app/components/proposal-list/component.js

@@ -1,20 +1,30 @@
 import Component from '@ember/component';
+import { inject } from '@ember/service';
+import { empty } from '@ember/object/computed';
 
 export default Component.extend({
+  kredits: inject(),
 
   tagName: 'ul',
   classNames: ['proposal-list'],
 
+  selectedProposals: [],
+  submitButtonDisabled: empty('selectedProposals'),
+
   actions: {
+    confirm() {
+      this.confirmProposals(this.selectedProposals)
+        .then(() => {
+          this.selectedProposals = [];
+        });
+    },
 
-    confirm(proposalId) {
-      if (this.contractInteractionEnabled) {
-        this.confirmProposal(proposalId);
+    toggleSelect(proposalId, selected) {
+      if (selected) {
+        this.selectedProposals.removeObject(proposalId);
       } else {
-        window.alert('Only members can vote on proposals. Please ask someone to set you up.');
+        this.selectedProposals.addObject(proposalId);
       }
-    }
-
+    },
   }
-
 });

app/components/proposal-list/item/component.js

@@ -0,0 +1,29 @@
+import Component from '@ember/component';
+import tag from 'ember-awesome-macros/tag';
+import { computed } from '@ember/object';
+import { reads } from '@ember/object/computed';
+import { inject } from '@ember/service';
+
+export default Component.extend({
+  kredits: inject(),
+
+  tagName: 'li',
+  classNames: ['proposal-list-item'],
+
+  attributeBindings: ['data-proposal-id', 'title'],
+
+  title: tag`(${'proposal.kind'}) ${'proposal.description'}`,
+  'data-proposal-id': reads('proposal.id'),
+
+  canBeVoted: computed('voterIds.[]', 'kredits.currentUser', function() {
+    let { isExecuted, voterIds } = this.proposal;
+    let { currentUser } = this.kredits;
+    voterIds = voterIds.map((id) => id.toString());
+
+    return currentUser.isCore && !isExecuted && !voterIds.includes(currentUser.id);
+  }),
+
+  selected: computed('selectedProposals.[]', function() {
+    return this.selectedProposals.includes(this.proposal.id);
+  })
+});

app/components/proposal-list/item/template.hbs

@@ -0,0 +1,8 @@
+<span class="category {{proposal.kind}}">♥</span>
+<span class="amount">{{proposal.amount}}</span><span class="symbol">₭S</span>
+for <span class="recipient">{{proposal.contributor.name}}</span>
+<span class="votes">({{proposal.votesCount}}/{{proposal.votesNeeded}} votes)</span>
+
+{{#if canBeVoted}}
+  <button {{action toggleSelect proposal.id selected}} class="{{if selected 'selected' ''}}">+1</button>
+{{/if}}

app/components/proposal-list/template.hbs

@@ -1,12 +1,15 @@
 {{#each proposals as |proposal|}}
-  <li data-proposal-id={{proposal.id}} title="({{proposal.kind}}) {{proposal.description}}">
-    <span class="category {{proposal.kind}}">♥</span>
-    <span class="amount">{{proposal.amount}}</span><span class="symbol">₭S</span>
-    for <span class="recipient">{{proposal.contributor.name}}</span>
-    <span class="votes">({{proposal.votesCount}}/{{proposal.votesNeeded}} votes)</span>
-
-    {{#unless proposal.isExecuted}}
-      <button {{action "confirm" proposal.id}}>+1</button>
-    {{/unless}}
-  </li>
+  {{proposal-list/item
+    proposal=proposal
+    selectedProposals=selectedProposals
+    toggleSelect=(action 'toggleSelect')
+  }}
 {{/each}}
+
+{{#if confirmProposals}}
+  <center>
+    <button disabled={{submitButtonDisabled}} {{action 'confirm'}}>
+      Submit selected
+    </button>
+  </center>
+{{/if}}

app/controllers/index.js

@@ -1,6 +1,7 @@
 import Controller from '@ember/controller';
 import { alias, filter, filterBy, sort } from '@ember/object/computed';
 import { inject as injectService } from '@ember/service';
+import RSVP from 'rsvp';
 
 export default Controller.extend({
   kredits: injectService(),
@@ -20,10 +21,17 @@ export default Controller.extend({
   proposalsOpenSorted: sort('proposalsOpen', 'proposalsSorting'),
 
   actions: {
-    confirmProposal(proposalId) {
-      this.kredits.vote(proposalId).then(transaction => {
-        window.confirm('Vote submitted to Ethereum blockhain: '+transaction.hash);
-      });
+    confirmProposals(proposalIds) {
+      if (this.kredits.currentUser.isCore) {
+        return this.kredits.batchVote(proposalIds)
+          .then((transaction) => {
+            window.confirm('Vote submitted to Ethereum blockhain: '+transaction.hash);
+            return transaction;
+          });
+      } else {
+        window.alert('Only members can vote on proposals. Please ask someone to set you up.');
+        return RSVP.reject();
+      }
     },
 
     save(contributor) {

app/services/kredits.js

@@ -4,7 +4,7 @@ import RSVP from 'rsvp';
 
 import Service from '@ember/service';
 import { computed } from '@ember/object';
-import { alias, notEmpty } from '@ember/object/computed';
+import { notEmpty } from '@ember/object/computed';
 import { isEmpty } from '@ember/utils';
 
 import config from 'kredits-web/config/environment';
@@ -16,8 +16,6 @@ export default Service.extend({
 
   currentUserAccounts: null, // default to not having an account. this is the wen web3 is loaded.
   currentUser: null,
-  currentUserIsContributor: notEmpty('currentUser'),
-  currentUserIsCore: alias('currentUser.isCore'),
   hasAccounts: notEmpty('currentUserAccounts'),
   accountNeedsUnlock: computed('currentUserAccounts', function() {
     return this.currentUserAccounts && isEmpty(this.currentUserAccounts);
@@ -68,7 +66,7 @@ export default Service.extend({
 
           if (this.currentUserAccounts && this.currentUserAccounts.length > 0) {
             this.getCurrentUser.then((contributorData) => {
-              this.set('currentUser', contributorData);
+              this.set('currentUser', Contributor.create(contributorData));
             });
           }
           return kredits;
@@ -130,10 +128,11 @@ export default Service.extend({
       });
   },
 
-  vote(proposalId) {
-    console.debug('[kredits] vote for', proposalId);
+  batchVote(proposalIds) {
+    proposalIds = proposalIds.map((id) => parseInt(id))
+    console.debug('[kredits] vote for', proposalIds);
 
-    return this.kredits.Operator.functions.vote(proposalId)
+    return this.kredits.Operator.functions.batchVote(proposalIds)
       .then((data) => {
         console.debug('[kredits] vote response', data);
         return data;

app/styles/components/_proposal-list.scss

@@ -46,7 +46,22 @@ ul.proposal-list {
       height: 2rem;
       line-height: 2rem;
       padding: 0 0.6rem;
+
+      &.selected {
+        background-color: rgba(224,104,251, 0.6);
+      }
     }
   }
 
+  button {
+    margin-top: 1.1rem;
+    height: 2rem;
+    line-height: 2rem;
+    padding: 0 0.6rem;
+
+    &:disabled {
+      cursor: not-allowed;
+      color: rgba(204,204,204, 0.6);
+    }
+  }
 }

app/templates/index.hbs

@@ -2,7 +2,7 @@
   <section id="user-account">
     {{#if kredits.currentUser }}
       {{ kredits.currentUser.name }}
-      {{#if kredits.currentUserIsCore }}
+      {{#if kredits.currentUser.isCore }}
         (core)
       {{/if}}
       Account: {{kredits.currentUser.account}}
@@ -32,8 +32,7 @@
     <div class="content">
       {{!-- TODO: We need a better naming for kredits.hasAccounts --}}
       {{proposal-list proposals=proposalsOpenSorted
-                      confirmProposal=(action "confirmProposal")
-                      contractInteractionEnabled=kredits.hasAccounts}}
+                      confirmProposals=(action 'confirmProposals')}}
 
       {{!-- TODO: We need a better naming --}}
       {{#if kredits.hasAccounts}}
@@ -50,8 +49,7 @@
     <h2>Closed Proposals</h2>
   </header>
   <div class="content">
-    {{proposal-list proposals=proposalsClosedSorted
-                    confirmProposal=(action "confirmProposal")}}
+    {{proposal-list proposals=proposalsClosedSorted}}
 
     {{!-- TODO: We need a better naming --}}
     {{#if kredits.hasAccounts}}