;;======================================================================
;; Copyright 2006-2013, Matthew Welland.
;;
;; This program is made available under the GNU GPL version 2.0 or
;; greater. See the accompanying file COPYING for details.
;;
;; This program is distributed WITHOUT ANY WARRANTY; without even the
;; implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;; PURPOSE.
;;======================================================================
(use format)
(require-library iup)
(import (prefix iup iup:))
(use canvas-draw)
(use sqlite3 srfi-1 posix regex regex-case srfi-69)
(import (prefix sqlite3 sqlite3:))
(declare (unit tree))
(declare (uses margs))
(declare (uses launch))
(declare (uses megatest-version))
(declare (uses gutils))
(declare (uses db))
(declare (uses server))
(declare (uses synchash))
(declare (uses dcommon))
(include "common_records.scm")
(include "db_records.scm")
(include "key_records.scm")
;;======================================================================
;; T R E E S T U F F
;;======================================================================
;; path is a list of nodes, each the child of the previous
;; this routine returns the id so another node can be added
;; either as a leaf or as a branch
;;
;; BUG: This needs a stop sensor for when a branch is exhausted
;;
(define (tree:find-node obj path)
;; start at the base of the tree
(if (null? path)
#f ;; or 0 ????
(let loop ((hed (car path))
(tal (cdr path))
(depth 0)
(nodenum 0))
;; nodes in iup tree are 100% sequential so iterate over nodenum
(if (iup:attribute obj (conc "DEPTH" nodenum)) ;; end when no more nodes
(let ((node-depth (string->number (iup:attribute obj (conc "DEPTH" nodenum))))
(node-title (iup:attribute obj (conc "TITLE" nodenum))))
(if (and (equal? depth node-depth)
(equal? hed node-title)) ;; yep, this is the one!
(if (null? tal) ;; end of the line
nodenum
(loop (car tal)(cdr tal)(+ depth 1)(+ 1 nodenum)))
;; this is the case where we found part of the hierarchy but not
;; all of it, i.e. the node-depth went from deep to less deep
(if (> depth node-depth) ;; (+ 1 node-depth))
#f
(loop hed tal depth (+ nodenum 1)))))
#f))))
;; top is the top node name zeroeth node VALUE=0
(define (tree:add-node obj top nodelst #!key (userdata #f))
(if (not (iup:attribute obj "TITLE0"))
(iup:attribute-set! obj "ADDBRANCH0" top))
(cond
((not (string=? top (iup:attribute obj "TITLE0")))
(print "ERROR: top name " top " doesn't match " (iup:attribute obj "TITLE0")))
((null? nodelst))
(else
(let loop ((hed (car nodelst))
(tal (cdr nodelst))
(depth 1)
(pathl (list top)))
;; Because the tree dialog changes node numbers when
;; nodes are added or removed we must look up nodes
;; each and every time. 0 is the top node so default
;; to that.
(let* ((newpath (append pathl (list hed)))
(parentnode (tree:find-node obj pathl))
(nodenum (tree:find-node obj newpath)))
;; Add the branch under lastnode if not found
(if (not nodenum)
(begin
(iup:attribute-set! obj (conc "ADDBRANCH" parentnode) hed)
(if userdata
(iup:attribute-set! obj (conc "USERDATA" parentnode) userdata))
(if (null? tal)
#t
;; reset to top
(loop (car nodelst)(cdr nodelst) 1 (list top))))
(if (null? tal) ;; if null here then this path has already been added
#t
(loop (car tal)(cdr tal)(+ depth 1) newpath))))))))
(define (tree:node->path obj nodenum)
(let loop ((currnode 0)
(path '()))
(let* ((node-depth (string->number (iup:attribute obj (conc "DEPTH" currnode))))
(node-title (iup:attribute obj (conc "TITLE" currnode)))
(trimpath (if (and (not (null? path))
(> (length path) node-depth))
(take path node-depth)
path))
(newpath (append trimpath (list node-title))))
(if (>= currnode nodenum)
newpath
(loop (+ currnode 1)
newpath)))))