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Copyright (C) 2016 The Android Open Source Project

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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>keyboard-shortcut-behavior</title>

<script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
<script src="../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../test/common-test-setup.html"/>
<link rel="import" href="keyboard-shortcut-behavior.html">

<test-fixture id="basic">
  <template>
    <test-element></test-element>
  </template>
</test-fixture>

<test-fixture id="within-overlay">
  <template>
    <gr-overlay>
      <test-element></test-element>
    </gr-overlay>
  </template>
</test-fixture>

<script>
  suite('keyboard-shortcut-behavior tests', () => {
    const kb = window.Gerrit.KeyboardShortcutBinder;

    let element;
    let overlay;
    let sandbox;

    suiteSetup(() => {
      // Define a Polymer element that uses this behavior.
      Polymer({
        is: 'test-element',
        behaviors: [Gerrit.KeyboardShortcutBehavior],
        keyBindings: {
          k: '_handleKey',
          enter: '_handleKey',
        },
        _handleKey() {},
      });
    });

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

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

    suite('ShortcutManager', () => {
      test('bindings management', () => {
        const mgr = new kb.ShortcutManager();
        const {NEXT_FILE} = kb.Shortcut;

        assert.isUndefined(mgr.getBindingsForShortcut(NEXT_FILE));
        mgr.bindShortcut(NEXT_FILE, ']', '}', 'right');
        assert.deepEqual(
            mgr.getBindingsForShortcut(NEXT_FILE),
            [']', '}', 'right']);
      });

      suite('binding descriptions', () => {
        function mapToObject(m) {
          const o = {};
          m.forEach((v, k) => o[k] = v);
          return o;
        }

        test('single combo description', () => {
          const mgr = new kb.ShortcutManager();
          assert.deepEqual(mgr.describeBinding('a'), ['a']);
          assert.deepEqual(mgr.describeBinding('a:keyup'), ['a']);
          assert.deepEqual(mgr.describeBinding('ctrl+a'), ['Ctrl', 'a']);
          assert.deepEqual(
              mgr.describeBinding('ctrl+shift+up:keyup'),
              ['Ctrl', 'Shift', '↑']);
        });

        test('combo set description', () => {
          const {GO_KEY, DOC_ONLY, ShortcutManager} = kb;
          const {GO_TO_OPENED_CHANGES, NEXT_FILE, PREV_FILE} = kb.Shortcut;

          const mgr = new ShortcutManager();
          assert.isNull(mgr.describeBindings(NEXT_FILE));

          mgr.bindShortcut(GO_TO_OPENED_CHANGES, GO_KEY, 'o');
          assert.deepEqual(
              mgr.describeBindings(GO_TO_OPENED_CHANGES),
              [['g', 'o']]);

          mgr.bindShortcut(NEXT_FILE, DOC_ONLY, ']', 'ctrl+shift+right:keyup');
          assert.deepEqual(
              mgr.describeBindings(NEXT_FILE),
              [[']'], ['Ctrl', 'Shift', '→']]);

          mgr.bindShortcut(PREV_FILE, '[');
          assert.deepEqual(mgr.describeBindings(PREV_FILE), [['[']]);
        });

        test('combo set description width', () => {
          const mgr = new kb.ShortcutManager();
          assert.strictEqual(mgr.comboSetDisplayWidth([['u']]), 1);
          assert.strictEqual(mgr.comboSetDisplayWidth([['g', 'o']]), 2);
          assert.strictEqual(mgr.comboSetDisplayWidth([['Shift', 'r']]), 6);
          assert.strictEqual(mgr.comboSetDisplayWidth([['x'], ['y']]), 4);
          assert.strictEqual(
              mgr.comboSetDisplayWidth([['x'], ['y'], ['Shift', 'z']]),
              12);
        });

        test('distribute shortcut help', () => {
          const mgr = new kb.ShortcutManager();
          assert.deepEqual(mgr.distributeBindingDesc([['o']]), [[['o']]]);
          assert.deepEqual(
              mgr.distributeBindingDesc([['g', 'o']]),
              [[['g', 'o']]]);
          assert.deepEqual(
              mgr.distributeBindingDesc([['ctrl', 'shift', 'meta', 'enter']]),
              [[['ctrl', 'shift', 'meta', 'enter']]]);
          assert.deepEqual(
              mgr.distributeBindingDesc([
                ['ctrl', 'shift', 'meta', 'enter'],
                ['o'],
              ]),
              [
                [['ctrl', 'shift', 'meta', 'enter']],
                [['o']],
              ]);
          assert.deepEqual(
              mgr.distributeBindingDesc([
                ['ctrl', 'enter'],
                ['meta', 'enter'],
                ['ctrl', 's'],
                ['meta', 's'],
              ]),
              [
                [['ctrl', 'enter'], ['meta', 'enter']],
                [['ctrl', 's'], ['meta', 's']],
              ]);
        });

        test('active shortcuts by section', () => {
          const {NEXT_FILE, NEXT_LINE, GO_TO_OPENED_CHANGES, SEARCH} =
              kb.Shortcut;
          const {DIFFS, EVERYWHERE, NAVIGATION} = kb.ShortcutSection;

          const mgr = new kb.ShortcutManager();
          mgr.bindShortcut(NEXT_FILE, ']');
          mgr.bindShortcut(NEXT_LINE, 'j');
          mgr.bindShortcut(GO_TO_OPENED_CHANGES, 'g+o');
          mgr.bindShortcut(SEARCH, '/');

          assert.deepEqual(
              mapToObject(mgr.activeShortcutsBySection()),
              {});

          mgr.attachHost({
            keyboardShortcuts() {
              return {
                [NEXT_FILE]: null,
              };
            },
          });
          assert.deepEqual(
              mapToObject(mgr.activeShortcutsBySection()),
              {
                [NAVIGATION]: [
                  {shortcut: NEXT_FILE, text: 'Select next file'},
                ],
              });

          mgr.attachHost({
            keyboardShortcuts() {
              return {
                [NEXT_LINE]: null,
              };
            },
          });
          assert.deepEqual(
              mapToObject(mgr.activeShortcutsBySection()),
              {
                [DIFFS]: [
                  {shortcut: NEXT_LINE, text: 'Go to next line'},
                ],
                [NAVIGATION]: [
                  {shortcut: NEXT_FILE, text: 'Select next file'},
                ],
              });

          mgr.attachHost({
            keyboardShortcuts() {
              return {
                [SEARCH]: null,
                [GO_TO_OPENED_CHANGES]: null,
              };
            },
          });
          assert.deepEqual(
              mapToObject(mgr.activeShortcutsBySection()),
              {
                [DIFFS]: [
                  {shortcut: NEXT_LINE, text: 'Go to next line'},
                ],
                [EVERYWHERE]: [
                  {shortcut: SEARCH, text: 'Search'},
                  {
                    shortcut: GO_TO_OPENED_CHANGES,
                    text: 'Go to Opened Changes',
                  },
                ],
                [NAVIGATION]: [
                  {shortcut: NEXT_FILE, text: 'Select next file'},
                ],
              });
        });

        test('directory view', () => {
          const {
            NEXT_FILE, NEXT_LINE, GO_TO_OPENED_CHANGES, SEARCH,
            SAVE_COMMENT,
          } = kb.Shortcut;
          const {DIFFS, EVERYWHERE, NAVIGATION} = kb.ShortcutSection;
          const {GO_KEY, ShortcutManager} = kb;

          const mgr = new ShortcutManager();
          mgr.bindShortcut(NEXT_FILE, ']');
          mgr.bindShortcut(NEXT_LINE, 'j');
          mgr.bindShortcut(GO_TO_OPENED_CHANGES, GO_KEY, 'o');
          mgr.bindShortcut(SEARCH, '/');
          mgr.bindShortcut(
              SAVE_COMMENT, 'ctrl+enter', 'meta+enter', 'ctrl+s', 'meta+s');

          assert.deepEqual(mapToObject(mgr.directoryView()), {});

          mgr.attachHost({
            keyboardShortcuts() {
              return {
                [GO_TO_OPENED_CHANGES]: null,
                [NEXT_FILE]: null,
                [NEXT_LINE]: null,
                [SAVE_COMMENT]: null,
                [SEARCH]: null,
              };
            },
          });
          assert.deepEqual(
              mapToObject(mgr.directoryView()),
              {
                [DIFFS]: [
                  {binding: [['j']], text: 'Go to next line'},
                  {
                    binding: [['Ctrl', 'Enter'], ['Meta', 'Enter']],
                    text: 'Save comment',
                  },
                  {
                    binding: [['Ctrl', 's'], ['Meta', 's']],
                    text: 'Save comment',
                  },
                ],
                [EVERYWHERE]: [
                  {binding: [['/']], text: 'Search'},
                  {binding: [['g', 'o']], text: 'Go to Opened Changes'},
                ],
                [NAVIGATION]: [
                  {binding: [[']']], text: 'Select next file'},
                ],
              });
        });
      });
    });

    test('doesn’t block kb shortcuts for non-whitelisted els', done => {
      const divEl = document.createElement('div');
      element.appendChild(divEl);
      element._handleKey = e => {
        assert.isFalse(element.shouldSuppressKeyboardShortcut(e));
        done();
      };
      MockInteractions.keyDownOn(divEl, 75, null, 'k');
    });

    test('blocks kb shortcuts for input els', done => {
      const inputEl = document.createElement('input');
      element.appendChild(inputEl);
      element._handleKey = e => {
        assert.isTrue(element.shouldSuppressKeyboardShortcut(e));
        done();
      };
      MockInteractions.keyDownOn(inputEl, 75, null, 'k');
    });

    test('blocks kb shortcuts for textarea els', done => {
      const textareaEl = document.createElement('textarea');
      element.appendChild(textareaEl);
      element._handleKey = e => {
        assert.isTrue(element.shouldSuppressKeyboardShortcut(e));
        done();
      };
      MockInteractions.keyDownOn(textareaEl, 75, null, 'k');
    });

    test('blocks kb shortcuts for anything in a gr-overlay', done => {
      const divEl = document.createElement('div');
      const element = overlay.querySelector('test-element');
      element.appendChild(divEl);
      element._handleKey = e => {
        assert.isTrue(element.shouldSuppressKeyboardShortcut(e));
        done();
      };
      MockInteractions.keyDownOn(divEl, 75, null, 'k');
    });

    test('blocks enter shortcut on an anchor', done => {
      const anchorEl = document.createElement('a');
      const element = overlay.querySelector('test-element');
      element.appendChild(anchorEl);
      element._handleKey = e => {
        assert.isTrue(element.shouldSuppressKeyboardShortcut(e));
        done();
      };
      MockInteractions.keyDownOn(anchorEl, 13, null, 'enter');
    });

    test('modifierPressed returns accurate values', () => {
      const spy = sandbox.spy(element, 'modifierPressed');
      element._handleKey = e => {
        element.modifierPressed(e);
      };
      MockInteractions.keyDownOn(element, 75, 'shift', 'k');
      assert.isTrue(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, null, 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, 'ctrl', 'k');
      assert.isTrue(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, null, 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, 'meta', 'k');
      assert.isTrue(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, null, 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, 'alt', 'k');
      assert.isTrue(spy.lastCall.returnValue);
    });

    test('isModifierPressed returns accurate value', () => {
      const spy = sandbox.spy(element, 'isModifierPressed');
      element._handleKey = e => {
        element.isModifierPressed(e, 'shiftKey');
      };
      MockInteractions.keyDownOn(element, 75, 'shift', 'k');
      assert.isTrue(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, null, 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, 'ctrl', 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, null, 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, 'meta', 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, null, 'k');
      assert.isFalse(spy.lastCall.returnValue);
      MockInteractions.keyDownOn(element, 75, 'alt', 'k');
      assert.isFalse(spy.lastCall.returnValue);
    });

    suite('GO_KEY timing', () => {
      let handlerStub;

      setup(() => {
        element._shortcut_go_table.set('a', '_handleA');
        handlerStub = element._handleA = sinon.stub();
        sandbox.stub(Date, 'now').returns(10000);
      });

      test('success', () => {
        const e = {detail: {key: 'a'}, preventDefault: () => {}};
        sandbox.stub(element, 'shouldSuppressKeyboardShortcut').returns(false);
        element._shortcut_go_key_last_pressed = 9000;
        element._handleGoAction(e);
        assert.isTrue(handlerStub.calledOnce);
        assert.strictEqual(handlerStub.lastCall.args[0], e);
      });

      test('go key not pressed', () => {
        const e = {detail: {key: 'a'}, preventDefault: () => {}};
        sandbox.stub(element, 'shouldSuppressKeyboardShortcut').returns(false);
        element._shortcut_go_key_last_pressed = null;
        element._handleGoAction(e);
        assert.isFalse(handlerStub.called);
      });

      test('go key pressed too long ago', () => {
        const e = {detail: {key: 'a'}, preventDefault: () => {}};
        sandbox.stub(element, 'shouldSuppressKeyboardShortcut').returns(false);
        element._shortcut_go_key_last_pressed = 3000;
        element._handleGoAction(e);
        assert.isFalse(handlerStub.called);
      });

      test('should suppress', () => {
        const e = {detail: {key: 'a'}, preventDefault: () => {}};
        sandbox.stub(element, 'shouldSuppressKeyboardShortcut').returns(true);
        element._shortcut_go_key_last_pressed = 9000;
        element._handleGoAction(e);
        assert.isFalse(handlerStub.called);
      });

      test('unrecognized key', () => {
        const e = {detail: {key: 'f'}, preventDefault: () => {}};
        sandbox.stub(element, 'shouldSuppressKeyboardShortcut').returns(false);
        element._shortcut_go_key_last_pressed = 9000;
        element._handleGoAction(e);
        assert.isFalse(handlerStub.called);
      });
    });
  });
</script>