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99 lines
2.8 KiB
Tcl
99 lines
2.8 KiB
Tcl
15 years ago
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# Open a viewer for HTML help info
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# Copyright (C) 2002, 2008, Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License (GPL) as published by
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# the Free Software Foundation; either version 2 of the License, or (at
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# your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# ------------------------------------------------------------------------------
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# NAME: public proc open_help
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# SYNOPSIS: open_help file
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# DESC: Opens html help file using an appropriate
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# browser.
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# ------------------------------------------------------------------------------
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proc open_help {hfile} {
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debug $hfile
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# create full pathname link
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set link file://[file join $::GDBTK_LIBRARY help $hfile]
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# windows is easy
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if {$::gdbtk_platform(platform) == "windows"} {
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ide_shell_execute open $link
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return
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}
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#
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# for Unix, we never know what is installed
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#
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# set list of viewer apps to try
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switch [pref get gdb/compat] {
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"KDE" {
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set apps {htmlview khelpcenter firefox opera mozilla}
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}
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"GNOME" {
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set apps {htmlview firefox opera mozilla gnome-help khelpcenter}
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}
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default {
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set apps {htmlview firefox opera mozilla gnome-help khelpcenter netscape}
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}
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}
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# If the user has previously entered a browser name, append it
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# to the list. Should it go first or last?
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set bname [pref get gdb/help/browsername]
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if {$bname != ""} {
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lappend apps $bname
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}
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# now loop through list checking each application
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foreach app $apps {
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debug "app=$app"
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if {[catch "exec $app $link &" result]} {
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debug "$app failed: $result"
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} else {
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return
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}
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}
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# if we reached here, nothing worked, so prompt for a name
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set text "No help browser was found on your system.\n\
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Please enter the name of an HTML viewer application."
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while {[set app [prompt_helpname $text]] != "0"} {
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if {$app != ""} {
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if {[catch "exec $app $link &" result]} {
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dbug W "$app failed: $result"
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set text "Could not run application $app.\n\
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Please enter the name of an HTML viewer application."
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} else {
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pref set gdb/help/browsername $app
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return
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}
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}
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}
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}
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# displays an entry dialog and asks for the name of an application
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# returns 0 on cancel
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# name on success
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proc prompt_helpname {text} {
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iwidgets::promptdialog .pd -title "Browser Query" -modality application \
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-labeltext $text
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if {[.pd activate]} {
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set app [string trim [.pd get]]
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destroy .pd
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return $app
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}
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destroy .pd
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debug "cancelled"
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return 0
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}
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