Introduce OverlayWidget & Use it by PaymentHandler

app/src/common/chromium/com/igalia/wolvic/browser/api/impl/SessionImpl.java

@@ -25,6 +25,7 @@
 import org.chromium.wolvic.DownloadManagerBridge;
 import org.chromium.wolvic.PasswordForm;
 import org.chromium.wolvic.PermissionManagerBridge;
+import org.chromium.wolvic.TabCompositorView;
 import org.chromium.wolvic.UserDialogManagerBridge;
 
 import java.io.InputStream;
@@ -114,8 +115,8 @@ public void setActive(boolean active) {
         if (mTab == null)
             return;
 
-        assert mTab.getContentView() != null;
-        WebContents webContents = mTab.getContentView().getWebContents();
+        assert mTab.getActiveWebContents() != null;
+        WebContents webContents = mTab.getActiveWebContents();
         if (active) {
             webContents.onShow();
         } else {
@@ -129,8 +130,8 @@ public void setActive(boolean active) {
     public void setFocused(boolean focused) {
         if (mTab == null)
             return;
-        assert mTab.getContentView() != null;
-        mTab.getContentView().getWebContents().setFocus(focused);
+        assert mTab.getActiveWebContents() != null;
+        mTab.getActiveWebContents().setFocus(focused);
     }
 
     @Override
@@ -215,6 +216,20 @@ public void releaseDisplay(@NonNull WDisplay display) {
         getTextInput().setView(null);
     }
 
+    public WDisplay acquireOverlayDisplay(TabCompositorView compositorView) {
+        SettingsStore settings = SettingsStore.getInstance(mRuntime.getContext());
+        WDisplay display = new DisplayImpl(this, compositorView);
+        mRuntime.getContainerView().addView(compositorView,
+                new ViewGroup.LayoutParams(settings.getWindowWidth() / 2, settings.getWindowHeight() / 2));
+        getTextInput().setView(getContentView());
+        return display;
+    }
+
+    public void releaseOverlayDisplay(TabCompositorView compositorView) {
+        mRuntime.getContainerView().removeView(compositorView);
+        getTextInput().setView(null);
+    }
+
     @Override
     public void restoreState(@NonNull WSessionState state) {
 
@@ -457,7 +472,7 @@ public TabImpl getTab() {
     }
 
     public ViewGroup getContentView() {
-        return mTab != null ? mTab.getContentView() : null;
+        return mTab != null ? mTab.getActiveContentView() : null;
     }
 
     // The onReadyCallback() mechanism is really limited because it heavily depends on renderers

app/src/common/chromium/com/igalia/wolvic/browser/api/impl/TabImpl.java

@@ -4,18 +4,25 @@
 
 import androidx.annotation.NonNull;
 
+import org.chromium.components.embedder_support.view.ContentView;
 import org.chromium.content_public.browser.MediaSessionObserver;
 import org.chromium.content_public.browser.SelectionPopupController;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.wolvic.Tab;
+import org.chromium.wolvic.TabCompositorView;
 
 /**
- * Controlls a single tab content in a browser for chromium backend.
+ * Controls a single tab content in a browser for chromium backend.
  */
 public class TabImpl extends Tab {
     private TabMediaSessionObserver mTabMediaSessionObserver;
     private TabWebContentsDelegate mTabWebContentsDelegate;
     private TabWebContentsObserver mWebContentsObserver;
+    private WebContents mPaymentHandlerWebContents;
+    // TODO: Need to Payment's mediator
+    private ContentView mPaymentHandlerContentView;
+    private TabCompositorView mPaymentHandlerCompositorView;
+
 
     public TabImpl(@NonNull Context context, @NonNull SessionImpl session, WebContents webContents) {
         super(context, session.getSettings().getUsePrivateMode(), webContents);
@@ -27,7 +34,7 @@ private void registerCallbacks(@NonNull SessionImpl session) {
         mTabWebContentsDelegate = new TabWebContentsDelegate(session, mWebContents);
         setWebContentsDelegate(mWebContents, mTabWebContentsDelegate);
 
-        mWebContentsObserver = new TabWebContentsObserver(mWebContents, session);
+        mWebContentsObserver = new TabWebContentsObserver(this, session);
 
         SelectionPopupController controller =
                 SelectionPopupController.fromWebContents(mWebContents);
@@ -47,4 +54,22 @@ public void onMediaFullscreen(boolean isFullscreen) {
     public void purgeHistory() {
         mWebContents.getNavigationController().clearHistory();
     }
+
+    public void setPaymentWebContents(WebContents webContents, ContentView contentView, TabCompositorView compositorView) {
+        mPaymentHandlerWebContents = webContents;
+        mPaymentHandlerContentView = contentView;
+        mPaymentHandlerCompositorView = compositorView;
+    }
+
+    public WebContents getActiveWebContents() {
+        return mPaymentHandlerWebContents != null ? mPaymentHandlerWebContents : mWebContents;
+    }
+
+    public ContentView getActiveContentView() {
+       return mPaymentHandlerContentView != null ? mPaymentHandlerContentView : getContentView();
+    }
+
+    public TabCompositorView getActiveCompositorView() {
+       return mPaymentHandlerCompositorView != null ? mPaymentHandlerCompositorView : getCompositorView();
+    }
 }

app/src/common/chromium/com/igalia/wolvic/browser/api/impl/TabWebContentsObserver.java

@@ -1,24 +1,39 @@
 package com.igalia.wolvic.browser.api.impl;
 
+import android.content.Context;
+
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
 
+import com.igalia.wolvic.browser.api.WDisplay;
 import com.igalia.wolvic.browser.api.WSession;
 import com.igalia.wolvic.browser.api.WWebRequestError;
 
+import org.chromium.base.ContextUtils;
+import org.chromium.components.embedder_support.view.ContentView;
 import org.chromium.content_public.browser.LifecycleState;
+import org.chromium.content_public.browser.LoadUrlParams;
 import org.chromium.content_public.browser.NavigationHandle;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.content_public.browser.WebContentsObserver;
+import org.chromium.ui.base.ActivityWindowAndroid;
+import org.chromium.ui.base.IntentRequestTracker;
+import org.chromium.ui.base.ViewAndroidDelegate;
+import org.chromium.ui.base.WindowAndroid;
 import org.chromium.url.GURL;
+import org.chromium.wolvic.TabCompositorView;
+import org.chromium.wolvic.WolvicWebContentsFactory;
 
 import java.security.cert.X509Certificate;
 
 public class TabWebContentsObserver extends WebContentsObserver {
     private @NonNull SessionImpl mSession;
+    private @NonNull TabImpl mTab;
+    private WebContentsObserver mPaymentWebContentsObserver;
 
-    public TabWebContentsObserver(WebContents webContents, @NonNull SessionImpl session) {
-        super(webContents);
+    public TabWebContentsObserver(TabImpl tab, @NonNull SessionImpl session) {
+        super(tab.getActiveWebContents());
+        mTab = tab;
         mSession = session;
     }
 
@@ -106,6 +121,51 @@ public void didStopLoading(GURL url, boolean isKnownValid) {
         dispatchCanGoBackOrForward();
     }
 
+    @Override
+    public void onCreateNewPaymentHandler(final WebContents newWebContents) {
+        WSession.ContentDelegate contentDelegate = mSession.getContentDelegate();
+        if (contentDelegate == null) {
+            return;
+        }
+
+        assert newWebContents.getViewAndroidDelegate() != null
+             : "WebContents should be initialized.";
+        WindowAndroid windowAndroid = newWebContents.getTopLevelNativeWindow();
+        Context context = mWebContents.get().getTopLevelNativeWindow().getContext().get();
+        final TabCompositorView compositorView = new TabCompositorView(context);
+        compositorView.onNativeLibraryLoaded(windowAndroid);
+        windowAndroid.setAnimationPlaceholderView(compositorView);
+
+        ViewAndroidDelegate viewDelegate = newWebContents.getViewAndroidDelegate();
+        assert viewDelegate.getContainerView() instanceof ContentView
+                : "WebContents should not set container views other than ContentView.";
+
+        mTab.setPaymentWebContents(newWebContents, (ContentView) viewDelegate.getContainerView(), compositorView);
+
+        WDisplay display = mSession.acquireOverlayDisplay(compositorView);
+        contentDelegate.onShowPaymentHandler(mSession, display, () -> {
+            if (newWebContents.isDestroyed()) {
+                return;
+            }
+            mTab.setPaymentWebContents(null, null, null);
+            newWebContents.destroy();
+        });
+
+        // Show Compositor View after attaching to the parent view.
+        compositorView.setCurrentWebContents(newWebContents);
+
+        mPaymentWebContentsObserver = new WebContentsObserver(newWebContents) {
+            @Override
+            public void destroy() {
+                mSession.releaseOverlayDisplay(compositorView);
+                mTab.setPaymentWebContents(null, null, null);
+
+                contentDelegate.onHidePaymentHandler(mSession);
+                newWebContents.removeObserver(this);
+            }
+        };
+    }
+
     @Override
     public void didFailLoad(boolean isInPrimaryMainFrame, int errorCode, GURL failingUrl, @LifecycleState int rfhLifecycleState) {
         @Nullable WSession.ProgressDelegate delegate = mSession.getProgressDelegate();

app/src/common/chromium/com/igalia/wolvic/browser/api/impl/TextInputImpl.java

@@ -19,6 +19,7 @@
 
 import org.chromium.content_public.browser.ImeAdapter;
 import org.chromium.content_public.browser.InputMethodManagerWrapper;
+import org.chromium.content_public.browser.WebContents;
 import org.chromium.ui.base.WindowAndroid;
 
 public class TextInputImpl implements WTextInput {
@@ -180,6 +181,7 @@ public WSession.TextInputDelegate getDelegate() {
     }
 
     private ImeAdapter getImeAdapter() {
-        return mSession.getTab() != null ? mSession.getTab().getImeAdapter() : null;
+        WebContents webContents = mSession.getTab() != null ? mSession.getTab().getActiveWebContents() : null;
+        return webContents != null ? ImeAdapter.fromWebContents(webContents) : null;
     }
 }

app/src/common/shared/com/igalia/wolvic/VRBrowserActivity.java

@@ -71,6 +71,7 @@
 import com.igalia.wolvic.ui.widgets.AppServicesProvider;
 import com.igalia.wolvic.ui.widgets.KeyboardWidget;
 import com.igalia.wolvic.ui.widgets.NavigationBarWidget;
+import com.igalia.wolvic.ui.widgets.OverlayContentWidget;
 import com.igalia.wolvic.ui.widgets.RootWidget;
 import com.igalia.wolvic.ui.widgets.TrayWidget;
 import com.igalia.wolvic.ui.widgets.UISurfaceTextureRenderer;
@@ -1107,6 +1108,8 @@ void handleMotionEvent(final int aHandle, final int aDevice, final boolean aFocu
                 if (!windowWidget.isLibraryVisible()) {
                     scale = 1.0f;
                 }
+            } else if (widget instanceof OverlayContentWidget) {
+                scale = 1.0f;
             }
             final float x = aX / scale;
             final float y = aY / scale;

app/src/common/shared/com/igalia/wolvic/browser/api/WSession.java

@@ -317,6 +317,29 @@ WResult<WSlowScriptResponse> onSlowScript(
          */
         @UiThread
         default void onShowDynamicToolbar(@NonNull final WSession aSession) {}
+
+        public interface OnPaymentHandlerCallback {
+            void onDismiss();
+        }
+
+        /**
+         * The view should display its payment handler, overlayed on the active tab.
+         *
+         * @param aSession ISession that initiated the callback.
+         * @param aDisplay IDisplay that initiated the callback.
+         * @param callback Callback interface.
+         */
+        @UiThread
+        default void onShowPaymentHandler(@NonNull final WSession aSession,
+                @NonNull final WDisplay aDisplay,
+                @NonNull final OnPaymentHandlerCallback callback) {}
+        /**
+         * The view should hide its payment handler.
+         *
+         * @param aSession ISession that initiated the callback.
+         */
+        @UiThread
+        default void onHidePaymentHandler(@NonNull final WSession aSession) {}
     }
 
     interface NavigationDelegate {

app/src/common/shared/com/igalia/wolvic/browser/engine/Session.java

@@ -1422,6 +1422,20 @@ public void onExternalResponse(@NonNull WSession aSession, @NonNull WWebResponse
         }
     }
 
+    @Override
+    public void onShowPaymentHandler(@NonNull final WSession aSession, @NonNull WDisplay aDisplay, @NonNull OnPaymentHandlerCallback callback) {
+        for (WSession.ContentDelegate listener : mContentListeners) {
+            listener.onShowPaymentHandler(aSession, aDisplay, callback);
+        }
+    }
+
+    @Override
+    public void onHidePaymentHandler(@NonNull final WSession aSession) {
+        for (WSession.ContentDelegate listener : mContentListeners) {
+            listener.onHidePaymentHandler(aSession);
+        }
+    }
+
     // TextInput Delegate
 
     @Override