Chromecast: initial checkin of Android-based cast shell.

chromecast/shell/android/apk/src/org/chromium/chromecast/shell/CastWindowManager.java

+// Copyright 2014 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.chromecast.shell;
+
+import android.content.Context;
+import android.graphics.Color;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.widget.FrameLayout;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+import org.chromium.content.browser.ContentViewCore;
+import org.chromium.content.browser.ContentViewRenderView;
+import org.chromium.ui.base.WindowAndroid;
+
+/**
+ * Container and generator of CastWindow instances.
+ */
+@JNINamespace("chromecast::shell")
+public class CastWindowManager extends FrameLayout {
+    private static final String TAG = "CastWindowManager";
+
+    private WindowAndroid mWindow;
+    private CastWindowAndroid mActiveCastWindow;
+
+    // The target for all content rendering.
+    private ContentViewRenderView mContentViewRenderView;
+
+    /**
+     * Delegate to deliver events from the native window.
+     */
+    public interface Delegate {
+        public void onCreated();
+        public void onClosed();
+    }
+    private Delegate mDelegate;
+
+    /**
+     * Constructor for inflating via XML.
+     */
+    public CastWindowManager(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        nativeInit(this);
+    }
+
+    /**
+     * @param delegate Delegate to handle events.
+     */
+    public void setDelegate(Delegate delegate) {
+        mDelegate = delegate;
+    }
+
+    /**
+     * @param window Represents the activity window.
+     */
+    public void setWindow(WindowAndroid window) {
+        assert window != null;
+        mWindow = window;
+        mContentViewRenderView = new ContentViewRenderView(getContext()) {
+            @Override
+            protected void onReadyToRender() {
+                setOverlayVideoMode(true);
+            }
+        };
+        mContentViewRenderView.onNativeLibraryLoaded(window);
+        // Setting the background color to black avoids rendering a white splash screen
+        // before the players are loaded. See crbug/307113 for details.
+        mContentViewRenderView.setSurfaceViewBackgroundColor(Color.BLACK);
+    }
+
+    /**
+     * @return The window used to generate all shells.
+     */
+    public WindowAndroid getWindow() {
+        return mWindow;
+    }
+
+    /**
+     * @return The currently visible shell view or null if one is not showing.
+     */
+    public CastWindowAndroid getActiveCastWindow() {
+        return mActiveCastWindow;
+    }
+
+    /**
+     * Creates a new shell pointing to the specified URL.
+     * @param url The URL the shell should load upon creation.
+     * @return Pointer of native cast shell instance.
+     */
+    public long launchCastWindow(String url) {
+        return nativeLaunchCastWindow(url);
+    }
+
+    /**
+     * Stops a native cast shell instance created by {@link #launchCastWindow(String)}.
+     * @param nativeCastWindow Pointer of native cast shell instance returned
+     *        by {@link #launchCastWindow(String)}.
+     * @see #launchCastWindow(String)
+     */
+    public void stopCastWindow(long nativeCastWindow) {
+        nativeStopCastWindow(nativeCastWindow);
+    }
+
+    @SuppressWarnings("unused")
+    @CalledByNative
+    private Object createCastWindow() {
+        assert mContentViewRenderView != null;
+        LayoutInflater inflater =
+                (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
+        CastWindowAndroid shellView =
+                (CastWindowAndroid) inflater.inflate(R.layout.cast_window_view, null);
+        shellView.setWindow(mWindow);
+
+        if (mActiveCastWindow != null) closeCastWindow(mActiveCastWindow);
+
+        shellView.setContentViewRenderView(mContentViewRenderView);
+        addView(shellView, new FrameLayout.LayoutParams(
+                FrameLayout.LayoutParams.MATCH_PARENT, FrameLayout.LayoutParams.MATCH_PARENT));
+        mActiveCastWindow = shellView;
+        ContentViewCore contentViewCore = mActiveCastWindow.getContentViewCore();
+        if (contentViewCore != null) {
+            mContentViewRenderView.setCurrentContentViewCore(contentViewCore);
+            contentViewCore.onShow();
+        }
+
+        if (mDelegate != null) {
+            mDelegate.onCreated();
+        }
+
+        return shellView;
+    }
+
+    @SuppressWarnings("unused")
+    @CalledByNative
+    private void closeCastWindow(CastWindowAndroid shellView) {
+        if (shellView == mActiveCastWindow) mActiveCastWindow = null;
+        ContentViewCore contentViewCore = shellView.getContentViewCore();
+        if (contentViewCore != null) contentViewCore.onHide();
+        shellView.setContentViewRenderView(null);
+        shellView.setWindow(null);
+        removeView(shellView);
+
+        if (mDelegate != null) {
+            mDelegate.onClosed();
+        }
+    }
+
+    private static native void nativeInit(Object shellManagerInstance);
+    private static native long nativeLaunchCastWindow(String url);
+    private static native void nativeStopCastWindow(long pointerOfNativeCastWindow);
+    public static native void nativeEnableDevTools(boolean enable);
+}