1 /*
2 * This file is part of the popup menu implementation for <select> elements in WebCore.
3 *
4 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
5 * Copyright (C) 2006 Michael Emmel mike.emmel@gmail.com
6 * Copyright (C) 2008 Collabora Ltd.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25 #include "config.h"
26 #include "PopupMenu.h"
27
28 #include "CString.h"
29 #include "FrameView.h"
30 #include "HostWindow.h"
31 #include "NotImplemented.h"
32 #include "PlatformString.h"
33 #include <gtk/gtk.h>
34
35 namespace WebCore {
36
PopupMenu(PopupMenuClient * client)37 PopupMenu::PopupMenu(PopupMenuClient* client)
38 : m_popupClient(client)
39 , m_popup(0)
40 {
41 }
42
~PopupMenu()43 PopupMenu::~PopupMenu()
44 {
45 if (m_popup)
46 g_object_unref(m_popup);
47 }
48
show(const IntRect & rect,FrameView * view,int index)49 void PopupMenu::show(const IntRect& rect, FrameView* view, int index)
50 {
51 ASSERT(client());
52
53 if (!m_popup) {
54 m_popup = GTK_MENU(gtk_menu_new());
55 #if GLIB_CHECK_VERSION(2,10,0)
56 g_object_ref_sink(G_OBJECT(m_popup));
57 #else
58 g_object_ref(G_OBJECT(m_popup));
59 gtk_object_sink(GTK_OBJECT(m_popup));
60 #endif
61 g_signal_connect(m_popup, "unmap", G_CALLBACK(menuUnmapped), this);
62 } else
63 gtk_container_foreach(GTK_CONTAINER(m_popup), reinterpret_cast<GtkCallback>(menuRemoveItem), this);
64
65 int x, y;
66 gdk_window_get_origin(GTK_WIDGET(view->hostWindow()->platformWindow())->window, &x, &y);
67 m_menuPosition = view->contentsToWindow(rect.location());
68 m_menuPosition = IntPoint(m_menuPosition.x() + x, m_menuPosition.y() + y + rect.height());
69 m_indexMap.clear();
70
71 const int size = client()->listSize();
72 for (int i = 0; i < size; ++i) {
73 GtkWidget* item;
74 if (client()->itemIsSeparator(i))
75 item = gtk_separator_menu_item_new();
76 else
77 item = gtk_menu_item_new_with_label(client()->itemText(i).utf8().data());
78
79 m_indexMap.add(item, i);
80 g_signal_connect(item, "activate", G_CALLBACK(menuItemActivated), this);
81
82 // FIXME: Apply the PopupMenuStyle from client()->itemStyle(i)
83 gtk_widget_set_sensitive(item, client()->itemIsEnabled(i));
84 gtk_menu_shell_append(GTK_MENU_SHELL(m_popup), item);
85 gtk_widget_show(item);
86 }
87
88 gtk_menu_set_active(m_popup, index);
89
90
91 // The size calls are directly copied from gtkcombobox.c which is LGPL
92 GtkRequisition requisition;
93 gtk_widget_set_size_request(GTK_WIDGET(m_popup), -1, -1);
94 gtk_widget_size_request(GTK_WIDGET(m_popup), &requisition);
95 gtk_widget_set_size_request(GTK_WIDGET(m_popup), MAX(rect.width(), requisition.width), -1);
96
97 GList* children = GTK_MENU_SHELL(m_popup)->children;
98 if (size)
99 for (int i = 0; i < size; i++) {
100 if (i > index)
101 break;
102
103 GtkWidget* item = reinterpret_cast<GtkWidget*>(children->data);
104 GtkRequisition itemRequisition;
105 gtk_widget_get_child_requisition(item, &itemRequisition);
106 m_menuPosition.setY(m_menuPosition.y() - itemRequisition.height);
107
108 children = g_list_next(children);
109 }
110 else
111 // Center vertically the empty popup in the combo box area
112 m_menuPosition.setY(m_menuPosition.y() - rect.height() / 2);
113
114 gtk_menu_popup(m_popup, NULL, NULL, reinterpret_cast<GtkMenuPositionFunc>(menuPositionFunction), this, 0, gtk_get_current_event_time());
115 }
116
hide()117 void PopupMenu::hide()
118 {
119 ASSERT(m_popup);
120 gtk_menu_popdown(m_popup);
121 }
122
updateFromElement()123 void PopupMenu::updateFromElement()
124 {
125 client()->setTextFromItem(client()->selectedIndex());
126 }
127
itemWritingDirectionIsNatural()128 bool PopupMenu::itemWritingDirectionIsNatural()
129 {
130 return true;
131 }
132
menuItemActivated(GtkMenuItem * item,PopupMenu * that)133 void PopupMenu::menuItemActivated(GtkMenuItem* item, PopupMenu* that)
134 {
135 ASSERT(that->client());
136 ASSERT(that->m_indexMap.contains(GTK_WIDGET(item)));
137 that->client()->valueChanged(that->m_indexMap.get(GTK_WIDGET(item)));
138 }
139
menuUnmapped(GtkWidget *,PopupMenu * that)140 void PopupMenu::menuUnmapped(GtkWidget*, PopupMenu* that)
141 {
142 ASSERT(that->client());
143 that->client()->hidePopup();
144 }
145
menuPositionFunction(GtkMenu *,gint * x,gint * y,gboolean * pushIn,PopupMenu * that)146 void PopupMenu::menuPositionFunction(GtkMenu*, gint* x, gint* y, gboolean* pushIn, PopupMenu* that)
147 {
148 *x = that->m_menuPosition.x();
149 *y = that->m_menuPosition.y();
150 *pushIn = true;
151 }
152
menuRemoveItem(GtkWidget * widget,PopupMenu * that)153 void PopupMenu::menuRemoveItem(GtkWidget* widget, PopupMenu* that)
154 {
155 ASSERT(that->m_popup);
156 gtk_container_remove(GTK_CONTAINER(that->m_popup), widget);
157 }
158
159 }
160
161