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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 Apple Inc. All rights reserved.
* Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
*
* 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 "config.h"
#include "ViewportArguments.h"
#include "Chrome.h"
#include "Console.h"
#include "DOMWindow.h"
#include "Document.h"
#include "Frame.h"
#include "Page.h"
#include "PlatformString.h"
#include "ScriptableDocumentParser.h"
namespace WebCore {
void setViewportFeature(const String& keyString, const String& valueString, Document* document, void* data)
{
ViewportArguments* arguments = static_cast<ViewportArguments*>(data);
float value = ViewportArguments::ValueUndefined;
bool didUseConstants = false;
if (equalIgnoringCase(valueString, "yes"))
value = 1;
else if (equalIgnoringCase(valueString, "device-width")) {
didUseConstants = true;
if (document->page())
value = document->page()->chrome()->windowRect().width();
} else if (equalIgnoringCase(valueString, "device-height")) {
didUseConstants = true;
if (document->page())
value = document->page()->chrome()->windowRect().height();
} else if (equalIgnoringCase(valueString, "default")) // This allows us to distinguish the omission of a key from asking for the default value.
value = -2;
else if (valueString.length()) // listing a key with no value is shorthand for key=default
value = valueString.toFloat();
if (keyString == "initial-scale")
arguments->initialScale = value;
else if (keyString == "minimum-scale")
arguments->minimumScale = value;
else if (keyString == "maximum-scale") {
arguments->maximumScale = value;
if (value > 10.0)
reportViewportWarning(document, MaximumScaleTooLargeError, keyString);
} else if (keyString == "user-scalable")
arguments->userScalable = value;
else if (keyString == "width") {
if (document->page() && value == document->page()->chrome()->windowRect().width() && !didUseConstants)
reportViewportWarning(document, DeviceWidthShouldBeUsedWarning, keyString);
else if (document->page() && value == document->page()->chrome()->windowRect().height() && !didUseConstants)
reportViewportWarning(document, DeviceHeightShouldBeUsedWarning, keyString);
arguments->width = value;
} else if (keyString == "height") {
if (document->page() && value == document->page()->chrome()->windowRect().width() && !didUseConstants)
reportViewportWarning(document, DeviceWidthShouldBeUsedWarning, keyString);
else if (document->page() && value == document->page()->chrome()->windowRect().height() && !didUseConstants)
reportViewportWarning(document, DeviceHeightShouldBeUsedWarning, keyString);
arguments->height = value;
} else
reportViewportWarning(document, UnrecognizedViewportArgumentError, keyString);
}
static const char* viewportErrorMessageTemplate(ViewportErrorCode errorCode)
{
static const char* const errors[] = {
"Viewport width or height set to physical device width, try using \"device-width\" constant instead for future compatibility.",
"Viewport height or height set to physical device height, try using \"device-height\" constant instead for future compatibility.",
"Viewport argument \"%replacement\" not recognized. Content ignored.",
"Viewport maximum-scale cannot be larger than 10.0. The maximum-scale will be set to 10.0."
};
return errors[errorCode];
}
static MessageLevel viewportErrorMessageLevel(ViewportErrorCode errorCode)
{
return errorCode == UnrecognizedViewportArgumentError || errorCode == MaximumScaleTooLargeError ? ErrorMessageLevel : TipMessageLevel;
}
// FIXME: Why is this different from SVGDocumentExtensions parserLineNumber?
// FIXME: Callers should probably use ScriptController::eventHandlerLineNumber()
static int parserLineNumber(Document* document)
{
if (!document)
return 0;
ScriptableDocumentParser* parser = document->scriptableDocumentParser();
if (!parser)
return 0;
return parser->lineNumber() + 1;
}
void reportViewportWarning(Document* document, ViewportErrorCode errorCode, const String& replacement)
{
Frame* frame = document->frame();
if (!frame)
return;
String message = viewportErrorMessageTemplate(errorCode);
message.replace("%replacement", replacement);
frame->domWindow()->console()->addMessage(HTMLMessageSource, LogMessageType, viewportErrorMessageLevel(errorCode), message, parserLineNumber(document), document->url().string());
}
} // namespace WebCore
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