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<!DOCTYPE html>
<html>
<!--
Copyright 2007 The Closure Library Authors. All Rights Reserved.
Use of this source code is governed by the Apache License, Version 2.0.
See the COPYING file for details.
-->
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Closure Unit Tests - goog.dom.selection</title>
<script src="../base.js"></script>
<script>
goog.require('goog.dom');
goog.require('goog.dom.selection');
goog.require('goog.testing.jsunit');
goog.require('goog.userAgent');
</script>
</head>
<body>
<script>
var input;
var hiddenInput;
var textarea;
var hiddenTextarea;
function setUp() {
input = goog.dom.createDom('input', {type: 'text'});
textarea = goog.dom.createDom('textarea');
hiddenInput = goog.dom.createDom(
'input', {type: 'text', style: 'display: none'});
hiddenTextarea = goog.dom.createDom(
'textarea', {style: 'display: none'});
document.body.appendChild(input);
document.body.appendChild(textarea);
document.body.appendChild(hiddenInput);
document.body.appendChild(hiddenTextarea);
}
function tearDown() {
goog.dom.removeNode(input);
goog.dom.removeNode(textarea);
goog.dom.removeNode(hiddenInput);
goog.dom.removeNode(hiddenTextarea);
}
/**
* Tests getStart routine in both input and textarea.
*/
function testGetStartInput() {
getStartHelper(input, hiddenInput);
}
function testGetStartTextarea() {
getStartHelper(textarea, hiddenTextarea);
}
function getStartHelper(field, hiddenField) {
assertEquals(0, goog.dom.selection.getStart(field));
assertEquals(0, goog.dom.selection.getStart(hiddenField));
field.focus();
assertEquals(0, goog.dom.selection.getStart(field));
}
/**
* Tests the setText routine for both input and textarea
* with a single line of text.
*/
function testSetTextInput() {
setTextHelper(input);
}
function testSetTextTextarea() {
setTextHelper(textarea);
}
function setTextHelper(field) {
// Test one line string only
select(field);
assertEquals('', goog.dom.selection.getText(field));
goog.dom.selection.setText(field, 'Get Behind Me Satan');
assertEquals('Get Behind Me Satan', goog.dom.selection.getText(field));
}
/**
* Tests the setText routine for textarea with multiple lines of text.
*/
function testSetTextMultipleLines() {
select(textarea);
assertEquals('', goog.dom.selection.getText(textarea));
var message = goog.userAgent.IE ?
'Get Behind Me\r\nSatan' :
'Get Behind Me\nSatan';
goog.dom.selection.setText(textarea, message);
assertEquals(message, goog.dom.selection.getText(textarea));
// Select the text upto the point just after the \r\n combination
// or \n in GECKO.
var endOfNewline = goog.userAgent.IE ? 15 : 14;
var selectedMessage = message.substring(0, endOfNewline);
goog.dom.selection.setStart(textarea, 0);
goog.dom.selection.setEnd(textarea, endOfNewline);
assertEquals(selectedMessage, goog.dom.selection.getText(textarea));
selectedMessage = goog.userAgent.IE ? '\r\n' : '\n';
goog.dom.selection.setStart(textarea, 13);
goog.dom.selection.setEnd(textarea, endOfNewline);
assertEquals(selectedMessage, goog.dom.selection.getText(textarea));
}
/**
* Tests the setCursor routine for both input and textarea.
*/
function testSetCursorInput() {
setCursorHelper(input);
}
function testSetCursorTextarea() {
setCursorHelper(textarea);
}
function setCursorHelper(field) {
select(field);
// try to set the cursor beyond the length of the content
goog.dom.selection.setStart(field, 5);
goog.dom.selection.setEnd(field, 15);
assertEquals(0, goog.dom.selection.getStart(field));
assertEquals(0, goog.dom.selection.getEnd(field));
select(field);
var message = 'Get Behind Me Satan';
goog.dom.selection.setText(field, message);
goog.dom.selection.setStart(field, 5);
goog.dom.selection.setEnd(field, message.length);
assertEquals(5, goog.dom.selection.getStart(field));
assertEquals(message.length, goog.dom.selection.getEnd(field));
// Set the end before the start, and see if getEnd returns the start
// position itself.
goog.dom.selection.setStart(field, 5);
goog.dom.selection.setEnd(field, 3);
assertEquals(3, goog.dom.selection.getEnd(field));
}
/**
* Tests the getText and setText routines acting on selected text in
* both input and textarea.
*/
function testGetAndSetSelectedTextInput() {
getAndSetSelectedTextHelper(input);
}
function testGetAndSetSelectedTextTextarea() {
getAndSetSelectedTextHelper(textarea);
}
function getAndSetSelectedTextHelper(field) {
select(field);
goog.dom.selection.setText(field, 'Get Behind Me Satan');
// select 'Behind'
goog.dom.selection.setStart(field, 4);
goog.dom.selection.setEnd(field, 10);
assertEquals('Behind', goog.dom.selection.getText(field));
goog.dom.selection.setText(field, 'In Front Of');
goog.dom.selection.setStart(field, 0);
goog.dom.selection.setEnd(field, 100);
assertEquals('Get In Front Of Me Satan', goog.dom.selection.getText(field));
}
/**
* Test setStart on hidden input and hidden textarea.
*/
function testSetCursorOnHiddenInput() {
setCursorOnHiddenInputHelper(hiddenInput);
}
function testSetCursorOnHiddenTextarea() {
setCursorOnHiddenInputHelper(hiddenTextarea);
}
function setCursorOnHiddenInputHelper(hiddenField) {
goog.dom.selection.setStart(hiddenField, 0);
assertEquals(0, goog.dom.selection.getStart(hiddenField));
}
/**
* Test setStart, setEnd, getStart and getEnd in textarea with text
* containing line breaks.
*/
function testSetAndGetCursorWithLineBreaks() {
select(textarea);
var newline = goog.userAgent.IE ? '\r\n' : '\n';
var message = 'Hello' + newline + 'World';
goog.dom.selection.setText(textarea, message);
// Test setEnd and getEnd, by setting the cursor somewhere after the
// \r\n combination.
goog.dom.selection.setEnd(textarea, 9);
assertEquals(9, goog.dom.selection.getEnd(textarea));
// Test basic setStart and getStart
goog.dom.selection.setStart(textarea, 10);
assertEquals(10, goog.dom.selection.getStart(textarea));
// Test setEnd and getEnd, by setting the cursor exactly after the
// \r\n combination in IE or after \n in GECKO.
var endOfNewline = goog.userAgent.IE ? 7 : 6;
checkSetAndGetTextarea(endOfNewline, endOfNewline);
// Select a \r\n combination in IE or \n in GECKO and see if
// getStart and getEnd work correctly.
clearField(textarea);
message = 'Hello' + newline + newline + 'World';
goog.dom.selection.setText(textarea, message);
var startOfNewline = goog.userAgent.IE ? 7 : 6;
endOfNewline = goog.userAgent.IE ? 9 : 7;
checkSetAndGetTextarea(startOfNewline, endOfNewline);
// Select 2 \r\n combinations in IE or 2 \ns in GECKO and see if getStart
// and getEnd work correctly.
checkSetAndGetTextarea(5, endOfNewline);
// Position cursor b/w 2 \r\n combinations in IE or 2 \ns in GECKO and see
// if getStart and getEnd work correctly.
clearField(textarea);
message = 'Hello' + newline + newline + newline + newline + 'World';
goog.dom.selection.setText(textarea, message);
var middleOfNewlines = goog.userAgent.IE ? 9 : 7;
checkSetAndGetTextarea(middleOfNewlines, middleOfNewlines);
// Position cursor at end of a textarea which ends with \r\n in IE or \n in
// GECKO.
clearField(textarea);
message = 'Hello' + newline + newline;
goog.dom.selection.setText(textarea, message);
var endOfTextarea = message.length;
checkSetAndGetTextarea(endOfTextarea, endOfTextarea);
// Position cursor at the end of the 2 starting \r\ns in IE or \ns in GECKO
// within a textarea.
clearField(textarea);
message = newline + newline + 'World';
goog.dom.selection.setText(textarea, message);
var endOfTwoNewlines = goog.userAgent.IE ? 4 : 2;
checkSetAndGetTextarea(endOfTwoNewlines, endOfTwoNewlines);
// Position cursor at the end of the first \r\n in IE or \n in
// GECKO within a textarea.
endOfOneNewline = goog.userAgent.IE ? 2 : 1;
checkSetAndGetTextarea(endOfOneNewline, endOfOneNewline);
}
/**
* Test to make sure there's no error when getting the range of an unselected
* textarea. See bug 1274027.
*/
function testGetStartOnUnfocusedTextarea() {
input.value = 'White Blood Cells';
input.focus();
goog.dom.selection.setCursorPosition(input, 5);
assertEquals('getStart on input should return where we put the cursor',
5, goog.dom.selection.getStart(input));
assertEquals('getStart on unfocused textarea should succeed without error',
0, goog.dom.selection.getStart(textarea));
}
/**
* Test to make sure there's no error setting cursor position within a
* textarea after a newline. This is problematic on IE because of the
* '\r\n' vs '\n' issue.
*/
function testSetCursorPositionTextareaWithNewlines() {
textarea.value = 'Hello\nWorld';
textarea.focus();
// Set the selection point between 'W' and 'o'. Position is computed this
// way instead of being hard-coded because it's different in IE due to \r\n
// vs \n.
goog.dom.selection.setCursorPosition(textarea, textarea.value.length - 4);
var linebreak = goog.userAgent.IE ? '\r\n' : '\n';
var expectedLeftString = 'Hello' + linebreak + 'W';
assertEquals('getStart on input should return after the newline',
expectedLeftString.length, goog.dom.selection.getStart(textarea));
assertEquals('getEnd on input should return after the newline',
expectedLeftString.length, goog.dom.selection.getEnd(textarea));
goog.dom.selection.setEnd(textarea, textarea.value.length);
assertEquals('orld', goog.dom.selection.getText(textarea));
}
/**
* Helper function to clear the textfield contents.
*/
function clearField(field) {
field.value = '';
}
/**
* Helper function to set the start and end and assert the getter values.
*/
function checkSetAndGetTextarea(start, end) {
goog.dom.selection.setStart(textarea, start);
goog.dom.selection.setEnd(textarea, end);
assertEquals(start, goog.dom.selection.getStart(textarea));
assertEquals(end, goog.dom.selection.getEnd(textarea));
}
/**
* Helper function to focus and select a field. In IE8, selected
* fields need focus.
*/
function select(field) {
field.focus();
field.select();
}
</script>
</body>
</html>
|
