Hi Felix, Thank you very much for the tips. I have a couple of questions if I may:
Just a remark: I would not use a space character to distinguish states in > the reveal widget, better use type="nomatch" for the opposite. > That construct acts as a switch statement which could have been avoided if I could pass regexp to <$reveal> in order to signal an empty string (null or filled with spaces, tabs ...). In fact this here is a quick dirty workaround and it fails if the user types in two spaces or more. I don't know how I can cover the possible cases as “nomatch”. ...maybe better to use the list element for if-else analogy in this case > (yes, even though it is called list widget it can be used for if else > operations). > I'm trying to manipulated the contents of a single field of a specific Tiddler. My understanding is that the list element pipes Tiddler names into its enclosure. Would you please give a rough code snippet for this? Also a reveal widget creates a dom element,... Would you happen to know how I can find the exact objects created in order to access them in JS code. And finally; I tried to accomplish this by a JavaScript macro but it didn't work because the macro kept firing the prompt popup without being called. So I found this: "http://tiddlywiki.com/dev/#JavaScript%20Macros";. Macros are just used to return a chunk of wikitext for further processing. > They should not make modifications to tiddlers in the wiki store. The > reason is that you cannott control when the macro is called; it may be > called repeatedly as part of refresh processing. So it is important that > macros do not have any other side effects beyond generating their text. Thank you; and best wishes, Mehdi On Thursday, June 18, 2015 at 11:41:04 AM UTC+2, Felix Küppers wrote: > > Hi Mehdi, > > while I would probably use javascript at this point, I did not even know > this is possible with widgets :) > > Just a remark: I would not use a space character to distinguish states in > the reveal widget, better use type="nomatch" for the opposite. Also a > reveal widget creates a dom element, maybe better to use the list element > for if-else analogy in this case (yes, even though it is called list widget > it can be used for if else operations). > > -Felix > > On 18.06.2015 06:04, hobbyist writer wrote: > > Hi everyone. > > I would like to share with you some code. It consists of three > interrelated Tiddlers that: > > 1. Store and display Geo-position. > 2. Prompt the user for changes, if she/he decides to. > 3. Fill some default value upon a change request, if the value is > empty. > > Now this is simple to accomplish especially using JavaScript, BUT... > > I happened to notice that the <$reveal> > <http://tiddlywiki.com/#RevealWidget> widget can be used to conditionally > trigger ActionWidgets <http://tiddlywiki.com/#ActionWidgets>. Here are > the contents of the Tiddlers. Note that we only need to > > - transclude *{{:/_template/geo-button}}* in any Tiddler as interface, > and > - reference the Geo-position by *{{**$:/_template/geo!!_position}}* > > tags: > title: $:/_template/geo-button > > > <$set name="thepos" value="51.5007, -0.1246"> > <$button> > <$action-sendmessage $message="tm-modal" $param="$:/_template/geo-prompt" > /> > <$reveal type="match" state="$:/_template/geo!!_position" text=""> > <$action-setfield $tiddler="$:/_template/geo" $field="_position" $value=<< > thepos>>/> > </$reveal> > <$reveal type="match" state="$:/_template/geo!!_position" text=" "> > <$action-setfield $tiddler="$:/_template/geo" $field="_position" $value=<< > thepos>>/> > </$reveal> > {{$:/_template/geo}} > </$button> > </$set> > > tags: > title: $:/_template/geo-prompt > > > ! {{$:/_template/geo!!_caption}} > > <$edit-text tiddler="$:/_template/geo" field="_position" > placeholder="51.5007, > -0.1246" class="tc-edit-texteditor" focus="true"/> > > tags: > title: $:/_template/geo > > > <font size=3>''{{!!_caption}}'' <font color= > #BD1745>{{!!_position}}</font></font> > > > I look forward to learning from your feedback. I apologize if this is > trivial or a mere repetition, but to me it was new and non-trivial. > > > Best, > Mehdi > > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/562eae38-3618-422a-9746-9109d0d4a84d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
