1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
"use strict";
const DOMException = require("domexception/webidl2js-wrapper");
const { documentBaseURLSerialized, parseURLToResultingURLRecord } = require("../helpers/document-base-url.js");
// https://html.spec.whatwg.org/#history-3
exports.implementation = class HistoryImpl {
constructor(globalObject, args, privateData) {
this._window = privateData.window;
this._document = privateData.document;
this._actAsIfLocationReloadCalled = privateData.actAsIfLocationReloadCalled;
this._state = null;
this._globalObject = globalObject;
}
_guardAgainstInactiveDocuments() {
if (!this._window) {
throw DOMException.create(this._globalObject, [
"History object is associated with a document that is not fully active.",
"SecurityError"
]);
}
}
get length() {
this._guardAgainstInactiveDocuments();
return this._window._sessionHistory.length;
}
get state() {
this._guardAgainstInactiveDocuments();
return this._state;
}
go(delta) {
this._guardAgainstInactiveDocuments();
if (delta === 0) {
// When the go(delta) method is invoked, if delta is zero, the user agent must act as
// if the location.reload() method was called instead.
this._actAsIfLocationReloadCalled();
} else {
// Otherwise, the user agent must traverse the history by a delta whose value is delta
this._window._sessionHistory.traverseByDelta(delta);
}
}
back() {
this.go(-1);
}
forward() {
this.go(+1);
}
pushState(data, title, url) {
this._sharedPushAndReplaceState(data, title, url, "pushState");
}
replaceState(data, title, url) {
this._sharedPushAndReplaceState(data, title, url, "replaceState");
}
// https://html.spec.whatwg.org/#dom-history-pushstate
_sharedPushAndReplaceState(data, title, url, methodName) {
this._guardAgainstInactiveDocuments();
// TODO structured clone data
let newURL;
if (url !== null) {
// Not implemented: use of entry settings object's API base URL. Instead we just use the document base URL. The
// difference matters in the case of cross-frame calls.
newURL = parseURLToResultingURLRecord(url, this._document);
if (newURL === null) {
throw DOMException.create(this._globalObject, [
`Could not parse url argument "${url}" to ${methodName} against base URL ` +
`"${documentBaseURLSerialized(this._document)}".`,
"SecurityError"
]);
}
if (newURL.scheme !== this._document._URL.scheme ||
newURL.username !== this._document._URL.username ||
newURL.password !== this._document._URL.password ||
newURL.host !== this._document._URL.host ||
newURL.port !== this._document._URL.port ||
newURL.cannotBeABaseURL !== this._document._URL.cannotBeABaseURL) {
throw DOMException.create(this._globalObject, [
`${methodName} cannot update history to a URL which differs in components other than in ` +
`path, query, or fragment.`,
"SecurityError"
]);
}
// Not implemented: origin check (seems to only apply to documents with weird origins, e.g. sandboxed ones)
} else {
newURL = this._window._sessionHistory.currentEntry.url;
}
if (methodName === "pushState") {
this._window._sessionHistory.removeAllEntriesAfterCurrentEntry();
this._window._sessionHistory.clearHistoryTraversalTasks();
const newEntry = {
document: this._document,
stateObject: data,
title,
url: newURL
};
this._window._sessionHistory.addEntryAfterCurrentEntry(newEntry);
this._window._sessionHistory.updateCurrentEntry(newEntry);
} else {
const { currentEntry } = this._window._sessionHistory;
currentEntry.stateObject = data;
currentEntry.title = title;
currentEntry.url = newURL;
}
// TODO: If the current entry in the session history represents a non-GET request
// (e.g. it was the result of a POST submission) then update it to instead represent
// a GET request.
this._document._URL = newURL;
// arguably it's a bit odd that the state and latestEntry do not belong to the SessionHistory
// but the spec gives them to "History" and "Document" respecively.
this._state = data; // TODO clone again!! O_o
this._document._latestEntry = this._window._sessionHistory.currentEntry;
}
};
|
