1、Document::attach()
>> 创建RenderArena = adoptPtr(new RenderArena);
>> 创建RenderView：setRenderer(new (m_renderArena.get()) RenderView(this, view()));
>> TreeScope::attach();
2、detach()
>> 清除Cache对象：clearAXObjectCache();
>> 停止DOM对象：stopActiveDOMObjects();
>> 事件终止：m_eventQueue->cancelQueuedEvents();
>> 发送安静事件：documentWillBecomeInactive();
>> 关闭ScrollBar：
FrameView* view = m_frame->view();
if (view)
view->detachCustomScrollbars();
>> 开始不接受事件：ownerPage->chrome()->client()->needTouchEvents(false);
>> TreeScope::detach();
>> m_renderArena.clear();
>> unscheduleStyleRecalc(); 停止样式更新吗？
2、强行进行样式计算
recalcStyle(Force);
3、根据Node + RenderStyle => RenderObject对象
RenderObject* RenderObject::createObject(Node* node, RenderStyle* style)
>> Document* doc = node->document();
>> RenderArena* arena = doc->renderArena();
4、创建RenderObject
>>PassRefPtr<ChildType> HTMLConstructionSite::attach(ContainerNode* rawParent, PassRefPtr<ChildType> prpChild)
>>void Element::attach()
>>NodeRendererFactory(this).createRendererIfNeeded();
>>RenderObject* newRenderer = createRendererAndStyle();
>>RenderObject* HTMLElement::createRenderer(RenderArena* arena, RenderStyle* style)
>>if (hasLocalName(wbrTag))
return new (arena) RenderWordBreak(this);
return RenderObject::createObject(this, style);
>>RenderObject* RenderObject::createObject(Node* node, RenderStyle* style)
5、特殊的几个依靠标签名，大部分依赖于RenderStyle::display()属性进行创建~
6、RenderStyle的数据内容
style->contentData()
7、<img>标签设ImageResource对象。
image->setImageResource(RenderImageResource::create());
>> RenderImageResource::RenderImageResource()
8、标签的解析处理
case HTMLToken::StartTag:
processStartTag(token);
break;
9、RenderThemeQt的创建时机：
>>QWebPage构造
>>QWebPagePrivate构造函数
>>Page构造函数
>>Chrome对象、SelectionController、FocusController
DragController、ContextMenuController、InspectorController
GeolocationController、DeviceMotionController、DeviceOrientationController
MediaStreamController、Settings、ProgressTracker
BackForwardController、RenderTheme::themeForPage
10、浏览器的设计
>>个性化的交互方式（select标签效果）
>>事件特性（摇杆等操作）
11、RenderThemeQt的执行内容
>>一个主题是为一个Page对象所定制的，而非一个Frame。
>>创建样式 m_fallbackStyle = QStyleFactory::create(QLatin1String("windows"));
12、iframe的创建过程
HTMLIFRrameElement -> RenderIFrame -> RenderFrameBase -> RenderPart -> RenderWidget -> RenderReplaced -> RenderBox
13、RenderObject 与 GraphicsContext的教诲关系
>> void RenderBoxModelObject::paintFillLayerExtended
>> 业务细节调用GraphicsContext的API内容
>> void GraphicsContext::fillRoundedRect
14、QWevView事件触发
>>其他事件后->更新->paintEvent()操作
>>QWebView::paintEvent()
>>
>>ScrollView::paintScrollBars() -> ScrollBar::paint() -> ScrollBarThemeQt::paint()
>>创建StylePainter对象 StylePainter p(this, graphicsContext);
>>
15、上下文就是所谓的QPainter
painter = static_cast<QPainter*>(context->platformContext());
16、<select>
HTMLSelectElement::createRenderer() -> return new (arena) RenderMenuList(this);
RenderFlexibleBox
17、
>> void RenderObject::setAnimatableStyle(PassRefPtr<RenderStyle> style)
if (!isText() && style)
setStyle(animation()->updateAnimations(this, style.get()));
else
setStyle(style);
>> styleWillChange(diff, style.get());//设置样式之后的结果
>> StyleDifference updatedDiff = adjustStyleDifference(diff, contextSensitiveProperties);
>> Style设定后决定是否需要layout或是重绘
>> 如果字体发生改变，则需要更新OptionWidth
if (fontChanged)
updateOptionsWidth();
>>取出SelectElement的itemList成员列表
const Vector<Element*>& listItems = toSelectElement(static_cast<Element*>(node()))->listItems();
Element* element = listItems[i];
OptionElement* optionElement = toOptionElement(element);
11、SelectElement
SelectElement* select = toSelectElement(static_cast<Element*>(node()));
12、设置String注意清空strip效果
setText(text.stripWhiteSpace());
>>设置Text之后就立刻调用addChild()
void RenderMenuList::addChild(RenderObject* newChild, RenderObject* beforeChild)
13、select标签也是属于form内部的吗？
void HTMLFormControlElement::attach()
14、点击select标签的显示效果参见(showPopup函数)
void RenderMenuList::showPopup()
15、创建popup对象（为RenderObject创建popup对象）
m_popup = document()->page()->chrome()->createPopupMenu(this);
PassRefPtr<PopupMenu> Chrome::createPopupMenu(PopupMenuClient* client) const
{
return m_client->createPopupMenu(client);
}
Source/WebKit/qt/WebCoreSupport/ChromeClientQt.cpp
PassRefPtr<PopupMenu> ChromeClientQt::createPopupMenu(PopupMenuClient* client) const
{
return adoptRef(new PopupMenuQt(client, this));
}
PopupMenuQt->show(){
>>PassOwnPtr<QWebSelectMethod> ChromeClientQt::createSelectPopup() const
>>OwnPtr<QWebSelectMethod> m_popup;
>>检测是否有QT_NO_COMBOBOX宏
>>
}
155、QPlatformPlugin::createSelectInputMethod() 创建selectInupt方法
>> QWebKitPlatformPlugin* QtPlatformPlugin::plugin()
>> load(pluginPath) ?? 是采用插件的形式？还是重载QWebPage的方式
>>Source/WebKit/qt/examples/platformplugin/WebPlugin.cpp ??
16、SelectElement接受menuList的默认响应事件
>> void SelectElement::menuListDefaultEventHandler
>> 谁响应事件？谁负责绘制？谁负责存储数据？
17、PopupMenuClient的实现
>valueChanged、selectionChanged
>itemText、itemLabel、itemIcon、itemToolTip、itemAccessText
>itemIsEnabled、itemStyle、MenuStyle
>clientInsetLeft、clientInsetRight
>listSize、selectedIndex
>POPiupDidHide
>itemIsSeparator、isLabel、isSelected
>sholdPopOver
>hostwindow、FontSelector
>createScrollbar
21、Chrome、ChromeClinet负责内容
>支持全屏？进入全屏？退出全屏？要求全屏？
>允许突然终止、不允许突然终止
>是否有OpenPopup？创建PopupMenu、创建SearchPOPupMenu？
Source/Webkit/qt|wince|mac|../WebCoreSupport/ChromeClientQt.cpp
>
22、交由QWebPage进行实现的Popup效果
QWebSelectMethod *QWebPagePrivate::createSelectPopup()
{
return new QtFallbackWebPopup(this);
}
>> m_combo = new QtWebComboBox();
QComboBox()
>> populate(data);
>> m_combo->showPopupAtCursorPosition();
