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// Copyright (c) 2010 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 "views/controls/menu/menu_host_gtk.h"
#include <gdk/gdk.h>
#include "views/controls/menu/menu_controller.h"
#include "views/controls/menu/menu_host_root_view.h"
#include "views/controls/menu/menu_item_view.h"
#include "views/controls/menu/submenu_view.h"
namespace views {
// static
MenuHost* MenuHost::Create(SubmenuView* submenu_view) {
return new MenuHostGtk(submenu_view);
}
MenuHostGtk::MenuHostGtk(SubmenuView* submenu)
: WidgetGtk(WidgetGtk::TYPE_POPUP),
destroying_(false),
submenu_(submenu),
did_pointer_grab_(false) {
GdkEvent* event = gtk_get_current_event();
if (event) {
if (event->type == GDK_BUTTON_PRESS || event->type == GDK_2BUTTON_PRESS ||
event->type == GDK_3BUTTON_PRESS) {
set_mouse_down(true);
}
gdk_event_free(event);
}
}
MenuHostGtk::~MenuHostGtk() {
}
void MenuHostGtk::Init(gfx::NativeWindow parent,
const gfx::Rect& bounds,
View* contents_view,
bool do_capture) {
make_transient_to_parent();
WidgetGtk::Init(GTK_WIDGET(parent), bounds);
// Make sure we get destroyed when the parent is destroyed.
gtk_window_set_destroy_with_parent(GTK_WINDOW(GetNativeView()), TRUE);
gtk_window_set_type_hint(GTK_WINDOW(GetNativeView()),
GDK_WINDOW_TYPE_HINT_MENU);
SetContentsView(contents_view);
ShowMenuHost(do_capture);
}
bool MenuHostGtk::IsMenuHostVisible() {
return IsVisible();
}
void MenuHostGtk::ShowMenuHost(bool do_capture) {
WidgetGtk::Show();
if (do_capture)
DoCapture();
}
void MenuHostGtk::HideMenuHost() {
// Make sure we release capture before hiding.
ReleaseMenuHostCapture();
WidgetGtk::Hide();
}
void MenuHostGtk::DestroyMenuHost() {
HideMenuHost();
destroying_ = true;
// We use Close instead of CloseNow to delay the deletion. If this invoked
// during a key press event, gtk still generates the release event and the
// AcceleratorHandler will use the window in the event. If we destroy the
// window now, it means AcceleratorHandler attempts to use a window that has
// been destroyed.
Close();
}
void MenuHostGtk::SetMenuHostBounds(const gfx::Rect& bounds) {
SetBounds(bounds);
}
void MenuHostGtk::ReleaseMenuHostCapture() {
ReleaseGrab();
}
gfx::NativeWindow MenuHostGtk::GetMenuHostWindow() {
return GTK_WINDOW(GetNativeView());
}
RootView* MenuHostGtk::CreateRootView() {
return new MenuHostRootView(this, submenu_);
}
bool MenuHostGtk::ReleaseCaptureOnMouseReleased() {
return false;
}
void MenuHostGtk::ReleaseGrab() {
WidgetGtk::ReleaseGrab();
if (did_pointer_grab_) {
did_pointer_grab_ = false;
gdk_pointer_ungrab(GDK_CURRENT_TIME);
}
}
void MenuHostGtk::OnDestroy(GtkWidget* object) {
if (!destroying_) {
// We weren't explicitly told to destroy ourselves, which means the menu was
// deleted out from under us (the window we're parented to was closed). Tell
// the SubmenuView to drop references to us.
submenu_->MenuHostDestroyed();
}
WidgetGtk::OnDestroy(object);
}
gboolean MenuHostGtk::OnGrabBrokeEvent(GtkWidget* widget, GdkEvent* event) {
did_pointer_grab_ = false;
// Grab can be broken by drag & drop, other menu or screen locker.
MenuController* menu_controller =
submenu_->GetMenuItem()->GetMenuController();
if (!menu_controller->drag_in_progress()) {
menu_controller->CancelAll();
}
return WidgetGtk::OnGrabBrokeEvent(widget, event);
}
void MenuHostGtk::DoCapture() {
// Release the current grab.
GtkWidget* current_grab_window = gtk_grab_get_current();
if (current_grab_window)
gtk_grab_remove(current_grab_window);
// Make sure all app mouse events are targetted at us only.
DoGrab();
// And do a grab.
// NOTE: we do this to ensure we get mouse events from other apps, a grab
// done with gtk_grab_add doesn't get events from other apps.
GdkGrabStatus grab_status =
gdk_pointer_grab(window_contents()->window, FALSE,
static_cast<GdkEventMask>(
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK),
NULL, NULL, GDK_CURRENT_TIME);
did_pointer_grab_ = (grab_status == GDK_GRAB_SUCCESS);
DCHECK(did_pointer_grab_);
// need keyboard grab.
}
} // namespace views
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