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hierarchy-frame.ss
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hierarchy-frame.ss
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#lang scheme/gui
;; ##################################################################################
;; # ============================================================================== #
;; # hierarchy-frame.ss #
;; # http://mred-designer.origo.ethz.ch #
;; # Copyright (C) Laurent Orseau, 2010 #
;; # ============================================================================== #
;; # #
;; # This program is free software; you can redistribute it and/or #
;; # modify it under the terms of the GNU General Public License #
;; # as published by the Free Software Foundation; either version 2 #
;; # of the License, or (at your option) any later version. #
;; # #
;; # This program is distributed in the hope that it will be useful, #
;; # but WITHOUT ANY WARRANTY; without even the implied warranty of #
;; # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
;; # GNU General Public License for more details. #
;; # #
;; # You should have received a copy of the GNU General Public License #
;; # along with this program; if not, write to the Free Software #
;; # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. #
;; # #
;; ##################################################################################
(require "mreddesigner-misc.ss"
mrlib/hierlist)
(define/provide hierarchy-frame #f)
(define/provide hierarchy-widget #f)
(define on-select-callback #f)
(define delete-callback #f)
(define/provide (make-hierarchy-frame
parent
#:on-select-callback on-select-cb
#:delete-callback delete-cb
#:move-up-callback move-up-cb
#:move-down-callback move-down-cb
#:cut-callback cut-callback
#:copy-callback copy-callback
#:paste-callback paste-callback
#:show/hide-callback show/hide-callback
)
(set! on-select-callback on-select-cb)
(set! hierarchy-frame
(new frame%
[label "Hierarchy"]
[parent parent]
[x 5]
[y 405]
[min-width 250]
[min-height 400]
))
(let ([hp (new horizontal-panel%
[parent hierarchy-frame]
[stretchable-height #f])])
(new button% [parent hp] [label "Delete"]
[callback (λ _ (delete-cb))])
(new button% [parent hp] [label "Cut"]
[callback (λ _ (cut-callback))])
(new button% [parent hp] [label "Copy"]
[callback (λ _ (copy-callback))])
(new button% [parent hp] [label "Paste"]
[callback (λ _ (paste-callback))])
(new button% [parent hp] [label "Show/Hide"]
[callback (λ _ (show/hide-callback))])
(new button% [parent hp] [label (image-file->bitmap "hierarchy-up.png")]
[callback (λ _ (move-up-cb))])
(new button% [parent hp] [label (image-file->bitmap "hierarchy-down.png")]
[callback (λ _ (move-down-cb))])
)
(set! hierarchy-widget
(new mred-id-hlist%
[parent hierarchy-frame]
[style '(auto-vscroll auto-hscroll)]
))
)
(define/provide (show-hierarchy-frame)
(send hierarchy-frame show #t))
;;; Generic function for hierarchical-list-items
;; Sets the item with a given label and an associated data.
;; Now not so generic...
(define (set-hlist-item-label item label [data (send item user-data)])
(send item user-data data)
(let ([ed (send item get-editor)])
(send ed erase)
(send ed insert (make-object image-snip%
(send (send data get-plugin) get-icon-bitmap)))
(send ed insert label)
item))
(define (hlist-add-item hl label [data #f])
(let ([it (send hl new-item)])
(set-hlist-item-label it label data)
it))
(define (hlist-add-hlc hl label [data #f])
(let ([it (send hl new-list)])
(set-hlist-item-label it label data)
it))
(define mred-id-hlist%
(class hierarchical-list%
(super-new)
; do not call on-select when select is called:
(send this on-select-always #f)
(define mred-id-items (make-hash))
(define (get-mred-id-item mid)
(hash-ref mred-id-items mid #f))
(define (add-mred-id-item mid it)
(set-hlist-item-label it (->string (send mid get-id)) mid)
(hash-set! mred-id-items mid it))
(define (remove-mred-id-item mid)
(hash-remove! mred-id-items mid))
(define (replace-mred-id-item mid new-it)
(debug-printf "replace-mred-id-item: ~a ~a\n" mid new-it)
; WATCH OUT! prevents from Garbage Collecting if entries are not deleted!
(hash-set! mred-id-items mid new-it)
)
(inherit get-selected select delete-item)
; Add wrapper around add-child to bracket changes with begin/end edit/container sequences - kdh 2012-02-29
(define/public (add-children mid [parent (get-selected)])
(debug-printf "add-children: ~a ~a\n" mid parent)
(send hierarchy-frame begin-container-sequence)
(send (send this get-editor) begin-edit-sequence #f)
(add-child mid parent)
(send (send this get-editor) end-edit-sequence)
(send hierarchy-frame end-container-sequence)
(debug-printf "add-children: exit\n")
)
;; Recursively adds a child and its children to the given hlist parent.
;; If parent is #f, then the parent is the hierarchy-list itself.
; Alter add-child to enforce access through add-children wrapper - kdh 2012-02-29
(define (add-child mid parent)
(let* ([parent (or parent this)]
[mred-children (send mid get-mred-children)]
[it (if #t; ALWAYS! (much simpler...) ;(is-a? (send mid get-widget) area-container<%>)
; add compound
(let ([new-hlc (send parent new-list)])
; if the mred-id has children, add them too:
(unless (empty? mred-children)
(for-each (λ(c)(add-child c new-hlc)) mred-children))
; Open the list only after adding all the children - kdh 2012-02-29
(send new-hlc open)
; return the hlist:
new-hlc)
; else simply add an item:
(send parent new-item)
)]
)
(add-mred-id-item mid it)
)
)
(define/override (on-select i)
(on-select-callback (send i user-data)))
(define/public (set-selected-mred-id w)
(when w
(select (get-mred-id-item w))))
(define/public (update-current-mred-id)
(let* ([it (get-selected)]
[mid (send it user-data)])
(set-hlist-item-label it (->string (send mid get-id)))))
;; Finds the parent hierarchy-list-compound-item<%> of the given item.
(define/public (find-parent it [hlist this])
(cond [(not (or (is-a? hlist hierarchical-list-compound-item<%>)
(is-a? hlist hierarchical-list%)))
#f]
[(memq it (send hlist get-items))
hlist]
[else (ormap (λ(i)(find-parent it i))
(send hlist get-items))]))
(define/public (delete-mred-id mid)
(let* ([it (get-mred-id-item mid)]
[it-parent (find-parent it)])
(if it-parent
(send it-parent delete-item it)
(printf "ERROR: it not found!\n"))
(remove-mred-id-item mid)
))
(define/public (change-children hlist [changer (λ (l) l)])
; Bracket changes to hierarchy list with begin/end edit/container sequences - kdh 2012-02-29
(debug-printf "change-children: enter\n")
(send hierarchy-frame begin-container-sequence)
(send (send this get-editor) begin-edit-sequence #f)
(let* ([l (send hlist get-items)]
[l2 (changer l)])
; remove all items (yes, hierarchical-list% lacks many useful features...)
(map (λ (it) (send hlist delete-item it)) l)
(for-each (λ (x) (let ([new-x (if (is-a? x hierarchical-list-compound-item<%>)
(send hlist new-list)
(send hlist new-item))])
(send new-x user-data (send x user-data))
(send (send x get-editor) copy-self-to (send new-x get-editor))
(replace-mred-id-item (send x user-data) new-x)
; also recreate all the following hierarchy...
(when (is-a? x hierarchical-list-compound-item<%>)
(change-children new-x (λ _ (send x get-items)))
; Open the new item only after adding all children - kdh 2012-02-29
(if (send x is-open?)
(send new-x open)
(send new-x close))
)
))
l2)
)
(send (send this get-editor) end-edit-sequence)
(send hierarchy-frame end-container-sequence)
(debug-printf "change-children: exit\n")
)
(define/public (move-item it list-mover)
; Bracket changes to hierarchy list with begin/end edit/container sequences - kdh 2012-02-29
(debug-printf "move-item:\n")
(send hierarchy-frame begin-container-sequence)
(send (send this get-editor) begin-edit-sequence #f)
(let* ([mid (send it user-data)]
[it-parent (find-parent it)])
(when it-parent
(change-children it-parent
(λ(l)(list-mover l it))))
(set-selected-mred-id mid)
)
(send (send this get-editor) end-edit-sequence)
(send hierarchy-frame end-container-sequence)
)
(define/public (move-up)
(move-item (get-selected) list-move-left))
(define/public (move-down)
(move-item (get-selected) list-move-right))
))
(define/provide (hierarchy-select w)
(send hierarchy-widget set-selected-mred-id w))