/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

#include "nsISupports.idl"

/* THIS IS A PUBLIC EMBEDDING API */

/**
 * The nsIEmbeddingSiteWindow is implemented by the embedder to provide
 * Gecko with the means to call up to the host to resize the window,
 * hide or show it and set/get its title.
 */
[scriptable, uuid(0b976267-4aaa-4f36-a2d4-27b5ca8d73bb)]
interface nsIEmbeddingSiteWindow : nsISupports
{
    /**
     * Flag indicates that position of the top left corner of the outer area
     * is required/specified.
     *
     * @see setDimensions
     * @see getDimensions
     */
    const unsigned long DIM_FLAGS_POSITION   = 1;
    
    /**
     * Flag indicates that the size of the inner area is required/specified.
     *
     * @note The inner and outer flags are mutually exclusive and it is
     *       invalid to combine them.
     *
     * @see setDimensions
     * @see getDimensions
     * @see DIM_FLAGS_SIZE_OUTER
     */
    const unsigned long DIM_FLAGS_SIZE_INNER = 2;

    /**
     * Flag indicates that the size of the outer area is required/specified.
     *
     * @see setDimensions
     * @see getDimensions
     * @see DIM_FLAGS_SIZE_INNER
     */
    const unsigned long DIM_FLAGS_SIZE_OUTER = 4;

    /**
     * Flag indicates that the x parameter should be ignored.
     *
     * @see setDimensions
     */
    const unsigned long DIM_FLAGS_IGNORE_X = 8;

    /**
     * Flag indicates that the y parameter should be ignored.
     *
     * @see setDimensions
     */
    const unsigned long DIM_FLAGS_IGNORE_Y = 16;

    /**
     * Flag indicates that the cx parameter should be ignored.
     *
     * @see setDimensions
     */
    const unsigned long DIM_FLAGS_IGNORE_CX = 32;

    /**
     * Flag indicates that the cy parameter should be ignored.
     *
     * @see setDimensions
     */
    const unsigned long DIM_FLAGS_IGNORE_CY = 64;


    /**
     * Sets the dimensions for the window; the position & size. The
     * flags to indicate what the caller wants to set and whether the size
     * refers to the inner or outer area. The inner area refers to just
     * the embedded area, wheras the outer area can also include any 
     * surrounding chrome, window frame, title bar, and so on.
     *
     * @param flags  Combination of position, inner and outer size flags.
     *               The ignore flags are telling the parent to use the
     *               current values for those dimensions and ignore the
     *               corresponding parameters the child sends.
     * @param x      Left hand corner of the outer area.
     * @param y      Top corner of the outer area.
     * @param cx     Width of the inner or outer area.
     * @param cy     Height of the inner or outer area.
     *
     * @return <code>NS_OK</code> if operation was performed correctly;
     *         <code>NS_ERROR_UNEXPECTED</code> if window could not be
     *           destroyed;
     *         <code>NS_ERROR_INVALID_ARG</code> for bad flag combination
     *           or illegal dimensions.
     *
     * @see getDimensions
     * @see DIM_FLAGS_POSITION
     * @see DIM_FLAGS_SIZE_OUTER
     * @see DIM_FLAGS_SIZE_INNER
     */
    void setDimensions(in unsigned long flags, in long x, in long y, in long cx, in long cy);

    /**
     * Gets the dimensions of the window. The caller may pass
     * <CODE>nullptr</CODE> for any value it is uninterested in receiving.
     *
     * @param flags  Combination of position, inner and outer size flag .
     * @param x      Left hand corner of the outer area; or <CODE>nullptr</CODE>.
     * @param y      Top corner of the outer area; or <CODE>nullptr</CODE>.
     * @param cx     Width of the inner or outer area; or <CODE>nullptr</CODE>.
     * @param cy     Height of the inner or outer area; or <CODE>nullptr</CODE>.
     *
     * @see setDimensions
     * @see DIM_FLAGS_POSITION
     * @see DIM_FLAGS_SIZE_OUTER
     * @see DIM_FLAGS_SIZE_INNER
     */
    void getDimensions(in unsigned long flags, out long x, out long y, out long cx, out long cy);

    /**
     * Give the window focus.
     */
    void setFocus();

    /**
     * Visibility of the window.
     */
    attribute boolean visibility;

    /**
     * Title of the window.
     */
    attribute AString title;

    /**
     * Native window for the site's window. The implementor should copy the
     * native window object into the address supplied by the caller. The
     * type of the native window that the address refers to is  platform
     * and OS specific as follows:
     *
     * <ul>
     *   <li>On Win32 it is an <CODE>HWND</CODE>.</li>
     *   <li>On MacOS this is a <CODE>WindowPtr</CODE>.</li>
     *   <li>On GTK this is a <CODE>GtkWidget*</CODE>.</li>
     * </ul>
     */
    [noscript] readonly attribute voidPtr siteWindow;
    
    /**
     * Blur the window. This should unfocus the window and send an onblur event.
     */
    void blur();
};
