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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* (C) 2000 Stefan Schimanski (1Stein@gmx.de)
* Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. 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 "config.h"
#include "RenderEmbeddedObject.h"
#include "CSSValueKeywords.h"
#include "Chrome.h"
#include "ChromeClient.h"
#include "Cursor.h"
#include "EventHandler.h"
#include "FontCascade.h"
#include "FontSelector.h"
#include "Frame.h"
#include "FrameLoaderClient.h"
#include "GraphicsContext.h"
#include "HTMLAppletElement.h"
#include "HTMLEmbedElement.h"
#include "HTMLIFrameElement.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "HTMLParamElement.h"
#include "HTMLPlugInElement.h"
#include "HitTestResult.h"
#include "LocalizedStrings.h"
#include "MIMETypeRegistry.h"
#include "MouseEvent.h"
#include "Page.h"
#include "PaintInfo.h"
#include "Path.h"
#include "PlatformMouseEvent.h"
#include "PluginViewBase.h"
#include "RenderLayer.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "Settings.h"
#include "Text.h"
#include "TextRun.h"
#include <wtf/StackStats.h>
namespace WebCore {
using namespace HTMLNames;
static const float replacementTextRoundedRectHeight = 22;
static const float replacementTextRoundedRectLeftTextMargin = 10;
static const float replacementTextRoundedRectRightTextMargin = 10;
static const float replacementTextRoundedRectRightTextMarginWithArrow = 5;
static const float replacementTextRoundedRectTopTextMargin = -1;
static const float replacementTextRoundedRectRadius = 11;
static const float replacementArrowLeftMargin = -4;
static const float replacementArrowPadding = 4;
static const float replacementArrowCirclePadding = 3;
static const Color& replacementTextRoundedRectPressedColor()
{
static const Color pressed(105, 105, 105, 242);
return pressed;
}
static const Color& replacementTextRoundedRectColor()
{
static const Color standard(125, 125, 125, 242);
return standard;
}
static const Color& replacementTextColor()
{
static const Color standard(240, 240, 240, 255);
return standard;
}
static const Color& unavailablePluginBorderColor()
{
static const Color standard(255, 255, 255, 216);
return standard;
}
RenderEmbeddedObject::RenderEmbeddedObject(HTMLFrameOwnerElement& element, Ref<RenderStyle>&& style)
: RenderWidget(element, WTFMove(style))
, m_isPluginUnavailable(false)
, m_unavailablePluginIndicatorIsPressed(false)
, m_mouseDownWasInUnavailablePluginIndicator(false)
{
// Actual size is not known yet, report the default intrinsic size.
view().frameView().incrementVisuallyNonEmptyPixelCount(roundedIntSize(intrinsicSize()));
}
RenderEmbeddedObject::~RenderEmbeddedObject()
{
view().frameView().removeEmbeddedObjectToUpdate(*this);
}
RenderPtr<RenderEmbeddedObject> RenderEmbeddedObject::createForApplet(HTMLAppletElement& applet, Ref<RenderStyle>&& style)
{
auto renderer = createRenderer<RenderEmbeddedObject>(applet, WTFMove(style));
renderer->setInline(true);
return renderer;
}
bool RenderEmbeddedObject::requiresLayer() const
{
if (RenderWidget::requiresLayer())
return true;
return allowsAcceleratedCompositing();
}
bool RenderEmbeddedObject::allowsAcceleratedCompositing() const
{
#if PLATFORM(IOS)
// The timing of layer creation is different on the phone, since the plugin can only be manipulated from the main thread.
return is<PluginViewBase>(widget()) && downcast<PluginViewBase>(*widget()).willProvidePluginLayer();
#else
return is<PluginViewBase>(widget()) && downcast<PluginViewBase>(*widget()).platformLayer();
#endif
}
#if !PLATFORM(IOS)
static String unavailablePluginReplacementText(RenderEmbeddedObject::PluginUnavailabilityReason pluginUnavailabilityReason)
{
switch (pluginUnavailabilityReason) {
case RenderEmbeddedObject::PluginMissing:
return missingPluginText();
case RenderEmbeddedObject::PluginCrashed:
return crashedPluginText();
case RenderEmbeddedObject::PluginBlockedByContentSecurityPolicy:
return blockedPluginByContentSecurityPolicyText();
case RenderEmbeddedObject::InsecurePluginVersion:
return insecurePluginVersionText();
}
ASSERT_NOT_REACHED();
return String();
}
#endif
static bool shouldUnavailablePluginMessageBeButton(Document& document, RenderEmbeddedObject::PluginUnavailabilityReason pluginUnavailabilityReason)
{
Page* page = document.page();
return page && page->chrome().client().shouldUnavailablePluginMessageBeButton(pluginUnavailabilityReason);
}
void RenderEmbeddedObject::setPluginUnavailabilityReason(PluginUnavailabilityReason pluginUnavailabilityReason)
{
#if PLATFORM(IOS)
UNUSED_PARAM(pluginUnavailabilityReason);
#else
setPluginUnavailabilityReasonWithDescription(pluginUnavailabilityReason, unavailablePluginReplacementText(pluginUnavailabilityReason));
#endif
}
void RenderEmbeddedObject::setPluginUnavailabilityReasonWithDescription(PluginUnavailabilityReason pluginUnavailabilityReason, const String& description)
{
#if PLATFORM(IOS)
UNUSED_PARAM(pluginUnavailabilityReason);
UNUSED_PARAM(description);
#else
ASSERT(!m_isPluginUnavailable);
m_isPluginUnavailable = true;
m_pluginUnavailabilityReason = pluginUnavailabilityReason;
if (description.isEmpty())
m_unavailablePluginReplacementText = unavailablePluginReplacementText(pluginUnavailabilityReason);
else
m_unavailablePluginReplacementText = description;
#endif
}
void RenderEmbeddedObject::setUnavailablePluginIndicatorIsPressed(bool pressed)
{
if (m_unavailablePluginIndicatorIsPressed == pressed)
return;
m_unavailablePluginIndicatorIsPressed = pressed;
repaint();
}
void RenderEmbeddedObject::paintSnapshotImage(PaintInfo& paintInfo, const LayoutPoint& paintOffset, Image& image)
{
LayoutUnit cWidth = contentWidth();
LayoutUnit cHeight = contentHeight();
if (!cWidth || !cHeight)
return;
GraphicsContext& context = paintInfo.context();
LayoutSize contentSize(cWidth, cHeight);
LayoutPoint contentLocation = location() + paintOffset;
contentLocation.move(borderLeft() + paddingLeft(), borderTop() + paddingTop());
LayoutRect rect(contentLocation, contentSize);
IntRect alignedRect = snappedIntRect(rect);
if (alignedRect.width() <= 0 || alignedRect.height() <= 0)
return;
InterpolationQuality interpolation = chooseInterpolationQuality(context, image, &image, alignedRect.size());
ImageOrientationDescription orientationDescription(shouldRespectImageOrientation(), style().imageOrientation());
context.drawImage(image, alignedRect, ImagePaintingOptions(orientationDescription, interpolation));
}
void RenderEmbeddedObject::paintContents(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (!is<HTMLPlugInElement>(frameOwnerElement()))
return;
HTMLPlugInElement& plugInElement = downcast<HTMLPlugInElement>(frameOwnerElement());
if (plugInElement.displayState() > HTMLPlugInElement::DisplayingSnapshot) {
RenderWidget::paintContents(paintInfo, paintOffset);
if (!plugInElement.isRestartedPlugin())
return;
}
if (!is<HTMLPlugInImageElement>(plugInElement))
return;
if (Image* snapshot = downcast<HTMLPlugInImageElement>(plugInElement).snapshotImage())
paintSnapshotImage(paintInfo, paintOffset, *snapshot);
}
void RenderEmbeddedObject::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
Page* page = frame().page();
// The relevant repainted object heuristic is not tuned for plugin documents.
bool countsTowardsRelevantObjects = page && !document().isPluginDocument() && paintInfo.phase == PaintPhaseForeground;
if (isPluginUnavailable()) {
if (countsTowardsRelevantObjects)
page->addRelevantUnpaintedObject(this, visualOverflowRect());
RenderReplaced::paint(paintInfo, paintOffset);
return;
}
if (countsTowardsRelevantObjects)
page->addRelevantRepaintedObject(this, visualOverflowRect());
RenderWidget::paint(paintInfo, paintOffset);
}
static void drawReplacementArrow(GraphicsContext& context, const FloatRect& insideRect)
{
GraphicsContextStateSaver stateSaver(context);
FloatRect rect(insideRect);
rect.inflate(-replacementArrowPadding);
FloatPoint center(rect.center());
FloatPoint arrowTip(rect.maxX(), center.y());
context.setStrokeThickness(2);
context.setLineCap(RoundCap);
context.setLineJoin(RoundJoin);
Path path;
path.moveTo(FloatPoint(rect.x(), center.y()));
path.addLineTo(arrowTip);
path.addLineTo(FloatPoint(center.x(), rect.y()));
path.moveTo(arrowTip);
path.addLineTo(FloatPoint(center.x(), rect.maxY()));
context.strokePath(path);
}
void RenderEmbeddedObject::paintReplaced(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (!showsUnavailablePluginIndicator())
return;
if (paintInfo.phase == PaintPhaseSelection)
return;
GraphicsContext& context = paintInfo.context();
if (context.paintingDisabled())
return;
FloatRect contentRect;
FloatRect indicatorRect;
FloatRect replacementTextRect;
FloatRect arrowRect;
FontCascade font;
TextRun run(emptyString());
float textWidth;
if (!getReplacementTextGeometry(paintOffset, contentRect, indicatorRect, replacementTextRect, arrowRect, font, run, textWidth))
return;
Path background;
background.addRoundedRect(indicatorRect, FloatSize(replacementTextRoundedRectRadius, replacementTextRoundedRectRadius));
GraphicsContextStateSaver stateSaver(context);
context.clip(contentRect);
context.setFillColor(m_unavailablePluginIndicatorIsPressed ? replacementTextRoundedRectPressedColor() : replacementTextRoundedRectColor());
context.fillPath(background);
Path strokePath;
FloatRect strokeRect(indicatorRect);
strokeRect.inflate(1);
strokePath.addRoundedRect(strokeRect, FloatSize(replacementTextRoundedRectRadius + 1, replacementTextRoundedRectRadius + 1));
context.setStrokeColor(unavailablePluginBorderColor());
context.setStrokeThickness(2);
context.strokePath(strokePath);
const FontMetrics& fontMetrics = font.fontMetrics();
float labelX = roundf(replacementTextRect.location().x() + replacementTextRoundedRectLeftTextMargin);
float labelY = roundf(replacementTextRect.location().y() + (replacementTextRect.size().height() - fontMetrics.height()) / 2 + fontMetrics.ascent() + replacementTextRoundedRectTopTextMargin);
context.setFillColor(replacementTextColor());
context.drawBidiText(font, run, FloatPoint(labelX, labelY));
if (shouldUnavailablePluginMessageBeButton(document(), m_pluginUnavailabilityReason)) {
arrowRect.inflate(-replacementArrowCirclePadding);
context.beginTransparencyLayer(1.0);
context.setFillColor(replacementTextColor());
context.fillEllipse(arrowRect);
context.setCompositeOperation(CompositeClear);
drawReplacementArrow(context, arrowRect);
context.endTransparencyLayer();
}
}
void RenderEmbeddedObject::setUnavailablePluginIndicatorIsHidden(bool hidden)
{
auto newState = hidden ? UnavailablePluginIndicatorState::Hidden : UnavailablePluginIndicatorState::Visible;
if (m_isUnavailablePluginIndicatorState == newState)
return;
m_isUnavailablePluginIndicatorState = newState;
repaint();
}
bool RenderEmbeddedObject::getReplacementTextGeometry(const LayoutPoint& accumulatedOffset, FloatRect& contentRect, FloatRect& indicatorRect, FloatRect& replacementTextRect, FloatRect& arrowRect, FontCascade& font, TextRun& run, float& textWidth) const
{
bool includesArrow = shouldUnavailablePluginMessageBeButton(document(), m_pluginUnavailabilityReason);
contentRect = contentBoxRect();
contentRect.moveBy(roundedIntPoint(accumulatedOffset));
FontCascadeDescription fontDescription;
RenderTheme::defaultTheme()->systemFont(CSSValueWebkitSmallControl, fontDescription);
fontDescription.setWeight(FontWeightBold);
fontDescription.setRenderingMode(frame().settings().fontRenderingMode());
fontDescription.setComputedSize(12);
font = FontCascade(fontDescription, 0, 0);
font.update(0);
run = TextRun(m_unavailablePluginReplacementText);
textWidth = font.width(run);
replacementTextRect.setSize(FloatSize(textWidth + replacementTextRoundedRectLeftTextMargin + (includesArrow ? replacementTextRoundedRectRightTextMarginWithArrow : replacementTextRoundedRectRightTextMargin), replacementTextRoundedRectHeight));
float x = (contentRect.size().width() / 2 - replacementTextRect.size().width() / 2) + contentRect.location().x();
float y = (contentRect.size().height() / 2 - replacementTextRect.size().height() / 2) + contentRect.location().y();
replacementTextRect.setLocation(FloatPoint(x, y));
indicatorRect = replacementTextRect;
// Expand the background rect to include the arrow, if it will be used.
if (includesArrow) {
arrowRect = indicatorRect;
arrowRect.setX(ceilf(arrowRect.maxX() + replacementArrowLeftMargin));
arrowRect.setWidth(arrowRect.height());
indicatorRect.unite(arrowRect);
}
return true;
}
LayoutRect RenderEmbeddedObject::unavailablePluginIndicatorBounds(const LayoutPoint& accumulatedOffset) const
{
FloatRect contentRect;
FloatRect indicatorRect;
FloatRect replacementTextRect;
FloatRect arrowRect;
FontCascade font;
TextRun run(emptyString());
float textWidth;
if (getReplacementTextGeometry(accumulatedOffset, contentRect, indicatorRect, replacementTextRect, arrowRect, font, run, textWidth))
return LayoutRect(indicatorRect);
return LayoutRect();
}
bool RenderEmbeddedObject::isReplacementObscured() const
{
// Return whether or not the replacement content for blocked plugins is accessible to the user.
// Check the opacity of each layer containing the element or its ancestors.
float opacity = 1.0;
for (RenderLayer* layer = enclosingLayer(); layer; layer = layer->parent()) {
opacity *= layer->renderer().style().opacity();
if (opacity < 0.1)
return true;
}
// Calculate the absolute rect for the blocked plugin replacement text.
IntRect absoluteBoundingBox = absoluteBoundingBoxRect();
LayoutPoint absoluteLocation(absoluteBoundingBox.location());
LayoutRect rect = unavailablePluginIndicatorBounds(absoluteLocation);
if (rect.isEmpty())
return true;
RenderView* rootRenderView = document().topDocument().renderView();
ASSERT(rootRenderView);
if (!rootRenderView)
return true;
IntRect rootViewRect = view().frameView().convertToRootView(snappedIntRect(rect));
HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::IgnoreClipping | HitTestRequest::DisallowShadowContent | HitTestRequest::AllowChildFrameContent);
HitTestResult result;
HitTestLocation location;
LayoutUnit x = rootViewRect.x();
LayoutUnit y = rootViewRect.y();
LayoutUnit width = rootViewRect.width();
LayoutUnit height = rootViewRect.height();
// Hit test the center and near the corners of the replacement text to ensure
// it is visible and is not masked by other elements.
bool hit = false;
location = LayoutPoint(x + width / 2, y + height / 2);
hit = rootRenderView->hitTest(request, location, result);
if (!hit || result.innerNode() != &frameOwnerElement())
return true;
location = LayoutPoint(x, y);
hit = rootRenderView->hitTest(request, location, result);
if (!hit || result.innerNode() != &frameOwnerElement())
return true;
location = LayoutPoint(x + width, y);
hit = rootRenderView->hitTest(request, location, result);
if (!hit || result.innerNode() != &frameOwnerElement())
return true;
location = LayoutPoint(x + width, y + height);
hit = rootRenderView->hitTest(request, location, result);
if (!hit || result.innerNode() != &frameOwnerElement())
return true;
location = LayoutPoint(x, y + height);
hit = rootRenderView->hitTest(request, location, result);
if (!hit || result.innerNode() != &frameOwnerElement())
return true;
return false;
}
void RenderEmbeddedObject::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
ASSERT(needsLayout());
LayoutSize oldSize = contentBoxRect().size();
updateLogicalWidth();
updateLogicalHeight();
RenderWidget::layout();
clearOverflow();
addVisualEffectOverflow();
updateLayerTransform();
bool wasMissingWidget = false;
if (!widget() && canHaveWidget()) {
wasMissingWidget = true;
view().frameView().addEmbeddedObjectToUpdate(*this);
}
clearNeedsLayout();
LayoutSize newSize = contentBoxRect().size();
if (!wasMissingWidget && newSize.width() >= oldSize.width() && newSize.height() >= oldSize.height()) {
HTMLFrameOwnerElement& element = frameOwnerElement();
if (is<HTMLPlugInImageElement>(element)) {
HTMLPlugInImageElement& plugInImageElement = downcast<HTMLPlugInImageElement>(element);
if (plugInImageElement.displayState() > HTMLPlugInElement::DisplayingSnapshot && plugInImageElement.snapshotDecision() == HTMLPlugInImageElement::MaySnapshotWhenResized) {
plugInImageElement.setNeedsCheckForSizeChange();
view().frameView().addEmbeddedObjectToUpdate(*this);
}
}
}
if (!canHaveChildren())
return;
// This code copied from RenderMedia::layout().
RenderObject* child = firstChild();
if (!child)
return;
auto& childBox = downcast<RenderBox>(*child);
if (newSize == oldSize && !childBox.needsLayout())
return;
// When calling layout() on a child node, a parent must either push a LayoutStateMaintainter, or
// instantiate LayoutStateDisabler. Since using a LayoutStateMaintainer is slightly more efficient,
// and this method will be called many times per second during playback, use a LayoutStateMaintainer:
LayoutStateMaintainer statePusher(view(), *this, locationOffset(), hasTransform() || hasReflection() || style().isFlippedBlocksWritingMode());
childBox.setLocation(LayoutPoint(borderLeft(), borderTop()) + LayoutSize(paddingLeft(), paddingTop()));
childBox.style().setHeight(Length(newSize.height(), Fixed));
childBox.style().setWidth(Length(newSize.width(), Fixed));
childBox.setNeedsLayout(MarkOnlyThis);
childBox.layout();
clearChildNeedsLayout();
statePusher.pop();
}
bool RenderEmbeddedObject::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
{
if (!RenderWidget::nodeAtPoint(request, result, locationInContainer, accumulatedOffset, hitTestAction))
return false;
if (!is<PluginViewBase>(widget()))
return true;
PluginViewBase& view = downcast<PluginViewBase>(*widget());
IntPoint roundedPoint = locationInContainer.roundedPoint();
if (Scrollbar* horizontalScrollbar = view.horizontalScrollbar()) {
if (horizontalScrollbar->shouldParticipateInHitTesting() && horizontalScrollbar->frameRect().contains(roundedPoint)) {
result.setScrollbar(horizontalScrollbar);
return true;
}
}
if (Scrollbar* verticalScrollbar = view.verticalScrollbar()) {
if (verticalScrollbar->shouldParticipateInHitTesting() && verticalScrollbar->frameRect().contains(roundedPoint)) {
result.setScrollbar(verticalScrollbar);
return true;
}
}
return true;
}
bool RenderEmbeddedObject::scroll(ScrollDirection direction, ScrollGranularity granularity, float, Element**, RenderBox*, const IntPoint&)
{
if (!is<PluginViewBase>(widget()))
return false;
return downcast<PluginViewBase>(*widget()).scroll(direction, granularity);
}
bool RenderEmbeddedObject::logicalScroll(ScrollLogicalDirection direction, ScrollGranularity granularity, float multiplier, Element** stopElement)
{
// Plugins don't expose a writing direction, so assuming horizontal LTR.
return scroll(logicalToPhysical(direction, true, false), granularity, multiplier, stopElement);
}
bool RenderEmbeddedObject::isInUnavailablePluginIndicator(const FloatPoint& point) const
{
FloatRect contentRect;
FloatRect indicatorRect;
FloatRect replacementTextRect;
FloatRect arrowRect;
FontCascade font;
TextRun run(emptyString());
float textWidth;
return getReplacementTextGeometry(IntPoint(), contentRect, indicatorRect, replacementTextRect, arrowRect, font, run, textWidth)
&& indicatorRect.contains(point);
}
bool RenderEmbeddedObject::isInUnavailablePluginIndicator(const MouseEvent& event) const
{
return isInUnavailablePluginIndicator(absoluteToLocal(event.absoluteLocation(), UseTransforms));
}
void RenderEmbeddedObject::handleUnavailablePluginIndicatorEvent(Event* event)
{
if (!shouldUnavailablePluginMessageBeButton(document(), m_pluginUnavailabilityReason))
return;
if (!is<MouseEvent>(*event))
return;
MouseEvent& mouseEvent = downcast<MouseEvent>(*event);
HTMLPlugInElement& element = downcast<HTMLPlugInElement>(frameOwnerElement());
if (mouseEvent.type() == eventNames().mousedownEvent && mouseEvent.button() == LeftButton) {
m_mouseDownWasInUnavailablePluginIndicator = isInUnavailablePluginIndicator(mouseEvent);
if (m_mouseDownWasInUnavailablePluginIndicator) {
frame().eventHandler().setCapturingMouseEventsElement(&element);
element.setIsCapturingMouseEvents(true);
setUnavailablePluginIndicatorIsPressed(true);
}
mouseEvent.setDefaultHandled();
}
if (mouseEvent.type() == eventNames().mouseupEvent && mouseEvent.button() == LeftButton) {
if (m_unavailablePluginIndicatorIsPressed) {
frame().eventHandler().setCapturingMouseEventsElement(nullptr);
element.setIsCapturingMouseEvents(false);
setUnavailablePluginIndicatorIsPressed(false);
}
if (m_mouseDownWasInUnavailablePluginIndicator && isInUnavailablePluginIndicator(mouseEvent)) {
if (Page* page = document().page())
page->chrome().client().unavailablePluginButtonClicked(&element, m_pluginUnavailabilityReason);
}
m_mouseDownWasInUnavailablePluginIndicator = false;
event->setDefaultHandled();
}
if (mouseEvent.type() == eventNames().mousemoveEvent) {
setUnavailablePluginIndicatorIsPressed(m_mouseDownWasInUnavailablePluginIndicator && isInUnavailablePluginIndicator(mouseEvent));
mouseEvent.setDefaultHandled();
}
}
CursorDirective RenderEmbeddedObject::getCursor(const LayoutPoint& point, Cursor& cursor) const
{
if (showsUnavailablePluginIndicator() && shouldUnavailablePluginMessageBeButton(document(), m_pluginUnavailabilityReason) && isInUnavailablePluginIndicator(point)) {
cursor = handCursor();
return SetCursor;
}
if (widget() && widget()->isPluginViewBase()) {
// A plug-in is responsible for setting the cursor when the pointer is over it.
return DoNotSetCursor;
}
return RenderWidget::getCursor(point, cursor);
}
bool RenderEmbeddedObject::canHaveChildren() const
{
if (isSnapshottedPlugIn())
return true;
return false;
}
}
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