import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
/**
 * Create an RecentTabsManager to be used with RecentTabsPage and RecentTabsRowAdapter.
 *
 * @param tab The Tab that is showing this recent tabs page.
 * @param profile Profile that is associated with the current session.
 * @param context the Android context this manager will work in.
 */
public RecentTabsManager(Tab tab, Profile profile, Context context) {
    mProfile = profile;
    mTab = tab;
    mForeignSessionHelper = buildForeignSessionHelper(mProfile);
    mNewTabPagePrefs = buildNewTabPagePrefs(mProfile);
    mFaviconHelper = buildFaviconHelper();
    mRecentlyClosedBridge = buildRecentlyClosedBridge(mProfile);
    mSignInManager = SigninManager.get(context);
    mContext = context;

    updateRecentlyClosedTabs();
    registerForForeignSessionUpdates();
    updateForeignSessions();
    mForeignSessionHelper.triggerSessionSync();
    registerForSignInAndSyncNotifications();

    InvalidationController.get(mContext).onRecentTabsPageOpened();
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
/**
 * Should be called when this object is no longer needed. Performs necessary listener tear down.
 */
public void destroy() {
    mIsDestroyed = true;
    AndroidSyncSettings.unregisterObserver(mContext, this);

    mSignInManager.removeSignInStateObserver(this);
    mSignInManager = null;

    mFaviconHelper.destroy();
    mFaviconHelper = null;

    mRecentlyClosedBridge.destroy();
    mRecentlyClosedBridge = null;

    mForeignSessionHelper.destroy();
    mForeignSessionHelper = null;

    mUpdatedCallback = null;

    mNewTabPagePrefs.destroy();
    mNewTabPagePrefs = null;

    InvalidationController.get(mContext).onRecentTabsPageClosed();
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
/**
 * Should be called when this object is no longer needed. Performs necessary listener tear down.
 */
public void destroy() {
    mIsDestroyed = true;
    AndroidSyncSettings.unregisterObserver(mContext, this);

    mSignInManager.removeSignInStateObserver(this);
    mSignInManager = null;

    mFaviconHelper.destroy();
    mFaviconHelper = null;

    mRecentlyClosedTabManager.destroy();
    mRecentlyClosedTabManager = null;

    mForeignSessionHelper.destroy();
    mForeignSessionHelper = null;

    mUpdatedCallback = null;

    mPrefs.destroy();
    mPrefs = null;

    InvalidationController.get(mContext).onRecentTabsPageClosed();
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
private void configureSyncDataTypes() {
    if (maybeDisableSync()) return;

    boolean syncEverything = mSyncEverything.isChecked();
    mProfileSyncService.setPreferredDataTypes(syncEverything, getSelectedModelTypes());
    // Update the invalidation listener with the set of types we are enabling.
    InvalidationController invController = InvalidationController.get(getActivity());
    invController.ensureStartedAndUpdateRegisteredTypes();
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
/**
 * Should be called when this object is no longer needed. Performs necessary listener tear down.
 */
public void destroy() {
    AndroidSyncSettings.unregisterObserver(mContext, this);

    mSignInManager.removeSignInStateObserver(this);
    mSignInManager = null;

    mFaviconHelper.destroy();
    mFaviconHelper = null;

    mRecentlyClosedBridge.destroy();
    mRecentlyClosedBridge = null;

    mForeignSessionHelper.destroy();
    mForeignSessionHelper = null;

    mUpdatedCallback = null;

    mNewTabPagePrefs.destroy();
    mNewTabPagePrefs = null;

    if (mProfileDataCache != null) {
        mProfileDataCache.destroy();
        mProfileDataCache = null;
    }

    InvalidationController.get(mContext).onRecentTabsPageClosed();
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
/**
 * Starts sync if the master sync flag is enabled.
 *
 * Affects native sync, the invalidation controller, and the Android sync settings.
 */
public void start() {
    ThreadUtils.assertOnUiThread();
    if (AndroidSyncSettings.isMasterSyncEnabled(mContext)) {
        Log.d(TAG, "Enabling sync");
        InvalidationController.get(mContext).ensureStartedAndUpdateRegisteredTypes();
        mProfileSyncService.requestStart();
        AndroidSyncSettings.enableChromeSync(mContext);
    }
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
/**
 * Stops Sync if a user is currently signed in.
 *
 * Affects native sync, the invalidation controller, and the Android sync settings.
 */
public void stop() {
    ThreadUtils.assertOnUiThread();
    Log.d(TAG, "Disabling sync");
    InvalidationController.get(mContext).stop();
    mProfileSyncService.requestStop();
    if (AndroidSyncSettings.isMasterSyncEnabled(mContext)) {
        // Only disable Android's Chrome sync setting if we weren't disabled
        // by the master sync setting. This way, when master sync is enabled
        // they will both be on and sync will start again.
        AndroidSyncSettings.disableChromeSync(mContext);
    }
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
private void configureSyncDataTypes() {
    if (maybeDisableSync()) return;

    boolean syncEverything = mSyncEverything.isChecked();
    mProfileSyncService.setPreferredDataTypes(syncEverything, getSelectedModelTypes());
    // Update the invalidation listener with the set of types we are enabling.
    InvalidationController invController =
            InvalidationController.get(getActivity());
    invController.ensureStartedAndUpdateRegisteredTypes();
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
/**
 * Create an RecentTabsManager to be used with RecentTabsPage and RecentTabsRowAdapter.
 *
 * @param tab The Tab that is showing this recent tabs page.
 * @param profile Profile that is associated with the current session.
 * @param context the Android context this manager will work in.
 */
public RecentTabsManager(Tab tab, Profile profile, Context context) {
    mProfile = profile;
    mTab = tab;
    mForeignSessionHelper = new ForeignSessionHelper(profile);
    mPrefs = new RecentTabsPagePrefs(profile);
    mFaviconHelper = new FaviconHelper();
    mRecentlyClosedTabManager = sRecentlyClosedTabManagerForTests != null
            ? sRecentlyClosedTabManagerForTests
            : new RecentlyClosedBridge(profile);
    mSignInManager = SigninManager.get(context);
    mContext = context;

    mRecentlyClosedTabManager.setTabsUpdatedRunnable(new Runnable() {
        @Override
        public void run() {
            updateRecentlyClosedTabs();
            postUpdate();
        }
    });

    updateRecentlyClosedTabs();
    registerForForeignSessionUpdates();
    updateForeignSessions();
    mForeignSessionHelper.triggerSessionSync();
    registerForSignInAndSyncNotifications();

    InvalidationController.get(mContext).onRecentTabsPageOpened();
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
private void start() {
    ThreadUtils.assertOnUiThread();
    if (mSyncStatusHelper.isMasterSyncAutomaticallyEnabled()) {
        Log.d(TAG, "Enabling sync");
        Account account = mChromeSigninController.getSignedInUser();
        InvalidationController.get(mContext).start();
        mProfileSyncService.enableSync();
        mSyncStatusHelper.enableAndroidSync(account);
    }
}
 

import org.chromium.chrome.browser.invalidation.InvalidationController; //导入依赖的package包/类
private void stop() {
    ThreadUtils.assertOnUiThread();
    if (mChromeSigninController.isSignedIn()) {
        Log.d(TAG, "Disabling sync");
        Account account = mChromeSigninController.getSignedInUser();
        InvalidationController.get(mContext).stop();
        mProfileSyncService.disableSync();
        mSyncStatusHelper.disableAndroidSync(account);
    }
}