Implement OverlayPanels as SceneOverlays

chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
index ee07e5639bc11476f462a55b684ae569df667457..d6548123c840745b5ef77cb352b649df11b1c455 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
@@ -14,7 +14,6 @@ import android.view.ViewGroup;
 
 import org.chromium.chrome.browser.ChromeApplication;
 import org.chromium.chrome.browser.UrlConstants;
-import org.chromium.chrome.browser.compositor.bottombar.OverlayPanel;
 import org.chromium.chrome.browser.compositor.bottombar.OverlayPanelContentViewDelegate;
 import org.chromium.chrome.browser.compositor.bottombar.OverlayPanelManager;
 import org.chromium.chrome.browser.compositor.bottombar.contextualsearch.ContextualSearchPanel;
@@ -22,19 +21,13 @@ import org.chromium.chrome.browser.compositor.bottombar.readermode.ReaderModePan
 import org.chromium.chrome.browser.compositor.layouts.components.LayoutTab;
 import org.chromium.chrome.browser.compositor.layouts.components.VirtualView;
 import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.CascadeEventFilter;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.ContextualSearchEventFilter;
 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EdgeSwipeEventFilter;
 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EdgeSwipeEventFilter.ScrollDirection;
 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EdgeSwipeHandler;
 import org.chromium.chrome.browser.compositor.layouts.eventfilter.EmptyEdgeSwipeHandler;
-import org.chromium.chrome.browser.compositor.layouts.eventfilter.EventFilter;
 import org.chromium.chrome.browser.compositor.layouts.eventfilter.GestureHandler;
-import org.chromium.chrome.browser.compositor.layouts.phone.ContextualSearchLayout;
 import org.chromium.chrome.browser.compositor.overlays.SceneOverlay;
 import org.chromium.chrome.browser.contextualsearch.ContextualSearchManagementDelegate;
-import org.chromium.chrome.browser.contextualsearch.ContextualSearchStaticEventFilter;
-import org.chromium.chrome.browser.contextualsearch.ContextualSearchStaticEventFilter.ContextualSearchTapHandler;
 import org.chromium.chrome.browser.device.DeviceClassManager;
 import org.chromium.chrome.browser.dom_distiller.ReaderModeManagerDelegate;
 import org.chromium.chrome.browser.fullscreen.FullscreenManager;
@@ -57,22 +50,18 @@ import java.util.List;
  * driving all {@link Layout}s that get shown via the {@link LayoutManager}.
  */
 public class LayoutManagerDocument extends LayoutManager
-        implements ContextualSearchTapHandler, OverlayPanelContentViewDelegate {
+        implements OverlayPanelContentViewDelegate {
     // Layouts
     /** A {@link Layout} used for showing a normal web page. */
     protected final StaticLayout mStaticLayout;
-    /** A {@link Layout} used for when the contextual search panel is up. */
-    protected final ContextualSearchLayout mContextualSearchLayout;
 
     // Event Filters
     private final EdgeSwipeEventFilter mStaticEdgeEventFilter;
-    private final ContextualSearchEventFilter mContextualSearchEventFilter;
     private final EdgeSwipeHandler mToolbarSwipeHandler;
 
     // Event Filter Handlers
     /** A {@link GestureHandler} that will delegate all events to {@link #getActiveLayout()}. */
     protected final GestureHandler mGestureHandler;
-    private final EdgeSwipeHandler mOverlayPanelEdgeSwipeHandler;
 
     // Internal State
     private final SparseArray<LayoutTab> mTabCache = new SparseArray<LayoutTab>();
@@ -93,30 +82,26 @@ public class LayoutManagerDocument extends LayoutManager
         Context context = host.getContext();
         LayoutRenderHost renderHost = host.getLayoutRenderHost();
 
-        mOverlayPanelManager = new OverlayPanelManager();
-        mContextualSearchPanel = new ContextualSearchPanel(context, this, mOverlayPanelManager);
-        mReaderModePanel = new ReaderModePanel(context, this, mOverlayPanelManager, this);
-
         // Build Event Filter Handlers
-        mOverlayPanelEdgeSwipeHandler = new OverlayPanelEdgeSwipeHandler(this);
         mGestureHandler = new GestureHandlerLayoutDelegate(this);
         mToolbarSwipeHandler = new ToolbarSwipeHandler(this);
 
         // Build Event Filters
         mStaticEdgeEventFilter =
                 new EdgeSwipeEventFilter(context, this, new StaticEdgeSwipeHandler());
-        mContextualSearchEventFilter = new ContextualSearchEventFilter(
-                context, this, mGestureHandler, mOverlayPanelManager);
-        EventFilter contextualSearchStaticEventFilter = new ContextualSearchStaticEventFilter(
-                context, this, mOverlayPanelManager, mOverlayPanelEdgeSwipeHandler, this);
-        EventFilter staticCascadeEventFilter = new CascadeEventFilter(context, this,
-                new EventFilter[] {contextualSearchStaticEventFilter, mStaticEdgeEventFilter});
+
+        mOverlayPanelManager = new OverlayPanelManager();
 
         // Build Layouts
         mStaticLayout = new StaticLayout(
-                context, this, renderHost, staticCascadeEventFilter, mOverlayPanelManager);
-        mContextualSearchLayout = new ContextualSearchLayout(
-                context, this, renderHost, mContextualSearchEventFilter, mOverlayPanelManager);
+                context, this, renderHost, mStaticEdgeEventFilter, mOverlayPanelManager);
+
+        // Contextual Search scene overlay.
+        mContextualSearchPanel = new ContextualSearchPanel(context, this, this,
+                mOverlayPanelManager);
+
+        // Reader Mode scene overlay.
+        mReaderModePanel = new ReaderModePanel(context, this, this, mOverlayPanelManager, this);
 
         // Set up layout parameters
         mStaticLayout.setLayoutHandlesTabLifecycles(true);
@@ -130,6 +115,9 @@ public class LayoutManagerDocument extends LayoutManager
             ContextualSearchManagementDelegate contextualSearchDelegate,
             ReaderModeManagerDelegate readerModeDelegate,
             DynamicResourceLoader dynamicResourceLoader) {
+        // Add any SceneOverlays to a layout.
+        addAllSceneOverlays();
+
         // Save state
         mContextualSearchDelegate = contextualSearchDelegate;
 
@@ -138,7 +126,6 @@ public class LayoutManagerDocument extends LayoutManager
 
         // Initialize Layouts
         mStaticLayout.setTabModelSelector(selector, content);
-        mContextualSearchLayout.setTabModelSelector(selector, content);
 
         // Initialize Contextual Search Panel
         mContextualSearchPanel.setManagementDelegate(contextualSearchDelegate);
@@ -155,6 +142,7 @@ public class LayoutManagerDocument extends LayoutManager
 
         // Set the dynamic resource loader for all overlay panels.
         mOverlayPanelManager.setDynamicResourceLoader(dynamicResourceLoader);
+        mOverlayPanelManager.setContainerView(androidContentContainer);
 
         mTabModelSelectorTabObserver = new TabModelSelectorTabObserver(selector) {
             @Override
@@ -182,7 +170,6 @@ public class LayoutManagerDocument extends LayoutManager
         super.destroy();
 
         if (mStaticLayout != null) mStaticLayout.destroy();
-        if (mContextualSearchLayout != null) mContextualSearchLayout.destroy();
         if (mOverlayPanelManager != null) mOverlayPanelManager.destroy();
         if (mTabModelSelectorTabObserver != null) mTabModelSelectorTabObserver.destroy();
     }
@@ -225,7 +212,15 @@ public class LayoutManagerDocument extends LayoutManager
      */
     protected void addGlobalSceneOverlay(SceneOverlay helper) {
         mStaticLayout.addSceneOverlay(helper);
-        mContextualSearchLayout.addSceneOverlay(helper);
+    }
+
+    /**
+     * Add any {@link SceneOverlay}s to the layout. This can be used to add the overlays in a
+     * particular order.
+     */
+    protected void addAllSceneOverlays() {
+        mStaticLayout.addSceneOverlay(mContextualSearchPanel);
+        mStaticLayout.addSceneOverlay(mReaderModePanel);
     }
 
     /**
@@ -304,27 +299,6 @@ public class LayoutManagerDocument extends LayoutManager
     }
 
     @Override
-    public void handleTapContextualSearchBar(long time, float x, float y) {
-        if (getActiveLayout() == mContextualSearchLayout) return;
-
-        OverlayPanel panel = mOverlayPanelManager.getActivePanel();
-        if (panel == null) return;
-
-        // When not in compatibility mode, tapping on the Search Bar will expand the Panel,
-        // therefore we must start showing the ContextualSearchLayout.
-        // TODO(pedrosimonetti): once we implement the close button, a tap in the Panel might
-        // trigger the Panel to close, not expand, so in that case we don't want to show the
-        // ContextualSearchLayout. Coordinate with dtrainor@ to solve this. It might be
-        // necessary for the ContextualSearchPanel to be able to trigger the display of the
-        // ContextualSearchLayout.
-        if (panel.supportsContextualSearchLayout()) {
-            showContextualSearchLayout(true);
-        }
-
-        panel.handleClick(time, x, y);
-    }
-
-    @Override
     public void setOverlayPanelContentViewCore(ContentViewCore contentViewCore) {
         mHost.onContentViewCoreAdded(contentViewCore);
     }
@@ -336,14 +310,6 @@ public class LayoutManagerDocument extends LayoutManager
         if (tab != null) tab.updateFullscreenEnabledState();
     }
 
-    private void showContextualSearchLayout(boolean animate) {
-        ContentViewCore cvc = getCurrentTabContentViewCore();
-        if (cvc != null) {
-            cvc.preserveSelectionOnNextLossOfFocus();
-        }
-        startShowing(mContextualSearchLayout, animate);
-    }
-
     private ContentViewCore getCurrentTabContentViewCore() {
         if (getTabModelSelector() == null) return null;
         Tab tab = getTabModelSelector().getCurrentTab();
@@ -365,31 +331,6 @@ public class LayoutManagerDocument extends LayoutManager
         }
     }
 
-    private class OverlayPanelEdgeSwipeHandler extends EdgeSwipeHandlerLayoutDelegate {
-        public OverlayPanelEdgeSwipeHandler(LayoutProvider provider) {
-            super(provider);
-        }
-
-        @Override
-        public void swipeStarted(ScrollDirection direction, float x, float y) {
-            OverlayPanel panel = mOverlayPanelManager.getActivePanel();
-            if (getActiveLayout() != mContextualSearchLayout && panel != null
-                    && panel.supportsContextualSearchLayout()) {
-                showContextualSearchLayout(false);
-            }
-
-            if (panel != null && !panel.onInterceptBarSwipe()) {
-                super.swipeStarted(direction, x, y);
-            }
-        }
-
-        @Override
-        public boolean isSwipeEnabled(ScrollDirection direction) {
-            OverlayPanel panel = mOverlayPanelManager.getActivePanel();
-            return direction == ScrollDirection.UP && panel != null && panel.isShowing();
-        }
-    }
-
     /**
      * A {@link EdgeSwipeHandler} meant to respond to edge events for the toolbar.
      */