fa85f91c7e
A reference to a document (and the act of saving it) can outlive the browser tab it was originally loaded in, and this needs to be reflected in IPC in order to avoid MsgRouteError crashes; see bug for more info. Note that we still need to pass the PBrowser when starting persistence, because that's the only handle the parent has on the top-level document; see comments in this patch for more info. Also makes TabChildBase::GetDocument public, because it's just a wrapper around WebNavigation() which is already public, to avoid code duplication.
91 lines
2.9 KiB
Plaintext
91 lines
2.9 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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include protocol PContent;
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include protocol PWebBrowserPersistResources;
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include protocol PWebBrowserPersistSerialize;
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include InputStreamParams;
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namespace mozilla {
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// nsIWebBrowserPersistDocument has attributes which can be read
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// synchronously. To avoid using sync IPC for them, the actor sends
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// this structure from the child to the parent before the parent actor
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// is exposed to XPCOM.
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struct WebBrowserPersistDocumentAttrs {
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bool isPrivate;
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nsCString documentURI;
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nsCString baseURI;
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nsCString contentType;
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nsCString characterSet;
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nsString title;
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nsString referrer;
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nsString contentDisposition;
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uint32_t cacheKey;
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uint32_t persistFlags;
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};
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// IPDL doesn't have tuples, so this gives the pair of strings from
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// nsIWebBrowserPersistURIMap::getURIMapping a name.
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struct WebBrowserPersistURIMapEntry {
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nsCString mapFrom;
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nsCString mapTo;
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};
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// nsIWebBrowserPersistURIMap is just copied over IPC as one of these,
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// not proxied, to simplify the protocol.
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struct WebBrowserPersistURIMap {
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WebBrowserPersistURIMapEntry[] mapURIs;
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nsCString targetBaseURI;
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};
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// This remotes nsIWebBrowserPersistDocument and its visitors. The
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// lifecycle is a little complicated: the initial document is
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// constructed parent->child, but subdocuments are constructed
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// child->parent and then passed back. Subdocuments aren't subactors,
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// because that would impose a lifetime relationship that doesn't
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// exist in the XPIDL; instead they're all managed by the enclosing
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// PContent.
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protocol PWebBrowserPersistDocument {
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manager PContent;
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manages PWebBrowserPersistResources;
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manages PWebBrowserPersistSerialize;
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parent:
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// The actor isn't exposed to XPCOM until after it gets one of these
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// two messages; see also the state transition rules. The message
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// is either a response to the constructor (if it was parent->child)
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// or sent after it (if it was child->parent).
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Attributes(WebBrowserPersistDocumentAttrs aAttrs,
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OptionalInputStreamParams postData,
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FileDescriptor[] postFiles);
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InitFailure(nsresult aStatus);
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child:
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SetPersistFlags(uint32_t aNewFlags);
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PWebBrowserPersistResources();
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PWebBrowserPersistSerialize(WebBrowserPersistURIMap aMap,
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nsCString aRequestedContentType,
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uint32_t aEncoderFlags,
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uint32_t aWrapColumn);
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__delete__();
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state START:
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recv Attributes goto MAIN;
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recv InitFailure goto FAILED;
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state MAIN:
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send SetPersistFlags goto MAIN;
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send PWebBrowserPersistResources goto MAIN;
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send PWebBrowserPersistSerialize goto MAIN;
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send __delete__;
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state FAILED:
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send __delete__;
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};
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} // namespace mozilla
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