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
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
|
// 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.
#import "chrome/browser/ui/cocoa/rwhvm_editcommand_helper.h"
#import <objc/runtime.h>
#include "chrome/browser/renderer_host/render_widget_host.h"
#import "chrome/browser/renderer_host/render_widget_host_view_mac.h"
namespace {
// The names of all the objc selectors w/o ':'s added to an object by
// AddEditingSelectorsToClass().
//
// This needs to be kept in Sync with WEB_COMMAND list in the WebKit tree at:
// WebKit/mac/WebView/WebHTMLView.mm .
const char* kEditCommands[] = {
"alignCenter",
"alignJustified",
"alignLeft",
"alignRight",
"copy",
"cut",
"delete",
"deleteBackward",
"deleteBackwardByDecomposingPreviousCharacter",
"deleteForward",
"deleteToBeginningOfLine",
"deleteToBeginningOfParagraph",
"deleteToEndOfLine",
"deleteToEndOfParagraph",
"deleteToMark",
"deleteWordBackward",
"deleteWordForward",
"ignoreSpelling",
"indent",
"insertBacktab",
"insertLineBreak",
"insertNewline",
"insertNewlineIgnoringFieldEditor",
"insertParagraphSeparator",
"insertTab",
"insertTabIgnoringFieldEditor",
"makeTextWritingDirectionLeftToRight",
"makeTextWritingDirectionNatural",
"makeTextWritingDirectionRightToLeft",
"moveBackward",
"moveBackwardAndModifySelection",
"moveDown",
"moveDownAndModifySelection",
"moveForward",
"moveForwardAndModifySelection",
"moveLeft",
"moveLeftAndModifySelection",
"moveParagraphBackwardAndModifySelection",
"moveParagraphForwardAndModifySelection",
"moveRight",
"moveRightAndModifySelection",
"moveToBeginningOfDocument",
"moveToBeginningOfDocumentAndModifySelection",
"moveToBeginningOfLine",
"moveToBeginningOfLineAndModifySelection",
"moveToBeginningOfParagraph",
"moveToBeginningOfParagraphAndModifySelection",
"moveToBeginningOfSentence",
"moveToBeginningOfSentenceAndModifySelection",
"moveToEndOfDocument",
"moveToEndOfDocumentAndModifySelection",
"moveToEndOfLine",
"moveToEndOfLineAndModifySelection",
"moveToEndOfParagraph",
"moveToEndOfParagraphAndModifySelection",
"moveToEndOfSentence",
"moveToEndOfSentenceAndModifySelection",
"moveUp",
"moveUpAndModifySelection",
"moveWordBackward",
"moveWordBackwardAndModifySelection",
"moveWordForward",
"moveWordForwardAndModifySelection",
"moveWordLeft",
"moveWordLeftAndModifySelection",
"moveWordRight",
"moveWordRightAndModifySelection",
"outdent",
"pageDown",
"pageDownAndModifySelection",
"pageUp",
"pageUpAndModifySelection",
"selectAll",
"selectLine",
"selectParagraph",
"selectSentence",
"selectToMark",
"selectWord",
"setMark",
"showGuessPanel",
"subscript",
"superscript",
"swapWithMark",
"transpose",
"underline",
"unscript",
"yank",
"yankAndSelect"};
// This function is installed via the objc runtime as the implementation of all
// the various editing selectors.
// The objc runtime hookup occurs in
// RWHVMEditCommandHelper::AddEditingSelectorsToClass().
//
// self - the object we're attached to; it must implement the
// RenderWidgetHostViewMacOwner protocol.
// _cmd - the selector that fired.
// sender - the id of the object that sent the message.
//
// The selector is translated into an edit comand and then forwarded down the
// pipeline to WebCore.
// The route the message takes is:
// RenderWidgetHostViewMac -> RenderViewHost ->
// | IPC | ->
// RenderView -> currently focused WebFrame.
// The WebFrame is in the Chrome glue layer and forwards the message to WebCore.
void EditCommandImp(id self, SEL _cmd, id sender) {
// Make sure |self| is the right type.
DCHECK([self conformsToProtocol:@protocol(RenderWidgetHostViewMacOwner)]);
// SEL -> command name string.
NSString* command_name_ns =
RWHVMEditCommandHelper::CommandNameForSelector(_cmd);
std::string edit_command([command_name_ns UTF8String]);
// Forward the edit command string down the pipeline.
RenderWidgetHostViewMac* rwhv = [(id<RenderWidgetHostViewMacOwner>)self
renderWidgetHostViewMac];
DCHECK(rwhv);
// The second parameter is the core command value which isn't used here.
rwhv->GetRenderWidgetHost()->ForwardEditCommand(edit_command, "");
}
} // namespace
// Maps an objc-selector to a core command name.
//
// Returns the core command name (which is the selector name with the trailing
// ':' stripped in most cases).
//
// Adapted from a function by the same name in
// WebKit/mac/WebView/WebHTMLView.mm .
// Capitalized names are returned from this function, but that's simply
// matching WebHTMLView.mm.
NSString* RWHVMEditCommandHelper::CommandNameForSelector(SEL selector) {
if (selector == @selector(insertParagraphSeparator:) ||
selector == @selector(insertNewlineIgnoringFieldEditor:))
return @"InsertNewline";
if (selector == @selector(insertTabIgnoringFieldEditor:))
return @"InsertTab";
if (selector == @selector(pageDown:))
return @"MovePageDown";
if (selector == @selector(pageDownAndModifySelection:))
return @"MovePageDownAndModifySelection";
if (selector == @selector(pageUp:))
return @"MovePageUp";
if (selector == @selector(pageUpAndModifySelection:))
return @"MovePageUpAndModifySelection";
// Remove the trailing colon.
NSString* selector_str = NSStringFromSelector(selector);
int selector_len = [selector_str length];
return [selector_str substringToIndex:selector_len - 1];
}
RWHVMEditCommandHelper::RWHVMEditCommandHelper() {
for (size_t i = 0; i < arraysize(kEditCommands); ++i) {
edit_command_set_.insert(kEditCommands[i]);
}
}
RWHVMEditCommandHelper::~RWHVMEditCommandHelper() {}
// Dynamically adds Selectors to the aformentioned class.
void RWHVMEditCommandHelper::AddEditingSelectorsToClass(Class klass) {
for (size_t i = 0; i < arraysize(kEditCommands); ++i) {
// Append trailing ':' to command name to get selector name.
NSString* sel_str = [NSString stringWithFormat: @"%s:", kEditCommands[i]];
SEL edit_selector = NSSelectorFromString(sel_str);
// May want to use @encode() for the last parameter to this method.
// If class_addMethod fails we assume that all the editing selectors where
// added to the class.
// If a certain class already implements a method then class_addMethod
// returns NO, which we can safely ignore.
class_addMethod(klass, edit_selector, (IMP)EditCommandImp, "v@:@");
}
}
bool RWHVMEditCommandHelper::IsMenuItemEnabled(SEL item_action,
id<RenderWidgetHostViewMacOwner> owner) {
const char* selector_name = sel_getName(item_action);
// TODO(jeremy): The final form of this function will check state
// associated with the Browser.
// For now just mark all edit commands as enabled.
NSString* selector_name_ns = [NSString stringWithUTF8String:selector_name];
// Remove trailing ':'
size_t str_len = [selector_name_ns length];
selector_name_ns = [selector_name_ns substringToIndex:str_len - 1];
std::string edit_command_name([selector_name_ns UTF8String]);
// search for presence in set and return.
bool ret = edit_command_set_.find(edit_command_name) !=
edit_command_set_.end();
return ret;
}
NSArray* RWHVMEditCommandHelper::GetEditSelectorNames() {
size_t num_edit_commands = arraysize(kEditCommands);
NSMutableArray* ret = [NSMutableArray arrayWithCapacity:num_edit_commands];
for (size_t i = 0; i < num_edit_commands; ++i) {
[ret addObject:[NSString stringWithUTF8String:kEditCommands[i]]];
}
return ret;
}
|
