107 lines
2.9 KiB
C++
107 lines
2.9 KiB
C++
/* -*- Mode: C++; 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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#ifndef nsDocShellEnumerator_h___
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#define nsDocShellEnumerator_h___
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#include "nsISimpleEnumerator.h"
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#include "nsTArray.h"
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#include "nsIWeakReferenceUtils.h"
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class nsIDocShellTreeItem;
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/*
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// {13cbc281-35ae-11d5-be5b-bde0edece43c}
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#define NS_DOCSHELL_FORWARDS_ENUMERATOR_CID \
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{ 0x13cbc281, 0x35ae, 0x11d5, { 0xbe, 0x5b, 0xbd, 0xe0, 0xed, 0xec, 0xe4, 0x3c } }
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#define NS_DOCSHELL_FORWARDS_ENUMERATOR_CONTRACTID \
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"@mozilla.org/docshell/enumerator-forwards;1"
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// {13cbc282-35ae-11d5-be5b-bde0edece43c}
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#define NS_DOCSHELL_BACKWARDS_ENUMERATOR_CID \
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{ 0x13cbc282, 0x35ae, 0x11d5, { 0xbe, 0x5b, 0xbd, 0xe0, 0xed, 0xec, 0xe4, 0x3c } }
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#define NS_DOCSHELL_BACKWARDS_ENUMERATOR_CONTRACTID \
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"@mozilla.org/docshell/enumerator-backwards;1"
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*/
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class nsDocShellEnumerator : public nsISimpleEnumerator
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{
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protected:
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enum
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{
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enumerateForwards,
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enumerateBackwards
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};
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virtual ~nsDocShellEnumerator();
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public:
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explicit nsDocShellEnumerator(int32_t aEnumerationDirection);
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// nsISupports
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NS_DECL_ISUPPORTS
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// nsISimpleEnumerator
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NS_DECL_NSISIMPLEENUMERATOR
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public:
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nsresult GetEnumerationRootItem(nsIDocShellTreeItem** aEnumerationRootItem);
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nsresult SetEnumerationRootItem(nsIDocShellTreeItem* aEnumerationRootItem);
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nsresult GetEnumDocShellType(int32_t* aEnumerationItemType);
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nsresult SetEnumDocShellType(int32_t aEnumerationItemType);
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nsresult First();
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protected:
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nsresult EnsureDocShellArray();
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nsresult ClearState();
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nsresult BuildDocShellArray(nsTArray<nsWeakPtr>& aItemArray);
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virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* aItem,
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nsTArray<nsWeakPtr>& aItemArray) = 0;
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protected:
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nsWeakPtr mRootItem; // weak ref!
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nsTArray<nsWeakPtr> mItemArray; // flattened list of items with matching type
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uint32_t mCurIndex;
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int32_t mDocShellType; // only want shells of this type
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bool mArrayValid; // is mItemArray up to date?
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const int8_t mEnumerationDirection;
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};
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class nsDocShellForwardsEnumerator : public nsDocShellEnumerator
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{
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public:
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nsDocShellForwardsEnumerator()
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: nsDocShellEnumerator(enumerateForwards)
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{
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}
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protected:
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virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* aItem,
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nsTArray<nsWeakPtr>& aItemArray);
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};
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class nsDocShellBackwardsEnumerator : public nsDocShellEnumerator
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{
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public:
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nsDocShellBackwardsEnumerator()
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: nsDocShellEnumerator(enumerateBackwards)
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{
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}
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protected:
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virtual nsresult BuildArrayRecursive(nsIDocShellTreeItem* aItem,
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nsTArray<nsWeakPtr>& aItemArray);
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};
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#endif // nsDocShellEnumerator_h___
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