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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2006 Alexey Proskuryakov (ap@webkit.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All
* rights reserved.
* Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
* (http://www.torchmobile.com/)
* Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
* Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "third_party/blink/renderer/core/dom/document.h"
#include "base/auto_reset.h"
#include "third_party/blink/renderer/core/dom/events/scoped_event_queue.h"
#include "third_party/blink/renderer/core/editing/commands/editing_commands_utilities.h"
#include "third_party/blink/renderer/core/editing/commands/editor_command.h"
#include "third_party/blink/renderer/core/editing/editing_tri_state.h"
#include "third_party/blink/renderer/core/editing/editor.h"
#include "third_party/blink/renderer/core/frame/local_frame.h"
#include "third_party/blink/renderer/core/frame/use_counter.h"
#include "third_party/blink/renderer/core/html/forms/text_control_element.h"
#include "third_party/blink/renderer/core/inspector/console_message.h"
#include "third_party/blink/renderer/platform/histogram.h"
#include "third_party/blink/renderer/platform/wtf/std_lib_extras.h"
namespace blink {
namespace {
EditorCommand GetCommand(Document* document, const String& command_name) {
LocalFrame* frame = document->GetFrame();
if (!frame || frame->GetDocument() != document)
return EditorCommand();
document->UpdateStyleAndLayoutTree();
return frame->GetEditor().CreateCommand(command_name,
EditorCommandSource::kDOM);
}
} // namespace
bool Document::execCommand(const String& command_name,
bool,
const String& value,
ExceptionState& exception_state) {
if (!IsHTMLDocument() && !IsXHTMLDocument()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"execCommand is only supported on HTML documents.");
return false;
}
if (FocusedElement() && IsTextControl(*FocusedElement()))
UseCounter::Count(*this, WebFeature::kExecCommandOnInputOrTextarea);
// We don't allow recursive |execCommand()| to protect against attack code.
// Recursive call of |execCommand()| could be happened by moving iframe
// with script triggered by insertion, e.g. <iframe src="javascript:...">
// <iframe onload="...">. This usage is valid as of the specification
// although, it isn't common use case, rather it is used as attack code.
if (is_running_exec_command_) {
String message =
"We don't execute document.execCommand() this time, because it is "
"called recursively.";
AddConsoleMessage(
ConsoleMessage::Create(mojom::ConsoleMessageSource::kJavaScript,
mojom::ConsoleMessageLevel::kWarning, message));
return false;
}
base::AutoReset<bool> execute_scope(&is_running_exec_command_, true);
// Postpone DOM mutation events, which can execute scripts and change
// DOM tree against implementation assumption.
EventQueueScope event_queue_scope;
TidyUpHTMLStructure(*this);
const EditorCommand editor_command = GetCommand(this, command_name);
DEFINE_STATIC_LOCAL(SparseHistogram, editor_command_histogram,
("WebCore.Document.execCommand"));
editor_command_histogram.Sample(editor_command.IdForHistogram());
return editor_command.Execute(value);
}
bool Document::queryCommandEnabled(const String& command_name,
ExceptionState& exception_state) {
if (!IsHTMLDocument() && !IsXHTMLDocument()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"queryCommandEnabled is only supported on HTML documents.");
return false;
}
return GetCommand(this, command_name).IsEnabled();
}
bool Document::queryCommandIndeterm(const String& command_name,
ExceptionState& exception_state) {
if (!IsHTMLDocument() && !IsXHTMLDocument()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"queryCommandIndeterm is only supported on HTML documents.");
return false;
}
return GetCommand(this, command_name).GetState() == EditingTriState::kMixed;
}
bool Document::queryCommandState(const String& command_name,
ExceptionState& exception_state) {
if (!IsHTMLDocument() && !IsXHTMLDocument()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"queryCommandState is only supported on HTML documents.");
return false;
}
return GetCommand(this, command_name).GetState() == EditingTriState::kTrue;
}
bool Document::queryCommandSupported(const String& command_name,
ExceptionState& exception_state) {
if (!IsHTMLDocument() && !IsXHTMLDocument()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"queryCommandSupported is only supported on HTML documents.");
return false;
}
return GetCommand(this, command_name).IsSupported();
}
String Document::queryCommandValue(const String& command_name,
ExceptionState& exception_state) {
if (!IsHTMLDocument() && !IsXHTMLDocument()) {
exception_state.ThrowDOMException(
DOMExceptionCode::kInvalidStateError,
"queryCommandValue is only supported on HTML documents.");
return "";
}
return GetCommand(this, command_name).Value();
}
} // namespace blink
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