зеркало из https://github.com/mozilla/gecko-dev.git
130 строки
5.0 KiB
Plaintext
130 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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* 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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#include "nsIDocShellTreeNode.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(e35bbb39-985b-4d62-81da-73c330222e5f)]
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interface nsIDocShellTreeItem : nsIDocShellTreeNode
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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 AString name;
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/**
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* Compares the provided name against the item's name and
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* returns the appropriate result.
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*
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* @return <CODE>PR_TRUE</CODE> if names match;
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* <CODE>PR_FALSE</CODE> otherwise.
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*/
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boolean nameEquals(in 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; // typeChrome must equal 0
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const long typeContent=1; // typeContent must equal 1
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const long typeContentWrapper=2; // typeContentWrapper must equal 2
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const long typeChromeWrapper=3; // typeChromeWrapper must equal 3
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const long typeAll=0x7FFFFFFF;
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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.
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*/
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readonly attribute nsIDocShellTreeItem parent;
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/*
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This getter returns the same thing parent does however if the parent
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is of a different itemType, or if the parent is an <iframe mozbrowser>
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or <iframe mozapp>, it will instead return nullptr. This call is a
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convience function for those wishing to not cross the boundaries at
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which 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 its 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 its 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 its 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 its parent to do the search if its 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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aOriginalRequestor - The original treeitem that made the request, if any.
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This is used to ensure that we don't run into cross-site issues.
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*/
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nsIDocShellTreeItem findItemWithName(in wstring name,
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in nsISupports aRequestor,
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in nsIDocShellTreeItem aOriginalRequestor);
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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 nullptr.
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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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readonly attribute nsIDocShellTreeOwner treeOwner;
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[noscript] void setTreeOwner(in nsIDocShellTreeOwner treeOwner);
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};
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