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<!doctype html>
<html>
<head>
<link rel="stylesheet" href="chrome://resources/css/text_defaults.css">
<style>
body {
display: flex;
flex-direction: column;
margin: 0;
}
#header,
#footer {
display: flex;
flex: none;
}
#header {
align-items: flex-start;
padding-top: 15pt;
}
#footer {
align-items: flex-end;
padding-bottom: 15pt;
}
#content {
flex: auto;
}
.left {
flex: none;
padding-left: 24pt; /* csschecker-disable-line left-right */
padding-right: 6pt; /* csschecker-disable-line left-right */
}
.center {
flex: auto;
padding-left: 24pt; /* csschecker-disable-line left-right */
padding-right: 24pt; /* csschecker-disable-line left-right */
text-align: center;
}
.right {
flex: none;
/* historically does not account for RTL */
padding-left: 6pt; /* csschecker-disable-line left-right */
padding-right: 24pt; /* csschecker-disable-line left-right */
}
.grow {
flex: auto;
}
.text {
font-size: 8pt;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}
</style>
<script>
function getComputedStyleAsFloat(style, value) {
return parseFloat(style.getPropertyValue(value).slice(0, -2));
}
function elementIntersects(element, topPos, bottomPos, leftPos, rightPos) {
const rect = element.getBoundingClientRect();
const style = window.getComputedStyle(element);
// Only consider the size of |element|, so remove the padding from |rect|.
// The padding is used for positioning.
rect.top += getComputedStyleAsFloat(style, 'padding-top');
rect.bottom -= getComputedStyleAsFloat(style, 'padding-bottom');
rect.left += getComputedStyleAsFloat(style, 'padding-left');
rect.right -= getComputedStyleAsFloat(style, 'padding-right');
return leftPos < rect.right && rightPos > rect.left && topPos < rect.bottom &&
bottomPos > rect.top;
}
function setupHeaderFooterTemplate(options) {
const body = document.querySelector('body');
const header = document.querySelector('#header');
const footer = document.querySelector('#footer');
body.style.width = `${options.width}px`;
body.style.height = `${options.height}px`;
header.style.height = `${options.topMargin}px`;
footer.style.height = `${options.bottomMargin}px`;
const topMargin = options.topMargin;
const bottomMargin = options.height - options.bottomMargin;
const leftMargin = options.leftMargin;
const rightMargin = options.width - options.rightMargin;
header.innerHTML = options['headerTemplate'] || `
<div id=-internal-print-header class='date text left'></div>
<div id=-internal-print-header class='title text center'></div>`;
footer.innerHTML = options['footerTemplate'] || `
<div id=-internal-print-footer class='url text left grow'></div>
<div id=-internal-print-page-number class='text right'>
<span class='pageNumber' id=-internal-print-page-number></span>/<span class='totalPages' id=-internal-print-page-number></span>
</div>`;
const date = new Date(options.date);
const formatter =
new Intl.DateTimeFormat(
navigator.languages[0].split('@')[0],
{ dateStyle: 'short', timeStyle: 'short' });
options.date = formatter.format(date);
for (const cssClass of ['date', 'title', 'url', 'pageNumber', 'totalPages']) {
for (const element of document.querySelectorAll(`.${cssClass}`)) {
element.textContent = options[cssClass];
}
}
for (const element of document.querySelectorAll(`.text`)) {
if (options.isRtl &&
!element.classList.contains('url') &&
!element.classList.contains('title')) {
element.dir = 'rtl';
}
if (elementIntersects(element, topMargin, bottomMargin, leftMargin,
rightMargin)) {
element.style.visibility = 'hidden';
}
}
}
</script>
</head>
<body>
<div id="header"></div>
<div id="content"></div>
<div id="footer"></div>
</body>
</html>
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