chrome/browser/ui/views/frame/browser_command_handler_x11.cc

   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
  16 BrowserCommandHandlerX11::BrowserCommandHandlerX11(Browser* browser)
  17     : browser_(browser) {}
  18
  19 BrowserCommandHandlerX11::~BrowserCommandHandlerX11() {}
  20
  21 void 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 }