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# Copyright (C) 1999-2018
# Smithsonian Astrophysical Observatory, Cambridge, MA, USA
# For conditions of distribution and use, see copyright notice in "copyright"
package provide DS9 1.0
proc VODef {} {
global ivo
global pvo
set ivo(top) .vo
set ivo(mb) .vomb
set ivo(server,host) {}
set ivo(server,title) {}
set ivo(server,url) {}
set ivo(server,button) {}
set ivo(ka,id) {}
# prefs only
set pvo(server) {http://cxc.harvard.edu/chandraed/list.txt}
set pvo(hv) 1
set pvo(method) mime
set pvo(delay) 15
}
proc VOKeepAlive {doka} {
global ivo
global pvo
global xpa
# if not xpa, return
if {$pvo(method) != {xpa}} {
return
}
# if keep-alive turned off, return
if {$pvo(delay) <= 0} {
return
}
# count the connections
set n 0
for {set ii 0} {$ii < [llength $ivo(server,button)]} {incr ii} {
if {$ivo(b$ii)} {
incr n
break
}
}
# no connections => kill existing keep-alive, if necessary
if {$n == 0} {
if {$ivo(ka,id) != {}} {
after cancel $ivo(ka,id)
set ivo(ka,id) {}
}
} else {
# yes connections
# send a keep-alive, if necessary
if {$doka} {
# puts [format "send keepalive: %s (%d)" [exec date] $pvo(delay)]
xpanskeepalive $xpa
}
# arrange for the next one
set ivo(ka,id) [after [expr $pvo(delay) * 60 * 1000] VOKeepAlive 1]
}
}
proc VOCancel {varname} {
upvar #0 $varname var
global $varname
# set state to 0 so that we don't process the finish proc
set var(active) 0
set var(valid) 0
if {[info exists var(token)]} {
http::reset $var(token)
}
}
proc VODestroy {varname} {
upvar #0 $varname var
global $varname
VOCancel $varname
if {[winfo exists $var(top)]} {
destroy $var(top)
destroy $var(mb)
}
unset $varname
}
proc VOReset {varname} {
upvar #0 $varname var
global $varname
set var(active) 0
if {[info exists var(token)]} {
http::cleanup $var(token)
unset var(token)
}
}
proc VODone {varname} {
upvar #0 $varname var
global $varname
VOReset $varname
set var(valid) 1
}
proc VOError {varname message} {
upvar #0 $varname var
global $varname
Error $message
VOReset $varname
set var(valid) 0
}
proc VODialog {} {
global ivo
global pvo
global ds9
if {[winfo exists $ivo(top)]} {
raise $ivo(top)
return
}
set varname voi
upvar #0 $varname var
global $varname
# variables
set var(top) $ivo(top)
set var(mb) $ivo(mb)
set var(url) {}
# create the window
set w $var(top)
set mb $var(mb)
Toplevel $w $mb 6 [msgcat::mc {Virtual Observatory}] "VODestroy $varname"
$mb add cascade -label [msgcat::mc {File}] -menu $mb.file
menu $mb.file
$mb.file add command -label [msgcat::mc {Apply}] \
-command "VOApply $varname"
$mb.file add command -label [msgcat::mc {Cancel}] \
-command "VOCancel $varname"
$mb.file add separator
$mb.file add command -label [msgcat::mc {Help Me Choose}] \
-command HelpVO
$mb.file add command -label [msgcat::mc {Configure}] \
-command [list PrefsDialog http]
$mb.file add separator
$mb.file add command -label [msgcat::mc {Close}] \
-command "VODestroy $varname"
# Sites
ttk::labelframe $w.param -text [msgcat::mc {Sites}] -padding 2
# Browser
set f [ttk::labelframe $w.opt -text [msgcat::mc {Browser}] -padding 2]
set var(hv,button) [ttk::checkbutton $w.opt.hv \
-text [msgcat::mc {Use Internal Web Browser}] \
-variable pvo(hv) \
-command SavePrefs]
ttk::radiobutton $w.opt.xpa \
-text [msgcat::mc {Connect Directly}] \
-variable pvo(method) -value xpa -command PrefsVOMethod
ttk::radiobutton $w.opt.http \
-text [msgcat::mc {Connect Using Web Proxy}] \
-variable pvo(method) -value mime -command PrefsVOMethod
grid $w.opt.hv -padx 2 -pady 2 -sticky w
grid $w.opt.xpa $w.opt.http -padx 2 -pady 2 -sticky w
set f [ttk::frame $w.buttons]
ttk::button $f.help -text [msgcat::mc {Help Me Choose}] \
-command HelpVO
ttk::button $f.proxy -text [msgcat::mc {Configure}] \
-command [list PrefsDialog http]
ttk::button $f.close -text [msgcat::mc {Close}] \
-command "VODestroy $varname"
pack $f.help $f.proxy $f.close -side left -expand true -padx 2 -pady 4
# Fini
grid $w.param -sticky news
grid $w.opt -sticky news
grid $w.buttons -sticky ew
grid rowconfigure $w 0 -weight 1
grid rowconfigure $w 1 -weight 1
grid columnconfigure $w 0 -weight 1
if {[string length $ivo(server,host)] == 0} {
VOApply $varname
} else {
set l [llength $ivo(server,host)]
for {set ii 0} {$ii<$l} {incr ii} {
set b [lindex $ivo(server,button) $ii]
ttk::checkbutton $b -text "[lindex $ivo(server,title) $ii] ([lindex $ivo(server,url) $ii])" -variable ivo(b$ii) -command "VOCheck $varname $ii"
pack $b -anchor w -padx 2 -pady 2
}
}
}
proc VOApply {varname} {
upvar #0 $varname var
global $varname
global ivo
global pvo
global xpa
set w $var(top)
# delete old servers
for {set ii 0} {$ii < [llength $ivo(server,button)]} {incr ii} {
catch {xparemote $xpa [lindex $ivo(server,host) $ii] - -proxy}
catch {destroy [lindex $ivo(server,button) $ii]}
catch {unset ivo(b$ii)}
}
set ivo(server,host) {}
set ivo(server,title) {}
set ivo(server,url) {}
set ivo(server,button) {}
# first try
if {$pvo(server) != {}} {
set var(valid) 0
set var(url) $pvo(server)
VOLoad $varname
if {$var(valid)} {
VOKeepAlive 0
return
}
}
# next try
set var(valid) 0
set var(url) {http://cxc.harvard.edu/chandraed/list.txt}
VOLoad $varname
if {$var(valid)} {
VOKeepAlive 0
return
}
# last try
set var(url) {http://xray1.physics.rutgers.edu/vo/list.txtt}
VOLoad $varname
if {$var(valid)} {
VOKeepAlive 0
return
}
# default
VOError $varname "Unable to access VO server list, please verify internet connection. Using default list."
set rr {xray1.physics.rutgers.edu:28571 Rutgers Primary MOOC X-ray Analysis Server http://xray1.physics.rutgers.edu/archive.html
rinzai.rutgers.edu:28571 Rutgers X-ray Analysis Server #2 http://rinzai.rutgers.edu/archive.html}
VOParse $varname $rr
VOKeepAlive 0
}
proc VOLoad {varname} {
upvar #0 $varname var
global $varname
global ihttp
if {![catch {set var(token) [http::geturl $var(url) \
-timeout $ihttp(timeout) \
-headers "[ProxyHTTP]"]
}]} {
# reset errorInfo (may be set in http::geturl)
global errorInfo
set errorInfo {}
set var(active) 1
VOFinish $varname $var(token)
}
}
proc VOFinish {varname token} {
upvar #0 $varname var
global $varname
if {!($var(active))} {
VOReset $varname
set var(valid) 0
return
}
upvar #0 $token t
# Code
set code [http::ncode $token]
# Meta
set meta $t(meta)
# Log it
HTTPLog $token
# Result?
switch -- $code {
200 -
203 -
503 {
VOParse $varname [http::data $var(token)]
VODone $varname
}
201 -
300 -
301 -
302 -
303 -
305 -
307 {
foreach {name value} $meta {
if {[regexp -nocase ^location$ $name]} {
global debug
if {$debug(tcl,http)} {
puts stderr "VOFinish redirect $code to $value"
}
# clean up and resubmit
http::cleanup $token
unset var(token)
set var(url) $value
VOLoad $varname
}
}
}
}
}
proc VOParse {varname rr} {
upvar #0 $varname var
global $varname
global ivo
set w $var(top)
set data [string trimright $rr \n]
set lines [split $data \n]
set len [llength $lines]
for {set ii 0} {$ii<$len} {incr ii} {
set line [lindex $lines $ii]
set b "$w.param.b$ii"
set ll [split $line \t]
lappend ivo(server,host) [lindex $ll 0]
lappend ivo(server,title) [lindex $ll 1]
lappend ivo(server,url) [lindex $ll 2]
lappend ivo(server,button) $b
set ivo(b$ii) 0
ttk::checkbutton $b -text "[lindex $ivo(server,title) $ii] ([lindex $ivo(server,url) $ii])" -variable ivo(b$ii) -command "VOCheck $varname $ii"
pack $b -anchor w -padx 2 -pady 2
}
}
proc VOCheck {varname ii} {
upvar #0 $varname var
global $varname
global ivo
global pvo
global xpa
set w $var(top)
set b "$w.param.b$ii"
if {$ivo(b$ii)} {
switch $pvo(method) {
mime {}
xpa {
if {[info exists xpa]} {
if {[catch {xparemote $xpa [lindex $ivo(server,host) $ii] + -proxy}]} {
Info [msgcat::mc {Unable to connect directly: using Web Proxy}]
set pvo(method) mime
}
}
}
}
if {$pvo(hv)} {
set url [lindex $ivo(server,url) $ii]
ParseURL $url r
HV "vo$ii" "$r(authority)" $url {} 1
}
} else {
switch $pvo(method) {
mime {}
xpa {
catch {xparemote $xpa [lindex $var(server,host) $ii] - -proxy}
}
}
}
# start or stop the keep-alive, as needed
VOKeepAlive 0
}
proc PrefsVOMethod {} {
global pvo
switch $pvo(method) {
mime {set pvo(hv) 1}
xpa {}
}
}
proc PrefsDialogVO {} {
global dprefs
set w $dprefs(tab)
$dprefs(list) insert end [msgcat::mc {VO}]
lappend dprefs(tabs) [ttk::frame $w.vo]
# Browser
set f [ttk::labelframe $w.vo.browser -text [msgcat::mc {Browser}]]
ttk::checkbutton $f.web -text [msgcat::mc {Use Internal Web Browser}] \
-variable pvo(hv)
ttk::radiobutton $f.xpa -text [msgcat::mc {Connect Directly}] \
-variable pvo(method) -value xpa -command PrefsVOMethod
ttk::radiobutton $f.mime -text [msgcat::mc {Connect Using Web Proxy}] \
-variable pvo(method) -value mime -command PrefsVOMethod
grid $f.web -padx 2 -pady 2 -sticky w
grid $f.xpa $f.mime -padx 2 -pady 2 -sticky w
# Server
set f [ttk::labelframe $w.vo.server -text [msgcat::mc {VO Server}]]
ttk::label $f.stitle -text [msgcat::mc {Default}]
ttk::entry $f.server -textvariable pvo(server) -width 50
grid $f.stitle $f.server -padx 2 -pady 2 -sticky w
# Keep-Alive
set f [ttk::labelframe $w.vo.keep -text [msgcat::mc {Keep-Alive}]]
ttk::label $f.dtitle -text [msgcat::mc {Minutes}]
ttk::entry $f.delay -textvariable pvo(delay) -width 5
grid $f.dtitle $f.delay -padx 2 -pady 2 -sticky w
pack $w.vo.browser $w.vo.server $w.vo.keep -side top -fill both -expand true
}
proc ProcessVOCmd {varname iname} {
upvar $varname var
upvar $iname i
vo::YY_FLUSH_BUFFER
vo::yy_scan_string [lrange $var $i end]
vo::yyparse
incr i [expr $vo::yycnt-1]
}
proc VOCmdConnect {str} {
global voi
global ivo
VODialog
# find best match
set ii [lsearch $ivo(server,url) "*$str*"]
if {$ii>=0} {
set ivo(b$ii) 1
VOCheck voi $ii
}
}
proc VOCmdDisconnect {str} {
global voi
global ivo
VODialog
# find best match
set ii [lsearch $ivo(server,url) "*$str*"]
if {$ii>=0} {
set ivo(b$ii) 0
VOCheck voi $ii
}
}
proc ProcessSendVOCmd {proc id param {sock {}} {fn {}}} {
global ivo
global pvo
switch -- [string tolower $param] {
method {$proc $id "$pvo(method)\n"}
server {$proc $id "$pvo(server)\n"}
internal {$proc $id [ToYesNo $pvo(hv)]}
delay {$proc $id "$pvo(delay)\n"}
connect {
# current connections
set len [llength $ivo(server,button)]
set rr {}
for {set ii 0} {$ii<$len} {incr ii} {
if {$ivo(b$ii)} {
append rr "[lindex $ivo(server,host) $ii] [lindex $ivo(server,title) $ii] [lindex $ivo(server,url) $ii] $ivo(b$ii)\n"
}
}
$proc $id $rr
}
default {
VODialog
# all possible connections
set len [llength $ivo(server,button)]
set rr {}
for {set ii 0} {$ii<$len} {incr ii} {
append rr "[lindex $ivo(server,host) $ii] [lindex $ivo(server,title) $ii] [lindex $ivo(server,url) $ii] $ivo(b$ii)\n"
}
$proc $id $rr
}
}
}
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