// Copyright 2008 The Closure Library Authors. All Rights Reserved.
//
// 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.

goog.provide('goog.editor.ClickToEditWrapperTest');
goog.setTestOnly('goog.editor.ClickToEditWrapperTest');

goog.require('goog.dom');
goog.require('goog.dom.Range');
goog.require('goog.dom.TagName');
goog.require('goog.editor.ClickToEditWrapper');
goog.require('goog.editor.SeamlessField');
goog.require('goog.testing.MockClock');
goog.require('goog.testing.events');
goog.require('goog.testing.jsunit');

var FIELD;
var CLOCK;
var HTML;

function setUp() {
  HTML = goog.dom.getElement('root').innerHTML;
  CLOCK = new goog.testing.MockClock(true);

  // The following 3 lines are to get around an IE bug where it says
  // 'Incompatible markup pointers for this operation'.
  // Must be done in the setup, not teardown, or else it won't take effect for
  // the first test that is run, or any test that runs immediately after a
  // "breaking async" message from the jsunit framework.
  goog.dom.Range.clearSelection();
  window.blur();
  window.focus();
}

/** @param {boolean=} opt_isBlended */
function setUpField(opt_isBlended) {
  FIELD = opt_isBlended ? new goog.editor.SeamlessField('testField') :
                          new goog.editor.SeamlessField('testField');

  (new goog.editor.ClickToEditWrapper(FIELD));

  goog.dom.Range.clearSelection();
}

function tearDown() {
  if (FIELD) {
    FIELD.dispose();
  }

  CLOCK.dispose();

  goog.dom.getElement('root').innerHTML = HTML;
}

function testClickToEdit(opt_isBlended) {
  setUpField(opt_isBlended);

  var text = goog.dom.getElement('testField').firstChild;
  goog.dom.Range.createFromNodes(text, 4, text, 8).select();

  goog.testing.events.fireClickSequence(text.parentNode);

  assertFalse(
      'Field should not be made editable immediately after clicking',
      FIELD.isLoaded());
  CLOCK.tick(1);
  assertTrue('Field should be editable', FIELD.isLoaded());

  var dom = FIELD.getEditableDomHelper();
  var selection = goog.dom.Range.createFromWindow(dom.getWindow());

  var body = FIELD.getElement();
  text = body.firstChild;

  assertEquals('Wrong start node', text, selection.getStartNode());
  assertEquals('Wrong end node', text, selection.getEndNode());
  assertEquals('Wrong start offset', 4, selection.getStartOffset());
  assertEquals('Wrong end offset', 8, selection.getEndOffset());
}

function testBlendedClickToEdit() {
  testClickToEdit(true);
}


function testClickToEditWithAnchor(opt_isBlended) {
  setUpField(opt_isBlended);

  goog.dom.getElement('testAnchor').focus();
  goog.testing.events.fireClickSequence(goog.dom.getElement('testAnchor'));

  CLOCK.tick(1);
  assertTrue('Field should be editable', FIELD.isLoaded());

  var dom = FIELD.getEditableDomHelper();
  var selection = goog.dom.Range.createFromWindow(dom.getWindow());

  // TODO(brndn): the location of the cursor is not yet specified by the W3C
  // Editing APIs (https://dvcs.w3.org/hg/editing/raw-file/tip/editing.html).
  // See b/15678403.  IE and some webkit (all Safari, and up to Chrome 57)
  // return the end of the previous text node, while other browsers return
  // the start of the next node.
  var body = FIELD.getElement();
  var text = body.firstChild;
  var link = dom.getElementsByTagNameAndClass(goog.dom.TagName.A, null, body)[0]
                 .firstChild;
  if (selection.getStartNode() == text) {
    assertEquals('Wrong start node', text, selection.getStartNode());
    assertEquals('Wrong start offset', 17, selection.getStartOffset());
    assertEquals('Wrong end node', text, selection.getEndNode());
    assertEquals('Wrong end offset', 17, selection.getEndOffset());
  } else {
    assertEquals('Wrong start node', link, selection.getStartNode());
    assertEquals('Wrong start offset', 0, selection.getStartOffset());
    assertEquals('Wrong end node', link, selection.getEndNode());
    assertEquals('Wrong end offset', 0, selection.getEndOffset());
  }
}

function testBlendedClickToEditWithAnchor() {
  testClickToEditWithAnchor(true);
}