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Fix paper tooltip fit to visible bounds. #155

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8 changes: 6 additions & 2 deletions paper-tooltip.js
Original file line number Diff line number Diff line change
Expand Up @@ -473,17 +473,21 @@ Polymer({
if (parentRect.left + tooltipLeft + thisRect.width > window.innerWidth) {
this.style.right = '0px';
this.style.left = 'auto';
} else {
} else if (parentRect.left + tooltipLeft < 0) {
this.style.left = Math.max(0, tooltipLeft) + 'px';
this.style.right = 'auto';
} else {
this.style.left = tooltipLeft + 'px';
}
// Clip the top/bottom side.
if (parentRect.top + tooltipTop + thisRect.height > window.innerHeight) {
this.style.bottom = (parentRect.height - targetTop + offset) + 'px';
this.style.top = 'auto';
} else {
} else if (parentRect.top + tooltipTop < 0) {
this.style.top = Math.max(-parentRect.top, tooltipTop) + 'px';
this.style.bottom = 'auto';
} else {
this.style.top = tooltipTop + 'px';
}
} else {
this.style.left = tooltipLeft + 'px';
Expand Down
48 changes: 48 additions & 0 deletions test/basic.html
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,16 @@
</template>
</test-fixture>

<test-fixture id="basic-fitted">
<template>
<div>
<div id="target"></div>
<paper-tooltip for="target" animation-delay="0" fit-to-visible-bounds>Tooltip text</paper-tooltip>
</div>
</template>
</test-fixture>


<test-fixture id="fitted">
<template>
<div>
Expand Down Expand Up @@ -353,6 +363,44 @@
expectToBasicallyEqual(contentRect.top, divRect.height + tooltip.offset);
});

test('tooltip is fitted correctly if in bounds', function() {
var f = fixture('basic-fitted');
var target = f.querySelector('#target');
var tooltip = f.querySelector('paper-tooltip');

var actualTooltip = dom(tooltip.root).querySelector('#tooltip');
assert.isTrue(isHidden(actualTooltip));

MockInteractions.focus(target);
assert.isFalse(isHidden(actualTooltip));

console.log('divrect')
var divRect = target.getBoundingClientRect();
expectToBasicallyEqual(divRect.width, 100);
expectToBasicallyEqual(divRect.height, 20);

console.log('contentrect')
var divRect = target.getBoundingClientRect();
var contentRect = tooltip.getBoundingClientRect();
expectToBasicallyEqual(contentRect.width, 70);
expectToBasicallyEqual(contentRect.height, 30);

console.log('positioning')
console.log('content left' + contentRect.left)
console.log('content top' + contentRect.top)
// The target div width is 100, and the tooltip width is 70, and
// it's centered. The height of the target div is 20, and the
// tooltip is 14px below.
expectToBasicallyEqual(contentRect.left, (100 - 70) / 2);
expectToBasicallyEqual(contentRect.top, 20 + 14);

console.log('positioning2')
// Also check the math, just in case.
expectToBasicallyEqual(
contentRect.left, (divRect.width - contentRect.width) / 2);
expectToBasicallyEqual(contentRect.top, divRect.height + tooltip.offset);
});

test(
'tooltip is positioned correctly after being dynamically set',
function() {
Expand Down