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// Copyright (c) 2012 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 CHROME_BROWSER_UI_VIEWS_HUNG_RENDERER_VIEW_H_
#define CHROME_BROWSER_UI_VIEWS_HUNG_RENDERER_VIEW_H_
#include "base/macros.h"
#include "base/memory/scoped_vector.h"
#include "components/favicon/content/content_favicon_driver.h"
#include "content/public/browser/web_contents_observer.h"
#include "ui/base/models/table_model.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/controls/table/table_grouper.h"
#include "ui/views/controls/table/table_view.h"
#include "ui/views/window/dialog_delegate.h"
namespace content {
class WebContents;
}
namespace views {
class Label;
class LabelButton;
}
// Provides functionality to display information about a hung renderer.
class HungPagesTableModel : public ui::TableModel, public views::TableGrouper {
public:
// The Delegate is notified any time a WebContents the model is listening to
// is destroyed.
class Delegate {
public:
virtual void TabDestroyed() = 0;
protected:
virtual ~Delegate() {}
};
explicit HungPagesTableModel(Delegate* delegate);
~HungPagesTableModel() override;
void InitForWebContents(content::WebContents* hung_contents);
// Returns the first RenderProcessHost, or NULL if there aren't any
// WebContents.
content::RenderProcessHost* GetRenderProcessHost();
// Returns the first RenderViewHost, or NULL if there aren't any WebContents.
content::RenderViewHost* GetRenderViewHost();
// Overridden from ui::TableModel:
int RowCount() override;
base::string16 GetText(int row, int column_id) override;
gfx::ImageSkia GetIcon(int row) override;
void SetObserver(ui::TableModelObserver* observer) override;
// Overridden from views::TableGrouper:
void GetGroupRange(int model_index, views::GroupRange* range) override;
private:
// Used to track a single WebContents. If the WebContents is destroyed
// TabDestroyed() is invoked on the model.
class WebContentsObserverImpl : public content::WebContentsObserver {
public:
WebContentsObserverImpl(HungPagesTableModel* model,
content::WebContents* tab);
favicon::FaviconDriver* favicon_driver() {
return favicon::ContentFaviconDriver::FromWebContents(web_contents());
}
// WebContentsObserver overrides:
void RenderProcessGone(base::TerminationStatus status) override;
void WebContentsDestroyed() override;
private:
HungPagesTableModel* model_;
DISALLOW_COPY_AND_ASSIGN(WebContentsObserverImpl);
};
// Invoked when a WebContents is destroyed. Cleans up |tab_observers_| and
// notifies the observer and delegate.
void TabDestroyed(WebContentsObserverImpl* tab);
typedef ScopedVector<WebContentsObserverImpl> TabObservers;
TabObservers tab_observers_;
ui::TableModelObserver* observer_;
Delegate* delegate_;
DISALLOW_COPY_AND_ASSIGN(HungPagesTableModel);
};
// This class displays a dialog which contains information about a hung
// renderer process.
class HungRendererDialogView : public views::DialogDelegateView,
public views::ButtonListener,
public HungPagesTableModel::Delegate {
public:
// Factory function for creating an instance of the HungRendererDialogView
// class. At any given point only one instance can be active.
static HungRendererDialogView* Create(gfx::NativeWindow context);
// Returns a pointer to the singleton instance if any.
static HungRendererDialogView* GetInstance();
// Shows or hides the hung renderer dialog for the given WebContents.
static void Show(content::WebContents* contents);
static void Hide(content::WebContents* contents);
// Returns true if the frame is in the foreground.
static bool IsFrameActive(content::WebContents* contents);
virtual void ShowForWebContents(content::WebContents* contents);
virtual void EndForWebContents(content::WebContents* contents);
// views::DialogDelegateView overrides:
base::string16 GetWindowTitle() const override;
void WindowClosing() override;
int GetDialogButtons() const override;
base::string16 GetDialogButtonLabel(ui::DialogButton button) const override;
views::View* CreateExtraView() override;
bool Cancel() override;
bool UseNewStyleForThisDialog() const override;
// views::ButtonListener overrides:
void ButtonPressed(views::Button* sender, const ui::Event& event) override;
// HungPagesTableModel::Delegate overrides:
void TabDestroyed() override;
protected:
HungRendererDialogView();
~HungRendererDialogView() override;
// views::View overrides:
void ViewHierarchyChanged(
const ViewHierarchyChangedDetails& details) override;
static HungRendererDialogView* g_instance_;
private:
// Initialize the controls in this dialog.
void Init();
static void InitClass();
// An amusing icon image.
static gfx::ImageSkia* frozen_icon_;
// The label describing the list.
views::Label* info_label_;
// Controls within the dialog box.
views::TableView* hung_pages_table_;
// The extra button inserted into the ClientView to kill the errant process.
views::LabelButton* kill_button_;
// The model that provides the contents of the table that shows a list of
// pages affected by the hang.
scoped_ptr<HungPagesTableModel> hung_pages_table_model_;
// Whether or not we've created controls for ourself.
bool initialized_;
bool kill_button_clicked_;
DISALLOW_COPY_AND_ASSIGN(HungRendererDialogView);
};
#endif // CHROME_BROWSER_UI_VIEWS_HUNG_RENDERER_VIEW_H_
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