blob: 32c8656fc9b15498073a09e516777f71827dc3b1 (
plain)
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
189
190
191
192
193
194
195
196
197
198
|
# incremental search panel
# based on code from gitk, Copyright (C) Paul Mackerras
class searchbar {
field w
field ctext
field searchstring {}
field casesensitive 1
field searchdirn -forwards
field smarktop
field smarkbot
constructor new {i_w i_text args} {
set w $i_w
set ctext $i_text
frame $w
label $w.l -text [mc Find:]
entry $w.ent -textvariable ${__this}::searchstring -background lightgreen
button $w.bn -text [mc Next] -command [cb find_next]
button $w.bp -text [mc Prev] -command [cb find_prev]
checkbutton $w.cs -text [mc Case-Sensitive] \
-variable ${__this}::casesensitive -command [cb _incrsearch]
pack $w.l -side left
pack $w.cs -side right
pack $w.bp -side right
pack $w.bn -side right
pack $w.ent -side left -expand 1 -fill x
eval grid conf $w -sticky we $args
grid remove $w
trace add variable searchstring write [cb _incrsearch_cb]
bind $w <Destroy> [cb delete_this]
return $this
}
method show {} {
if {![visible $this]} {
grid $w
}
focus -force $w.ent
}
method hide {} {
if {[visible $this]} {
focus $ctext
grid remove $w
}
}
method visible {} {
return [winfo ismapped $w]
}
method editor {} {
return $w.ent
}
method _get_new_anchor {} {
# use start of selection if it is visible,
# or the bounds of the visible area
set top [$ctext index @0,0]
set bottom [$ctext index @0,[winfo height $ctext]]
set sel [$ctext tag ranges sel]
if {$sel ne {}} {
set spos [lindex $sel 0]
if {[lindex $spos 0] >= [lindex $top 0] &&
[lindex $spos 0] <= [lindex $bottom 0]} {
return $spos
}
}
if {$searchdirn eq "-forwards"} {
return $top
} else {
return $bottom
}
}
method _get_wrap_anchor {dir} {
if {$dir eq "-forwards"} {
return 1.0
} else {
return end
}
}
method _do_search {start {mlenvar {}} {dir {}} {endbound {}}} {
set cmd [list $ctext search]
if {$mlenvar ne {}} {
upvar $mlenvar mlen
lappend cmd -count mlen
}
if {!$casesensitive} {
lappend cmd -nocase
}
if {$dir eq {}} {
set dir $searchdirn
}
lappend cmd $dir -- $searchstring
if {$endbound ne {}} {
set here [eval $cmd [list $start] [list $endbound]]
} else {
set here [eval $cmd [list $start]]
if {$here eq {}} {
set here [eval $cmd [_get_wrap_anchor $this $dir]]
}
}
return $here
}
method _incrsearch_cb {name ix op} {
after idle [cb _incrsearch]
}
method _incrsearch {} {
$ctext tag remove found 1.0 end
if {[catch {$ctext index anchor}]} {
$ctext mark set anchor [_get_new_anchor $this]
}
if {$searchstring ne {}} {
set here [_do_search $this anchor mlen]
if {$here ne {}} {
$ctext see $here
$ctext tag remove sel 1.0 end
$ctext tag add sel $here "$here + $mlen c"
$w.ent configure -background lightgreen
_set_marks $this 1
} else {
$w.ent configure -background lightpink
}
}
}
method find_prev {} {
find_next $this -backwards
}
method find_next {{dir -forwards}} {
focus $w.ent
$w.ent icursor end
set searchdirn $dir
$ctext mark unset anchor
if {$searchstring ne {}} {
set start [_get_new_anchor $this]
if {$dir eq "-forwards"} {
set start "$start + 1c"
}
set match [_do_search $this $start mlen]
$ctext tag remove sel 1.0 end
if {$match ne {}} {
$ctext see $match
$ctext tag add sel $match "$match + $mlen c"
}
}
}
method _mark_range {first last} {
set mend $first.0
while {1} {
set match [_do_search $this $mend mlen -forwards $last.end]
if {$match eq {}} break
set mend "$match + $mlen c"
$ctext tag add found $match $mend
}
}
method _set_marks {doall} {
set topline [lindex [split [$ctext index @0,0] .] 0]
set botline [lindex [split [$ctext index @0,[winfo height $ctext]] .] 0]
if {$doall || $botline < $smarktop || $topline > $smarkbot} {
# no overlap with previous
_mark_range $this $topline $botline
set smarktop $topline
set smarkbot $botline
} else {
if {$topline < $smarktop} {
_mark_range $this $topline [expr {$smarktop-1}]
set smarktop $topline
}
if {$botline > $smarkbot} {
_mark_range $this [expr {$smarkbot+1}] $botline
set smarkbot $botline
}
}
}
method scrolled {} {
if {$searchstring ne {}} {
after idle [cb _set_marks 0]
}
}
}
|
