зеркало из https://github.com/mozilla/gecko-dev.git
149 строки
5.6 KiB
HTML
149 строки
5.6 KiB
HTML
<!doctype html>
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<title>Selection extend() tests</title>
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<meta charset=utf-8>
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<body>
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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 src=common.js></script>
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<div id=log></div>
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<script>
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"use strict";
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// Also test a selection with no ranges
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testRanges.unshift("[]");
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/**
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* We test Selections that go both forwards and backwards here. In the latter
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* case we need to use extend() to force it to go backwards, which is fair
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* enough, since that's what we're testing. We test collapsed selections only
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* once.
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*/
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for (var i = 0; i < testRanges.length; i++) {
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var endpoints = eval(testRanges[i]);
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for (var j = 0; j < testPoints.length; j++) {
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if (endpoints[0] == endpoints[2]
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&& endpoints[1] == endpoints[3]) {
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// Test collapsed selections only once
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test(function() {
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setSelectionForwards(endpoints);
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testExtend(endpoints, eval(testPoints[j]));
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}, "extend() with range " + i + " " + testRanges[i]
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+ " and point " + j + " " + testPoints[j]);
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} else {
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test(function() {
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setSelectionForwards(endpoints);
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testExtend(endpoints, eval(testPoints[j]));
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}, "extend() forwards with range " + i + " " + testRanges[i]
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+ " and point " + j + " " + testPoints[j]);
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test(function() {
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setSelectionBackwards(endpoints);
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testExtend(endpoints, eval(testPoints[j]));
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}, "extend() backwards with range " + i + " " + testRanges[i]
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+ " and point " + j + " " + testPoints[j]);
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}
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}
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}
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function testExtend(endpoints, target) {
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assert_equals(getSelection().rangeCount, endpoints.length/4,
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"Sanity check: rangeCount must be correct");
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var node = target[0];
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var offset = target[1];
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// "If the context object's range is null, throw an InvalidStateError
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// exception and abort these steps."
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if (getSelection().rangeCount == 0) {
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assert_throws("INVALID_STATE_ERR", function() {
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selection.extend(node, offset);
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}, "extend() when rangeCount is 0 must throw InvalidStateError");
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return;
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}
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assert_equals(getSelection().getRangeAt(0).startContainer, endpoints[0],
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"Sanity check: startContainer must be correct");
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assert_equals(getSelection().getRangeAt(0).startOffset, endpoints[1],
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"Sanity check: startOffset must be correct");
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assert_equals(getSelection().getRangeAt(0).endContainer, endpoints[2],
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"Sanity check: endContainer must be correct");
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assert_equals(getSelection().getRangeAt(0).endOffset, endpoints[3],
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"Sanity check: endOffset must be correct");
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// "Let anchor and focus be the context object's anchor and focus, and let
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// new focus be the boundary point (node, offset)."
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var anchorNode = getSelection().anchorNode;
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var anchorOffset = getSelection().anchorOffset;
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var focusNode = getSelection().focusNode;
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var focusOffset = getSelection().focusOffset;
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// "Let new range be a new range."
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//
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// We'll always be setting either new range's start or its end to new
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// focus, so we'll always throw at some point. Test that now.
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//
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// From DOM4's "set the start or end of a range": "If node is a doctype,
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// throw an "InvalidNodeTypeError" exception and terminate these steps."
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if (node.nodeType == Node.DOCUMENT_TYPE_NODE) {
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assert_throws("INVALID_NODE_TYPE_ERR", function() {
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selection.extend(node, offset);
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}, "extend() to a doctype must throw InvalidNodeTypeError");
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return;
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}
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// From DOM4's "set the start or end of a range": "If offset is greater
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// than node's length, throw an "IndexSizeError" exception and terminate
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// these steps."
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//
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// FIXME: We should be casting offset to an unsigned int per WebIDL. Until
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// we do, we need the offset < 0 check too.
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if (offset < 0 || offset > getNodeLength(node)) {
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assert_throws("INDEX_SIZE_ERR", function() {
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selection.extend(node, offset);
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}, "extend() to an offset that's greater than node length (" + getNodeLength(node) + ") must throw IndexSizeError");
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return;
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}
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// Now back to the editing spec.
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var originalRange = getSelection().getRangeAt(0);
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// "If node's root is not the same as the context object's range's root,
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// set new range's start and end to (node, offset)."
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//
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// "Otherwise, if anchor is before or equal to new focus, set new range's
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// start to anchor, then set its end to new focus."
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//
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// "Otherwise, set new range's start to new focus, then set its end to
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// anchor."
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//
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// "Set the context object's range to new range."
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//
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// "If new focus is before anchor, set the context object's direction to
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// backwards. Otherwise, set it to forwards."
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//
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// The upshot of all these is summed up by just testing the anchor and
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// offset.
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getSelection().extend(node, offset);
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if (furthestAncestor(anchorNode) == furthestAncestor(node)) {
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assert_equals(getSelection().anchorNode, anchorNode,
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"anchorNode must not change if the node passed to extend() has the same root as the original range");
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assert_equals(getSelection().anchorOffset, anchorOffset,
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"anchorOffset must not change if the node passed to extend() has the same root as the original range");
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} else {
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assert_equals(getSelection().anchorNode, node,
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"anchorNode must be the node passed to extend() if it has a different root from the original range");
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assert_equals(getSelection().anchorOffset, offset,
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"anchorOffset must be the offset passed to extend() if the node has a different root from the original range");
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}
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assert_equals(getSelection().focusNode, node,
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"focusNode must be the node passed to extend()");
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assert_equals(getSelection().focusOffset, offset,
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"focusOffset must be the offset passed to extend()");
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assert_not_equals(getSelection().getRangeAt(0), originalRange,
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"extend() must replace any existing range with a new one, not mutate the existing one");
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}
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testDiv.style.display = "none";
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</script>
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