Demo/bin/Debug/front_end/elements/MetricsSidebarPane.js

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/*
 * Copyright (C) 2007 Apple Inc.  All rights reserved.
 *
 * 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.
 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE 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 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.
 */

/**
 * @constructor
 * @extends {WebInspector.ElementsSidebarPane}
 */
WebInspector.MetricsSidebarPane = function()
{
    WebInspector.ElementsSidebarPane.call(this, WebInspector.UIString("Metrics"));
}

WebInspector.MetricsSidebarPane.prototype = {
    /**
     * @override
     * @param {!WebInspector.Throttler.FinishCallback} finishedCallback
     * @protected
     */
    doUpdate: function(finishedCallback)
    {
        // "style" attribute might have changed. Update metrics unless they are being edited
        // (if a CSS property is added, a StyleSheetChanged event is dispatched).
        if (this._isEditingMetrics) {
            finishedCallback();
            return;
        }

        // FIXME: avoid updates of a collapsed pane.
        var node = this.node();
        var cssModel = this.cssModel();
        if (!node || node.nodeType() !== Node.ELEMENT_NODE || !cssModel) {
            this.element.removeChildren();
            finishedCallback();
            return;
        }