| <!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN"> |
| <html> |
| <head> |
| <script src="../../../resources/js-test.js"></script> |
| </head> |
| <body> |
| <script> |
| description('Test JS objects as NodeFilters.'); |
| |
| var walker; |
| var testElement = document.createElement("div"); |
| testElement.id = 'root'; |
| testElement.innerHTML='<div id="A1"><div id="B1"></div><div id="B2"></div></div>'; |
| |
| function filter(node) |
| { |
| debug(" filtering node " + node.id + " [this=" + this + "]"); |
| if (node.id == "B1") |
| return NodeFilter.FILTER_SKIP; |
| return NodeFilter.FILTER_ACCEPT; |
| } |
| |
| debug("Testing with raw function filter"); |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, filter, false); |
| shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'"); |
| shouldBe("walker.nextNode(); walker.currentNode.id", "'B2'"); |
| |
| function strictFilter(node) |
| { |
| "use strict"; |
| debug(" filtering node " + node.id + " [this=" + this + "]"); |
| if (node.id == "B1") |
| return NodeFilter.FILTER_SKIP; |
| return NodeFilter.FILTER_ACCEPT; |
| } |
| |
| debug("<br>Testing with strict raw function filter"); |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, strictFilter, false); |
| shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'"); |
| shouldBe("walker.nextNode(); walker.currentNode.id", "'B2'"); |
| |
| debug("<br>Testing with object filter"); |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, { |
| toString : function() { |
| return "custom node filter"; |
| }, |
| acceptNode : function(node) { |
| debug(" filtering node " + node.id + " [this=" + this + "]"); |
| if (node.id == "B1") |
| return NodeFilter.FILTER_SKIP; |
| return NodeFilter.FILTER_ACCEPT; |
| } |
| }, false); |
| |
| shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'"); |
| shouldBe("walker.nextNode(); walker.currentNode.id", "'B2'"); |
| |
| debug("<br>Testing with null filter"); |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, null, false); |
| |
| shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'"); |
| shouldBe("walker.nextNode(); walker.currentNode.id", "'B1'"); |
| |
| debug("<br>Testing with undefined filter"); |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, undefined, false); |
| |
| shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'"); |
| shouldBe("walker.nextNode(); walker.currentNode.id", "'B1'"); |
| |
| debug("<br>Testing with object lacking acceptNode property"); |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, {}, false); |
| |
| shouldThrow("walker.firstChild();"); |
| shouldBe("walker.currentNode.id;", "'root'"); |
| shouldThrow("walker.nextNode();"); |
| shouldBe("walker.currentNode.id;", "'root'"); |
| |
| debug("<br>Testing with object with non-function acceptNode property"); |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, { acceptNode: "foo" }, false); |
| |
| shouldThrow("walker.firstChild();"); |
| shouldBe("walker.currentNode.id;", "'root'"); |
| shouldThrow("walker.nextNode();"); |
| shouldBe("walker.currentNode.id;", "'root'"); |
| |
| debug("<br>Testing with function having acceptNode function"); |
| var filter = function() { return NodeFilter.FILTER_ACCEPT; }; |
| filter.acceptNode = function(node) { return NodeFilter.FILTER_SKIP; }; |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, filter, false); |
| |
| shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'"); |
| shouldBe("walker.nextNode(); walker.currentNode.id", "'B1'"); |
| |
| debug("<br>Testing acceptNode callee"); |
| var filter = { |
| acceptNode: function(node) { |
| debug('Callee: ' + arguments.callee); |
| return NodeFilter.FILTER_ACCEPT; |
| } |
| }; |
| walker = document.createTreeWalker(testElement, NodeFilter.SHOW_ELEMENT, filter, false); |
| |
| shouldBe("walker.firstChild(); walker.currentNode.id", "'A1'"); |
| </script> |
| </body> |
| </html> |
