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/*
* Copyright (C) 2010 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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 "ValidationMessage.h"
#include "CSSPropertyNames.h"
#include "CSSStyleSelector.h"
#include "CSSValueKeywords.h"
#include "ExceptionCodePlaceholder.h"
#include "FormAssociatedElement.h"
#include "HTMLBRElement.h"
#include "HTMLDivElement.h"
#include "HTMLNames.h"
#include "Page.h"
#include "RenderBlock.h"
#include "RenderObject.h"
#include "Settings.h"
#include "ShadowRoot.h"
#include "ShadowRootList.h"
#include "Text.h"
#include <wtf/PassOwnPtr.h>
namespace WebCore {
using namespace HTMLNames;
ALWAYS_INLINE ValidationMessage::ValidationMessage(FormAssociatedElement* element)
: m_element(element)
{
}
ValidationMessage::~ValidationMessage()
{
deleteBubbleTree();
}
PassOwnPtr<ValidationMessage> ValidationMessage::create(FormAssociatedElement* element)
{
return adoptPtr(new ValidationMessage(element));
}
void ValidationMessage::setMessage(const String& message)
{
// Don't modify the DOM tree in this context.
// If so, an assertion in Node::isFocusable() fails.
ASSERT(!message.isEmpty());
m_message = message;
if (!m_bubble)
m_timer = adoptPtr(new Timer<ValidationMessage>(this, &ValidationMessage::buildBubbleTree));
else
m_timer = adoptPtr(new Timer<ValidationMessage>(this, &ValidationMessage::setMessageDOMAndStartTimer));
m_timer->startOneShot(0);
}
void ValidationMessage::setMessageDOMAndStartTimer(Timer<ValidationMessage>*)
{
ASSERT(m_messageHeading);
ASSERT(m_messageBody);
m_messageHeading->removeAllChildren();
m_messageBody->removeAllChildren();
Vector<String> lines;
m_message.split('\n', lines);
Document* doc = m_messageHeading->document();
for (unsigned i = 0; i < lines.size(); ++i) {
if (i) {
m_messageBody->appendChild(Text::create(doc, lines[i]), ASSERT_NO_EXCEPTION);
if (i < lines.size() - 1)
m_messageBody->appendChild(HTMLBRElement::create(doc), ASSERT_NO_EXCEPTION);
} else
m_messageHeading->setInnerText(lines[i], ASSERT_NO_EXCEPTION);
}
int magnification = doc->page() ? doc->page()->settings()->validationMessageTimerMaginification() : -1;
if (magnification <= 0)
m_timer.clear();
else {
m_timer = adoptPtr(new Timer<ValidationMessage>(this, &ValidationMessage::deleteBubbleTree));
m_timer->startOneShot(max(5.0, static_cast<double>(m_message.length()) * magnification / 1000));
}
}
static void adjustBubblePosition(const LayoutRect& hostRect, HTMLElement* bubble)
{
ASSERT(bubble);
if (hostRect.isEmpty())
return;
double hostX = hostRect.x();
double hostY = hostRect.y();
if (RenderBox* container = bubble->renderer()->containingBlock()) {
FloatPoint containerLocation = container->localToAbsolute();
hostX -= containerLocation.x() + container->borderLeft();
hostY -= containerLocation.y() + container->borderTop();
}
bubble->setInlineStyleProperty(CSSPropertyTop, hostY + hostRect.height(), CSSPrimitiveValue::CSS_PX);
// The 'left' value of ::-webkit-validation-bubble-arrow.
const int bubbleArrowTopOffset = 32;
double bubbleX = hostX;
if (hostRect.width() / 2 < bubbleArrowTopOffset)
bubbleX = max(hostX + hostRect.width() / 2 - bubbleArrowTopOffset, 0.0);
bubble->setInlineStyleProperty(CSSPropertyLeft, bubbleX, CSSPrimitiveValue::CSS_PX);
}
void ValidationMessage::buildBubbleTree(Timer<ValidationMessage>*)
{
HTMLElement* host = toHTMLElement(m_element);
Document* doc = host->document();
m_bubble = HTMLDivElement::create(doc);
m_bubble->setShadowPseudoId("-webkit-validation-bubble");
// Need to force position:absolute because RenderMenuList doesn't assume it
// contains non-absolute or non-fixed renderers as children.
m_bubble->setInlineStyleProperty(CSSPropertyPosition, CSSValueAbsolute);
ExceptionCode ec = 0;
host->ensureShadowRoot()->appendChild(m_bubble.get(), ec);
ASSERT(!ec);
adjustBubblePosition(host->getRect(), m_bubble.get());
RefPtr<HTMLDivElement> clipper = HTMLDivElement::create(doc);
clipper->setShadowPseudoId("-webkit-validation-bubble-arrow-clipper");
RefPtr<HTMLDivElement> bubbleArrow = HTMLDivElement::create(doc);
bubbleArrow->setShadowPseudoId("-webkit-validation-bubble-arrow");
clipper->appendChild(bubbleArrow.release(), ec);
ASSERT(!ec);
m_bubble->appendChild(clipper.release(), ec);
ASSERT(!ec);
RefPtr<HTMLElement> message = HTMLDivElement::create(doc);
message->setShadowPseudoId("-webkit-validation-bubble-message");
RefPtr<HTMLElement> icon = HTMLDivElement::create(doc);
icon->setShadowPseudoId("-webkit-validation-bubble-icon");
message->appendChild(icon.release(), ASSERT_NO_EXCEPTION);
RefPtr<HTMLElement> textBlock = HTMLDivElement::create(doc);
textBlock->setShadowPseudoId("-webkit-validation-bubble-text-block");
m_messageHeading = HTMLDivElement::create(doc);
m_messageHeading->setShadowPseudoId("-webkit-validation-bubble-heading");
textBlock->appendChild(m_messageHeading, ASSERT_NO_EXCEPTION);
m_messageBody = HTMLDivElement::create(doc);
m_messageBody->setShadowPseudoId("-webkit-validation-bubble-body");
textBlock->appendChild(m_messageBody, ASSERT_NO_EXCEPTION);
message->appendChild(textBlock.release(), ASSERT_NO_EXCEPTION);
m_bubble->appendChild(message.release(), ASSERT_NO_EXCEPTION);
setMessageDOMAndStartTimer();
// FIXME: Use transition to show the bubble.
}
void ValidationMessage::requestToHideMessage()
{
// We must not modify the DOM tree in this context by the same reason as setMessage().
m_timer = adoptPtr(new Timer<ValidationMessage>(this, &ValidationMessage::deleteBubbleTree));
m_timer->startOneShot(0);
}
void ValidationMessage::deleteBubbleTree(Timer<ValidationMessage>*)
{
if (m_bubble) {
m_messageHeading = 0;
m_messageBody = 0;
HTMLElement* host = toHTMLElement(m_element);
ExceptionCode ec;
host->shadowRootList()->oldestShadowRoot()->removeChild(m_bubble.get(), ec);
m_bubble = 0;
}
m_message = String();
}
} // namespace WebCore
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