Basic changes to get embedded video working.

Add the ViewManager class to handle child views within a WebView. This class
attaches and removes the views in the UI thread. It also scales the layout
params based on the scale of the WebView.

1 files changed, 129 insertions, 0 deletions

diff --git a/core/java/android/webkit/ViewManager.java b/core/java/android/webkit/ViewManager.java
new file mode 100644
index 0000000..476e85c
--- /dev/null
+++ b/core/java/android/webkit/ViewManager.java
@@ -0,0 +1,129 @@
+/*
+ * Copyright (C) 2009 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.webkit;
+
+import android.content.Context;
+import android.view.View;
+import android.widget.AbsoluteLayout;
+
+import java.util.ArrayList;
+
+class ViewManager {
+    private final WebView mWebView;
+    private final ArrayList<ChildView> mChildren = new ArrayList<ChildView>();
+    private boolean mHidden;
+
+    class ChildView {
+        int x;
+        int y;
+        int width;
+        int height;
+        View mView; // generic view to show
+
+        ChildView() {
+        }
+
+        void setBounds(int x, int y, int width, int height) {
+            this.x = x;
+            this.y = y;
+            this.width = width;
+            this.height = height;
+        }
+
+        void attachView(int x, int y, int width, int height) {
+            if (mView == null) {
+                return;
+            }
+            setBounds(x, y, width, height);
+            final AbsoluteLayout.LayoutParams lp =
+                    new AbsoluteLayout.LayoutParams(ctv(width), ctv(height),
+                            ctv(x), ctv(y));
+            mWebView.mPrivateHandler.post(new Runnable() {
+                public void run() {
+                    // This method may be called multiple times. If the view is
+                    // already attached, just set the new LayoutParams,
+                    // otherwise attach the view and add it to the list of
+                    // children.
+                    if (mView.getParent() != null) {
+                        mView.setLayoutParams(lp);
+                    } else {
+                        mWebView.addView(mView, lp);
+                        mChildren.add(ChildView.this);
+                    }
+                }
+            });
+        }
+
+        void removeView() {
+            if (mView == null) {
+                return;
+            }
+            mWebView.mPrivateHandler.post(new Runnable() {
+                public void run() {
+                    mWebView.removeView(mView);
+                    mChildren.remove(ChildView.this);
+                }
+            });
+        }
+    }
+
+    ViewManager(WebView w) {
+        mWebView = w;
+    }
+
+    ChildView createView() {
+        return new ChildView();
+    }
+
+    // contentToView shorthand.
+    private int ctv(int val) {
+        return mWebView.contentToView(val);
+    }
+
+    void scaleAll() {
+        for (ChildView v : mChildren) {
+            View view = v.mView;
+            AbsoluteLayout.LayoutParams lp =
+                    (AbsoluteLayout.LayoutParams) view.getLayoutParams();
+            lp.width = ctv(v.width);
+            lp.height = ctv(v.height);
+            lp.x = ctv(v.x);
+            lp.y = ctv(v.y);
+            view.setLayoutParams(lp);
+        }
+    }
+
+    void hideAll() {
+        if (mHidden) {
+            return;
+        }
+        for (ChildView v : mChildren) {
+            v.mView.setVisibility(View.GONE);
+        }
+        mHidden = true;
+    }
+
+    void showAll() {
+        if (!mHidden) {
+            return;
+        }
+        for (ChildView v : mChildren) {
+            v.mView.setVisibility(View.VISIBLE);
+        }
+        mHidden = false;
+    }
+}