1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/gtk/gtk_key_bindings_handler.h"
#include <array>
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "ui/base/glib/gsettings.h"
#include "ui/base/ime/text_edit_commands.h"
#include "ui/events/event_constants.h"
#include "ui/gtk/gtk_compat.h"
namespace gtk {
namespace {
using KeyWithMods = std::pair<ui::KeyboardCode, ui::EventFlags>;
constexpr char kDesktopInterface[] = "org.gnome.desktop.interface";
constexpr char kGtkKeyTheme[] = "gtk-key-theme";
constexpr char kEmacsKeyTheme[] = "Emacs";
// This should contain at least all of the bindings in gtk/gtk-keys.css.emacs.
constexpr auto kEmacsBindings =
base::MakeFixedFlatMap<KeyWithMods, ui::TextEditCommand>({
{{ui::KeyboardCode::VKEY_BACK, ui::EF_ALT_DOWN},
ui::TextEditCommand::DELETE_WORD_BACKWARD},
{{ui::KeyboardCode::VKEY_A, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::MOVE_TO_BEGINNING_OF_LINE},
{{ui::KeyboardCode::VKEY_A, ui::EF_CONTROL_DOWN | ui::EF_SHIFT_DOWN},
ui::TextEditCommand::MOVE_TO_BEGINNING_OF_LINE_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_B, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::MOVE_BACKWARD},
{{ui::KeyboardCode::VKEY_B, ui::EF_CONTROL_DOWN | ui::EF_SHIFT_DOWN},
ui::TextEditCommand::MOVE_BACKWARD_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_B, ui::EF_ALT_DOWN},
ui::TextEditCommand::MOVE_WORD_LEFT},
{{ui::KeyboardCode::VKEY_B, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN},
ui::TextEditCommand::MOVE_WORD_LEFT_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_D, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::DELETE_FORWARD},
{{ui::KeyboardCode::VKEY_D, ui::EF_ALT_DOWN},
ui::TextEditCommand::DELETE_WORD_FORWARD},
{{ui::KeyboardCode::VKEY_E, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::MOVE_TO_END_OF_LINE},
{{ui::KeyboardCode::VKEY_E, ui::EF_CONTROL_DOWN | ui::EF_SHIFT_DOWN},
ui::TextEditCommand::MOVE_TO_END_OF_LINE_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_F, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::MOVE_FORWARD},
{{ui::KeyboardCode::VKEY_F, ui::EF_CONTROL_DOWN | ui::EF_SHIFT_DOWN},
ui::TextEditCommand::MOVE_FORWARD_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_F, ui::EF_ALT_DOWN},
ui::TextEditCommand::MOVE_WORD_RIGHT},
{{ui::KeyboardCode::VKEY_F, ui::EF_SHIFT_DOWN | ui::EF_ALT_DOWN},
ui::TextEditCommand::MOVE_WORD_RIGHT_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_H, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::DELETE_BACKWARD},
{{ui::KeyboardCode::VKEY_K, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::DELETE_TO_END_OF_LINE},
{{ui::KeyboardCode::VKEY_N, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::MOVE_DOWN},
{{ui::KeyboardCode::VKEY_N, ui::EF_CONTROL_DOWN | ui::EF_SHIFT_DOWN},
ui::TextEditCommand::MOVE_DOWN_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_P, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::MOVE_UP},
{{ui::KeyboardCode::VKEY_P, ui::EF_CONTROL_DOWN | ui::EF_SHIFT_DOWN},
ui::TextEditCommand::MOVE_UP_AND_MODIFY_SELECTION},
{{ui::KeyboardCode::VKEY_U, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::DELETE_TO_BEGINNING_OF_LINE},
{{ui::KeyboardCode::VKEY_W, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::DELETE_WORD_BACKWARD},
{{ui::KeyboardCode::VKEY_Y, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::YANK},
{{ui::KeyboardCode::VKEY_OEM_MINUS, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::UNDO},
{{ui::KeyboardCode::VKEY_OEM_2, ui::EF_CONTROL_DOWN},
ui::TextEditCommand::UNDO},
});
} // namespace
GtkKeyBindingsHandler::GtkKeyBindingsHandler() {
settings_ = ui::GSettingsNew(kDesktopInterface);
if (!settings_) {
return;
}
signal_ = ScopedGSignal(
settings_, "changed",
base::BindRepeating(&GtkKeyBindingsHandler::OnSettingsChanged,
base::Unretained(this)));
OnSettingsChanged(settings_.get(), kGtkKeyTheme);
}
GtkKeyBindingsHandler::~GtkKeyBindingsHandler() = default;
ui::TextEditCommand GtkKeyBindingsHandler::MatchEvent(const ui::Event& event) {
if (!emacs_theme_) {
return ui::TextEditCommand::INVALID_COMMAND;
}
auto* key_event = event.AsKeyEvent();
if (!key_event) {
return ui::TextEditCommand::INVALID_COMMAND;
}
if (key_event->is_char()) {
return ui::TextEditCommand::INVALID_COMMAND;
}
constexpr auto kModMask = ui::EF_ALTGR_DOWN | ui::EF_ALT_DOWN |
ui::EF_COMMAND_DOWN | ui::EF_CONTROL_DOWN |
ui::EF_FUNCTION_DOWN | ui::EF_MOD3_DOWN |
ui::EF_SHIFT_DOWN;
KeyWithMods key = {key_event->key_code(), key_event->flags() & kModMask};
auto it = kEmacsBindings.find(key);
return it == kEmacsBindings.end() ? ui::TextEditCommand::INVALID_COMMAND
: it->second;
}
void GtkKeyBindingsHandler::OnSettingsChanged(GSettings* settings,
const char* key) {
DCHECK(settings);
if (UNSAFE_TODO(strcmp(key, kGtkKeyTheme)) != 0) {
return;
}
auto g_free_deleter = [](gchar* s) { g_free(s); };
std::unique_ptr<gchar, decltype(g_free_deleter)> key_theme(
g_settings_get_string(settings, kGtkKeyTheme), g_free_deleter);
if (!key_theme) {
return;
}
emacs_theme_ = UNSAFE_TODO(strcmp(key_theme.get(), kEmacsKeyTheme)) == 0;
}
} // namespace gtk
|
