| /* |
| * Copyright (C) 2007 Apple 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: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "core/page/History.h" |
| |
| #include "bindings/v8/ExceptionState.h" |
| #include "bindings/v8/SerializedScriptValue.h" |
| #include "core/dom/Document.h" |
| #include "core/dom/ExceptionCode.h" |
| #include "core/history/BackForwardController.h" |
| #include "core/history/HistoryItem.h" |
| #include "core/loader/DocumentLoader.h" |
| #include "core/loader/FrameLoader.h" |
| #include "core/loader/FrameLoaderClient.h" |
| #include "core/page/Frame.h" |
| #include "core/page/Page.h" |
| #include "weborigin/KURL.h" |
| #include "weborigin/SecurityOrigin.h" |
| #include "wtf/MainThread.h" |
| |
| namespace WebCore { |
| |
| History::History(Frame* frame) |
| : DOMWindowProperty(frame) |
| , m_lastStateObjectRequested(0) |
| { |
| ScriptWrappable::init(this); |
| } |
| |
| unsigned History::length() const |
| { |
| if (!m_frame) |
| return 0; |
| if (!m_frame->page()) |
| return 0; |
| return m_frame->page()->backForward()->count(); |
| } |
| |
| SerializedScriptValue* History::state() |
| { |
| m_lastStateObjectRequested = stateInternal(); |
| return m_lastStateObjectRequested.get(); |
| } |
| |
| SerializedScriptValue* History::stateInternal() const |
| { |
| if (!m_frame) |
| return 0; |
| |
| if (HistoryItem* historyItem = m_frame->loader()->history()->currentItem()) |
| return historyItem->stateObject(); |
| |
| return 0; |
| } |
| |
| bool History::stateChanged() const |
| { |
| return m_lastStateObjectRequested != stateInternal(); |
| } |
| |
| bool History::isSameAsCurrentState(SerializedScriptValue* state) const |
| { |
| return state == stateInternal(); |
| } |
| |
| void History::back() |
| { |
| go(-1); |
| } |
| |
| void History::back(ScriptExecutionContext* context) |
| { |
| go(context, -1); |
| } |
| |
| void History::forward() |
| { |
| go(1); |
| } |
| |
| void History::forward(ScriptExecutionContext* context) |
| { |
| go(context, 1); |
| } |
| |
| void History::go(int distance) |
| { |
| if (!m_frame) |
| return; |
| |
| m_frame->navigationScheduler()->scheduleHistoryNavigation(distance); |
| } |
| |
| void History::go(ScriptExecutionContext* context, int distance) |
| { |
| if (!m_frame) |
| return; |
| |
| ASSERT(isMainThread()); |
| Document* activeDocument = toDocument(context); |
| if (!activeDocument) |
| return; |
| |
| if (!activeDocument->canNavigate(m_frame)) |
| return; |
| |
| m_frame->navigationScheduler()->scheduleHistoryNavigation(distance); |
| } |
| |
| KURL History::urlForState(const String& urlString) |
| { |
| KURL baseURL = m_frame->document()->baseURL(); |
| if (urlString.isEmpty()) |
| return baseURL; |
| |
| return KURL(baseURL, urlString); |
| } |
| |
| void History::stateObjectAdded(PassRefPtr<SerializedScriptValue> data, const String& title, const String& urlString, SameDocumentNavigationSource sameDocumentNavigationSource, ExceptionState& es) |
| { |
| if (!m_frame || !m_frame->page()) |
| return; |
| |
| KURL fullURL = urlForState(urlString); |
| if (!fullURL.isValid() || !m_frame->document()->securityOrigin()->canRequest(fullURL)) { |
| es.throwDOMException(SecurityError, "A history state object with URL '" + fullURL.elidedString() + "' cannot be created in a document with origin '" + m_frame->document()->securityOrigin()->toString() + "'."); |
| return; |
| } |
| m_frame->loader()->updateForSameDocumentNavigation(fullURL, sameDocumentNavigationSource, data, title); |
| } |
| |
| } // namespace WebCore |