domcoreclasses.cpp

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

/*
 * Copyright (C) 2006, 2007, 2009 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 "WebKitDLL.h"
#include "DOMCoreClasses.h"

#include "COMPtr.h"
#include "DOMCSSClasses.h"
#include "DOMEventsClasses.h"
#include "DOMHTMLClasses.h"
#include "WebKitGraphics.h"

#pragma warning(push, 0)
#include <WebCore/BString.h>
#include <WebCore/DOMWindow.h>
#include <WebCore/Document.h>
#include <WebCore/Element.h>
#include <WebCore/Frame.h>
#include <WebCore/SimpleFontData.h>
#include <WebCore/HTMLFormElement.h>
#include <WebCore/HTMLInputElement.h>
#include <WebCore/HTMLNames.h>
#include <WebCore/HTMLOptionElement.h>
#include <WebCore/HTMLSelectElement.h>
#include <WebCore/HTMLTextAreaElement.h>
#include <WebCore/NodeList.h>
#include <WebCore/RenderObject.h>
#pragma warning(pop)

#include <initguid.h>
// {3B0C0EFF-478B-4b0b-8290-D2321E08E23E}
DEFINE_GUID(IID_DOMElement, 0x3b0c0eff, 0x478b, 0x4b0b, 0x82, 0x90, 0xd2, 0x32, 0x1e, 0x8, 0xe2, 0x3e);

// Our normal style is just to say "using namespace WebCore" rather than having
// individual using directives for each type from that namespace. But
// "DOMObject" exists both in the WebCore namespace and unnamespaced in this
// file, which leads to ambiguities if we say "using namespace WebCore".
using namespace WebCore::HTMLNames;
using WebCore::AtomicString;
using WebCore::BString;
using WebCore::Element;
using WebCore::ExceptionCode;
using WebCore::FontDescription;
using WebCore::Frame;
using WebCore::IntRect;
using WebCore::String;

// DOMObject - IUnknown -------------------------------------------------------

HRESULT STDMETHODCALLTYPE DOMObject::QueryInterface(REFIID riid, void** ppvObject)
{
    *ppvObject = 0;
    if (IsEqualGUID(riid, IID_IDOMObject))
        *ppvObject = static_cast<IDOMObject*>(this);
    else
        return WebScriptObject::QueryInterface(riid, ppvObject);

    AddRef();
    return S_OK;
}

// DOMNode - IUnknown ---------------------------------------------------------

HRESULT STDMETHODCALLTYPE DOMNode::QueryInterface(REFIID riid, void** ppvObject)
{
    *ppvObject = 0;
    if (IsEqualGUID(riid, IID_IDOMNode))
        *ppvObject = static_cast<IDOMNode*>(this);
    else if (IsEqualGUID(riid, __uuidof(DOMNode)))
        *ppvObject = static_cast<DOMNode*>(this);
    else
        return DOMObject::QueryInterface(riid, ppvObject);

    AddRef();
    return S_OK;
}

// DOMNode --------------------------------------------------------------------

HRESULT STDMETHODCALLTYPE DOMNode::nodeName( 
    /* [retval][out] */ BSTR* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::nodeValue( 
    /* [retval][out] */ BSTR* result)
{
    if (!m_node)
        return E_FAIL;
    WebCore::String nodeValueStr = m_node->nodeValue();
    *result = SysAllocStringLen(nodeValueStr.characters(), nodeValueStr.length());
    if (nodeValueStr.length() && !*result)
        return E_OUTOFMEMORY;
    return S_OK;
}

HRESULT STDMETHODCALLTYPE DOMNode::setNodeValue( 
    /* [in] */ BSTR /*value*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::nodeType( 
    /* [retval][out] */ unsigned short* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::parentNode( 
    /* [retval][out] */ IDOMNode** result)
{
    *result = 0;
    if (!m_node || !m_node->parentNode())
        return E_FAIL;
    *result = DOMNode::createInstance(m_node->parentNode());
    return *result ? S_OK : E_FAIL;
}

HRESULT STDMETHODCALLTYPE DOMNode::childNodes( 
    /* [retval][out] */ IDOMNodeList** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::firstChild( 
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::lastChild( 
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::previousSibling( 
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::nextSibling( 
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::attributes( 
    /* [retval][out] */ IDOMNamedNodeMap** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::ownerDocument( 
    /* [retval][out] */ IDOMDocument** result)
{
    if (!result)
        return E_POINTER;
    *result = 0;
    if (!m_node)
        return E_FAIL;
    *result = DOMDocument::createInstance(m_node->ownerDocument());
    return *result ? S_OK : E_FAIL;
}

HRESULT STDMETHODCALLTYPE DOMNode::insertBefore( 
    /* [in] */ IDOMNode* /*newChild*/,
    /* [in] */ IDOMNode* /*refChild*/,
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::replaceChild( 
    /* [in] */ IDOMNode* /*newChild*/,
    /* [in] */ IDOMNode* /*oldChild*/,
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::removeChild( 
    /* [in] */ IDOMNode* /*oldChild*/,
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::appendChild( 
    /* [in] */ IDOMNode* /*oldChild*/,
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::hasChildNodes( 
    /* [retval][out] */ BOOL* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::cloneNode( 
    /* [in] */ BOOL /*deep*/,
    /* [retval][out] */ IDOMNode** /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::normalize( void)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::isSupported( 
    /* [in] */ BSTR /*feature*/,
    /* [in] */ BSTR /*version*/,
    /* [retval][out] */ BOOL* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::namespaceURI( 
    /* [retval][out] */ BSTR* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::prefix( 
    /* [retval][out] */ BSTR* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::setPrefix( 
    /* [in] */ BSTR /*prefix*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::localName( 
    /* [retval][out] */ BSTR* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::hasAttributes( 
    /* [retval][out] */ BOOL* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::isSameNode( 
    /* [in] */ IDOMNode* other,
    /* [retval][out] */ BOOL* result)
{
    if (!result) {
        ASSERT_NOT_REACHED();
        return E_POINTER;
    }

    *result = FALSE;

    if (!other)
        return E_POINTER;

    COMPtr<DOMNode> domOther;
    HRESULT hr = other->QueryInterface(__uuidof(DOMNode), (void**)&domOther);
    if (FAILED(hr))
        return hr;

    *result = m_node->isSameNode(domOther->node()) ? TRUE : FALSE;
    return S_OK;
}

HRESULT STDMETHODCALLTYPE DOMNode::isEqualNode( 
    /* [in] */ IDOMNode* /*other*/,
    /* [retval][out] */ BOOL* /*result*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::textContent( 
    /* [retval][out] */ BSTR* result)
{
    if (!result)
        return E_POINTER;

    *result = BString(m_node->textContent()).release();

    return S_OK;
}

HRESULT STDMETHODCALLTYPE DOMNode::setTextContent( 
    /* [in] */ BSTR /*text*/)
{
    ASSERT_NOT_REACHED();
    return E_NOTIMPL;
}

// DOMNode - IDOMEventTarget --------------------------------------------------

HRESULT STDMETHODCALLTYPE DOMNode::addEventListener( 
    /* [in] */ BSTR /*type*/,
    /* [in] */ IDOMEventListener* /*listener*/,
    /* [in] */ BOOL /*useCapture*/)
{
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::removeEventListener( 
    /* [in] */ BSTR /*type*/,
    /* [in] */ IDOMEventListener* /*listener*/,
    /* [in] */ BOOL /*useCapture*/)
{
    return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE DOMNode::dispatchEvent( 
    /* [in] */ IDOMEvent* evt,
    /* [retval][out] */ BOOL* result)
{
    if (!m_node || !evt)
        return E_FAIL;

#if 0   // FIXME - raise dom exceptions
    if (![self _node]->isEventTargetNode())
        WebCore::raiseDOMException(DOM_NOT_SUPPORTED_ERR);
#endif

    COMPtr<DOMEvent> domEvent;
    HRESULT hr = evt->QueryInterface(IID_DOMEvent, (void**) &domEvent);
    if (FAILED(hr))
        return hr;

    WebCore::ExceptionCode ec = 0;
    *result = m_node->dispatchEvent(domEvent->coreEvent(), ec) ? TRUE : FALSE;
#if 0   // FIXME - raise dom exceptions
    WebCore::raiseOnDOMError(ec);
#endif
    return S_OK;
}

// DOMNode - DOMNode ----------------------------------------------------------

DOMNode::DOMNode(WebCore::Node* n)
: m_node(0)
{
    if (n)
        n->ref();

    m_node = n;
}

DOMNode::~DOMNode()
{
    if (m_node)
        m_node->deref();
}

IDOMNode* DOMNode::createInstance(WebCore::Node* n)
{
    if (!n)
        return 0;

    HRESULT hr = S_OK;
    IDOMNode* domNode = 0;
    WebCore::Node::NodeType nodeType = n->nodeType();

    switch (nodeType) {
        case WebCore::Node::ELEMENT_NODE: 
        {
            IDOMElement* newElement = DOMElement::createInstance(static_cast<WebCore::Element*>(n));
            if (newElement) {
                hr = newElement->QueryInterface(IID_IDOMNode, (void**)&domNode);
                newElement->Release();
            }
        }
        break;
        case WebCore::Node::DOCUMENT_NODE:
        {
            IDOMDocument* newDocument = DOMDocument::createInstance(n->document());
            if (newDocument) {
                hr = newDocument->QueryInterface(IID_IDOMNode, (void**)&domNode);
                newDocument->Release();
            }
        }
        break;