seaside March 2002

seaside@lists.squeakfoundation.org

16 participants
32 discussions

problem restarting servers when VM comes up
by Jake Donham 26 Apr '02

26 Apr '02

Hi, Using Seaside 0.92 with Squeak 3.0 and Comanche 4.10 on a Redhat Linux 6.2 system, if you save and quit while a server is up, the VM crashes: Segmentation fault 1085305112 SystemDictionary>snapshot:andQuit:embedded: 1085305020 SystemDictionary>snapshot:andQuit: 1085304744 TheWorldMenu>saveAndQuit 1085304836 [] in TheWorldMenu>doMenuItem:with: 1085304652 BlockContext>on:do: 1085304008 TheWorldMenu>doMenuItem:with: 1085303640 [] in MenuItemMorph>invokeWithEvent: 1085303916 BlockContext>on:do: 1085304376 [] in BlockContext>valueUninterruptably 1085303824 BlockContext>on:do: 1085304192 [] in BlockContext>valueUninterruptably 1085303732 BlockContext>on:do: 1085303548 BlockContext>valueUninterruptably 1085303456 BlockContext>ensure: 1085303364 Cursor>showWhile: 1085303140 MenuItemMorph>invokeWithEvent: I tried Squeak 3.2 gamma, and while it doesn't crash on exit, when I restart it, the server is not running. However, as far as I can tell from poking around in ComancheServer, it is still registered in Comanche's list of active servers, so if you try to start it or set it to auto-start, Comanche complains that there's already a server on that port. This seems like a Comanche problem rather than a Seaside problem but I though I might find a friendly ear on this list. If there's somewhere else I should ask please let me know. Thanks, Jake

2 1

Re: [Seaside] Failing TestCases?
by Avi Bryant 05 Apr '02

05 Apr '02

On Tue, 5 Mar 2002, Cees de Groot wrote: > > fefr(a)gmx.net said: > > I only test the business-logic (using plain unit-tests). In one > > project I tried HttpUnit (http://httpunit.sourceforge.net/) to > > actually test the generated HTML, but it was too much work to get the > > test cases right. Some sort of higher level testing tool would be > > nice. > > Same here, with the difference that we never tried HttpUnit because I > concluded from a first glance that it wouldn't work ;-). And indeed, all our > regression bugs are in our .SSP files... > > What I've been thinking of is to mark things with special attribute tags > ("testid=foo") and do some sort of XPath queries with these to find that > certain table and check whether it has indeed 5 fields. Yes, that would be cool. Presumably in Seaside you could do something with the existing sea:id - it would be trivial to write a macro that inserted a testid based on this (we've been thinking about doing something similar for CSS support, incidentally, although I haven't thought much yet about where you'd want to insert an "id" by default, where a "class", etc). The other problem with tools like HttpUnit, though, is that they seem to assume you have meaningful (and thus predictable) URLs. Testing a Seaside application would require a testing framework that could extract the urls from the current page and use them to test the next one. Chalk up another point for statelessness, I'm afraid... In terms of higher level testing, I experimented with a simple system to let you interact directly with the page instances, avoiding all the HTML and HTTP stuff. Each request is simulated within a "self go: [...]" block, and the TestCase object makes sure that a "page" instVar is always set to the current page. So, an simple test for the calculator example might look like self go: [page numberPressed: 1]. self go: [page numberPressed: 0]. self assert: page current = '10'. self go: [page enter]. self assert: page stack first = 10. self go: [page current: '20'. page functionPressed: #+]. self assert: page stack first = 30. I didn't include this code in the release because, due to a strange interaction between #ensure: and #callCC:, I had to modify SUnit slightly to get it to work and I haven't tested it enough to be certain I didn't break anything. If anyone wants it, I can bring it up to date and post it. Avi

2 4

IALink for <link> element
by Kamil Kukura 02 Apr '02

02 Apr '02

Here is IALink for <link> element which is in fact same to IAImage but with 'href' atribute. Also IASession>>urlForResourceNamed: is fixed little bit. Here I collected useful tags which can refer to external source: <link href=""> <img src=""> <object classid="" codebase="" data=""> <applet codebase=""> <frame src=""> <iframe src=""> <base href=""> <script src="" I was thinking that for these elements there could be classes IAExternalSRC (for elements with src="" attribute), IAExternalHREF (for elements with href="" attribute) and then extra IAApplet and IAObject. Btw, regarding <object> tag I just discovered Netscape 6.2 can handle this: <object data="inc.html"> which allows to embed one html document into another. I like it. -- Kamil 'From Squeak3.0 of 4 February 2001 [latest update: #3552] on 30 March 2002 at 10:36:46 am'! IAElement subclass: #IALink instanceVariableNames: 'href ' classVariableNames: '' poolDictionaries: '' category: 'Seaside-Tags'! !IALink methodsFor: 'as yet unclassified' stamp: 'KamK 3/29/2002 17:13'! defaultBindings self set: #href toPath: id.! ! !IALink methodsFor: 'as yet unclassified' stamp: 'KamK 3/29/2002 17:14'! printHtmlTo: context | path | path _ context currentPage session urlForResourceNamed: (context valueForBinding: href). self printOpenTagTo: context withAssociations: {'href' -> path}.! ! "-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- "! IALink class instanceVariableNames: ''! !IALink class methodsFor: 'as yet unclassified' stamp: 'KamK 3/29/2002 17:12'! acceptNode: aNode ^ aNode name = #link! ! 'From Squeak3.0 of 4 February 2001 [latest update: #3552] on 30 March 2002 at 10:35:50 am'! !IASession methodsFor: 'request handling' stamp: 'KamK 3/30/2002 10:07'! urlForResourceNamed: aString | path | (aString indexOf: $:) > 0 "if naming scheme is provided" ifTrue: [^aString]. path _ self application documentRoot. path isEmptyOrNil ifTrue: [path _ '/']. path last = $/ ifFalse: [path _ path , '/']. path _ path , aString. ^path! !

3 7

How to work with sessions
by Alain Fischer 01 Apr '02

01 Apr '02

Hi Avi, I wanted to add session management to my application to be able to login logout have a session timeout after some defined time of unactivity. I wanted a user to logout form his session and to start a new session with higer privilege for example. The login is easy with IAAuthenticatedSession. The logout is more difficult to implement and seem to be browser dependant. I have tried to implement this in a subclass of IAAuthenticatedSession: authenticateUser: aUser password: aPassword userDisabled ifNotNil: [userDisabled ifTrue: [userDisabled := false. ^ false]]. ^ aUser = 'toto' and: [aPassword = 'toto'] userDisabled is set to true in a page action method, but this doesen't work. I haven't tried anything for timeout. I have seen the IATransaction, perhaps this could be used instead of session. What do you think ? Any hints ? Have a nice day Alain.

2 5

dangling close tags as text (was re: [BUG] in IAHtmlParser)
by Avi Bryant 29 Mar '02

29 Mar '02

Ok, this is now in SSVS - although the parse tree of invalid HTML like <span><table></table></span> will still be structurally different from your expectations, every byte of input text is preserved during output: !IAHtmlParser methodsFor: 'as yet unclassified' stamp: 'AB 3/29/2002 14:12'! closeTag: aTag | toClose | toClose _ nodeStack reversed detect: [:n | n name = aTag name asLowercase] ifNone: [^ self danglingCloseTag: aTag]. toClose hadCloseTag: true. nodeStack _ nodeStack copyUpTo: toClose.! ! !IAHtmlParser methodsFor: 'as yet unclassified' stamp: 'AB 3/29/2002 14:13'! danglingCloseTag: aTag self nextText: '</', aTag name, '>'! !

1 0

[BUG] in IAHtmlParser
by Alain Fischer 29 Mar '02

29 Mar '02

Hi Avi, I have tried to inspect or explore each of the following line: IAHtmlParser parse: '<span><table></table></span>' IAHtmlParser parse: '<table><tr></tr></table>' In the first case the explorer show me that the <span> tag and <table> tag are siblings, which is not expected. In the second case the explorer show that <table> is the parent tag and <tr> is the child tag, which is what is expected. Have a nice day. Alain

4 11

Re: [Seaside] [BUG] in IAHtmlParser
by Avi Bryant 29 Mar '02

29 Mar '02

(oops, forget to send this to the list) On Fri, 29 Mar 2002, Alain Fischer wrote: > I will take more care in using tags that i don't know in the future. I have to admit to being guilty of the same misuse of <span> myself before I actually read the spec. You can see this in, for example, IABatch>>html. However, since I often use the s-expression syntax instead of the html parser, I didn't get caught (btw, if anyone else is using the s-expr parser, I have a patch that adds paren blinking and auto-indent to the ParagraphEditor, which is extremely useful). Cheers, Avi

1 0

SSVS version of seaside on top of a filed-in version?
by Jake Donham 26 Mar '02

26 Mar '02

Hi, With an image into which I'd already filed seaside-0.92.cs, I loaded Seaside via SSVS. Would that cause problems? My server seems to run OK but I got some warnings about classes already existing during the update, which I proceeded through. (Still trying to find my way around Squeak--apologies if it's a dumb question, and if there's an FM I can R please let me know.) Jake

2 1

component replacement
by Kamil Kukura 26 Mar '02

26 Mar '02

This might be trivial but it gives me headache: In my application I have simple layout: table with one vertical strip with component called 'helper' and the rest with comp. 'body'. This helper is first set to LoginClass which handles login process and when it succeeds it does: self jumpToPage: MenuClass new. Then there's menu that in fact control the body component and provides logout action which in turn does self: jumpToPage: LoginClass new. Everything works great. Now I want to synchronize the body. That is when helper swaps then body needs go to home, like by code: self children at 'body' jumpToPage: MainClass new. What I'm thinking about now is do everything what IAComponent>>jumpToPage: does except that continuation. Is this safe? -- Kamil

2 5

Re: Ports to Other Smalltalks
by Avi Bryant 26 Mar '02

26 Mar '02

Jeff - I think this was intended for the list, so I'm cc'ing it. Hope you don't mind. On Mon, 25 Mar 2002, Jeffrey Odell wrote: > I noticed there was an ST/X port of Seaside in progress. I'm wondering > if anyone has attempted a port to other platforms. > > I'm interested in a Dolphin port, and interfacing to Swazoo. However, > I'd like to hear of any porting experiences people may have had. The ST/X port is on hold because ST/X cannot (yet, anyway) support continuations. My guess is porting to Dolphin will have similar problems - certainly when I looked briefly at it I didn't see any obvious way of implementing them (ie, the stack didn't seem to be reified in the way I'm used to from Squeak/VW/STX). But someone who knows Dolphin better may have better information. The only smalltalk other than Squeak that I know can support Seaside is VisualWorks - a port to VW would be great, and probably not very hard. Avi

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seaside March 2002