forked from mirrors/gecko-dev
65c28aa0ad
In order to allow JS callers to use nsISimpleEnumerator instances with the JS iteration protocol, we'll need to additional methods to every instance. Since we currently have a large number of unrelated implementations, it would be best if they could share the same implementation for the JS portion of the protocol. This patch adds a stub nsSimpleEnumerator base class, and updates all existing implementations to inherit from it. A follow-up will add a new base interface to this class, and implement the additional functionality required for JS iteration. Differential Revision: https://phabricator.services.mozilla.com/D3725 --HG-- extra : rebase_source : ad66d7b266856d5a750c772e4710679fab9434b1 extra : histedit_source : a83ebffbf2f0b191ba7de9007f73def6b9a955b8
118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/* 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIEHistoryEnumerator.h"
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#include <urlhist.h>
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#include <shlguid.h>
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#include "nsArrayEnumerator.h"
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#include "nsCOMArray.h"
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#include "nsIURI.h"
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#include "nsIVariant.h"
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#include "nsNetUtil.h"
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#include "nsString.h"
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#include "nsWindowsMigrationUtils.h"
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#include "prtime.h"
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////////////////////////////////////////////////////////////////////////////////
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//// nsIEHistoryEnumerator
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nsIEHistoryEnumerator::nsIEHistoryEnumerator()
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{
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::CoInitialize(nullptr);
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}
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nsIEHistoryEnumerator::~nsIEHistoryEnumerator()
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{
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::CoUninitialize();
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}
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void
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nsIEHistoryEnumerator::EnsureInitialized()
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{
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if (mURLEnumerator)
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return;
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HRESULT hr = ::CoCreateInstance(CLSID_CUrlHistory,
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nullptr,
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CLSCTX_INPROC_SERVER,
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IID_IUrlHistoryStg2,
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getter_AddRefs(mIEHistory));
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if (FAILED(hr))
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return;
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hr = mIEHistory->EnumUrls(getter_AddRefs(mURLEnumerator));
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if (FAILED(hr))
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return;
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}
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NS_IMETHODIMP
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nsIEHistoryEnumerator::HasMoreElements(bool* _retval)
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{
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*_retval = false;
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EnsureInitialized();
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MOZ_ASSERT(mURLEnumerator, "Should have instanced an IE History URLEnumerator");
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if (!mURLEnumerator)
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return NS_OK;
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STATURL statURL;
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ULONG fetched;
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// First argument is not implemented, so doesn't matter what we pass.
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HRESULT hr = mURLEnumerator->Next(1, &statURL, &fetched);
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if (FAILED(hr) || fetched != 1UL) {
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// Reached the last entry.
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return NS_OK;
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}
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nsCOMPtr<nsIURI> uri;
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if (statURL.pwcsUrl) {
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nsDependentString url(statURL.pwcsUrl);
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nsresult rv = NS_NewURI(getter_AddRefs(uri), url);
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::CoTaskMemFree(statURL.pwcsUrl);
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if (NS_FAILED(rv)) {
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// Got a corrupt or invalid URI, continue to the next entry.
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return HasMoreElements(_retval);
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}
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}
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nsDependentString title(statURL.pwcsTitle ? statURL.pwcsTitle : L"");
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bool lastVisitTimeIsValid;
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PRTime lastVisited = WinMigrationFileTimeToPRTime(&(statURL.ftLastVisited), &lastVisitTimeIsValid);
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mCachedNextEntry = do_CreateInstance("@mozilla.org/hash-property-bag;1");
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MOZ_ASSERT(mCachedNextEntry, "Should have instanced a new property bag");
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if (mCachedNextEntry) {
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mCachedNextEntry->SetPropertyAsInterface(NS_LITERAL_STRING("uri"), uri);
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mCachedNextEntry->SetPropertyAsAString(NS_LITERAL_STRING("title"), title);
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if (lastVisitTimeIsValid) {
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mCachedNextEntry->SetPropertyAsInt64(NS_LITERAL_STRING("time"), lastVisited);
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}
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*_retval = true;
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}
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if (statURL.pwcsTitle)
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::CoTaskMemFree(statURL.pwcsTitle);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsIEHistoryEnumerator::GetNext(nsISupports** _retval)
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{
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*_retval = nullptr;
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if (!mCachedNextEntry)
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return NS_ERROR_FAILURE;
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NS_ADDREF(*_retval = mCachedNextEntry);
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// Release the cached entry, so it can't be returned twice.
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mCachedNextEntry = nullptr;
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return NS_OK;
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}
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