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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
#define COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
#include <memory>
#include "base/memory/weak_ptr.h"
#include "base/timer/timer.h"
#include "components/plugins/renderer/plugin_placeholder.h"
#include "content/public/common/webplugininfo.h"
#include "content/public/renderer/render_thread.h"
namespace content {
class RenderFrame;
}
namespace plugins {
// Placeholders can be used if a plugin is missing or not available
// (blocked or disabled).
class LoadablePluginPlaceholder : public PluginPlaceholderBase {
public:
LoadablePluginPlaceholder(const LoadablePluginPlaceholder&) = delete;
LoadablePluginPlaceholder& operator=(const LoadablePluginPlaceholder&) =
delete;
void set_blocked_for_no_state_prefetching(
bool blocked_for_no_state_prefetching) {
is_blocked_for_no_state_prefetching_ = blocked_for_no_state_prefetching;
}
void AllowLoading() { allow_loading_ = true; }
// Load the blocked plugin if the identifier matches (or is empty).
void MaybeLoadBlockedPlugin(const std::string& identifier);
protected:
LoadablePluginPlaceholder(content::RenderFrame* render_frame,
const blink::WebPluginParams& params);
~LoadablePluginPlaceholder() override;
void OnSetIsNoStatePrefetching(bool is_no_state_prefetching);
void SetPluginInfo(const content::WebPluginInfo& plugin_info);
const content::WebPluginInfo& GetPluginInfo() const;
void SetIdentifier(const std::string& identifier);
bool LoadingAllowed() const { return allow_loading_; }
// Replace this placeholder with a different plugin (which could be
// a placeholder again).
void ReplacePlugin(blink::WebPlugin* new_plugin);
// Load the blocked plugin.
void LoadPlugin();
// Javascript callbacks:
void LoadCallback();
void DidFinishLoadingCallback();
private:
// WebViewPlugin::Delegate methods:
bool IsErrorPlaceholder() override;
void UpdateMessage();
bool LoadingBlocked() const;
// Plugin creation is embedder-specific.
virtual blink::WebPlugin* CreatePlugin() = 0;
content::WebPluginInfo plugin_info_;
std::u16string message_;
// True if the plugin was blocked because the page was being prefetched.
// Plugin may be automatically be loaded when the page is displayed.
bool is_blocked_for_no_state_prefetching_ = false;
bool allow_loading_ = false;
bool finished_loading_ = false;
std::string identifier_;
base::WeakPtrFactory<LoadablePluginPlaceholder> weak_factory_{this};
};
} // namespace plugins
#endif // COMPONENTS_PLUGINS_RENDERER_LOADABLE_PLUGIN_PLACEHOLDER_H_
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