third_party/WebKit/Source/core/layout/LayoutEmbeddedObject.cpp

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
   4  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
   5  * Copyright (C) 2004, 2005, 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #include "config.h"
  25 #include "core/layout/LayoutEmbeddedObject.h"
  26
  27 #include "core/CSSValueKeywords.h"
  28 #include "core/HTMLNames.h"
  29 #include "core/frame/LocalFrame.h"
  30 #include "core/html/HTMLIFrameElement.h"
  31 #include "core/html/HTMLPlugInElement.h"
  32 #include "core/layout/LayoutAnalyzer.h"
  33 #include "core/layout/LayoutView.h"
  34 #include "core/page/Page.h"
  35 #include "core/paint/EmbeddedObjectPainter.h"
  36 #include "core/plugins/PluginView.h"
  37 #include "platform/text/PlatformLocale.h"
  38
  39 namespace blink {
  40
  41 using namespace HTMLNames;
  42
  43 LayoutEmbeddedObject::LayoutEmbeddedObject(Element* element)
  44     : LayoutPart(element)
  45     , m_showsUnavailablePluginIndicator(false)
  46 {
  47     view()->frameView()->setIsVisuallyNonEmpty();
  48 }
  49
  50 LayoutEmbeddedObject::~LayoutEmbeddedObject()
  51 {
  52 }
  53
  54 DeprecatedPaintLayerType LayoutEmbeddedObject::layerTypeRequired() const
  55 {
  56     // This can't just use LayoutPart::layerTypeRequired, because DeprecatedPaintLayerCompositor
  57     // doesn't loop through LayoutEmbeddedObjects the way it does frames in order
  58     // to update the self painting bit on their Layer.
  59     // Also, unlike iframes, embeds don't used the usesCompositing bit on LayoutView
  60     // in requiresAcceleratedCompositing.
  61     if (requiresAcceleratedCompositing())
  62         return NormalDeprecatedPaintLayer;
  63     return LayoutPart::layerTypeRequired();
  64 }
  65
  66 static String localizedUnavailablePluginReplacementText(Node* node, LayoutEmbeddedObject::PluginUnavailabilityReason pluginUnavailabilityReason)
  67 {
  68     Locale& locale = node ? toElement(node)->locale() : Locale::defaultLocale();
  69     switch (pluginUnavailabilityReason) {
  70     case LayoutEmbeddedObject::PluginMissing:
  71         return locale.queryString(WebLocalizedString::MissingPluginText);
  72     case LayoutEmbeddedObject::PluginBlockedByContentSecurityPolicy:
  73         return locale.queryString(WebLocalizedString::BlockedPluginText);
  74     }
  75
  76     ASSERT_NOT_REACHED();
  77     return String();
  78 }
  79
  80 void LayoutEmbeddedObject::setPluginUnavailabilityReason(PluginUnavailabilityReason pluginUnavailabilityReason)
  81 {
  82     ASSERT(!m_showsUnavailablePluginIndicator);
  83     m_showsUnavailablePluginIndicator = true;
  84     m_pluginUnavailabilityReason = pluginUnavailabilityReason;
  85
  86     m_unavailablePluginReplacementText = localizedUnavailablePluginReplacementText(node(), pluginUnavailabilityReason);
  87 }
  88
  89 bool LayoutEmbeddedObject::showsUnavailablePluginIndicator() const
  90 {
  91     return m_showsUnavailablePluginIndicator;
  92 }
  93
  94 void LayoutEmbeddedObject::paintContents(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
  95 {
  96     Element* element = toElement(node());
  97     if (!isHTMLPlugInElement(element))
  98         return;
  99
 100     LayoutPart::paintContents(paintInfo, paintOffset);
 101 }
 102
 103 void LayoutEmbeddedObject::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 104 {
 105     if (showsUnavailablePluginIndicator()) {
 106         LayoutReplaced::paint(paintInfo, paintOffset);
 107         return;
 108     }
 109
 110     LayoutPart::paint(paintInfo, paintOffset);
 111 }
 112
 113 void LayoutEmbeddedObject::paintReplaced(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 114 {
 115     EmbeddedObjectPainter(*this).paintReplaced(paintInfo, paintOffset);
 116 }
 117
 118 void LayoutEmbeddedObject::layout()
 119 {
 120     ASSERT(needsLayout());
 121     LayoutAnalyzer::Scope analyzer(*this);
 122
 123     updateLogicalWidth();
 124     updateLogicalHeight();
 125
 126     m_overflow.clear();
 127     addVisualEffectOverflow();
 128
 129     updateLayerTransformAfterLayout();
 130
 131     Widget* widget = this->widget();
 132     if (widget) {
 133         if (widget->isPluginView())
 134             toPluginView(widget)->layoutIfNeeded();
 135     } else if (frameView()) {
 136         frameView()->addPartToUpdate(*this);
 137     }
 138
 139     clearNeedsLayout();
 140 }
 141
 142 PaintInvalidationReason LayoutEmbeddedObject::invalidatePaintIfNeeded(
 143     PaintInvalidationState& paintInvalidationState, const LayoutBoxModelObject& newPaintInvalidationContainer)
 144 {
 145     PaintInvalidationReason reason =
 146         LayoutPart::invalidatePaintIfNeeded(paintInvalidationState, newPaintInvalidationContainer);
 147
 148     Widget* widget = this->widget();
 149     if (widget && widget->isPluginView())
 150         toPluginView(widget)->invalidatePaintIfNeeded();
 151
 152     return reason;
 153 }
 154
 155 ScrollResultOneDimensional LayoutEmbeddedObject::scroll(ScrollDirectionPhysical direction, ScrollGranularity granularity, float)
 156 {
 157     return ScrollResultOneDimensional(false);
 158 }
 159
 160 CompositingReasons LayoutEmbeddedObject::additionalCompositingReasons() const
 161 {
 162     if (requiresAcceleratedCompositing())
 163         return CompositingReasonPlugin;
 164     return CompositingReasonNone;
 165 }
 166
 167 LayoutBox* LayoutEmbeddedObject::embeddedContentBox() const
 168 {
 169     if (!node() || !widget() || !widget()->isFrameView())
 170         return nullptr;
 171     return toFrameView(widget())->embeddedContentBox();
 172 }
 173
 174 } // namespace blink