Add rendering support to the TestShell.

chrome/android/testshell/java/src/org/chromium/chrome/testshell/TabManager.java

Index: chrome/android/testshell/java/src/org/chromium/chrome/testshell/TabManager.java
diff --git a/chrome/android/testshell/java/src/org/chromium/chrome/testshell/TabManager.java b/chrome/android/testshell/java/src/org/chromium/chrome/testshell/TabManager.java
new file mode 100644
index 0000000000000000000000000000000000000000..6164303bf9ae1c483bbe2545bba1451039a12cbc
--- /dev/null
+++ b/chrome/android/testshell/java/src/org/chromium/chrome/testshell/TabManager.java
@@ -0,0 +1,137 @@
+// 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.testshell;
+
+import android.util.AttributeSet;
+import android.view.Surface;
+import android.view.SurfaceHolder;
+import android.view.SurfaceView;
+import android.view.ViewGroup;
+import android.content.Context;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+
+import org.chromium.base.JNINamespace;
+
+import org.chromium.chrome.browser.ChromeWebContentsDelegateAndroid;
+import org.chromium.chrome.browser.TabBase;
+import org.chromium.ui.gfx.NativeWindow;
+
+/**
+ * The TabManager hooks together all of the related {@link View}s that are used to represent
+ * a {@link TabBase}.  It properly builds a {@link TabBase} and makes sure that the {@link Toolbar}
+ * and {@link SurfaceView} show the proper content.
+ */
+@JNINamespace("chrome")
+public class TabManager extends LinearLayout {
+    private static final String DEFAULT_URL = "http://www.google.com";
+
+    private NativeWindow mWindow;
+    private ViewGroup mContentViewHolder;
+    private SurfaceView mRenderTarget;
+    private TestShellToolbar mToolbar;
+
+    private TabBase mCurrentTab;
+
+    /**
+     * @param context The Context the view is running in.
+     * @param attrs   The attributes of the XML tag that is inflating the view.
+     */
+    public TabManager(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        nativeInit(this);
+    }
+
+    @Override
+    protected void onFinishInflate() {
+        super.onFinishInflate();
+
+        mContentViewHolder = (ViewGroup) findViewById(R.id.content_container);
+        mToolbar = (TestShellToolbar) findViewById(R.id.toolbar);
+        mRenderTarget = (SurfaceView) findViewById(R.id.render_target);
+        mRenderTarget.getHolder().addCallback(new SurfaceHolder.Callback() {
+            @Override
+            public void surfaceDestroyed(SurfaceHolder holder) {
+                nativeSurfaceDestroyed();
+            }
+
+            @Override
+            public void surfaceCreated(SurfaceHolder holder) {
+                nativeSurfaceCreated(holder.getSurface());
+
+                if (mCurrentTab == null) createTab(DEFAULT_URL);
+            }
+
+            @Override
+            public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
+                nativeSurfaceSetSize(width, height);
+            }
+        });
+    }
+
+    /**
+     * @param window The window used to generate all ContentViews.
+     */
+    public void setWindow(NativeWindow window) {
+        mWindow = window;
+    }
+
+    /**
+     * @return The currently visible {@link TabBase}.
+     */
+    public TabBase getCurrentTab() {
+        return mCurrentTab;
+    }
+
+    /**
+     * Creates a {@link TabBase} with a URL specified by {@code url}.
+     * @param url The URL the new {@link TabBase} should start with.
+     */
+    public void createTab(String url) {
+        if (!isRenderTargetInitialized()) return;
+
+        TabBase tab = new TabBase(getContext(), url, mWindow,
+                new TabManagerWebContentsDelegateAndroid());
+        setCurrentTab(tab);
+    }
+
+    private boolean isRenderTargetInitialized() {
+        return mRenderTarget != null && mRenderTarget.getHolder().getSurface() != null;
+    }
+
+    private void setCurrentTab(TabBase tab) {
+        if (mCurrentTab != null) {
+            mContentViewHolder.removeView(mCurrentTab.getContentView());
+            nativeHideTab(mCurrentTab.getNativeTab());
+            mCurrentTab.destroy();
+        }
+
+        mCurrentTab = tab;
+
+        mToolbar.showTab(mCurrentTab);
+        mContentViewHolder.addView(mCurrentTab.getContentView());
+        mCurrentTab.getContentView().requestFocus();
+        nativeShowTab(mCurrentTab.getNativeTab());
+    }
+
+    private class TabManagerWebContentsDelegateAndroid extends ChromeWebContentsDelegateAndroid {
+        @Override
+        public void onLoadProgressChanged(int progress) {
+            mToolbar.onLoadProgressChanged(progress);
+        }
+
+        @Override
+        public void onUpdateUrl(String url) {
+            mToolbar.onUpdateUrl(url);
+        }
+    }
+
+    private static native void nativeShowTab(int jtab);
+    private static native void nativeHideTab(int jtab);
+    private static native void nativeInit(Object renderTargetInstance);
+    private static native void nativeSurfaceCreated(Surface surface);
+    private static native void nativeSurfaceDestroyed();
+    private static native void nativeSurfaceSetSize(int width, int height);
+}