191 lines
7.9 KiB
Plaintext
191 lines
7.9 KiB
Plaintext
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications, Inc.
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* Portions created by the Initial Developer are Copyright (C) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/**
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* nsIWindowWatcher is the keeper of Gecko/DOM Windows. It maintains
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* a list of open top-level windows, and allows some operations on them.
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* Usage notes:
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* This component has an |activeWindow| property. Clients may expect
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* this property to be always current, so to properly integrate this component
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* the application will need to keep it current by setting the property
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* as the active window changes.
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* This component should not keep a (XPCOM) reference to any windows;
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* the implementation will claim no ownership. Windows must notify
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* this component when they are created or destroyed, so only a weak
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* reference is kept. Note that there is no interface for such notifications
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* (not a public one, anyway). This is taken care of both in Mozilla and
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* by common embedding code. Embedding clients need do nothing special
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* about that requirement.
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* This component must be initialized at application startup by calling
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* setWindowCreator.
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*
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* @status FROZEN
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*/
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#include "nsISupports.idl"
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interface nsIDOMWindow;
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interface nsIObserver;
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interface nsIPrompt;
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interface nsIAuthPrompt;
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interface nsISimpleEnumerator;
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interface nsIWebBrowserChrome;
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interface nsIWindowCreator;
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[scriptable, uuid(002286a8-494b-43b3-8ddd-49e3fc50622b)]
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interface nsIWindowWatcher : nsISupports {
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/** Create a new window. It will automatically be added to our list
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(via addWindow()).
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@param aParent parent window, if any. Null if no parent. If it is
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impossible to get to an nsIWebBrowserChrome from aParent, this
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method will effectively act as if aParent were null.
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@param aURL url to which to open the new window. Must already be
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escaped, if applicable. can be null.
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@param aName window name from JS window.open. can be null.
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@param aFeatures window features from JS window.open. can be null.
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@param aArguments extra argument(s) to the new window, to be attached
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as the |arguments| property. An nsISupportsArray will be
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unwound into multiple arguments (but not recursively!).
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can be null.
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@return the new window
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*/
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nsIDOMWindow openWindow(in nsIDOMWindow aParent, in string aUrl,
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in string aName, in string aFeatures,
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in nsISupports aArguments);
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/** Clients of this service can register themselves to be notified
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when a window is opened or closed (added to or removed from this
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service). This method adds an aObserver to the list of objects
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to be notified.
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@param aObserver the object to be notified when windows are
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opened or closed. Its Observe method will be
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called with the following parameters:
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aObserver::Observe interprets its parameters so:
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aSubject the window being opened or closed, sent as an nsISupports
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which can be QIed to an nsIDOMWindow.
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aTopic a wstring, either "domwindowopened" or "domwindowclosed".
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someData not used.
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*/
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void registerNotification(in nsIObserver aObserver);
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/** Clients of this service can register themselves to be notified
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when a window is opened or closed (added to or removed from this
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service). This method removes an aObserver from the list of objects
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to be notified.
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@param aObserver the observer to be removed.
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*/
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void unregisterNotification(in nsIObserver aObserver);
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/** Get an iterator for currently open windows in the order they were opened,
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guaranteeing that each will be visited exactly once.
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@return an enumerator which will itself return nsISupports objects which
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can be QIed to an nsIDOMWindow
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*/
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nsISimpleEnumerator getWindowEnumerator();
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/** Return a newly created nsIPrompt implementation.
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@param aParent the parent window used for posing alerts. can be null.
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@return a new nsIPrompt object
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*/
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nsIPrompt getNewPrompter(in nsIDOMWindow aParent);
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/** Return a newly created nsIAuthPrompt implementation.
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@param aParent the parent window used for posing alerts. can be null.
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@return a new nsIAuthPrompt object
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*/
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nsIAuthPrompt getNewAuthPrompter(in nsIDOMWindow aParent);
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/** Set the window creator callback. It must be filled in by the app.
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openWindow will use it to create new windows.
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@param creator the callback. if null, the callback will be cleared
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and window creation capabilities lost.
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*/
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void setWindowCreator(in nsIWindowCreator creator);
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/** Retrieve the chrome window mapped to the given DOM window. Window
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Watcher keeps a list of all top-level DOM windows currently open,
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along with their corresponding chrome interfaces. Since DOM Windows
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lack a (public) means of retrieving their corresponding chrome,
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this method will do that.
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@param aWindow the DOM window whose chrome window the caller needs
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@return the corresponding chrome window
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*/
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nsIWebBrowserChrome getChromeForWindow(in nsIDOMWindow aWindow);
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/**
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Retrieve an existing window (or frame).
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@param aTargetName the window name
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@param aCurrentWindow a starting point in the window hierarchy to
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begin the search. If null, each toplevel window
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will be searched.
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Note: This method will search all open windows for any window or
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frame with the given window name. Make sure you understand the
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security implications of this before using this method!
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*/
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nsIDOMWindow getWindowByName(in wstring aTargetName,
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in nsIDOMWindow aCurrentWindow);
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/** The Watcher serves as a global storage facility for the current active
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(frontmost non-floating-palette-type) window, storing and returning
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it on demand. Users must keep this attribute current, including after
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the topmost window is closed. This attribute obviously can return null
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if no windows are open, but should otherwise always return a valid
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window.
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*/
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attribute nsIDOMWindow activeWindow;
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};
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%{C++
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// {002286a8-494b-43b3-8ddd-49e3fc50622b}
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#define NS_WINDOWWATCHER_IID \
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{0x002286a8, 0x494b, 0x43b3, {0x8d, 0xdd, 0x49, 0xe3, 0xfc, 0x50, 0x62, 0x2b}}
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#define NS_WINDOWWATCHER_CONTRACTID "@mozilla.org/embedcomp/window-watcher;1"
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%}
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