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Code Issues Projects Releases Wiki Activity

MenuPopup now supports PageUp/Down and Home/End

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This commit is contained in:
Alexandre Bury 2016-07-02 20:53:13 -07:00
parent 692c310656
commit d89c83f0ed
2 changed files with 40 additions and 25 deletions
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2
examples/menubar.rs
View File

@ -15,7 +15,7 @@ fn main() {
MenuTree::new()
.leaf("New", |s| s.add_layer(Dialog::info("New file!")))
.subtree("Recent", MenuTree::new().with(|tree| {
for i in 1..6 {
for i in 1..100 {
tree.add_leaf(&format!("Item {}", i), |_| ())
}
}))

63
src/view/menu_popup.rs
View File

@ -43,6 +43,37 @@ impl MenuPopup {
}
}
fn scroll_up(&mut self, mut n: usize, cycle: bool) {
while n > 0 {
if self.focus > 0 {
self.focus -= 1;
} else if cycle {
self.focus = self.menu.children.len() - 1;
} else {
break;
}
if !self.menu.children[self.focus].is_delimiter() {
n -= 1;
}
}
}
fn scroll_down(&mut self, mut n: usize, cycle: bool) {
while n > 0 {
if self.focus + 1 < self.menu.children.len() {
self.focus += 1;
} else if cycle {
self.focus = 0;
} else {
break;
}
if !self.menu.children[self.focus].is_delimiter() {
n -= 1;
}
}
}
/// Sets the alignment for this view.
pub fn align(mut self, align: Align) -> Self {
@ -163,30 +194,14 @@ impl View for MenuPopup {
s.pop_layer();
});
}
Event::Key(Key::Up) => {
loop {
if self.focus > 0 {
self.focus -= 1;
} else {
self.focus = self.menu.children.len() - 1;
}
if !self.menu.children[self.focus].is_delimiter() {
break;
}
}
}
Event::Key(Key::Down) => {
loop {
if self.focus + 1 < self.menu.children.len() {
self.focus += 1;
} else {
self.focus = 0;
}
if !self.menu.children[self.focus].is_delimiter() {
break;
}
}
}
Event::Key(Key::Up) => self.scroll_up(1, true),
Event::Key(Key::PageUp) => self.scroll_up(5, false),
Event::Key(Key::Down) => self.scroll_down(1, true),
Event::Key(Key::PageDown) => self.scroll_down(5, false),
Event::Key(Key::Home) => self.focus = 0,
Event::Key(Key::End) => self.focus = self.menu.children.len() - 1,
Event::Key(Key::Right) if self.menu.children[self.focus]
.is_subtree() => {
return match self.menu.children[self.focus] {