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use super::*;
/// A wrapper around the asynchronous NBGL nbgl_useCaseReview C API binding.
/// Used to display transaction review screens.
pub struct NbglReview<'a> {
title: CString,
subtitle: CString,
finish_title: CString,
glyph: Option<&'a NbglGlyph<'a>>,
tx_type: TransactionType,
blind: bool,
light: bool,
}
impl SyncNBGL for NbglReview<'_> {}
impl<'a> NbglReview<'a> {
pub fn new() -> NbglReview<'a> {
NbglReview {
title: CString::default(),
subtitle: CString::default(),
finish_title: CString::default(),
glyph: None,
tx_type: TransactionType::Transaction,
blind: false,
light: false,
}
}
pub fn tx_type(self, tx_type: TransactionType) -> NbglReview<'a> {
NbglReview { tx_type, ..self }
}
pub fn blind(self) -> NbglReview<'a> {
NbglReview {
blind: true,
..self
}
}
pub fn light(self) -> NbglReview<'a> {
NbglReview {
light: true,
..self
}
}
pub fn titles(
self,
title: &'a str,
subtitle: &'a str,
finish_title: &'a str,
) -> NbglReview<'a> {
NbglReview {
title: CString::new(title).unwrap(),
subtitle: CString::new(subtitle).unwrap(),
finish_title: CString::new(finish_title).unwrap(),
..self
}
}
pub fn glyph(self, glyph: &'a NbglGlyph) -> NbglReview<'a> {
NbglReview {
glyph: Some(glyph),
..self
}
}
pub fn show(&self, fields: &[Field]) -> bool {
unsafe {
let v: Vec<CField> = fields
.iter()
.map(|f| CField {
name: CString::new(f.name).unwrap(),
value: CString::new(f.value).unwrap(),
})
.collect();
// Fill the tag_value_array with the fields converted to nbgl_contentTagValue_t
let mut tag_value_array: Vec<nbgl_contentTagValue_t> = Vec::new();
for field in v.iter() {
let val = nbgl_contentTagValue_t {
item: field.name.as_ptr() as *const i8,
value: field.value.as_ptr() as *const i8,
..Default::default()
};
tag_value_array.push(val);
}
// Create the tag_value_list with the tag_value_array.
let tag_value_list = nbgl_contentTagValueList_t {
pairs: tag_value_array.as_ptr() as *const nbgl_contentTagValue_t,
nbPairs: fields.len() as u8,
..Default::default()
};
let icon: nbgl_icon_details_t = match self.glyph {
Some(g) => g.into(),
None => nbgl_icon_details_t::default(),
};
// Show the review on the device.
self.ux_sync_init();
match self.blind {
true => {
nbgl_useCaseReviewBlindSigning(
self.tx_type.to_c_type(false),
&tag_value_list as *const nbgl_contentTagValueList_t,
&icon as *const nbgl_icon_details_t,
match self.title.is_empty() {
true => core::ptr::null(),
false => self.title.as_ptr() as *const c_char,
},
match self.subtitle.is_empty() {
true => core::ptr::null(),
false => self.subtitle.as_ptr() as *const c_char,
},
match self.finish_title.is_empty() {
true => core::ptr::null(),
false => self.finish_title.as_ptr() as *const c_char,
},
core::ptr::null(),
Some(choice_callback),
);
}
false => {
if self.light {
nbgl_useCaseReviewLight(
self.tx_type.to_c_type(false),
&tag_value_list as *const nbgl_contentTagValueList_t,
&icon as *const nbgl_icon_details_t,
match self.title.is_empty() {
true => core::ptr::null(),
false => self.title.as_ptr() as *const c_char,
},
match self.subtitle.is_empty() {
true => core::ptr::null(),
false => self.subtitle.as_ptr() as *const c_char,
},
match self.finish_title.is_empty() {
true => core::ptr::null(),
false => self.finish_title.as_ptr() as *const c_char,
},
Some(choice_callback),
);
} else {
nbgl_useCaseReview(
self.tx_type.to_c_type(false),
&tag_value_list as *const nbgl_contentTagValueList_t,
&icon as *const nbgl_icon_details_t,
match self.title.is_empty() {
true => core::ptr::null(),
false => self.title.as_ptr() as *const c_char,
},
match self.subtitle.is_empty() {
true => core::ptr::null(),
false => self.subtitle.as_ptr() as *const c_char,
},
match self.finish_title.is_empty() {
true => core::ptr::null(),
false => self.finish_title.as_ptr() as *const c_char,
},
Some(choice_callback),
);
}
}
}
let sync_ret = self.ux_sync_wait(false);
// Return true if the user approved the transaction, false otherwise.
match sync_ret {
SyncNbgl::UxSyncRetApproved => {
return true;
}
_ => {
return false;
}
}
}
}
}