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added hierlist methods

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svn: r43

original commit: 589799f2910ab2f85ca075b321c0e8e53da26b38
This commit is contained in:
Matthew Flatt 2005-06-01 22:44:02 +00:00
parent b92ec523b8
commit f35c232ce7
1 changed files with 48 additions and 22 deletions
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70
collects/hierlist/hierlist-unit.ss
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@ -147,8 +147,8 @@
(send item-keymap add-function "mouse-select"
(lambda (edit event) (when (send event button-down?)
(send edit select #t)
; To handle hypertext clicks:
(send edit click-select #t)
;; To handle hypertext clicks:
(send edit on-default-event event))))
(send item-keymap add-function "mouse-double-select"
(lambda (edit event) (when (send event button-down?)
@ -185,6 +185,7 @@
[is-selected? (lambda () (send (get-editor) is-selected?))]
[select (lambda (on?) (send snip select on?))]
[click-select (lambda (on?) (send snip click-select on?))]
[scroll-to (lambda () (let* ([admin (send snip get-admin)]
[dc (send admin get-dc)]
[h-box (box 0.0)])
@ -307,11 +308,14 @@
(send dc draw-rectangle (+ dx left 1) (+ dy top_ 1) (- right left 2) (- bottom top_ 2)))
(send dc set-pen p)
(send dc set-brush b))))])
(private
[do-select (lambda (on? clicked?)
(unless (eq? (not selected?)
(not on?))
(top-select (if on? item #f) snip clicked?)))])
(public
[select (lambda (on?)
(unless (eq? (not selected?)
(not on?))
(top-select (if on? item #f) snip)))]
[select (lambda (on?) (do-select on? #f))]
[click-select (lambda (on?) (do-select on? #t))]
[double-select (lambda () (send top on-double-select item))]
[select-prev (lambda () (send top select-prev))])
(override
@ -454,6 +458,7 @@
[get-parent (lambda () parent)]
[get-item-text% (lambda () hierarchical-item-text%)]
[select (lambda (on?) (send item-buffer select on?))]
[click-select (lambda (on?) (send item-buffer click-select on?))]
[deselect-all (lambda () (select #f))]
[show-select (lambda (on?) (send item-buffer show-select on?))]
[get-item-buffer (lambda () item-buffer)]
@ -488,10 +493,8 @@
[get-title-text% (lambda () hierarchical-item-text%)]
[get-content-text% (lambda () hierarchical-list-text%)]
[get-arrow-snip% (lambda () arrow-snip%)]
[select (lambda (on?)
(if on?
(send title-buffer select #t)
(send title-buffer select #f)))]
[select (lambda (on?) (send title-buffer select on?))]
[click-select (lambda (on?) (send title-buffer click-select on?))]
[deselect-all (lambda ()
(select #f)
(send content-buffer deselect-all))]
@ -655,7 +658,7 @@
[parent-snip
(let ([parent (send parent-snip get-item)])
(when (send parent get-allow-selection?)
(send parent select #t)
(send parent click-select #t)
(send parent scroll-to)))]
[else
(void)]))))]
@ -667,7 +670,7 @@
(send selected open)
(let ([items (send selected-item get-items)])
(unless (null? items)
(send (car items) select #t)
(send (car items) click-select #t)
(send (car items) scroll-to)))
(send edit-sequence-text end-edit-sequence))]
[else (void)]))]
@ -675,18 +678,21 @@
[select-prev (lambda () (move -1))]
[select-first (lambda () (let ([l (get-items)])
(unless (null? l)
(send (car l) select #t)
(send (car l) click-select #t)
(send (car l) scroll-to))))]
[select-last (lambda () (let loop ([l (get-items)])
(cond
[(null? l) (void)]
[(null? (cdr l))
(send (car l) select #t)
(send (car l) click-select #t)
(send (car l) scroll-to)]
[else (loop (cdr l))])))]
[select (lambda (i)
(send i select #t)
(send i scroll-to))]
[click-select (lambda (i)
(send i click-select #t)
(send i scroll-to))]
[page-up (lambda () (page 'up))]
[page-down (lambda () (page 'down))]
[show-focus
@ -751,7 +757,7 @@
(when (< -1 pos (length l))
(let ([i (vector-ref vec pos)])
(when (send i get-allow-selection?)
(send i select #t)
(send i click-select #t)
(send i scroll-to)))))
(let ([y-box (box 0.0)]
[x-box (box 0.0)]
@ -778,14 +784,25 @@
(max 0 (- (unbox sbox) len))
(min (sub1 (length items)) (+ (unbox ebox) len)))]
[i (list-ref items l)])
(send i select #t)
(send i click-select #t)
(send i scroll-to)))))
(send top-buffer move-position dir #f 'page)))])
(private-field
[selectable? #t]
[show-focus? #f])
[show-focus? #f]
[on-select-always? #t]
[allow-deselect? #f])
(public
[on-select-always
(case-lambda
[() on-select-always?]
[(v) (set! on-select-always? (and v #t))])]
[allow-deselect
(case-lambda
[() allow-deselect?]
[(v) (set! allow-deselect? (and v #t))])])
(private
[do-select (lambda (item s)
[do-select (lambda (item s clicked?)
(cond
[(and selectable?
item
@ -795,11 +812,20 @@
(set! selected (if item s #f))
(set! selected-item item)
(when selected (send selected show-select #t))
(on-select item))]
[item
(on-click item)]))])
(when (or clicked? on-select-always?)
(on-select item)))]
[(and item
clicked?)
(on-click item)]
[allow-deselect?
(when selected-item
(send selected show-select #f)
(set! selected #f)
(set! selected-item #f))
(when (or clicked? on-select-always?)
(on-select #f))]))])
(private-field
[top-buffer (make-object hierarchical-list-text% this (lambda (i s) (do-select i s)) 0 #f)]
[top-buffer (make-object hierarchical-list-text% this (lambda (i s c?) (do-select i s c?)) 0 #f)]
[selected #f]
[selected-item #f])
(sequence