Chromecast: initial checkin of Android-based cast shell.

chromecast/shell/android/apk/src/org/chromium/chromecast/shell/CastWindowAndroid.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.content.Intent;
+import android.net.Uri;
+import android.support.v4.content.LocalBroadcastManager;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.util.Log;
+import android.view.ViewGroup;
+import android.widget.FrameLayout;
+import android.widget.LinearLayout;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+import org.chromium.content.browser.ContentView;
+import org.chromium.content.browser.ContentViewCore;
+import org.chromium.content.browser.ContentViewRenderView;
+import org.chromium.content.browser.WebContentsObserverAndroid;
+import org.chromium.content_public.browser.LoadUrlParams;
+import org.chromium.ui.base.WindowAndroid;
+
+/**
+ * Container for the various UI components that make up a shell window.
+ */
+@JNINamespace("chromecast::shell")
+public class CastWindowAndroid extends LinearLayout {
+    public static final String TAG = "CastWindowAndroid";
+
+    public static final String ACTION_PAGE_LOADED = "castPageLoaded";
+    public static final String ACTION_ENABLE_DEV_TOOLS = "castEnableDevTools";
+    public static final String ACTION_DISABLE_DEV_TOOLS = "castDisableDevTools";
+
+    private ContentViewCore mContentViewCore;
+    private ContentViewRenderView mContentViewRenderView;
+    private WebContentsObserverAndroid mWebContentsObserver;
+    private WindowAndroid mWindow;
+
+    /**
+     * Constructor for inflating via XML.
+     */
+    public CastWindowAndroid(Context context, AttributeSet attrs) {
+        super(context, attrs);
+    }
+
+    /**
+     * Set the SurfaceView being renderered to as soon as it is available.
+     */
+    public void setContentViewRenderView(ContentViewRenderView contentViewRenderView) {
+        FrameLayout contentViewHolder = (FrameLayout) findViewById(R.id.contentview_holder);
+        if (contentViewRenderView == null) {
+            if (mContentViewRenderView != null) {
+                contentViewHolder.removeView(mContentViewRenderView);
+            }
+        } else {
+            contentViewHolder.addView(contentViewRenderView,
+                    new FrameLayout.LayoutParams(
+                            FrameLayout.LayoutParams.MATCH_PARENT,
+                            FrameLayout.LayoutParams.MATCH_PARENT));
+        }
+        mContentViewRenderView = contentViewRenderView;
+    }
+
+    /**
+     * @param window The owning window for this shell.
+     */
+    public void setWindow(WindowAndroid window) {
+        mWindow = window;
+    }
+
+    /**
+     * Loads an URL.  This will perform minimal amounts of sanitizing of the URL to attempt to
+     * make it valid.
+     *
+     * @param url The URL to be loaded by the shell.
+     */
+    public void loadUrl(String url) {
+        if (url == null) return;
+
+        if (TextUtils.equals(url, mContentViewCore.getUrl())) {
+            mContentViewCore.reload(true);
+        } else {
+            mContentViewCore.loadUrl(new LoadUrlParams(normalizeUrl(url)));
+        }
+
+        // TODO(aurimas): Remove this when crbug.com/174541 is fixed.
+        mContentViewCore.getContainerView().clearFocus();
+        mContentViewCore.getContainerView().requestFocus();
+    }
+
+    /**
+     * Given a URI String, performs minimal normalization to attempt to build a usable URL from it.
+     * @param uriString The passed-in path to be normalized.
+     * @return The normalized URL, as a string.
+     */
+    private static String normalizeUrl(String uriString) {
+        if (uriString == null) return uriString;
+        Uri uri = Uri.parse(uriString);
+        if (uri.getScheme() == null) {
+            uri = Uri.parse("http://" + uriString);
+        }
+        return uri.toString();
+    }
+
+    /**
+     * Initializes the ContentView based on the native tab contents pointer passed in.
+     * @param nativeWebContents The pointer to the native tab contents object.
+     */
+    @SuppressWarnings("unused")
+    @CalledByNative
+    private void initFromNativeWebContents(long nativeWebContents) {
+        Context context = getContext();
+        mContentViewCore = new ContentViewCore(context);
+        ContentView view = ContentView.newInstance(context, mContentViewCore);
+        mContentViewCore.initialize(view, view, nativeWebContents, mWindow);
+
+        if (getParent() != null) mContentViewCore.onShow();
+        ((FrameLayout) findViewById(R.id.contentview_holder)).addView(view,
+                new FrameLayout.LayoutParams(
+                        FrameLayout.LayoutParams.MATCH_PARENT,
+                        FrameLayout.LayoutParams.MATCH_PARENT));
+        view.requestFocus();
+        mContentViewRenderView.setCurrentContentViewCore(mContentViewCore);
+
+        mWebContentsObserver = new WebContentsObserverAndroid(mContentViewCore.getWebContents()) {
+            @Override
+            public void didStopLoading(String url) {
+                Uri intentUri = Uri.parse(mContentViewCore
+                        .getOriginalUrlForActiveNavigationEntry());
+                Log.v(TAG, "Broadcast ACTION_PAGE_LOADED: scheme=" + intentUri.getScheme()
+                        + ", host=" + intentUri.getHost());
+                LocalBroadcastManager.getInstance(getContext()).sendBroadcast(
+                        new Intent(ACTION_PAGE_LOADED, intentUri));
+            }
+        };
+    }
+
+    /**
+     * @return The {@link ViewGroup} currently shown by this Shell.
+     */
+    public ViewGroup getContentView() {
+        return mContentViewCore.getContainerView();
+    }
+
+    /**
+     * @return The {@link ContentViewCore} currently managing the view shown by this Shell.
+     */
+    public ContentViewCore getContentViewCore() {
+        return mContentViewCore;
+    }
+}