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# tclets.tcl --
#
# Drag & Drop Tclets
# by Ray Johnson
#
# A simple way to create Tcl applications. This applications will copy a droped Tcl file
# into a copy of a stub application (the user can pick). The file is placed into the
# TEXT resource named "tclshrc" which is automatically executed on startup.
#
# RCS: @(#) $Id: tclets.tcl,v 1.2 1998/09/14 18:23:33 stanton Exp $
#
# Copyright (c) 1997 Sun Microsystems, Inc.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# tkOpenDocument --
#
# This procedure is a called whenever Wish recieves an "Open" event. The
# procedure must be named tkOpenDocument for this to work. Passed in files
# are assumed to be Tcl files that the user wants to be made into Tclets.
# (Only the first one is used.) The procedure then creates a copy of the
# stub app and places the Tcl file in the new application's resource fork.
#
# Parameters:
# args List of files
#
# Results:
# One success a new Tclet is created.
proc tkOpenDocument {args} {
global droped_to_start
# We only deal with the one file droped on the App
set tclFile [lindex $args 0]
set stub [GetStub]
# Give a helper screen to guide user
toplevel .helper -menu .bar
unsupported1 style .helper dBoxProc
message .helper.m -aspect 300 -text \
"Select the name & location of your target Tcl application."
pack .helper.m
wm geometry .helper +20+40
update idletasks
# Get the target file from the end user
set target [tk_getSaveFile]
destroy .helper
if {$target == ""} return
# Copy stub, copy the droped file into the stubs text resource
file copy $stub $target
set id [open $tclFile r]
set rid [resource open $target w]
resource write -name tclshrc -file $rid TEXT [read $id]
resource close $rid
close $id
# This is a hint to the start-up code - always set to true
set droped_to_start true
}
# GetStub --
#
# Get the location of our stub application. The value may be cached,
# in the preferences file, or we may need to ask the user.
#
# Parameters:
# None.
#
# Results:
# A path to the stub application.
proc GetStub {} {
global env stub_location
if {[info exists stub_location]} {
return $stub_location
}
set file $env(PREF_FOLDER)
append file "D&D Tclet Preferences"
if {[file exists $file]} {
uplevel #0 [list source $file]
if {[info exists stub_location] && [file exists $stub_location]} {
return $stub_location
}
}
SelectStub
if {[info exists stub_location]} {
return $stub_location
} else {
exit
}
}
# SelectStub --
#
# This procedure uses tk_getOpenFile to allow the user to select
# the copy of "Wish" that is used as the basis for Tclets. The
# result is stored in a preferences file.
#
# Parameters:
# None.
#
# Results:
# None. The prefernce file is updated.
proc SelectStub {} {
global env stub_location
# Give a helper screen to guide user
toplevel .helper -menu .bar
unsupported1 style .helper dBoxProc
message .helper.m -aspect 300 -text \
"Select \"Wish\" stub to clone. A copy of this application will be made to create your Tclet." \
pack .helper.m
wm geometry .helper +20+40
update idletasks
set new_location [tk_getOpenFile]
destroy .helper
if {$new_location != ""} {
set stub_location $new_location
set file [file join $env(PREF_FOLDER) "D&D Tclet Preferences"]
set id [open $file w]
puts $id [list set stub_location $stub_location]
close $id
}
}
# CreateMenus --
#
# Create the menubar for this application.
#
# Parameters:
# None.
#
# Results:
# None.
proc CreateMenus {} {
menu .bar
.bar add cascade -menu .bar.file -label File
.bar add cascade -menu .bar.apple
. configure -menu .bar
menu .bar.apple -tearoff 0
.bar.apple add command -label "About Drag & Drop Tclets..." -command {ShowAbout}
menu .bar.file -tearoff 0
.bar.file add command -label "Show Console..." -command {console show}
.bar.file add command -label "Select Wish Stub..." -command {SelectStub}
.bar.file add separator
.bar.file add command -label "Quit" -accel Command-Q -command exit
}
# ShowAbout --
#
# Show the about box for Drag & Drop Tclets.
#
# Parameters:
# None.
#
# Results:
# None.
proc ShowAbout {} {
tk_messageBox -icon info -type ok -message \
"Drag & Drop Tclets
by Ray Johnson\n\n\
Copyright (c) 1997 Sun Microsystems, Inc."
}
# Start --
#
# This procedure provides the main start-up code for the application.
# It should be run first thing on start up. It will create the UI
# and set up the rest of the state of the application.
#
# Parameters:
# None.
#
# Results:
# None.
proc Start {} {
global droped_to_start
# Hide . & console - see if we ran as a droped item
wm geometry . 1x1-25000-25000
console hide
# Run update - if we get any drop events we know that we were
# started by a drag & drop - if so, we quit automatically when done
set droped_to_start false
update
if {$droped_to_start == "true"} {
exit
}
# We were not started by a drag & drop - create the UI
CreateMenus
}
# Now that everything is defined, lets start the app!
Start
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