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Test Info:

<!DOCTYPE HTML>
<!--
Any copyright is dedicated to the Public Domain.
-->
<html><head>
<meta charset="utf-8">
<title>CSS Grid Test: Fragmentation with forced break propagation</title>
<link rel="author" title="Mats Palmgren" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1144096">
<link rel="match" href="grid-fragmentation-020-ref.html">
<style type="text/css">
html,body {
color:black; background-color:white; font-size:16px; padding:0; margin:0;
}
body { overflow:hidden; }
.columns {
position:relative;
-ms-columns: 5;
-webkit-columns: 5;
columns: 5;
-ms-column-fill: auto;
-webkit-column-fill: auto;
column-fill: auto;
border: 2px dashed;
margin-bottom: 5px;
}
.no-border { border-style:none; }
.grid {
display: grid;
grid-template-columns: 30px;
grid-auto-rows: 10px;
grid-gap: 2px;
border:5px solid;
height: 20px; /* create Class C break opportunities at both ends */
align-content: center;
}
.start {
align-content: start;
}
span { background:lime; border:1px solid black; }
.bb { border-bottom-width:6px; }
x { display:block; height: 40px; }
m { display:block; padding-top:1px; }
.break-before { page-break-before:always; break-before:always; }
.break-after { page-break-after:always; break-after:always; }
.avoid-break { page-break-inside:avoid; break-inside:avoid; }
</style>
</head>
<body>
<div class="columns" style="height:40px">
<div style="background:grey">
<div class="grid">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:40px">
<div style="background:grey">
<div class="grid start">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:40px">
<div style="background:grey">
<div class="grid">
<span class="avoid-break"><x></x></span>
</div></div></div>
<div class="columns" style="height:40px">
<div style="background:grey">
<div class="grid start">
<span class="avoid-break"><x></x></span>
</div></div></div>
<div class="columns" style="height:40px">
<div style="background:grey"><m></m>
<div class="grid">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:40px">
<div style="background:grey"><m></m>
<div class="grid start">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:40px">
<div style="background:grey"><m></m>
<div class="grid">
<span class="avoid-break"><x></x></span>
</div></div></div>
<div class="columns" style="height:40px">
<div style="background:grey"><m></m>
<div class="grid start">
<span class="avoid-break"><x></x></span>
</div></div></div>
<div class="columns" style="height:16px">
<div style="background:grey">
<div class="grid" style="height:10px">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:16px">
<div style="background:grey"><m></m>
<div class="grid" style="height:10px">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:10px">
<div style="background:grey">
<div class="grid" style="height:10px">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:10px">
<div style="background:grey"><m></m>
<div class="grid" style="height:10px">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:0px">
<div style="background:grey">
<div class="grid" style="height:10px">
<span class="break-before"></span>
</div></div></div>
<div class="columns" style="height:0px; margin-top:20px">
<div style="background:grey"><m></m>
<div class="grid" style="height:10px;">
<span class="break-before"></span>
</div></div></div>
<div class="columns no-border" style="height:0px; margin-top:20px">
<div><m></m>
<div class="grid" style="height:10px;grid-auto-rows: 0px;">
<span class="break-before bb"></span>
</div></div></div>
<div class="columns no-border" style="height:0px; margin-top:20px">
<div><m></m>
<div class="grid" style="height:10px;grid-auto-rows: 0px;">
<span class="break-before bb"></span>
<span class="break-before bb"></span>
</div></div></div>
<div class="columns no-border" style="height:0px; margin-top:20px">
<div><m></m>
<div class="grid" style="height:1px;grid-auto-rows: 1px;">
<span class="break-before bb"></span>
</div></div></div>
<div class="columns no-border" style="height:0px; margin-top:20px">
<div><m></m>
<div class="grid" style="height:1px;grid-auto-rows: 1px;">
<span class="break-before bb"></span>
<span class="break-before bb"></span>
</div></div></div>
<div class="columns no-border" style="height:0px; margin-top:20px">
<div><m></m>
<div class="grid" style="height:1px;grid-auto-rows: 11px;">
<span class="break-before bb"></span>
<span class="break-before bb"></span>
</div></div></div>
<div class="columns no-border" style="height:0px; margin-top:20px">
<div><m></m>
<div class="grid" style="height:1px;grid-auto-rows: 11px;">
<span class="break-before bb" style="grid-row:span 2"></span>
<span class="break-before bb"></span>
</div></div></div>
<div class="columns no-border" style="height:0px; margin-top:20px">
<div><m></m>
<div class="grid" style="height:1px;grid-auto-rows: 11px;">
<span class="break-before bb"></span>
<span class="break-before bb" style="grid-row:span 2"></span>
</div></div></div>
<!--
XXX TODO: propagation of break-after on the last row to the container doesn't work.
XXX TODO: I'm guessing the block frame code doesn't know how to deal with that b/c
XXX TODO: it expects the frame constructor to have created a nsPageBreakFrame...
<div class="columns" style="height:40px">
<div style="background:grey">
<div class="grid">
<span class="break-after"></span>
</div>
<div style="border-top:2px solid blue"></div>
</div></div>
<div class="columns" style="height:40px">
<div style="background:grey">
<div class="grid">
<img src="data:image/gif;base64,R0lGODlhAQABAIABAAD/AP///ywAAAAAAQABAAACAkQBADs=" class="break-after"></button>
</div>
<div style="border-top:2px solid blue"></div>
</div></div>
-->
</body>
</html>