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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
import { XPCOMUtils } from "resource://gre/modules/XPCOMUtils.sys.mjs";
const lazy = {};
ChromeUtils.defineESModuleGetters(lazy, {
BrowserUtils: "resource://gre/modules/BrowserUtils.sys.mjs",
E10SUtils: "resource://gre/modules/E10SUtils.sys.mjs",
});
export class MiddleMousePasteHandlerChild extends JSWindowActorChild {
handleEvent(clickEvent) {
if (
clickEvent.defaultPrevented ||
clickEvent.button != 1 ||
MiddleMousePasteHandlerChild.autoscrollEnabled
) {
return;
}
this.manager
.getActor("ClickHandler")
.handleClickEvent(
clickEvent,
/* is from middle mouse paste handler */ true
);
}
onProcessedClick(data) {
this.sendAsyncMessage("MiddleClickPaste", data);
}
}
XPCOMUtils.defineLazyPreferenceGetter(
MiddleMousePasteHandlerChild,
"autoscrollEnabled",
"general.autoScroll",
true
);
export class ClickHandlerChild extends JSWindowActorChild {
handleEvent(wrapperEvent) {
this.handleClickEvent(wrapperEvent.sourceEvent);
}
handleClickEvent(event, isFromMiddleMousePasteHandler = false) {
if (event.defaultPrevented || event.button == 2) {
return;
}
// Don't do anything on editable things, we shouldn't open links in
// contenteditables, and editor needs to possibly handle middlemouse paste
let composedTarget = event.composedTarget;
if (
composedTarget.isContentEditable ||
(composedTarget.ownerDocument &&
composedTarget.ownerDocument.designMode == "on") ||
ChromeUtils.getClassName(composedTarget) == "HTMLInputElement" ||
ChromeUtils.getClassName(composedTarget) == "HTMLTextAreaElement"
) {
return;
}
let originalTarget = event.originalTarget;
let ownerDoc = originalTarget.ownerDocument;
if (!ownerDoc) {
return;
}
// Handle click events from about pages
if (event.button == 0) {
if (ownerDoc.documentURI.startsWith("about:blocked")) {
return;
}
}
// For untrusted events, require a valid transient user gesture activation.
if (!event.isTrusted && !ownerDoc.hasValidTransientUserGestureActivation) {
return;
}
let [href, node, principal] =
lazy.BrowserUtils.hrefAndLinkNodeForClickEvent(event);
let csp = ownerDoc.csp;
if (csp) {
csp = lazy.E10SUtils.serializeCSP(csp);
}
let referrerInfo = Cc["@mozilla.org/referrer-info;1"].createInstance(
Ci.nsIReferrerInfo
);
if (node) {
referrerInfo.initWithElement(node);
} else {
referrerInfo.initWithDocument(ownerDoc);
}
referrerInfo = lazy.E10SUtils.serializeReferrerInfo(referrerInfo);
let json = {
button: event.button,
shiftKey: event.shiftKey,
ctrlKey: event.ctrlKey,
metaKey: event.metaKey,
altKey: event.altKey,
href: null,
title: null,
csp,
referrerInfo,
};
if (href && !isFromMiddleMousePasteHandler) {
try {
Services.scriptSecurityManager.checkLoadURIStrWithPrincipal(
principal,
href
);
} catch (e) {
return;
}
if (
!event.isTrusted &&
lazy.BrowserUtils.whereToOpenLink(event) != "current"
) {
// If we'll open the link, we want to consume the user gesture
// activation to ensure that we don't allow multiple links to open
// from one user gesture.
// Avoid doing so for links opened in the current tab, which get
// handled later, by gecko, as otherwise its popup blocker will stop
// the link from opening.
// We will do the same check (whereToOpenLink) again in the parent and
// avoid handling the click for such links... but we still need the
// click information in the parent because otherwise places link
// tracking breaks. (bug 1742894 tracks improving this.)
ownerDoc.consumeTransientUserGestureActivation();
// We don't care about the return value because we already checked that
// hasValidTransientUserGestureActivation was true earlier in this
// function.
}
json.href = href;
if (node) {
json.title = node.getAttribute("title");
}
if (
(ownerDoc.URL === "about:newtab" || ownerDoc.URL === "about:home") &&
node.dataset.isSponsoredLink === "true"
) {
json.globalHistoryOptions = { triggeringSponsoredURL: href };
}
// If a link element is clicked with middle button, user wants to open
// the link somewhere rather than pasting clipboard content. Therefore,
// when it's clicked with middle button, we should prevent multiple
// actions here to avoid leaking clipboard content unexpectedly.
// Note that whether the link will work actually or not does not matter
// because in this case, user does not intent to paste clipboard content.
// We also need to do this to prevent multiple tabs opening if there are
// nested link elements.
event.preventMultipleActions();
this.sendAsyncMessage("Content:Click", json);
}
// This might be middle mouse navigation, in which case pass this back:
if (!href && event.button == 1 && isFromMiddleMousePasteHandler) {
this.manager.getActor("MiddleMousePasteHandler").onProcessedClick(json);
}
}
}
|
