dom/webbrowserpersist/WebBrowserPersistDocumentParent.h
author Mike Shal <mshal@mozilla.com>
Thu, 24 Aug 2017 22:52:01 -0400
changeset 434519 cb773c661e0ca0bf297e977343076bef34411523
parent 394912 a4bcf2c7d2601da9ab58f3804afc54288c35b4fc
child 505383 6f3709b3878117466168c40affa7bca0b60cf75b
permissions -rw-r--r--
Bug 1402012 - Update buildconfig.py to use PartialConfigEnvironment; r=glandium By using the PartialConfigEnvironment, the clients of buildconfig will depend on config.statusd/ files instead of config.status directly. Clients can access substs and defines using buildconfig.substs['FOO'] or buildconfig.defines['BAR'], and then collect file-level dependencies for make using buildconfig.get_dependencies(). All GENERATED_FILES rules already make use of this because file_generate.py automatically includes these dependencies (along with all python modules loaded). As a result of this commit, re-running configure will no longer cause the world to be rebuilt. Although config.status is updated, no build steps use config.status directly and instead depend on values in config.statusd/, which are written with FileAvoidWrite. Since those files are not official targets according to the make backend, make won't try to continually rebuild the backend when those files are out of date. And since they are FileAvoidWrite, make will only re-run dependent steps if the actual configure value has changed. As a result of using JSON to load data from the config.statusd directory, substs can be unicode (instead of a bare string type). generate_certdata.py converts the subst manually to a string so the value can be exported to the environment without issue on Windows. Additionally, patching the buildconfig.substs dict no longer works, so the unit-symbolstore.py test was modified to patch the underlying buildconfig.substs._dict instead. The other files that needed to be modified make use of all the defines for the preprocessor. Those that are used during 'mach build' now use buildconfig.defines['ALLDEFINES'], which maps to a special FileAvoidWrite file generated for the PartialConfigEnvironment. MozReview-Commit-ID: 2pJ4s3TVeS8

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * 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/. */

#ifndef WebBrowserPersistDocumentParent_h__
#define WebBrowserPersistDocumentParent_h__

#include "mozilla/Maybe.h"
#include "mozilla/PWebBrowserPersistDocumentParent.h"
#include "nsCOMPtr.h"
#include "nsIWebBrowserPersistDocument.h"

// This class is the IPC half of the glue between the
// nsIWebBrowserPersistDocument interface and a remote document.  When
// (and if) it receives the Attributes message it constructs an
// WebBrowserPersistRemoteDocument and releases it into the XPCOM
// universe; otherwise, it invokes the document receiver's error
// callback.
//
// This object's lifetime is the normal IPC lifetime; on destruction,
// it calls its XPCOM reflection (if it exists yet) to remove that
// reference.  Normal deletion occurs when the XPCOM object is being
// destroyed or after an InitFailure is received and handled.
//
// See also: TabParent::StartPersistence.

namespace mozilla {

class WebBrowserPersistRemoteDocument;

class WebBrowserPersistDocumentParent final
    : public PWebBrowserPersistDocumentParent
{
public:
    WebBrowserPersistDocumentParent();
    virtual ~WebBrowserPersistDocumentParent();

    // Set a callback to be invoked when the actor leaves the START
    // state.  This method must be called exactly once while the actor
    // is still in the START state (or is unconstructed).
    void SetOnReady(nsIWebBrowserPersistDocumentReceiver* aOnReady);

    using Attrs = WebBrowserPersistDocumentAttrs;

    // IPDL methods:
    virtual mozilla::ipc::IPCResult
    RecvAttributes(const Attrs& aAttrs,
                   const OptionalIPCStream& aPostStream) override;
    virtual mozilla::ipc::IPCResult
    RecvInitFailure(const nsresult& aFailure) override;

    virtual PWebBrowserPersistResourcesParent*
    AllocPWebBrowserPersistResourcesParent() override;
    virtual bool
    DeallocPWebBrowserPersistResourcesParent(PWebBrowserPersistResourcesParent* aActor) override;

    virtual PWebBrowserPersistSerializeParent*
    AllocPWebBrowserPersistSerializeParent(
            const WebBrowserPersistURIMap& aMap,
            const nsCString& aRequestedContentType,
            const uint32_t& aEncoderFlags,
            const uint32_t& aWrapColumn) override;
    virtual bool
    DeallocPWebBrowserPersistSerializeParent(PWebBrowserPersistSerializeParent* aActor) override;

    virtual void
    ActorDestroy(ActorDestroyReason aWhy) override;
private:
    // This is reset to nullptr when the callback is invoked.
    nsCOMPtr<nsIWebBrowserPersistDocumentReceiver> mOnReady;
    WebBrowserPersistRemoteDocument* mReflection;
};

} // namespace mozilla

#endif // WebBrowserPersistDocumentParent_h__