File: scripting_api.h

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// Copyright 2020 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.

#ifndef CHROME_BROWSER_EXTENSIONS_API_SCRIPTING_SCRIPTING_API_H_
#define CHROME_BROWSER_EXTENSIONS_API_SCRIPTING_SCRIPTING_API_H_

#include <string>

#include "chrome/common/extensions/api/scripting.h"
#include "extensions/browser/extension_function.h"
#include "extensions/browser/script_executor.h"

namespace extensions {

class ScriptingExecuteScriptFunction : public ExtensionFunction {
 public:
  DECLARE_EXTENSION_FUNCTION("scripting.executeScript", SCRIPTING_EXECUTESCRIPT)

  ScriptingExecuteScriptFunction();
  ScriptingExecuteScriptFunction(const ScriptingExecuteScriptFunction&) =
      delete;
  ScriptingExecuteScriptFunction& operator=(
      const ScriptingExecuteScriptFunction&) = delete;

  // ExtensionFunction:
  ResponseAction Run() override;

 private:
  ~ScriptingExecuteScriptFunction() override;

  // Called when the resource file to be injected has been loaded.
  void DidLoadResource(bool success, std::unique_ptr<std::string> data);

  // Triggers the execution of `code_to_execute` in the appropriate context.
  // Returns true on success; on failure, populates `error`.
  bool Execute(std::string code_to_execute,
               GURL script_url,
               std::string* error);

  // Invoked when script execution is complete.
  void OnScriptExecuted(std::vector<ScriptExecutor::FrameResult> frame_results);

  api::scripting::ScriptInjection injection_;
};

class ScriptingInsertCSSFunction : public ExtensionFunction {
 public:
  DECLARE_EXTENSION_FUNCTION("scripting.insertCSS", SCRIPTING_INSERTCSS)

  ScriptingInsertCSSFunction();
  ScriptingInsertCSSFunction(const ScriptingInsertCSSFunction&) = delete;
  ScriptingInsertCSSFunction& operator=(const ScriptingInsertCSSFunction&) =
      delete;

  // ExtensionFunction:
  ResponseAction Run() override;

 private:
  ~ScriptingInsertCSSFunction() override;

  // Called when the resource file to be injected has been loaded.
  void DidLoadResource(bool success, std::unique_ptr<std::string> data);

  // Triggers the execution of `code_to_execute` in the appropriate context.
  // Returns true on success; on failure, populates `error`.
  bool Execute(std::string code_to_execute,
               GURL script_url,
               std::string* error);

  // Called when the CSS insertion is complete.
  void OnCSSInserted(std::vector<ScriptExecutor::FrameResult> results);

  api::scripting::CSSInjection injection_;
};

class ScriptingRemoveCSSFunction : public ExtensionFunction {
 public:
  DECLARE_EXTENSION_FUNCTION("scripting.removeCSS", SCRIPTING_REMOVECSS)

  ScriptingRemoveCSSFunction();
  ScriptingRemoveCSSFunction(const ScriptingRemoveCSSFunction&) = delete;
  ScriptingRemoveCSSFunction& operator=(const ScriptingRemoveCSSFunction&) =
      delete;

  // ExtensionFunction:
  ResponseAction Run() override;

 private:
  ~ScriptingRemoveCSSFunction() override;

  // Called when the CSS removal is complete.
  void OnCSSRemoved(std::vector<ScriptExecutor::FrameResult> results);
};

}  // namespace extensions

#endif  // CHROME_BROWSER_EXTENSIONS_API_SCRIPTING_SCRIPTING_API_H_