Apple Reference & Presen…tion Library 4 (Reseller)/Apple Ref. & Pres. Lib.v4.0.iso/3-Presentations/Markets/Education/HyperCard In Education/HyperTree/stack_-1.xml

Extensible Markup Language | 1990-04-02 | 8.0 KB | 16 lines

<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE stack PUBLIC "-//Apple, Inc.//DTD stack V 2.0//EN" "" >
<stack>
    <name>in</name>
    <id>-1</id>
    <cardCount>2</cardCount>
    <cardID>3233</cardID>
    <listID>3468</listID>
    <cantModify><false /></cantModify>
    <cantDelete><false /></cantDelete>
    <cantAbort><false /></cantAbort>
    <cardSize>
        <width>512</width>
        <height>342</height>
    </cardSize>
    <script>on domenu menu                       --// Added by Medior, Inc. 2/20/90
global RPStackName
if menu is in "Home,Quit HyperCard" and RPStackName is not empty then
set cursor to watch
put RPStackName into shortname
repeat until offset(":",shortname) = 0
delete char 1 to offset(":",shortname) of shortname
end repeat
delete last char of shortname
answer "This will return to "&shortname&"." with "Cancel" or "OK"
if it is "Cancel" then exit domenu
set cursor to watch
lock screen
go RPStackName
unlock screen with dissolve
exit domenu
else pass doMenu
end domenu

on openStack
defineStruct
set the lineSize to 1
set the pattern to 1
show message at 22,300
end openStack

on closeStack
put empty into message
set the pattern to 12
end closeStack

on openCard
global rootNode, searchPath, pathLength
if the number of card fields > 0 then
put the id of card field 1 into rootNode
else
put 0 into rootNode
end if
put empty into searchPath
put 0 into pathLength
walkTree
end openCard

on deleteCard
global searchPath, pathLength
put empty into searchPath
put 0 into pathLength
end deleteCard

on closeCard
undoPlot
put empty into field treeList
end closeCard

on defineStruct
global rootRect, rootLoc, hSpacing, vSpacing, rootLevel
put "241,148,271,163" into rootRect
put "256,155" into rootLoc
put "16,32,64,128" into hSpacing
put "30,30,30,30" into vSpacing
put 4 into rootLevel
end defineStruct

on eraseTree
global rootNode, seachPath, pathLength
choose select tool
drag from 0,0 to 512,342
doMenu "Clear Picture"
choose field tool
repeat with i = the number of card fields down to 1
click at the loc of card field i
doMenu "Clear Field"
end repeat
put 0 into rootNode
put empty into searchPath
put 0 into pathLength
choose browse tool
end eraseTree

on initPlot targetNode
global searchPath, pathLength
undoPlot
put targetNode into line 1 of searchPath
put the loc of card field id targetNode into¬
line 2 of searchPath
put 2 into pathLength
set the style of card field id targetNode to shadow
set the lineSize to 2
choose line tool
end initPlot

on termPlot
set the lineSize to 1
choose browse tool
end termPlot

on pathPlot targetNode
global searchPath, pathLength
if targetNode ≠ 0 then
add 1 to pathLength
put targetNode into line pathLength of searchPath
add 1 to pathLength
put the loc of card field id targetNode into¬
line pathLength of searchPath
set the style of card field id targetNode to shadow
drag from line pathLength - 2 of searchPath to¬
line pathLength of searchPath
end if
end pathPlot

on undoPlot
global searchPath, pathLength
if pathLength > 0 then
choose line tool
put line 1 of searchPath into targetNode
set the style of card field id targetNode to rectangle
put line 2 of searchPath into parentLoc
put 3 into pathIndex
repeat while pathIndex < pathLength
put line pathIndex of searchPath into targetNode
add 1 to pathIndex
get line pathIndex of searchPath
add 1 to pathIndex
set the style of card field id targetNode to rectangle
set the lineSize to 2
drag from parentLoc to it with optionKey
set the lineSize to 1
drag from parentLoc to it
put it into parentLoc
end repeat
put empty into searchPath
put 0 into pathLength
choose browse tool
end if
end undoPlot

function searchTree key
global rootNode, rootLevel
global parentSide, parentNode, parentLevel, targetNode
put 0 into parentSide
put 0 into parentNode
put rootLevel + 1 into parentLevel
if rootNode = 0 then
put 0 into targetNode
return "missing"
else
initPlot rootNode
if key = line 1 of card field id rootNode then
put rootNode into targetNode
return "found"
end if
end if
put rootNode into parentNode
put rootLevel into parentLevel
put 0 into targetNode
repeat while true
get line 1 of card field id parentNode
if key < it then
put 2 into parentSide
get line 2 of card field id parentNode
if it ≠ 0 then
pathPlot it
if key = line 1 of card field id it then
put it into targetNode
return "found"
else
put it into parentNode
subtract 1 from parentLevel
end if
else
return "missing"
end if
else
if key > it then
put 3 into parentSide
get line 3 of card field id parentNode
if it ≠ 0 then
pathPlot it
if key = line 1 of card field id it then
put it into targetNode
return "found"
else
put it into parentNode
subtract 1 from parentLevel
end if
else
return "missing"
end if
end if
end if
end repeat
end searchTree

function newNode nodeLoc
global rootRect
choose field tool
doMenu "New Field"
get the number of card fields
get the id of card field it
set the rect of card field id it to rootRect
set the loc of card field id it to nodeLoc
set the style of card field id it to rectangle
set the textFont of card field id it to geneva
set the textSize of card field id it to 9
set the textAlign of card field id it to center
set the lockText of card field id it to true
put 0 into line 2 of card field id it
put 0 into line 3 of card field id it
return it
end newNode

function getNodeLoc parentSide, parentNode, parentLevel
global rootLoc, hSpacing, vSpacing
if parentNode = 0 then
return rootLoc
else
put the loc of card field id parentNode into nodeLoc
get item parentLevel of vSpacing
add it to item 2 of nodeLoc
get item parentLevel of hSpacing
if parentSide = 2 then
subtract it from item 1 of nodeLoc
else
add it to item 1 of nodeLoc
end if
return nodeLoc
end if
end getNodeLoc

function makeNode parentSide, parentNode, parentLevel
global rootLoc
if parentNode = 0 then
get newNode( rootLoc )
initPlot it
return it
else
put getNodeLoc( parentSide, parentNode, parentLevel ) into nodeLoc
get newNode( nodeLoc )
put it into line parentSide of card field id parentNode
choose line tool
pathPlot it
return it
end if
end makeNode

function insertNode key
global rootNode, parentSide, parentNode, parentLevel
get searchTree( key )
if it = "found" then
termPlot
return "duplicate"
end if
if parentLevel = 0 then
termPlot
return "full"
end if
put makeNode( parentSide, parentNode, parentLevel ) into theNode
put key into line 1 of card field id theNode
if parentNode = 0 then put theNode into rootNode
termPlot
return "inserted"
end insertNode

on moveSubTree parentSide, parentNode, parentLevel, nextNode
if nextNode ≠ 0 then
put the loc of card field id nextNode into oldLoc
put getNodeLoc( parentSide, parentNode, parentLevel ) into newLoc
set the loc of card field id nextNode to newLoc
get line 2 of card field id nextNode
if it ≠ 0 then
drag from oldLoc to the loc of card field id it with optionKey
moveSubTree 2, nextNode, parentLevel - 1, it
end if
get line 3 of card field id nextNode
if it ≠ 0 then
drag from oldLoc to the loc of card field id it with optionKey
moveSubTree 3, nextNode, parentLevel - 1, it
end if
if parentNode ≠ 0 then
drag from the loc of card field id parentNode to newLoc
end if
end if
end moveSubTree

function removeNode parentSide, parentNode, parentLevel, targetNode
global rootNode
put line 1 of card field id targetNode into key
if line 2 of card field id targetNode = 0 then
put line 3 of card field id targetNode into nextNode
else
put line 2 of card field id targetNode into nextNode
end if
choose line tool
if parentNode ≠ 0 then
drag from the loc of card field id parentNode to¬
the loc of card field id targetNode with optionKey
set the lineSize to 1
end if
if nextNode ≠ 0 then
drag from the loc of card field id targetNode to¬
the loc of card field id nextNode with optionKey
end if
choose field tool
click at the loc of card field id targetNode
doMenu "Clear Field"
if parentNode ≠ 0 then
put nextNode into line parentSide of card field id parentNode
end if
if targetNode = rootNode then put nextNode into rootNode
choose line tool
moveSubTree parentSide, parentNode, parentLevel, nextNode
return key
end removeNode

on findNext
global parentSide, parentNode, parentLevel, targetNode
put "Looking for the successor to