cef/libcef/renderer/dom_document_impl.cc

251 lines
6.2 KiB
C++

// Copyright (c) 2012 The Chromium Embedded Framework Authors. All rights
// reserved. Use of this source code is governed by a BSD-style license that
// can be found in the LICENSE file.
#include "libcef/renderer/dom_document_impl.h"
#include "libcef/renderer/dom_node_impl.h"
#include "libcef/renderer/thread_util.h"
#include "base/logging.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/public/web/web_document.h"
#include "third_party/blink/public/web/web_element.h"
#include "third_party/blink/public/web/web_local_frame.h"
#include "third_party/blink/public/web/web_node.h"
#include "third_party/blink/public/web/web_range.h"
using blink::WebDocument;
using blink::WebElement;
using blink::WebLocalFrame;
using blink::WebNode;
using blink::WebRange;
using blink::WebString;
using blink::WebURL;
CefDOMDocumentImpl::CefDOMDocumentImpl(CefBrowserImpl* browser,
WebLocalFrame* frame)
: browser_(browser), frame_(frame) {
const WebDocument& document = frame_->GetDocument();
DCHECK(!document.IsNull());
}
CefDOMDocumentImpl::~CefDOMDocumentImpl() {
CEF_REQUIRE_RT();
// Verify that the Detach() method has been called.
DCHECK(frame_ == nullptr);
}
CefDOMDocumentImpl::Type CefDOMDocumentImpl::GetType() {
if (!VerifyContext())
return DOM_DOCUMENT_TYPE_UNKNOWN;
const WebDocument& document = frame_->GetDocument();
if (document.IsHTMLDocument())
return DOM_DOCUMENT_TYPE_HTML;
if (document.IsXHTMLDocument())
return DOM_DOCUMENT_TYPE_XHTML;
if (document.IsPluginDocument())
return DOM_DOCUMENT_TYPE_PLUGIN;
return DOM_DOCUMENT_TYPE_UNKNOWN;
}
CefRefPtr<CefDOMNode> CefDOMDocumentImpl::GetDocument() {
const WebDocument& document = frame_->GetDocument();
return GetOrCreateNode(document.GetDocument());
}
CefRefPtr<CefDOMNode> CefDOMDocumentImpl::GetBody() {
const WebDocument& document = frame_->GetDocument();
return GetOrCreateNode(document.Body());
}
CefRefPtr<CefDOMNode> CefDOMDocumentImpl::GetHead() {
WebDocument document = frame_->GetDocument();
return GetOrCreateNode(document.Head());
}
CefString CefDOMDocumentImpl::GetTitle() {
CefString str;
if (!VerifyContext())
return str;
const WebDocument& document = frame_->GetDocument();
const WebString& title = document.Title();
if (!title.IsNull())
str = title.Utf16();
return str;
}
CefRefPtr<CefDOMNode> CefDOMDocumentImpl::GetElementById(const CefString& id) {
const WebDocument& document = frame_->GetDocument();
return GetOrCreateNode(
document.GetElementById(WebString::FromUTF16(id.ToString16())));
}
CefRefPtr<CefDOMNode> CefDOMDocumentImpl::GetFocusedNode() {
const WebDocument& document = frame_->GetDocument();
return GetOrCreateNode(document.FocusedElement());
}
bool CefDOMDocumentImpl::HasSelection() {
if (!VerifyContext())
return false;
return frame_->HasSelection();
}
int CefDOMDocumentImpl::GetSelectionStartOffset() {
if (!VerifyContext())
return 0;
if (!frame_->HasSelection())
return 0;
const WebRange& range = frame_->SelectionRange();
if (range.IsNull())
return 0;
return range.StartOffset();
}
int CefDOMDocumentImpl::GetSelectionEndOffset() {
if (!VerifyContext())
return 0;
if (!frame_->HasSelection())
return 0;
const WebRange& range = frame_->SelectionRange();
if (range.IsNull())
return 0;
return range.EndOffset();
}
CefString CefDOMDocumentImpl::GetSelectionAsMarkup() {
CefString str;
if (!VerifyContext())
return str;
if (!frame_->HasSelection())
return str;
const WebString& markup = frame_->SelectionAsMarkup();
if (!markup.IsNull())
str = markup.Utf16();
return str;
}
CefString CefDOMDocumentImpl::GetSelectionAsText() {
CefString str;
if (!VerifyContext())
return str;
if (!frame_->HasSelection())
return str;
const WebString& text = frame_->SelectionAsText();
if (!text.IsNull())
str = text.Utf16();
return str;
}
CefString CefDOMDocumentImpl::GetBaseURL() {
CefString str;
if (!VerifyContext())
return str;
const WebDocument& document = frame_->GetDocument();
const WebURL& url = document.BaseURL();
if (!url.IsNull()) {
GURL gurl = url;
str = gurl.spec();
}
return str;
}
CefString CefDOMDocumentImpl::GetCompleteURL(const CefString& partialURL) {
CefString str;
if (!VerifyContext())
return str;
const WebDocument& document = frame_->GetDocument();
const WebURL& url =
document.CompleteURL(WebString::FromUTF16(partialURL.ToString16()));
if (!url.IsNull()) {
GURL gurl = url;
str = gurl.spec();
}
return str;
}
CefRefPtr<CefDOMNode> CefDOMDocumentImpl::GetOrCreateNode(
const blink::WebNode& node) {
if (!VerifyContext())
return nullptr;
// Nodes may potentially be null.
if (node.IsNull())
return nullptr;
if (!node_map_.empty()) {
// Locate the existing node, if any.
NodeMap::const_iterator it = node_map_.find(node);
if (it != node_map_.end())
return it->second;
}
// Create the new node object.
CefRefPtr<CefDOMNode> nodeImpl(new CefDOMNodeImpl(this, node));
node_map_.insert(std::make_pair(node, nodeImpl.get()));
return nodeImpl;
}
void CefDOMDocumentImpl::RemoveNode(const blink::WebNode& node) {
if (!VerifyContext())
return;
if (!node_map_.empty()) {
NodeMap::iterator it = node_map_.find(node);
if (it != node_map_.end())
node_map_.erase(it);
}
}
void CefDOMDocumentImpl::Detach() {
if (!VerifyContext())
return;
// If you hit this assert it means that you are keeping references to node
// objects beyond the valid scope.
DCHECK(node_map_.empty());
// If you hit this assert it means that you are keeping references to this
// document object beyond the valid scope.
DCHECK(HasOneRef());
if (!node_map_.empty()) {
NodeMap::const_iterator it = node_map_.begin();
for (; it != node_map_.end(); ++it)
static_cast<CefDOMNodeImpl*>(it->second)->Detach();
node_map_.clear();
}
frame_ = nullptr;
}
bool CefDOMDocumentImpl::VerifyContext() {
if (!CEF_CURRENTLY_ON_RT() || frame_ == nullptr) {
NOTREACHED();
return false;
}
return true;
}