NavigationHistory.java revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5package org.chromium.content_public.browser;
6
7//import org.chromium.content_public.browser.NavigationEntry;
8
9import java.util.ArrayList;
10
11/**
12 * {@link NavigationHistory} captures a snapshot of the navigation history of a
13 * {@link ContentViewCore}. It is a copy and will not be updated as navigation
14 * occurs on the source {@link ContentViewCore}.
15 */
16public class NavigationHistory {
17
18    private final ArrayList<NavigationEntry> mEntries = new ArrayList<NavigationEntry>();
19    private int mCurrentEntryIndex;
20
21    public void addEntry(NavigationEntry entry) {
22        mEntries.add(entry);
23    }
24
25    public void setCurrentEntryIndex(int currentEntryIndex) {
26        mCurrentEntryIndex = currentEntryIndex;
27    }
28
29    /**
30     * @return The number of entries in the history.
31     */
32    public int getEntryCount() {
33        return mEntries.size();
34    }
35
36    /**
37     * Returns the {@link NavigationEntry} for the given index.
38     */
39    public NavigationEntry getEntryAtIndex(int index) {
40        return mEntries.get(index);
41    }
42
43    /**
44     * Returns the index of the entry the {@link ContentViewCore} was navigated to
45     * when the history was fetched.
46     */
47    public int getCurrentEntryIndex() {
48        return mCurrentEntryIndex;
49    }
50
51}
52