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- /* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
- *
- * ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is the Mozilla browser.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications, Inc.
- * Portions created by the Initial Developer are Copyright (C) 1999
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Travis Bogard <travis@netscape.com>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
- #include "nsISupports.idl"
-
- interface nsIDocShellTreeOwner;
-
-
- /**
- * The nsIDocShellTreeItem supplies the methods that are required of any item
- * that wishes to be able to live within the docshell tree either as a middle
- * node or a leaf.
- */
-
- [scriptable, uuid(7d935d63-6d2a-4600-afb5-9a4f7d68b825)]
- interface nsIDocShellTreeItem : nsISupports
- {
- /*
- name of the DocShellTreeItem
- */
- attribute wstring name;
-
- /**
- * Compares the provided name against the item's name and
- * returns the appropriate result.
- *
- * @return <CODE>PR_TRUE</CODE> if names match;
- * <CODE>PR_FALSE</CODE> otherwise.
- */
- boolean nameEquals(in wstring name);
-
- /*
- Definitions for the item types.
- */
- const long typeChrome=0; // typeChrome must equal 0
- const long typeContent=1; // typeContent must equal 1
- const long typeContentWrapper=2; // typeContentWrapper must equal 2
- const long typeChromeWrapper=3; // typeChromeWrapper must equal 3
-
- const long typeAll=0x7FFFFFFF;
-
- /*
- The type this item is.
- */
- attribute long itemType;
-
- /*
- Parent DocShell.
- */
- readonly attribute nsIDocShellTreeItem parent;
-
- /*
- This is call returns the same thing parent does however if the parent is
- of a different itemType, it will instead return nsnull. This call is a
- convience function for those wishing to not cross the boundaries at which
- item types change.
- */
- readonly attribute nsIDocShellTreeItem sameTypeParent;
-
- /*
- Returns the root DocShellTreeItem. This is a convience equivalent to
- getting the parent and its parent until there isn't a parent.
- */
- readonly attribute nsIDocShellTreeItem rootTreeItem;
-
- /*
- Returns the root DocShellTreeItem of the same type. This is a convience
- equivalent to getting the parent of the same type and its parent until
- there isn't a parent.
- */
- readonly attribute nsIDocShellTreeItem sameTypeRootTreeItem;
-
- /*
- Returns the docShellTreeItem with the specified name. Search order is as
- follows...
- 1.) Check name of self, if it matches return it.
- 2.) For each immediate child.
- a.) Check name of child and if it matches return it.
- b.) Ask the child to perform the check
- i.) Do not ask a child if it is the aRequestor
- ii.) Do not ask a child if it is of a different item type.
- 3.) If there is a parent of the same item type ask parent to perform the check
- a.) Do not ask parent if it is the aRequestor
- 4.) If there is a tree owner ask the tree owner to perform the check
- a.) Do not ask the tree owner if it is the aRequestor
- b.) This should only be done if there is no parent of the same type.
-
- Return the child DocShellTreeItem with the specified name.
- name - This is the name of the item that is trying to be found.
- aRequestor - This is the object that is requesting the find. This
- parameter is used to identify when the child is asking its parent to find
- a child with the specific name. The parent uses this parameter to ensure
- a resursive state does not occur by not again asking the requestor to find
- a shell by the specified name. Inversely the child uses it to ensure it
- does not ask its parent to do the search if its parent is the one that
- asked it to search. Children also use this to test against the treeOwner;
- aOriginalRequestor - The original treeitem that made the request, if any.
- This is used to ensure that we don't run into cross-site issues.
- */
- nsIDocShellTreeItem findItemWithName(in wstring name,
- in nsISupports aRequestor,
- in nsIDocShellTreeItem aOriginalRequestor);
-
- /*
- The owner of the DocShell Tree. This interface will be called upon when
- the docshell has things it needs to tell to the owner of the docshell.
- Note that docShell tree ownership does not cross tree types. Meaning
- setting ownership on a chrome tree does not set ownership on the content
- sub-trees. A given tree's boundaries are identified by the type changes.
- Trees of different types may be connected, but should not be traversed
- for things such as ownership.
-
- Note implementers of this interface should NOT effect the lifetime of the
- parent DocShell by holding this reference as it creates a cycle. Owners
- when releasing this interface should set the treeOwner to nsnull.
- Implementers of this interface are guaranteed that when treeOwner is
- set that the poitner is valid without having to addref.
-
- Further note however when others try to get the interface it should be
- addref'd before handing it to them.
- */
- readonly attribute nsIDocShellTreeOwner treeOwner;
- [noscript] void setTreeOwner(in nsIDocShellTreeOwner treeOwner);
-
- /* The offset of yourself in your parent's child list */
- attribute long childOffset;
- };
-
-