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add check for lines with hyperlinks

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This commit is contained in:
Wez Furlong 2018-08-05 09:46:42 -07:00
parent 12db6e4629
commit d7943681de
1 changed files with 16 additions and 1 deletions
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17
termwiz/src/surface/line.rs
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@ -10,7 +10,7 @@ bitflags! {
/// The contents of the Line have changed and cached or
/// derived data will need to be reassessed.
const DIRTY = 1<<0;
/// The line contains 1+ cells with hyperlinks set
/// The line contains 1+ cells with explicit hyperlinks set
const HAS_HYPERLINK = 1<<1;
/// true if we have scanned for implicit hyperlinks
const SCANNED_IMPLICIT_HYPERLINKS = 1<<2;
@ -99,6 +99,10 @@ impl Line {
return;
}
// FIXME: let's build a string and a byte-to-cell map here, and
// use this as an opportunity to rebuild HAS_HYPERLINK, skip matching
// cells with existing non-implicit hyperlinks, and avoid matching
// text with zero-width cells.
let line = self.as_str();
self.bits |= LineBits::SCANNED_IMPLICIT_HYPERLINKS;
self.bits &= !LineBits::HAS_IMPLICIT_HYPERLINKS;
@ -125,6 +129,13 @@ impl Line {
}
}
/// Returns true if the line contains a hyperlink
#[inline]
pub fn has_hyperlink(&self) -> bool {
(self.bits & (LineBits::HAS_HYPERLINK | LineBits::HAS_IMPLICIT_HYPERLINKS))
!= LineBits::NONE
}
/// Recompose line into the corresponding utf8 string.
pub fn as_str(&self) -> String {
let mut s = String::new();
@ -145,6 +156,10 @@ impl Line {
pub fn set_cell(&mut self, idx: usize, cell: Cell) {
self.invalidate_implicit_hyperlinks();
self.bits |= LineBits::DIRTY;
if cell.attrs().hyperlink.is_some() {
self.bits |= LineBits::HAS_HYPERLINK;
}
// Assumption: that the width of a grapheme is never > 2.
// This constrains the amount of look-back that we need to do here.
if idx > 0 {