added hierlist methods
svn: r43
This commit is contained in:
Matthew Flatt
parent
d878d6d8de
commit
589799f291
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@ -93,10 +93,26 @@ New methods:
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> select-last :: (send a-list select-last)
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> select-in :: (send a-list select-in)
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> select-out :: (send a-list select-out)
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> select :: (send a-list select i)
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> click-select :: (send a-list select i)
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> page-up :: (send a-list page-up)
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> page-down :: (send a-list page-down)
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- Move the selection and scroll
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- Move the selection, scroll, and call on-select
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> select :: (send a-list select i)
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- Like `click-select', but does not call `on-select'
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unless `on-select' is always called (see `on-select-always')
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> on-select-always :: (send on-select-always)
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> on-select-always :: (send on-select-always on?)
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- Gets/sets whether the `on-select' method is called in
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response to `select' (as opposed to `click-select');
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the default is #t
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> allow-deselect :: (send allow-deselect)
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> allow-deselect :: (send allow-deselect on?)
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- Gets/sets whether the `select' can be used with a #f
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argument to deselect the current item (leaving none
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selected); the default is #f
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--------------------------------------------------
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@ -109,8 +125,11 @@ New methods:
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> is-selected? :: (send an-item is-selected?) - returns #t or #f
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> select :: (send an-item select on?) - selects or deselects the
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item; hierarchical-list%'s on-select is called
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> click-select :: (send an-item select on?) - selects or deselects
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the item; hierarchical-list%'s `on-select' is called; see also
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`allow-deselect'
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> select :: (send an-item select on?) - like `click-select',
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but `on-select' might not be called; see `on-select-always'
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> user-data :: (send an-item user-data) - returns user data;
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initialized to #f
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@ -147,8 +147,8 @@
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(send item-keymap add-function "mouse-select"
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(lambda (edit event) (when (send event button-down?)
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(send edit select #t)
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; To handle hypertext clicks:
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(send edit click-select #t)
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;; To handle hypertext clicks:
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(send edit on-default-event event))))
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(send item-keymap add-function "mouse-double-select"
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(lambda (edit event) (when (send event button-down?)
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@ -185,6 +185,7 @@
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[is-selected? (lambda () (send (get-editor) is-selected?))]
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[select (lambda (on?) (send snip select on?))]
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[click-select (lambda (on?) (send snip click-select on?))]
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[scroll-to (lambda () (let* ([admin (send snip get-admin)]
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[dc (send admin get-dc)]
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[h-box (box 0.0)])
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@ -307,11 +308,14 @@
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(send dc draw-rectangle (+ dx left 1) (+ dy top_ 1) (- right left 2) (- bottom top_ 2)))
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(send dc set-pen p)
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(send dc set-brush b))))])
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(private
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[do-select (lambda (on? clicked?)
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(unless (eq? (not selected?)
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(not on?))
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(top-select (if on? item #f) snip clicked?)))])
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(public
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[select (lambda (on?)
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(unless (eq? (not selected?)
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(not on?))
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(top-select (if on? item #f) snip)))]
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[select (lambda (on?) (do-select on? #f))]
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[click-select (lambda (on?) (do-select on? #t))]
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[double-select (lambda () (send top on-double-select item))]
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[select-prev (lambda () (send top select-prev))])
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(override
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@ -454,6 +458,7 @@
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[get-parent (lambda () parent)]
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[get-item-text% (lambda () hierarchical-item-text%)]
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[select (lambda (on?) (send item-buffer select on?))]
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[click-select (lambda (on?) (send item-buffer click-select on?))]
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[deselect-all (lambda () (select #f))]
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[show-select (lambda (on?) (send item-buffer show-select on?))]
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[get-item-buffer (lambda () item-buffer)]
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@ -488,10 +493,8 @@
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[get-title-text% (lambda () hierarchical-item-text%)]
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[get-content-text% (lambda () hierarchical-list-text%)]
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[get-arrow-snip% (lambda () arrow-snip%)]
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[select (lambda (on?)
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(if on?
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(send title-buffer select #t)
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(send title-buffer select #f)))]
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[select (lambda (on?) (send title-buffer select on?))]
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[click-select (lambda (on?) (send title-buffer click-select on?))]
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[deselect-all (lambda ()
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(select #f)
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(send content-buffer deselect-all))]
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@ -655,7 +658,7 @@
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[parent-snip
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(let ([parent (send parent-snip get-item)])
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(when (send parent get-allow-selection?)
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(send parent select #t)
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(send parent click-select #t)
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(send parent scroll-to)))]
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[else
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(void)]))))]
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@ -667,7 +670,7 @@
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(send selected open)
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(let ([items (send selected-item get-items)])
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(unless (null? items)
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(send (car items) select #t)
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(send (car items) click-select #t)
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(send (car items) scroll-to)))
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(send edit-sequence-text end-edit-sequence))]
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[else (void)]))]
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@ -675,18 +678,21 @@
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[select-prev (lambda () (move -1))]
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[select-first (lambda () (let ([l (get-items)])
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(unless (null? l)
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(send (car l) select #t)
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(send (car l) click-select #t)
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(send (car l) scroll-to))))]
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[select-last (lambda () (let loop ([l (get-items)])
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(cond
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[(null? l) (void)]
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[(null? (cdr l))
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(send (car l) select #t)
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(send (car l) click-select #t)
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(send (car l) scroll-to)]
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[else (loop (cdr l))])))]
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[select (lambda (i)
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(send i select #t)
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(send i scroll-to))]
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[click-select (lambda (i)
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(send i click-select #t)
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(send i scroll-to))]
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[page-up (lambda () (page 'up))]
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[page-down (lambda () (page 'down))]
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[show-focus
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@ -751,7 +757,7 @@
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(when (< -1 pos (length l))
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(let ([i (vector-ref vec pos)])
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(when (send i get-allow-selection?)
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(send i select #t)
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(send i click-select #t)
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(send i scroll-to)))))
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(let ([y-box (box 0.0)]
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[x-box (box 0.0)]
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@ -778,14 +784,25 @@
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(max 0 (- (unbox sbox) len))
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(min (sub1 (length items)) (+ (unbox ebox) len)))]
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[i (list-ref items l)])
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(send i select #t)
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(send i click-select #t)
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(send i scroll-to)))))
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(send top-buffer move-position dir #f 'page)))])
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(private-field
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[selectable? #t]
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[show-focus? #f])
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[show-focus? #f]
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[on-select-always? #t]
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[allow-deselect? #f])
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(public
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[on-select-always
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(case-lambda
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[() on-select-always?]
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[(v) (set! on-select-always? (and v #t))])]
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[allow-deselect
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(case-lambda
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[() allow-deselect?]
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[(v) (set! allow-deselect? (and v #t))])])
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(private
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[do-select (lambda (item s)
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[do-select (lambda (item s clicked?)
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(cond
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[(and selectable?
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item
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@ -795,11 +812,20 @@
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(set! selected (if item s #f))
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(set! selected-item item)
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(when selected (send selected show-select #t))
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(on-select item))]
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[item
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(on-click item)]))])
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(when (or clicked? on-select-always?)
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(on-select item)))]
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[(and item
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clicked?)
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(on-click item)]
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[allow-deselect?
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(when selected-item
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(send selected show-select #f)
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(set! selected #f)
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(set! selected-item #f))
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(when (or clicked? on-select-always?)
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(on-select #f))]))])
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(private-field
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[top-buffer (make-object hierarchical-list-text% this (lambda (i s) (do-select i s)) 0 #f)]
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[top-buffer (make-object hierarchical-list-text% this (lambda (i s c?) (do-select i s c?)) 0 #f)]
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[selected #f]
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[selected-item #f])
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(sequence
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