1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
|
package gui
type ListContext struct {
GetItemsLength func() int
GetDisplayStrings func() [][]string
OnFocus func() error
OnFocusLost func() error
OnClickSelectedItem func() error
// the boolean here tells us whether the item is nil. This is needed because you can't work it out on the calling end once the pointer is wrapped in an interface (unless you want to use reflection)
SelectedItem func() (ListItem, bool)
GetPanelState func() IListPanelState
Gui *Gui
*BasicContext
}
type IListPanelState interface {
SetSelectedLineIdx(int)
GetSelectedLineIdx() int
}
type ListItem interface {
// ID is a SHA when the item is a commit, a filename when the item is a file, 'stash@{4}' when it's a stash entry, 'my_branch' when it's a branch
ID() string
// Description is something we would show in a message e.g. '123as14: push blah' for a commit
Description() string
}
func (lc *ListContext) GetSelectedItem() (ListItem, bool) {
return lc.SelectedItem()
}
func (lc *ListContext) GetSelectedItemId() string {
item, ok := lc.SelectedItem()
if !ok {
return ""
}
return item.ID()
}
// 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 (lc *ListContext) OnRender() error {
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
if lc.GetDisplayStrings != nil {
lc.Gui.refreshSelectedLine(lc.GetPanelState(), lc.GetItemsLength())
lc.Gui.renderDisplayStrings(view, lc.GetDisplayStrings())
}
return nil
}
func (lc *ListContext) HandleFocusLost() error {
if lc.OnFocusLost != nil {
return lc.OnFocusLost()
}
return nil
}
func (lc *ListContext) HandleFocus() error {
if lc.Gui.popupPanelFocused() {
return nil
}
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
view.FocusPoint(0, lc.GetPanelState().GetSelectedLineIdx())
if lc.Gui.State.Modes.Diffing.Active() {
return lc.Gui.renderDiff()
}
if lc.OnFocus != nil {
return lc.OnFocus()
}
return nil
}
func (lc *ListContext) HandleRender() error {
return lc.OnRender()
}
func (lc *ListContext) handlePrevLine() error {
return lc.handleLineChange(-1)
}
func (lc *ListContext) handleNextLine() error {
return lc.handleLineChange(1)
}
func (lc *ListContext) handleLineChange(change int) error {
if !lc.Gui.isPopupPanel(lc.ViewName) && lc.Gui.popupPanelFocused() {
return nil
}
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return err
}
selectedLineIdx := lc.GetPanelState().GetSelectedLineIdx()
if (change < 0 && selectedLineIdx == 0) || (change > 0 && selectedLineIdx == lc.GetItemsLength()-1) {
return nil
}
lc.Gui.changeSelectedLine(lc.GetPanelState(), lc.GetItemsLength(), change)
view.FocusPoint(0, lc.GetPanelState().GetSelectedLineIdx())
return lc.HandleFocus()
}
func (lc *ListContext) handleNextPage() error {
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
delta := lc.Gui.pageDelta(view)
return lc.handleLineChange(delta)
}
func (lc *ListContext) handleGotoTop() error {
return lc.handleLineChange(-lc.GetItemsLength())
}
func (lc *ListContext) handleGotoBottom() error {
return lc.handleLineChange(lc.GetItemsLength())
}
func (lc *ListContext) handlePrevPage() error {
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
delta := lc.Gui.pageDelta(view)
return lc.handleLineChange(-delta)
}
func (lc *ListContext) handleClick() error {
if !lc.Gui.isPopupPanel(lc.ViewName) && lc.Gui.popupPanelFocused() {
return nil
}
view, err := lc.Gui.g.View(lc.ViewName)
if err != nil {
return nil
}
prevSelectedLineIdx := lc.GetPanelState().GetSelectedLineIdx()
newSelectedLineIdx := view.SelectedLineIdx()
// we need to focus the view
if err := lc.Gui.pushContext(lc); err != nil {
return err
}
if newSelectedLineIdx > lc.GetItemsLength()-1 {
return nil
}
lc.GetPanelState().SetSelectedLineIdx(newSelectedLineIdx)
prevViewName := lc.Gui.currentViewName()
if prevSelectedLineIdx == newSelectedLineIdx && prevViewName == lc.ViewName && lc.OnClickSelectedItem != nil {
return lc.OnClickSelectedItem()
}
return lc.HandleFocus()
}
func (lc *ListContext) onSearchSelect(selectedLineIdx int) error {
lc.GetPanelState().SetSelectedLineIdx(selectedLineIdx)
return lc.HandleFocus()
}
|