1 files changed, 266 insertions, 0 deletions
diff --git a/WebCore/rendering/RenderWidget.cpp b/WebCore/rendering/RenderWidget.cpp
new file mode 100644
index 0000000..b0aee4b
--- /dev/null
+++ b/WebCore/rendering/RenderWidget.cpp
@@ -0,0 +1,266 @@
+/**
+ * This file is part of the HTML widget for KDE.
+ *
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2000 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2004, 2006 Apple Computer, Inc.
+ *
+ * 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 "RenderWidget.h"
+
+#include "AnimationController.h"
+#include "AXObjectCache.h"
+#include "Document.h"
+#include "Element.h"
+#include "Event.h"
+#include "EventNames.h"
+#include "FrameView.h"
+#include "GraphicsContext.h"
+#include "RenderLayer.h"
+#include "RenderView.h"
+
+using namespace std;
+
+namespace WebCore {
+
+using namespace EventNames;
+
+static HashMap<const Widget*, RenderWidget*>& widgetRendererMap()
+{
+    static HashMap<const Widget*, RenderWidget*>* staticWidgetRendererMap = new HashMap<const Widget*, RenderWidget*>;
+    return *staticWidgetRendererMap;
+}
+
+RenderWidget::RenderWidget(Node* node)
+      : RenderReplaced(node)
+      , m_widget(0)
+      , m_refCount(0)
+{
+    // a replaced element doesn't support being anonymous
+    ASSERT(node);
+    m_view = node->document()->view();
+
+    view()->addWidget(this);
+
+    // Reference counting is used to prevent the widget from being
+    // destroyed while inside the Widget code, which might not be
+    // able to handle that.
+    ref();
+}
+
+void RenderWidget::destroy()
+{
+    // We can't call the base class's destroy because we don't
+    // want to unconditionally delete ourselves (we're ref-counted).
+    // So the code below includes copied and pasted contents of
+    // both RenderBox::destroy() and RenderObject::destroy().
+    // Fix originally made for <rdar://problem/4228818>.
+    animationController()->cancelImplicitAnimations(this);
+
+    if (RenderView* v = view())
+        v->removeWidget(this);
+
+    document()->axObjectCache()->remove(this);
+
+    remove();
+
+    if (m_widget) {
+        if (m_view)
+            m_view->removeChild(m_widget);
+        widgetRendererMap().remove(m_widget);
+    }
+    
+    // removes from override size map
+    if (hasOverrideSize())
+        setOverrideSize(-1);
+
+    RenderLayer* layer = m_layer;
+    RenderArena* arena = renderArena();
+
+    if (layer)
+        layer->clearClipRect();
+
+    setNode(0);
+    deref(arena);
+
+    if (layer)
+        layer->destroy(arena);
+}
+
+RenderWidget::~RenderWidget()
+{
+    ASSERT(m_refCount <= 0);
+    deleteWidget();
+}
+
+void RenderWidget::resizeWidget(Widget* widget, int w, int h)
+{
+    if (element() && (widget->width() != w || widget->height() != h)) {
+        RenderArena* arena = ref();
+        element()->ref();
+        widget->resize(w, h);
+        element()->deref();
+        deref(arena);
+    }
+}
+
+void RenderWidget::setWidget(Widget* widget)
+{
+    if (widget != m_widget) {
+        if (m_widget) {
+            // removeFromParent is a no-op on Mac.
+            m_widget->removeFromParent();
+            widgetRendererMap().remove(m_widget);
+            deleteWidget();
+        }
+        m_widget = widget;
+        if (m_widget) {
+            widgetRendererMap().add(m_widget, this);
+            // if we've already received a layout, apply the calculated space to the
+            // widget immediately, but we have to have really been full constructed (with a non-null
+            // style pointer).
+            if (!needsLayout() && style())
+                resizeWidget(m_widget,
+                    m_width - borderLeft() - borderRight() - paddingLeft() - paddingRight(),
+                    m_height - borderTop() - borderBottom() - paddingTop() - paddingBottom());
+            if (style()) {
+                if (style()->visibility() != VISIBLE)
+                    m_widget->hide();
+                else
+                    m_widget->show();
+            }
+            m_view->addChild(m_widget);
+        }
+    }
+}
+
+void RenderWidget::layout()
+{
+    ASSERT(needsLayout());
+
+    setNeedsLayout(false);
+}
+
+void RenderWidget::setStyle(RenderStyle* newStyle)
+{
+    RenderReplaced::setStyle(newStyle);
+    if (m_widget) {
+        if (style()->visibility() != VISIBLE)
+            m_widget->hide();
+        else
+            m_widget->show();
+    }
+}
+
+void RenderWidget::paint(PaintInfo& paintInfo, int tx, int ty)
+{
+    if (!shouldPaint(paintInfo, tx, ty))
+        return;
+
+    tx += m_x;
+    ty += m_y;
+
+    if (hasBoxDecorations() && paintInfo.phase != PaintPhaseOutline && paintInfo.phase != PaintPhaseSelfOutline)
+        paintBoxDecorations(paintInfo, tx, ty);
+
+    if (!m_view || paintInfo.phase != PaintPhaseForeground || style()->visibility() != VISIBLE)
+        return;
+
+#if PLATFORM(MAC)
+    if (style()->highlight() != nullAtom && !paintInfo.context->paintingDisabled())
+        paintCustomHighlight(tx - m_x, ty - m_y, style()->highlight(), true);
+#endif
+
+    if (m_widget) {
+        // Move the widget if necessary.  We normally move and resize widgets during layout, but sometimes
+        // widgets can move without layout occurring (most notably when you scroll a document that
+        // contains fixed positioned elements).
+        m_widget->move(tx + borderLeft() + paddingLeft(), ty + borderTop() + paddingTop());
+
+        // Tell the widget to paint now.  This is the only time the widget is allowed
+        // to paint itself.  That way it will composite properly with z-indexed layers.
+        m_widget->paint(paintInfo.context, paintInfo.rect);
+    }
+
+    // Paint a partially transparent wash over selected widgets.
+    if (isSelected() && !document()->printing())
+        paintInfo.context->fillRect(selectionRect(), selectionBackgroundColor());
+}
+
+void RenderWidget::deref(RenderArena *arena)
+{
+    if (--m_refCount <= 0)
+        arenaDelete(arena, this);
+}
+
+void RenderWidget::updateWidgetPosition()
+{
+    if (!m_widget)
+        return;
+
+    int x;
+    int y;
+    absolutePosition(x, y);
+    x += borderLeft() + paddingLeft();
+    y += borderTop() + paddingTop();
+
+    int width = m_width - borderLeft() - borderRight() - paddingLeft() - paddingRight();
+    int height = m_height - borderTop() - borderBottom() - paddingTop() - paddingBottom();
+
+    IntRect newBounds(x, y, width, height);
+    IntRect oldBounds(m_widget->frameGeometry());
+    if (newBounds != oldBounds) {
+        // The widget changed positions.  Update the frame geometry.
+        if (checkForRepaintDuringLayout()) {
+            RenderView* v = view();
+            if (!v->printing()) {
+                v->repaintViewRectangle(oldBounds);
+                v->repaintViewRectangle(newBounds);
+            }
+        }
+
+        RenderArena* arena = ref();
+        element()->ref();
+        m_widget->setFrameGeometry(newBounds);
+        element()->deref();
+        deref(arena);
+    }
+}
+
+void RenderWidget::setSelectionState(SelectionState state)
+{
+    if (selectionState() != state) {
+        RenderReplaced::setSelectionState(state);
+        if (m_widget)
+            m_widget->setIsSelected(isSelected());
+    }
+}
+
+void RenderWidget::deleteWidget()
+{
+    delete m_widget;
+}
+
+RenderWidget* RenderWidget::find(const Widget* widget)
+{
+    return widgetRendererMap().get(widget);
+}
+
+} // namespace WebCore