--- /dev/null
+/**********************************************************************
+ * Copyright (c) 2003 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Common Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/cpl-v10.html
+ *
+ * Contributors:
+ * IBM - Initial API and implementation
+ **********************************************************************/
+package org.eclipse.webbrowser.internal;
+
+import java.io.ByteArrayInputStream;
+import java.io.InputStreamReader;
+import java.io.Reader;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.core.runtime.Preferences;
+import org.eclipse.core.runtime.Status;
+import org.eclipse.ui.IMemento;
+import org.eclipse.ui.XMLMemento;
+import org.eclipse.webbrowser.IExternalWebBrowser;
+import org.eclipse.webbrowser.IExternalWebBrowserWorkingCopy;
+import org.eclipse.webbrowser.IInternalWebBrowser;
+import org.eclipse.webbrowser.IWebBrowser;
+/**
+ *
+ */
+public class BrowserManager {
+ private static final int ADD = 0;
+ private static final int CHANGE = 1;
+ private static final int REMOVE = 2;
+
+ protected List browsers;
+ protected IWebBrowser currentBrowser;
+ protected List browserListeners = new ArrayList();
+
+ private Preferences.IPropertyChangeListener pcl;
+ protected boolean ignorePreferenceChanges = false;
+
+ protected static BrowserManager instance;
+
+ public static BrowserManager getInstance() {
+ if (instance == null)
+ instance = new BrowserManager();
+ return instance;
+ }
+
+ private BrowserManager() {
+ pcl = new Preferences.IPropertyChangeListener() {
+ public void propertyChange(Preferences.PropertyChangeEvent event) {
+ if (ignorePreferenceChanges)
+ return;
+ String property = event.getProperty();
+ if (property.equals("browsers")) {
+ loadBrowsers();
+ }
+ }
+ };
+
+ WebBrowserUIPlugin.getInstance().getPluginPreferences().addPropertyChangeListener(pcl);
+ }
+
+ protected void dispose() {
+ WebBrowserUIPlugin.getInstance().getPluginPreferences().removePropertyChangeListener(pcl);
+
+ // clear the cache
+ Iterator iterator = browsers.iterator();
+ while (iterator.hasNext()) {
+ Object obj = iterator.next();
+ if (obj instanceof IInternalWebBrowser) {
+ IInternalWebBrowser wb = (IInternalWebBrowser) obj;
+ if (wb.getClearHistoryOnExit())
+ WebBrowserPreference.setInternalWebBrowserHistory(null);
+ }
+ }
+ }
+
+ public IExternalWebBrowserWorkingCopy createExternalWebBrowser() {
+ return new ExternalWebBrowserWorkingCopy();
+ }
+
+ public List getWebBrowsers() {
+ if (browsers == null)
+ loadBrowsers();
+ return new ArrayList(browsers);
+ }
+
+ protected void loadBrowsers() {
+ Trace.trace(Trace.FINEST, "Loading web browsers");
+
+ Preferences prefs = WebBrowserUIPlugin.getInstance().getPluginPreferences();
+ String xmlString = prefs.getString("browsers");
+ if (xmlString != null && xmlString.length() > 0) {
+ browsers = new ArrayList();
+
+ try {
+ ByteArrayInputStream in = new ByteArrayInputStream(xmlString.getBytes());
+ Reader reader = new InputStreamReader(in);
+ IMemento memento = XMLMemento.createReadRoot(reader);
+
+ IMemento child = memento.getChild("internal");
+ if (child != null) {
+ InternalWebBrowser browser = new InternalWebBrowser();
+ browser.load(child);
+ browsers.add(browser);
+ }
+
+ IMemento[] children = memento.getChildren("external");
+ int size = children.length;
+ for (int i = 0; i < size; i++) {
+ ExternalWebBrowser browser = new ExternalWebBrowser();
+ browser.load(children[i]);
+ browsers.add(browser);
+ }
+
+ Integer current = memento.getInteger("current");
+ if (current != null) {
+ currentBrowser = (IWebBrowser) browsers.get(current.intValue());
+ }
+ } catch (Exception e) {
+ Trace.trace(Trace.WARNING, "Could not load browsers: " + e.getMessage());
+ }
+ addInternalBrowser(browsers);
+ if (currentBrowser == null && browsers.size() > 0)
+ currentBrowser = (IWebBrowser) browsers.get(0);
+ } else {
+ setupDefaultBrowsers();
+ saveBrowsers();
+ return;
+ }
+ }
+
+ protected void saveBrowsers() {
+ try {
+ ignorePreferenceChanges = true;
+ XMLMemento memento = XMLMemento.createWriteRoot("web-browsers");
+
+ Iterator iterator = browsers.iterator();
+ while (iterator.hasNext()) {
+ Object obj = iterator.next();
+ if (obj instanceof InternalWebBrowser) {
+ InternalWebBrowser browser = (InternalWebBrowser) obj;
+ IMemento child = memento.createChild("internal");
+ browser.save(child);
+ } else if (obj instanceof ExternalWebBrowser) {
+ ExternalWebBrowser browser = (ExternalWebBrowser) obj;
+ IMemento child = memento.createChild("external");
+ browser.save(child);
+ }
+ }
+
+ memento.putInteger("current", browsers.indexOf(currentBrowser));
+
+ StringWriter writer = new StringWriter();
+ memento.save(writer);
+ String xmlString = writer.getBuffer().toString();
+ Preferences prefs = WebBrowserUIPlugin.getInstance().getPluginPreferences();
+ prefs.setValue("browsers", xmlString);
+ WebBrowserUIPlugin.getInstance().savePluginPreferences();
+ } catch (Exception e) {
+ Trace.trace(Trace.SEVERE, "Could not save browsers", e);
+ }
+ ignorePreferenceChanges = false;
+ }
+
+ protected void addInternalBrowser(List browserList) {
+ if (browserList == null)
+ return;
+
+ Iterator iterator = browserList.iterator();
+ while (iterator.hasNext()) {
+ IWebBrowser browser = (IWebBrowser) iterator.next();
+ if (browser instanceof IInternalWebBrowser)
+ return;
+ }
+
+ // add the internal browser if we can
+ WebBrowserUIPlugin.getInstance().getLog().log(new Status(IStatus.INFO,
+ WebBrowserUIPlugin.PLUGIN_ID, 0, WebBrowserUtil.canUseInternalWebBrowser() + "/" + WebBrowserUtil.isInternalBrowserOperational(), null));
+ if (!WebBrowserUtil.canUseInternalWebBrowser() || !WebBrowserUtil.isInternalBrowserOperational())
+ return;
+
+ browserList.add(0, new InternalWebBrowser());
+ }
+
+ private void setupDefaultBrowsers() {
+ browsers = new ArrayList();
+
+ addInternalBrowser(browsers);
+
+ // handle all the EXTERNAL browsers by criteria and add those too at startup
+ WebBrowserUtil.addFoundBrowsers(browsers);
+
+ // by default, if internal is there, that is current, else set the first external one
+ if (!browsers.isEmpty())
+ currentBrowser = (IWebBrowser) browsers.get(0);
+ }
+
+ protected void addBrowser(IExternalWebBrowser browser) {
+ if (browsers == null)
+ loadBrowsers();
+ if (!browsers.contains(browser))
+ browsers.add(browser);
+ fireWebBrowserEvent(browser, ADD);
+ saveBrowsers();
+ }
+
+ protected void removeWebBrowser(IExternalWebBrowser browser) {
+ if (browsers == null)
+ loadBrowsers();
+ browsers.remove(browser);
+ fireWebBrowserEvent(browser, REMOVE);
+ }
+
+ // Internal Web browser CAN be "edited", just not created or removed
+ protected void browserChanged(IWebBrowser browser) {
+ fireWebBrowserEvent(browser, CHANGE);
+ saveBrowsers();
+ }
+
+ /**
+ * Add Web browser listener.
+ * @param listener
+ */
+ public void addWebBrowserListener(IWebBrowserListener listener) {
+ browserListeners.add(listener);
+ }
+
+ /**
+ * Remove Web browser listener.
+ * @param listener
+ */
+ public void removeWebBrowserListener(IWebBrowserListener listener) {
+ browserListeners.remove(listener);
+ }
+
+ /**
+ * Fire a Web browser event.
+ * @param browser
+ * @param type
+ */
+ protected void fireWebBrowserEvent(IWebBrowser browser, int type) {
+ Object[] obj = browserListeners.toArray();
+
+ int size = obj.length;
+ for (int i = 0; i < size; i++) {
+ IWebBrowserListener listener = (IWebBrowserListener) obj[i];
+ if (type == ADD)
+ listener.browserAdded(browser);
+ else if (type == CHANGE)
+ listener.browserChanged(browser);
+ else if (type == REMOVE)
+ listener.browserRemoved(browser);
+ }
+ }
+
+ public IWebBrowser getCurrentWebBrowser() {
+ if (browsers == null)
+ loadBrowsers();
+
+ return currentBrowser;
+ }
+
+ public void setCurrentWebBrowser(IWebBrowser wb) {
+ if (browsers.contains(wb))
+ currentBrowser = wb;
+ saveBrowsers();
+ }
+}
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git://git.phpeclipse.com / phpeclipse.git / blobdiff