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
|
-- mod-version:1 -- lite-xl 2.00
local core = require "core"
local common = require "core.common"
local command = require "core.command"
local keymap = require "core.keymap"
local Doc = require "core.doc"
local DocView = require "core.docview"
local navigate = {
list = {},
current = nil,
index = 0
}
--
-- Private functions
--
local function get_active_view()
if getmetatable(core.active_view) == DocView then
return core.active_view
end
return nil
end
-- Solution to safely remove elements from array table:
-- found at https://stackoverflow.com/a/53038524
local function array_remove(t, fnKeep)
local j, n = 1, #t;
for i=1, n do
if (fnKeep(t, i, j)) then
if (i ~= j) then
t[j] = t[i];
t[i] = nil;
end
j = j + 1;
else
t[i] = nil;
end
end
return t;
end
local function add(doc)
-- Make new navigation point last in list
if navigate.index > 0 and navigate.index < #navigate.list then
local remove_start = navigate.index + 1
local remove_end = #navigate.list
array_remove(navigate.list, function(_, i)
if i >= remove_start and i <= remove_end then
return false
end
return true
end)
end
local line, col = doc:get_selection()
table.insert(navigate.list, {
filename = doc.filename,
line = line,
col = col
})
navigate.current = navigate.list[#navigate.list]
navigate.index = #navigate.list
end
local function open_doc(doc)
core.root_view:open_doc(
core.open_doc(
common.home_expand(
doc.filename
)
)
)
local av_doc = get_active_view().doc
local line, col = av_doc:get_selection()
if doc.line ~= line or doc.col ~= col then
av_doc:set_selection(doc.line, doc.col, doc.line, doc.col)
end
end
--
-- Public functions
--
function navigate.next()
if navigate.index < #navigate.list then
navigate.index = navigate.index + 1
navigate.current = navigate.list[navigate.index]
open_doc(navigate.current)
end
end
function navigate.prev()
if navigate.index > 1 then
navigate.index = navigate.index - 1
navigate.current = navigate.list[navigate.index]
open_doc(navigate.current)
end
end
--
-- Thread
--
core.add_thread(function()
while true do
local av = get_active_view()
if av and av.doc and av.doc.filename then
local doc = av.doc
local line, col = doc:get_selection()
local current = navigate.current
if
not current
or
current.filename ~= doc.filename
or
current.line ~= line
then
add(doc)
else
current.col = col
end
end
coroutine.yield(0.5)
end
end)
--
-- Patching
--
local doc_on_close = Doc.on_close
function Doc:on_close()
local filename = self.filename
-- remove all positions referencing closed file
array_remove(navigate.list, function(t, i)
if t[i].filename == filename then
return false
end
return true
end)
doc_on_close(self)
end
--
-- Commands
--
command.add("core.docview", {
["navigate:previous"] = function()
navigate.prev()
end,
["navigate:next"] = function()
navigate.next()
end,
})
--
-- Default Keybindings
--
keymap.add {
["alt+left"] = "navigate:previous",
["alt+right"] = "navigate:next",
}
return navigate
|
