Remove image button bug (thanks to Eric Knauel for reporting this): Image
buttons return the coordinates where the user clicked la imgbtn321.x=13&imgbtn321.y=12. Thus, we cannot search for the input-field-name of the image button. To remove this bug, we introduce following changes: surflet-input-fields.scm: + make-image-button returns a multi-input-field that searches for its coordinates in the bindings, returning a pair (x y) of it (numbers). + Adapt select-input-fields to interface changes of multi-input-fields: transformers get also their input-fields. returned-via.scm: Don't simply check for the input field name in the binding. Use input-field-value to check for existance of the input field in the bindings input-fields.scm: multi-input-fields get also their input-field as argument web-server/root/surflets/byte-input.scm: Adapt to interface change of multi-input-fields: transformers get also their input-field web-server/root/surflets/test.scm: Check the image-button feature correctly.
This commit is contained in:
interp
parent
69ea6ae13f
commit
6c99e3a707
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@ -135,7 +135,7 @@
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(let ((real-input-field (cadr input-field)))
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(cond
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((real-input-field-multi? real-input-field)
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((real-input-field-transformer real-input-field) bindings))
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((real-input-field-transformer real-input-field) input-field bindings))
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((real-input-field-binding real-input-field bindings) =>
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(lambda (binding)
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((real-input-field-transformer real-input-field) (cdr binding))))
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@ -162,6 +162,9 @@
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(define (real-input-field-binding input-field bindings)
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(assoc (real-input-field-name input-field) bindings))
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;; Returns the binding of the input-field in bindings by the
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;; input-field's name. If your input-field will have another name in
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;; the bindings than it was created with, use a multi-input-field.
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(define (input-field-binding input-field bindings)
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(real-input-field-binding (cadr input-field) bindings))
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@ -1,7 +1,7 @@
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(define (returned-via return-object bindings)
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(if (input-field? return-object)
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(input-field-binding return-object bindings)
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(input-field-value return-object bindings)
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;; We assume we have a return-address-object instead.
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(let ((address (return-object 'address)))
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(cond
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@ -149,8 +149,12 @@
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;;; A selection input field shows a list of options that can be
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;;; selected. For this purpose, we introduce an sel-if-option record,
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;;; that contains all the information for each option. This is
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;;; justified by the fact, that the options list is in HTML seperated,
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;;; too.
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;;; justified by the fact, that the options list is seperated in HTML,
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;;; too. The TAG is the string that is displayed in the website, the
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;;; VALUE is the value that is returned by input-field-value, if this
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;;; option was selected. TAG is assumed to be unique by some functions
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;;; (e.g. select and unselect) SELECTED? tells us, if this option is
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;;; preselected.
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(define-record-type sel-if-option :sel-if-option
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(really-make-sel-if-option tag value selected? attributes)
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sel-if-option?
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@ -177,7 +181,7 @@
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(optionals maybe-attributes
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((selected? boolean?)
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(attributes sxml-attribute?))
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(make-sel-if-option tag 'ignored selected? attributes)))
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(make-sel-if-option tag tag selected? attributes)))
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(define-record-discloser :sel-if-option
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(lambda (sel-if-option)
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@ -196,6 +200,36 @@
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(define (unselect-sel-if-option! tag sel-if)
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(set-select-input-field-option-selected?! tag sel-if #f))
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(define (set-select-input-field-option-selected?! tag sel-if selected?)
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(let ((options (input-field-attributes-default
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(input-field-attributes sel-if))))
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(if (number? tag) ; is tag an index?
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(set-sel-if-option-selected?! (list-ref options tag)
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selected?)
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(let lp ((options options))
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(if (null? options)
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(error "No such option" tag sel-if)
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(if (tag=sel-if-option? tag (car options))
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(set-sel-if-option-selected?! (car options) selected?)
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(lp (cdr options))))))
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(touch-input-field! sel-if)))
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;; Find sel-if-option in a list by its tag.
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(define (tag=sel-if-option? tag sel-if-option)
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(string=? tag (sel-if-option-tag sel-if-option)))
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(define (find-sel-if-option tag sel-if-options)
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(cond ((member/srfi-1 tag sel-if-options tag=sel-if-option?)
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=> car)
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;; MEMBER/SRFI-1 returns the sublist that starts with the
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;; searched element.
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(else #f)))
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(define (find-sel-if-option-value tag sel-if-options)
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(cond ((find-sel-if-option tag sel-if-options)
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=> sel-if-option-value)
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(else #f)))
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(define (add-sel-if-option! sel-if sel-if-option)
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(let ((attributes (input-field-attributes sel-if)))
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(set-input-field-attributes-default!
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@ -216,34 +250,6 @@
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attributes
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(delete tag sel-if-options tag=sel-if-option?))))
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(touch-input-field! sel-if)))
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(define (set-select-input-field-option-selected?! tag sel-if selected?)
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(let ((options (input-field-attributes-default
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(input-field-attributes sel-if))))
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(if (number? tag)
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(set-sel-if-option-selected?! (list-ref options tag)
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selected?)
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(let lp ((options options))
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(if (null? options)
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(error "No such option" tag sel-if)
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(if (tag=sel-if-option? tag (car options))
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(set-sel-if-option-selected?! (car options) selected?)
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(lp (cdr options))))))
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(touch-input-field! sel-if)))
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;; Find sel-if-option in a list by its tag.
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(define (tag=sel-if-option? tag sel-if-option)
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(string=? tag (sel-if-option-tag sel-if-option)))
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(define (find-sel-if-option tag sel-if-options)
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(cond ((member/srfi-1 tag sel-if-options tag=sel-if-option?)
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=> car)
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(else #f)))
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(define (find-sel-if-option-value tag sel-if-options)
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(cond ((find-sel-if-option tag sel-if-options)
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=> sel-if-option-value)
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(else #f)))
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;; To be compatible with previous versions of MAKE-SELECT-INPUT-FIELD,
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;; we accept also a simple list as an option-list. New programs should
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@ -257,14 +263,13 @@
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(define (make-select-input-field sel-if-options . maybe-further-attributes)
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(really-make-select-input-field (tolerate-old-sel-if-options sel-if-options)
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#f
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maybe-further-attributes))
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(define (make-annotated-select-input-field sel-if-options .
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maybe-further-attributes)
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(really-make-select-input-field sel-if-options #t maybe-further-attributes))
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(really-make-select-input-field sel-if-options maybe-further-attributes))
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(define (really-make-select-input-field sel-if-options annotated?
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(define (really-make-select-input-field sel-if-options
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maybe-further-attributes)
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(let ((real-sel-if-options (tolerate-old-sel-if-options sel-if-options)))
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(optionals maybe-further-attributes
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@ -272,17 +277,14 @@
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(attributes sxml-attribute?))
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(let ((name (generate-input-field-name "select")))
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(if multiple?
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(make-multiple-select-input-field name sel-if-options
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annotated? attributes)
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(make-multiple-select-input-field name sel-if-options attributes)
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(make-single-select-input-field name sel-if-options
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annotated? attributes))))))
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attributes))))))
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;; internal
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(define (make-multiple-select-input-field name sel-if-options
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annotated? attributes)
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(define (make-multiple-select-input-field name sel-if-options attributes)
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(make-multi-input-field name "mult-select"
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(make-sel-if-multiple-transformer name sel-if-options
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annotated?)
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sel-if-multiple-transformer
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(make-input-field-attributes
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sel-if-options
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(list '(multiple)
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@ -290,33 +292,27 @@
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make-sel-if-html-tree))
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;; internal
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(define (make-single-select-input-field name sel-if-options
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annotated? attributes)
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(define (make-single-select-input-field name sel-if-options attributes)
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(make-input-field name "select"
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(if annotated?
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(lambda (tag)
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(cond ((find-sel-if-option-value tag sel-if-options)
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=> identity)
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(else (error "no such option." tag))))
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identity)
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(lambda (tag)
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(cond ((find-sel-if-option-value tag sel-if-options)
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=> identity)
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(else (error "no such option." tag))))
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(make-input-field-attributes
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sel-if-options
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(sxml-attribute-attributes attributes))
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make-sel-if-html-tree))
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(define (make-sel-if-multiple-transformer name sel-if-options annotated?)
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(lambda (bindings)
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(let ((tags (map cdr
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(filter (lambda (binding)
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(define (sel-if-multiple-transformer input-field bindings)
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(let ((name (input-field-name input-field))
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(sel-if-options (input-field-attributes-default
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(input-field-attributes input-field))))
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(let* ((my-bindings (filter (lambda (binding)
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(equal? (car binding) name))
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bindings))))
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(filter-map (if annotated?
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(lambda (tag)
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(find-sel-if-option-value tag sel-if-options))
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(lambda (tag)
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(if (find-sel-if-option tag sel-if-options)
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tag
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#f)))
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bindings))
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(tags (map cdr my-bindings)))
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(filter-map (lambda (tag)
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(find-sel-if-option-value tag sel-if-options))
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tags))))
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(define (make-sel-if-html-tree sel-if)
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@ -496,6 +492,30 @@
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#f `(@ (src ,image-source)
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,@(sxml-attribute-attributes attributes)))))
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(define (make-image-button image-source . maybe-further-attributes)
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(optionals maybe-further-attributes
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((attributes sxml-attribute?))
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(make-multi-input-field (generate-input-field-name "imgbtn")
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"image"
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image-button-transformer
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(make-input-field-attributes
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`(src ,image-source)
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(sxml-attribute-attributes attributes))
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make-button-html-tree)))
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(define (image-button-transformer image-button bindings)
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(let ((x (find-image-button-coordinate image-button bindings ".x"))
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(y (find-image-button-coordinate image-button bindings ".y")))
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(and x y (cons (string->number x)
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(string->number y)))))
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(define (find-image-button-coordinate image-button bindings suffix)
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(let* ((name (input-field-name image-button)))
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(cond
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((assoc (string-append name suffix) bindings)
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=> (lambda (pair)
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(cdr pair)))
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(else #f))))
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;;EOF
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@ -22,7 +22,7 @@
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(* 2 order))))))))
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(make-multi-input-field
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#f "byte-input"
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(lambda (bindings)
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(lambda (input-field bindings)
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(let loop ((sum 0)
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(checkboxes checkboxes))
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(if (null? checkboxes)
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@ -32,6 +32,10 @@ test"))
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(define radios (map radio radio-elements))
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(define checkbox (make-annotated-checkbox-input-field "hooray!"))
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(define submit (make-submit-button))
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(define image (make-image-button "/img/221.gif"))
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(define reset (make-reset-button))
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(define (translate-line-breaks text)
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(let lp ((result '())
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(text text))
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@ -65,7 +69,7 @@ test"))
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(p "called " ,global " times")
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(p "Choose an annotated address:" (br)
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(ul
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(li (url ,(addr new-url "Eva Gottwald") "ab=ba"))
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(li (url ,(addr new-url "Zoe") "ab=ba"))
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(li (url ,(addr new-url "be<ta") "be<ta"))
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(li (url ,(addr new-url) "<nothing>"))))
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(p "Or choose an annotated callback" (br)
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@ -93,8 +97,7 @@ test"))
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'(nbsp) '(nbsp)))
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radio-elements))))
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(tr (td "Checkbox:") (td ,checkbox)))
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,(make-submit-button) ,(make-reset-button) (br)
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,(make-image-button "/img/221.gif")))
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,submit ,reset (br) ,image))
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(hr)
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(p (url "/" "Return to main menu.")))))))
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(bindings (get-bindings req))
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@ -107,6 +110,9 @@ test"))
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(textarea-text (input-field-value textarea bindings))
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(radio-result (input-field-value (radio #f) bindings))
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(checkbox-result (input-field-value checkbox bindings))
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(submit-result (returned-via? submit bindings))
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(reset-result (returned-via? reset bindings))
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(image-result (returned-via image bindings))
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(result
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(cond
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((returned-via? addr bindings) =>
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@ -114,7 +120,9 @@ test"))
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(format #f "returned via annotated string ~s" string)))
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(else
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(set-text-input-field-value! text text-entered)
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(format #t "passed1 ")
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(only-select-selected! select selected (cdr selections))
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(format #t "passed2 ")
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(only-select-selected! select2 (list selected2) (car selections))
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(if number-entered
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(set-number-input-field-value! number number-entered))
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@ -133,7 +141,10 @@ test"))
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(if checkbox-result
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(check-checkbox-input-field! checkbox)
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(uncheck-checkbox-input-field! checkbox))
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`(p "Returned via submit" (br)
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`(p ,(cond
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(image-result (format #f "Returned via image ~s" image-result))
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(submit-result "Returned via submit")
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(else "Don't know how you did return.")) (br)
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"Bindings were: " ,(format #f "~s" bindings) (br)
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(table
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(@ (valign "top"))
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@ -151,7 +162,6 @@ test"))
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(tr (td "Radio:") (td ,(format #f "~s" radio-result)))
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(tr (td "Checkbox:") (td ,(format #f "~s" checkbox-result)))))
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))))
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(set! global (+ 1 global))
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(send-html/suspend
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(lambda (continue)
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@ -175,9 +185,11 @@ test"))
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(url "/" "Return to main menu.")))))))
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(define (only-select-selected! sel-if selected indices)
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(format #t "called only-select-selected! with ~s ~s ~s~%" sel-if selected indices)
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(for-each (lambda (index)
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(unselect-sel-if-option! index sel-if))
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(iota (length (cdr selections))))
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(format #t "passeed 3 ")
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(for-each (lambda (selected)
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(select-sel-if-option!
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(list-index (lambda (s) (string=? s selected))
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