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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.
#include "extensions/renderer/extension_helper.h"
#include "content/public/renderer/render_view.h"
#include "content/public/renderer/render_view_visitor.h"
#include "extensions/common/constants.h"
#include "extensions/common/extension_messages.h"
#include "extensions/common/permissions/permissions_data.h"
#include "extensions/common/url_pattern_set.h"
#include "extensions/renderer/api/automation/automation_api_helper.h"
#include "extensions/renderer/console.h"
#include "extensions/renderer/dispatcher.h"
#include "third_party/WebKit/public/platform/WebURLRequest.h"
#include "third_party/WebKit/public/web/WebConsoleMessage.h"
#include "third_party/WebKit/public/web/WebDocument.h"
#include "third_party/WebKit/public/web/WebLocalFrame.h"
#include "third_party/WebKit/public/web/WebView.h"
using content::ConsoleMessageLevel;
using blink::WebConsoleMessage;
using blink::WebDataSource;
using blink::WebFrame;
using blink::WebLocalFrame;
using blink::WebURLRequest;
using blink::WebView;
namespace extensions {
namespace {
// A RenderViewVisitor class that iterates through the set of available
// views, looking for a view of the given type, in the given browser window
// and within the given extension.
// Used to accumulate the list of views associated with an extension.
class ViewAccumulator : public content::RenderViewVisitor {
public:
ViewAccumulator(const std::string& extension_id,
int browser_window_id,
ViewType view_type)
: extension_id_(extension_id),
browser_window_id_(browser_window_id),
view_type_(view_type) {
}
std::vector<content::RenderView*> views() { return views_; }
// Returns false to terminate the iteration.
bool Visit(content::RenderView* render_view) override {
ExtensionHelper* helper = ExtensionHelper::Get(render_view);
if (!ViewTypeMatches(helper->view_type(), view_type_))
return true;
GURL url = render_view->GetWebView()->mainFrame()->document().url();
if (!url.SchemeIs(kExtensionScheme))
return true;
const std::string& extension_id = url.host();
if (extension_id != extension_id_)
return true;
if (browser_window_id_ != extension_misc::kUnknownWindowId &&
helper->browser_window_id() != browser_window_id_) {
return true;
}
views_.push_back(render_view);
if (view_type_ == VIEW_TYPE_EXTENSION_BACKGROUND_PAGE)
return false; // There can be only one...
return true;
}
private:
// Returns true if |type| "isa" |match|.
static bool ViewTypeMatches(ViewType type, ViewType match) {
if (type == match)
return true;
// INVALID means match all.
if (match == VIEW_TYPE_INVALID)
return true;
return false;
}
std::string extension_id_;
int browser_window_id_;
ViewType view_type_;
std::vector<content::RenderView*> views_;
};
} // namespace
// static
std::vector<content::RenderView*> ExtensionHelper::GetExtensionViews(
const std::string& extension_id,
int browser_window_id,
ViewType view_type) {
ViewAccumulator accumulator(extension_id, browser_window_id, view_type);
content::RenderView::ForEach(&accumulator);
return accumulator.views();
}
// static
content::RenderView* ExtensionHelper::GetBackgroundPage(
const std::string& extension_id) {
ViewAccumulator accumulator(extension_id, extension_misc::kUnknownWindowId,
VIEW_TYPE_EXTENSION_BACKGROUND_PAGE);
content::RenderView::ForEach(&accumulator);
CHECK_LE(accumulator.views().size(), 1u);
if (accumulator.views().size() == 0)
return NULL;
return accumulator.views()[0];
}
ExtensionHelper::ExtensionHelper(content::RenderView* render_view,
Dispatcher* dispatcher)
: content::RenderViewObserver(render_view),
content::RenderViewObserverTracker<ExtensionHelper>(render_view),
dispatcher_(dispatcher),
view_type_(VIEW_TYPE_INVALID),
tab_id_(-1),
browser_window_id_(-1) {
// Lifecycle managed by RenderViewObserver.
new AutomationApiHelper(render_view);
}
ExtensionHelper::~ExtensionHelper() {
}
bool ExtensionHelper::OnMessageReceived(const IPC::Message& message) {
bool handled = true;
IPC_BEGIN_MESSAGE_MAP(ExtensionHelper, message)
IPC_MESSAGE_HANDLER(ExtensionMsg_Response, OnExtensionResponse)
IPC_MESSAGE_HANDLER(ExtensionMsg_MessageInvoke, OnExtensionMessageInvoke)
IPC_MESSAGE_HANDLER(ExtensionMsg_SetFrameName, OnSetFrameName)
IPC_MESSAGE_HANDLER(ExtensionMsg_SetTabId, OnSetTabId)
IPC_MESSAGE_HANDLER(ExtensionMsg_UpdateBrowserWindowId,
OnUpdateBrowserWindowId)
IPC_MESSAGE_HANDLER(ExtensionMsg_NotifyRenderViewType,
OnNotifyRendererViewType)
IPC_MESSAGE_HANDLER(ExtensionMsg_AddMessageToConsole,
OnAddMessageToConsole)
IPC_MESSAGE_HANDLER(ExtensionMsg_AppWindowClosed,
OnAppWindowClosed)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP()
return handled;
}
void ExtensionHelper::DidCreateDocumentElement(WebLocalFrame* frame) {
dispatcher_->DidCreateDocumentElement(frame);
}
void ExtensionHelper::DraggableRegionsChanged(blink::WebFrame* frame) {
blink::WebVector<blink::WebDraggableRegion> webregions =
frame->document().draggableRegions();
std::vector<DraggableRegion> regions;
for (size_t i = 0; i < webregions.size(); ++i) {
DraggableRegion region;
region.bounds = webregions[i].bounds;
region.draggable = webregions[i].draggable;
regions.push_back(region);
}
Send(new ExtensionHostMsg_UpdateDraggableRegions(routing_id(), regions));
}
void ExtensionHelper::DidMatchCSS(
blink::WebLocalFrame* frame,
const blink::WebVector<blink::WebString>& newly_matching_selectors,
const blink::WebVector<blink::WebString>& stopped_matching_selectors) {
dispatcher_->DidMatchCSS(
frame, newly_matching_selectors, stopped_matching_selectors);
}
void ExtensionHelper::OnExtensionResponse(int request_id,
bool success,
const base::ListValue& response,
const std::string& error) {
dispatcher_->OnExtensionResponse(request_id,
success,
response,
error);
}
void ExtensionHelper::OnExtensionMessageInvoke(const std::string& extension_id,
const std::string& module_name,
const std::string& function_name,
const base::ListValue& args,
bool user_gesture) {
dispatcher_->InvokeModuleSystemMethod(
render_view(), extension_id, module_name, function_name, args,
user_gesture);
}
void ExtensionHelper::OnNotifyRendererViewType(ViewType type) {
view_type_ = type;
}
void ExtensionHelper::OnSetFrameName(const std::string& name) {
blink::WebView* web_view = render_view()->GetWebView();
if (web_view)
web_view->mainFrame()->setName(blink::WebString::fromUTF8(name));
}
void ExtensionHelper::OnSetTabId(int init_tab_id) {
CHECK_EQ(tab_id_, -1);
CHECK_GE(init_tab_id, 0);
tab_id_ = init_tab_id;
}
void ExtensionHelper::OnUpdateBrowserWindowId(int window_id) {
browser_window_id_ = window_id;
}
void ExtensionHelper::OnAddMessageToConsole(ConsoleMessageLevel level,
const std::string& message) {
console::AddMessage(render_view(), level, message);
}
void ExtensionHelper::OnAppWindowClosed() {
v8::HandleScope scope(v8::Isolate::GetCurrent());
v8::Handle<v8::Context> v8_context =
render_view()->GetWebView()->mainFrame()->mainWorldScriptContext();
ScriptContext* script_context =
dispatcher_->script_context_set().GetByV8Context(v8_context);
if (!script_context)
return;
script_context->module_system()->CallModuleMethod("app.window",
"onAppWindowClosed");
}
} // namespace extensions
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