mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
712 lines
25 KiB
Java
712 lines
25 KiB
Java
/* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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package org.mozilla.gecko;
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import org.mozilla.gecko.db.BrowserDB;
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import org.mozilla.gecko.sync.setup.SyncAccounts;
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import org.mozilla.gecko.util.GeckoEventListener;
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import org.mozilla.gecko.util.ThreadUtils;
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import org.json.JSONObject;
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import android.accounts.Account;
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import android.accounts.AccountManager;
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import android.accounts.OnAccountsUpdateListener;
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import android.content.ContentResolver;
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import android.database.ContentObserver;
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import android.graphics.Color;
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import android.net.Uri;
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import android.util.Log;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.Iterator;
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import java.util.List;
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import java.util.concurrent.CopyOnWriteArrayList;
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import java.util.concurrent.atomic.AtomicInteger;
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public class Tabs implements GeckoEventListener {
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private static final String LOGTAG = "GeckoTabs";
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// mOrder and mTabs are always of the same cardinality, and contain the same values.
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private final CopyOnWriteArrayList<Tab> mOrder = new CopyOnWriteArrayList<Tab>();
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// All writes to mSelectedTab must be synchronized on the Tabs instance.
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// In general, it's preferred to always use selectTab()).
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private volatile Tab mSelectedTab;
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// All accesses to mTabs must be synchronized on the Tabs instance.
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private final HashMap<Integer, Tab> mTabs = new HashMap<Integer, Tab>();
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// Keeps track of how much has happened since we last updated our persistent tab store.
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private volatile int mScore = 0;
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private AccountManager mAccountManager;
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private OnAccountsUpdateListener mAccountListener = null;
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public static final int LOADURL_NONE = 0;
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public static final int LOADURL_NEW_TAB = 1;
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public static final int LOADURL_USER_ENTERED = 2;
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public static final int LOADURL_PRIVATE = 4;
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public static final int LOADURL_PINNED = 8;
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public static final int LOADURL_DELAY_LOAD = 16;
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public static final int LOADURL_DESKTOP = 32;
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public static final int LOADURL_BACKGROUND = 64;
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private static final int SCORE_INCREMENT_TAB_LOCATION_CHANGE = 5;
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private static final int SCORE_INCREMENT_TAB_SELECTED = 10;
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private static final int SCORE_THRESHOLD = 30;
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private static AtomicInteger sTabId = new AtomicInteger(0);
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private volatile boolean mInitialTabsAdded;
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private GeckoApp mActivity;
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private ContentObserver mContentObserver;
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private Tabs() {
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registerEventListener("Session:RestoreEnd");
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registerEventListener("SessionHistory:New");
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registerEventListener("SessionHistory:Back");
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registerEventListener("SessionHistory:Forward");
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registerEventListener("SessionHistory:Goto");
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registerEventListener("SessionHistory:Purge");
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registerEventListener("Tab:Added");
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registerEventListener("Tab:Close");
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registerEventListener("Tab:Select");
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registerEventListener("Content:LocationChange");
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registerEventListener("Content:SecurityChange");
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registerEventListener("Content:ReaderEnabled");
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registerEventListener("Content:StateChange");
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registerEventListener("Content:LoadError");
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registerEventListener("Content:PageShow");
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registerEventListener("DOMContentLoaded");
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registerEventListener("DOMTitleChanged");
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registerEventListener("Link:Favicon");
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registerEventListener("Link:Feed");
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registerEventListener("DesktopMode:Changed");
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}
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public synchronized void attachToActivity(GeckoApp activity) {
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if (mActivity == activity) {
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return;
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}
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if (mActivity != null) {
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detachFromActivity(mActivity);
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}
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mActivity = activity;
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mAccountManager = AccountManager.get(mActivity);
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mAccountListener = new OnAccountsUpdateListener() {
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@Override
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public void onAccountsUpdated(Account[] accounts) {
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persistAllTabs();
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}
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};
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// The listener will run on the background thread (see 2nd argument).
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mAccountManager.addOnAccountsUpdatedListener(mAccountListener, ThreadUtils.getBackgroundHandler(), false);
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if (mContentObserver != null) {
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BrowserDB.registerBookmarkObserver(getContentResolver(), mContentObserver);
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}
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}
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// Ideally, this would remove the reference to the activity once it's
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// detached; however, we have lifecycle issues with GeckoApp and Tabs that
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// requires us to keep it around (see
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// https://bugzilla.mozilla.org/show_bug.cgi?id=844407).
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public synchronized void detachFromActivity(GeckoApp activity) {
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if (mContentObserver != null) {
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BrowserDB.unregisterContentObserver(getContentResolver(), mContentObserver);
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}
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if (mAccountListener != null) {
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mAccountManager.removeOnAccountsUpdatedListener(mAccountListener);
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mAccountListener = null;
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}
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}
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/**
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* Gets the tab count corresponding to the private state of the selected
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* tab.
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*
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* If the selected tab is a non-private tab, this will return the number of
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* non-private tabs; likewise, if this is a private tab, this will return
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* the number of private tabs.
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*
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* @return the number of tabs in the current private state
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*/
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public synchronized int getDisplayCount() {
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// Once mSelectedTab is non-null, it cannot be null for the remainder
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// of the object's lifetime.
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boolean getPrivate = mSelectedTab != null && mSelectedTab.isPrivate();
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int count = 0;
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for (Tab tab : mOrder) {
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if (tab.isPrivate() == getPrivate) {
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count++;
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}
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}
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return count;
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}
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public synchronized int isOpen(String url) {
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for (Tab tab : mOrder) {
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if (tab.getURL().equals(url)) {
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return tab.getId();
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}
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}
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return -1;
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}
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// Must be synchronized to avoid racing on mContentObserver.
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private void lazyRegisterBookmarkObserver() {
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if (mContentObserver == null) {
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mContentObserver = new ContentObserver(null) {
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@Override
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public void onChange(boolean selfChange) {
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for (Tab tab : mOrder) {
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tab.updateBookmark();
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}
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}
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};
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BrowserDB.registerBookmarkObserver(getContentResolver(), mContentObserver);
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}
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}
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private Tab addTab(int id, String url, boolean external, int parentId, String title, boolean isPrivate) {
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final Tab tab = isPrivate ? new PrivateTab(mActivity, id, url, external, parentId, title) :
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new Tab(mActivity, id, url, external, parentId, title);
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synchronized (this) {
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lazyRegisterBookmarkObserver();
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mTabs.put(id, tab);
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mOrder.add(tab);
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}
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// Suppress the ADDED event to prevent animation of tabs created via session restore.
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if (mInitialTabsAdded) {
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notifyListeners(tab, TabEvents.ADDED);
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}
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return tab;
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}
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public synchronized void removeTab(int id) {
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if (mTabs.containsKey(id)) {
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Tab tab = getTab(id);
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mOrder.remove(tab);
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mTabs.remove(id);
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}
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}
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public synchronized Tab selectTab(int id) {
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if (!mTabs.containsKey(id))
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return null;
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final Tab oldTab = getSelectedTab();
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final Tab tab = mTabs.get(id);
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// This avoids a NPE below, but callers need to be careful to
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// handle this case.
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if (tab == null || oldTab == tab) {
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return null;
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}
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mSelectedTab = tab;
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notifyListeners(tab, TabEvents.SELECTED);
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if (oldTab != null) {
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notifyListeners(oldTab, TabEvents.UNSELECTED);
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}
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// Pass a message to Gecko to update tab state in BrowserApp.
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GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Tab:Selected", String.valueOf(tab.getId())));
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return tab;
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}
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private int getIndexOf(Tab tab) {
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return mOrder.lastIndexOf(tab);
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}
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private Tab getNextTabFrom(Tab tab, boolean getPrivate) {
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int numTabs = mOrder.size();
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int index = getIndexOf(tab);
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for (int i = index + 1; i < numTabs; i++) {
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Tab next = mOrder.get(i);
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if (next.isPrivate() == getPrivate) {
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return next;
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}
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}
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return null;
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}
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private Tab getPreviousTabFrom(Tab tab, boolean getPrivate) {
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int numTabs = mOrder.size();
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int index = getIndexOf(tab);
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for (int i = index - 1; i >= 0; i--) {
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Tab prev = mOrder.get(i);
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if (prev.isPrivate() == getPrivate) {
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return prev;
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}
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}
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return null;
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}
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/**
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* Gets the selected tab.
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*
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* The selected tab can be null if we're doing a session restore after a
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* crash and Gecko isn't ready yet.
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*
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* @return the selected tab, or null if no tabs exist
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*/
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public Tab getSelectedTab() {
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return mSelectedTab;
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}
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public boolean isSelectedTab(Tab tab) {
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return tab != null && tab == mSelectedTab;
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}
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public synchronized Tab getTab(int id) {
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if (mTabs.size() == 0)
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return null;
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if (!mTabs.containsKey(id))
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return null;
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return mTabs.get(id);
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}
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/** Close tab and then select the default next tab */
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public synchronized void closeTab(Tab tab) {
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closeTab(tab, getNextTab(tab));
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}
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/** Close tab and then select nextTab */
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public synchronized void closeTab(final Tab tab, Tab nextTab) {
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if (tab == null)
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return;
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int tabId = tab.getId();
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removeTab(tabId);
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if (nextTab == null)
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nextTab = loadUrl("about:home", LOADURL_NEW_TAB);
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selectTab(nextTab.getId());
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tab.onDestroy();
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// Pass a message to Gecko to update tab state in BrowserApp
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GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Tab:Closed", String.valueOf(tabId)));
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}
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/** Return the tab that will be selected by default after this one is closed */
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public Tab getNextTab(Tab tab) {
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Tab selectedTab = getSelectedTab();
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if (selectedTab != tab)
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return selectedTab;
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boolean getPrivate = tab.isPrivate();
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Tab nextTab = getNextTabFrom(tab, getPrivate);
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if (nextTab == null)
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nextTab = getPreviousTabFrom(tab, getPrivate);
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if (nextTab == null && getPrivate) {
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// If there are no private tabs remaining, get the last normal tab
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Tab lastTab = mOrder.get(mOrder.size() - 1);
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if (!lastTab.isPrivate()) {
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nextTab = lastTab;
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} else {
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nextTab = getPreviousTabFrom(lastTab, false);
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}
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}
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Tab parent = getTab(tab.getParentId());
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if (parent != null) {
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// If the next tab is a sibling, switch to it. Otherwise go back to the parent.
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if (nextTab != null && nextTab.getParentId() == tab.getParentId())
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return nextTab;
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else
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return parent;
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}
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return nextTab;
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}
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public Iterable<Tab> getTabsInOrder() {
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return mOrder;
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}
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/**
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* @return the current GeckoApp instance, or throws if
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* we aren't correctly initialized.
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*/
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private synchronized GeckoApp getActivity() {
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if (mActivity == null) {
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throw new IllegalStateException("Tabs not initialized with a GeckoApp instance.");
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}
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return mActivity;
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}
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public ContentResolver getContentResolver() {
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return getActivity().getContentResolver();
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}
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// Make Tabs a singleton class.
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private static class TabsInstanceHolder {
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private static final Tabs INSTANCE = new Tabs();
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}
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public static Tabs getInstance() {
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return Tabs.TabsInstanceHolder.INSTANCE;
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}
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// GeckoEventListener implementation
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@Override
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public void handleMessage(String event, JSONObject message) {
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try {
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if (event.equals("Session:RestoreEnd")) {
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notifyListeners(null, TabEvents.RESTORED);
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return;
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}
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// All other events handled below should contain a tabID property
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int id = message.getInt("tabID");
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Tab tab = getTab(id);
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// "Tab:Added" is a special case because tab will be null if the tab was just added
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if (event.equals("Tab:Added")) {
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String url = message.isNull("uri") ? null : message.getString("uri");
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if (message.getBoolean("stub")) {
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if (tab == null) {
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// Tab was already closed; abort
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return;
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}
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tab.updateURL(url);
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} else {
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tab = addTab(id, url, message.getBoolean("external"),
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message.getInt("parentId"),
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message.getString("title"),
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message.getBoolean("isPrivate"));
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}
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if (message.getBoolean("selected"))
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selectTab(id);
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if (message.getBoolean("delayLoad"))
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tab.setState(Tab.STATE_DELAYED);
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if (message.getBoolean("desktopMode"))
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tab.setDesktopMode(true);
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return;
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}
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// Tab was already closed; abort
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if (tab == null)
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return;
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if (event.startsWith("SessionHistory:")) {
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event = event.substring("SessionHistory:".length());
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tab.handleSessionHistoryMessage(event, message);
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} else if (event.equals("Tab:Close")) {
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closeTab(tab);
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} else if (event.equals("Tab:Select")) {
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selectTab(tab.getId());
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} else if (event.equals("Content:LocationChange")) {
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tab.handleLocationChange(message);
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} else if (event.equals("Content:SecurityChange")) {
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tab.updateIdentityData(message.getJSONObject("identity"));
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notifyListeners(tab, TabEvents.SECURITY_CHANGE);
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} else if (event.equals("Content:ReaderEnabled")) {
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tab.setReaderEnabled(true);
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notifyListeners(tab, TabEvents.READER_ENABLED);
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} else if (event.equals("Content:StateChange")) {
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int state = message.getInt("state");
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if ((state & GeckoAppShell.WPL_STATE_IS_NETWORK) != 0) {
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if ((state & GeckoAppShell.WPL_STATE_START) != 0) {
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boolean showProgress = message.getBoolean("showProgress");
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tab.handleDocumentStart(showProgress, message.getString("uri"));
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notifyListeners(tab, Tabs.TabEvents.START, showProgress);
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} else if ((state & GeckoAppShell.WPL_STATE_STOP) != 0) {
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tab.handleDocumentStop(message.getBoolean("success"));
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notifyListeners(tab, Tabs.TabEvents.STOP);
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}
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}
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} else if (event.equals("Content:LoadError")) {
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notifyListeners(tab, Tabs.TabEvents.LOAD_ERROR);
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} else if (event.equals("Content:PageShow")) {
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notifyListeners(tab, TabEvents.PAGE_SHOW);
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} else if (event.equals("DOMContentLoaded")) {
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String backgroundColor = message.getString("bgColor");
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if (backgroundColor != null) {
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tab.setBackgroundColor(backgroundColor);
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} else {
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// Default to white if no color is given
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tab.setBackgroundColor(Color.WHITE);
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}
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notifyListeners(tab, Tabs.TabEvents.LOADED);
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} else if (event.equals("DOMTitleChanged")) {
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tab.updateTitle(message.getString("title"));
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} else if (event.equals("Link:Favicon")) {
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tab.updateFaviconURL(message.getString("href"), message.getInt("size"));
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notifyListeners(tab, TabEvents.LINK_FAVICON);
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} else if (event.equals("Link:Feed")) {
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tab.setFeedsEnabled(true);
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notifyListeners(tab, TabEvents.LINK_FEED);
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} else if (event.equals("DesktopMode:Changed")) {
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tab.setDesktopMode(message.getBoolean("desktopMode"));
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notifyListeners(tab, TabEvents.DESKTOP_MODE_CHANGE);
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}
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} catch (Exception e) {
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Log.w(LOGTAG, "handleMessage threw for " + event, e);
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}
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}
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public void refreshThumbnails() {
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final ThumbnailHelper helper = ThumbnailHelper.getInstance();
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ThreadUtils.postToBackgroundThread(new Runnable() {
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@Override
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public void run() {
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for (final Tab tab : mOrder) {
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helper.getAndProcessThumbnailFor(tab);
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}
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}
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});
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}
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public interface OnTabsChangedListener {
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public void onTabChanged(Tab tab, TabEvents msg, Object data);
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}
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private static List<OnTabsChangedListener> mTabsChangedListeners =
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Collections.synchronizedList(new ArrayList<OnTabsChangedListener>());
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public static void registerOnTabsChangedListener(OnTabsChangedListener listener) {
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mTabsChangedListeners.add(listener);
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}
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public static void unregisterOnTabsChangedListener(OnTabsChangedListener listener) {
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mTabsChangedListeners.remove(listener);
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}
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public enum TabEvents {
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CLOSED,
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START,
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LOADED,
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LOAD_ERROR,
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STOP,
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FAVICON,
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THUMBNAIL,
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TITLE,
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SELECTED,
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UNSELECTED,
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ADDED,
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RESTORED,
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LOCATION_CHANGE,
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MENU_UPDATED,
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PAGE_SHOW,
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LINK_FAVICON,
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LINK_FEED,
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SECURITY_CHANGE,
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READER_ENABLED,
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DESKTOP_MODE_CHANGE
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}
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public void notifyListeners(Tab tab, TabEvents msg) {
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notifyListeners(tab, msg, "");
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}
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// Throws if not initialized.
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public void notifyListeners(final Tab tab, final TabEvents msg, final Object data) {
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getActivity().runOnUiThread(new Runnable() {
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@Override
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public void run() {
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onTabChanged(tab, msg, data);
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synchronized (mTabsChangedListeners) {
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if (mTabsChangedListeners.isEmpty()) {
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return;
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}
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Iterator<OnTabsChangedListener> items = mTabsChangedListeners.iterator();
|
|
while (items.hasNext()) {
|
|
items.next().onTabChanged(tab, msg, data);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
private void onTabChanged(Tab tab, Tabs.TabEvents msg, Object data) {
|
|
switch (msg) {
|
|
case LOCATION_CHANGE:
|
|
mScore += SCORE_INCREMENT_TAB_LOCATION_CHANGE;
|
|
break;
|
|
case RESTORED:
|
|
mInitialTabsAdded = true;
|
|
break;
|
|
|
|
// When one tab is deselected, another one is always selected, so only
|
|
// increment the score once. When tabs are added/closed, they are also
|
|
// selected/unselected, so it would be redundant to also listen
|
|
// for ADDED/CLOSED events.
|
|
case SELECTED:
|
|
mScore += SCORE_INCREMENT_TAB_SELECTED;
|
|
case UNSELECTED:
|
|
tab.onChange();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (mScore > SCORE_THRESHOLD) {
|
|
persistAllTabs();
|
|
mScore = 0;
|
|
}
|
|
}
|
|
|
|
// This method persists the current ordered list of tabs in our tabs content provider.
|
|
public void persistAllTabs() {
|
|
final GeckoApp activity = getActivity();
|
|
final Iterable<Tab> tabs = getTabsInOrder();
|
|
ThreadUtils.postToBackgroundThread(new Runnable() {
|
|
@Override
|
|
public void run() {
|
|
boolean syncIsSetup = SyncAccounts.syncAccountsExist(activity);
|
|
if (syncIsSetup) {
|
|
TabsAccessor.persistLocalTabs(getContentResolver(), tabs);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
private void registerEventListener(String event) {
|
|
GeckoAppShell.getEventDispatcher().registerEventListener(event, this);
|
|
}
|
|
|
|
/**
|
|
* Loads a tab with the given URL in the currently selected tab.
|
|
*
|
|
* @param url URL of page to load, or search term used if searchEngine is given
|
|
*/
|
|
public void loadUrl(String url) {
|
|
loadUrl(url, LOADURL_NONE);
|
|
}
|
|
|
|
/**
|
|
* Loads a tab with the given URL.
|
|
*
|
|
* @param url URL of page to load, or search term used if searchEngine is given
|
|
* @param flags flags used to load tab
|
|
*
|
|
* @return the Tab if a new one was created; null otherwise
|
|
*/
|
|
public Tab loadUrl(String url, int flags) {
|
|
return loadUrl(url, null, -1, flags);
|
|
}
|
|
|
|
/**
|
|
* Loads a tab with the given URL.
|
|
*
|
|
* @param url URL of page to load, or search term used if searchEngine is given
|
|
* @param searchEngine if given, the search engine with this name is used
|
|
* to search for the url string; if null, the URL is loaded directly
|
|
* @param parentId ID of this tab's parent, or -1 if it has no parent
|
|
* @param flags flags used to load tab
|
|
*
|
|
* @return the Tab if a new one was created; null otherwise
|
|
*/
|
|
public Tab loadUrl(String url, String searchEngine, int parentId, int flags) {
|
|
JSONObject args = new JSONObject();
|
|
Tab added = null;
|
|
boolean delayLoad = (flags & LOADURL_DELAY_LOAD) != 0;
|
|
|
|
// delayLoad implies background tab
|
|
boolean background = delayLoad || (flags & LOADURL_BACKGROUND) != 0;
|
|
|
|
try {
|
|
boolean isPrivate = (flags & LOADURL_PRIVATE) != 0;
|
|
boolean userEntered = (flags & LOADURL_USER_ENTERED) != 0;
|
|
boolean desktopMode = (flags & LOADURL_DESKTOP) != 0;
|
|
|
|
args.put("url", url);
|
|
args.put("engine", searchEngine);
|
|
args.put("parentId", parentId);
|
|
args.put("userEntered", userEntered);
|
|
args.put("newTab", (flags & LOADURL_NEW_TAB) != 0);
|
|
args.put("isPrivate", isPrivate);
|
|
args.put("pinned", (flags & LOADURL_PINNED) != 0);
|
|
args.put("delayLoad", delayLoad);
|
|
args.put("desktopMode", desktopMode);
|
|
args.put("selected", !background);
|
|
|
|
if ((flags & LOADURL_NEW_TAB) != 0) {
|
|
int tabId = getNextTabId();
|
|
args.put("tabID", tabId);
|
|
|
|
// The URL is updated for the tab once Gecko responds with the
|
|
// Tab:Added message. We can preliminarily set the tab's URL as
|
|
// long as it's a valid URI.
|
|
String tabUrl = (url != null && Uri.parse(url).getScheme() != null) ? url : null;
|
|
|
|
added = addTab(tabId, tabUrl, false, parentId, url, isPrivate);
|
|
added.setDesktopMode(desktopMode);
|
|
}
|
|
} catch (Exception e) {
|
|
Log.w(LOGTAG, "Error building JSON arguments for loadUrl.", e);
|
|
}
|
|
|
|
GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Tab:Load", args.toString()));
|
|
|
|
if ((added != null) && !delayLoad && !background) {
|
|
selectTab(added.getId());
|
|
}
|
|
|
|
return added;
|
|
}
|
|
|
|
/**
|
|
* Open the url as a new tab, and mark the selected tab as its "parent".
|
|
*
|
|
* If the url is already open in a tab, the existing tab is selected.
|
|
* Use this for tabs opened by the browser chrome, so users can press the
|
|
* "Back" button to return to the previous tab.
|
|
*
|
|
* @param url URL of page to load
|
|
*/
|
|
public void loadUrlInTab(String url) {
|
|
Iterable<Tab> tabs = getTabsInOrder();
|
|
for (Tab tab : tabs) {
|
|
if (url.equals(tab.getURL())) {
|
|
selectTab(tab.getId());
|
|
return;
|
|
}
|
|
}
|
|
|
|
// getSelectedTab() can return null if no tab has been created yet
|
|
// (i.e., we're restoring a session after a crash). In these cases,
|
|
// don't mark any tabs as a parent.
|
|
int parentId = -1;
|
|
Tab selectedTab = getSelectedTab();
|
|
if (selectedTab != null) {
|
|
parentId = selectedTab.getId();
|
|
}
|
|
|
|
loadUrl(url, null, parentId, LOADURL_NEW_TAB);
|
|
}
|
|
|
|
/**
|
|
* Gets the next tab ID.
|
|
*
|
|
* This method is invoked via JNI.
|
|
*/
|
|
public static int getNextTabId() {
|
|
return sTabId.getAndIncrement();
|
|
}
|
|
}
|