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Diffstat (limited to 'lib')
-rw-r--r--lib/msgstore.go41
1 files changed, 41 insertions, 0 deletions
diff --git a/lib/msgstore.go b/lib/msgstore.go
index 5b4d540..a81f9ad 100644
--- a/lib/msgstore.go
+++ b/lib/msgstore.go
@@ -17,6 +17,7 @@ type MessageStore struct {
// Ordered list of known UIDs
Uids []uint32
+ selected int
bodyCallbacks map[uint32][]func(io.Reader)
headerCallbacks map[uint32][]func(*types.MessageInfo)
@@ -34,6 +35,7 @@ func NewMessageStore(worker *types.Worker,
Deleted: make(map[uint32]interface{}),
DirInfo: *dirInfo,
+ selected: 0,
bodyCallbacks: make(map[uint32][]func(io.Reader)),
headerCallbacks: make(map[uint32][]func(*types.MessageInfo)),
@@ -279,3 +281,42 @@ func (store *MessageStore) Read(uids []uint32, read bool,
Uids: set,
}, cb)
}
+
+func (store *MessageStore) Selected() *types.MessageInfo {
+ return store.Messages[store.Uids[len(store.Uids)-store.selected-1]]
+}
+
+func (store *MessageStore) SelectedIndex() int {
+ return store.selected
+}
+
+func (store *MessageStore) Select(index int) {
+ store.selected = index
+ for ; store.selected < 0; store.selected = len(store.Uids) + store.selected {
+ /* This space deliberately left blank */
+ }
+ if store.selected > len(store.Uids) {
+ store.selected = len(store.Uids)
+ }
+}
+
+func (store *MessageStore) nextPrev(delta int) {
+ if len(store.Uids) == 0 {
+ return
+ }
+ store.selected += delta
+ if store.selected < 0 {
+ store.selected = 0
+ }
+ if store.selected >= len(store.Uids) {
+ store.selected = len(store.Uids) - 1
+ }
+}
+
+func (store *MessageStore) Next() {
+ store.nextPrev(1)
+}
+
+func (store *MessageStore) Prev() {
+ store.nextPrev(-1)
+}