[2154] | 1 | # ---------------------------------------------------------------------- |
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| 2 | # RAPPTURE OBJECT: boolean |
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| 3 | # |
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| 4 | # A logical on/off value. It is usually used as an input, but it |
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| 5 | # can also be an output from a simulation. |
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| 6 | # |
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| 7 | # ====================================================================== |
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| 8 | # AUTHOR: Michael McLennan, Purdue University |
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[3177] | 9 | # Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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[2154] | 10 | # |
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| 11 | # See the file "license.terms" for information on usage and |
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| 12 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 13 | # ====================================================================== |
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| 14 | |
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[1728] | 15 | object boolean -extends base { |
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[2154] | 16 | palettes "Inputs" "Outputs" |
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[2134] | 17 | |
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[1728] | 18 | help http://rappture.org/wiki/rp_xml_ele_boolean |
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[2134] | 19 | |
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[2157] | 20 | attr default -title "Default Value" -type boolean -path default -only input -tooltip "Sets the value that this input has when the program first starts. This value is used by default unless the user explicitly changes it." |
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[1728] | 21 | |
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[2154] | 22 | check default { |
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| 23 | if {[string length [string trim $attr(default)]] == 0} { |
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| 24 | return [list error "Must have a default value for this boolean value."] |
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| 25 | } |
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| 26 | } |
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| 27 | |
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[2134] | 28 | storage { |
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| 29 | private variable _val ;# boolean value |
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| 30 | } |
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| 31 | |
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| 32 | import xml {xmlobj path} { |
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[2138] | 33 | attr import $xmlobj $path |
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[2134] | 34 | import_string [$xmlobj get $path.current] |
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| 35 | } |
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| 36 | |
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| 37 | export xml {xmlobj path} { |
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| 38 | set v [expr {($_val) ? "true" : "false"}] |
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| 39 | $xmlobj put $path $v |
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| 40 | } |
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| 41 | |
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| 42 | import string {val} { |
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| 43 | if {[string is boolean -strict $val]} { |
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| 44 | set _val $val |
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| 45 | } else { |
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| 46 | error "don't recognize value" |
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[1728] | 47 | } |
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| 48 | } |
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[2134] | 49 | |
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| 50 | export string {var} { |
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| 51 | upvar $var v |
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| 52 | set v [expr {($_val) ? "true" : "false"}] |
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| 53 | } |
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| 54 | |
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| 55 | compare { |
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| 56 | if {$_val && !$_val2} { |
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| 57 | return 1 |
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| 58 | } elseif {!$_val && $_val} { |
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| 59 | return -1 |
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[1728] | 60 | } |
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[2134] | 61 | return 0 |
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[1728] | 62 | } |
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| 63 | } |
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