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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  * Copyright (C) 2003, 2006, 2009 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #include "config.h"
     23 #include "RenderApplet.h"
     24 
     25 #include "Frame.h"
     26 #include "HTMLAppletElement.h"
     27 #include "HTMLNames.h"
     28 #include "HTMLParamElement.h"
     29 #include "PluginViewBase.h"
     30 #include "Widget.h"
     31 
     32 namespace WebCore {
     33 
     34 using namespace HTMLNames;
     35 
     36 RenderApplet::RenderApplet(HTMLAppletElement* applet, const HashMap<String, String>& args)
     37     : RenderWidget(applet)
     38     , m_args(args)
     39 {
     40     setInline(true);
     41 }
     42 
     43 RenderApplet::~RenderApplet()
     44 {
     45 }
     46 
     47 IntSize RenderApplet::intrinsicSize() const
     48 {
     49     // FIXME: This doesn't make sense. We can't just start returning
     50     // a different size once we've created the widget and expect
     51     // layout and sizing to be correct. We should remove this and
     52     // pass the appropriate intrinsic size in the constructor.
     53     return widget() ? IntSize(50, 50) : IntSize(150, 150);
     54 }
     55 
     56 void RenderApplet::createWidgetIfNecessary()
     57 {
     58     HTMLAppletElement* element = static_cast<HTMLAppletElement*>(node());
     59     if (widget() || !element->isFinishedParsingChildren())
     60         return;
     61 
     62     // FIXME: Java applets can't be resized (this is a bug in Apple's Java implementation).
     63     // In order to work around this problem and have a correct size from the start, we will
     64     // use fixed widths/heights from the style system when we can, since the widget might
     65     // not have an accurate m_width/m_height.
     66     int contentWidth = style()->width().isFixed() ? style()->width().value() :
     67         width() - borderAndPaddingWidth();
     68     int contentHeight = style()->height().isFixed() ? style()->height().value() :
     69         height() - borderAndPaddingHeight();
     70     for (Node* child = element->firstChild(); child; child = child->nextSibling()) {
     71         if (child->hasTagName(paramTag)) {
     72             HTMLParamElement* p = static_cast<HTMLParamElement*>(child);
     73             if (!p->name().isEmpty())
     74                 m_args.set(p->name(), p->value());
     75         }
     76     }
     77 
     78     Frame* frame = this->frame();
     79     ASSERT(frame);
     80     setWidget(frame->loader()->subframeLoader()->createJavaAppletWidget(IntSize(contentWidth, contentHeight), element, m_args));
     81 }
     82 
     83 void RenderApplet::layout()
     84 {
     85     ASSERT(needsLayout());
     86 
     87     computeLogicalWidth();
     88     computeLogicalHeight();
     89 
     90     // The applet's widget gets created lazily upon first layout.
     91     createWidgetIfNecessary();
     92     setNeedsLayout(false);
     93 }
     94 
     95 #if USE(ACCELERATED_COMPOSITING)
     96 bool RenderApplet::requiresLayer() const
     97 {
     98     if (RenderWidget::requiresLayer())
     99         return true;
    100 
    101     return allowsAcceleratedCompositing();
    102 }
    103 
    104 bool RenderApplet::allowsAcceleratedCompositing() const
    105 {
    106     return widget() && widget()->isPluginViewBase() && static_cast<PluginViewBase*>(widget())->platformLayer();
    107 }
    108 #endif
    109 
    110 } // namespace WebCore
    111