Bug 1377580 - [2.1] Add support for external URI loading in GeckoView. r=snorp

mobile/android/geckoview/src/main/java/org/mozilla/gecko/GeckoView.java

@@ -128,7 +128,10 @@ public class GeckoView extends LayerView {
     private final GeckoViewHandler<NavigationListener> mNavigationHandler =
         new GeckoViewHandler<NavigationListener>(
             "GeckoViewNavigation", this,
-            new String[]{ "GeckoView:LocationChange" }
+            new String[]{
+                "GeckoView:LocationChange",
+                "GeckoView:OnLoadUri"
+            }
         ) {
             @Override
             public void handleMessage(final NavigationListener listener,
@@ -142,8 +145,13 @@ public class GeckoView extends LayerView {
                                          message.getBoolean("canGoBack"));
                     listener.onCanGoForward(GeckoView.this,
                                             message.getBoolean("canGoForward"));
+                } else if ("GeckoView:OnLoadUri".equals(event)) {
+                    final String uri = message.getString("uri");
+                    final NavigationListener.TargetWindow where =
+                        NavigationListener.TargetWindow.get(
+                            message.getInt("where"));
+                    listener.onLoadUri(GeckoView.this, uri, where);
                 }
-
             }
         };
 
@@ -1379,6 +1387,44 @@ public class GeckoView extends LayerView {
         * @param canGoForward The new value for the ability.
         */
         void onCanGoForward(GeckoView view, boolean canGoForward);
+
+        enum TargetWindow {
+            DEFAULT(0),
+            CURRENT(1),
+            NEW(2),
+            NEWTAB(3),
+            SWITCHTAB(4);
+
+            private static final TargetWindow[] sValues = TargetWindow.values();
+            private int mValue;
+
+            private TargetWindow(int value) {
+                mValue = value;
+            }
+
+            public static TargetWindow get(int value) {
+                return sValues[value];
+            }
+        }
+
+        enum LoadUriResult {
+            HANDLED(0),
+            LOAD_IN_FRAME(1);
+
+            private int mValue;
+
+            private LoadUriResult(int value) {
+                mValue = value;
+            }
+        }
+
+        /**
+        * A request to open an URI.
+        * @param view The GeckoView that initiated the callback.
+        * @param uri The URI to be loaded.
+        * @param where The target window.
+        */
+        void onLoadUri(GeckoView view, String uri, TargetWindow where);
     }
 
     /**

mobile/android/modules/geckoview/GeckoViewNavigation.jsm

@@ -70,11 +70,61 @@ class GeckoViewNavigation extends GeckoViewModule {
     debug("receiveMessage " + aMsg.name);
   }
 
+  // nsIBrowserDOMWindow::createContentWindow implementation.
+  createContentWindow(aUri, aOpener, aWhere, aFlags, aTriggeringPrincipal) {
+    debug("createContentWindow: aUri=" + (aUri && aUri.spec) +
+          " aWhere=" + aWhere +
+          " aFlags=" + aFlags);
+
+    if (!aUri) {
+      throw Cr.NS_ERROR_ABORT;
+    }
+
+    if (aWhere === Ci.nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW ||
+        aWhere === Ci.nsIBrowserDOMWindow.OPEN_CURRENTWINDOW) {
+      return this.browser.contentWindow;
+    }
+
+    let message = {
+      type: "GeckoView:OnLoadUri",
+      uri: aUri.spec,
+      where: aWhere,
+      flags: aFlags
+    };
+
+    debug("dispatch " + JSON.stringify(message));
+
+    this.eventDispatcher.sendRequest(message);
+
+    throw Cr.NS_ERROR_ABORT;
+  }
+
   // nsIBrowserDOMWindow::openURI implementation.
-  openURI(aUri, aOpener, aWhere, aFlags) {
-    debug("openURI: aUri.spec=" + aUri.spec);
-    // nsIWebNavigation::loadURI(URI, loadFlags, referrer, postData, headers).
-    this.browser.loadURI(aUri.spec, null, null, null);
+  openURI(aUri, aOpener, aWhere, aFlags, aTriggeringPrincipal) {
+    return this.createContentWindow(aUri, aOpener, aWhere, aFlags,
+                                    aTriggeringPrincipal);
+  }
+
+  // nsIBrowserDOMWindow::openURIInFrame implementation.
+  openURIInFrame(aUri, aParams, aWhere, aFlags, aNextTabParentId, aName) {
+    debug("openURIInFrame: aUri=" + (aUri && aUri.spec) +
+          " aParams=" + aParams +
+          " aWhere=" + aWhere +
+          " aFlags=" + aFlags +
+          " aNextTabParentId=" + aNextTabParentId +
+          " aName=" + aName);
+
+    if (aWhere === Ci.nsIBrowserDOMWindow.OPEN_DEFAULTWINDOW ||
+        aWhere === Ci.nsIBrowserDOMWindow.OPEN_CURRENTWINDOW) {
+      return this.browser.QueryInterface(Ci.nsIFrameLoaderOwner);
+    }
+
+    throw Cr.NS_ERROR_ABORT;
+  }
+
+  isTabContentWindow(aWindow) {
+    debug("isTabContentWindow " + this.browser.contentWindow === aWindow);
+    return this.browser.contentWindow === aWindow;
   }
 
   // nsIBrowserDOMWindow::canClose implementation.