About element naming Scott, I wrote an article on WebComponents.org: http://webcomponents.github.io/articles/how-should-i-name-my-element/
On Wednesday, March 19, 2014 8:21:27 PM UTC-3, Eric Bidelman wrote: > > Correct. > On Mar 19, 2014 6:13 PM, "Sergey Shevchenko" > <[email protected]<javascript:>> > wrote: > >> I think it can be just: >> >> <template if="{{ show }}"> >> >> -- the 'bind' part is unnecessary. True or false? >> >> On Friday, March 14, 2014 3:42:50 AM UTC-7, Barak Bar Orion wrote: >>> >>> You will have to use nested template, see example at: >>> https://github.com/Polymer/TemplateBinding/blob/master/ >>> examples/how_to/conditional_template.html >>> >>> >>> <template id="example" bind> >>> <span>Show?: <input type="checkbox" checked="{{ show }}"></span> >>> <template bind if="{{ show }}"> >>> <span>Yay! I'm shown</span> >>> </template> >>> >>> </template> >>> >>> Other from that you can use conditional attribute inside template: >>> hidden?="{{ hide }}" >>> see: >>> https://github.com/Polymer/TemplateBinding/blob/master/examples/how_to/conditional_attributes.html >>> >>> On Friday, March 14, 2014 12:17:41 PM UTC+2, >>> [email protected] wrote: >>>> >>>> Hi Scott, >>>> >>>> Thanks for the reply, another small question if I may, >>>> >>>> I can't find anywhere how to create an IF statement in the Polymer >>>> templating system, I would like to do something like: >>>> >>>> {{if line.disruptions}} >>>> <ul class"line-disruptions">....</ul> >>>> {{endif}} >>>> >>>> >>>> How is that done? >>>> >>>> Thanks! >>>> >>>> >>>> On Friday, 14 March 2014 05:47:16 UTC, Scott Miles wrote: >>>>> >>>>> Thanks for the follow up question. That model-from-event expression is >>>>> critical information that we (engineering) haven't communicated properly. >>>>> >>>>> >>>>> On Thu, Mar 13, 2014 at 10:38 PM, Michael Bleigh <[email protected]>wrote: >>>>> >>>>>> Good to know! Thanks. >>>>>> >>>>>> >>>>>> On Thu, Mar 13, 2014 at 10:17 PM, Scott Miles <[email protected]>wrote: >>>>>> >>>>>>> First off, I gave the example on the wrong element, I believe this >>>>>>> is more accurately what was asked for: >>>>>>> >>>>>>> <ul class="line-disruptions" on-tap="{{tapHandler}}"> >>>>>>> >>>>>>> >>>>>>> >> would it be possible to make tapHandler aware of the specific >>>>>>> disruption instance >>>>>>> >>>>>>> Yes. The handler can do: >>>>>>> >>>>>>> tapHandler: function(event) { >>>>>>> // get the specific `line` object associated with the target >>>>>>> element >>>>>>> var line = event.target.templateInstance.model; >>>>>>> >>>>>>> // do stuff with `line` >>>>>>> ... >>>>>>> >>>>>>> } >>>>>>> >>>>>>> >>>>>>> Scott >>>>>>> >>>>>>> P.S. This expression `event.target.templateInstance.model` is so >>>>>>> handy that we plan on sugaring it in the near future, maybe by >>>>>>> promoting >>>>>>> the `model` property to the `event` object, or possibly as another >>>>>>> argument >>>>>>> to the handler. >>>>>>> >>>>>>> >>>>>>> On Thu, Mar 13, 2014 at 9:32 PM, Michael Bleigh <[email protected]>wrote: >>>>>>> >>>>>>>> This isn't 100% related, but in the event of a declarative event in >>>>>>>> a repeat, is there any way to pass non-rendered data through to the >>>>>>>> event >>>>>>>> handler? For instance, in the example given, would it be possible to >>>>>>>> make >>>>>>>> tapHandler aware of the specific disruption instance short of passing >>>>>>>> some >>>>>>>> kind of index reference via data attributes etc. >>>>>>>> >>>>>>>> On Thursday, March 13, 2014 2:18:38 PM UTC-7, Scott Miles wrote: >>>>>>>> >>>>>>>>> The easiest way is to use Polymer's declarative event sugaring: >>>>>>>>> >>>>>>>>> <li class="line-disruption {{disruption.class}}" >>>>>>>>> *on-tap="{{tapHandler}}"*>{{disruption.from}} to {{disruption.to}}: >>>>>>>>> {{disruption.status}}</li> >>>>>>>>> >>>>>>>>> See here for documentation: http://www.polymer-project.org >>>>>>>>> /docs/polymer/polymer.html#declarative-event-mapping >>>>>>>>> >>>>>>>>> >> this.shadowRoot.querySelectorAll('ul.line-disruptions') >>>>>>>>> >>>>>>>>> This should work, as long as those elements exist at the time you >>>>>>>>> perform the query. IOW, only after the template has stamped actual >>>>>>>>> 'ul' >>>>>>>>> elements will you be able to query for them. >>>>>>>>> >>>>>>>>> >>>>>>>>> On Thu, Mar 13, 2014 at 4:14 AM, Martà Planellas < >>>>>>>>> [email protected]> wrote: >>>>>>>>> >>>>>>>>>> Hi all, I've been fighting this for a while, I have this html in >>>>>>>>>> my polymer element: >>>>>>>>>> >>>>>>>>>> <div class="container"> >>>>>>>>>> <ul class="lines"> >>>>>>>>>> <template id="line" repeat="{{line in lines}}"> >>>>>>>>>> <li class="line {{line.class}}"> >>>>>>>>>> <div class="line-label"> >>>>>>>>>> <span class="line-name >>>>>>>>>> {{line.nameclass}}"> >>>>>>>>>> {{line.name}} >>>>>>>>>> </span> >>>>>>>>>> <span class="line-status {{line.class}}"> >>>>>>>>>> {{line.status}} >>>>>>>>>> </span> >>>>>>>>>> </div> >>>>>>>>>> <ul class="line-disruptions"> >>>>>>>>>> <template id="disruption" >>>>>>>>>> repeat="{{disruption in line.disruptions}}"> >>>>>>>>>> <li class="line-disruption >>>>>>>>>> {{disruption.class}}">{{disruption.from}} to {{disruption.to}}: >>>>>>>>>> {{disruption.status}}</li> >>>>>>>>>> </template> >>>>>>>>>> </ul> >>>>>>>>>> </li> >>>>>>>>>> </template> >>>>>>>>>> </ul> >>>>>>>>>> </div> >>>>>>>>>> >>>>>>>>>> So there're two nested templates, now I want to add some click >>>>>>>>>> event on the *ul.line-disruptions* elements, but I have no idea >>>>>>>>>> how to get to these elements... >>>>>>>>>> >>>>>>>>>> I tried this.shadowRoot.querySelectorAll('ul.line-disruptions') >>>>>>>>>> but nothing is returned. >>>>>>>>>> >>>>>>>>>> How do I access those nodes? >>>>>>>>>> >>>>>>>>>> Thanks. >>>>>>>>>> >>>>>>>>>> Follow Polymer on Google+: plus.google.com/107187849809354688692 >>>>>>>>>> --- >>>>>>>>>> You received this message because you are subscribed to the >>>>>>>>>> Google Groups "Polymer" group. >>>>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>>>> send an email to [email protected]. >>>>>>>>>> >>>>>>>>>> To view this discussion on the web visit >>>>>>>>>> https://groups.google.com/d/msgid/polymer-dev/76621c93-187f- >>>>>>>>>> 4810-a3ef-026c080b4383%40googlegroups.com<https://groups.google.com/d/msgid/polymer-dev/76621c93-187f-4810-a3ef-026c080b4383%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>>>> . >>>>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>>>> >>>>>>>>> >>>>>>>>> Follow Polymer on Google+: plus.google.com/107187849809354688692 >>>>>>>> --- >>>>>>>> You received this message because you are subscribed to the Google >>>>>>>> Groups "Polymer" group. >>>>>>>> To unsubscribe from this group and stop receiving emails from it, >>>>>>>> send an email to [email protected]. >>>>>>>> To view this discussion on the web visit >>>>>>>> https://groups.google.com/d/msgid/polymer-dev/6edef541- >>>>>>>> f33d-44f7-b976-d2d1f1379806%40googlegroups.com<https://groups.google.com/d/msgid/polymer-dev/6edef541-f33d-44f7-b976-d2d1f1379806%40googlegroups.com?utm_medium=email&utm_source=footer> >>>>>>>> . >>>>>>>> >>>>>>>> For more options, visit https://groups.google.com/d/optout. >>>>>>>> >>>>>>> >>>>>>> >>>>>> >>>>> Follow Polymer on Google+: plus.google.com/107187849809354688692 >> --- >> You received this message because you are subscribed to the Google Groups >> "Polymer" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/polymer-dev/254b38dd-fbd5-416d-9fa8-975240d4d5a4%40googlegroups.com<https://groups.google.com/d/msgid/polymer-dev/254b38dd-fbd5-416d-9fa8-975240d4d5a4%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > Follow Polymer on Google+: plus.google.com/107187849809354688692 --- You received this message because you are subscribed to the Google Groups "Polymer" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/polymer-dev/8ecba2a5-ef71-4c0c-81a0-4c811e4b97c1%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
