Refactors HWNDView, NativeViewHostGtk and NativeViewHost so that they match t...

views/controls/native_view_host_gtk.cc

-// 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 "views/controls/native_view_host_gtk.h"
-
-#include <gtk/gtk.h>
-
-#include "base/logging.h"
-#include "views/widget/widget_gtk.h"
-
-namespace views {
-
-NativeViewHostGtk::NativeViewHostGtk()
-    : NativeViewHost(),
-      destroy_signal_id_(0) {
-}
-
-NativeViewHostGtk::~NativeViewHostGtk() {
-}
-
-// static
-View* NativeViewHostGtk::GetViewForNative(GtkWidget* widget) {
-  gpointer user_data = g_object_get_data(G_OBJECT(widget), "chrome-view");
-  return static_cast<View*>(user_data);
-}
-
-// static
-void NativeViewHostGtk::SetViewForNative(GtkWidget* widget, View* view) {
-  g_object_set_data(G_OBJECT(widget), "chrome-view", view);
-}
-
-void NativeViewHostGtk::Attach(GtkWidget* widget) {
-  DCHECK(native_view() == NULL);
-  DCHECK(widget);
-
-  // Adds a mapping between the GtkWidget and us.
-  SetViewForNative(widget, this);
-
-  destroy_signal_id_ = g_signal_connect(G_OBJECT(widget), "destroy",
-                                        G_CALLBACK(CallDestroy), NULL);
-
-  set_native_view(widget);
-
-  // First hide the new window. We don't want anything to draw (like sub-hwnd
-  // borders), when we change the parent below.
-  gtk_widget_hide(widget);
-
-  // Set the parent.
-  static_cast<WidgetGtk*>(GetWidget())->AddChild(widget);
-  Layout();
-
-  // TODO: figure out focus.
-  // FocusManager::InstallFocusSubclass(
-  // hwnd, associated_focus_view()_ ? associated_focus_view() : this);
-}
-
-void NativeViewHostGtk::Detach() {
-  DCHECK(native_view());
-
-  g_signal_handler_disconnect(G_OBJECT(native_view()), destroy_signal_id_);
-  destroy_signal_id_ = 0;
-
-  // TODO: focus.
-  // FocusManager::UninstallFocusSubclass(native_view());
-  set_native_view(NULL);
-  set_installed_clip(false);
-}
-
-void NativeViewHostGtk::ViewHierarchyChanged(bool is_add, View* parent,
-                                             View* child) {
-  if (!native_view())
-    return;
-
-  WidgetGtk* parent_widget = static_cast<WidgetGtk*>(GetWidget());
-  if (is_add && parent_widget) {
-    GtkWidget* widget_parent = gtk_widget_get_parent(native_view());
-    GtkWidget* parent_widget_widget = parent_widget->child_widget_parent();
-    if (widget_parent != parent_widget_widget) {
-      g_object_ref(native_view());
-      if (widget_parent)
-        gtk_container_remove(GTK_CONTAINER(widget_parent), native_view());
-      gtk_container_add(GTK_CONTAINER(parent_widget_widget), native_view());
-      g_object_unref(native_view());
-    }
-    if (IsVisibleInRootView())
-      gtk_widget_show(native_view());
-    else
-      gtk_widget_hide(native_view());
-    Layout();
-  } else if (!is_add) {
-    gtk_widget_hide(native_view());
-    if (parent_widget) {
-      gtk_container_remove(GTK_CONTAINER(parent_widget->child_widget_parent()),
-                           native_view());
-    }
-  }
-}
-
-void NativeViewHostGtk::Focus() {
-  NOTIMPLEMENTED();
-}
-
-void NativeViewHostGtk::InstallClip(int x, int y, int w, int h) {
-  DCHECK(w > 0 && h > 0);
-
-  bool has_window = (GTK_WIDGET_FLAGS(native_view()) & GTK_NO_WINDOW) == 0;
-  if (!has_window) {
-    // Clip is only supported on GtkWidgets that have windows. If this becomes
-    // an issue (as it may be in the options dialog) we'll need to wrap the
-    // widget in a GtkFixed with a window. We have to do this as not all widgets
-    // support turning on GTK_NO_WINDOW (for example, buttons don't appear to
-    // draw anything when they have a window).
-    NOTREACHED();
-    return;
-  }
-  DCHECK(has_window);
-  // Unset the current region.
-  gdk_window_shape_combine_region(native_view()->window, NULL, 0, 0);
-
-  // Set a new region.
-  // TODO: using shapes is a bit expensive. Should investigated if there is
-  // another more efficient way to accomplish this.
-  GdkRectangle clip_rect = { x, y, w, h };
-  GdkRegion* clip_region = gdk_region_rectangle(&clip_rect);
-  gdk_window_shape_combine_region(native_view()->window, clip_region, x, y);
-  gdk_region_destroy(clip_region);
-}
-
-void NativeViewHostGtk::UninstallClip() {
-  gtk_widget_shape_combine_mask(native_view(), NULL, 0, 0);
-}
-
-void NativeViewHostGtk::ShowWidget(int x, int y, int w, int h) {
-  WidgetGtk* parent = static_cast<WidgetGtk*>(GetWidget());
-  parent->PositionChild(native_view(), x, y, w, h);
-  gtk_widget_show(native_view());
-}
-
-void NativeViewHostGtk::HideWidget() {
-  gtk_widget_hide(native_view());
-}
-
-void NativeViewHostGtk::OnDestroy() {
-  set_native_view(NULL);
-}
-
-// static
-void NativeViewHostGtk::CallDestroy(GtkObject* object) {
-  View* view = GetViewForNative(GTK_WIDGET(object));
-  if (!view)
-    return;
-
-  return static_cast<NativeViewHostGtk*>(view)->OnDestroy();
-}
-
-}  // namespace views