Merge WebKit at r75993: Initial merge by git.

Change-Id: I602bbdc3974787a3b0450456a30a7868286921c3

1 files changed, 131 insertions, 0 deletions

diff --git a/Source/WebKit/chromium/src/BackForwardListChromium.cpp b/Source/WebKit/chromium/src/BackForwardListChromium.cpp
new file mode 100644
index 0000000..be2a72b
--- /dev/null
+++ b/Source/WebKit/chromium/src/BackForwardListChromium.cpp
@@ -0,0 +1,131 @@
+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "BackForwardListChromium.h"
+
+#include "HistoryItem.h"
+#include "WebViewClient.h"
+#include "WebViewImpl.h"
+#include <wtf/text/StringConcatenate.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+const char backForwardNavigationScheme[] = "chrome-back-forward";
+
+PassRefPtr<BackForwardListChromium> BackForwardListChromium::create(WebViewImpl* webView)
+{
+    return adoptRef(new BackForwardListChromium(webView));
+}
+
+BackForwardListChromium::BackForwardListChromium(WebViewImpl* webView)
+    : m_webView(webView)
+{
+}
+
+BackForwardListChromium::~BackForwardListChromium()
+{
+}
+
+void BackForwardListChromium::addItem(PassRefPtr<HistoryItem> item)
+{
+    m_currentItem = item;
+
+    // If WebCore adds a new HistoryItem, it means this is a new navigation (ie,
+    // not a reload or back/forward).
+    m_webView->observeNewNavigation();
+
+    if (m_webView->client())
+        m_webView->client()->didAddHistoryItem();
+}
+
+void BackForwardListChromium::goToItem(HistoryItem* item)
+{
+    m_currentItem = item;
+
+    if (m_pendingHistoryItem == item)
+        m_pendingHistoryItem = 0;
+}
+
+HistoryItem* BackForwardListChromium::itemAtIndex(int index)
+{
+    if (!m_webView->client())
+        return 0;
+
+    if (!index)
+        return m_currentItem.get();
+
+    if (index > forwardListCount() || -index > backListCount())
+        return 0;
+
+    // Since we don't keep the entire back/forward list, we have no way to
+    // properly implement this method.  We return a dummy entry instead that we
+    // intercept in our FrameLoaderClient implementation in case WebCore asks
+    // to navigate to this HistoryItem.
+
+    // FIXME: We should change WebCore to handle history.{back,forward,go}
+    // differently.  It should perhaps just ask the FrameLoaderClient to
+    // perform those navigations.
+
+    String urlString = makeString(backForwardNavigationScheme, "://go/", String::number(index));
+    m_pendingHistoryItem = HistoryItem::create(urlString, String(), 0);
+    return m_pendingHistoryItem.get();
+}
+
+int BackForwardListChromium::backListCount()
+{
+    if (!m_webView->client())
+        return 0;
+
+    return m_webView->client()->historyBackListCount();
+}
+
+int BackForwardListChromium::forwardListCount()
+{
+    if (!m_webView->client())
+        return 0;
+
+    return m_webView->client()->historyForwardListCount();
+}
+
+bool BackForwardListChromium::isActive()
+{
+    return m_webView->client();
+}
+
+void BackForwardListChromium::close()
+{
+    m_currentItem = 0;
+    m_pendingHistoryItem = 0;
+}
+
+} // namespace WebKit