+ set nScanTerm [$w.top.entry get]
+ if {$nScanTerm != $scanTerm} {
+ z39 callback [list scan-response $attr 0 35]
+ z39.scan numberOfTermsRequested 5
+ z39.scan preferredPositionInResponse 1
+ set scanTerm $nScanTerm
+ puts "${attr} \{${scanTerm}\}"
+ if {$scanTerm == ""} {
+ z39.scan scan "${attr} 0"
+ } else {
+ z39.scan scan "${attr} \{${scanTerm}\}"
+ }
+ show-status {Scan} 1 0
+ return
+ }
+ set status [z39.scan scanStatus]
+ if {$status == 6} {
+ tkerror "Scan fail"
+ show-status {Ready} 0 1
+ set cancelFlag 0
+ return
+ }
+ if {$toget < 0} {
+ for {set i 0} {$i < $m} {incr i} {
+ set term [lindex [z39.scan scanLine $i] 1]
+ set nostr [format " %-6d" [lindex [z39.scan scanLine $i] 2]]
+ $w.top.list insert $i "$nostr $term"
+ }
+ incr scanView $m
+ $w.top.list yview $scanView
+ } else {
+ $w.top.list delete $start end
+ for {set i 0} {$i < $m} {incr i} {
+ set term [lindex [z39.scan scanLine $i] 1]
+ set nostr [format " %-6d" [lindex [z39.scan scanLine $i] 2]]
+ $w.top.list insert end "$nostr $term"
+ }
+ }
+ if {$cancelFlag} {
+ show-status {Ready} 0 1
+ set cancelFlag 0
+ return
+ }
+ if {$toget > 0 && $m > 1 && $m < $toget} {
+ set ntoget [expr $toget - $m + 1]
+ puts ntoget=$ntoget
+ z39 callback [list scan-response $attr [expr $start + $m - 1] $ntoget]
+ set q $term
+ puts "down continue: $q"
+ if {$ntoget > 10} {
+ z39.scan numberOfTermsRequested 10
+ } else {
+ z39.scan numberOfTermsRequested $ntoget
+ }
+ z39.scan preferredPositionInResponse 1
+ puts "${attr} \{$q\}"
+ z39.scan scan "${attr} \{$q\}"
+ return
+ }
+ if {$toget < 0 && $m > 1 && $m < [expr - $toget]} {
+ set ntoget [expr - $toget - $m]
+ puts ntoget=$ntoget
+ z39 callback [list scan-response $attr 0 -$ntoget]
+ set q [string range [$w.top.list get 0] 8 end]
+ puts "up continue: $q"
+ if {$ntoget > 10} {
+ z39.scan numberOfTermsRequested 10
+ z39.scan preferredPositionInResponse 11
+ } else {
+ z39.scan numberOfTermsRequested $ntoget
+ z39.scan preferredPositionInResponse [incr ntoget]
+ }
+ puts "${attr} \{$q\}"
+ z39.scan scan "${attr} \{$q\}"
+ return
+ }
+ show-status {Ready} 0 1
+}
+
+proc scan-down {attr} {
+ global scanView
+
+ set w .scan-window
+ set scanView [expr $scanView + 5]
+ set s [$w.top.list size]
+ if {$scanView > $s} {
+ z39 callback [list scan-response $attr [expr $s - 1] 25]
+ set q [string range [$w.top.list get [expr $s - 1]] 8 end]
+ puts "down: $q"
+ z39.scan numberOfTermsRequested 10
+ z39.scan preferredPositionInResponse 1
+ show-status {Scan} 1 0
+ puts "${attr} \{$q\}"
+ z39.scan scan "${attr} \{$q\}"
+ return
+ }
+ $w.top.list yview $scanView
+}
+
+proc scan-up {attr} {
+ global scanView
+
+ set w .scan-window
+ set scanView [expr $scanView - 5]
+ if {$scanView < 0} {
+ z39 callback [list scan-response $attr 0 -25]
+ set q [string range [$w.top.list get 0] 8 end]
+ puts "up: $q"
+ z39.scan numberOfTermsRequested 10
+ z39.scan preferredPositionInResponse 11
+ show-status {Scan} 1 0
+ z39.scan scan "${attr} \{$q\}"
+ return
+ }
+ $w.top.list yview $scanView