| /******************************************************************************* |
| * Copyright (c) 2000, 2011 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.preferences; |
| |
| import java.util.Map; |
| |
| import org.eclipse.swt.widgets.Composite; |
| import org.eclipse.swt.widgets.Control; |
| |
| import org.eclipse.core.runtime.IPath; |
| |
| import org.eclipse.jface.dialogs.Dialog; |
| import org.eclipse.jface.dialogs.MessageDialog; |
| import org.eclipse.jface.preference.PreferencePage; |
| |
| import org.eclipse.ui.IWorkbench; |
| import org.eclipse.ui.IWorkbenchPreferencePage; |
| import org.eclipse.ui.PlatformUI; |
| |
| import org.eclipse.jdt.core.JavaCore; |
| |
| import org.eclipse.jdt.ui.JavaUI; |
| |
| import org.eclipse.jdt.internal.ui.IJavaHelpContextIds; |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.wizards.buildpaths.VariableBlock; |
| |
| public class ClasspathVariablesPreferencePage extends PreferencePage implements IWorkbenchPreferencePage { |
| |
| public static final String ID= JavaUI.ID_CLASSPATH_VARIABLES_PREFERENCE_PAGE; |
| |
| public static final String DATA_SELECT_VARIABLE= "ClasspathVariablesPreferencePage.select_var"; //$NON-NLS-1$ |
| |
| private VariableBlock fVariableBlock; |
| private String fStoredSettings; |
| |
| /** |
| * Constructor for ClasspathVariablesPreferencePage |
| */ |
| public ClasspathVariablesPreferencePage() { |
| setPreferenceStore(JavaPlugin.getDefault().getPreferenceStore()); |
| fVariableBlock= new VariableBlock(true, null); |
| fStoredSettings= null; |
| |
| // title only used when page is shown programatically |
| setTitle(PreferencesMessages.ClasspathVariablesPreferencePage_title); |
| setDescription(PreferencesMessages.ClasspathVariablesPreferencePage_description); |
| noDefaultAndApplyButton(); |
| } |
| |
| @Override |
| public void createControl(Composite parent) { |
| super.createControl(parent); |
| PlatformUI.getWorkbench().getHelpSystem().setHelp(getControl(), IJavaHelpContextIds.CP_VARIABLES_PREFERENCE_PAGE); |
| } |
| |
| /* |
| * @see PreferencePage#createContents(org.eclipse.swt.widgets.Composite) |
| */ |
| @Override |
| protected Control createContents(Composite parent) { |
| Control result= fVariableBlock.createContents(parent); |
| Dialog.applyDialogFont(result); |
| return result; |
| } |
| |
| /* |
| * @see IWorkbenchPreferencePage#init(org.eclipse.ui.IWorkbench) |
| */ |
| @Override |
| public void init(IWorkbench workbench) { |
| } |
| |
| /* |
| * @see PreferencePage#performDefaults() |
| */ |
| @Override |
| protected void performDefaults() { |
| // not used (constructor calls noDefaultAndApplyButton()) |
| // fVariableBlock.performDefaults(); |
| super.performDefaults(); |
| } |
| |
| /* |
| * @see PreferencePage#performOk() |
| */ |
| @Override |
| public boolean performOk() { |
| JavaPlugin.flushInstanceScope(); |
| return fVariableBlock.performOk(); |
| } |
| |
| @Override |
| public void setVisible(boolean visible) { |
| // check if the stored settings have changed |
| if (visible) { |
| if (fStoredSettings != null && !fStoredSettings.equals(getCurrentSettings())) { |
| fVariableBlock.refresh(null); |
| } |
| } else { |
| if (fVariableBlock.hasChanges()) { |
| String title= PreferencesMessages.ClasspathVariablesPreferencePage_savechanges_title; |
| String message= PreferencesMessages.ClasspathVariablesPreferencePage_savechanges_message; |
| if (MessageDialog.openQuestion(getShell(), title, message)) { |
| performOk(); |
| } |
| fVariableBlock.setChanges(false); // forget |
| } |
| fStoredSettings= getCurrentSettings(); |
| } |
| super.setVisible(visible); |
| } |
| |
| private String getCurrentSettings() { |
| StringBuilder buf= new StringBuilder(); |
| for (String curr : JavaCore.getClasspathVariableNames()) { |
| buf.append(curr).append('\0'); |
| IPath val= JavaCore.getClasspathVariable(curr); |
| if (val != null) { |
| buf.append(val.toString()); |
| } |
| buf.append('\0'); |
| } |
| return buf.toString(); |
| } |
| |
| @Override |
| public void applyData(Object data) { |
| if (data instanceof Map && fVariableBlock != null) { |
| Object id= ((Map<?, ?>) data).get(DATA_SELECT_VARIABLE); |
| if (id instanceof String) { |
| fVariableBlock.setSelection((String) id); |
| } |
| } |
| super.applyData(data); |
| } |
| |
| } |