The Tor Browser: layout/xul/tree/nsTreeContentView.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

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

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #ifndef nsTreeContentView_h__

     7 #define nsTreeContentView_h__

     9 #include "nsAutoPtr.h"

    10 #include "nsCycleCollectionParticipant.h"

    11 #include "nsTArray.h"

    12 #include "nsStubDocumentObserver.h"

    13 #include "nsITreeBoxObject.h"

    14 #include "nsITreeColumns.h"

    15 #include "nsITreeView.h"

    16 #include "nsITreeContentView.h"

    17 #include "nsITreeSelection.h"

    18 #include "mozilla/Attributes.h"

    20 class nsIDocument;

    21 class Row;

    23 nsresult NS_NewTreeContentView(nsITreeView** aResult);

    25 class nsTreeContentView MOZ_FINAL : public nsINativeTreeView,

    26                                     public nsITreeContentView,

    27                                     public nsStubDocumentObserver

    28 {

    29   public:

    30     nsTreeContentView(void);

    32     ~nsTreeContentView(void);

    34     NS_DECL_CYCLE_COLLECTING_ISUPPORTS

    35     NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsTreeContentView,

    36                                              nsINativeTreeView)

    38     NS_DECL_NSITREEVIEW

    39     // nsINativeTreeView: Untrusted code can use us

    40     NS_IMETHOD EnsureNative() MOZ_OVERRIDE { return NS_OK; }

    42     NS_DECL_NSITREECONTENTVIEW

    44     // nsIDocumentObserver

    45     NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED

    46     NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED

    47     NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED

    48     NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED

    49     NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED

    51     static bool CanTrustTreeSelection(nsISupports* aValue);

    53   protected:

    54     // Recursive methods which deal with serializing of nested content.

    55     void Serialize(nsIContent* aContent, int32_t aParentIndex, int32_t* aIndex,

    56                    nsTArray<nsAutoPtr<Row> >& aRows);

    58     void SerializeItem(nsIContent* aContent, int32_t aParentIndex,

    59                        int32_t* aIndex, nsTArray<nsAutoPtr<Row> >& aRows);

    61     void SerializeSeparator(nsIContent* aContent, int32_t aParentIndex,

    62                             int32_t* aIndex, nsTArray<nsAutoPtr<Row> >& aRows);

    64     void GetIndexInSubtree(nsIContent* aContainer, nsIContent* aContent, int32_t* aResult);

    66     // Helper methods which we use to manage our plain array of rows.

    67     int32_t EnsureSubtree(int32_t aIndex);

    69     int32_t RemoveSubtree(int32_t aIndex);

    71     int32_t InsertRow(int32_t aParentIndex, int32_t aIndex, nsIContent* aContent);

    73     void InsertRowFor(nsIContent* aParent, nsIContent* aChild);

    75     int32_t RemoveRow(int32_t aIndex);

    77     void ClearRows();

    79     void OpenContainer(int32_t aIndex);

    81     void CloseContainer(int32_t aIndex);

    83     int32_t FindContent(nsIContent* aContent);

    85     void UpdateSubtreeSizes(int32_t aIndex, int32_t aCount);

    87     void UpdateParentIndexes(int32_t aIndex, int32_t aSkip, int32_t aCount);

    89     // Content helpers.

    90     nsIContent* GetCell(nsIContent* aContainer, nsITreeColumn* aCol);

    92   private:

    93     nsCOMPtr<nsITreeBoxObject>          mBoxObject;

    94     nsCOMPtr<nsITreeSelection>          mSelection;

    95     nsCOMPtr<nsIContent>                mRoot;

    96     nsCOMPtr<nsIContent>                mBody;

    97     nsIDocument*                        mDocument;      // WEAK

    98     nsTArray<nsAutoPtr<Row> >           mRows;

    99 };

   101 #endif // nsTreeContentView_h__

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