10529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch// Copyright 2014 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 50529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch#include "extensions/renderer/script_context_set.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 79ab5563a3196760eb381d102cbb2bc0f7abc6a50Ben Murdoch#include "base/message_loop/message_loop.h" 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/renderer/render_view.h" 9f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles)#include "extensions/common/extension.h" 100529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch#include "extensions/renderer/script_context.h" 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "v8/include/v8.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace extensions { 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 150529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochScriptContextSet::ScriptContextSet() { 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 170529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochScriptContextSet::~ScriptContextSet() { 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 200529e5d033099cbfc42635f6f6183833b09dff6eBen Murdochint ScriptContextSet::size() const { 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return static_cast<int>(contexts_.size()); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 240529e5d033099cbfc42635f6f6183833b09dff6eBen Murdochvoid ScriptContextSet::Add(ScriptContext* context) { 25a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#if DCHECK_IS_ON 26a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) // It's OK to insert the same context twice, but we should only ever have 270529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch // one ScriptContext per v8::Context. 28a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) for (ContextSet::iterator iter = contexts_.begin(); iter != contexts_.end(); 290529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch ++iter) { 300529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch ScriptContext* candidate = *iter; 31a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) if (candidate != context) 32a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) DCHECK(candidate->v8_context() != context->v8_context()); 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 34a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#endif 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) contexts_.insert(context); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 380529e5d033099cbfc42635f6f6183833b09dff6eBen Murdochvoid ScriptContextSet::Remove(ScriptContext* context) { 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (contexts_.erase(context)) { 402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) context->Invalidate(); 41a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) base::MessageLoop::current()->DeleteSoon(FROM_HERE, context); 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 450529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochScriptContextSet::ContextSet ScriptContextSet::GetAll() const { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return contexts_; 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 490529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochScriptContext* ScriptContextSet::GetCurrent() const { 50a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) v8::Isolate* isolate = v8::Isolate::GetCurrent(); 51a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) return isolate->InContext() ? GetByV8Context(isolate->GetCurrentContext()) 52a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) : NULL; 53eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch} 54eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 550529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochScriptContext* ScriptContextSet::GetCalling() const { 56a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) v8::Isolate* isolate = v8::Isolate::GetCurrent(); 57a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) v8::Local<v8::Context> calling = isolate->GetCallingContext(); 58eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return calling.IsEmpty() ? NULL : GetByV8Context(calling); 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 610529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochScriptContext* ScriptContextSet::GetByV8Context( 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) v8::Handle<v8::Context> v8_context) const { 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (ContextSet::const_iterator iter = contexts_.begin(); 640529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch iter != contexts_.end(); 650529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch ++iter) { 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if ((*iter)->v8_context() == v8_context) 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return *iter; 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 730529e5d033099cbfc42635f6f6183833b09dff6eBen Murdochvoid ScriptContextSet::ForEach( 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const std::string& extension_id, 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) content::RenderView* render_view, 760529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch const base::Callback<void(ScriptContext*)>& callback) const { 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We copy the context list, because calling into javascript may modify it 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // out from under us. 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ContextSet contexts = GetAll(); 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 810529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch for (ContextSet::iterator it = contexts.begin(); it != contexts.end(); ++it) { 820529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch ScriptContext* context = *it; 83868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 84868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) // For the same reason as above, contexts may become invalid while we run. 85868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (!context->is_valid()) 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!extension_id.empty()) { 89868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) const Extension* extension = context->extension(); 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!extension || (extension_id != extension->id())) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 94868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) content::RenderView* context_render_view = context->GetRenderView(); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!context_render_view) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (render_view && render_view != context_render_view) 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 101868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) callback.Run(context); 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1050529e5d033099cbfc42635f6f6183833b09dff6eBen MurdochScriptContextSet::ContextSet ScriptContextSet::OnExtensionUnloaded( 106c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) const std::string& extension_id) { 1072a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ContextSet contexts = GetAll(); 108c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ContextSet removed; 1092a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Clean up contexts belonging to the unloaded extension. This is done so 1112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // that content scripts (which remain injected into the page) don't continue 1122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // receiving events and sending messages. 1130529e5d033099cbfc42635f6f6183833b09dff6eBen Murdoch for (ContextSet::iterator it = contexts.begin(); it != contexts.end(); ++it) { 1142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if ((*it)->extension() && (*it)->extension()->id() == extension_id) { 1152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) (*it)->DispatchOnUnloadEvent(); 116c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) removed.insert(*it); 1172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) Remove(*it); 1182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 1192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) } 120c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) 121c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) return removed; 1222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 1232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace extensions 125