1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "chrome/browser/ui/views/frame/browser_command_handler_x11.h"
6
7#include <X11/Xlib.h>
8
9#include "chrome/browser/ui/browser.h"
10#include "chrome/browser/ui/tabs/tab_strip_model.h"
11#include "content/public/browser/navigation_controller.h"
12#include "content/public/browser/web_contents.h"
13#include "ui/events/event.h"
14#include "ui/events/event_utils.h"
15
16BrowserCommandHandlerX11::BrowserCommandHandlerX11(Browser* browser)
17    : browser_(browser) {}
18
19BrowserCommandHandlerX11::~BrowserCommandHandlerX11() {}
20
21void BrowserCommandHandlerX11::OnMouseEvent(ui::MouseEvent* event) {
22  if (event->type() != ui::ET_MOUSE_PRESSED)
23    return;
24  XEvent* xevent = event->native_event();
25  if (!xevent)
26    return;
27  int button = xevent->type == GenericEvent ? ui::EventButtonFromNative(xevent)
28                                            : xevent->xbutton.button;
29
30  // Standard Linux mouse buttons for going back and forward.
31  const int kBackMouseButton = 8;
32  const int kForwardMouseButton = 9;
33  if (button == kBackMouseButton || button == kForwardMouseButton) {
34    content::WebContents* contents =
35        browser_->tab_strip_model()->GetActiveWebContents();
36    if (!contents)
37      return;
38    content::NavigationController& controller = contents->GetController();
39    if (button == kBackMouseButton && controller.CanGoBack())
40      controller.GoBack();
41    else if (button == kForwardMouseButton && controller.CanGoForward())
42      controller.GoForward();
43    // Always consume the event, whether a navigation was successful or not.
44    event->SetHandled();
45  }
46}
47