Merge java_staging/src into java/src.

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

Index: chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/RecentTabsPage.java
diff --git a/chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/RecentTabsPage.java b/chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/RecentTabsPage.java
deleted file mode 100644
index 709d47ec4312c3e481525b822277cdb883e44820..0000000000000000000000000000000000000000
--- a/chrome/android/java_staging/src/org/chromium/chrome/browser/ntp/RecentTabsPage.java
+++ /dev/null
@@ -1,274 +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.ntp;
-
-import android.app.Activity;
-import android.graphics.Canvas;
-import android.graphics.Color;
-import android.os.SystemClock;
-import android.view.ContextMenu;
-import android.view.ContextMenu.ContextMenuInfo;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.ExpandableListView;
-
-import org.chromium.base.ActivityState;
-import org.chromium.base.ApplicationStatus;
-import org.chromium.base.metrics.RecordHistogram;
-import org.chromium.chrome.R;
-import org.chromium.chrome.browser.NativePage;
-import org.chromium.chrome.browser.UrlConstants;
-import org.chromium.chrome.browser.compositor.layouts.content.InvalidationAwareThumbnailProvider;
-import org.chromium.chrome.browser.util.ViewUtils;
-
-import java.util.concurrent.TimeUnit;
-
-/**
- * The native recent tabs page. Lists recently closed tabs, open windows and tabs from the user's
- * synced devices, and snapshot documents sent from Chrome to Mobile in an expandable list view.
- */
-public class RecentTabsPage
-        implements NativePage, ApplicationStatus.ActivityStateListener,
-                   ExpandableListView.OnChildClickListener,
-                   ExpandableListView.OnGroupCollapseListener,
-                   ExpandableListView.OnGroupExpandListener, RecentTabsManager.UpdatedCallback,
-                   View.OnAttachStateChangeListener, View.OnCreateContextMenuListener,
-                   InvalidationAwareThumbnailProvider {
-    private final Activity mActivity;
-    private final ExpandableListView mListView;
-    private final String mTitle;
-    private final ViewGroup mView;
-
-    private RecentTabsManager mRecentTabsManager;
-    private RecentTabsRowAdapter mAdapter;
-
-    private boolean mSnapshotContentChanged;
-    private int mSnapshotListPosition;
-    private int mSnapshotListTop;
-    private int mSnapshotWidth;
-    private int mSnapshotHeight;
-
-    /**
-     * Whether the page is in the foreground and is visible.
-     */
-    private boolean mInForeground;
-
-    /**
-     * Whether {@link #mView} is attached to the application window.
-     */
-    private boolean mIsAttachedToWindow;
-
-    /**
-     * The time, whichever is most recent, that the page:
-     * - Moved to the foreground
-     * - Became visible
-     */
-    private long mForegroundTimeMs;
-
-    /**
-     * Constructor returns an instance of RecentTabsPage.
-     *
-     * @param activity The activity this view belongs to.
-     * @param recentTabsManager The RecentTabsManager which provides the model data.
-     */
-    public RecentTabsPage(Activity activity, RecentTabsManager recentTabsManager) {
-        mActivity = activity;
-        mRecentTabsManager = recentTabsManager;
-
-        mTitle = activity.getResources().getString(R.string.recent_tabs);
-        mRecentTabsManager.setUpdatedCallback(this);
-        LayoutInflater inflater = LayoutInflater.from(activity);
-        mView = (ViewGroup) inflater.inflate(R.layout.recent_tabs_page, null);
-        mListView = (ExpandableListView) mView.findViewById(R.id.odp_listview);
-        mAdapter = buildAdapter(activity, recentTabsManager);
-        mListView.setAdapter(mAdapter);
-        mListView.setOnChildClickListener(this);
-        mListView.setGroupIndicator(null);
-        mListView.setOnGroupCollapseListener(this);
-        mListView.setOnGroupExpandListener(this);
-        mListView.setOnCreateContextMenuListener(this);
-
-        mView.addOnAttachStateChangeListener(this);
-        ApplicationStatus.registerStateListenerForActivity(this, activity);
-        // {@link #mInForeground} will be updated once the view is attached to the window.
-
-        onUpdated();
-    }
-
-    private static RecentTabsRowAdapter buildAdapter(Activity activity,
-            RecentTabsManager recentTabsManager) {
-        return new RecentTabsRowAdapter(activity, recentTabsManager);
-    }
-
-    /**
-     * Updates whether the page is in the foreground based on whether the application is in the
-     * foreground and whether {@link #mView} is attached to the application window. If the page is
-     * no longer in the foreground, records the time that the page spent in the foreground to UMA.
-     */
-    private void updateForegroundState() {
-        boolean inForeground = mIsAttachedToWindow
-                && ApplicationStatus.getStateForActivity(mActivity) == ActivityState.RESUMED;
-        if (mInForeground == inForeground) {
-            return;
-        }
-
-        mInForeground = inForeground;
-        if (mInForeground) {
-            mForegroundTimeMs = SystemClock.elapsedRealtime();
-        } else {
-            RecordHistogram.recordTimesHistogram("NewTabPage.RecentTabsPage.TimeVisibleAndroid",
-                    SystemClock.elapsedRealtime() - mForegroundTimeMs, TimeUnit.MILLISECONDS);
-        }
-    }
-
-    // NativePage overrides
-
-    @Override
-    public String getUrl() {
-        return UrlConstants.RECENT_TABS_URL;
-    }
-
-    @Override
-    public String getTitle() {
-        return mTitle;
-    }
-
-    @Override
-    public int getBackgroundColor() {
-        return Color.WHITE;
-    }
-
-    @Override
-    public View getView() {
-        return mView;
-    }
-
-    @Override
-    public String getHost() {
-        return UrlConstants.RECENT_TABS_HOST;
-    }
-
-    @Override
-    public void destroy() {
-        assert getView().getParent() == null : "Destroy called before removed from window";
-        mRecentTabsManager.destroy();
-        mRecentTabsManager = null;
-        mAdapter.notifyDataSetInvalidated();
-        mAdapter = null;
-        mListView.setAdapter((RecentTabsRowAdapter) null);
-
-        mView.removeOnAttachStateChangeListener(this);
-        ApplicationStatus.unregisterActivityStateListener(this);
-    }
-
-    @Override
-    public void updateForUrl(String url) {
-    }
-
-    // ApplicationStatus.ActivityStateListener
-    @Override
-    public void onActivityStateChange(Activity activity, int state) {
-        // Called when the user locks the screen or moves Chrome to the background via the task
-        // switcher.
-        updateForegroundState();
-    }
-
-    // View.OnAttachStateChangeListener
-    @Override
-    public void onViewAttachedToWindow(View view) {
-        // Called when the user opens the RecentTabsPage or switches back to the RecentTabsPage from
-        // another tab.
-        mIsAttachedToWindow = true;
-        updateForegroundState();
-    }
-
-    @Override
-    public void onViewDetachedFromWindow(View view) {
-        // Called when the user navigates from the RecentTabsPage or switches to another tab.
-        mIsAttachedToWindow = false;
-        updateForegroundState();
-    }
-
-    // ExpandableListView.OnChildClickedListener
-    @Override
-    public boolean onChildClick(ExpandableListView parent, View v, int groupPosition,
-            int childPosition, long id) {
-        return mAdapter.getGroup(groupPosition).onChildClick(childPosition);
-    }
-
-    // ExpandableListView.OnGroupExpandedListener
-    @Override
-    public void onGroupExpand(int groupPosition) {
-        mAdapter.getGroup(groupPosition).setCollapsed(false);
-        mSnapshotContentChanged = true;
-    }
-
-    // ExpandableListView.OnGroupCollapsedListener
-    @Override
-    public void onGroupCollapse(int groupPosition) {
-        mAdapter.getGroup(groupPosition).setCollapsed(true);
-        mSnapshotContentChanged = true;
-    }
-
-    // RecentTabsManager.UpdatedCallback
-    @Override
-    public void onUpdated() {
-        mAdapter.notifyDataSetChanged();
-        for (int i = 0; i < mAdapter.getGroupCount(); i++) {
-            if (mAdapter.getGroup(i).isCollapsed()) {
-                mListView.collapseGroup(i);
-            } else {
-                mListView.expandGroup(i);
-            }
-        }
-        mSnapshotContentChanged = true;
-    }
-
-    @Override
-    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
-        // Would prefer to have this context menu view managed internal to RecentTabsGroupView
-        // Unfortunately, setting either onCreateContextMenuListener or onLongClickListener
-        // disables the native onClick (expand/collapse) behaviour of the group view.
-        ExpandableListView.ExpandableListContextMenuInfo info =
-                (ExpandableListView.ExpandableListContextMenuInfo) menuInfo;
-
-        int type = ExpandableListView.getPackedPositionType(info.packedPosition);
-        int groupPosition = ExpandableListView.getPackedPositionGroup(info.packedPosition);
-
-        if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
-            mAdapter.getGroup(groupPosition).onCreateContextMenuForGroup(menu, mActivity);
-        } else if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
-            int childPosition = ExpandableListView.getPackedPositionChild(info.packedPosition);
-            mAdapter.getGroup(groupPosition).onCreateContextMenuForChild(childPosition, menu,
-                    mActivity);
-        }
-    }
-
-    // InvalidationAwareThumbnailProvider
-
-    @Override
-    public boolean shouldCaptureThumbnail() {
-        if (mView.getWidth() == 0 || mView.getHeight() == 0) return false;
-
-        View topItem = mListView.getChildAt(0);
-        return mSnapshotContentChanged
-                || mSnapshotListPosition != mListView.getFirstVisiblePosition()
-                || mSnapshotListTop != (topItem == null ? 0 : topItem.getTop())
-                || mView.getWidth() != mSnapshotWidth
-                || mView.getHeight() != mSnapshotHeight;
-    }
-
-    @Override
-    public void captureThumbnail(Canvas canvas) {
-        ViewUtils.captureBitmap(mView, canvas);
-        mSnapshotContentChanged = false;
-        mSnapshotListPosition = mListView.getFirstVisiblePosition();
-        View topItem = mListView.getChildAt(0);
-        mSnapshotListTop = topItem == null ? 0 : topItem.getTop();
-        mSnapshotWidth = mView.getWidth();
-        mSnapshotHeight = mView.getHeight();
-    }
-}