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Add range selection ability on list contexts

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This adds range select ability in two ways:
1) Sticky: like what we already have with the staging view i.e. press v then use arrow keys
2) Non-sticky: where you just use shift+up/down to expand the range

The state machine works like this:
(no range, press 'v') -> sticky range
(no range, press arrow) -> no range
(no range, press shift+arrow) -> nonsticky range
(sticky range, press 'v') -> no range
(sticky range, press arrow) -> sticky range
(sticky range, press shift+arrow) -> nonsticky range
(nonsticky range, press 'v') -> no range
(nonsticky range, press arrow) -> no range
(nonsticky range, press shift+arrow) -> nonsticky range
This commit is contained in:
Jesse Duffield 2024-01-07 19:44:19 +11:00
parent e887a2eb3c
commit 24a4302c52
42 changed files with 533 additions and 213 deletions
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10
pkg/gui/context/list_context_trait.go
View file

@ -32,6 +32,14 @@ func (self *ListContextTrait) FocusLine() {
self.GetViewTrait().FocusPoint(
self.ModelIndexToViewIndex(self.list.GetSelectedLineIdx()))
selectRangeIndex, isSelectingRange := self.list.GetRangeStartIdx()
if isSelectingRange {
selectRangeIndex = self.ModelIndexToViewIndex(selectRangeIndex)
self.GetViewTrait().SetRangeSelectStart(selectRangeIndex)
} else {
self.GetViewTrait().CancelRangeSelect()
}
// If FocusPoint() caused the view to scroll (because the selected line
// was out of view before), we need to rerender the view port again.
// This can happen when pressing , or . to scroll by pages, or < or > to
@ -84,7 +92,7 @@ func (self *ListContextTrait) HandleFocusLost(opts types.OnFocusLostOpts) error
// OnFocus assumes that the content of the context has already been rendered to the view. OnRender is the function which actually renders the content to the view
func (self *ListContextTrait) HandleRender() error {
self.list.RefreshSelectedIdx()
self.list.ClampSelection()
content := self.renderLines(-1, -1)
self.GetViewTrait().SetContent(content)
self.c.Render()