dart-polymer

问题 I'm developing my first "complex" application on Dart and I'm finding some trouble on how to work with more than one view (I want to develop the application to run within a single page). First of all, I'm assuming that this (using Polymer) is the right approach to work with various views (or "app screens") of the application. However, if it's not, I would like to know (of course). And by "app screens", I'm saying something like creating various forms in Java. So, for instance, I have two

问题 A load of errors, and my app won't load. True on desktop (OSX El Capitan) and mobile (iOS9). http://d.pr/i/1lvBa Errors like: TypeError: Attempting to change configurable attribute of unconfigurable property. ReferenceError: Can't find variable: HTMLImports (anonymous function) atEndOfMicrotask TypeError: document.registerElement is not a function. (In 'document.registerElement('polymer-element', {prototype: prototype})', 'document.registerElement' is undefined) And more... My Polymer (Dart)

问题 I'm trying to build a reusable polymer web component that supports reordering items via drag and drop in a core-list. The interface I want is essentially the same as core-list <reorderable-list id="list" data="{{data}}" height="60"> <template> <some-reorderable-element> </some-reorderable-element> </template> </reorderable-list> My current thinking is that I want each row to be wrapped as follows <a-container> <draggable-member> <some-reorderable-element> </some-reorderable-element> <

问题 I want to build Polymer element that generates a list output <polymer-element name="polymer-list> <template> <template id="my-repeat" repeat="{{item in listData}}"> <!-- use content here --> <!-- some fix dummy content to see how this is handled --> <div id="div_{{item['item']['index']}}">{{item['item']['index']}}</div> </template> <content id="content" select="*"></content> </template> <script type="application/dart" src="polymer_list.dart"></script> </polymer-element> and I want to move the

问题 Due to the lack of multi-dimensional array support in dart, I thought of using List. Dart code : class MyModel extends Object with Observable { @observable List<List<int>> dataList = toObservable(new List<List<int>>()); } void main() { initPolymer().run(() { Polymer.onReady.then((_) { var template = querySelector("#bindValueTemplate") as AutoBindingElement; var model = template.model = new MyModel(); for (int i=0; i<2;i++) { List<int> in1 = new List<int>(); for (int j=0; j<2; j++) { in1.add(j

问题 I am not able to figure out how :host(:hover) works on child custom elements of a parent custom element. Can someone explain how to make this work? todoitem.html <!-- import polymer-element's definition --> <link rel="import" href="packages/polymer/polymer.html"> <polymer-element name="my-li" extends="li"> <style> :host(:hover){ color: red; } </style> <template> <content></content> </template> <script type="application/dart" src="todoitem.dart"></script> </polymer-element> todoitem.dart

问题 The application I am developing consists of several major sections. To this end, I have a global toolbar for the entire application and a toolbar that is specific to the particular section of the application. Here is a gist that demonstrates what the view for an individual application might look like: https://gist.github.com/mattjonesorg/33b2bbcb0b0c81feb5ca (Paste the gist into the polymer designer for a quick view) I have the main application's toolbar as a core-scroll-header-panel. The

问题 I have two polymer elements (paper-input) referencing the same object on different instance variable. When I change the text on one paper-input element, another paper-element does not change, although the referenced object has changed. Following details: >>> Browser >>> main_app.html <dom-module id="main-app"> <template> <h3>Lista de Produtos</h3> <paper-fab icon="add" on-tap="adicionarProduto"></paper-fab> <template is="dom-repeat" items="{{produtos}}" as="item"> <div class="layout vertical"

问题 This question has been asked before but since the answer to that question Dart has adopted polymer to replace Web UI. Is there a Polymer version of the answer to this question? Also, I saw the answer relating to routes, which I like, but investigating it further has led me to believe that routes and polymer do not play well together yet. I would also like to solicit views on the new Angular-Dart since I am comfortable with Angular but see it as a competing technology to polymer at least in

问题 I am seeing this error in my console: Exception: InvalidStateError: Internal Dartium Exception PolymerDeclaration.registerType (package:polymer/src/declaration.dart:241:22) PolymerDeclaration.register (package:polymer/src/declaration.dart:175:17) PolymerDeclaration._register (package:polymer/src/declaration.dart:114:13) PolymerDeclaration.registerWhenReady (package:polymer/src/declaration.dart:109:14) _notifyType (package:polymer/src/declaration.dart:514:49) Polymer.register (package:polymer