electron/shell/browser/web_view_manager.cc
2020-02-04 12:19:40 -08:00

88 lines
3 KiB
C++

// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include "shell/browser/web_view_manager.h"
#include "content/public/browser/render_frame_host.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/web_contents.h"
#include "shell/browser/electron_browser_context.h"
namespace electron {
WebViewManager::WebViewManager() = default;
WebViewManager::~WebViewManager() = default;
void WebViewManager::AddGuest(int guest_instance_id,
int element_instance_id,
content::WebContents* embedder,
content::WebContents* web_contents) {
web_contents_embedder_map_[guest_instance_id] = {web_contents, embedder};
// Map the element in embedder to guest.
int owner_process_id = embedder->GetMainFrame()->GetProcess()->GetID();
ElementInstanceKey key(owner_process_id, element_instance_id);
element_instance_id_to_guest_map_[key] = guest_instance_id;
}
void WebViewManager::RemoveGuest(int guest_instance_id) {
if (web_contents_embedder_map_.erase(guest_instance_id) == 0)
return;
// Remove the record of element in embedder too.
for (const auto& element : element_instance_id_to_guest_map_)
if (element.second == guest_instance_id) {
element_instance_id_to_guest_map_.erase(element.first);
break;
}
}
content::WebContents* WebViewManager::GetEmbedder(int guest_instance_id) {
const auto iter = web_contents_embedder_map_.find(guest_instance_id);
return iter == std::end(web_contents_embedder_map_) ? nullptr
: iter->second.embedder;
}
content::WebContents* WebViewManager::GetGuestByInstanceID(
int owner_process_id,
int element_instance_id) {
const ElementInstanceKey key(owner_process_id, element_instance_id);
const auto guest_iter = element_instance_id_to_guest_map_.find(key);
if (guest_iter == std::end(element_instance_id_to_guest_map_))
return nullptr;
const int guest_instance_id = guest_iter->second;
const auto iter = web_contents_embedder_map_.find(guest_instance_id);
return iter == std::end(web_contents_embedder_map_)
? nullptr
: iter->second.web_contents;
}
bool WebViewManager::ForEachGuest(content::WebContents* embedder_web_contents,
const GuestCallback& callback) {
for (auto& item : web_contents_embedder_map_) {
if (item.second.embedder != embedder_web_contents)
continue;
auto* guest_web_contents = item.second.web_contents;
if (guest_web_contents && callback.Run(guest_web_contents))
return true;
}
return false;
}
// static
WebViewManager* WebViewManager::GetWebViewManager(
content::WebContents* web_contents) {
auto* context = web_contents->GetBrowserContext();
if (context) {
auto* manager = context->GetGuestManager();
return static_cast<WebViewManager*>(manager);
} else {
return nullptr;
}
}
} // namespace electron