<!DOCTYPE html>
<!--
@license
Copyright (C) 2016 The Android Open Source Project

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<meta charset="utf-8">
<title>gr-button</title>

<script src="/node_modules/@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js"></script>

<script src="/node_modules/@webcomponents/webcomponentsjs/webcomponents-lite.js"></script>
<script src="/components/wct-browser-legacy/browser.js"></script>

<test-fixture id="basic">
  <template>
    <gr-button></gr-button>
  </template>
</test-fixture>

<test-fixture id="nested">
  <template>
    <div id="test">
      <gr-button class="testBtn"></gr-button>
    </div>
  </template>
</test-fixture>

<test-fixture id="tabindex">
  <template>
    <gr-button tabindex="3"></gr-button>
  </template>
</test-fixture>

<script type="module">
import '../../../test/common-test-setup.js';
import './gr-button.js';
import {addListener} from '@polymer/polymer/lib/utils/gestures.js';
import {appContext} from '../../../services/app-context.js';

suite('gr-button tests', () => {
  let element;
  let sandbox;

  const addSpyOn = function(eventName) {
    const spy = sandbox.spy();
    if (eventName == 'tap') {
      addListener(element, eventName, spy);
    } else {
      element.addEventListener(eventName, spy);
    }
    return spy;
  };

  setup(() => {
    element = fixture('basic');
    sandbox = sinon.sandbox.create();
  });

  teardown(() => {
    sandbox.restore();
  });

  test('disabled is set by disabled', () => {
    const paperBtn = element.shadowRoot.querySelector('paper-button');
    assert.isFalse(paperBtn.disabled);
    element.disabled = true;
    assert.isTrue(paperBtn.disabled);
    element.disabled = false;
    assert.isFalse(paperBtn.disabled);
  });

  test('loading set from listener', done => {
    let resolve;
    element.addEventListener('click', e => {
      e.target.loading = true;
      resolve = () => e.target.loading = false;
    });
    const paperBtn = element.shadowRoot.querySelector('paper-button');
    assert.isFalse(paperBtn.disabled);
    MockInteractions.tap(element);
    assert.isTrue(paperBtn.disabled);
    assert.isTrue(element.hasAttribute('loading'));
    resolve();
    flush(() => {
      assert.isFalse(paperBtn.disabled);
      assert.isFalse(element.hasAttribute('loading'));
      done();
    });
  });

  test('tabindex should be -1 if disabled', () => {
    element.disabled = true;
    assert.isTrue(element.getAttribute('tabindex') === '-1');
  });

  // Regression tests for Issue: 11969
  test('tabindex should be reset to 0 if enabled', () => {
    element.disabled = false;
    assert.equal(element.getAttribute('tabindex'), '0');
    element.disabled = true;
    assert.equal(element.getAttribute('tabindex'), '-1');
    element.disabled = false;
    assert.equal(element.getAttribute('tabindex'), '0');
  });

  test('tabindex should be preserved', () => {
    element = fixture('tabindex');
    element.disabled = false;
    assert.equal(element.getAttribute('tabindex'), '3');
    element.disabled = true;
    assert.equal(element.getAttribute('tabindex'), '-1');
    element.disabled = false;
    assert.equal(element.getAttribute('tabindex'), '3');
  });

  // 'tap' event is tested so we don't loose backward compatibility with older
  // plugins who didn't move to on-click which is faster and well supported.
  test('dispatches click event', () => {
    const spy = addSpyOn('click');
    MockInteractions.click(element);
    assert.isTrue(spy.calledOnce);
  });

  test('dispatches tap event', () => {
    const spy = addSpyOn('tap');
    MockInteractions.tap(element);
    assert.isTrue(spy.calledOnce);
  });

  test('dispatches click from tap event', () => {
    const spy = addSpyOn('click');
    MockInteractions.tap(element);
    assert.isTrue(spy.calledOnce);
  });

  // Keycodes: 32 for Space, 13 for Enter.
  for (const key of [32, 13]) {
    test('dispatches click event on keycode ' + key, () => {
      const tapSpy = sandbox.spy();
      element.addEventListener('click', tapSpy);
      MockInteractions.pressAndReleaseKeyOn(element, key);
      assert.isTrue(tapSpy.calledOnce);
    });

    test('dispatches no click event with modifier on keycode ' + key, () => {
      const tapSpy = sandbox.spy();
      element.addEventListener('click', tapSpy);
      MockInteractions.pressAndReleaseKeyOn(element, key, 'shift');
      MockInteractions.pressAndReleaseKeyOn(element, key, 'ctrl');
      MockInteractions.pressAndReleaseKeyOn(element, key, 'meta');
      MockInteractions.pressAndReleaseKeyOn(element, key, 'alt');
      assert.isFalse(tapSpy.calledOnce);
    });
  }

  suite('disabled', () => {
    setup(() => {
      element.disabled = true;
    });

    for (const eventName of ['tap', 'click']) {
      test('stops ' + eventName + ' event', () => {
        const spy = addSpyOn(eventName);
        MockInteractions.tap(element);
        assert.isFalse(spy.called);
      });
    }

    // Keycodes: 32 for Space, 13 for Enter.
    for (const key of [32, 13]) {
      test('stops click event on keycode ' + key, () => {
        const tapSpy = sandbox.spy();
        element.addEventListener('click', tapSpy);
        MockInteractions.pressAndReleaseKeyOn(element, key);
        assert.isFalse(tapSpy.called);
      });
    }
  });

  suite('reporting', () => {
    let reportStub;
    setup(() => {
      reportStub = sandbox.stub(appContext.reportingService,
          'reportInteraction');
      reportStub.reset();
    });

    test('report event after click', () => {
      MockInteractions.click(element);
      assert.isTrue(reportStub.calledOnce);
      assert.equal(reportStub.lastCall.args[0], 'button-click');
      assert.deepEqual(reportStub.lastCall.args[1], {
        path: 'html>body>test-fixture#basic>gr-button',
      });
    });

    test('report event after click on nested', () => {
      element = fixture('nested');
      MockInteractions.click(element.querySelector('gr-button'));
      assert.isTrue(reportStub.calledOnce);
      assert.equal(reportStub.lastCall.args[0], 'button-click');
      assert.deepEqual(reportStub.lastCall.args[1], {
        path: 'html>body>test-fixture#nested>div#test>gr-button.testBtn',
      });
    });
  });
});
</script>