зеркало из https://github.com/mozilla/pjs.git
134 строки
5.0 KiB
Plaintext
134 строки
5.0 KiB
Plaintext
/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is the Mozilla browser.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications, Inc. Portions created by Netscape are
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* Copyright (C) 1999, Mozilla. All Rights Reserved.
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*
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* Contributor(s):
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* Travis Bogard <travis@netscape.com>
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*/
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#include "nsISupports.idl"
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interface nsIDocShellTreeOwner;
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/**
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* The nsIDocShellTreeItem supplies the methods that are required of any item
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* that wishes to be able to live within the docshell tree either as a middle
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* node or a leaf.
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*/
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[scriptable, uuid(B52AE780-A966-11d3-AFC7-00A024FFC08C)]
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interface nsIDocShellTreeItem : nsISupports
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{
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/*
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name of the DocShellTreeItem
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*/
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attribute wstring name;
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/*
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Definitions for the item types.
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*/
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const long typeChrome=0;
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const long typeContent=1;
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/*
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The type this item is.
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*/
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attribute long itemType;
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/*
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Parent DocShell.. Note Implementers of this interface should NOT effect
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the lifetime of the parent DocShellTreeItem by holding this reference as it
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creates a cycle. Parents when releasing this interface should set the
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parent to nsnull. Implementers of this interface are guaranteed that when
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parent is set that the pointer is valid without having to addref.
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Further note however when others try to Get the interface you should add
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ref it before handing it to them.
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*/
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attribute nsIDocShellTreeItem parent;
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/*
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This is call returns the same thing parent does however if the parent is
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of a different itemType, it will instead return nsnull. This call is a
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convience function for those wishing to not cross the boundaries at which
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item types change.
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*/
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readonly attribute nsIDocShellTreeItem sameTypeParent;
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/*
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Returns the root DocShellTreeItem. This is a convience equivalent to
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getting the parent and it's parent until there isn't a parent.
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*/
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readonly attribute nsIDocShellTreeItem rootTreeItem;
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/*
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Returns the root DocShellTreeItem of the same type. This is a convience
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equivalent to getting the parent of the same type and it's parent until
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there isn't a parent.
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*/
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readonly attribute nsIDocShellTreeItem sameTypeRootTreeItem;
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/*
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Returns the docShellTreeItem with the specified name. Search order is as
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follows...
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1.) Check name of self, if it matches return it.
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2.) For each immediate child.
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a.) Check name of child and if it matches return it.
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b.) Ask the child to perform the check
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i.) Do not ask a child if it is the aRequestor
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ii.) Do not ask a child if it is of a different item type.
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3.) If there is a parent of the same item type ask parent to perform the check
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a.) Do not ask parent if it is the aRequestor
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4.) If there is a tree owner ask the tree owner to perform the check
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a.) Do not ask the tree owner if it is the aRequestor
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b.) This should only be done if there is no parent of the same type.
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Return the child DocShellTreeItem with the specified name.
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name - This is the name of the item that is trying to be found.
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aRequestor - This is the object that is requesting the find. This
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parameter is used to identify when the child is asking it's parent to find
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a child with the specific name. The parent uses this parameter to ensure
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a resursive state does not occur by not again asking the requestor to find
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a shell by the specified name. Inversely the child uses it to ensure it
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does not ask it's parent to do the search if it's parent is the one that
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asked it to search. Children also use this to test against the treeOwner;
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*/
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nsIDocShellTreeItem findItemWithName(in wstring name, in nsISupports aRequestor);
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/*
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The owner of the DocShell Tree. This interface will be called upon when
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the docshell has things it needs to tell to the owner of the docshell.
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Note that docShell tree ownership does not cross tree types. Meaning
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setting ownership on a chrome tree does not set ownership on the content
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sub-trees. A given tree's boundaries are identified by the type changes.
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Trees of different types may be connected, but should not be traversed
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for things such as ownership.
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Note implementers of this interface should NOT effect the lifetime of the
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parent DocShell by holding this reference as it creates a cycle. Owners
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when releasing this interface should set the treeOwner to nsnull.
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Implementers of this interface are guaranteed that when treeOwner is
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set that the poitner is valid without having to addref.
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Further note however when others try to get the interface it should be
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addref'd before handing it to them.
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*/
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attribute nsIDocShellTreeOwner treeOwner;
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};
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