Java tutorial
/***************************************************************************** * This file is part of the Prolog Development Tool (PDT) * * WWW: http://sewiki.iai.uni-bonn.de/research/pdt/start * Mail: pdt@lists.iai.uni-bonn.de * Copyright (C): 2004-2012, CS Dept. III, University of Bonn * * All rights reserved. This program is made available under the terms * of the Eclipse Public License v1.0 which accompanies this distribution, * and is available at http://www.eclipse.org/legal/epl-v10.html * ****************************************************************************/ package pdt.y.preferences.controls; import static pdt.y.preferences.PreferenceConstants.BASE_TEMPLATE; import static pdt.y.preferences.PreferenceConstants.BASE_TEMPLATE_DEFAULT; import java.io.FileNotFoundException; import java.util.Hashtable; import java.util.Set; import org.eclipse.core.runtime.IProgressMonitor; import org.eclipse.core.runtime.IStatus; import org.eclipse.core.runtime.Status; import org.eclipse.jface.preference.FieldEditor; 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.layout.RowLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Combo; import org.eclipse.swt.widgets.Composite; import org.eclipse.swt.widgets.FileDialog; import org.eclipse.swt.widgets.Group; import org.eclipse.swt.widgets.Label; import org.eclipse.swt.widgets.MessageBox; import org.eclipse.swt.widgets.Text; import org.eclipse.ui.progress.UIJob; import pdt.y.preferences.PreferenceInitializer; public class SkinsEditor extends FieldEditor { private Combo templatesCombo; private Text newTemplateName; public SkinsEditor(Composite parent) { createControl(parent); new RowLayout(SWT.HORIZONTAL); } protected Composite wrap(Composite parent) { Composite row = new Composite(parent, SWT.NONE); RowLayout layout = new RowLayout(SWT.HORIZONTAL); layout.spacing = 10; layout.marginTop = 5; layout.marginLeft = 9; row.setLayout(layout); return row; } @Override protected void adjustForNumColumns(int numColumns) { } @Override protected void doFillIntoGrid(Composite parent, int numColumns) { new Label(wrap(parent), SWT.NONE).setText("A \"skin\" is a set of Focus View preferences."); GridData fullRowgd = new GridData(GridData.FILL_HORIZONTAL); fullRowgd.horizontalSpan = numColumns; Composite row = wrap(parent); new Label(row, SWT.NONE).setText("Current skin: "); templatesCombo = new Combo(row, SWT.READ_ONLY); createRemoveAllTemplatesButton(row); //createImportButton(parent).setLayoutData(rdBtns); // new Label(container, SWT.NONE).setText("Save current preferences as template:"); // newTemplateName = new Text(container, SWT.BORDER); // newTemplateName.setLayoutData(gd); // createSavePreferencesSetButton(container).setLayoutData(gdBtns); Group importExportButtonsContainer = new Group(parent, SWT.NONE); importExportButtonsContainer.setText("Save skins"); importExportButtonsContainer.setLayoutData(fullRowgd); GridLayout bottomLayout = new GridLayout(); bottomLayout.horizontalSpacing = 10; bottomLayout.marginWidth = 10; bottomLayout.marginHeight = 10; bottomLayout.numColumns = 2; importExportButtonsContainer.setLayout(bottomLayout); createSaveCurrentTemplateToFileButton(importExportButtonsContainer); createLoadTemplateFromFileButton(importExportButtonsContainer); } private Button createRemoveAllTemplatesButton(Composite container) { Button button = new Button(container, SWT.PUSH); button.setText(" Delete current skin "); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { MessageBox mb = new MessageBox(getPage().getShell(), SWT.APPLICATION_MODAL | SWT.OK | SWT.CANCEL); mb.setText("WARNING"); mb.setMessage("All base templates except default will be removed!"); if (mb.open() == SWT.OK) { PreferenceInitializer.removeAllTemplates(getPreferenceStore()); updateUI(); } } }); return button; } private void createLoadTemplateFromFileButton(Composite container) { Button button = new Button(container, SWT.PUSH); button.setText(" Load template from file "); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { FileDialog fd = new FileDialog(getPage().getShell(), SWT.OPEN); fd.setText("Open"); String path = fd.open(); if (path != null) { try { PreferenceInitializer.loadPreferencesFromFile(getPreferenceStore(), path); clearErrorMessage(); showInfo("Template loaded and applied"); } catch (Exception ex) { showMessage(ex.getMessage()); } } } }); } private void createSaveCurrentTemplateToFileButton(Composite container) { Button button = new Button(container, SWT.PUSH); button.setText(" Save template to file "); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { FileDialog fd = new FileDialog(getPage().getShell(), SWT.SAVE); fd.setText("Save"); String path = fd.open(); if (path != null) { try { PreferenceInitializer.saveCurrentPreferencesToFile(getPreferenceStore(), path); clearErrorMessage(); showInfo("Template saved"); } catch (FileNotFoundException ex) { showErrorMessage(ex.getMessage()); } } } }); } protected Button createImportButton(Composite container) { Button button = new Button(container, SWT.PUSH); button.setText("Apply"); button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { MessageBox mb = new MessageBox(getPage().getShell(), SWT.APPLICATION_MODAL | SWT.OK | SWT.CANCEL); mb.setText("WARNING"); mb.setMessage("Current focusview preferences will be overriden!"); if (mb.open() == SWT.OK) { PreferenceInitializer.applyTemplate(getPreferenceStore(), templatesCombo.getItem(templatesCombo.getSelectionIndex())); updateUI(); } } }); return button; } @SuppressWarnings("unused") private Button createSavePreferencesSetButton(Composite container) { Button button = new Button(container, SWT.PUSH); button.setText("Save"); button.addSelectionListener(new SelectionAdapter() { @Override @SuppressWarnings("deprecation") public void widgetSelected(SelectionEvent e) { try { getPreferencePage().performOk(); PreferenceInitializer.saveCurrentTemplate(getPreferenceStore(), newTemplateName.getText()); clearErrorMessage(); updateUI(); clearErrorMessage(); } catch (IllegalArgumentException ex) { showErrorMessage(ex.getMessage()); } } }); return button; } protected void updateUI() { new UIJob("Updating...") { @Override public IStatus runInUIThread(IProgressMonitor monitor) { newTemplateName.setText(""); loadItems(); return Status.OK_STATUS; } }.schedule(); } @Override protected void doLoad() { loadItems(); } @Override protected void doLoadDefault() { loadItems(); } private void loadItems() { if (templatesCombo == null) return; templatesCombo.removeAll(); templatesCombo.add(BASE_TEMPLATE_DEFAULT); templatesCombo.select(0); String val = getPreferenceStore().getString(BASE_TEMPLATE); Hashtable<String, String[][]> storedPrefs = PreferenceInitializer.getTemplates(getPreferenceStore()); if (storedPrefs != null) { Set<String> keys = storedPrefs.keySet(); int i = 1; for (String k : keys) { templatesCombo.add(k); if (k.equals(val)) { templatesCombo.select(i); } i++; } } } @Override protected void doStore() { } @Override public int getNumberOfControls() { return 1; } private void showInfo(String string) { MessageBox mb = new MessageBox(getPage().getShell(), SWT.APPLICATION_MODAL | SWT.OK); mb.setText("Info"); mb.setMessage(string); mb.open(); } }