| 1 | # ---------------------------------------------------------------------- |
|---|
| 2 | # COMPONENT: owner - manages Rappture controls |
|---|
| 3 | # |
|---|
| 4 | # This object represents an entity managing Rappture controls. |
|---|
| 5 | # It is typically a Tool, a DeviceEditor, or some other large entity |
|---|
| 6 | # that manages a Rappture XML tree. All controlling widgets are |
|---|
| 7 | # registered with an owner, and the owner propagates notifications |
|---|
| 8 | # out to clients who have an interest in a particular control. |
|---|
| 9 | # ====================================================================== |
|---|
| 10 | # AUTHOR: Michael McLennan, Purdue University |
|---|
| 11 | # Copyright (c) 2004-2005 Purdue Research Foundation |
|---|
| 12 | # |
|---|
| 13 | # See the file "license.terms" for information on usage and |
|---|
| 14 | # redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
|---|
| 15 | # ====================================================================== |
|---|
| 16 | package require Itcl |
|---|
| 17 | |
|---|
| 18 | itcl::class Rappture::ControlOwner { |
|---|
| 19 | constructor {owner} { # defined below } |
|---|
| 20 | |
|---|
| 21 | public method xml {args} |
|---|
| 22 | |
|---|
| 23 | public method load {newobj} |
|---|
| 24 | public method widgetfor {path args} |
|---|
| 25 | public method valuefor {path args} |
|---|
| 26 | public method dependenciesfor {path args} |
|---|
| 27 | public method ownerfor {path {skip ""}} |
|---|
| 28 | public method changed {path} |
|---|
| 29 | public method regularize {path} |
|---|
| 30 | public method notify {option owner args} |
|---|
| 31 | public method sync {} |
|---|
| 32 | public method tool {} |
|---|
| 33 | |
|---|
| 34 | protected method _slave {option args} |
|---|
| 35 | |
|---|
| 36 | protected variable _owner "" ;# ControlOwner containing this one |
|---|
| 37 | protected variable _path "" ;# paths within are relative to this |
|---|
| 38 | protected variable _slaves "" ;# this owner has these slaves |
|---|
| 39 | protected variable _xmlobj "" ;# Rappture XML description |
|---|
| 40 | private variable _path2widget ;# maps path => widget on this page |
|---|
| 41 | private variable _owner2paths ;# for notify: maps owner => interests |
|---|
| 42 | private variable _type2curpath ;# maps type(path) => path's current value |
|---|
| 43 | private variable _callbacks ;# for notify: maps owner/path => callback |
|---|
| 44 | private variable _dependencies ;# maps path => other paths dep on this |
|---|
| 45 | } |
|---|
| 46 | |
|---|
| 47 | # ---------------------------------------------------------------------- |
|---|
| 48 | # CONSTRUCTOR |
|---|
| 49 | # ---------------------------------------------------------------------- |
|---|
| 50 | itcl::body Rappture::ControlOwner::constructor {owner} { |
|---|
| 51 | if {"" != $owner} { |
|---|
| 52 | set parts [split $owner @] |
|---|
| 53 | set _owner [lindex $parts 0] |
|---|
| 54 | set _path [lindex $parts 1] |
|---|
| 55 | $_owner _slave add $this |
|---|
| 56 | } |
|---|
| 57 | |
|---|
| 58 | # we are adding this so notes can be used |
|---|
| 59 | # in coordination with loaders inside the load function |
|---|
| 60 | array set _type2curpath { |
|---|
| 61 | drawing all |
|---|
| 62 | choice current |
|---|
| 63 | boolean current |
|---|
| 64 | image current |
|---|
| 65 | integer current |
|---|
| 66 | loader current |
|---|
| 67 | note contents |
|---|
| 68 | number current |
|---|
| 69 | periodicelement current |
|---|
| 70 | string current |
|---|
| 71 | } |
|---|
| 72 | } |
|---|
| 73 | |
|---|
| 74 | # ---------------------------------------------------------------------- |
|---|
| 75 | # USAGE: xml <subcommand> ?<arg> <arg> ...? |
|---|
| 76 | # USAGE: xml object |
|---|
| 77 | # |
|---|
| 78 | # Used by clients to manipulate the underlying XML data for this |
|---|
| 79 | # tool. The <subcommand> can be any operation supported by a |
|---|
| 80 | # Rappture::library object. Clients can also request the XML object |
|---|
| 81 | # directly by using the "object" subcommand. |
|---|
| 82 | # ---------------------------------------------------------------------- |
|---|
| 83 | itcl::body Rappture::ControlOwner::xml {args} { |
|---|
| 84 | if {"object" == $args} { |
|---|
| 85 | return $_xmlobj |
|---|
| 86 | } |
|---|
| 87 | return [eval $_xmlobj $args] |
|---|
| 88 | } |
|---|
| 89 | |
|---|
| 90 | # ---------------------------------------------------------------------- |
|---|
| 91 | # USAGE: widgetfor <path> ?<widget>? |
|---|
| 92 | # |
|---|
| 93 | # Used by embedded widgets such as a Controls panel to register the |
|---|
| 94 | # various controls associated with this page. That way, this |
|---|
| 95 | # ControlOwner knows what widgets to look at when syncing itself |
|---|
| 96 | # to the underlying XML data. |
|---|
| 97 | # ---------------------------------------------------------------------- |
|---|
| 98 | itcl::body Rappture::ControlOwner::widgetfor {path args} { |
|---|
| 99 | # if this is a query operation, then look for the path |
|---|
| 100 | if {[llength $args] == 0} { |
|---|
| 101 | set owner [ownerfor $path] |
|---|
| 102 | if {$owner != $this && $owner != ""} { |
|---|
| 103 | return [$owner widgetfor $path] |
|---|
| 104 | } |
|---|
| 105 | if {[info exists _path2widget($path)]} { |
|---|
| 106 | return $_path2widget($path) |
|---|
| 107 | } |
|---|
| 108 | return "" |
|---|
| 109 | } |
|---|
| 110 | |
|---|
| 111 | # otherwise, associate the path with the given widget |
|---|
| 112 | set widget [lindex $args 0] |
|---|
| 113 | if {"" != $widget} { |
|---|
| 114 | if {[info exists _path2widget($path)]} { |
|---|
| 115 | error "$path already associated with widget $_path2widget($path)" |
|---|
| 116 | } |
|---|
| 117 | set _path2widget($path) $widget |
|---|
| 118 | } else { |
|---|
| 119 | catch {unset _path2widget($path)} |
|---|
| 120 | } |
|---|
| 121 | } |
|---|
| 122 | |
|---|
| 123 | # ---------------------------------------------------------------------- |
|---|
| 124 | # USAGE: valuefor <path> ?<newValue>? |
|---|
| 125 | # |
|---|
| 126 | # Used by embedded widgets such as a Loader to query or set the |
|---|
| 127 | # value of another control. With no extra args, it returns the |
|---|
| 128 | # value of the widget at the <path> in the XML. Otherwise, it |
|---|
| 129 | # sets the value of the widget to <newValue>. |
|---|
| 130 | # ---------------------------------------------------------------------- |
|---|
| 131 | itcl::body Rappture::ControlOwner::valuefor {path args} { |
|---|
| 132 | set owner [ownerfor $path] |
|---|
| 133 | |
|---|
| 134 | # if this is a query operation, then look for the path |
|---|
| 135 | if {[llength $args] == 0} { |
|---|
| 136 | if {$owner != $this && $owner != ""} { |
|---|
| 137 | return [$owner valuefor $path] |
|---|
| 138 | } |
|---|
| 139 | if {[info exists _path2widget($path)]} { |
|---|
| 140 | return [$_path2widget($path) value] |
|---|
| 141 | } |
|---|
| 142 | # can't find the path? try removing the prefix for this owner |
|---|
| 143 | set plen [string length $_path] |
|---|
| 144 | if {[string equal -length $plen $_path $path]} { |
|---|
| 145 | set relpath [string range $path [expr {$plen+1}] end] |
|---|
| 146 | if {[info exists _path2widget($relpath)]} { |
|---|
| 147 | return [$_path2widget($relpath) value] |
|---|
| 148 | } |
|---|
| 149 | } |
|---|
| 150 | return "" |
|---|
| 151 | } |
|---|
| 152 | |
|---|
| 153 | # otherwise, set the value |
|---|
| 154 | if {$owner != $this && $owner != ""} { |
|---|
| 155 | return [eval $owner valuefor $path $args] |
|---|
| 156 | } |
|---|
| 157 | if {[llength $args] > 1} { |
|---|
| 158 | error "wrong # args: should be \"valuefor path ?newValue?\"" |
|---|
| 159 | } |
|---|
| 160 | |
|---|
| 161 | if {[info exists _path2widget($path)]} { |
|---|
| 162 | $_path2widget($path) value [lindex $args 0] |
|---|
| 163 | } else { |
|---|
| 164 | error "bad path \"$path\": should be one of [join [lsort [array names _path2widget]] {, }]" |
|---|
| 165 | } |
|---|
| 166 | } |
|---|
| 167 | |
|---|
| 168 | # ---------------------------------------------------------------------- |
|---|
| 169 | # USAGE: dependenciesfor <path> ?<path>...? |
|---|
| 170 | # |
|---|
| 171 | # Used by embedded widgets such as a Controls panel to register the |
|---|
| 172 | # various controls that are dependent on another one. If only one |
|---|
| 173 | # path is specified, then this method returns all known dependencies |
|---|
| 174 | # for the specified <path>. Otherwise, the additional <path>'s are |
|---|
| 175 | # noted as being dependent on the first <path>. |
|---|
| 176 | # ---------------------------------------------------------------------- |
|---|
| 177 | itcl::body Rappture::ControlOwner::dependenciesfor {path args} { |
|---|
| 178 | if {"" != $_owner} { |
|---|
| 179 | # |
|---|
| 180 | # Keep all dependencies at the highest level. |
|---|
| 181 | # That way, a structure can come and go, but the |
|---|
| 182 | # dependencies remain fixed in the topmost tool. |
|---|
| 183 | # |
|---|
| 184 | set plen [string length $_path] |
|---|
| 185 | if {"" != $_path && ![string equal -length $plen $_path $path]} { |
|---|
| 186 | set path $_path.$path |
|---|
| 187 | } |
|---|
| 188 | return [eval $_owner dependenciesfor $path $args] |
|---|
| 189 | } |
|---|
| 190 | |
|---|
| 191 | # if this is a query operation, then look for the path |
|---|
| 192 | if {[llength $args] == 0} { |
|---|
| 193 | if {[info exists _dependencies($path)]} { |
|---|
| 194 | return $_dependencies($path) |
|---|
| 195 | } |
|---|
| 196 | return "" |
|---|
| 197 | } |
|---|
| 198 | |
|---|
| 199 | # add new dependencies |
|---|
| 200 | if {![info exists _dependencies($path)]} { |
|---|
| 201 | set _dependencies($path) "" |
|---|
| 202 | } |
|---|
| 203 | foreach dpath $args { |
|---|
| 204 | set i [lsearch -exact $_dependencies($path) $dpath] |
|---|
| 205 | if {$i < 0} { |
|---|
| 206 | lappend _dependencies($path) $dpath |
|---|
| 207 | } |
|---|
| 208 | } |
|---|
| 209 | } |
|---|
| 210 | |
|---|
| 211 | # ---------------------------------------------------------------------- |
|---|
| 212 | # USAGE: ownerfor <path> ?<skip>? |
|---|
| 213 | # |
|---|
| 214 | # Returns the ControlOwner that directly controls the specified <path>. |
|---|
| 215 | # ---------------------------------------------------------------------- |
|---|
| 216 | itcl::body Rappture::ControlOwner::ownerfor {path {skip ""}} { |
|---|
| 217 | if {[info exists _path2widget($path)]} { |
|---|
| 218 | return $this |
|---|
| 219 | } |
|---|
| 220 | |
|---|
| 221 | # can't find the path? try removing the prefix for this owner |
|---|
| 222 | set plen [string length $_path] |
|---|
| 223 | if {[string equal -length $plen $_path $path]} { |
|---|
| 224 | set relpath [string range $path [expr {$plen+1}] end] |
|---|
| 225 | if {[info exists _path2widget($relpath)]} { |
|---|
| 226 | return $this |
|---|
| 227 | } |
|---|
| 228 | } |
|---|
| 229 | |
|---|
| 230 | # couldn't find this path? then check all subordinates |
|---|
| 231 | foreach slave $_slaves { |
|---|
| 232 | if {$slave == $skip} { |
|---|
| 233 | continue ;# skip this slave if it's already been searched |
|---|
| 234 | } |
|---|
| 235 | set rval [$slave ownerfor $path $this] |
|---|
| 236 | if {"" != $rval} { |
|---|
| 237 | return $rval |
|---|
| 238 | } |
|---|
| 239 | } |
|---|
| 240 | |
|---|
| 241 | # check the owner as a last resort |
|---|
| 242 | if {"" != $_owner && $_owner != $skip} { |
|---|
| 243 | set rval [$_owner ownerfor $path $this] |
|---|
| 244 | if {"" != $rval} { |
|---|
| 245 | return $rval |
|---|
| 246 | } |
|---|
| 247 | } |
|---|
| 248 | |
|---|
| 249 | return "" |
|---|
| 250 | } |
|---|
| 251 | |
|---|
| 252 | # ---------------------------------------------------------------------- |
|---|
| 253 | # USAGE: load <xmlobj> |
|---|
| 254 | # |
|---|
| 255 | # Loads the contents of a Rappture <xmlobj> into the controls |
|---|
| 256 | # associated with this tool. |
|---|
| 257 | # ---------------------------------------------------------------------- |
|---|
| 258 | itcl::body Rappture::ControlOwner::load {newobj} { |
|---|
| 259 | if {![Rappture::library isvalid $newobj]} { |
|---|
| 260 | error "\"$newobj\" is not a Rappture::library" |
|---|
| 261 | } |
|---|
| 262 | |
|---|
| 263 | foreach path [array names _path2widget] { |
|---|
| 264 | # the following elements do not accept "current" tags, skip them |
|---|
| 265 | set type [[tool] xml element -as type $path] |
|---|
| 266 | if {[lsearch {group separator control} $type] >= 0} { |
|---|
| 267 | continue |
|---|
| 268 | } |
|---|
| 269 | |
|---|
| 270 | set type [[tool] xml element -as type $path] |
|---|
| 271 | if {[info exists _type2curpath($type)]} { |
|---|
| 272 | if { $_type2curpath($type) == "all" } { |
|---|
| 273 | set currentpath $path |
|---|
| 274 | } else { |
|---|
| 275 | set currentpath $path.$_type2curpath($type) |
|---|
| 276 | } |
|---|
| 277 | } else { |
|---|
| 278 | # default incase i forgot an input type in _type2curpath |
|---|
| 279 | set currentpath $path.current |
|---|
| 280 | } |
|---|
| 281 | |
|---|
| 282 | # copy new value to the XML tree |
|---|
| 283 | # also copy to the widget associated with the tree |
|---|
| 284 | # |
|---|
| 285 | # we only copy the values if they existed in newobj |
|---|
| 286 | # so we don't overwrite values that were set in previous loads. |
|---|
| 287 | # this is needed for when the users specify copy.from and copy.to |
|---|
| 288 | # in a loader. in this case, _path2widget holds a list of all |
|---|
| 289 | # widgets. if there are two loaders loading two different widgets, |
|---|
| 290 | # and each loader uses the copy from/to functionality, |
|---|
| 291 | # the second load could wipe out the values set in the first load |
|---|
| 292 | # because on the second load, the copied paths from the first load no |
|---|
| 293 | # longer exist in newobj and blanks are copied to the paths |
|---|
| 294 | # in [tool] xml set by the first loader. the solution is to check |
|---|
| 295 | # newobj and see if the path exists. if the path exists, then we copy |
|---|
| 296 | # it over to [tool] xml, otherwise we ignore it. |
|---|
| 297 | if {"" != [$newobj element -as type $currentpath]} { |
|---|
| 298 | [tool] xml copy $currentpath from $newobj $currentpath |
|---|
| 299 | set val [$newobj get $currentpath] |
|---|
| 300 | if {[string length $val] > 0 |
|---|
| 301 | || [llength [$newobj children $currentpath]] == 0} { |
|---|
| 302 | $_path2widget($path) value $val |
|---|
| 303 | } else { |
|---|
| 304 | set obj [$newobj element -as object $currentpath] |
|---|
| 305 | $_path2widget($path) value $obj |
|---|
| 306 | } |
|---|
| 307 | } |
|---|
| 308 | } |
|---|
| 309 | } |
|---|
| 310 | |
|---|
| 311 | # ---------------------------------------------------------------------- |
|---|
| 312 | # USAGE: changed <path> |
|---|
| 313 | # |
|---|
| 314 | # Invoked automatically by the various widgets associated with this |
|---|
| 315 | # tool whenever their value changes. Sends notifications to any |
|---|
| 316 | # client that has registered an interest via "notify add". |
|---|
| 317 | # ---------------------------------------------------------------------- |
|---|
| 318 | itcl::body Rappture::ControlOwner::changed {path} { |
|---|
| 319 | if {"" != $_owner} { |
|---|
| 320 | set plen [string length $_path] |
|---|
| 321 | if {"" != $_path && ![string equal -length $plen $_path $path]} { |
|---|
| 322 | set path $_path.$path |
|---|
| 323 | } |
|---|
| 324 | $_owner changed $path |
|---|
| 325 | } else { |
|---|
| 326 | # send out any callback notifications |
|---|
| 327 | foreach owner [array names _owner2paths] { |
|---|
| 328 | foreach pattern $_owner2paths($owner) { |
|---|
| 329 | if {[string match $pattern $path]} { |
|---|
| 330 | uplevel #0 $_callbacks($owner/$pattern) |
|---|
| 331 | break |
|---|
| 332 | } |
|---|
| 333 | } |
|---|
| 334 | } |
|---|
| 335 | |
|---|
| 336 | # find the control panel for each dependency, and tell it |
|---|
| 337 | # to update its layout. |
|---|
| 338 | foreach cpath [dependenciesfor $path] { |
|---|
| 339 | set wv [widgetfor $cpath] |
|---|
| 340 | while {"" != $wv} { |
|---|
| 341 | set wv [winfo parent $wv] |
|---|
| 342 | if {[winfo class $wv] == "Controls"} { |
|---|
| 343 | $wv refresh |
|---|
| 344 | break |
|---|
| 345 | } |
|---|
| 346 | } |
|---|
| 347 | } |
|---|
| 348 | } |
|---|
| 349 | } |
|---|
| 350 | |
|---|
| 351 | # ---------------------------------------------------------------------- |
|---|
| 352 | # USAGE: regularize <path> |
|---|
| 353 | # |
|---|
| 354 | # Clients use this to get a full, regularized path for the specified |
|---|
| 355 | # <path>, which may be relative to the current owner. |
|---|
| 356 | # ---------------------------------------------------------------------- |
|---|
| 357 | itcl::body Rappture::ControlOwner::regularize {path} { |
|---|
| 358 | set owner [ownerfor $path] |
|---|
| 359 | if {$owner != $this && $owner != ""} { |
|---|
| 360 | return [$owner regularize $path] |
|---|
| 361 | } |
|---|
| 362 | set rpath "" |
|---|
| 363 | if {"" != $_xmlobj} { |
|---|
| 364 | set rpath [$_xmlobj element -as path $path] |
|---|
| 365 | |
|---|
| 366 | # can't find the path? try removing the prefix for this owner |
|---|
| 367 | if {"" == $rpath} { |
|---|
| 368 | set plen [string length $_path] |
|---|
| 369 | if {[string equal -length $plen $_path $path]} { |
|---|
| 370 | set relpath [string range $path [expr {$plen+2}] end] |
|---|
| 371 | set rpath [$_xmlobj element -as path $relpath] |
|---|
| 372 | } |
|---|
| 373 | } |
|---|
| 374 | |
|---|
| 375 | if {"" != $rpath && "" != $_path} { |
|---|
| 376 | # return a full name for the path |
|---|
| 377 | set rpath "$_path.$rpath" |
|---|
| 378 | } |
|---|
| 379 | } |
|---|
| 380 | return $rpath |
|---|
| 381 | } |
|---|
| 382 | |
|---|
| 383 | # ---------------------------------------------------------------------- |
|---|
| 384 | # USAGE: notify add <owner> <path> <callback> |
|---|
| 385 | # USAGE: notify info ?<owner>? ?<path>? |
|---|
| 386 | # USAGE: notify remove <owner> ?<path> ...? |
|---|
| 387 | # |
|---|
| 388 | # Clients use this to request notifications about changes to a |
|---|
| 389 | # particular <path> for a control under this tool. Whenever the |
|---|
| 390 | # value associated with <path> changes, the client identified by |
|---|
| 391 | # <owner> is sent a message by invoking its <callback> routine. |
|---|
| 392 | # |
|---|
| 393 | # Notifications can be silenced by calling the "notify remove" |
|---|
| 394 | # function. |
|---|
| 395 | # ---------------------------------------------------------------------- |
|---|
| 396 | itcl::body Rappture::ControlOwner::notify {option args} { |
|---|
| 397 | switch -- $option { |
|---|
| 398 | add { |
|---|
| 399 | if {[llength $args] != 3} { |
|---|
| 400 | error "wrong # args: should be \"notify add owner path callback\"" |
|---|
| 401 | } |
|---|
| 402 | set owner [lindex $args 0] |
|---|
| 403 | set path [lindex $args 1] |
|---|
| 404 | set cb [lindex $args 2] |
|---|
| 405 | |
|---|
| 406 | if {[info exists _owner2paths($owner)]} { |
|---|
| 407 | set plist $_owner2paths($owner) |
|---|
| 408 | } else { |
|---|
| 409 | set plist "" |
|---|
| 410 | } |
|---|
| 411 | |
|---|
| 412 | set i [lsearch -exact $plist $path] |
|---|
| 413 | if {$i < 0} { lappend _owner2paths($owner) $path } |
|---|
| 414 | set _callbacks($owner/$path) $cb |
|---|
| 415 | } |
|---|
| 416 | info { |
|---|
| 417 | if {[llength $args] == 0} { |
|---|
| 418 | # no args? then return all owners |
|---|
| 419 | return [array names _owner2paths] |
|---|
| 420 | } else { |
|---|
| 421 | set owner [lindex $args 0] |
|---|
| 422 | if {[info exists _owner2paths($owner)]} { |
|---|
| 423 | set plist $_owner2paths($owner) |
|---|
| 424 | } else { |
|---|
| 425 | set plist "" |
|---|
| 426 | } |
|---|
| 427 | if {[llength $args] == 1} { |
|---|
| 428 | # 1 arg? then return paths for this owner |
|---|
| 429 | return $plist |
|---|
| 430 | } elseif {[llength $args] == 2} { |
|---|
| 431 | # 2 args? then return callback for this path |
|---|
| 432 | set path [lindex $args 1] |
|---|
| 433 | if {[info exists _callbacks($owner/$path)]} { |
|---|
| 434 | return $_callbacks($owner/$path) |
|---|
| 435 | } |
|---|
| 436 | return "" |
|---|
| 437 | } else { |
|---|
| 438 | error "wrong # args: should be \"notify info ?owner? ?path?\"" |
|---|
| 439 | } |
|---|
| 440 | } |
|---|
| 441 | } |
|---|
| 442 | remove { |
|---|
| 443 | if {[llength $args] < 1} { |
|---|
| 444 | error "wrong # args: should be \"notify remove owner ?path ...?\"" |
|---|
| 445 | } |
|---|
| 446 | set owner [lindex $args 0] |
|---|
| 447 | |
|---|
| 448 | if {[llength $args] == 1} { |
|---|
| 449 | # no args? then delete all paths for this owner |
|---|
| 450 | if {[info exists _owner2paths($owner)]} { |
|---|
| 451 | set plist $_owner2paths($owner) |
|---|
| 452 | } else { |
|---|
| 453 | set plist "" |
|---|
| 454 | } |
|---|
| 455 | } else { |
|---|
| 456 | set plist [lrange $args 1 end] |
|---|
| 457 | } |
|---|
| 458 | |
|---|
| 459 | # forget about the callback for each path |
|---|
| 460 | foreach path $plist { |
|---|
| 461 | catch {unset _callbacks($owner/$path)} |
|---|
| 462 | |
|---|
| 463 | if {[info exists _owner2paths($owner)]} { |
|---|
| 464 | set i [lsearch -exact $_owner2paths($owner) $path] |
|---|
| 465 | if {$i >= 0} { |
|---|
| 466 | set _owner2paths($owner) \ |
|---|
| 467 | [lreplace $_owner2paths($owner) $i $i] |
|---|
| 468 | } |
|---|
| 469 | } |
|---|
| 470 | } |
|---|
| 471 | } |
|---|
| 472 | } |
|---|
| 473 | } |
|---|
| 474 | |
|---|
| 475 | # ---------------------------------------------------------------------- |
|---|
| 476 | # USAGE: sync |
|---|
| 477 | # |
|---|
| 478 | # Used by descendents such as a Controls panel to register the |
|---|
| 479 | # various controls associated with this page. That way, this |
|---|
| 480 | # ControlOwner knows what widgets to look at when syncing itself |
|---|
| 481 | # to the underlying XML data. |
|---|
| 482 | # ---------------------------------------------------------------------- |
|---|
| 483 | itcl::body Rappture::ControlOwner::sync {} { |
|---|
| 484 | # sync all of the widgets under control of this owner |
|---|
| 485 | if {"" != $_xmlobj} { |
|---|
| 486 | foreach path [lsort [array names _path2widget]] { |
|---|
| 487 | set type [$_xmlobj element -as type $path] |
|---|
| 488 | if {[lsearch {group separator control note} $type] >= 0} { |
|---|
| 489 | continue |
|---|
| 490 | } |
|---|
| 491 | $_xmlobj put $path.current [$_path2widget($path) value] |
|---|
| 492 | } |
|---|
| 493 | } |
|---|
| 494 | |
|---|
| 495 | # sync all subordinate slaves as well |
|---|
| 496 | foreach slave $_slaves { |
|---|
| 497 | $slave sync |
|---|
| 498 | } |
|---|
| 499 | } |
|---|
| 500 | |
|---|
| 501 | # ---------------------------------------------------------------------- |
|---|
| 502 | # USAGE: tool |
|---|
| 503 | # |
|---|
| 504 | # Clients use this to figure out which tool is associated with |
|---|
| 505 | # this object. If there is no parent ControlOwner, then this |
|---|
| 506 | # must be the top-level tool. |
|---|
| 507 | # ---------------------------------------------------------------------- |
|---|
| 508 | itcl::body Rappture::ControlOwner::tool {} { |
|---|
| 509 | if {"" != $_owner} { |
|---|
| 510 | return [$_owner tool] |
|---|
| 511 | } |
|---|
| 512 | return $this |
|---|
| 513 | } |
|---|
| 514 | |
|---|
| 515 | # ---------------------------------------------------------------------- |
|---|
| 516 | # USAGE: _slave add <newobj>... |
|---|
| 517 | # |
|---|
| 518 | # Used internally to register the parent-child relationship whenever |
|---|
| 519 | # one ControlOwner is registered to another. When the parent syncs, |
|---|
| 520 | # it causes all of its children to sync. When a name is being |
|---|
| 521 | # resolved, it is resolved locally first, then up to the parent for |
|---|
| 522 | # further resolution. |
|---|
| 523 | # ---------------------------------------------------------------------- |
|---|
| 524 | itcl::body Rappture::ControlOwner::_slave {option args} { |
|---|
| 525 | switch -- $option { |
|---|
| 526 | add { |
|---|
| 527 | eval lappend _slaves $args |
|---|
| 528 | } |
|---|
| 529 | default { |
|---|
| 530 | error "bad option \"$option\": should be add" |
|---|
| 531 | } |
|---|
| 532 | } |
|---|
| 533 | } |
|---|
