Demo/bin/Debug/front_end/common/Throttler.js

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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

/**
 * @constructor
 * @param {number} timeout
 */
WebInspector.Throttler = function(timeout)
{
    this._timeout = timeout;
    this._isRunningProcess = false;
    this._asSoonAsPossible = false;
    /** @type {?function(!WebInspector.Throttler.FinishCallback)} */
    this._process = null;
}

WebInspector.Throttler.prototype = {
    /**
     * @param {!Error=} error
     */
    _processCompleted: function(error)
    {
        if (error) {
            console.error(error);
            alert("WebInspector.Throttler.prototype._processCompleted:"  + error);
        }
        this._isRunningProcess = false;
        if (this._process)
            this._innerSchedule(false);
        this._processCompletedForTests();
    },

    _processCompletedForTests: function()
    {
        // For sniffing in tests.
    },

    _onTimeout: function()
    {
        delete this._processTimeout;
        this._asSoonAsPossible = false;
        this._isRunningProcess = true;

        // Process might issue synchronous calls to this throttler.
        var process = this._process;
        this._process = null;
        try {
            process(this._processCompleted.bind(this));
        } catch (e) {
            // Process might have called completed() and threw exception later.
            if (this._isRunningProcess)
                this._processCompleted(e);
        }
    },

    /**
     * @param {function(!WebInspector.Throttler.FinishCallback)} process
     * @param {boolean=} asSoonAsPossible
     */
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