| /******************************************************************************* |
| * Copyright (c) 2004, 2017 IBM Corporation and others. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0. |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.dltk.debug.ui.preferences.dialogs; |
| |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.dltk.debug.ui.preferences.Filter; |
| import org.eclipse.dltk.debug.ui.preferences.ScriptDebugPreferencesMessages; |
| import org.eclipse.dltk.ui.DLTKUIPlugin; |
| import org.eclipse.dltk.ui.dialogs.StatusInfo; |
| import org.eclipse.jface.dialogs.IDialogConstants; |
| import org.eclipse.jface.dialogs.IDialogSettings; |
| import org.eclipse.jface.dialogs.StatusDialog; |
| import org.eclipse.swt.SWT; |
| 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.Label; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.swt.widgets.Text; |
| |
| public class CreateStepFilterDialog extends StatusDialog { |
| |
| private static final String DEFAULT_NEW_FILTER_TEXT = ""; //$NON-NLS-1$ |
| |
| private Text text; |
| private Filter filter; |
| private Button okButton; |
| |
| private boolean filterValid; |
| private boolean okClicked; |
| private Filter[] existingFilters; |
| |
| private CreateStepFilterDialog(Shell parent, Filter filter, |
| Filter[] existingFilters) { |
| super(parent); |
| setShellStyle(getShellStyle() | SWT.RESIZE); |
| this.filter = filter; |
| this.existingFilters = existingFilters; |
| |
| setTitle(ScriptDebugPreferencesMessages.CreateStepFilterDialog_2); |
| setStatusLineAboveButtons(false); |
| |
| } |
| |
| static public Filter showCreateStepFilterDialog(Shell parent, |
| Filter[] existingFilters) { |
| CreateStepFilterDialog createStepFilterDialog = new CreateStepFilterDialog( |
| parent, new Filter(DEFAULT_NEW_FILTER_TEXT, true, 0), |
| existingFilters); |
| createStepFilterDialog.create(); |
| createStepFilterDialog.open(); |
| |
| return createStepFilterDialog.filter; |
| } |
| |
| @Override |
| protected void createButtonsForButtonBar(Composite parent) { |
| okButton = createButton(parent, IDialogConstants.OK_ID, |
| IDialogConstants.OK_LABEL, true); |
| okButton.setEnabled(false); |
| createButton(parent, IDialogConstants.CANCEL_ID, |
| IDialogConstants.CANCEL_LABEL, false); |
| } |
| |
| @Override |
| protected Control createDialogArea(Composite parent) { |
| Composite container = (Composite) super.createDialogArea(parent); |
| |
| GridLayout gridLayout = new GridLayout(); |
| gridLayout.numColumns = 2; |
| gridLayout.marginHeight = 15; |
| gridLayout.marginWidth = 15; |
| container.setLayout(gridLayout); |
| |
| int textStyles = SWT.SINGLE | SWT.LEFT; |
| Label label = new Label(container, textStyles); |
| label.setText(ScriptDebugPreferencesMessages.CreateStepFilterDialog_3); |
| label.setFont(container.getFont()); |
| |
| // create & configure Text widget for editor |
| // Fix for bug 1766. Border behavior on for text fields varies per |
| // platform. |
| // On Motif, you always get a border, on other platforms, |
| // you don't. Specifying a border on Motif results in the characters |
| // getting pushed down so that only there very tops are visible. Thus, |
| // we have to specify different style constants for the different |
| // platforms. |
| if (!SWT.getPlatform().equals("motif")) { //$NON-NLS-1$ |
| textStyles |= SWT.BORDER; |
| } |
| |
| text = new Text(container, textStyles); |
| GridData gridData = new GridData(GridData.FILL_HORIZONTAL); |
| gridData.horizontalSpan = 1; |
| gridData.widthHint = 300; |
| text.setLayoutData(gridData); |
| text.setFont(container.getFont()); |
| |
| text.addModifyListener(e -> { |
| validateChange(); |
| if (!filterValid) |
| updateStatus(new StatusInfo(IStatus.ERROR, |
| ScriptDebugPreferencesMessages.CreateStepFilterDialog_4)); |
| else if (isDuplicateFilter(text.getText().trim())) { |
| updateStatus(new StatusInfo(IStatus.WARNING, |
| ScriptDebugPreferencesMessages.CreateStepFilterDialog_5)); |
| return; |
| } else |
| updateStatus(new StatusInfo()); |
| }); |
| |
| return container; |
| } |
| |
| private void validateChange() { |
| String trimmedValue = text.getText().trim(); |
| |
| if (trimmedValue.length() > 0 && validateInput(trimmedValue)) { |
| okButton.setEnabled(true); |
| filter.setName(text.getText()); |
| filterValid = true; |
| } else { |
| okButton.setEnabled(false); |
| filter.setName(DEFAULT_NEW_FILTER_TEXT); |
| filterValid = false; |
| } |
| } |
| |
| private boolean isDuplicateFilter(String trimmedValue) { |
| for (int i = 0; i < existingFilters.length; i++) |
| if (existingFilters[i].getName().equals(trimmedValue)) |
| return true; |
| return false; |
| } |
| |
| /** |
| * A valid step filter is simply one that is a valid Java identifier. and, |
| * as defined in the JDI spec, the regular expressions used for step |
| * filtering must be limited to exact matches or patterns that begin with |
| * '*' or end with '*'. Beyond this, a string cannot be validated as |
| * corresponding to an existing type or package (and this is probably not |
| * even desirable). |
| */ |
| private boolean validateInput(String trimmedValue) { |
| char firstChar = trimmedValue.charAt(0); |
| if (!Character.isJavaIdentifierStart(firstChar)) { |
| if (!(firstChar == '*')) { |
| return false; |
| } |
| } |
| int length = trimmedValue.length(); |
| for (int i = 1; i < length; i++) { |
| char c = trimmedValue.charAt(i); |
| if (!Character.isJavaIdentifierPart(c)) { |
| if (c == '.' && i != (length - 1)) { |
| continue; |
| } |
| if (c == '*' && i == (length - 1)) { |
| continue; |
| } |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| /** |
| * Returns the name of the section that this dialog stores its settings in |
| * |
| * @return String |
| */ |
| protected String getDialogSettingsSectionName() { |
| return DLTKUIPlugin.PLUGIN_ID + ".CREATE_STEP_FILTER_DIALOG_SECTION"; //$NON-NLS-1$ |
| } |
| |
| @Override |
| public boolean close() { |
| if (!okClicked) { |
| filterValid = false; |
| filter = null; |
| } |
| return super.close(); |
| } |
| |
| @Override |
| protected IDialogSettings getDialogBoundsSettings() { |
| IDialogSettings settings = DLTKUIPlugin.getDefault() |
| .getDialogSettings(); |
| IDialogSettings section = settings |
| .getSection(getDialogSettingsSectionName()); |
| if (section == null) { |
| section = settings.addNewSection(getDialogSettingsSectionName()); |
| } |
| return section; |
| } |
| |
| @Override |
| protected void okPressed() { |
| okClicked = true; |
| super.okPressed(); |
| } |
| } |