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// // DO NOT EDIT. THIS FILE IS GENERATED FROM ../../../dist/idl/nsITextScroll.idl // /// `interface nsITextScroll : nsISupports` /// /// ```text /// /** /// * The nsITextScroll is an interface that can be implemented by a control that /// * supports text scrolling. /// */ /// ``` /// // The actual type definition for the interface. This struct has methods // declared on it which will call through its vtable. You never want to pass // this type around by value, always pass it behind a reference. #[repr(C)] pub struct nsITextScroll { vtable: *const nsITextScrollVTable, /// This field is a phantomdata to ensure that the VTable type and any /// struct containing it is not safe to send across threads, as XPCOM is /// generally not threadsafe. /// /// XPCOM interfaces in general are not safe to send across threads. __nosync: ::std::marker::PhantomData<::std::rc::Rc<u8>>, } // Implementing XpCom for an interface exposes its IID, which allows for easy // use of the `.query_interface<T>` helper method. This also defines that // method for nsITextScroll. unsafe impl XpCom for nsITextScroll { const IID: nsIID = nsID(0x067b28a0, 0x877f, 0x11d3, [0xaf, 0x7e, 0x00, 0xa0, 0x24, 0xff, 0xc0, 0x8c]); } // We need to implement the RefCounted trait so we can be used with `RefPtr`. // This trait teaches `RefPtr` how to manage our memory. unsafe impl RefCounted for nsITextScroll { #[inline] unsafe fn addref(&self) { self.AddRef(); } #[inline] unsafe fn release(&self) { self.Release(); } } // This trait is implemented on all types which can be coerced to from nsITextScroll. // It is used in the implementation of `fn coerce<T>`. We hide it from the // documentation, because it clutters it up a lot. #[doc(hidden)] pub trait nsITextScrollCoerce { /// Cheaply cast a value of this type from a `nsITextScroll`. fn coerce_from(v: &nsITextScroll) -> &Self; } // The trivial implementation: We can obviously coerce ourselves to ourselves. impl nsITextScrollCoerce for nsITextScroll { #[inline] fn coerce_from(v: &nsITextScroll) -> &Self { v } } impl nsITextScroll { /// Cast this `nsITextScroll` to one of its base interfaces. #[inline] pub fn coerce<T: nsITextScrollCoerce>(&self) -> &T { T::coerce_from(self) } } // Every interface struct type implements `Deref` to its base interface. This // causes methods on the base interfaces to be directly avaliable on the // object. For example, you can call `.AddRef` or `.QueryInterface` directly // on any interface which inherits from `nsISupports`. impl ::std::ops::Deref for nsITextScroll { type Target = nsISupports; #[inline] fn deref(&self) -> &nsISupports { unsafe { ::std::mem::transmute(self) } } } // Ensure we can use .coerce() to cast to our base types as well. Any type which // our base interface can coerce from should be coercable from us as well. impl<T: nsISupportsCoerce> nsITextScrollCoerce for T { #[inline] fn coerce_from(v: &nsITextScroll) -> &Self { T::coerce_from(v) } } // This struct represents the interface's VTable. A pointer to a statically // allocated version of this struct is at the beginning of every nsITextScroll // object. It contains one pointer field for each method in the interface. In // the case where we can't generate a binding for a method, we include a void // pointer. #[doc(hidden)] #[repr(C)] pub struct nsITextScrollVTable { /// We need to include the members from the base interface's vtable at the start /// of the VTable definition. pub __base: nsISupportsVTable, /* void scrollByLines (in long numLines); */ pub ScrollByLines: unsafe extern "system" fn (this: *const nsITextScroll, numLines: libc::int32_t) -> nsresult, /* void scrollByPages (in long numPages); */ pub ScrollByPages: unsafe extern "system" fn (this: *const nsITextScroll, numPages: libc::int32_t) -> nsresult, } // The implementations of the function wrappers which are exposed to rust code. // Call these methods rather than manually calling through the VTable struct. impl nsITextScroll { /// ```text /// /** /// * Scroll the view up or down by aNumLines lines. positive /// * values move down in the view. Prevents scrolling off the /// * end of the view. /// * @param numLines number of lines to scroll the view by /// */ /// ``` /// /// `void scrollByLines (in long numLines);` #[inline] pub unsafe fn ScrollByLines(&self, numLines: libc::int32_t) -> nsresult { ((*self.vtable).ScrollByLines)(self, numLines) } /// ```text /// /** /// * Scroll the view up or down by numPages pages. a page /// * is considered to be the amount displayed by the clip view. /// * positive values move down in the view. Prevents scrolling /// * off the end of the view. /// * @param numPages number of pages to scroll the view by /// */ /// ``` /// /// `void scrollByPages (in long numPages);` #[inline] pub unsafe fn ScrollByPages(&self, numPages: libc::int32_t) -> nsresult { ((*self.vtable).ScrollByPages)(self, numPages) } }