/*
 * Copyright (C) 2014 Apple Inc. All rights reserved.
 * Copyright (C) 2014 Saam Barati <saambarati1@gmail.com>
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */

WI.Annotator = class Annotator extends WI.Object
{
    constructor(sourceCodeTextEditor)
    {
        super();

        console.assert(sourceCodeTextEditor instanceof WI.SourceCodeTextEditor, sourceCodeTextEditor);

        this._sourceCodeTextEditor = sourceCodeTextEditor;
        this._timeoutIdentifier = null;
        this._isActive = false;
    }

    // Public

    get sourceCodeTextEditor()
    {
        return this._sourceCodeTextEditor;
    }

    isActive()
    {
        return this._isActive;
    }

    pause()
    {
        this._clearTimeoutIfNeeded();
        this._isActive = false;
    }

    resume()
    {
        this._clearTimeoutIfNeeded();
        this._isActive = true;
        this.insertAnnotations();
    }

    refresh()
    {
        console.assert(this._isActive);
        if (!this._isActive)
            return;

        this._clearTimeoutIfNeeded();
        this.insertAnnotations();
    }

    reset()
    {
        this._clearTimeoutIfNeeded();
        this._isActive = true;
        this.clearAnnotations();
        this.insertAnnotations();
    }

    clear()
    {
        this.pause();
        this.clearAnnotations();
    }

    // Protected

    insertAnnotations()
    {
        // Implemented by subclasses.
    }

    clearAnnotations()
    {
        // Implemented by subclasses.
    }

    // Private

    _clearTimeoutIfNeeded()
    {
        if (this._timeoutIdentifier) {
            clearTimeout(this._timeoutIdentifier);
            this._timeoutIdentifier = null;
        }
    }
};