Upstream oodles of Chrome for Android code into Chromium.

chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/BookmarksPage.java

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/BookmarksPage.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/BookmarksPage.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/BookmarksPage.java
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index 0000000000000000000000000000000000000000..282a36ca00e7f4ef9a05cefae3616715389ab91a
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@@ -0,0 +1,580 @@
+// 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.ntp;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+import android.content.res.Resources;
+import android.graphics.Bitmap;
+import android.graphics.Canvas;
+import android.preference.PreferenceManager;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.google.android.apps.chrome.R;
+
+import org.chromium.chrome.browser.BookmarksBridge;
+import org.chromium.chrome.browser.BookmarksBridge.BookmarkItem;
+import org.chromium.chrome.browser.BookmarksBridge.BookmarkModelObserver;
+import org.chromium.chrome.browser.BookmarksBridge.BookmarksCallback;
+import org.chromium.chrome.browser.NativePage;
+import org.chromium.chrome.browser.Tab;
+import org.chromium.chrome.browser.UrlConstants;
+import org.chromium.chrome.browser.bookmark.EditBookmarkHelper;
+import org.chromium.chrome.browser.compositor.layouts.content.InvalidationAwareThumbnailProvider;
+import org.chromium.chrome.browser.favicon.FaviconHelper;
+import org.chromium.chrome.browser.favicon.FaviconHelper.FaviconImageCallback;
+import org.chromium.chrome.browser.ntp.BookmarksPageView.BookmarksPageManager;
+import org.chromium.chrome.browser.preferences.PrefServiceBridge;
+import org.chromium.chrome.browser.profiles.Profile;
+import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
+import org.chromium.chrome.browser.tabmodel.TabModelSelector;
+import org.chromium.chrome.browser.util.ViewUtils;
+import org.chromium.components.bookmarks.BookmarkId;
+import org.chromium.components.bookmarks.BookmarkType;
+import org.chromium.content_public.browser.LoadUrlParams;
+
+import java.util.List;
+
+/**
+ * Provides functionality when the user interacts with the bookmarks page. This class supports
+ * the regular bookmarks page as well as "select bookmark mode", in which context menus are
+ * disabled and clicking a bookmark just notifies a listener instead of loading the bookmark URL.
+ */
+public class BookmarksPage implements NativePage, InvalidationAwareThumbnailProvider {
+
+    private static final String LAST_USED_BOOKMARK_FOLDER_ID = "last_used_folder_id";
+
+    private static final int PAGE_MODE_NORMAL = 0;
+    private static final int PAGE_MODE_SELECT_BOOKMARK = 1;
+    private static final int PAGE_MODE_DOCUMENT = 2;
+
+    private final Profile mProfile;
+    private BookmarksBridge mBookmarksBridge;
+    private FaviconHelper mFaviconHelper;
+
+    private final BookmarksPageView mPageView;
+    private final String mTitle;
+    private final int mBackgroundColor;
+
+    // Whether destroy() has been called.
+    private boolean mIsDestroyed;
+
+    private BookmarkId mCurrentFolderId;
+
+    private final SharedPreferences mSharedPreferences;
+
+    /**
+     * Interface to be notified when the user clicks on a bookmark. To be used with
+     * buildPageForShortcutActivity().
+     */
+    public interface BookmarkSelectedListener {
+        /**
+         * Called when a bookmark is selected.
+         * @param url The url of the selected bookmark.
+         * @param title The title of the selected bookmark.
+         * @param favicon The favicon of the selected bookmark.
+         */
+        void onBookmarkSelected(String url, String title, Bitmap favicon);
+
+        /**
+         * Called when a new tab has been opened in a new tab.
+         */
+        void onNewTabOpened();
+    }
+
+    /**
+     * Creates a BookmarksPage to be shown in a tab.
+     * @param context The view context for showing the page.
+     * @param tab The tab in which the page will be shown.
+     * @param tabModelSelector The TabModelSelector to use when opening new tabs from the bookmarks
+     *         page.
+     * @return The new BookmarksPage object.
+     */
+    public static BookmarksPage buildPage(Context context, Tab tab,
+            TabModelSelector tabModelSelector) {
+        return new BookmarksPage(context, tab.getProfile(), tab, tabModelSelector, null,
+                PAGE_MODE_NORMAL);
+    }
+
+    /**
+     * Creates a BookmarksPage to be shown in the ShortcutActivity.
+     * @param context The view context for showing the page.
+     * @param profile The profile from which to load bookmarks.
+     * @param listener The BookmarkSelectedListener to notify when the user clicks a bookmark.
+     * @return The new BookmarksPage object.
+     */
+    public static BookmarksPage buildPageInSelectBookmarkMode(Context context,
+            Profile profile, BookmarkSelectedListener listener) {
+        return new BookmarksPage(context, profile, null, null, listener, PAGE_MODE_SELECT_BOOKMARK);
+    }
+
+    /**
+     * Creates a BookmarksPage to be shown in document mode.
+     * @param context The view context for showing the page.
+     * @param tab The tab from which bookmarks page is loaded.
+     * @param tabModelSelector The TabModelSelector to use when opening new tabs from the bookmarks
+     *         page.
+     * @param profile The profile from which to load bookmarks.
+     * @param listener The BookmarkSelectedListener to notify when the user clicks a bookmark.
+     * @return The new BookmarksPage object.
+     */
+    public static BookmarksPage buildPageInDocumentMode(Context context, Tab tab,
+            TabModelSelector tabModelSelector, Profile profile, BookmarkSelectedListener listener) {
+        return new BookmarksPage(
+                context, profile, tab, tabModelSelector, listener, PAGE_MODE_DOCUMENT);
+    }
+
+    /**
+     * Delegates user triggered actions for the bookmarks page.
+     */
+    private class BookmarksPageManagerImpl implements BookmarksPageManager {
+        protected Tab mTab;
+        protected TabModelSelector mTabModelSelector;
+
+        public BookmarksPageManagerImpl(Tab tab, TabModelSelector tabModelSelector) {
+            mTab = tab;
+            mTabModelSelector = tabModelSelector;
+        }
+
+        protected void recordOpenedBookmark() {
+            if (!isIncognito()) {
+                NewTabPageUma.recordAction(NewTabPageUma.ACTION_OPENED_BOOKMARK);
+            }
+        }
+
+        @Override
+        public boolean isDestroyed() {
+            return mIsDestroyed;
+        }
+
+        @Override
+        public boolean isIncognito() {
+            return mTab.isIncognito();
+        }
+
+        @Override
+        public boolean shouldShowOpenInNewTab() {
+            return !isIncognito();
+        }
+
+        @Override
+        public boolean shouldShowOpenInNewIncognitoTab() {
+            return PrefServiceBridge.getInstance().isIncognitoModeEnabled();
+        }
+
+        @Override
+        public boolean isContextMenuEnabled() {
+            return true;
+        }
+
+        @Override
+        public void open(BookmarkItemView item) {
+            if (item.isFolder()) {
+                mTab.loadUrl(new LoadUrlParams(
+                        UrlConstants.BOOKMARKS_FOLDER_URL + item.getBookmarkId().toString()));
+            } else {
+                recordOpenedBookmark();
+                mTab.loadUrl(new LoadUrlParams(item.getUrl()));
+            }
+        }
+
+        @Override
+        public void openInNewTab(BookmarkItemView item) {
+            assert !item.isFolder();
+            recordOpenedBookmark();
+            mTabModelSelector.openNewTab(new LoadUrlParams(item.getUrl()),
+                    TabLaunchType.FROM_LONGPRESS_BACKGROUND, mTab,
+                    mTabModelSelector.isIncognitoSelected());
+        }
+
+        @Override
+        public void openInNewIncognitoTab(BookmarkItemView item) {
+            assert !item.isFolder();
+            recordOpenedBookmark();
+            mTabModelSelector.openNewTab(new LoadUrlParams(item.getUrl()),
+                    TabLaunchType.FROM_LONGPRESS_BACKGROUND, mTab, true);
+        }
+
+        @Override
+        public void openFolder(BookmarkFolderHierarchyItem item) {
+            mTab.loadUrl(new LoadUrlParams(
+                    UrlConstants.BOOKMARKS_FOLDER_URL + item.getFolderId()));
+        }
+
+        @Override
+        public void delete(BookmarkItemView item) {
+            if (mBookmarksBridge == null) return;
+            mBookmarksBridge.deleteBookmark(item.getBookmarkId());
+        }
+
+        @Override
+        public void edit(BookmarkItemView item) {
+            BookmarksPage.this.edit(item);
+        }
+
+        @Override
+        public void getFaviconImageForUrl(
+                String url, int size, FaviconImageCallback faviconCallback) {
+            BookmarksPage.this.getFaviconImageForUrl(url, size, faviconCallback);
+        }
+    }
+
+    private class DocumentModeManager extends BookmarksPageManagerImpl {
+        private final BookmarkSelectedListener mListener;
+
+        public DocumentModeManager(Tab tab, TabModelSelector tabModelSelector,
+                BookmarkSelectedListener listener) {
+            super(tab, tabModelSelector);
+            mListener = listener;
+        }
+
+        @Override
+        public void openInNewTab(BookmarkItemView item) {
+            super.openInNewTab(item);
+            mListener.onNewTabOpened();
+        }
+
+        @Override
+        public void openInNewIncognitoTab(BookmarkItemView item) {
+            super.openInNewIncognitoTab(item);
+            mListener.onNewTabOpened();
+        }
+
+        @Override
+        public void open(BookmarkItemView item) {
+            if (item.isFolder()) {
+                updateBookmarksPageContents(item.getBookmarkId(), false);
+            } else {
+                recordOpenedBookmark();
+                mListener.onBookmarkSelected(item.getUrl(), item.getTitle(), item.getFavicon());
+            }
+        }
+
+        @Override
+        public void openFolder(BookmarkFolderHierarchyItem item) {
+            updateBookmarksPageContents(item.getFolderId(), false);
+        }
+    }
+
+    private BookmarksPage(Context context, Profile profile, Tab tab,
+            TabModelSelector tabModelSelector, BookmarkSelectedListener listener,
+            int pageMode) {
+        mProfile = profile;
+        mFaviconHelper = new FaviconHelper();
+        mTitle = context.getResources().getString(R.string.ntp_bookmarks);
+        mBackgroundColor = context.getResources().getColor(R.color.ntp_bg);
+        mCurrentFolderId = new BookmarkId(BookmarkId.INVALID_FOLDER_ID, BookmarkType.NORMAL);
+        mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
+
+        LayoutInflater inflater = LayoutInflater.from(context);
+        mPageView = (BookmarksPageView) inflater.inflate(R.layout.bookmarks_page, null);
+
+        if (pageMode == PAGE_MODE_NORMAL || pageMode == PAGE_MODE_DOCUMENT) {
+            // mPageView (which has a transparent background) needs top padding of size
+            // R.dimen.tab_strip_height so that the bookmarks page isn't drawn over the tab strip.
+            // mPageView's first child (which has a white background) needs top padding of size
+            // R.dimen.toolbar_height_no_shadow so that the bookmarks page contents start below
+            // the URL bar.
+            // TODO(newt): combine these padding values and apply them just to mPageView, once the
+            // classic NTP is gone. Until then, we need to draw white behind the URL bar so the
+            // animation shown when pressing the "+" button in the tab switcher to open a new tab
+            // on the bookmarks page looks good.
+            Resources res = context.getResources();
+            int tabStripHeight = res.getDimensionPixelOffset(R.dimen.tab_strip_height);
+            int toolbarHeightNoShadow = res.getDimensionPixelOffset(
+                    R.dimen.toolbar_height_no_shadow);
+            mPageView.setPadding(mPageView.getPaddingLeft(), tabStripHeight,
+                    mPageView.getPaddingRight(), mPageView.getPaddingBottom());
+            View v = ((ViewGroup) mPageView).getChildAt(0);
+            v.setPadding(v.getPaddingLeft(), toolbarHeightNoShadow, v.getPaddingRight(),
+                    v.getPaddingBottom());
+        }
+
+        BookmarksPageManager manager = null;
+        switch (pageMode) {
+            case PAGE_MODE_NORMAL:
+                manager = buildManager(tab, tabModelSelector);
+                break;
+            case PAGE_MODE_SELECT_BOOKMARK:
+                manager = buildManagerForSelectBookmarkMode(listener);
+                break;
+            case PAGE_MODE_DOCUMENT:
+                manager = buildManagerForDocumentMode(tab, tabModelSelector, listener);
+                break;
+            default:
+                assert false;
+                break;
+        }
+
+        mPageView.initialize(manager);
+
+        mBookmarksBridge = new BookmarksBridge(mProfile);
+        mBookmarksBridge.addObserver(new BookmarkModelObserver() {
+            private void updateIfNodeIsCurrentFolder(BookmarkId nodeId) {
+                updateIfEitherNodeIsCurrentFolder(nodeId, nodeId);
+            }
+
+            private void updateIfEitherNodeIsCurrentFolder(BookmarkId firstNodeId,
+                    BookmarkId secondNodeId) {
+                if ((mCurrentFolderId.equals(firstNodeId)
+                        || mCurrentFolderId.equals(secondNodeId))) {
+                    updateBookmarksPageContents(mCurrentFolderId, true);
+                }
+            }
+
+            @Override
+            public void bookmarkNodeMoved(BookmarkItem oldParent,
+                    int oldIndex, BookmarkItem newParent, int newIndex) {
+                updateIfEitherNodeIsCurrentFolder(oldParent.getId(), newParent.getId());
+            }
+
+            @Override
+            public void bookmarkNodeAdded(BookmarkItem parent, int index) {
+                updateIfNodeIsCurrentFolder(parent.getId());
+            }
+
+            @Override
+            public void bookmarkNodeRemoved(BookmarkItem parent, int oldIndex, BookmarkItem node,
+                    boolean isExtensiveBookmarkChangesHappening) {
+                // Since the node is already removed, it does not have a parent. Hence, we need
+                // to pass the old parent information to check if it is the current folder.
+                // node.getParentId() is INVALID_FOLDER_ID.
+                updateIfEitherNodeIsCurrentFolder(node.getId(), parent.getId());
+            }
+
+            @Override
+            public void bookmarkNodeChanged(BookmarkItem node) {
+                updateIfEitherNodeIsCurrentFolder(node.getId(), node.getParentId());
+            }
+
+            @Override
+            public void bookmarkNodeChildrenReordered(BookmarkItem node) {
+                updateIfNodeIsCurrentFolder(node.getId());
+            }
+
+            @Override
+            public void bookmarkModelLoaded() {
+                // Purposefully don't do anything because we will be getting callbacks.
+            }
+
+            @Override
+            public void bookmarkModelChanged() {
+                updateBookmarksPageContents(mCurrentFolderId, true);
+            }
+        });
+    }
+
+    private BookmarksPageManager buildManager(Tab tab, TabModelSelector tabModelSelector) {
+        return new BookmarksPageManagerImpl(tab, tabModelSelector);
+    }
+
+    private BookmarksPageManager buildManagerForDocumentMode(
+            Tab tab, TabModelSelector tabModelSelector, BookmarkSelectedListener listener) {
+        return new DocumentModeManager(tab, tabModelSelector, listener);
+    }
+
+    private BookmarksPageManager buildManagerForSelectBookmarkMode(
+            final BookmarkSelectedListener listener) {
+        return new BookmarksPageManager() {
+            @Override
+            public boolean isDestroyed() {
+                return mIsDestroyed;
+            }
+
+            @Override
+            public boolean isIncognito() {
+                return false;
+            }
+
+            @Override
+            public boolean shouldShowOpenInNewTab() {
+                return false;
+            }
+
+            @Override
+            public boolean shouldShowOpenInNewIncognitoTab() {
+                return false;
+            }
+
+            @Override
+            public boolean isContextMenuEnabled() {
+                return false;
+            }
+
+            @Override
+            public void open(BookmarkItemView item) {
+                if (item.isFolder()) {
+                    updateBookmarksPageContents(item.getBookmarkId(), false);
+                } else {
+                    listener.onBookmarkSelected(item.getUrl(), item.getTitle(), item.getFavicon());
+                }
+            }
+
+            @Override
+            public void openInNewTab(BookmarkItemView item) {
+            }
+
+            @Override
+            public void openInNewIncognitoTab(BookmarkItemView item) {
+            }
+
+            @Override
+            public void openFolder(BookmarkFolderHierarchyItem item) {
+                updateBookmarksPageContents(item.getFolderId(), false);
+            }
+
+            @Override
+            public void delete(BookmarkItemView item) {
+            }
+
+            @Override
+            public void edit(BookmarkItemView item) {
+            }
+
+            @Override
+            public void getFaviconImageForUrl(
+                    String url, int size, FaviconImageCallback faviconCallback) {
+                BookmarksPage.this.getFaviconImageForUrl(url, size, faviconCallback);
+            }
+        };
+    }
+
+    private void getFaviconImageForUrl(String url, int size, FaviconImageCallback faviconCallback) {
+        if (mFaviconHelper == null) return;
+        mFaviconHelper.getLocalFaviconImageForURL(mProfile, url,
+                FaviconHelper.FAVICON | FaviconHelper.TOUCH_ICON
+                        | FaviconHelper.TOUCH_PRECOMPOSED_ICON,
+                size, faviconCallback);
+    }
+
+    private void edit(BookmarkItemView item) {
+        Context context = mPageView.getContext();
+        if (item.getBookmarkId().getType() == BookmarkType.PARTNER) {
+            EditBookmarkHelper.editPartnerBookmark(context, mProfile, item.getBookmarkId().getId(),
+                    item.getTitle(), item.isFolder());
+        } else {
+            EditBookmarkHelper.editBookmark(context, item.getBookmarkId().getId(), item.isFolder());
+        }
+    }
+
+    /**
+     * Updates the contents of the bookmark page if the current folder has changed.
+     * @param folderId The ID of the folder to load.
+     * @param force Whether to force the update even if the folder has not changed.
+     */
+    private void updateBookmarksPageContents(BookmarkId folderId, boolean force) {
+        if (mBookmarksBridge == null) return;
+        if (!force && mCurrentFolderId.equals(folderId)) return;
+        BookmarksCallback callbackWrapper = new BookmarksCallback() {
+            @Override
+            public void onBookmarksFolderHierarchyAvailable(BookmarkId folderId,
+                    List<BookmarkItem> bookmarksList) {
+                mPageView.onBookmarksFolderHierarchyAvailable(folderId, bookmarksList);
+            }
+
+            @Override
+            public void onBookmarksAvailable(BookmarkId folderId,
+                    List<BookmarkItem> bookmarksList) {
+                // Update the folder ID based on the response, as sometimes it will be changed
+                // from the passed in value (if the ID passed in was invalid).
+                mCurrentFolderId = folderId;
+                updateLastUsedFolderId();
+                mPageView.onBookmarksAvailable(folderId, bookmarksList);
+            }
+        };
+        mBookmarksBridge.getBookmarksForFolder(folderId, callbackWrapper);
+        mBookmarksBridge.getCurrentFolderHierarchy(folderId, callbackWrapper);
+    }
+
+    private void updateLastUsedFolderId() {
+        mSharedPreferences.edit().putString(
+                LAST_USED_BOOKMARK_FOLDER_ID, mCurrentFolderId.toString()).apply();
+    }
+
+    /**
+     * @return The last used bookmark folder id with fallback to the root folder id.
+     */
+    private BookmarkId getLastUsedFolderId() {
+        // If null shared prefs returns null, getBookmarkIdFromString() returns root folder id.
+        return BookmarkId.getBookmarkIdFromString(mSharedPreferences.getString(
+                LAST_USED_BOOKMARK_FOLDER_ID, null));
+    }
+
+    // NativePage overrides
+
+    @Override
+    public String getUrl() {
+        if (mCurrentFolderId.getId() < 0) {
+            return UrlConstants.BOOKMARKS_URL;
+        } else {
+            return UrlConstants.BOOKMARKS_FOLDER_URL + mCurrentFolderId.toString();
+        }
+    }
+
+    @Override
+    public String getTitle() {
+        return mTitle;
+    }
+
+    @Override
+    public int getBackgroundColor() {
+        return mBackgroundColor;
+    }
+
+    @Override
+    public View getView() {
+        return mPageView;
+    }
+
+    /**
+     * Releases internal resources. This must be called eventually, and the object should not used
+     * after calling this.
+     */
+    @Override
+    public void destroy() {
+        if (mFaviconHelper != null) {
+            mFaviconHelper.destroy();
+            mFaviconHelper = null;
+        }
+        if (mBookmarksBridge != null) {
+            mBookmarksBridge.destroy();
+            mBookmarksBridge = null;
+        }
+        mIsDestroyed = true;
+    }
+
+    @Override
+    public String getHost() {
+        return UrlConstants.BOOKMARKS_HOST;
+    }
+
+    @Override
+    public void updateForUrl(String url) {
+        BookmarkId folderId = null;
+        if (url != null && url.startsWith(UrlConstants.BOOKMARKS_FOLDER_URL)) {
+            String fragment = url.substring(UrlConstants.BOOKMARKS_FOLDER_URL.length());
+            if (!fragment.isEmpty()) {
+                folderId = BookmarkId.getBookmarkIdFromString(fragment);
+            }
+        }
+        if (folderId == null) folderId = getLastUsedFolderId();
+        updateBookmarksPageContents(folderId, false);
+    }
+
+    // InvalidationAwareThumbnailProvider
+
+    @Override
+    public boolean shouldCaptureThumbnail() {
+        return mPageView.shouldCaptureThumbnail();
+    }
+
+    @Override
+    public void captureThumbnail(Canvas canvas) {
+        ViewUtils.captureBitmap(mPageView, canvas);
+        mPageView.updateThumbnailState();
+    }
+}