Adds back some code removed during Ben's landing of views renaming.

Adds support for GTK buttons.

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/113212

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15793 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 121 insertions, 0 deletions

diff --git a/views/controls/native_view_host_gtk.cc b/views/controls/native_view_host_gtk.cc
new file mode 100644
index 0000000..5f6b8a3
--- /dev/null
+++ b/views/controls/native_view_host_gtk.cc
@@ -0,0 +1,121 @@
+// 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() {
+}
+
+NativeViewHostGtk::~NativeViewHostGtk() {
+}
+
+void NativeViewHostGtk::Attach(GtkWidget* widget) {
+  DCHECK(native_view() == NULL);
+  DCHECK(widget);
+
+  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());
+  // 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());
+}
+
+}  // namespace views