Wyatt Allen 9fcec7437f Generate clipboard data via diff rather than DOM reconstruction
This change uses a new method of generating the clipboard data that
circumvents several strange issues caused by shadow/shady DOM. This
new method is much more legible and abstracts more logic away from the
DOM.

Bug: Issue 4494
Change-Id: I8c186d6cbbe9536548d934f734856b1f9ced1a26
2016-09-13 14:24:57 -07:00

176 lines
6.0 KiB
HTML

<!DOCTYPE html>
<!--
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.
-->
<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-diff-selection</title>
<script src="../../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="gr-diff-selection.html">
<test-fixture id="basic">
<template>
<gr-diff-selection>
<table class="side-by-side">
<tr>
<td class="lineNum left" data-value="1">1</td>
<td class="content">
<div class="contentText" data-side="left">ba ba</div>
</td>
<td class="lineNum right" data-value="1">1</td>
<td class="content">
<div class="contentText" data-side="right">some other text</div>
</td>
</tr>
<tr>
<td class="lineNum left" data-value="2">2</td>
<td class="content">
<div class="contentText" data-side="left">zin</div>
</td>
<td class="lineNum right" data-value="2">2</td>
<td class="content">
<div class="contentText" data-side="right">more more more</div>
</td>
</tr>
<tr>
<td class="lineNum left" data-value="3">3</td>
<td class="content">
<div class="contentText" data-side="left">ga ga</div>
</td>
<td class="lineNum right" data-value="3">3</td>
<td class="other">
<div class="contentText" data-side="right">some other text</div>
</td>
</tr>
</table>
</gr-diff-selection>
</template>
</test-fixture>
<script>
suite('gr-diff-selection', function() {
var element;
var emulateCopyOn = function(target) {
var fakeEvent = {
target: target,
preventDefault: sinon.stub(),
clipboardData: {
setData: sinon.stub(),
},
};
element._handleCopy(fakeEvent);
return fakeEvent;
};
setup(function() {
element = fixture('basic');
element._cachedDiffBuilder = {
getLineElByChild: sinon.stub().returns({}),
getSideByLineEl: sinon.stub(),
};
element.diff = {
content: [
{
a: ['ba ba'],
b: ['some other text'],
},
{
a: ['zin'],
b: ['more more more'],
},
{
a: ['ga ga'],
b: ['some other text'],
},
],
};
});
test('applies selected-left on left side click', function() {
element.classList.add('selected-right');
element._cachedDiffBuilder.getSideByLineEl.returns('left');
MockInteractions.down(element);
assert.isTrue(
element.classList.contains('selected-left'), 'adds selected-left');
assert.isFalse(
element.classList.contains('selected-right'),
'removes selected-right');
});
test('applies selected-right on right side click', function() {
element.classList.add('selected-left');
element._cachedDiffBuilder.getSideByLineEl.returns('right');
MockInteractions.down(element);
assert.isTrue(
element.classList.contains('selected-right'), 'adds selected-right');
assert.isFalse(
element.classList.contains('selected-left'), 'removes selected-left');
});
test('ignores copy for non-content Element', function() {
sinon.stub(element, '_getSelectedText');
emulateCopyOn(element.querySelector('.other'));
assert.isFalse(element._getSelectedText.called);
});
test('asks for text for right side Elements', function() {
element._cachedDiffBuilder.getSideByLineEl.returns('left');
sinon.stub(element, '_getSelectedText');
emulateCopyOn(element.querySelector('div.contentText'));
assert.deepEqual(['left'], element._getSelectedText.lastCall.args);
});
test('reacts to copy for content Elements', function() {
sinon.stub(element, '_getSelectedText');
emulateCopyOn(element.querySelector('div.contentText'));
assert.isTrue(element._getSelectedText.called);
});
test('copy event is prevented for content Elements', function() {
sinon.stub(element, '_getSelectedText');
var event = emulateCopyOn(element.querySelector('div.contentText'));
assert.isTrue(event.preventDefault.called);
});
test('inserts text into clipboard on copy', function() {
sinon.stub(element, '_getSelectedText').returns('the text');
var event = emulateCopyOn(element.querySelector('div.contentText'));
assert.deepEqual(
['Text', 'the text'], event.clipboardData.setData.lastCall.args);
});
test('copies content correctly', function() {
element.classList.add('selected-left');
element.classList.remove('selected-right');
// Fetch the line number.
element._cachedDiffBuilder.getLineElByChild = function(child) {
return child.parentElement.parentElement.previousElementSibling;
};
var selection = window.getSelection();
var range = document.createRange();
range.setStart(element.querySelector('div.contentText').firstChild, 3);
range.setEnd(
element.querySelectorAll('div.contentText')[4].firstChild, 2);
selection.addRange(range);
assert.equal(element._getSelectedText('left'), 'ba\nzin\nga');
});
});
</script>