> I'm writing a component that displays a collectionof
> pictures. The idea is to have a miniature acting as a link to
> a larger version of the image, and to have a download link
> below the miniature.
>
> I tried to use the #popupAnchor, but I don't understand how
> to use it.
> My idea was to write something like this:
>
> MyComponent>>renderContentOn: html
> ....
> html popupAnchor
> callback: [:r | self renderBigPictureOn: r];
> with: [html renderMiniature: item on: html].
> ....
>
> MyComponent>>renderBigPictureOn: html
> html image src: 'thesource' .... .
> html anchor
> callback: [self session closePopupWithoutReloadingOpener];
> with: 'close link'.
>
>
> But it doesn't work (I get errors when #with: get called in
> #renderContentOn:).
>
>
> Does someone have a sample usage of popupAnchor ? Many thanks!
Two things.
1) You have rendering code in the callback, this does not make
any sense in Seaside and is very common mistake.
2) You need to supply a name for the popup window to avoid the walkback.
I would try this.
MyComponent>>initialize
bigPictureRequested := false.
MyComponent>>renderContentOn: html
bigPictureRequested ifTrue:
[bigPictureRequested := false.
^self renderBigPictureOn: html].
.....
html popupAnchor
callback: [bigPictureRequested := true];
name: 'big_pic';
extent: 400@400; "Size of the picture"
with: [html renderMiniature: item on: html].
....
MyComponent>>renderBigPictureOn: html
html image src: 'thesource' .... .
html anchor
callback: [self session closePopupWithoutReloadingOpener];
with: 'close link'.
HTH
Michel.
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