mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
536 lines
18 KiB
Java
536 lines
18 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.util.GeckoEventListener;
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import org.json.JSONException;
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import org.json.JSONObject;
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import android.content.ContentResolver;
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import android.content.Intent;
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import android.net.Uri;
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import android.os.SystemClock;
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import android.util.Log;
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import android.widget.Toast;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.Iterator;
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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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private Tab mSelectedTab;
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private final HashMap<Integer, Tab> mTabs = new HashMap<Integer, Tab>();
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private final CopyOnWriteArrayList<Tab> mOrder = new CopyOnWriteArrayList<Tab>();
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private volatile boolean mInitialTabsAdded;
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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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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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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 GeckoApp mActivity;
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private Tabs() {
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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("Session:RestoreEnd");
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registerEventListener("Reader:Added");
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registerEventListener("Reader:Removed");
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registerEventListener("Reader:Share");
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}
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public void attachToActivity(GeckoApp activity) {
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mActivity = activity;
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}
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public int getCount() {
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return mTabs.size();
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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(id, url, external, parentId, title) :
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new Tab(id, url, external, parentId, title);
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mTabs.put(id, tab);
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mOrder.add(tab);
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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 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 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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mSelectedTab = tab;
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mActivity.runOnUiThread(new Runnable() {
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public void run() {
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mActivity.hideFormAssistPopup();
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if (isSelectedTab(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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}
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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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public int getIndexOf(Tab tab) {
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return mOrder.lastIndexOf(tab);
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}
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public Tab getTabAt(int index) {
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if (index >= 0 && index < mOrder.size())
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return mOrder.get(index);
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else
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return null;
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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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if (mSelectedTab == null)
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return false;
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return tab == mSelectedTab;
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}
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public Tab getTab(int id) {
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if (getCount() == 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 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 void closeTab(final Tab tab, Tab nextTab) {
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if (tab == null)
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return;
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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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int tabId = tab.getId();
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removeTab(tabId);
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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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int index = getIndexOf(tab);
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Tab nextTab = getTabAt(index + 1);
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if (nextTab == null)
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nextTab = getTabAt(index - 1);
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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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public ContentResolver getContentResolver() {
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return mActivity.getContentResolver();
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}
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//Making 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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public void handleMessage(String event, JSONObject message) {
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try {
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if (event.startsWith("SessionHistory:")) {
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Tab tab = getTab(message.getInt("tabID"));
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if (tab != null) {
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event = event.substring("SessionHistory:".length());
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tab.handleSessionHistoryMessage(event, message);
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}
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} else if (event.equals("Tab:Added")) {
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String url = message.isNull("uri") ? null : message.getString("uri");
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int id = message.getInt("tabID");
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Tab tab = null;
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if (mTabs.containsKey(id)) {
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tab = mTabs.get(id);
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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(tab.getId());
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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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} else if (event.equals("Tab:Close")) {
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Tab tab = getTab(message.getInt("tabID"));
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closeTab(tab);
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} else if (event.equals("Tab:Select")) {
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selectTab(message.getInt("tabID"));
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} else if (event.equals("Content:LocationChange")) {
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Tab tab = getTab(message.getInt("tabID"));
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if (tab != null) {
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tab.handleLocationChange(message);
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}
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} else if (event.equals("Session:RestoreEnd")) {
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notifyListeners(null, TabEvents.RESTORED);
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} else if (event.equals("Reader:Added")) {
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final boolean success = message.getBoolean("success");
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final String title = message.getString("title");
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final String url = message.getString("url");
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handleReaderAdded(success, title, url);
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} else if (event.equals("Reader:Removed")) {
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final String url = message.getString("url");
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handleReaderRemoved(url);
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} else if (event.equals("Reader:Share")) {
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final String title = message.getString("title");
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final String url = message.getString("url");
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GeckoAppShell.openUriExternal(url, "text/plain", "", "",
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Intent.ACTION_SEND, title);
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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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void handleReaderAdded(boolean success, final String title, final String url) {
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if (!success) {
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mActivity.showToast(R.string.reading_list_failed, Toast.LENGTH_SHORT);
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return;
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}
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GeckoAppShell.getHandler().post(new Runnable() {
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public void run() {
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BrowserDB.addReadingListItem(getContentResolver(), title, url);
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mActivity.showToast(R.string.reading_list_added, Toast.LENGTH_SHORT);
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}
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});
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}
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void handleReaderRemoved(final String url) {
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GeckoAppShell.getHandler().post(new Runnable() {
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public void run() {
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BrowserDB.removeReadingListItemWithURL(getContentResolver(), url);
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mActivity.showToast(R.string.reading_list_removed, Toast.LENGTH_SHORT);
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}
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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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Iterator<Tab> iterator = mTabs.values().iterator();
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while (iterator.hasNext()) {
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final Tab tab = iterator.next();
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GeckoAppShell.getHandler().post(new Runnable() {
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public void run() {
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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 ArrayList<OnTabsChangedListener> mTabsChangedListeners;
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public static void registerOnTabsChangedListener(OnTabsChangedListener listener) {
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if (mTabsChangedListeners == null)
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mTabsChangedListeners = new ArrayList<OnTabsChangedListener>();
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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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if (mTabsChangedListeners == null)
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return;
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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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}
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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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public void notifyListeners(final Tab tab, final TabEvents msg, final Object data) {
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mActivity.runOnUiThread(new Runnable() {
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public void run() {
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onTabChanged(tab, msg, data);
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if (mTabsChangedListeners == null)
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return;
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Iterator<OnTabsChangedListener> items = mTabsChangedListeners.iterator();
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while (items.hasNext()) {
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items.next().onTabChanged(tab, msg, data);
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}
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}
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});
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}
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private void onTabChanged(Tab tab, Tabs.TabEvents msg, Object data) {
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switch(msg) {
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case LOCATION_CHANGE:
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mScore += SCORE_INCREMENT_TAB_LOCATION_CHANGE;
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break;
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case RESTORED:
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mInitialTabsAdded = true;
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break;
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// When one tab is deselected, another one is always selected, so only
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// increment the score once. When tabs are added/closed, they are also
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// selected/unselected, so it would be redundant to also listen
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// for ADDED/CLOSED events.
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case SELECTED:
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mScore += SCORE_INCREMENT_TAB_SELECTED;
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case UNSELECTED:
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tab.onChange();
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break;
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}
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if (mScore > SCORE_THRESHOLD) {
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persistAllTabs();
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mScore = 0;
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}
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}
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// This method persists the current ordered list of tabs in our tabs content provider.
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public void persistAllTabs() {
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final Iterable<Tab> tabs = getTabsInOrder();
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GeckoAppShell.getHandler().post(new Runnable() {
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public void run() {
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TabsAccessor.persistLocalTabs(getContentResolver(), tabs);
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}
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});
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}
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private void registerEventListener(String event) {
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GeckoAppShell.getEventDispatcher().registerEventListener(event, this);
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}
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/**
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* Loads a tab with the given URL in the currently selected tab.
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*
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* @param url URL of page to load, or search term used if searchEngine is given
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*/
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public void loadUrl(String url) {
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loadUrl(url, LOADURL_NONE);
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}
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/**
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* Loads a tab with the given URL.
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*
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* @param url URL of page to load, or search term used if searchEngine is given
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* @param flags flags used to load tab
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*
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* @return the Tab if a new one was created; null otherwise
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*/
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public Tab loadUrl(String url, int flags) {
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return loadUrl(url, null, -1, flags);
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}
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/**
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* Loads a tab with the given URL.
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*
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* @param url URL of page to load, or search term used if searchEngine is given
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* @param searchEngine if given, the search engine with this name is used
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* to search for the url string; if null, the URL is loaded directly
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* @param parentId ID of this tab's parent, or -1 if it has no parent
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* @param flags flags used to load tab
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*
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* @return the Tab if a new one was created; null otherwise
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*/
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public Tab loadUrl(String url, String searchEngine, int parentId, int flags) {
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JSONObject args = new JSONObject();
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Tab added = null;
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boolean delayLoad = (flags & LOADURL_DELAY_LOAD) != 0;
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try {
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boolean isPrivate = (flags & LOADURL_PRIVATE) != 0;
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boolean userEntered = (flags & LOADURL_USER_ENTERED) != 0;
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boolean desktopMode = (flags & LOADURL_DESKTOP) != 0;
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args.put("url", url);
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args.put("engine", searchEngine);
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args.put("parentId", parentId);
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args.put("userEntered", userEntered);
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args.put("newTab", (flags & LOADURL_NEW_TAB) != 0);
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args.put("isPrivate", isPrivate);
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args.put("pinned", (flags & LOADURL_PINNED) != 0);
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args.put("delayLoad", delayLoad);
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args.put("desktopMode", desktopMode);
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if ((flags & LOADURL_NEW_TAB) != 0) {
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int tabId = getNextTabId();
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args.put("tabID", tabId);
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// The URL is updated for the tab once Gecko responds with the
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// Tab:Added message. We can preliminarily set the tab's URL as
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// long as it's a valid URI.
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String tabUrl = (url != null && Uri.parse(url).getScheme() != null) ? url : null;
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added = addTab(tabId, tabUrl, false, parentId, url, isPrivate);
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added.setDesktopMode(desktopMode);
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}
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} catch (Exception e) {
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Log.w(LOGTAG, "Error building JSON arguments for loadUrl.", e);
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}
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GeckoAppShell.sendEventToGecko(GeckoEvent.createBroadcastEvent("Tab:Load", args.toString()));
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if ((added != null) && !delayLoad) {
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selectTab(added.getId());
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}
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return added;
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}
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/**
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* Open the url as a new tab, and mark the selected tab as its "parent".
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*
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* If the url is already open in a tab, the existing tab is selected.
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* Use this for tabs opened by the browser chrome, so users can press the
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* "Back" button to return to the previous tab.
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*
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* @param url URL of page to load
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*/
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public void loadUrlInTab(String url) {
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Iterable<Tab> tabs = getTabsInOrder();
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for (Tab tab : tabs) {
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if (url.equals(tab.getURL())) {
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selectTab(tab.getId());
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return;
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}
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}
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// getSelectedTab() can return null if no tab has been created yet
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// (i.e., we're restoring a session after a crash). In these cases,
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// don't mark any tabs as a parent.
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int parentId = -1;
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Tab selectedTab = getSelectedTab();
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if (selectedTab != null) {
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parentId = selectedTab.getId();
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}
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loadUrl(url, null, parentId, LOADURL_NEW_TAB);
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}
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/**
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* Gets the next tab ID.
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*
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* This method is invoked via JNI.
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*/
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public static int getNextTabId() {
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return sTabId.getAndIncrement();
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}
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}
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