[Hera] Excise a bunch of document mode code

chrome/android/java/src/org/chromium/chrome/browser/ntp/DocumentRecentTabsManager.java

-// 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.annotation.TargetApi;
-import android.app.Activity;
-import android.app.ActivityManager;
-import android.app.ActivityManager.RecentTaskInfo;
-import android.app.Dialog;
-import android.content.Intent;
-import android.os.Build;
-import android.text.TextUtils;
-
-import org.chromium.base.ThreadUtils;
-import org.chromium.chrome.browser.ChromeApplication;
-import org.chromium.chrome.browser.UrlConstants;
-import org.chromium.chrome.browser.document.DocumentUtils;
-import org.chromium.chrome.browser.ntp.ForeignSessionHelper.ForeignSession;
-import org.chromium.chrome.browser.ntp.ForeignSessionHelper.ForeignSessionTab;
-import org.chromium.chrome.browser.ntp.RecentlyClosedBridge.RecentlyClosedTab;
-import org.chromium.chrome.browser.tab.Tab;
-import org.chromium.chrome.browser.tabmodel.EmptyTabModelObserver;
-import org.chromium.chrome.browser.tabmodel.TabModel.TabLaunchType;
-import org.chromium.chrome.browser.tabmodel.TabModelObserver;
-import org.chromium.chrome.browser.tabmodel.TabModelUtils;
-import org.chromium.chrome.browser.tabmodel.document.ActivityDelegate;
-import org.chromium.chrome.browser.tabmodel.document.DocumentTabModel;
-import org.chromium.chrome.browser.tabmodel.document.DocumentTabModelImpl;
-import org.chromium.ui.WindowOpenDisposition;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * ChromeHome specific version of RecentTabsManager that allows opening new DocumentActivities
- * instead of tabs.
- */
-@TargetApi(Build.VERSION_CODES.LOLLIPOP)
-public class DocumentRecentTabsManager extends RecentTabsManager {
-    /**
-     * The number of ms to delay opening a new tab, so that we have time to hide dialog before
-     * the screenshot of the current page is taken.
-     */
-    private static final int NEW_TAB_DELAY_MS = 150;
-    private final Activity mActivity;
-    private final List<CurrentlyOpenTab> mCurrentlyOpenTabs;
-    private final DocumentTabModel mTabModel;
-    private final DocumentTabModel.InitializationObserver mUpdateOpenTabsObserver;
-    private TabModelObserver mTabModelObserver;
-    private Dialog mDialog;
-
-    private boolean mShowingAllInCurrentTabs;
-
-    /**
-     * @param activity Activity that should be used to launch intents.
-     */
-    public DocumentRecentTabsManager(Tab tab, Activity activity) {
-        super(tab, tab.getProfile().getOriginalProfile(), activity);
-        mActivity = activity;
-        mCurrentlyOpenTabs = new ArrayList<CurrentlyOpenTab>();
-        mTabModel =
-                ChromeApplication.getDocumentTabModelSelector().getModel(tab.isIncognito());
-        mUpdateOpenTabsObserver = new DocumentTabModel.InitializationObserver(mTabModel) {
-                @Override
-                public boolean isSatisfied(int currentState) {
-                    return currentState >= DocumentTabModelImpl.STATE_FULLY_LOADED;
-                }
-
-                @Override
-                public boolean isCanceled() {
-                    return mActivity.isDestroyed() || mActivity.isFinishing();
-                }
-
-                @Override
-                protected void runImmediately() {
-                    updateCurrentlyOpenTabsWhenDatabaseReady();
-                }
-        };
-        mTabModelObserver = new EmptyTabModelObserver() {
-            @Override
-            public void didAddTab(Tab tab, TabLaunchType type) {
-                updateCurrentlyOpenTabsWhenDatabaseReady();
-            }
-
-            @Override
-            public void didCloseTab(int tabId, boolean incognito) {
-                updateCurrentlyOpenTabsWhenDatabaseReady();
-            }
-        };
-        mTabModel.addObserver(mTabModelObserver);
-        updateCurrentlyOpenTabs();
-    }
-
-    /**
-     * @param dialog Dialog that displays the RecentTabsPage and will be dismissed when
-     *               a link is opened.
-     */
-    public void setDialog(Dialog dialog) {
-        mDialog = dialog;
-    }
-
-    @Override
-    public void destroy() {
-        super.destroy();
-        mTabModel.removeObserver(mTabModelObserver);
-    }
-
-    @Override
-    public void openForeignSessionTab(final ForeignSession session, final ForeignSessionTab tab,
-            int windowDisposition) {
-        // Hide the dialog for screenshot. We don't want to dismiss yet because that will destroy
-        // the NativePage objects we need in the delayed runnable.
-        if (mDialog != null) mDialog.hide();
-        ThreadUtils.postOnUiThreadDelayed(new Runnable() {
-            @Override
-            public void run() {
-                if (isDestroyed()) return;
-                DocumentRecentTabsManager.super.openForeignSessionTab(
-                        session, tab, WindowOpenDisposition.NEW_FOREGROUND_TAB);
-                if (mDialog != null) mDialog.dismiss();
-            }
-        }, NEW_TAB_DELAY_MS);
-    }
-
-    @Override
-    public void openRecentlyClosedTab(final RecentlyClosedTab tab, int windowDisposition) {
-        // Hide the dialog for screenshot. We don't want to dismiss yet because that will destroy
-        // the NativePage objects we need in the delayed runnable.
-        if (mDialog != null) mDialog.hide();
-        ThreadUtils.postOnUiThreadDelayed(new Runnable() {
-            @Override
-            public void run() {
-                if (isDestroyed()) return;
-                DocumentRecentTabsManager.super.openRecentlyClosedTab(
-                        tab, WindowOpenDisposition.NEW_FOREGROUND_TAB);
-                if (mDialog != null) mDialog.dismiss();
-            }
-        }, NEW_TAB_DELAY_MS);
-    }
-
-    @Override
-    public void openHistoryPage() {
-        super.openHistoryPage();
-        if (mDialog != null) mDialog.dismiss();
-    }
-
-    @Override
-    public List<CurrentlyOpenTab> getCurrentlyOpenTabs() {
-        return mCurrentlyOpenTabs;
-    }
-
-    @Override
-    public void setCurrentlyOpenTabsShowAll(boolean showingAll) {
-        mShowingAllInCurrentTabs = showingAll;
-        postUpdate();
-    }
-
-    @Override
-    public boolean isCurrentlyOpenTabsShowingAll() {
-        return mShowingAllInCurrentTabs;
-    }
-
-    @Override
-    public void closeTab(CurrentlyOpenTab tab) {
-        Tab currentTab =
-                ChromeApplication.getDocumentTabModelSelector().getCurrentTab();
-        Tab tabOject = TabModelUtils.getTabById(mTabModel, tab.getTabId());
-        mTabModel.closeTab(tabOject);
-        if (currentTab.getId() == tabOject.getId()) {
-            Intent intent = new Intent();
-            intent.setAction(Intent.ACTION_MAIN);
-            intent.setPackage(mActivity.getPackageName());
-            mActivity.startActivity(intent);
-        }
-        postUpdate();
-    }
-
-    @Override
-    protected void updateCurrentlyOpenTabs() {
-        mUpdateOpenTabsObserver.runWhenReady();
-    }
-
-    private void updateCurrentlyOpenTabsWhenDatabaseReady() {
-        final int currentTabId = ActivityDelegate.getTabIdFromIntent(mActivity.getIntent());
-
-        ActivityManager am = (ActivityManager) mActivity.getSystemService(
-                Activity.ACTIVITY_SERVICE);
-        List<ActivityManager.AppTask> taskList = am.getAppTasks();
-        mCurrentlyOpenTabs.clear();
-        for (int i = 0; i < taskList.size(); i++) {
-            RecentTaskInfo taskInfo = DocumentUtils.getTaskInfoFromTask(taskList.get(i));
-            if (taskInfo == null) continue;
-
-            final Intent baseIntent = taskInfo.baseIntent;
-            final int tabId = ActivityDelegate.getTabIdFromIntent(baseIntent);
-            String url = mTabModel.getCurrentUrlForDocument(tabId);
-            if (TextUtils.isEmpty(url) || url.startsWith(UrlConstants.CHROME_NATIVE_SCHEME)) {
-                continue;
-            }
-
-            CharSequence description = taskInfo.description;
-            String title = description != null ?  description.toString() : "";
-
-            final Runnable startNewDocument = new Runnable() {
-                @Override
-                public void run() {
-                    Intent newIntent = Tab.createBringTabToFrontIntent(tabId);
-                    newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_DOCUMENT);
-                    mActivity.startActivity(newIntent);
-                }
-            };
-
-            Runnable onClickRunnable = new Runnable() {
-                @Override
-                public void run() {
-                    if (mDialog != null) mDialog.dismiss();
-                    if (currentTabId != tabId) {
-                        ThreadUtils.postOnUiThreadDelayed(startNewDocument, NEW_TAB_DELAY_MS);
-                    }
-                }
-            };
-            mCurrentlyOpenTabs.add(new CurrentlyOpenTab(tabId, url, title, onClickRunnable));
-        }
-    }
-}