| /******************************************************************************* |
| * Copyright (c) 2010, 2017 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.team.internal.ui.wizards; |
| |
| import java.util.Vector; |
| |
| import org.eclipse.jface.dialogs.IDialogSettings; |
| import org.eclipse.ui.PlatformUI; |
| import org.osgi.framework.FrameworkUtil; |
| |
| public abstract class PsfStore { |
| // Most recently used filename is first in the array. |
| // Least recently used filename is at the end of the list. |
| // When the list overflows, items drop off the end. |
| private static final int HISTORY_LENGTH = 10; |
| |
| private static final String STORE_SECTION = "ImportPSFDialog"; //$NON-NLS-1$ |
| |
| private static IDialogSettings _section; |
| |
| protected abstract String getPreviousTag(); |
| protected abstract String getListTag(); |
| |
| public abstract String getSuggestedDefault(); |
| |
| protected String getPrevious() { |
| IDialogSettings section = getSettingsSection(); |
| String retval = section.get(getPreviousTag()); |
| if (retval == null) { |
| retval = ""; //$NON-NLS-1$ |
| } |
| return retval; |
| } |
| |
| public String[] getHistory() { |
| IDialogSettings section = getSettingsSection(); |
| String[] arr = section.getArray(getListTag()); |
| if (arr == null) { |
| arr = new String[0]; |
| } |
| return arr; |
| } |
| |
| public void remember(String filename) { |
| Vector<String> filenames = createVector(getHistory()); |
| if (filenames.contains(filename)) { |
| // The item is in the list. Remove it and add it back at the |
| // beginning. If it already was at the beginning this will be a |
| // waste of time, but it's not even measurable so I don't care. |
| filenames.remove(filename); |
| } |
| // Most recently used filename goes to the beginning of the list |
| filenames.add(0, filename); |
| |
| // Forget any overflowing items |
| while (filenames.size() > HISTORY_LENGTH) { |
| filenames.remove(HISTORY_LENGTH); |
| } |
| |
| // Make it an array |
| String[] arr = filenames.toArray(new String[filenames.size()]); |
| |
| IDialogSettings section = getSettingsSection(); |
| section.put(getListTag(), arr); |
| section.put(getPreviousTag(), filename); |
| } |
| |
| private Vector<String> createVector(String[] arr) { |
| Vector<String> v = new Vector<>(); |
| for (int ix = 0; ix < arr.length; ++ix) { |
| v.add(ix, arr[ix]); |
| } |
| return v; |
| } |
| |
| private IDialogSettings getSettingsSection() { |
| if (_section != null) |
| return _section; |
| |
| IDialogSettings settings = PlatformUI.getDialogSettingsProvider(FrameworkUtil.getBundle(PsfStore.class)).getDialogSettings(); |
| _section = settings.getSection(STORE_SECTION); |
| if (_section != null) |
| return _section; |
| |
| _section = settings.addNewSection(STORE_SECTION); |
| return _section; |
| } |
| } |