/* -*- 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"

interface nsIConsoleListener;
interface nsIConsoleMessage;

[scriptable, builtinclass, uuid(0eb81d20-c37e-42d4-82a8-ca9ae96bdf52)]
interface nsIConsoleService : nsISupports
{
    void logMessage(in nsIConsoleMessage message);

    // This helper function executes `function` and redirects any exception
    // that may be thrown while running it to the DevTools Console currently
    // debugging `targetGlobal`.
    //
    // This helps flag the nsIScriptError with a particular innerWindowID
    // which is especially useful for WebExtension content scripts
    // where script are running in a Sandbox whose prototype is the content window.
    // We expect content script exception to be flaged with the content window
    // innerWindowID in order to appear in the tab's DevTools.
    [implicit_jscontext]
    jsval callFunctionAndLogException(in jsval targetGlobal, in jsval function);

    // This is a variant of LogMessage which allows the caller to determine
    // if the message should be output to an OS-specific log. This is used on
    // B2G to control whether the message is logged to the android log or not.
    cenum OutputMode : 8 {
        SuppressLog = 0,
        OutputToLog
    };
    void logMessageWithMode(in nsIConsoleMessage message,
                            in nsIConsoleService_OutputMode mode);

    /**
     * Convenience method for logging simple messages.
     */
    void logStringMessage(in wstring message);

    /**
     * Get an array of all the messages logged so far.
     */
    Array<nsIConsoleMessage> getMessageArray();

    /**
     * To guard against stack overflows from listeners that could log
     * messages (it's easy to do this inadvertently from listeners
     * implemented in JavaScript), we don't call any listeners when
     * another error is already being logged.
     */
    void registerListener(in nsIConsoleListener listener);

    /**
     * Each registered listener should also be unregistered.
     */
    void unregisterListener(in nsIConsoleListener listener);

    /**
     * Clear the message buffer (e.g. for privacy reasons).
     */
    void reset();

    /**
     * Clear the message buffer for a given window.
     */
    void resetWindow(in uint64_t windowInnerId);
};


%{ C++
#define NS_CONSOLESERVICE_CID \
{ 0x7e3ff85c, 0x1dd2, 0x11b2, { 0x8d, 0x4b, 0xeb, 0x45, 0x2c, 0xb0, 0xff, 0x40 }}

#define NS_CONSOLESERVICE_CONTRACTID "@mozilla.org/consoleservice;1"
%}
