Import board: added UI

client/components/import/import.jade

@@ -0,0 +1,8 @@
+template(name="importPopup")
+  if error.get
+    .warning {{_ error.get}}
+  form
+    label
+      | {{_ getLabel}}
+      textarea.js-card-json(placeholder="{{_ 'import-json-placeholder'}}" autofocus)
+    input.primary.wide(type="submit" value="{{_ 'import'}}")

client/components/import/import.js

@@ -0,0 +1,80 @@
+/**
+ * Abstract root for all import popup screens.
+ * Descendants must define:
+ * - getMethodName(): return the Meteor method to call for import, passing json data decoded as object
+ * and additional data (see below)
+ * - getAdditionalData(): return object containing additional data passed to Meteor method
+ * (like list ID and position for a card import)
+ * - getLabel(): i18n key for the text displayed in the popup, usually to explain how to get the data out of the
+ * source system.
+ */
+const ImportPopup = BlazeComponent.extendComponent({
+  template() {return 'importPopup';},
+  events() {
+    return [{
+      'submit': (evt) => {
+        evt.preventDefault();
+        const dataJson = $(evt.currentTarget).find('textarea').val();
+        let dataObject;
+        try {
+          dataObject = JSON.parse(dataJson);
+        } catch (e) {
+          this.setError('error-json-malformed');
+          return;
+        }
+        Meteor.call(this.getMethodName(), dataObject, this.getAdditionalData(),
+          (error, response) => {
+            if (error) {
+              this.setError(error.error);
+            } else {
+              Filter.addException(response);
+              Popup.close();
+            }
+          }
+        );
+      },
+    }];
+  },
+
+  onCreated() {
+    this.error = new ReactiveVar('');
+  },
+
+  setError(error) {
+    this.error.set(error);
+  },
+});
+
+ImportPopup.extendComponent({
+  getAdditionalData() {
+    const listId = this.data()._id;
+    const firstCardDom = $(`#js-list-${this.currentData()._id} .js-minicard:first`).get(0);
+    const sortIndex = Utils.calculateIndex(null, firstCardDom).base;
+    const result = {listId, sortIndex};
+    return result;
+  },
+
+  getMethodName() {
+    return 'importTrelloCard';
+  },
+
+  getLabel() {
+    return 'import-card-trello-instruction';
+  },
+}).register('listImportCardPopup');
+
+ImportPopup.extendComponent({
+  getAdditionalData() {
+    const result = {};
+    return result;
+  },
+
+  getMethodName() {
+    return 'importTrelloBoard';
+  },
+
+  getLabel() {
+    return 'import-board-trello-instruction';
+  },
+}).register('boardImportBoardPopup');
+