Java tutorial
/* ********************************************************************** ** ** Copyright notice ** ** ** ** (c) 2005-2009 RSSOwl Development Team ** ** http://www.rssowl.org/ ** ** ** ** All rights reserved ** ** ** ** This program and the accompanying materials are made available under ** ** the terms of the Eclipse Public License v1.0 which accompanies this ** ** distribution, and is available at: ** ** http://www.rssowl.org/legal/epl-v10.html ** ** ** ** A copy is found in the file epl-v10.html and important notices to the ** ** license from the team is found in the textfile LICENSE.txt distributed ** ** in this package. ** ** ** ** This copyright notice MUST APPEAR in all copies of the file! ** ** ** ** Contributors: ** ** RSSOwl Development Team - initial API and implementation ** ** ** ** ********************************************************************** */ package org.rssowl.ui.internal.dialogs.bookmark; import org.eclipse.core.runtime.IConfigurationElement; import org.eclipse.core.runtime.IExtensionRegistry; import org.eclipse.core.runtime.Platform; import org.eclipse.jface.dialogs.Dialog; import org.eclipse.jface.resource.JFaceResources; import org.eclipse.jface.resource.LocalResourceManager; import org.eclipse.jface.wizard.WizardPage; import org.eclipse.osgi.util.NLS; 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.Label; import org.rssowl.core.Owl; import org.rssowl.core.internal.persist.pref.DefaultPreferences; import org.rssowl.core.util.StringUtils; import org.rssowl.core.util.URIUtils; import org.rssowl.ui.internal.OwlUI; import java.util.ArrayList; import java.util.List; /** * @author bpasero */ public class KeywordSubscriptionPage extends WizardPage { private static final String URL_INPUT_TOKEN = "[:]"; //$NON-NLS-1$ private static final String KEYWORD_FEED_EXTENSION_POINT = "org.rssowl.ui.KeywordFeed"; //$NON-NLS-1$ /* Base class for Search Engines */ static class SearchEngine { private final String fId; private final String fPluginId; private final String fName; private final String fIconPath; private final String fUrl; SearchEngine(String id, String pluginId, String name, String iconPath, String url) { fId = id; fPluginId = pluginId; fName = name; fIconPath = iconPath; fUrl = url; } String getId() { return fId; } String getPluginId() { return fPluginId; } String getName() { return fName; } String getLabel(String keywords) { return NLS.bind(Messages.KeywordSubscriptionPage_N_ON_M, StringUtils.replaceAll(fName, "&", ""), //$NON-NLS-1$//$NON-NLS-2$ keywords); } String getIconPath() { return fIconPath; } String toUrl(String keywords) { keywords = URIUtils.urlEncode(keywords); return StringUtils.replaceAll(fUrl, URL_INPUT_TOKEN, keywords); } } private static final List<SearchEngine> fgSearchEngines = loadSearchEngines(); private SearchEngine fSelectedEngine; /** * @param pageName */ protected KeywordSubscriptionPage(String pageName) { super(pageName, pageName, OwlUI.getImageDescriptor("icons/wizban/bkmrk_wiz.gif")); //$NON-NLS-1$ setMessage(Messages.KeywordSubscriptionPage_CREATE_BOOKMARK); } private static List<SearchEngine> loadSearchEngines() { List<SearchEngine> engines = new ArrayList<SearchEngine>(5); IExtensionRegistry reg = Platform.getExtensionRegistry(); IConfigurationElement elements[] = reg.getConfigurationElementsFor(KEYWORD_FEED_EXTENSION_POINT); /* For each contributed property keyword feed */ for (IConfigurationElement element : elements) { String id = element.getAttribute("id"); //$NON-NLS-1$ String name = element.getAttribute("name"); //$NON-NLS-1$ String iconPath = element.getAttribute("icon"); //$NON-NLS-1$ String url = element.getAttribute("url"); //$NON-NLS-1$ engines.add(new SearchEngine(id, element.getNamespaceIdentifier(), name, iconPath, url)); } return engines; } /** * @return Returns the currently selected SearchEngine. */ public SearchEngine getSelectedEngine() { return fSelectedEngine; } /* * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ /* * @see org.eclipse.jface.dialogs.IDialogPage#createControl(org.eclipse.swt.widgets.Composite) */ public void createControl(Composite parent) { Composite container = new Composite(parent, SWT.NONE); container.setLayout(new GridLayout(1, false)); Label infoLabel = new Label(container, SWT.NONE); infoLabel.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); infoLabel.setText(Messages.KeywordSubscriptionPage_SELECT_SEARCH_ENGINE); Composite contentMargin = new Composite(container, SWT.NONE); contentMargin.setLayoutData(new GridData(SWT.FILL, SWT.BEGINNING, true, false)); contentMargin.setLayout(new GridLayout(3, false)); ((GridLayout) contentMargin.getLayout()).marginTop = 10; ((GridLayout) contentMargin.getLayout()).verticalSpacing = 20; String lastKeywordFeedId = Owl.getPreferenceService().getGlobalScope() .getString(DefaultPreferences.LAST_KEYWORD_FEED); if (!StringUtils.isSet(lastKeywordFeedId)) lastKeywordFeedId = fgSearchEngines.get(0).getId(); for (final SearchEngine engine : fgSearchEngines) { Button button = new Button(contentMargin, SWT.RADIO); button.setText(engine.getName()); if (StringUtils.isSet(engine.getIconPath())) { LocalResourceManager resources = new LocalResourceManager(JFaceResources.getResources(), button); button.setImage(OwlUI.getImage(resources, OwlUI.getImageDescriptor(engine.getPluginId(), engine.getIconPath()))); } button.addSelectionListener(new SelectionAdapter() { @Override public void widgetSelected(SelectionEvent e) { fSelectedEngine = engine; } }); /* Pre-select last used engine */ if (lastKeywordFeedId.equals(engine.getId())) { button.setSelection(true); button.setFocus(); fSelectedEngine = engine; } } Dialog.applyDialogFont(container); setControl(container); } }