creates a new instance of ItemPermissionDialog. * * @param parentShell the shell * @param initialItemPermission the initial item permission * @param context the context */ public ItemPermissionDialog(Shell parentShell, ItemPermission initialItemPermission, ACIItemValueWithContext context) { super(parentShell); super.setShellStyle(super.getShellStyle() | SWT.RESIZE); this.context = context; this.initialItemPermission = initialItemPermission; this.returnItemPermission = null; } /** * Sets the dialog image and text. * * {@inheritDoc} */ protected void configureShell(Shell shell) { super.configureShell(shell); shell.setText(Messages.getString("ItemPermissionDialog.dialog.text")); //$NON-NLS-1$ shell.setImage(Activator.getDefault().getImage(Messages.getString("ItemPermissionDialog.dialog.icon"))); //$NON-NLS-1$ } /** * Reimplementation: Checks for valid syntax and sets the return value. */ protected void okPressed() { try { int precedence = precedenceCheckbox.getSelection() ? precedenceSpinner.getSelection() : -1; Collection<UserClass> userClasses = userClassesComposite.getUserClasses(); Collection<GrantAndDenial> grantsAndDenials = grantsAndDenialsComposite.getGrantsAndDenials(); returnItemPermission = new ItemPermission(precedence, grantsAndDenials, userClasses); super.okPressed(); } catch (Exception e) { MessageDialog.openError(getShell(), Messages.getString("ItemPermissionDialog.error.invalidItemPermission"), e.getMessage()); //$NON-NLS-1$ } } /** * Creates all the dialog content. * * @param parent the parent * * @return the control */ protected Control createDialogArea(Composite parent) { Composite composite = (Composite) super.createDialogArea(parent); GridData gd = new GridData(GridData.FILL_BOTH); gd.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH); gd.heightHint = convertVerticalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH) * 4 / 3; composite.setLayoutData(gd); // precedence Composite spinnerComposite = new Composite(composite, SWT.NONE); spinnerComposite.setLayout(new GridLayout(2, false)); spinnerComposite.setLayoutData(new GridData()); precedenceCheckbox = new Button(spinnerComposite, SWT.CHECK); precedenceCheckbox.setText(Messages.getString("ItemPermissionDialog.precedence.label")); //$NON-NLS-1$ precedenceCheckbox.addSelectionListener(new SelectionAdapter() { public void widgetSelected(SelectionEvent e) { precedenceSpinner.setEnabled(precedenceCheckbox.getSelection()); } }); precedenceSpinner = new Spinner(spinnerComposite, SWT.BORDER); precedenceSpinner.setMinimum(0); precedenceSpinner.setMaximum(255); precedenceSpinner.setDigits(0); precedenceSpinner.setIncrement(1); precedenceSpinner.setPageIncrement(10); precedenceSpinner.setSelection(0); precedenceSpinner.setEnabled(false); GridData precedenceGridData = new GridData(); precedenceGridData.grabExcessHorizontalSpace = true; precedenceGridData.verticalAlignment = GridData.CENTER; precedenceGridData.horizontalAlignment = GridData.BEGINNING; precedenceGridData.widthHint = 3 * 12; precedenceSpinner.setLayoutData(precedenceGridData); // user classes userClassesComposite = new ACIItemUserClassesComposite(composite, SWT.NONE); userClassesComposite.setContext(context); // grants and denial grantsAndDenialsComposite = new ACIItemGrantsAndDenialsComposite(composite, SWT.NONE); // set initial values if (initialItemPermission != null) { if ((initialItemPermission.getPrecedence() != null) && (initialItemPermission.getPrecedence() > -1)) { precedenceCheckbox.setSelection(true); precedenceSpinner.setEnabled(true); precedenceSpinner.setSelection(initialItemPermission.getPrecedence()); } userClassesComposite.setUserClasses(initialItemPermission.getUserClasses()); grantsAndDenialsComposite.setGrantsAndDenials(initialItemPermission.getGrantsAndDenials()); } applyDialogFont(composite); return composite; } /** * Returns the item permission. Returns null if Cancel button was pressed. * * @return the composed item permission or null */ public ItemPermission getItemPermission() { return returnItemPermission; } }