/
html-table.scm
490 lines (425 loc) · 21.7 KB
/
html-table.scm
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; html-table.scm : generate HTML programmatically, with support
;; for simple style elements.
;; Copyright 2000 Bill Gribble <grib@gnumatic.com>
;;
;; * 2004.06.18: David Montenegro, added gnc:html-table-get-cell
;;
;; 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, contact:
;;
;; Free Software Foundation Voice: +1-617-542-5942
;; 51 Franklin Street, Fifth Floor Fax: +1-617-542-2652
;; Boston, MA 02110-1301, USA gnu@gnu.org
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(use-modules (srfi srfi-2))
(use-modules (srfi srfi-9))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; NB: In this code, "markup" and "/markup" *do not* refer to
;; style information. Rather, they let you override the tag
;; associated with an html-table row or cell. Style
;; information is stored in addition to this "markup" (in
;; an entirely different record field).
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define-record-type <html-table>
(make-html-table col-headers row-headers caption data num-rows style
col-styles row-styles row-markup-table col-headers-style
row-headers-style)
html-table?
(col-headers html-table-col-headers html-table-set-col-headers!)
(row-headers html-table-row-headers html-table-set-row-headers!)
(caption html-table-caption html-table-set-caption!)
(data html-table-data html-table-set-data!)
(num-rows html-table-num-rows html-table-set-num-rows!)
(style html-table-style html-table-set-style!)
(col-styles html-table-col-styles html-table-set-col-styles!)
(row-styles html-table-row-styles html-table-set-row-styles!)
(row-markup-table html-table-row-markup-table html-table-set-row-markup-table!)
(col-headers-style html-table-col-headers-style)
(row-headers-style html-table-row-headers-style))
(define gnc:html-table? html-table?)
(define gnc:make-html-table-internal make-html-table)
(define gnc:html-table-data html-table-data)
(define gnc:html-table-set-data! html-table-set-data!)
(define gnc:html-table-caption html-table-caption)
(define gnc:html-table-set-caption! html-table-set-caption!)
(define gnc:html-table-multirow-col-headers html-table-col-headers)
(define gnc:html-table-set-multirow-col-headers! html-table-set-col-headers!)
(define gnc:html-table-style html-table-style)
(define gnc:html-table-set-style-internal! html-table-set-style!)
(define gnc:html-table-row-styles html-table-row-styles)
(define gnc:html-table-set-row-styles! html-table-set-row-styles!)
(define gnc:html-table-row-markup-table html-table-row-markup-table)
(define gnc:html-table-set-row-markup-table! html-table-set-row-markup-table!)
(define gnc:html-table-col-styles html-table-col-styles)
(define gnc:html-table-set-col-styles! html-table-set-col-styles!)
(define gnc:html-table-col-headers-style html-table-col-headers-style)
(define gnc:html-table-row-headers-style html-table-row-headers-style)
(define gnc:html-table-num-rows html-table-num-rows)
(define gnc:html-table-set-num-rows-internal! html-table-set-num-rows!)
(define-record-type <html-table-cell>
(make-html-table-cell rowspan colspan tag data style)
html-table-cell?
(rowspan html-table-cell-rowspan html-table-cell-set-rowspan!)
(colspan html-table-cell-colspan html-table-cell-set-colspan!)
(tag html-table-cell-tag html-table-cell-set-tag!)
(data html-table-cell-data html-table-cell-set-data!)
(style html-table-cell-style html-table-cell-set-style!))
(define gnc:make-html-table-cell-internal make-html-table-cell)
(define gnc:html-table-cell? html-table-cell?)
(define gnc:html-table-cell-rowspan html-table-cell-rowspan)
(define gnc:html-table-cell-set-rowspan! html-table-cell-set-rowspan!)
(define gnc:html-table-cell-colspan html-table-cell-colspan)
(define gnc:html-table-cell-set-colspan! html-table-cell-set-colspan!)
(define gnc:html-table-cell-tag html-table-cell-tag)
(define gnc:html-table-cell-set-tag! html-table-cell-set-tag!)
(define gnc:html-table-cell-data html-table-cell-data)
(define gnc:html-table-cell-set-data-internal! html-table-cell-set-data!)
(define gnc:html-table-cell-style html-table-cell-style)
(define gnc:html-table-cell-set-style-internal! html-table-cell-set-style!)
(define (gnc:make-html-table-cell . objects)
(gnc:make-html-table-cell-internal 1 1 "td" objects
(gnc:make-html-style-table)))
(define (gnc:make-html-table-cell/size rowspan colspan . objects)
(gnc:make-html-table-cell-internal rowspan colspan "td"
objects (gnc:make-html-style-table)))
(define (gnc:make-html-table-cell/markup markup . objects)
(gnc:make-html-table-cell-internal 1 1 markup objects
(gnc:make-html-style-table)))
(define (gnc:make-html-table-cell/size/markup rowspan colspan markup . objects)
(gnc:make-html-table-cell-internal rowspan colspan markup
objects (gnc:make-html-style-table)))
(define (gnc:make-html-table-cell/min-width px)
(let ((cell (gnc:make-html-table-cell)))
(gnc:html-table-cell-set-style!
cell "td" 'attribute (list "style" (format #f "min-width:~apx" px)))
cell))
(define (gnc:make-html-table-header-cell . objects)
(gnc:make-html-table-cell-internal 1 1 "th" objects
(gnc:make-html-style-table)))
(define (gnc:make-html-table-header-cell/markup markup . objects)
(gnc:make-html-table-cell-internal 1 1 markup objects
(gnc:make-html-style-table)))
(define (gnc:make-html-table-header-cell/size rowspan colspan . objects)
(gnc:make-html-table-cell-internal rowspan colspan "th"
objects (gnc:make-html-style-table)))
(define (gnc:html-table-cell-set-style! cell tag . rest)
(let ((newstyle (if (and (= (length rest) 2) (procedure? (car rest)))
(apply gnc:make-html-data-style-info rest)
(apply gnc:make-html-markup-style-info rest)))
(styletable (gnc:html-table-cell-style cell)))
(gnc:html-style-table-set! styletable tag newstyle)))
(define (gnc:html-table-cell-append-objects! cell . objects)
(gnc:html-table-cell-set-data-internal!
cell (append (gnc:html-table-cell-data cell) objects)))
(define (gnc:html-table-cell-render cell doc)
;; This function renders a html-table-cell to a document tree
;; segment. Note: if the first element in a html-table-cell data is
;; a negative number or gnc:monetary, it fixes the tag
;; eg. "number-cell" becomes "number-cell-red". The number and
;; gnc:monetary renderers do not have an automatic -neg tag
;; modifier. See bug 759005 and bug 797357.
(let* ((retval '())
(push (lambda (l) (set! retval (cons l retval))))
(cell-tag (gnc:html-table-cell-tag cell))
(cell-data (gnc:html-table-cell-data cell))
(tag (if (and (not (null? cell-data))
(not (string=? cell-tag "td"))
(or (and (gnc:gnc-monetary? (car cell-data))
(negative? (gnc:gnc-monetary-amount (car cell-data))))
(and (number? (car cell-data))
(negative? (car cell-data)))))
(string-append cell-tag "-neg")
cell-tag)))
(gnc:html-document-push-style doc (gnc:html-table-cell-style cell))
(push (gnc:html-document-markup-start
doc tag #t
(format #f "rowspan=\"~a\"" (gnc:html-table-cell-rowspan cell))
(format #f "colspan=\"~a\"" (gnc:html-table-cell-colspan cell))))
(for-each
(lambda (child)
(gnc:pulse-progress-bar)
(push (gnc:html-object-render child doc)))
cell-data)
(push (gnc:html-document-markup-end doc cell-tag))
(gnc:html-document-pop-style doc)
retval))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; <html-table> class
;; wrapper around HTML tables
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(define (gnc:make-html-table)
(gnc:make-html-table-internal
#f ;; col-headers
#f ;; row-headers
#f ;; caption
'() ;; data (stored in reverse row-major order)
0 ;; num-rows
(gnc:make-html-style-table) ;; style
(make-hash-table 21) ;; hash of col number to col-style
(make-hash-table 21) ;; hash of row number to row-style
(make-hash-table 21) ;; hash of row number to row markup
(gnc:make-html-style-table) ;; col-headers-style
(gnc:make-html-style-table) ;; row-headers-style
))
(define (gnc:html-table-set-col-headers! table col-headers)
(gnc:html-table-set-multirow-col-headers! table (list col-headers)))
(define (gnc:html-table-row-markup table row)
(hash-ref (gnc:html-table-row-markup-table table) row))
(define (gnc:html-table-set-row-markup! table row markup)
(hash-set! (gnc:html-table-row-markup-table table) row markup))
(define (gnc:html-table-set-col-headers-style! table tag . rest)
(let ((newstyle (if (and (= (length rest) 2) (procedure? (car rest)))
(apply gnc:make-html-data-style-info rest)
(apply gnc:make-html-markup-style-info rest)))
(style (gnc:html-table-col-headers-style table)))
(gnc:html-style-table-set! style tag newstyle)))
(define (gnc:html-table-set-row-headers-style! table tag . rest)
(let* ((newstyle (if (and (= (length rest) 2) (procedure? (car rest)))
(apply gnc:make-html-data-style-info rest)
(apply gnc:make-html-markup-style-info rest)))
(style (gnc:html-table-row-headers-style table)))
(gnc:html-style-table-set! style tag newstyle)))
(define (gnc:html-table-set-style! table tag . rest)
(let* ((newstyle (if (and (= (length rest) 2) (procedure? (car rest)))
(apply gnc:make-html-data-style-info rest)
(apply gnc:make-html-markup-style-info rest)))
(style (gnc:html-table-style table)))
(gnc:html-style-table-set! style tag newstyle)))
(define (gnc:html-table-set-col-style! table col tag . rest)
(let* ((newstyle (if (and (= (length rest) 2) (procedure? (car rest)))
(apply gnc:make-html-data-style-info rest)
(apply gnc:make-html-markup-style-info rest)))
(newhash #f)
(style (or (gnc:html-table-col-style table col)
(begin (set! newhash #t)
(gnc:make-html-style-table)))))
(gnc:html-style-table-set! style tag newstyle)
(if newhash (hash-set! (gnc:html-table-col-styles table) col style))))
(define (gnc:html-table-set-row-style! table row tag . rest)
(let* ((newstyle (if (and (= (length rest) 2) (procedure? (car rest)))
(apply gnc:make-html-data-style-info rest)
(apply gnc:make-html-markup-style-info rest)))
(newhash #f)
(style (or (gnc:html-table-row-style table row)
(begin (set! newhash #t)
(gnc:make-html-style-table)))))
(gnc:html-style-table-set! style tag newstyle)
(when newhash (hash-set! (gnc:html-table-row-styles table) row style))))
(define (gnc:html-table-row-style table row)
(hash-ref (gnc:html-table-row-styles table) row))
(define (gnc:html-table-col-style table col)
(hash-ref (gnc:html-table-col-styles table) col))
(define (gnc:html-table-num-columns table)
(apply max (cons 0 (map length (gnc:html-table-data table)))))
(define (gnc:html-table-append-row/markup! table markup newrow)
(let ((rownum (gnc:html-table-append-row! table newrow)))
(gnc:html-table-set-row-markup! table (- rownum 1) markup)))
(define (gnc:html-table-prepend-row/markup! table markup newrow)
(gnc:html-table-prepend-row! table newrow)
(gnc:html-table-set-row-markup! table 0 markup))
(define (gnc:html-table-append-row! table newrow)
(let* ((current-num-rows (gnc:html-table-num-rows table))
(new-num-rows (1+ current-num-rows)))
(gnc:html-table-set-num-rows-internal! table new-num-rows)
(gnc:html-table-set-data! table
(cons (if (list? newrow) newrow (list newrow))
(gnc:html-table-data table)))
new-num-rows))
(define (gnc:html-table-prepend-row! table newrow)
(let* ((new-num-rows (1+ (gnc:html-table-num-rows table)))
(newrow-list (if (list? newrow) newrow (list newrow)))
(dd (append (gnc:html-table-data table) (list newrow-list))))
(gnc:html-table-set-num-rows-internal! table new-num-rows)
(gnc:html-table-set-data! table dd)
;; have to bump up the row index of the row styles and row markup
;; table on a prepend. just another reason you probably don't
;; want to prepend.
(let ((new-rowstyles (make-hash-table 21)))
(hash-for-each
(lambda (row style)
(hash-set! new-rowstyles (+ 1 row) style))
(gnc:html-table-row-styles table))
(gnc:html-table-set-row-styles! table new-rowstyles))
(let ((new-rowmarkup (make-hash-table 21)))
(hash-for-each
(lambda (row markup)
(hash-set! new-rowmarkup (+ 1 row) markup))
(gnc:html-table-row-markup-table table))
(gnc:html-table-set-row-markup-table! table new-rowmarkup))
new-num-rows))
(define (gnc:html-table-get-cell table row col)
(and-let* ((row (gnc:html-table-get-row table row)))
(list-ref-safe row col)))
(define (gnc:html-table-get-row table row)
(and-let* ((dd (gnc:html-table-data table))
(len (length dd)))
(list-ref-safe dd (- len row 1))))
;; this function is not exported
(define (gnc:html-table-set-cell-datum! table row col datum)
(let lp ((len (length (gnc:html-table-data table))))
(cond
((< row len)
(let* ((row-loc (- len row 1))
(old-tbldata (gnc:html-table-data table))
(old-rowdata (list-ref old-tbldata row-loc))
(new-rowdata (list-set-safe! old-rowdata col datum))
(new-tbldata (list-set-safe! old-tbldata row-loc new-rowdata)))
;; add the row-data back to the table
(gnc:html-table-set-data! table new-tbldata)))
(else
(gnc:html-table-append-row! table '())
(lp (1+ len))))))
(define (gnc:html-table-set-cell! table row col . objects)
(let ((tc (if (and (= (length objects) 1) (gnc:html-table-cell? (car objects)))
(car objects)
(apply gnc:make-html-table-cell objects))))
(gnc:html-table-set-cell-datum! table row col tc)))
(define (gnc:html-table-set-cell/tag! table row col tag . objects)
(let ((tc (if (and (= (length objects) 1) (gnc:html-table-cell? (car objects)))
(car objects)
(apply gnc:make-html-table-cell objects))))
(gnc:html-table-cell-set-tag! tc tag)
(gnc:html-table-set-cell-datum! table row col tc)))
(define (gnc:html-table-append-column! table newcol)
(define width (apply max (cons 0 (map length (gnc:html-table-data table)))))
(define (add-fn a b) (list-set-safe! b width a))
(let lp ((newcol newcol)
(olddata (reverse (gnc:html-table-data table)))
(res '())
(numrows 0))
(cond
((null? newcol)
(gnc:html-table-set-num-rows-internal! table numrows)
(gnc:html-table-set-data! table res))
((null? olddata)
(lp (cdr newcol)
'()
(cons (add-fn (car newcol) '()) res)
(1+ numrows)))
(else
(lp (cdr newcol)
(cdr olddata)
(cons (add-fn (car newcol) (car olddata)) res)
(1+ numrows))))))
(define (gnc:html-table-render table doc)
(let* ((retval '())
(push (lambda (l) (set! retval (cons l retval)))))
;; compile the table style to make other compiles faster
(gnc:html-style-table-compile (gnc:html-table-style table)
(gnc:html-document-style-stack doc))
(gnc:html-document-push-style doc (gnc:html-table-style table))
(push (gnc:html-document-markup-start doc "table" #t))
;; render the caption
(let ((c (gnc:html-table-caption table)))
(when c
(push (gnc:html-document-markup-start doc "caption" #t))
(push (gnc:html-object-render c doc))
(push (gnc:html-document-markup-end doc "caption"))))
;; the first row is the column headers. Columns styles apply.
;; compile the col styles with the header style pushed; we'll
;; recompile them later, but this will have the benefit of
;; compiling in the col-header-style.
(let ((ch (gnc:html-table-multirow-col-headers table)))
(when ch
(gnc:html-document-push-style doc (gnc:html-table-col-headers-style table))
;; compile the column styles just in case there's something
;; interesting in the table header cells.
(hash-for-each
(lambda (col style)
(when style
(gnc:html-style-table-compile
style (gnc:html-document-style-stack doc))))
(gnc:html-table-col-styles table))
;; render the headers
(push (gnc:html-document-markup-start doc "thead" #t))
(for-each
(lambda (ch-row)
(push (gnc:html-document-markup-start doc "tr" #t))
(let lp ((ch-row ch-row) (colnum 0))
(unless (null? ch-row)
(let* ((hdr (car ch-row))
(table-cell? (gnc:html-table-cell? hdr))
(col-style (gnc:html-table-col-style table colnum)))
(gnc:html-document-push-style doc col-style)
(cond
(table-cell?
(push (gnc:html-object-render hdr doc)))
(else
(push (gnc:html-document-markup-start doc "th" #t))
(push (gnc:html-object-render hdr doc))
(push (gnc:html-document-markup-end doc "th"))))
(gnc:html-document-pop-style doc)
(lp (cdr ch-row)
(+ colnum
(if table-cell? (gnc:html-table-cell-colspan hdr) 1))))))
(push (gnc:html-document-markup-end doc "tr")))
ch)
(push (gnc:html-document-markup-end doc "thead"))
;; pop the col header style
(gnc:html-document-pop-style doc)))
;; recompile the column styles. We won't worry about the row
;; styles; if they're there, we may lose, but not much, and they
;; will be pretty rare (I think).
(hash-for-each
(lambda (col style)
(when style
(gnc:html-style-table-compile style (gnc:html-document-style-stack doc))))
(gnc:html-table-col-styles table))
(push (gnc:html-document-markup-start doc "tbody" #t))
;; now iterate over the rows
(let rowloop ((rows (reverse (gnc:html-table-data table))) (rownum 0))
(unless (null? rows)
(let* ((row (car rows))
(rowstyle (gnc:html-table-row-style table rownum))
(rowmarkup (or (gnc:html-table-row-markup table rownum) "tr")))
;; push the style for this row and write the start tag, then
;; pop it again.
(when rowstyle (gnc:html-document-push-style doc rowstyle))
(push (gnc:html-document-markup-start doc rowmarkup #t))
(when rowstyle (gnc:html-document-pop-style doc))
;; write the column data, pushing the right column style
;; each time, then the row style.
(let colloop ((cols row) (colnum 0))
(unless (null? cols)
(let* ((datum (car cols))
(colstyle (gnc:html-table-col-style table colnum)))
;; push col and row styles
(when colstyle (gnc:html-document-push-style doc colstyle))
(when rowstyle (gnc:html-document-push-style doc rowstyle))
;; render the cell contents
(unless (gnc:html-table-cell? datum)
(push (gnc:html-document-markup-start doc "td" #t)))
(push (gnc:html-object-render datum doc))
(unless (gnc:html-table-cell? datum)
(push (gnc:html-document-markup-end doc "td")))
;; pop styles
(when rowstyle (gnc:html-document-pop-style doc))
(when colstyle (gnc:html-document-pop-style doc))
(colloop (cdr cols) (1+ colnum)))))
;; write the row end tag and pop the row style
(when rowstyle (gnc:html-document-push-style doc rowstyle))
(push (gnc:html-document-markup-end doc rowmarkup))
(when rowstyle (gnc:html-document-pop-style doc))
(gnc:pulse-progress-bar)
(rowloop (cdr rows) (1+ rownum)))))
(push (gnc:html-document-markup-end doc "tbody"))
;; write the table end tag and pop the table style
(push (gnc:html-document-markup-end doc "table"))
(gnc:html-document-pop-style doc)
retval))
(define (gnc:html-table-set-last-row-style! table tag . rest)
(apply gnc:html-table-set-row-style!
(cons* table (1- (gnc:html-table-num-rows table)) tag rest)))