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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.
#ifndef EXTENSIONS_RENDERER_SCRIPT_INJECTION_H_
#define EXTENSIONS_RENDERER_SCRIPT_INJECTION_H_
#include "base/basictypes.h"
#include "base/macros.h"
#include "extensions/common/user_script.h"
#include "extensions/renderer/script_injector.h"
namespace blink {
class WebFrame;
}
namespace extensions {
class Extension;
struct ScriptsRunInfo;
// A script wrapper which is aware of whether or not it is allowed to execute,
// and contains the implementation to do so.
class ScriptInjection {
public:
// Return the id of the extension associated with the given world.
static std::string GetExtensionIdForIsolatedWorld(int world_id);
// Remove the isolated world associated with the given extension.
static void RemoveIsolatedWorld(const std::string& extension_id);
ScriptInjection(scoped_ptr<ScriptInjector> injector,
blink::WebFrame* web_frame,
const std::string& extension_id,
UserScript::RunLocation run_location,
int tab_id);
~ScriptInjection();
// Try to inject the script at the |current_location|. This returns true if
// the script has either injected or will never inject (i.e., if the object
// is done), and false if injection is delayed (either for permission purposes
// or because |current_location| is not the designated |run_location_|).
// NOTE: |extension| may be NULL, if the extension is removed!
bool TryToInject(UserScript::RunLocation current_location,
const Extension* extension,
ScriptsRunInfo* scripts_run_info);
// Called when permission for the given injection has been granted.
// Returns true if the injection ran.
bool OnPermissionGranted(const Extension* extension,
ScriptsRunInfo* scripts_run_info);
// Accessors.
blink::WebFrame* web_frame() const { return web_frame_; }
const std::string& extension_id() const { return extension_id_; }
int64 request_id() const { return request_id_; }
private:
// Send a message to the browser requesting permission to execute.
void RequestPermission();
// Injects the script, optionally populating |scripts_run_info|.
void Inject(const Extension* extension, ScriptsRunInfo* scripts_run_info);
// Inject any JS scripts into the |frame|, optionally populating
// |execution_results|.
void InjectJs(const Extension* extension,
blink::WebFrame* frame,
base::ListValue* execution_results);
// Inject any CSS source into the |frame|.
void InjectCss(blink::WebFrame* frame);
// Notify that we will not inject, and mark it as acknowledged.
void NotifyWillNotInject(ScriptInjector::InjectFailureReason reason);
// The injector for this injection.
scoped_ptr<ScriptInjector> injector_;
// The (main) WebFrame into which this should inject the script.
blink::WebFrame* web_frame_;
// The id of the associated extension.
std::string extension_id_;
// The location in the document load at which we inject the script.
UserScript::RunLocation run_location_;
// The tab id associated with the frame.
int tab_id_;
// This injection's request id. This will be -1 unless the injection is
// currently waiting on permission.
int64 request_id_;
// Whether or not the injection is complete, either via injecting the script
// or because it will never complete.
bool complete_;
DISALLOW_COPY_AND_ASSIGN(ScriptInjection);
};
} // namespace extensions
#endif // EXTENSIONS_RENDERER_SCRIPT_INJECTION_H_
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