Source/WebInspectorUI/UserInterface/Views/ProfileNodeTreeElement.js

/*
 * Copyright (C) 2014-2105 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.
 *
 * 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.ProfileNodeTreeElement = class ProfileNodeTreeElement extends WI.GeneralTreeElement
{
    constructor(profileNode, delegate)
    {
        console.assert(profileNode);

        var title = profileNode.functionName;
        var subtitle = "";

        if (!title) {
            switch (profileNode.type) {
            case WI.ProfileNode.Type.Function:
                title = WI.UIString("(anonymous function)");
                break;
            case WI.ProfileNode.Type.Program:
                title = WI.UIString("(program)");
                break;
            default:
                title = WI.UIString("(anonymous function)");
                console.error("Unknown ProfileNode type: " + profileNode.type);
            }
        }

        var sourceCodeLocation = profileNode.sourceCodeLocation;
        if (sourceCodeLocation) {
            subtitle = document.createElement("span");
            sourceCodeLocation.populateLiveDisplayLocationString(subtitle, "textContent");
        }

        var className;

        switch (profileNode.type) {
        case WI.ProfileNode.Type.Function:
            className = WI.CallFrameView.FunctionIconStyleClassName;
            if (!sourceCodeLocation)
                className = WI.CallFrameView.NativeIconStyleClassName;
            break;
        case WI.ProfileNode.Type.Program:
            className = WI.TimelineRecordTreeElement.EvaluatedRecordIconStyleClass;
            break;
        }

        console.assert(className);

        // This is more than likely an event listener function with an "on" prefix and it is
        // as long or longer than the shortest event listener name -- "oncut".
        if (profileNode.functionName && profileNode.functionName.startsWith("on") && profileNode.functionName.length >= 5)
            className = WI.CallFrameView.EventListenerIconStyleClassName;

        super([className], title, subtitle, profileNode, {hasChildren: !!profileNode.childNodes.length});

        this._profileNode = profileNode;
        this._delegate = delegate || null;

        this.shouldRefreshChildren = true;

        if (sourceCodeLocation)
            this.tooltipHandledSeparately = true;
    }

    // Public

    get profileNode()
    {
        return this._profileNode;
    }

    get filterableData()
    {
        var url = this._profileNode.sourceCodeLocation ? this._profileNode.sourceCodeLocation.sourceCode.url : "";
        return {text: [this.mainTitle, url || ""]};
    }

    // Protected

    onattach()
    {
        super.onattach();

        console.assert(this.element);

        if (!this.tooltipHandledSeparately)
            return;

        var tooltipPrefix = this.mainTitle + "\n";
        this._profileNode.sourceCodeLocation.populateLiveDisplayLocationTooltip(this.element, tooltipPrefix);
    }

    onpopulate()
    {
        if (!this.hasChildren || !this.shouldRefreshChildren)
            return;

        this.shouldRefreshChildren = false;

        this.removeChildren();

        if (this._delegate && typeof this._delegate.populateProfileNodeTreeElement === "function") {
            this._delegate.populateProfileNodeTreeElement(this);
            return;
        }

        for (var childProfileNode of this._profileNode.childNodes) {
            var childTreeElement = new WI.ProfileNodeTreeElement(childProfileNode);
            this.appendChild(childTreeElement);
        }
    }
};