mirror of
https://github.com/HeyPuter/firefox.git
synced 2026-11-13 20:14:57 -10:00
Masayuki Nakano
3bb6eca10c
`Selection` stores given ranges directly if and only if it's possible. Therefore, adding a range which is already in the array of `Selection` ranges needs to do nothing. Differential Revision: https://phabricator.services.mozilla.com/D169301
57 lines
2.9 KiB
HTML
57 lines
2.9 KiB
HTML
<!doctype html>
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<html>
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<head>
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<meta charset="utf-8">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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"use strict";
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promise_test(async () => {
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await new Promise(resolve => document.addEventListener("DOMContentLoaded", resolve));
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getSelection().removeAllRanges();
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const range = document.createRange();
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range.setStart(document.querySelector("span"), 0);
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getSelection().addRange(range);
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getSelection().addRange(range);
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assert_equals(getSelection().rangeCount, 1, "Adding same collapsed range twice should not clone the range");
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assert_equals(getSelection().getRangeAt(0), range, "The first range should be the added range");
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assert_equals(getSelection().focusNode, document.querySelector("span"), "Focus node should be the <span>");
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assert_equals(getSelection().focusOffset, 0, "Focus offset should be 0");
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assert_true(getSelection().isCollapsed, "Selection should be collapsed");
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}, "Adding same collapsed range should not change selections");
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promise_test(async () => {
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getSelection().removeAllRanges();
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const range = document.createRange();
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range.selectNodeContents(document.querySelector("div"));
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getSelection().addRange(range);
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getSelection().addRange(range);
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assert_equals(getSelection().rangeCount, 1, "Adding same range twice should not clone the range");
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assert_equals(getSelection().getRangeAt(0), range, "The first range should be the added range");
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assert_equals(getSelection().anchorNode, document.querySelector("div"), "Anchor node should be the <div>");
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assert_equals(getSelection().anchorOffset, 0, "Anchor offset should be 0");
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assert_equals(getSelection().focusNode, document.querySelector("div"), "Focus node should be the <div>");
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assert_equals(getSelection().focusOffset, 1, "Focus offset should be 1");
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}, "Adding non-collapsed range after updating the range should not change selections");
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promise_test(async () => {
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getSelection().removeAllRanges();
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const range = document.createRange();
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range.collapse(document.querySelector("span"), 0);
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getSelection().addRange(range);
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range.selectNodeContents(document.querySelector("div"));
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getSelection().addRange(range);
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assert_equals(getSelection().rangeCount, 1, "Adding same range twice should not clone the range");
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assert_equals(getSelection().getRangeAt(0), range, "The first range should be the added range");
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assert_equals(getSelection().anchorNode, document.querySelector("div"), "Anchor node should be the <div>");
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assert_equals(getSelection().anchorOffset, 0, "Anchor offset should be 0");
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assert_equals(getSelection().focusNode, document.querySelector("div"), "Focus node should be the <div>");
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assert_equals(getSelection().focusOffset, 1, "Focus offset should be 1");
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}, "Adding same collapsed range after updating the range should not change selections");
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</script>
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</head>
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<body><div><span></span></div></body>
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</html>
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