react-native-devtools-frontend/front_end/sources/ScriptOriginPlugin.js

// Copyright 2018 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.

Sources.ScriptOriginPlugin = class extends Sources.UISourceCodeFrame.Plugin {
  /**
   * @param {!SourceFrame.SourcesTextEditor} textEditor
   * @param {!Workspace.UISourceCode} uiSourceCode
   */
  constructor(textEditor, uiSourceCode) {
    super();
    this._textEditor = textEditor;
    this._uiSourceCode = uiSourceCode;
  }

  /**
   * @override
   * @param {!Workspace.UISourceCode} uiSourceCode
   * @return {boolean}
   */
  static accepts(uiSourceCode) {
    return !!Sources.ScriptOriginPlugin._script(uiSourceCode);
  }

  /**
   * @override
   * @return {!Array<!UI.ToolbarItem>}
   */
  rightToolbarItems() {
    const script = Sources.ScriptOriginPlugin._script(this._uiSourceCode);
    if (!script || !script.originStackTrace)
      return [];
    const link = Sources.ScriptOriginPlugin._linkifier.linkifyStackTraceTopFrame(
        script.debuggerModel.target(), script.originStackTrace);
    return [new UI.ToolbarItem(link)];
  }

  /**
   * @param {!Workspace.UISourceCode} uiSourceCode
   * @return {?SDK.Script}
   */
  static _script(uiSourceCode) {
    const locations = Bindings.debuggerWorkspaceBinding.uiLocationToRawLocations(uiSourceCode, 0, 0);
    for (const location of locations) {
      const script = location.script();
      if (script.originStackTrace)
        return script;
    }
    return null;
  }
};

Sources.ScriptOriginPlugin._linkifier = new Components.Linkifier();