Confirm change delete with a dialog

Bug: Issue 4895
Change-Id: Ie0ef166811d8dfefc3bf60a8b48d8cb478d867dc

polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html

diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html
index 96c6193..30e9e86 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.html
@@ -112,6 +112,19 @@
           on-confirm="_handleAbandonDialogConfirm"
           on-cancel="_handleConfirmDialogCancel"
           hidden></gr-confirm-abandon-dialog>
+      <gr-confirm-dialog
+          id="confirmDeleteDialog"
+          class="confirmDialog"
+          confirm-label="Delete"
+          on-cancel="_handleConfirmDialogCancel"
+          on-confirm="_handleDeleteConfirm">
+        <div class="header">
+          Delete Change
+        </div>
+        <div class="main">
+          Do you really want to delete the change?
+        </div>
+      </gr-confirm-dialog>
     </gr-overlay>
     <gr-js-api-interface id="jsAPI"></gr-js-api-interface>
     <gr-rest-api-interface id="restAPI"></gr-rest-api-interface>

polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.js

diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.js b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.js
index 9fdc2a9..ef2a3b4 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.js
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions.js
@@ -336,6 +336,8 @@
       var type = el.getAttribute('data-action-type');
       if (type === ActionType.REVISION) {
         this._handleRevisionAction(key);
+      } else if (key === ChangeActions.DELETE) {
+        this._showActionDialog(this.$.confirmDeleteDialog);
       } else if (key === ChangeActions.REVERT) {
         this.showRevertDialog();
       } else if (key === ChangeActions.ABANDON) {
@@ -441,6 +443,10 @@
           {message: el.message});
     },
 
+    _handleDeleteConfirm: function() {
+      this._fireAction('/', this.actions[ChangeActions.DELETE], false);
+    },
+
     _setLoadingOnButtonWithKey: function(key) {
       var buttonEl = this.$$('[data-action-key="' + key + '"]');
       buttonEl.setAttribute('loading', true);

polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html

diff --git a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
index c180f46..00e61d9 100644
--- a/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
+++ b/polygerrit-ui/app/elements/change/gr-change-actions/gr-change-actions_test.html
@@ -434,5 +434,59 @@
         populateRevertMsgStub.restore();
       });
     });
+
+    suite('delete change', function() {
+      var fireActionStub;
+      var deleteAction;
+
+      var tapDeleteAction = function() {
+        var deleteButton = element.$$('gr-button[data-action-key=\'/\']');
+        MockInteractions.tap(deleteButton);
+        flushAsynchronousOperations();
+      };
+
+      setup(function() {
+        fireActionStub = sinon.stub(element, '_fireAction');
+        element.change = {
+          current_revision: 'abc1234',
+        };
+        deleteAction = {
+          method: 'DELETE',
+          label: 'Delete Change',
+          title: 'Delete change X_X',
+          enabled: true,
+        };
+        element.actions = {
+          '/': deleteAction,
+        };
+      });
+
+      teardown(function() {
+        fireActionStub.restore();
+      });
+
+      test('does not delete on action', function() {
+        tapDeleteAction();
+        assert.isFalse(fireActionStub.called);
+      });
+
+      test('shows confirm dialog', function() {
+        tapDeleteAction();
+        assert.isFalse(element.$$('#confirmDeleteDialog').hidden);
+        MockInteractions.tap(
+            element.$$('#confirmDeleteDialog').$$('gr-button[primary]'));
+        flushAsynchronousOperations();
+        assert.isTrue(fireActionStub.calledWith('/', deleteAction, false));
+      });
+
+      test('hides delete confirm on cancel', function() {
+        tapDeleteAction();
+        MockInteractions.tap(
+            element.$$('#confirmDeleteDialog').$$('gr-button:not([primary])'));
+        flushAsynchronousOperations();
+        assert.isTrue(element.$$('#confirmDeleteDialog').hidden);
+        assert.isFalse(fireActionStub.called);
+      });
+    });
   });
 </script>