Merge java_staging/src into java/src.

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

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
deleted file mode 100644
index 35979938c7186e4a4aae50a11b21002f8f3f02db..0000000000000000000000000000000000000000
--- a/chrome/android/java_staging/src/org/chromium/chrome/browser/compositor/layouts/LayoutManagerDocument.java
+++ /dev/null
@@ -1,450 +0,0 @@
-// Copyright 2015 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.chrome.browser.compositor.layouts;
-
-import android.annotation.TargetApi;
-import android.content.Context;
-import android.graphics.RectF;
-import android.os.Build;
-import android.util.SparseArray;
-import android.view.MotionEvent;
-import android.view.ViewGroup;
-
-import org.chromium.chrome.browser.ChromeMobileApplication;
-import org.chromium.chrome.browser.Tab;
-import org.chromium.chrome.browser.UrlConstants;
-import org.chromium.chrome.browser.compositor.bottombar.contextualsearch.ContextualSearchPanel;
-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.ContextualSearchManager.ContextualSearchContentViewDelegate;
-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.ReaderModeEdgeSwipeHandler;
-import org.chromium.chrome.browser.dom_distiller.ReaderModePanel;
-import org.chromium.chrome.browser.dom_distiller.ReaderModeStaticEventFilter;
-import org.chromium.chrome.browser.dom_distiller.ReaderModeStaticEventFilter.ReaderModePanelSelector;
-import org.chromium.chrome.browser.dom_distiller.ReaderModeStaticEventFilter.ReaderModeTapHandler;
-import org.chromium.chrome.browser.fullscreen.FullscreenManager;
-import org.chromium.chrome.browser.tab.ChromeTab;
-import org.chromium.chrome.browser.tabmodel.TabCreatorManager;
-import org.chromium.chrome.browser.tabmodel.TabModel;
-import org.chromium.chrome.browser.tabmodel.TabModelSelector;
-import org.chromium.chrome.browser.tabmodel.TabModelSelectorTabObserver;
-import org.chromium.chrome.browser.tabmodel.TabModelUtils;
-import org.chromium.chrome.browser.tabmodel.document.DocumentTabModelSelector;
-import org.chromium.chrome.browser.util.FeatureUtilities;
-import org.chromium.content.browser.ContentViewCore;
-import org.chromium.ui.resources.dynamics.DynamicResourceLoader;
-
-import java.util.List;
-
-/**
- * A {@link Layout} controller for a simple document use case.  This class is responsible for
- * driving all {@link Layout}s that get shown via the {@link LayoutManager}.
- */
-public class LayoutManagerDocument extends LayoutManager
-        implements ContextualSearchTapHandler, ContextualSearchContentViewDelegate,
-                ReaderModeTapHandler {
-    // 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 mContextualSearchEdgeSwipeHandler;
-    private final EdgeSwipeHandler mReaderModeEdgeSwipeHandler;
-
-    // Internal State
-    private final SparseArray<LayoutTab> mTabCache = new SparseArray<LayoutTab>();
-    private final ContextualSearchPanel mContextualSearchPanel;
-    /** A delegate for interacting with the Contextual Search manager. */
-    protected ContextualSearchManagementDelegate mContextualSearchDelegate;
-
-    @SuppressWarnings("unused") private TabModelSelectorTabObserver mTabModelSelectorTabObserver;
-    private final ReaderModePanelSelector mReaderModePanelSelector;
-
-    /**
-     * Creates a {@link LayoutManagerDocument} instance.
-     * @param host            A {@link LayoutManagerHost} instance.
-     */
-    public LayoutManagerDocument(LayoutManagerHost host) {
-        super(host);
-        Context context = host.getContext();
-        LayoutRenderHost renderHost = host.getLayoutRenderHost();
-
-        mContextualSearchPanel = new ContextualSearchPanel(context, this);
-
-        mReaderModePanelSelector = new ReaderModePanelSelector() {
-            @Override
-            public ReaderModePanel getActiveReaderModePanel() {
-                if (mStaticLayout == null || !mStaticLayout.isActive()) return null;
-                return mStaticLayout.getReaderModePanel();
-            }
-        };
-
-        // Build Event Filter Handlers
-        mContextualSearchEdgeSwipeHandler = new ContextualSearchEdgeSwipeHandler(this);
-        mReaderModeEdgeSwipeHandler = new ReaderModeEdgeSwipeHandler(
-                mReaderModePanelSelector, 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, mContextualSearchPanel);
-        EventFilter contextualSearchStaticEventFilter = new ContextualSearchStaticEventFilter(
-                context, this, mContextualSearchPanel, mContextualSearchEdgeSwipeHandler, this);
-        EventFilter readerModeStaticEventFilter = new ReaderModeStaticEventFilter(
-                context, this, mReaderModePanelSelector, mReaderModeEdgeSwipeHandler, this);
-        EventFilter staticCascadeEventFilter = new CascadeEventFilter(context, this,
-                new EventFilter[] {readerModeStaticEventFilter, contextualSearchStaticEventFilter,
-                        mStaticEdgeEventFilter});
-
-        // Build Layouts
-        mStaticLayout = new StaticLayout(
-                context, this, renderHost, staticCascadeEventFilter, mContextualSearchPanel);
-        mContextualSearchLayout = new ContextualSearchLayout(
-                context, this, renderHost, mContextualSearchEventFilter, mContextualSearchPanel);
-
-        // Set up layout parameters
-        mStaticLayout.setLayoutHandlesTabLifecycles(true);
-
-        setNextLayout(null);
-    }
-
-    @Override
-    public void init(TabModelSelector selector, TabCreatorManager creator,
-            TabContentManager content, ViewGroup androidContentContainer,
-            ContextualSearchManagementDelegate contextualSearchDelegate,
-            DynamicResourceLoader dynamicResourceLoader) {
-        // Save state
-        mContextualSearchDelegate = contextualSearchDelegate;
-
-        // Initialize Event Filters
-        mStaticEdgeEventFilter.setTabModelSelector(selector);
-        mContextualSearchEventFilter.setManagementDelegate(contextualSearchDelegate);
-
-        // Initialize Layouts
-        mStaticLayout.setTabModelSelector(selector, content);
-        mContextualSearchLayout.setTabModelSelector(selector, content);
-
-        // Initialize Contextual Search Panel
-        mContextualSearchPanel.setManagementDelegate(contextualSearchDelegate);
-        mContextualSearchPanel.setDynamicResourceLoader(dynamicResourceLoader);
-
-        // Set back flow communication
-        if (contextualSearchDelegate != null) {
-            contextualSearchDelegate.setContextualSearchPanelDelegate(mContextualSearchPanel);
-        }
-
-        mTabModelSelectorTabObserver = new TabModelSelectorTabObserver(selector) {
-            @Override
-            public void onContentChanged(Tab tab) {
-                initLayoutTabFromHost(tab.getId());
-            }
-
-            @Override
-            public void onBackgroundColorChanged(Tab tab, int color) {
-                initLayoutTabFromHost(tab.getId());
-            }
-        };
-
-        super.init(selector, creator, content, androidContentContainer, contextualSearchDelegate,
-                dynamicResourceLoader);
-    }
-
-    @Override
-    public void destroy() {
-        super.destroy();
-
-        if (mStaticLayout != null) mStaticLayout.destroy();
-        if (mContextualSearchLayout != null) mContextualSearchLayout.destroy();
-        if (mTabModelSelectorTabObserver != null) mTabModelSelectorTabObserver.destroy();
-    }
-
-    @Override
-    public void getVirtualViews(List<VirtualView> views) {
-        // Nothing to do here yet.
-    }
-
-    @Override
-    protected void onViewportChanged(RectF viewportDp) {
-        super.onViewportChanged(viewportDp);
-        for (int i = 0; i < mTabCache.size(); i++) {
-            // This assumes that the content width/height is always the size of the host.
-            mTabCache.valueAt(i).setContentSize(viewportDp.width(), viewportDp.height());
-        }
-    }
-
-    /**
-     * @return The {@link EdgeSwipeHandler} responsible for processing swipe events for the toolbar.
-     */
-    @Override
-    public EdgeSwipeHandler getTopSwipeHandler() {
-        return mToolbarSwipeHandler;
-    }
-
-    /**
-     * Clears all content associated with {@code tabId} from the internal caches.
-     * @param tabId The id of the tab to clear.
-     */
-    protected void emptyCachesExcept(int tabId) {
-        LayoutTab tab = mTabCache.get(tabId);
-        mTabCache.clear();
-        if (tab != null) mTabCache.put(tabId, tab);
-    }
-
-    /**
-     * Adds the {@link SceneOverlay} across all {@link Layout}s owned by this class.
-     * @param helper A {@link SceneOverlay} instance.
-     */
-    protected void addGlobalSceneOverlay(SceneOverlay helper) {
-        mStaticLayout.addSceneOverlay(helper);
-        mContextualSearchLayout.addSceneOverlay(helper);
-    }
-
-    /**
-     * @param tabId The id of the tab represented by a {@link LayoutTab}.
-     * @return      A {@link LayoutTab} if one exists or {@code null} if none can be found.
-     */
-    protected LayoutTab getExistingLayoutTab(int tabId) {
-        return mTabCache.get(tabId);
-    }
-
-    @Override
-    protected Layout getDefaultLayout() {
-        return mStaticLayout;
-    }
-
-    @Override
-    public void initLayoutTabFromHost(final int tabId) {
-        if (getTabModelSelector() == null || getActiveLayout() == null) return;
-
-        TabModelSelector selector = getTabModelSelector();
-        ChromeTab tab = ChromeTab.fromTab(selector.getTabById(tabId));
-        if (tab == null) return;
-
-        LayoutTab layoutTab = mTabCache.get(tabId);
-        if (layoutTab == null) return;
-
-        String url = tab.getUrl();
-        boolean isNativePage = url != null && url.startsWith(UrlConstants.CHROME_NATIVE_SCHEME);
-        boolean canUseLiveTexture =
-                tab.getContentViewCore() != null && !tab.isShowingSadTab() && !isNativePage;
-        layoutTab.initFromHost(tab.getBackgroundColor(), tab.getFallbackTextureId(),
-                tab.shouldStall(), canUseLiveTexture);
-
-        mHost.requestRender();
-    }
-
-    @Override
-    public LayoutTab createLayoutTab(int id, boolean incognito, boolean showCloseButton,
-            boolean isTitleNeeded, float maxContentWidth, float maxContentHeight) {
-        LayoutTab tab = mTabCache.get(id);
-        if (tab == null) {
-            tab = new LayoutTab(id, incognito, mLastContentWidthDp, mLastContentHeightDp,
-                    showCloseButton, isTitleNeeded);
-            mTabCache.put(id, tab);
-        } else {
-            tab.init(mLastContentWidthDp, mLastContentHeightDp, showCloseButton, isTitleNeeded);
-        }
-        if (maxContentWidth > 0.f) tab.setMaxContentWidth(maxContentWidth);
-        if (maxContentHeight > 0.f) tab.setMaxContentHeight(maxContentHeight);
-
-        return tab;
-    }
-
-    @Override
-    public void releaseTabLayout(int id) {
-        mTabCache.remove(id);
-    }
-
-    @Override
-    public boolean onInterceptTouchEvent(MotionEvent e, boolean isKeyboardShowing) {
-        boolean intercepted = super.onInterceptTouchEvent(e, isKeyboardShowing);
-        if (intercepted) getActiveLayout().unstallImmediately();
-        return intercepted;
-    }
-
-    /**
-     * Should be called when the user presses the back button on the phone.
-     * @return Whether or not the back button was consumed by the active {@link Layout}.
-     */
-    @Override
-    public boolean onBackPressed() {
-        return getActiveLayout() != null && getActiveLayout().onBackPressed();
-    }
-
-    @Override
-    public void handleTapContextualSearchBar(long time, float x, float y) {
-        if (getActiveLayout() == mContextualSearchLayout) return;
-        if (mContextualSearchDelegate == 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 (!mContextualSearchDelegate.isRunningInCompatibilityMode()) {
-            showContextualSearchLayout(true);
-        }
-
-        mContextualSearchPanel.handleClick(time, x, y);
-    }
-
-    @Override
-    public void setContextualSearchContentViewCore(ContentViewCore contentViewCore) {
-        mHost.onContentViewCoreAdded(contentViewCore);
-    }
-
-    @Override
-    public void releaseContextualSearchContentViewCore() {
-        if (getTabModelSelector() == null) return;
-        Tab tab = getTabModelSelector().getCurrentTab();
-        if (tab != null) tab.updateFullscreenEnabledState();
-    }
-
-    private void showContextualSearchLayout(boolean animate) {
-        mContextualSearchDelegate.preserveBasePageSelectionOnNextLossOfFocus();
-        startShowing(mContextualSearchLayout, animate);
-    }
-
-    private class StaticEdgeSwipeHandler extends EmptyEdgeSwipeHandler {
-        @Override
-        public void swipeStarted(ScrollDirection direction, float x, float y) {
-        }
-
-        @Override
-        public boolean isSwipeEnabled(ScrollDirection direction) {
-            FullscreenManager fullscreenManager = mHost.getFullscreenManager();
-            return direction == ScrollDirection.DOWN && fullscreenManager != null
-                    && fullscreenManager.getPersistentFullscreenMode();
-        }
-    }
-
-    private class ContextualSearchEdgeSwipeHandler extends EdgeSwipeHandlerLayoutDelegate {
-        public ContextualSearchEdgeSwipeHandler(LayoutProvider provider) {
-            super(provider);
-        }
-
-        @Override
-        public void swipeStarted(ScrollDirection direction, float x, float y) {
-            if (isCompatabilityMode()) {
-                mContextualSearchDelegate.openResolvedSearchUrlInNewTab();
-                return;
-            }
-
-            if (getActiveLayout() != mContextualSearchLayout) {
-                showContextualSearchLayout(false);
-            }
-
-            super.swipeStarted(direction, x, y);
-        }
-
-        @Override
-        public boolean isSwipeEnabled(ScrollDirection direction) {
-            return direction == ScrollDirection.UP && mContextualSearchDelegate != null;
-        }
-
-        private boolean isCompatabilityMode() {
-            return mContextualSearchDelegate != null
-                    && mContextualSearchDelegate.isRunningInCompatibilityMode();
-        }
-    }
-
-    /**
-     * A {@link EdgeSwipeHandler} meant to respond to edge events for the toolbar.
-     */
-    private class ToolbarSwipeHandler extends EdgeSwipeHandlerLayoutDelegate {
-        private ScrollDirection mLastScroll;
-
-        /**
-         * Creates an instance of the {@link ToolbarSwipeHandler}.
-         * @param provider A {@link LayoutProvider} instance.
-         */
-        public ToolbarSwipeHandler(LayoutProvider provider) {
-            super(provider);
-        }
-
-        @Override
-        public void swipeStarted(ScrollDirection direction, float x, float y) {
-            super.swipeStarted(direction, x, y);
-            mLastScroll = direction;
-        }
-
-        @Override
-        public void swipeFinished() {
-            super.swipeFinished();
-            changeTabs();
-        }
-
-        @Override
-        public void swipeFlingOccurred(float x, float y, float tx, float ty, float vx, float vy) {
-            super.swipeFlingOccurred(x, y, tx, ty, vx, vy);
-            changeTabs();
-        }
-
-        @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-        private void changeTabs() {
-            DocumentTabModelSelector selector =
-                    ChromeMobileApplication.getDocumentTabModelSelector();
-            TabModel tabModel = selector.getCurrentModel();
-            int currentIndex = tabModel.index();
-            if (mLastScroll == ScrollDirection.LEFT) {
-                if (currentIndex < tabModel.getCount() - 1) {
-                    TabModelUtils.setIndex(tabModel, currentIndex + 1);
-                }
-            } else {
-                if (currentIndex > 0) {
-                    TabModelUtils.setIndex(tabModel, currentIndex - 1);
-                }
-            }
-        }
-
-        @Override
-        public boolean isSwipeEnabled(ScrollDirection direction) {
-            FullscreenManager manager = mHost.getFullscreenManager();
-            if (getActiveLayout() != mStaticLayout
-                    || !DeviceClassManager.enableToolbarSwipe(
-                               FeatureUtilities.isDocumentMode(mHost.getContext()))
-                    || (manager != null && manager.getPersistentFullscreenMode())) {
-                return false;
-            }
-
-            return direction == ScrollDirection.LEFT || direction == ScrollDirection.RIGHT;
-        }
-    }
-
-    @Override
-    public void handleTapReaderModeBar(long time, float x, float y) {
-        ReaderModePanel activePanel = mReaderModePanelSelector.getActiveReaderModePanel();
-        if (activePanel != null) activePanel.handleClick(time, x, y);
-    }
-}