Add getInstance and simple tabbed browser example

BenjaminFaal · Jan 10, 2021 · 162a073 · 162a073
1 parent 8b64c90
commit 162a073
Show file tree

Hide file tree

Showing 2 changed files with 106 additions and 4 deletions.
diff --git a/src/main/java/com/benjaminfaal/jcef/loader/JCefLoader.java b/src/main/java/com/benjaminfaal/jcef/loader/JCefLoader.java
@@ -23,6 +23,13 @@ public class JCefLoader {
 
     private static boolean loaded;
 
+    public static CefApp getInstance() {
+        if (!loaded) {
+            throw new IllegalStateException("JCEF is not loaded yet, use installAndLoad to load and create an instance");
+        }
+        return CefApp.getInstance();
+    }
+
     /**
      * Installs the default JCEF version to the destination and loads a {@link CefApp}.
      *
@@ -45,6 +52,9 @@ public static CefApp installAndLoad(Path destination, CefSettings settings, Stri
      * @return a {@link CefApp} loaded from the destination directory
      */
     public static CefApp installAndLoad(String version, Path destination, CefSettings settings, String... args) throws IOException {
+        if (loaded) {
+            return CefApp.getInstance();
+        }
         if (Files.exists(destination) && !Files.isDirectory(destination)) {
             throw new IllegalArgumentException("Destination: " + destination + " must be a directory");
         }

diff --git a/src/test/java/JCefLoaderTest.java b/src/test/java/JCefLoaderTest.java
@@ -3,16 +3,31 @@
 import org.cef.CefClient;
 import org.cef.CefSettings;
 import org.cef.browser.CefBrowser;
+import org.cef.browser.CefFrame;
+import org.cef.handler.CefDisplayHandlerAdapter;
 
 import javax.swing.*;
+import java.awt.*;
+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 import java.nio.file.Path;
 import java.nio.file.Paths;
+import java.util.ArrayList;
+import java.util.List;
 import java.util.Locale;
 
 public class JCefLoaderTest {
 
+    private static final JFrame frame = new JFrame("jcef-loader");
+
+    private static final JTabbedPane tabs = new JTabbedPane();
+
+    private static final JTextField urlTextField = new JTextField();
+
+    private static final List<CefBrowser> browsers = new ArrayList<>();
+
     public static void main(String[] args) throws Exception {
         Path jcefPath = Paths.get(System.getProperty("user.home")).resolve("jcef");
         CefSettings settings = new CefSettings();
@@ -22,11 +37,60 @@ public static void main(String[] args) throws Exception {
         settings.locale = Locale.getDefault().toString();
         // Pass options to chromium for example to enable camera/microphone
         CefApp app = JCefLoader.installAndLoad(jcefPath, settings, "--enable-media-stream");
-        CefClient client = app.createClient();
-        CefBrowser browser = client.createBrowser("https://google.com", false, false);
 
-        JFrame frame = new JFrame("jcef-loader");
-        frame.add(browser.getUIComponent());
+        addTab("https://google.com");
+        addTab("https://github.com/BenjaminFaal/jcef-loader");
+
+        JButton createTabButton = new JButton("+");
+        createTabButton.addActionListener(e -> addTab("https://google.com"));
+        frame.add(createTabButton, BorderLayout.LINE_END);
+
+        urlTextField.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                if (e.getButton() == MouseEvent.BUTTON1) {
+                    urlTextField.selectAll();
+                }
+            }
+        });
+        urlTextField.addActionListener(e -> {
+            int selectedIndex = tabs.getSelectedIndex();
+            if (selectedIndex != -1) {
+                CefBrowser browser = browsers.get(selectedIndex);
+                browser.loadURL(urlTextField.getText());
+            } else {
+                addTab(urlTextField.getText());
+            }
+        });
+        frame.add(urlTextField, BorderLayout.NORTH);
+        tabs.addChangeListener(e -> {
+            int selectedIndex = tabs.getSelectedIndex();
+            if (selectedIndex != -1) {
+                CefBrowser browser = browsers.get(selectedIndex);
+                urlTextField.setText(browser.getURL());
+                frame.setTitle(tabs.getTitleAt(selectedIndex) + " - jcef-loader");
+            } else {
+                urlTextField.setText(null);
+                frame.setTitle("jcef-loader");
+            }
+        });
+
+        tabs.addMouseListener(new MouseAdapter() {
+            @Override
+            public void mouseClicked(MouseEvent e) {
+                int index = tabs.indexAtLocation(e.getX(), e.getY());
+                if (index != -1) {
+                    if (e.getButton() == MouseEvent.BUTTON2) {
+                        CefBrowser browser = browsers.get(index);
+                        browser.getClient().dispose();
+                        browsers.remove(browser);
+                        tabs.removeTabAt(index);
+                    }
+                }
+            }
+        });
+        frame.add(tabs, BorderLayout.CENTER);
+
         frame.setSize(800, 800);
         frame.setLocationRelativeTo(null);
         frame.setVisible(true);
@@ -40,4 +104,32 @@ public void windowClosing(WindowEvent e) {
         });
     }
 
+    private static void addTab(String url) {
+        CefClient client = JCefLoader.getInstance().createClient();
+        CefBrowser browser = client.createBrowser(url, false, false);
+        browsers.add(browser);
+        Component component = browser.getUIComponent();
+        tabs.addTab(url, component);
+
+        int index = tabs.indexOfComponent(component);
+        client.addDisplayHandler(new CefDisplayHandlerAdapter() {
+            @Override
+            public void onTitleChange(CefBrowser browser, String title) {
+                if (index != -1) {
+                    tabs.setTitleAt(index, title);
+                    frame.setTitle(title + " - jcef-loader");
+                }
+            }
+
+            @Override
+            public void onAddressChange(CefBrowser browser, CefFrame frame, String url) {
+                int index = tabs.indexOfComponent(component);
+                if (index == tabs.getSelectedIndex()) {
+                    urlTextField.setText(url);
+                }
+            }
+        });
+        tabs.setSelectedComponent(component);
+    }
+
 }