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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
|
/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/.
*/
interface LoadContext;
interface RemoteTab;
interface URI;
interface nsIDocShell;
interface nsIPrintSettings;
interface nsIWebBrowserPersistDocumentReceiver;
interface nsIWebProgressListener;
[ChromeOnly,
Exposed=Window]
interface FrameLoader {
/**
* Get the docshell from the frame loader.
*/
[GetterThrows]
readonly attribute nsIDocShell? docShell;
/**
* Get this frame loader's RemoteTab, if it has a remote frame. Otherwise,
* returns null.
*/
readonly attribute RemoteTab? remoteTab;
/**
* Get an nsILoadContext for the top-level docshell. For remote
* frames, a shim is returned that contains private browsing and app
* information.
*/
readonly attribute LoadContext? loadContext;
/**
* Get the root BrowsingContext within the frame.
* This may be null immediately after creating a remote frame.
*/
readonly attribute BrowsingContext? browsingContext;
/**
* Find out whether the loader's frame is at too great a depth in
* the frame tree. This can be used to decide what operations may
* or may not be allowed on the loader's docshell.
*/
[Pure]
readonly attribute boolean depthTooGreat;
/**
* Find out whether the loader's frame is a remote frame.
*/
readonly attribute boolean isRemoteFrame;
// Note, when frameloaders are swapped, also messageManagers are swapped.
readonly attribute MessageSender? messageManager;
/**
* Force a remote browser to recompute its dimension and screen position.
*/
[Throws]
undefined requestUpdatePosition();
/**
* Force a TabStateFlush from native sessionStoreListeners.
* Returns a promise that resolves when all session store data has been
* flushed.
*/
[NewObject]
Promise<undefined> requestTabStateFlush();
/**
* Force Epoch update in native sessionStoreListeners.
*/
undefined requestEpochUpdate(unsigned long aEpoch);
/**
* Request a session history update in native sessionStoreListeners.
*/
undefined requestSHistoryUpdate();
/**
* Creates a print preview document in this frame, or updates the existing
* print preview document with new print settings.
*
* @param aPrintSettings The print settings to use to layout the print
* preview document.
* @param aSourceBrowsingContext Optionally, the browsing context that
* contains the document from which the print preview is to be generated,
* which must be in the same process as the browsing context of the frame
* loader itself.
*
* This should only be passed on the first call. It should not be passed
* for any subsequent calls that are made to update the existing print
* preview document with a new print settings object.
* @return A Promise that resolves with a PrintPreviewSuccessInfo on success.
*/
[NewObject]
Promise<unsigned long> printPreview(nsIPrintSettings aPrintSettings,
BrowsingContext? aSourceBrowsingContext);
/**
* Inform the print preview document that we're done with it.
*/
undefined exitPrintPreview();
/**
* The element which owns this frame loader.
*
* For example, if this is a frame loader for an <iframe>, this attribute
* returns the iframe element.
*/
[Pure]
readonly attribute Element? ownerElement;
/**
* Cached childID of the ContentParent owning the RemoteTab in this frame
* loader. This can be used to obtain the childID after the RemoteTab died.
*/
[Pure]
readonly attribute unsigned long long childID;
/**
* Find out whether the owner content really is a mozbrowser. <xul:browser>
* is not considered to be a mozbrowser frame.
*/
[Pure]
readonly attribute boolean ownerIsMozBrowserFrame;
/**
* The last known width of the frame. Reading this property will not trigger
* a reflow, and therefore may not reflect the current state of things. It
* should only be used in asynchronous APIs where values are not guaranteed
* to be up-to-date when received.
*/
[Pure]
readonly attribute unsigned long lazyWidth;
/**
* The last known height of the frame. Reading this property will not trigger
* a reflow, and therefore may not reflect the current state of things. It
* should only be used in asynchronous APIs where values are not guaranteed
* to be up-to-date when received.
*/
[Pure]
readonly attribute unsigned long lazyHeight;
/**
* Is `true` if the frameloader is dead (destroy has been called on it)
*/
[Pure]
readonly attribute boolean isDead;
};
/**
* Interface for objects which represent a document that can be
* serialized with nsIWebBrowserPersist. This interface is
* asynchronous because the actual document can be in another process
* (e.g., if this object is a FrameLoader for an out-of-process
* frame).
*
* @see nsIWebBrowserPersistDocumentReceiver
* @see nsIWebBrowserPersistDocument
* @see nsIWebBrowserPersist
*
* @param aContext
* The browsing context of the subframe we'd like to persist.
* If set to nullptr, WebBrowserPersistable will attempt to persist
* the top-level document. If the browsing context is for a subframe
* that is not held beneath the WebBrowserPersistable, aRecv's onError
* method will be called with NS_ERROR_NO_CONTENT.
* @param aRecv
* The nsIWebBrowserPersistDocumentReceiver is a callback that
* will be fired once the document is ready for persisting.
*/
interface mixin WebBrowserPersistable
{
[Throws]
undefined startPersistence(BrowsingContext? aContext,
nsIWebBrowserPersistDocumentReceiver aRecv);
};
enum PrintPreviewOrientation {
"landscape",
"portrait",
"unspecified"
};
/**
* Interface for the object that's used to resolve the Promise returned from
* FrameLoader.printPreview() if that method successfully creates the print
* preview document/successfully updates it with new settings.
*/
[GenerateConversionToJS]
dictionary PrintPreviewSuccessInfo {
/**
* The total number of sheets of paper required to print, taking into account
* the provided nsIPrintSettings. This takes into account page range
* selection, the pages-per-sheet, whether duplex printing is enabled, etc.
*/
unsigned long sheetCount = 0;
/**
* The total number of virtual pages, not taking into account page range
* selection, the pages-per-sheet, whether duplex printing is enabled, etc.
*/
unsigned long totalPageCount = 0;
/**
* Whether the preview is empty because of page range selection.
*/
boolean isEmpty = false;
/**
* Whether the document or any subdocument has a selection that can be
* printed.
*/
boolean hasSelection = false;
/**
* Whether the previewed document has a selection itself.
*/
boolean hasSelfSelection = false;
/**
* Specified orientation of the document, or "unspecified".
*/
PrintPreviewOrientation orientation = "unspecified";
/**
* Specified page width of the document in inches, or null if no @page size was specified.
*/
float? pageWidth = null;
/**
* Specified page height of the document in inches, or null if no @page size was specified.
*/
float? pageHeight = null;
};
FrameLoader includes WebBrowserPersistable;
|
