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一些特殊的Webkit Idl属性
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互联网集市收集整理的这篇技术教程文章主要介绍了一些特殊的Webkit Idl属性，小编现在分享给大家，供广大互联网技能从业者学习和参考。文章包含2053字，纯文字阅读大概需要3分钟。
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Conditional= CONDITIONALNAME
- Wraps the generated binding code in "#if ENABLE(CONDITIONALNAME)". Typically used to allow turning off features on certain platforms (or to disable new features while they are under development).
- CustomMarkFunction
- Adds a "virtual void mark()" declaration to the generated header file for the binding class. This allows a custom binding implementation to provide their own mark() function in WebCore/bindings/js/JSClassNameCustom.cpp for doing custom handling of garbage collection.
- CustomToJS
- 不为绑定类产生 toJS（）函数. 这允许实现者用自己的toJS（）函数为给定的实现类创建正确的封装类. 当你的类有自己的继承关系，这就会有用：当给出一个基类的实例，自定义的toJS()实现返回派生类的封装，注意不是基类的封装。
- DelegatingGetOwnPropertySlot
- 用于给某个类的实例定义自己的属性的查找方法. 例子就是HTML的 History对象，他需要限制某个属性是跨域可见(visible cross-domain)，或者WorkerContext的例子，它想在自己的原型(protype)开始查找属性之前，把查找方法委托给全局对象.
- ExtendsDOMGlobalObject
- Does not expose the object prototype externally. Also uses a self-reference internally whenever it needs to access the JSDOMGlobalObject.
- GenerateConstructor
- 产生使得类可以被外部实例化的代码
- GenerateNativeConverter
- Generates a helper function of the form ClassName* impl() { return static_cast<ClassName>(m_impl); }. Useful when working with a class hierarchy in the binding code, where the base m_impl member is defined to be the base type, not the appropriate derived type.
- LegacyParent=ParentClass
- Allows setting the base class for the generated binding. Otherwise, the base class would be set to DOMObject or the explicitly specified parent class in the interface definition.
- NoStaticTables
- Sharing a single static prototype table only works when a class is guaranteed to be accessed from a single heap, because the lookup code expects the key (attribute name) to have the same address across all instances of the object. For interfaces that are exposed to Workers, a single static table won‘t work because a given string used to look up a property on the object will lie at a different address in each heap.
See ?WebKitIDL for detailed documentation.
原文：http://blog.csdn.net/lichwei1983/article/details/43875973
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