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TermInput.m
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////////////////////////////////////////////////////////////////////////////////
//
// B L I N K
//
// Copyright (C) 2016-2018 Blink Mobile Shell Project
//
// This file is part of Blink.
//
// Blink is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Blink is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Blink. If not, see <http://www.gnu.org/licenses/>.
//
// In addition, Blink is also subject to certain additional terms under
// GNU GPL version 3 section 7.
//
// You should have received a copy of these additional terms immediately
// following the terms and conditions of the GNU General Public License
// which accompanied the Blink Source Code. If not, see
// <http://www.github.com/blinksh/blink>.
//
////////////////////////////////////////////////////////////////////////////////
#import "BKDefaults.h"
#import "TermInput.h"
#import "SmartKeysController.h"
#import "SmartKeysView.h"
#import "BKSettingsNotifications.h"
#import "BKUserConfigurationManager.h"
#import "BKKeyboardModifierViewController.h"
#import "TermDevice.h"
#import "KeyInput.h"
#import "openurl.h"
static NSDictionary *bkModifierMaps = nil;
static NSDictionary *CTRLCodes = nil;
static NSDictionary *FModifiers = nil;
static NSDictionary *FKeys = nil;
static NSString *SS3 = nil;
static NSString *CSI = nil;
NSString *const TermViewCtrlSeq = @"ctrlSeq:";
NSString *const TermViewEscSeq = @"escSeq:";
NSString *const TermViewEscCtrlSeq = @"escCtrlSeq:";
NSString *const TermViewCursorFuncSeq = @"cursorSeq:";
NSString *const TermViewFFuncSeq = @"fkeySeq:";
NSString *const TermViewAutoRepeateSeq = @"autoRepeatSeq:";
@interface CC : NSObject
+ (void)initialize;
+ (NSString *)CTRL:(NSString *)c;
+ (NSString *)ESC:(NSString *)c;
+ (NSString *)KEY:(NSString *)c;
@end
@implementation CC
+ (void)initialize
{
CTRLCodes = @{
@" " : @"\x00",
@"[" : @"\x1B",
@"]" : @"\x1D",
@"\\" : @"\x1C",
@"^" : @"\x1E",
@"_" : @"\x1F",
@"/" : @"\x1F",
@"2" : @"\x00",
@"3" : @"\x1B",
@"4" : @"\x1C",
@"5" : @"\x1D",
@"6" : @"\x1E",
@"7" : @"\x1F",
@"8" : @"\x7F"
};
FModifiers = @{
@0 : @0,
@(UIKeyModifierShift) : @2,
@(UIKeyModifierAlternate) : @3,
@(UIKeyModifierShift | UIKeyModifierAlternate) : @4,
@(UIKeyModifierControl) : @5,
@(UIKeyModifierShift | UIKeyModifierControl) : @6,
@(UIKeyModifierAlternate | UIKeyModifierControl) : @7,
@(UIKeyModifierShift | UIKeyModifierAlternate | UIKeyModifierControl) : @8
};
FKeys = @{
UIKeyInputUpArrow : @"A",
UIKeyInputDownArrow : @"B",
UIKeyInputRightArrow : @"C",
UIKeyInputLeftArrow : @"D",
SpecialCursorKeyPgUp: @"5~",
SpecialCursorKeyPgDown: @"6~",
SpecialCursorKeyHome: @"H",
SpecialCursorKeyEnd: @"F"
};
SS3 = [self ESC:@"O"];
CSI = [self ESC:@"["];
}
+ (NSDictionary *)FModifiers
{
return FModifiers;
}
+ (NSString *)CTRL:(NSString *)c
{
NSString *code;
if ((code = [CTRLCodes objectForKey:c]) != nil) {
return code;
} else {
char x = [c characterAtIndex:0];
return [NSString stringWithFormat:@"%c", x - 'a' + 1];
}
}
+ (NSString *)ESC:(NSString *)c
{
if (c == nil || [c length] == 0 || c == UIKeyInputEscape) {
return @"\x1B";
} else {
return [NSString stringWithFormat:@"\x1B%c", [c characterAtIndex:0]];
}
}
+ (NSString *)KEY:(NSString *)c
{
return [CC KEY:c MOD:0 RAW:NO];
}
+ (NSString *)KEY:(NSString *)c MOD:(NSInteger)m RAW:(BOOL)raw
{
NSArray *out;
BOOL isPageCursorKey = c == SpecialCursorKeyPgUp || c == SpecialCursorKeyPgDown;
if ([FKeys.allKeys containsObject:c]) {
if (m) {
out = @[ CSI, FKeys[c] ];
} else if (raw && !isPageCursorKey) {
return [NSString stringWithFormat:@"%@%@", SS3, FKeys[c]];
} else {
return [NSString stringWithFormat:@"%@%@", CSI, FKeys[c]];
}
} else if (c == UIKeyInputEscape) {
return @"\x1B";
} else if ([c isEqual:@"\n"]) {
// See raw mode: http://man7.org/linux/man-pages/man3/termios.3.html
if (raw) {
// INLCR Translate NL to CR on input
return @"\r";
}
return c;
}
if (m) {
NSString *modSeq = [NSString stringWithFormat:@"1;%@", FModifiers[[NSNumber numberWithInteger:m]]];
return [out componentsJoinedByString:modSeq];
}
return c;
}
+ (NSString *)FKEY:(NSInteger)number
{
switch (number) {
case 1:
return [NSString stringWithFormat:@"%@P", SS3];
case 2:
return [NSString stringWithFormat:@"%@Q", SS3];
case 3:
return [NSString stringWithFormat:@"%@R", SS3];
case 4:
return [NSString stringWithFormat:@"%@S", SS3];
case 5:
return [NSString stringWithFormat:@"%@15~", CSI];
case 6:
case 7:
case 8:
return [NSString stringWithFormat:@"%@1%ld~", CSI, number + 1];
case 9:
case 10:
case 11:
case 12:
return [NSString stringWithFormat:@"%@2%ld~", CSI, number - 9];
default:
return nil;
}
}
@end
@implementation UndoManager
- (BOOL)canRedo
{
return YES;
}
- (BOOL)canUndo
{
return YES;
}
-(void)undo
{
[_undoManagerDelegate undoWithManager:self];
}
- (void)redo
{
[_undoManagerDelegate redoWithManager:self];
}
@end
@interface TermInput () <UndoManagerDelegate, UITextViewDelegate, NSTextStorageDelegate>
@end
@implementation TermInput {
NSMutableDictionary *_controlKeys;
NSMutableDictionary *_controlKeysWithoutAutoRepeat;
NSMutableDictionary *_functionKeys;
NSMutableDictionary *_functionTriggerKeys;
NSString *_specialFKeysRow;
NSSet<NSString *> *_imeLangSet;
NSMutableArray<UIKeyCommand *> *_rawAdditionalKbdCommands;
NSMutableArray<UIKeyCommand *> *_kbdCommands;
NSMutableArray<UIKeyCommand *> *_kbdCommandsWithoutAutoRepeat;
SmartKeysController *_smartKeys;
BOOL _inputEnabled;
NSString *_cmdModifierSequence;
UndoManager *_undoManager;
BOOL _skipTextStorageDelete;
NSString * _markedText;
}
+ (void)initialize
{
bkModifierMaps = @{
BKKeyboardModifierCtrl : [NSNumber numberWithInt:UIKeyModifierControl],
BKKeyboardModifierAlt : [NSNumber numberWithInt:UIKeyModifierAlternate],
BKKeyboardModifierCmd : [NSNumber numberWithInt:UIKeyModifierCommand],
BKKeyboardModifierCaps : [NSNumber numberWithInt:UIKeyModifierAlphaShift],
BKKeyboardModifierShift : [NSNumber numberWithInt:UIKeyModifierShift]
};
}
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.inputAssistantItem.leadingBarButtonGroups = @[];
self.inputAssistantItem.trailingBarButtonGroups = @[];
// Disable Smart Anything introduced within iOS11
if (@available(iOS 11.0, *)) {
self.smartDashesType = UITextSmartDashesTypeNo;
self.smartQuotesType = UITextSmartQuotesTypeNo;
self.smartInsertDeleteType = UITextSmartInsertDeleteTypeNo;
}
self.delegate = self;
_smartKeys = [[SmartKeysController alloc] init];
_smartKeys.textInputDelegate = self;
self.inputAccessoryView = [_smartKeys view];
_undoManager = [[UndoManager alloc] init];
_undoManager.undoManagerDelegate = self;
[self _configureNotifications];
[self _configureShotcuts];
[self setHidden:YES];
self.textContainerInset = UIEdgeInsetsZero;
self.textContainer.lineFragmentPadding = 0;
self.font = [UIFont fontWithName:@"Menlo" size:0];
[self _configureLangSet];
_skipTextStorageDelete = NO;
self.textStorage.delegate = self;
}
return self;
}
// Autocorrection and autocapitalization should be implemented as overrides.
// Fixes #370
- (UITextAutocorrectionType)autocorrectionType
{
return UITextAutocorrectionTypeNo;
}
- (UITextAutocapitalizationType)autocapitalizationType
{
return UITextAutocapitalizationTypeNone;
}
- (void)_configureLangSet
{
_imeLangSet = [NSSet setWithObjects:
@"zh-Hans",
@"zh-Hant",
@"ja-JP",
nil];
}
- (void)textStorage:(NSTextStorage *)textStorage
didProcessEditing:(NSTextStorageEditActions)editedMask
range:(NSRange)editedRange
changeInLength:(NSInteger)delta
{
if (delta == -1 && !_skipTextStorageDelete && !_markedText) {
[_device write:@"\x7f"];
}
}
- (NSUndoManager *)undoManager
{
return _cmdModifierSequence ? _undoManager : [super undoManager];
}
- (UIKeyboardAppearance)keyboardAppearance
{
return [BKDefaults isLightKeyboard] ? UIKeyboardAppearanceLight : UIKeyboardAppearanceDark;
}
- (void)didMoveToWindow
{
[super didMoveToWindow];
// Do not show smart kb on non touch screen
if (self.window && self.window.screen != [UIScreen mainScreen]) {
self.inputAccessoryView = nil;
}
}
- (NSString *)textInputContextIdentifier
{
// Remember current input
return @"terminput";
}
- (void)_configureNotifications
{
NSNotificationCenter *defaultCenter = [NSNotificationCenter defaultCenter];
[defaultCenter removeObserver:self];
[defaultCenter addObserver:self
selector:@selector(_configureShotcuts)
name:BKKeyboardConfigChanged
object:nil];
[defaultCenter addObserver:self
selector:@selector(_configureShotcuts)
name:BKKeyboardFuncTriggerChanged
object:nil];
}
- (BOOL)becomeFirstResponder
{
BOOL res = [super becomeFirstResponder];
if (res) {
// This is hack to fix https://github.com/blinksh/blink/issues/401 iOS kb layout bug
// we set dummy bar buttons group to leadingBarButtonGroups and set it back to empty array
// so iOS relayout kb
UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:@""
style:UIBarButtonItemStyleDone
target:self
action:@selector(resignFirstResponder)];
UIBarButtonItemGroup *group = [[UIBarButtonItemGroup alloc] initWithBarButtonItems:@[item]
representativeItem:nil];
self.inputAssistantItem.leadingBarButtonGroups = @[group];
self.inputAssistantItem.leadingBarButtonGroups = @[];
// reload input views to get rid of kb input views from other apps.
// also we should reload input views on next event loop. Otherwise inputs messed up
// with multiple screens
dispatch_async(dispatch_get_main_queue(), ^{
[self reloadInputViews];
});
[_device focus];
} else {
[_device blur];
}
return res;
}
- (BOOL)canResignFirstResponder {
return UIApplication.sharedApplication.applicationState == UIApplicationStateActive;
}
- (BOOL)resignFirstResponder
{
if (UIApplication.sharedApplication.applicationState == UIApplicationStateInactive) {
return NO;
}
[_device blur];
return [super resignFirstResponder];
}
- (void)reset
{
_skipTextStorageDelete = YES;
self.text = @"";
self.alpha = 1;
[_device.view setIme: @"" completionHandler:nil];
_markedText = nil;
_skipTextStorageDelete = NO;
}
- (void)_insertText:(NSString *)text
{
// Discard CAPS on characters when caps are mapped and there is no SW keyboard.
BOOL capsWithoutSWKeyboard = !self.softwareKB && [self _capsMapped];
if (capsWithoutSWKeyboard && text.length == 1 && [text characterAtIndex:0] > 0x1F) {
if (!_markedText) {
text = [text lowercaseString];
}
}
if (_device.view.hasSelection) {
// If the key is a special key, we do not apply modifiers.
if (text.length > 1) {
// Check if we have a function key
NSRange range = [text rangeOfString:@"FKEY"];
if (range.location == NSNotFound) {
[self _changeSelectionWithInput:text andFlags: kNilOptions];
}
} else {
NSUInteger modifiers = [[_smartKeys view] modifiers];
[self _changeSelectionWithInput:text andFlags:modifiers];
}
return;
}
// If the key is a special key, we do not apply modifiers.
if (text.length > 1) {
// Check if we have a function key
NSRange range = [text rangeOfString:@"FKEY"];
if (range.location != NSNotFound) {
NSString *value = [text substringFromIndex:(range.length)];
[_device write:[CC FKEY:[value integerValue]]];
} else {
[_device write:[CC KEY:text MOD:0 RAW:_device.rawMode]];
}
} else {
NSUInteger modifiers = [[_smartKeys view] modifiers];
if (modifiers == KbdCtrlModifier) {
[self _ctrlSeqWithInput:text];
} else if (modifiers == KbdAltModifier) {
[self _escSeqWithInput:text];
} else if (modifiers == (KbdCtrlModifier | KbdAltModifier)) {
[self _escCtrlSeqWithInput: text];
} else {
[_device write:[CC KEY:text MOD:0 RAW:_device.rawMode]];
}
}
}
- (void)setMarkedText:(NSString *)markedText selectedRange:(NSRange)selectedRange
{
[super setMarkedText:markedText selectedRange:selectedRange];
_markedText = markedText;
[self.device.view setIme: _markedText
completionHandler:^(id data, NSError * _Nullable error) {
if (!data) {
return;
}
CGRect rect = CGRectFromString(data[@"markedRect"]);
CGFloat suggestionsHeight = 44;
CGFloat maxY = CGRectGetMaxY(rect);
CGFloat minY = CGRectGetMinY(rect);
if (maxY - suggestionsHeight < 0) {
rect.origin.y = maxY;
} else {
rect.origin.y = minY - suggestionsHeight;
}
rect.size.height = 0;
self.frame = rect;
}];
}
- (void)unmarkText
{
[super unmarkText];
if (_markedText) {
[self _insertText:_markedText];
}
[self reset];
}
- (void)insertText:(NSString *)text
{
[self _insertText:text];
if (_markedText) {
[self reset];
return;
}
[super insertText:text];
NSInteger wordsToKeepInLine = 3;
text = self.text;
NSArray *comps = [text componentsSeparatedByString:@" "];
if (comps.count > wordsToKeepInLine) {
comps = [comps subarrayWithRange:NSMakeRange(comps.count - wordsToKeepInLine, wordsToKeepInLine)];
_skipTextStorageDelete = YES;
self.text = [comps componentsJoinedByString:@" "];
_skipTextStorageDelete = NO;
}
}
// Delete forward. See https://github.com/blinksh/blink/issues/559
- (void)_deleteForwardAndNotify:(bool)notify {
[_device write:@"\x1b\x5b\x33\x7e"];
}
- (void)deleteBackward
{
if (_markedText.length == 1) {
_markedText = nil;
_skipTextStorageDelete = YES;
[self unmarkText];
_skipTextStorageDelete = NO;
return;
}
// Send a delete backward key to the buffer
[_device write:@"\x7f"];
_skipTextStorageDelete = YES;
[super deleteBackward];
_skipTextStorageDelete = NO;
}
// Alt+Backspace
- (void)_deleteByWord
{
if (![self _remapInput:@"\x7f" forModifier:BKKeyboardModifierAlt]) {
// Default to `^[^?`. See https://github.com/blinksh/blink/issues/117
[_device write:[CC ESC:@"\x7f"]];
}
}
- (void)_escSeqWithInput:(NSString *)input
{
if (_device.view.hasSelection) {
if ([input isEqualToString:@""]) {
[self _changeSelectionWithInput:UIKeyInputEscape andFlags:kNilOptions];
} else {
[self _changeSelectionWithInput:input andFlags:UIKeyModifierAlternate];
}
} else {
[_device write:[CC ESC:input]];
}
}
- (void)escSeq:(UIKeyCommand *)cmd
{
[self _escSeqWithInput:cmd.input];
}
- (void)escSeqNoInput:(UIKeyCommand *)cmd
{
[self _escSeqWithInput:@""];
}
- (void)arrowSeq:(UIKeyCommand *)cmd
{
if (_device.view.hasSelection) {
[self _changeSelection:cmd];
} else {
[_device write:[CC KEY:cmd.input MOD:cmd.modifierFlags RAW:_device.rawMode]];
}
}
// Shift prints uppercase in the case CAPSLOCK is blocked
- (void)shiftSeq:(UIKeyCommand *)cmd
{
if ([cmd.input length] == 0) {
return;
} else {
[_device write:[cmd.input uppercaseString]];
}
}
- (void)_ctrlSeqWithInput:(NSString *)input
{
if (_device.view.hasSelection) {
[self _changeSelectionWithInput:input andFlags:UIKeyModifierControl];
} else {
if ([_device.delegate handleControl:input]) {
return;
}
[_device write:[CC CTRL:input]];
}
}
- (void)ctrlSeq:(UIKeyCommand *)cmd
{
if ([cmd.input length]) {
[self _ctrlSeqWithInput:cmd.input];
}
}
- (void)dummySeq:(UIKeyCommand *)cmd
{
}
- (void)_escCtrlSeqWithInput:(NSString *)input
{
NSString *seq = [NSString stringWithFormat:@"%@%@", [CC ESC:nil], [CC CTRL:input]];
[_device write:seq];
}
- (void)escCtrlSeq:(UIKeyCommand *)cmd
{
if (_device.view.hasSelection) {
[self _changeSelectionWithInput:cmd.input andFlags:UIKeyModifierControl | UIKeyModifierAlternate];
} else {
[self _escCtrlSeqWithInput:cmd.input];
}
}
- (void)cursorSeq:(UIKeyCommand *)cmd
{
if (_device.view.hasSelection) {
[self _changeSelection:cmd];
return;
}
if (cmd.input == UIKeyInputUpArrow) {
[_device write:[CC KEY:SpecialCursorKeyPgUp MOD:0 RAW:_device.rawMode]];
} else if (cmd.input == UIKeyInputDownArrow) {
[_device write:[CC KEY:SpecialCursorKeyPgDown MOD:0 RAW:_device.rawMode]];
} else if (cmd.input == UIKeyInputLeftArrow) {
[_device write:[CC KEY:SpecialCursorKeyHome MOD:0 RAW:_device.rawMode]];
} else if (cmd.input == UIKeyInputRightArrow) {
[_device write:[CC KEY:SpecialCursorKeyEnd MOD:0 RAW:_device.rawMode]];
}
}
- (void)fkeySeq:(UIKeyCommand *)cmd
{
NSInteger value = [cmd.input integerValue];
if (value == 0) {
[_device write:[CC FKEY:10]];
} else {
[_device write:[CC FKEY:value]];
}
}
- (void)autoRepeatSeq:(id)sender
{
UIKeyCommand *command = (UIKeyCommand*)sender;
if (_device.view.hasSelection) {
[self _changeSelection:command];
} else {
NSString *text = command.input;
NSUInteger modifiers = [[_smartKeys view] modifiers];
if (modifiers == KbdCtrlModifier) {
[self _ctrlSeqWithInput:text];
} else if (modifiers == KbdAltModifier) {
[self _escSeqWithInput:text];
} else if (modifiers == (KbdCtrlModifier | KbdAltModifier)) {
[self _escCtrlSeqWithInput: text];
} else {
[_device write:text];
}
}
}
- (BOOL)_remapCmdSeqWithSender:(id)sender andInput:(NSString *)input
{
if (!_cmdModifierSequence ||
[sender isKindOfClass:[UIMenuController class]]) {
return NO;
}
if (_cmdModifierSequence == TermViewCtrlSeq) {
[self _ctrlSeqWithInput:input];
} else if (_cmdModifierSequence == TermViewEscSeq) {
[self _escSeqWithInput:input];
} else {
// return NO?
}
return YES;
}
// This are all key commands capture by UIKeyInput and triggered
// straight to the handler. A different firstresponder than UIKeyInput could
// capture them, but we would not capture normal keys. We remap them
// here as commands to the terminal.
// Cmd+c
- (void)copy:(id)sender
{
if (![self _remapCmdSeqWithSender:sender andInput:@"c"]) {
[_device.view copy:sender];
}
}
// Cmd+x
- (void)cut:(id)sender
{
[self _remapCmdSeqWithSender:sender andInput:@"x"];
}
// Cmd+v
- (void)paste:(id)sender
{
if (![self _remapCmdSeqWithSender:sender andInput:@"v"]) {
[self yank:sender];
}
}
// Cmd+z
- (void)undoWithManager:(UndoManager *)manager
{
[self _remapCmdSeqWithSender:manager andInput:@"z"];
}
// Cmd+Z
- (void)redoWithManager:(UndoManager *)manager
{
[self _remapCmdSeqWithSender:manager andInput:@"Z"];
}
// Cmd+a
- (void)selectAll:(id)sender
{
[self _remapCmdSeqWithSender:sender andInput:@"a"];
}
// Cmd+b
- (void)toggleBoldface:(id)sender
{
[self _remapCmdSeqWithSender:sender andInput:@"b"];
}
// Cmd+i
- (void)toggleItalics:(id)sender
{
[self _remapCmdSeqWithSender:sender andInput:@"i"];
}
// Cmd+u
- (void)toggleUnderline:(id)sender
{
[self _remapCmdSeqWithSender:sender andInput:@"u"];
}
- (void)pasteSelection:(id)sender
{
[_device.view pasteSelection: sender];
}
- (void)copyLink:(id)sender
{
UIPasteboard.generalPasteboard.URL = [_device.view detectedLink];
[_device.view cleanSelection];
}
- (void)openLink:(id)sender
{
NSURL * url = [_device.view detectedLink];
[_device.view cleanSelection];
if (url == nil) {
return;
}
blink_openurl(url);
}
- (void)unselect:(id)sender
{
[_device.view cleanSelection];
}
- (BOOL)canPerformAction:(SEL)action withSender:(id)sender
{
if ([sender isKindOfClass:[UIMenuController class]]) {
// The menu can only perform paste methods
if (action == @selector(paste:) ||
(action == @selector(copy:) && _device.view.hasSelection) ||
(action == @selector(pasteSelection:) && _device.view.hasSelection) ||
(action == @selector(copyLink:) && _device.view.detectedLink) ||
(action == @selector(openLink:) && _device.view.detectedLink)
) {
return YES;
}
return NO;
}
// UIApplicationState appState = [[UIApplication sharedApplication] applicationState];
//
// if (appState != UIApplicationStateActive) {
// return NO;
// }
// super returns NO (No text?), so we check ourselves.
if (action == @selector(paste:) ||
action == @selector(cut:) ||
action == @selector(copy:) ||
action == @selector(select:) ||
action == @selector(selectAll:) ||
action == @selector(delete:) ||
action == @selector(toggleBoldface:) ||
action == @selector(toggleItalics:) ||
action == @selector(toggleUnderline:)
) {
return YES;
}
BOOL result = [super canPerformAction:action withSender:sender];
return result;
}
#pragma mark External Keyboard
- (void)_setKbdCommands
{
_kbdCommands = [NSMutableArray array];
_kbdCommandsWithoutAutoRepeat = [NSMutableArray array];
for (NSNumber *modifier in _functionKeys.allKeys) {
[_kbdCommands addObjectsFromArray:_functionKeys[modifier]];
if (modifier.integerValue == UIKeyModifierAlphaShift || modifier.integerValue == UIKeyModifierShift) {
continue;
}
[_kbdCommandsWithoutAutoRepeat addObjectsFromArray:_functionKeys[modifier]];
}
for (NSNumber *modifier in _functionTriggerKeys.allKeys) {
[_kbdCommands addObjectsFromArray:_functionTriggerKeys[modifier]];
[_kbdCommandsWithoutAutoRepeat addObjectsFromArray:_functionTriggerKeys[modifier]];
}
[_kbdCommands addObjectsFromArray:_rawAdditionalKbdCommands];
[_kbdCommandsWithoutAutoRepeat addObjectsFromArray:_rawAdditionalKbdCommands];
[_kbdCommands addObjectsFromArray:self._functionModifierKeys];
[_kbdCommandsWithoutAutoRepeat addObjectsFromArray:self._functionModifierKeys];
// This dummy command to hand stuck cmd key
UIKeyCommand *cmdCommand = [UIKeyCommand keyCommandWithInput:@""
modifierFlags:UIKeyModifierCommand
action:@selector(_kbCmd:)];
[_kbdCommands addObject:cmdCommand];
[_kbdCommandsWithoutAutoRepeat addObject:cmdCommand];
UIKeyCommand *altEnterCommand = [UIKeyCommand keyCommandWithInput:@"\r"
modifierFlags:UIKeyModifierAlternate
action:@selector(_altEnter:)];
[_kbdCommands addObject:altEnterCommand];
[_kbdCommandsWithoutAutoRepeat addObject:altEnterCommand];
UIKeyCommand *shiftTabCommand = [UIKeyCommand keyCommandWithInput:@"\t"
modifierFlags:UIKeyModifierShift
action:@selector(_shiftTab:)];
[_kbdCommands addObject:shiftTabCommand];
[_kbdCommandsWithoutAutoRepeat addObject:shiftTabCommand];
for (NSNumber *modifier in _controlKeysWithoutAutoRepeat.allKeys) {
[_kbdCommandsWithoutAutoRepeat addObjectsFromArray:_controlKeys[modifier]];
}
for (NSNumber *modifier in _controlKeys.allKeys) {
[_kbdCommands addObjectsFromArray:_controlKeys[modifier]];
}
}
- (void)_kbCmd:(UIKeyCommand *)cmd
{
if ([UIApplication sharedApplication].applicationState != UIApplicationStateActive) {
[self resignFirstResponder];
}
}
- (void)_altEnter:(UIKeyCommand *)cmd
{
[self escSeq:cmd];
}
- (void)_shiftTab:(UIKeyCommand *)cmd
{
[_device write:@"\x1b\x5b\x5a"];
}
- (void)_assignSequence:(NSString *)seq toModifier:(UIKeyModifierFlags)modifier
{
if (!seq) {
if (modifier == UIKeyModifierCommand) {
_cmdModifierSequence = nil;
}
[_controlKeys setObject:@[] forKey:[NSNumber numberWithInteger:modifier]];
}
NSMutableArray *cmds = [NSMutableArray array];
NSString *charset;
NSString *shiftCharset = nil;
if (seq == TermViewCtrlSeq) {
charset = @"2345678qwertyuiopasdfghjklzxcvbnm[\\]^/_\t";
if (BKDefaults.grabCtrlSpace) {
charset = [charset stringByAppendingString:@" "];
}
} else if (seq == TermViewEscCtrlSeq) {
charset = @"2345678qwertyuiopasdfghjklzxcvbnm[\\]^/_\t ";
} else if (seq == TermViewEscSeq) {
shiftCharset = @"qwertyuiopasdfghjklzxcvbnm";
charset = [shiftCharset stringByAppendingString:@"1234567890`~!@#$%^&*()_=+[]{}\\|;':\",./<>?\t"];
} else if (seq == TermViewAutoRepeateSeq) {
charset = @"qwertyuiopasdfghjklzxcvbnm1234567890";
} else {
return;
}
// Cmd is default for iOS shortcuts, so we control whether or not we are re-mapping those ourselves.
if (modifier == UIKeyModifierCommand) {
_cmdModifierSequence = seq;
}
SEL action = NSSelectorFromString(seq);
[charset enumerateSubstringsInRange:NSMakeRange(0, charset.length)
options:NSStringEnumerationByComposedCharacterSequences
usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
[cmds addObject:[UIKeyCommand keyCommandWithInput:substring
modifierFlags:modifier
action:action]];
// Capture shift key presses to get transformed and not printed lowercase when CapsLock is Ctrl
if (modifier == UIKeyModifierAlphaShift) {
[cmds addObjectsFromArray:[self _shiftMaps]];
}
}];
if (shiftCharset) {
[[shiftCharset uppercaseString] enumerateSubstringsInRange:NSMakeRange(0, shiftCharset.length)
options:NSStringEnumerationByComposedCharacterSequences
usingBlock:^(NSString *substring, NSRange substringRange, NSRange enclosingRange, BOOL *stop) {
[cmds addObject:[UIKeyCommand keyCommandWithInput:substring
modifierFlags:modifier | UIKeyModifierShift
action:action]];
}];
}
[_controlKeys setObject:cmds forKey:@(modifier)];
}
- (void)_assignKey:(NSString *)key toModifier:(UIKeyModifierFlags)modifier
{
NSMutableArray *cmds = [[NSMutableArray alloc] init];
if (key == UIKeyInputEscape) {
[cmds addObject:[UIKeyCommand keyCommandWithInput:@""
modifierFlags:modifier action:@selector(escSeq:)]];
if (modifier == UIKeyModifierAlphaShift) {
[cmds addObjectsFromArray:[self _shiftMaps]];
}
[_functionKeys setObject:cmds forKey:[NSNumber numberWithInteger:modifier]];
} else {
[_functionKeys setObject:cmds forKey:[NSNumber numberWithInteger:modifier]];
}
}
- (NSArray *)_shiftMaps
{
NSMutableArray *cmds = [[NSMutableArray alloc] init];
NSString *charset = @"qwertyuiopasdfghjklzxcvbnm";