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Enforce single-item selection in various actions

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We want to show an error when the user tries to invoke an action that expects only
a single item to be selected.

We're using the GetDisabledReason field to enforce this (as well as DisabledReason
on menu items).

I've created a ListControllerTrait to store some shared convenience functions for this.
This commit is contained in:
Jesse Duffield
2024-01-14 13:51:20 +11:00
parent 280b4d60f8
commit 51fb82d6bf
45 changed files with 854 additions and 757 deletions
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8
pkg/gui/context/traits/list_cursor.go
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@@ -114,10 +114,18 @@ func (self *ListCursor) CancelRangeSelect() {
self.rangeSelectMode = RangeSelectModeNone
}
// Returns true if we are in range select mode. Note that we may be in range select
// mode and still only selecting a single item. See AreMultipleItemsSelected below.
func (self *ListCursor) IsSelectingRange() bool {
return self.rangeSelectMode != RangeSelectModeNone
}
// Returns true if we are in range select mode and selecting multiple items
func (self *ListCursor) AreMultipleItemsSelected() bool {
startIdx, endIdx := self.GetSelectionRange()
return startIdx != endIdx
}
func (self *ListCursor) GetSelectionRange() (int, int) {
if self.IsSelectingRange() {
return utils.MinMax(self.selectedIdx, self.rangeStartIdx)