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// Copyright (c) 2009 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.
#include <gtk/gtk.h>
#include "base/keyboard_code_conversion_gtk.h"
#include "base/keyboard_codes.h"
#include "views/accelerator.h"
#include "views/focus/accelerator_handler.h"
#include "views/focus/focus_manager.h"
#include "views/widget/widget_gtk.h"
#include "views/window/window_gtk.h"
namespace views {
AcceleratorHandler::AcceleratorHandler() : last_key_pressed_(0) {
}
bool AcceleratorHandler::Dispatch(GdkEvent* event) {
if (event->type != GDK_KEY_PRESS && event->type != GDK_KEY_RELEASE) {
gtk_main_do_event(event);
return true;
}
GdkEventKey* key_event = reinterpret_cast<GdkEventKey*>(event);
// Let's retrieve the focus manager for the GdkWindow.
GdkWindow* window = gdk_window_get_toplevel(key_event->window);
gpointer ptr;
gdk_window_get_user_data(window, &ptr);
if (!ptr && !gdk_window_is_visible(window)) {
// The window is destroyed while we're handling key events.
gtk_main_do_event(event);
return true;
}
DCHECK(ptr); // The top-level window is expected to always be associated
// with the top-level gtk widget.
WindowGtk* widget =
WidgetGtk::GetWindowForNative(reinterpret_cast<GtkWidget*>(ptr));
if (!widget) {
// During dnd we get events for windows we don't control (such as the
// window being dragged).
gtk_main_do_event(event);
return true;
}
FocusManager* focus_manager = widget->GetFocusManager();
if (!focus_manager) {
NOTREACHED();
return true;
}
if (event->type == GDK_KEY_PRESS) {
KeyEvent view_key_event(key_event);
// If it's the Alt key, don't send it to the focus manager until release
// (to handle focusing the menu bar).
if (view_key_event.GetKeyCode() == base::VKEY_MENU) {
last_key_pressed_ = key_event->keyval;
return true;
}
// FocusManager::OnKeyPressed and OnKeyReleased return false if this
// message has been consumed and should not be propagated further.
if (!focus_manager->OnKeyEvent(view_key_event)) {
last_key_pressed_ = key_event->keyval;
return true;
}
}
// Key release, make sure to filter-out the key release for key press consumed
// as accelerators to avoid unpaired key release.
if (event->type == GDK_KEY_RELEASE &&
key_event->keyval == last_key_pressed_) {
// Special case: the Alt key can trigger an accelerator on release
// rather than on press.
if (base::WindowsKeyCodeForGdkKeyCode(key_event->keyval) ==
base::VKEY_MENU) {
Accelerator accelerator(base::VKEY_MENU, false, false, false);
focus_manager->ProcessAccelerator(accelerator);
}
last_key_pressed_ = 0;
return true;
}
gtk_main_do_event(event);
return true;
}
} // namespace views
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