Add rendering support to the TestShell.

chrome/android/java/src/org/chromium/chrome/browser/TabBase.java

Index: chrome/android/java/src/org/chromium/chrome/browser/TabBase.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/TabBase.java b/chrome/android/java/src/org/chromium/chrome/browser/TabBase.java
new file mode 100644
index 0000000000000000000000000000000000000000..7a124fbf2cf900a782b03db29a863bb4b04daa9f
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/TabBase.java
@@ -0,0 +1,139 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser;
+
+import android.content.Context;
+import android.text.TextUtils;
+
+import org.chromium.chrome.browser.ChromeWebContentsDelegateAndroid;
+import org.chromium.chrome.browser.ContentViewUtil;
+import org.chromium.content.browser.ContentView;
+import org.chromium.content.browser.ContentViewCore;
+import org.chromium.content.browser.LoadUrlParams;
+import org.chromium.content.common.CleanupReference;
+import org.chromium.ui.gfx.NativeWindow;
+
+/**
+ * The basic Java representation of a tab.  Contains and manages a {@link ContentView}.
+ */
+public class TabBase {
+    private NativeWindow mWindow;
+    private ContentView mContentView;
+    private ChromeWebContentsDelegateAndroid mWebContentsDelegate;
+    private int mNativeTabBaseAndroidImpl;
+
+    private CleanupReference mCleanupReference;
+
+    /**
+     * @param context  The Context the view is running in.
+     * @param url      The URL to start this tab with.
+     * @param window   The NativeWindow should represent this tab.
+     * @param delegate The {@link ChromeWebContentsDelegateAndroid} that should be notified of any
+     *                 WebContents changes.
+     */
+    public TabBase(Context context, String url, NativeWindow window,
+            ChromeWebContentsDelegateAndroid delegate) {
+        this(context, 0, window, delegate);
+        loadUrlWithSanitization(url);
+    }
+
+    /**
+     * @param context           The Context the view is running in.
+     * @param nativeWebContents A native pointer to the WebContents this tab represents.
+     * @param window            The NativeWindow should represent this tab.
+     * @param delegate          The {@link ChromeWebContentsDelegateAndroid} that should be notified
+     *                          of any WebContents changes.
+     */
+    public TabBase(Context context, int nativeWebContentsPtr,
+            NativeWindow window, ChromeWebContentsDelegateAndroid delegate) {
+        mWindow = window;
+
+        // Build the WebContents and the ContentView/ContentViewCore
+        if (nativeWebContentsPtr == 0) {
+            nativeWebContentsPtr = ContentViewUtil.createNativeWebContents(false);
+        }
+        mContentView = ContentView.newInstance(context, nativeWebContentsPtr, mWindow,
+                ContentView.PERSONALITY_CHROME);
+        mNativeTabBaseAndroidImpl = nativeInit(nativeWebContentsPtr);
+
+        // Build the WebContentsDelegate
+        mWebContentsDelegate = delegate == null ? new ChromeWebContentsDelegateAndroid() : delegate;
+        nativeInitWebContentsDelegate(mNativeTabBaseAndroidImpl, mWebContentsDelegate);
+
+        // To be called after everything is initialized.
+        mCleanupReference = new CleanupReference(this,
+                new DestroyRunnable(mNativeTabBaseAndroidImpl));
+    }
+
+    /**
+     * Should be called when the tab is no longer needed.  Once this is called this tab should not
+     * be used.
+     */
+    public void destroy() {
+        destroyContentView();
+        if (mNativeTabBaseAndroidImpl != 0) {
+            mCleanupReference.cleanupNow();
+            mNativeTabBaseAndroidImpl = 0;
+        }
+    }
+
+    /**
+     * @return The {@link ContentView} represented by this tab.
+     */
+    public ContentView getContentView() {
+        return mContentView;
+    }
+
+    /**
+     * @return A pointer to the native component of this tab.
+     */
+    public int getNativeTab() {
+        return mNativeTabBaseAndroidImpl;
+    }
+
+    private void destroyContentView() {
+        if (mContentView == null) return;
+
+        mContentView.destroy();
+        mContentView = null;
+    }
+
+    /**
+     * Navigates this Tab's {@link ContentView} to a sanitized version of {@code url}.
+     * @param url The potentially unsanitized URL to navigate to.
+     */
+    public void loadUrlWithSanitization(String url) {
+        if (url == null) return;
+
+        // Sanitize the URL.
+        url = nativeFixupUrl(mNativeTabBaseAndroidImpl, url);
+
+        // Invalid URLs will just return empty.
+        if (TextUtils.isEmpty(url)) return;
+
+        if (TextUtils.equals(url, mContentView.getUrl())) {
+            mContentView.reload();
+        } else {
+            mContentView.loadUrl(new LoadUrlParams(url));
+        }
+    }
+
+    private static final class DestroyRunnable implements Runnable {
+        private final int mNativeTabBaseAndroidImpl;
+        private DestroyRunnable(int nativeTabBaseAndroidImpl) {
+            mNativeTabBaseAndroidImpl = nativeTabBaseAndroidImpl;
+        }
+        @Override
+        public void run() {
+            nativeDestroy(mNativeTabBaseAndroidImpl);
+        }
+    }
+
+    private native int nativeInit(int webContentsPtr);
+    private static native void nativeDestroy(int nativeTabBaseAndroidImpl);
+    private native void nativeInitWebContentsDelegate(int nativeTabBaseAndroidImpl,
+            ChromeWebContentsDelegateAndroid chromeWebContentsDelegateAndroid);
+    private native String nativeFixupUrl(int nativeTabBaseAndroidImpl, String url);
+}