Zonble: IMC // Refactoring IMController.

- This commit already has vChewing Feature Customizations Applied.

Source/Engine/ControllerModules/InputState.swift

@@ -0,0 +1,219 @@
+/*
+ *  InputState.cpp
+ *
+ *  Copyright 2021-2022 vChewing Project (3-Clause BSD License).
+ *  Derived from 2011-2022 OpenVanilla Project (MIT License).
+ *  Some rights reserved. See "LICENSE.TXT" for details.
+ */
+
+import Cocoa
+
+/// Represents the states for the input method controller.
+///
+/// An input method is actually a finite state machine. It receives the inputs
+/// from hardware like keyboard and mouse, changes its state, updates user
+/// interface by the state, and finally produces the text output and then them
+/// to the client apps. It should be a one-way data flow, and the user interface
+/// and text output should follow unconditionally one single data source.
+///
+/// The InputState class is for representing what the input controller is doing,
+/// and the place to store the variables that could be used. For example, the
+/// array for the candidate list is useful only when the user is choosing a
+/// candidate, and the array should not exist when the input controller is in
+/// another state.
+///
+/// They are immutable objects. When the state changes, the controller should
+/// create a new state object to replace the current state instead of modifying
+/// the existing one.
+///
+/// vChewing's input controller has following possible states:
+///
+/// - Deactivated: The user is not using vChewing yet.
+/// - Empty: The user has switched to vChewing but did not input anything yet,
+///   or, he or she has committed text into the client apps and starts a new
+///   input phase.
+/// - Committing: The input controller is sending text to the client apps.
+/// - Inputting: The user has inputted something and the input buffer is
+///   visible.
+/// - Marking: The user is creating a area in the input buffer and about to
+///   create a new user phrase.
+/// - Choosing Candidate: The candidate window is open to let the user to choose
+///   one among the candidates.
+class InputState: NSObject {
+}
+
+/// Represents that the input controller is deactivated.
+class InputStateDeactivated: InputState {
+	override var description: String {
+		"<InputStateDeactivated>"
+	}
+}
+
+/// Represents that the composing buffer is empty.
+class InputStateEmpty: InputState {
+	@objc var composingBuffer: String {
+		""
+	}
+}
+
+/// Represents that the composing buffer is empty.
+class InputStateEmptyIgnoringPreviousState: InputState {
+	@objc var composingBuffer: String {
+		""
+	}
+}
+
+/// Represents that the input controller is committing text into client app.
+class InputStateCommitting: InputState {
+	@objc private(set) var poppedText: String = ""
+
+	@objc convenience init(poppedText: String) {
+		self.init()
+		self.poppedText = poppedText
+	}
+
+	override var description: String {
+		"<InputStateCommitting poppedText:\(poppedText)>"
+	}
+}
+
+/// Represents that the composing buffer is not empty.
+class InputStateNotEmpty: InputState {
+	@objc private(set) var composingBuffer: String = ""
+	@objc private(set) var cursorIndex: UInt = 0
+
+	@objc init(composingBuffer: String, cursorIndex: UInt) {
+		self.composingBuffer = composingBuffer
+		self.cursorIndex = cursorIndex
+	}
+
+	override var description: String {
+		"<InputStateNotEmpty, composingBuffer:\(composingBuffer), cursorIndex:\(cursorIndex)>"
+	}
+}
+
+/// Represents that the user is inputting text.
+class InputStateInputting: InputStateNotEmpty {
+	@objc var bpmfReading: String = ""
+	@objc var bpmfReadingCursorIndex: UInt8 = 0
+	@objc var poppedText: String = ""
+
+	@objc override init(composingBuffer: String, cursorIndex: UInt) {
+		super.init(composingBuffer: composingBuffer, cursorIndex: cursorIndex)
+	}
+
+	@objc var attributedString: NSAttributedString {
+		let attributedSting = NSAttributedString(string: composingBuffer, attributes: [
+			.underlineStyle: NSUnderlineStyle.single.rawValue,
+			.markedClauseSegment: 0
+		])
+		return attributedSting
+	}
+
+	override var description: String {
+		"<InputStateInputting, composingBuffer:\(composingBuffer), cursorIndex:\(cursorIndex), poppedText:\(poppedText)>"
+	}
+}
+
+private let kMinMarkRangeLength = 2
+private let kMaxMarkRangeLength = Preferences.maxCandidateLength
+
+/// Represents that the user is marking a range in the composing buffer.
+class InputStateMarking: InputStateNotEmpty {
+	@objc private(set) var markerIndex: UInt
+	@objc private(set) var markedRange: NSRange
+	@objc var tooltip: String {
+
+		if Preferences.phraseReplacementEnabled {
+			return NSLocalizedString("⚠︎ Phrase replacement mode enabled, interfering user phrase entry.", comment: "")
+		}
+
+		if markedRange.length == 0 {
+			return ""
+		}
+
+		let text = (composingBuffer as NSString).substring(with: markedRange)
+		if markedRange.length < kMinMarkRangeLength {
+			return String(format: NSLocalizedString("\"%@\" length must ≥ 2 for a user phrase.", comment: ""), text)
+		} else if (markedRange.length > kMaxMarkRangeLength) {
+			return String(format: NSLocalizedString("\"%@\" length should ≤ %d for a user phrase.", comment: ""), text, kMaxMarkRangeLength)
+		}
+		return String(format: NSLocalizedString("\"%@\" selected. ENTER to add user phrase.", comment: ""), text)
+	}
+
+	@objc private(set) var readings: [String] = []
+
+	@objc init(composingBuffer: String, cursorIndex: UInt, markerIndex: UInt, readings: [String]) {
+		self.markerIndex = markerIndex
+		let begin = min(cursorIndex, markerIndex)
+		let end = max(cursorIndex, markerIndex)
+		markedRange = NSMakeRange(Int(begin), Int(end - begin))
+		self.readings = readings
+		super.init(composingBuffer: composingBuffer, cursorIndex: cursorIndex)
+	}
+
+	@objc var attributedString: NSAttributedString {
+		let attributedSting = NSMutableAttributedString(string: composingBuffer)
+		let end = markedRange.location + markedRange.length
+
+		attributedSting.setAttributes([
+			.underlineStyle: NSUnderlineStyle.single.rawValue,
+			.markedClauseSegment: 0
+		], range: NSRange(location: 0, length: markedRange.location))
+		attributedSting.setAttributes([
+			.underlineStyle: NSUnderlineStyle.thick.rawValue,
+			.markedClauseSegment: 1
+		], range: markedRange)
+		attributedSting.setAttributes([
+			.underlineStyle: NSUnderlineStyle.single.rawValue,
+			.markedClauseSegment: 2
+		], range: NSRange(location: end,
+				length: composingBuffer.count - end))
+		return attributedSting
+	}
+
+	override var description: String {
+		"<InputStateMarking, composingBuffer:\(composingBuffer), cursorIndex:\(cursorIndex), markedRange:\(markedRange), readings:\(readings)>"
+	}
+
+	@objc func convertToInputting() -> InputStateInputting {
+		let state = InputStateInputting(composingBuffer: composingBuffer, cursorIndex: cursorIndex)
+		return state
+	}
+
+	@objc var validToWrite: Bool {
+		markedRange.length >= kMinMarkRangeLength && markedRange.length <= kMaxMarkRangeLength
+	}
+
+	@objc var userPhrase: String {
+		let text = (composingBuffer as NSString).substring(with: markedRange)
+		let end = markedRange.location + markedRange.length
+		let readings = readings[markedRange.location..<end]
+		let joined = readings.joined(separator: "-")
+		return "\(text) \(joined)"
+	}
+}
+
+/// Represents that the user is choosing in a candidates list.
+class InputStateChoosingCandidate: InputStateNotEmpty {
+	@objc private(set) var candidates: [String] = []
+	@objc private(set) var useVerticalMode: Bool = false
+
+	@objc init(composingBuffer: String, cursorIndex: UInt, candidates: [String], useVerticalMode: Bool) {
+		self.candidates = candidates
+		self.useVerticalMode = useVerticalMode
+		super.init(composingBuffer: composingBuffer, cursorIndex: cursorIndex)
+	}
+
+	@objc var attributedString: NSAttributedString {
+		let attributedSting = NSAttributedString(string: composingBuffer, attributes: [
+			.underlineStyle: NSUnderlineStyle.single.rawValue,
+			.markedClauseSegment: 0
+		])
+		return attributedSting
+	}
+
+	override var description: String {
+		"<InputStateChoosingCandidate, candidates:\(candidates), useVerticalMode:\(useVerticalMode), composingBuffer:\(composingBuffer), cursorIndex:\(cursorIndex)>"
+	}
+}

Source/Engine/ControllerModules/KeyHandler.h

@@ -0,0 +1,49 @@
+/*
+ *  KeyHandler.h
+ *
+ *  Copyright 2021-2022 vChewing Project (3-Clause BSD License).
+ *  Derived from 2011-2022 OpenVanilla Project (MIT License).
+ *  Some rights reserved. See "LICENSE.TXT" for details.
+ */
+
+#import <Foundation/Foundation.h>
+#import <string>
+#import "vChewing-Swift.h"
+
+@class KeyHandlerInput;
+@class InputState;
+@class InputStateInputting;
+@class InputStateMarking;
+
+NS_ASSUME_NONNULL_BEGIN
+
+extern NSString *const kBopomofoModeIdentifierCHS;
+extern NSString *const kBopomofoModeIdentifierCHT;
+
+@class KeyHandler;
+
+@protocol KeyHandlerDelegate <NSObject>
+- (VTCandidateController *)candidateControllerForKeyHandler:(KeyHandler *)keyHandler;
+- (void)keyHandler:(KeyHandler *)keyHandler didSelectCandidateAtIndex:(NSInteger)index candidateController:(VTCandidateController *)controller;
+- (BOOL)keyHandler:(KeyHandler *)keyHandler didRequestWriteUserPhraseWithState:(InputStateMarking *)state;
+@end
+
+@interface KeyHandler : NSObject
+
+- (BOOL)handleInput:(KeyHandlerInput *)input
+              state:(InputState *)state
+      stateCallback:(void (^)(InputState *))stateCallback
+candidateSelectionCallback:(void (^)(void))candidateSelectionCallback
+      errorCallback:(void (^)(void))errorCallback;
+
+- (void)syncWithPreferences;
+- (void)fixNodeWithValue:(std::string)value;
+- (void)clear;
+
+- (InputStateInputting *)_buildInputtingState;
+
+@property (strong, nonatomic) NSString *inputMode;
+@property (weak, nonatomic) id <KeyHandlerDelegate> delegate;
+@end
+
+NS_ASSUME_NONNULL_END

Source/Engine/ControllerModules/KeyHandlerInput.swift

@@ -0,0 +1,178 @@
+/*
+ *  KeyHandlerInput.swift
+ *
+ *  Copyright 2021-2022 vChewing Project (3-Clause BSD License).
+ *  Derived from 2011-2022 OpenVanilla Project (MIT License).
+ *  Some rights reserved. See "LICENSE.TXT" for details.
+ */
+
+import Cocoa
+
+enum KeyCode: UInt16 {
+    case none = 0
+    case enter = 76
+    case up = 126
+    case down = 125
+    case left = 123
+    case right = 124
+    case pageUp = 116
+    case pageDown = 121
+    case home = 115
+    case end = 119
+    case delete = 117
+}
+
+class KeyHandlerInput: NSObject {
+    @objc private (set) var useVerticalMode: Bool
+    @objc private (set) var inputText: String?
+    @objc private (set) var charCode: UInt16
+    private var keyCode: UInt16
+    private var flags: NSEvent.ModifierFlags
+    private var cursorForwardKey: KeyCode
+    private var cursorBackwardKey: KeyCode
+    private var extraChooseCandidateKey: KeyCode
+    private var absorbedArrowKey: KeyCode
+    private var verticalModeOnlyChooseCandidateKey: KeyCode
+    @objc private (set) var emacsKey: vChewingEmacsKey
+
+    @objc init(inputText: String?, keyCode: UInt16, charCode: UInt16, flags: NSEvent.ModifierFlags, isVerticalMode: Bool) {
+        self.inputText = inputText
+        self.keyCode = keyCode
+        self.charCode = charCode
+        self.flags = flags
+        useVerticalMode = isVerticalMode
+        emacsKey = EmacsKeyHelper.detect(charCode: charCode, flags: flags)
+        cursorForwardKey = useVerticalMode ? .down : .right
+        cursorBackwardKey = useVerticalMode ? .up : .left
+        extraChooseCandidateKey = useVerticalMode ? .left : .down
+        absorbedArrowKey = useVerticalMode ? .right : .up
+        verticalModeOnlyChooseCandidateKey = useVerticalMode ? absorbedArrowKey : .none
+        super.init()
+    }
+
+    @objc init(event: NSEvent, isVerticalMode: Bool) {
+        inputText = event.characters
+        keyCode = event.keyCode
+        flags = event.modifierFlags
+        useVerticalMode = isVerticalMode
+        let charCode: UInt16 = {
+            guard let inputText = event.characters, inputText.count > 0 else {
+                return 0
+            }
+            let first = inputText[inputText.startIndex].utf16.first!
+            return first
+        }()
+        self.charCode = charCode
+        emacsKey = EmacsKeyHelper.detect(charCode: charCode, flags: event.modifierFlags)
+        cursorForwardKey = useVerticalMode ? .down : .right
+        cursorBackwardKey = useVerticalMode ? .up : .left
+        extraChooseCandidateKey = useVerticalMode ? .left : .down
+        absorbedArrowKey = useVerticalMode ? .right : .up
+        verticalModeOnlyChooseCandidateKey = useVerticalMode ? absorbedArrowKey : .none
+        super.init()
+    }
+
+    @objc var isShiftHold: Bool {
+        flags.contains([.shift])
+    }
+
+    @objc var isCommandHold: Bool {
+        flags.contains([.command])
+    }
+
+    @objc var isControlHold: Bool {
+        flags.contains([.control])
+    }
+
+    @objc var isOptionHold: Bool {
+        flags.contains([.option])
+    }
+
+    @objc var isCapsLockOn: Bool {
+        flags.contains([.capsLock])
+    }
+
+    @objc var isNumericPad: Bool {
+        flags.contains([.numericPad])
+    }
+
+    @objc var isEnter: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.enter
+    }
+
+    @objc var isUp: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.up
+    }
+
+    @objc var isDown: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.down
+    }
+
+    @objc var isLeft: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.left
+    }
+
+    @objc var isRight: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.right
+    }
+
+    @objc var isPageUp: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.pageUp
+    }
+
+    @objc var isPageDown: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.pageDown
+    }
+
+    @objc var isHome: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.home
+    }
+
+    @objc var isEnd: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.end
+    }
+
+    @objc var isDelete: Bool {
+        KeyCode(rawValue: keyCode) == KeyCode.delete
+    }
+
+    @objc var isCursorBackward: Bool {
+        KeyCode(rawValue: keyCode) == cursorBackwardKey
+    }
+
+    @objc var isCursorForward: Bool {
+        KeyCode(rawValue: keyCode) == cursorForwardKey
+    }
+
+    @objc var isAbsorbedArrowKey: Bool {
+        KeyCode(rawValue: keyCode) == absorbedArrowKey
+    }
+
+    @objc var isExtraChooseCandidateKey: Bool {
+        KeyCode(rawValue: keyCode) == extraChooseCandidateKey
+    }
+
+    @objc var isVerticalModeOnlyChooseCandidateKey: Bool {
+        KeyCode(rawValue: keyCode) == verticalModeOnlyChooseCandidateKey
+    }
+
+}
+
+@objc enum vChewingEmacsKey: UInt16 {
+    case none = 0
+    case forward = 6 // F
+    case backward = 2 // B
+    case home = 1 // A
+    case end = 5 // E
+    case delete = 4 // D
+    case nextPage = 22 // V
+}
+
+class EmacsKeyHelper: NSObject {
+    @objc static func detect(charCode: UniChar, flags: NSEvent.ModifierFlags) -> vChewingEmacsKey {
+        if flags.contains(.control) {
+            return vChewingEmacsKey(rawValue: charCode) ?? .none
+        }
+        return .none;
+    }
+}

Source/Engine/Gramambular/BlockReadingBuilder.h

@@ -34,9 +34,7 @@ namespace Taiyan {
             void setJoinSeparator(const string& separator);
             const string joinSeparator() const;
 
-            size_t markerCursorIndex() const;
+			vector<string> readings() const;
-            void setMarkerCursorIndex(size_t inNewIndex);
-            vector<string> readingsAtRange(size_t begin, size_t end) const;
 
             Grid& grid();
                         
@@ -49,7 +47,6 @@ namespace Taiyan {
             static const size_t MaximumBuildSpanLength = 10;
             
             size_t m_cursorIndex;
-            size_t m_markerCursorIndex;
             vector<string> m_readings;
             
             Grid m_grid;
@@ -60,14 +57,12 @@ namespace Taiyan {
         inline BlockReadingBuilder::BlockReadingBuilder(LanguageModel *inLM)
             : m_LM(inLM)
             , m_cursorIndex(0)
-            , m_markerCursorIndex(SIZE_MAX)
         {
         }
         
         inline void BlockReadingBuilder::clear()
         {
             m_cursorIndex = 0;
-            m_markerCursorIndex = SIZE_MAX;
             m_readings.clear();
             m_grid.clear();
         }
@@ -86,21 +81,6 @@ namespace Taiyan {
         {
             m_cursorIndex = inNewIndex > m_readings.size() ? m_readings.size() : inNewIndex;
         }
-
-        inline size_t BlockReadingBuilder::markerCursorIndex() const
-        {
-            return m_markerCursorIndex;
-        }
-
-        inline void BlockReadingBuilder::setMarkerCursorIndex(size_t inNewIndex)
-        {
-            if (inNewIndex == SIZE_MAX) {
-                m_markerCursorIndex = SIZE_MAX;
-                return;
-            }
-
-            m_markerCursorIndex = inNewIndex > m_readings.size() ? m_readings.size() : inNewIndex;
-        }
         
         inline void BlockReadingBuilder::insertReadingAtCursor(const string& inReading)
         {
@@ -111,12 +91,9 @@ namespace Taiyan {
             m_cursorIndex++;
         }
 
-        inline vector<string> BlockReadingBuilder::readingsAtRange(size_t begin, size_t end) const {
+		inline vector<string> BlockReadingBuilder::readings() const
-            vector<string> v;
+		{
-            for (size_t i = begin; i < end; i++) {
+			return m_readings;
-                v.push_back(m_readings[i]);
-            }
-            return v;
         }
         
         inline bool BlockReadingBuilder::deleteReadingBeforeCursor()

Source/Engine/Keyboard/EmacsKeyHelper.swift

@@ -1,28 +0,0 @@
-/* 
- *  EmacsKeyHelper.swift
- *  
- *  Copyright 2021-2022 vChewing Project (3-Clause BSD License).
- *  Derived from 2011-2022 OpenVanilla Project (MIT License).
- *  Some rights reserved. See "LICENSE.TXT" for details.
- */
-
-import Cocoa
-
-@objc enum vChewingEmacsKey: UInt16 {
-    case none = 0
-    case forward = 6 // F
-    case backward = 2 // B
-    case home = 1 // A
-    case end = 5 // E
-    case delete = 4 // D
-    case nextPage = 22 // V
-}
-
-class EmacsKeyHelper: NSObject {
-    @objc static func detect(charCode: UniChar, flags: NSEvent.ModifierFlags) -> vChewingEmacsKey {
-        if flags.contains(.control) {
-            return vChewingEmacsKey(rawValue: charCode) ?? .none
-        }
-        return .none;
-    }
-}

Source/InputMethodController.h

@@ -8,43 +8,8 @@
 
 #import <Cocoa/Cocoa.h>
 #import <InputMethodKit/InputMethodKit.h>
-#import "Mandarin.hh"
+#import "vChewing-Swift.h"
-#import "Gramambular.h"
-#import "vChewingLM.h"
-#import "UserOverrideModel.h"
 
 @interface vChewingInputMethodController : IMKInputController
-{
+- (void)handleState:(InputState *)newState client:(id)client;
-@private
-    // the reading buffer that takes user input
-    Taiyan::Mandarin::BopomofoReadingBuffer* _bpmfReadingBuffer;
-
-    // language model
-    vChewing::vChewingLM *_languageModel;
-
-    // user override model
-    vChewing::UserOverrideModel *_userOverrideModel;
-    
-    // the grid (lattice) builder for the unigrams (and bigrams)
-    Taiyan::Gramambular::BlockReadingBuilder* _builder;
-
-    // latest walked path (trellis) using the Viterbi algorithm
-    std::vector<Taiyan::Gramambular::NodeAnchor> _walkedNodes;
-
-    // the latest composing buffer that is updated to the foreground app
-    NSMutableString *_composingBuffer;
-    NSInteger _latestReadingCursor;
-
-    // the current text input client; we need to keep this when candidate panel is on
-    id _currentCandidateClient;
-
-    // a special deferred client for Terminal.app fix
-    id _currentDeferredClient;
-    
-    // currently available candidates
-    NSMutableArray *_candidates;
-
-    // current input mode
-    NSString *_inputMode;
-}
 @end

Source/LanguageModelManager.mm

@@ -7,15 +7,9 @@
  */
 
 #import "LanguageModelManager.h"
-#import <fstream>
-#import <iostream>
-#import <set>
-#import "OVUTF8Helper.h"
 
 using namespace std;
-using namespace Taiyan::Gramambular;
 using namespace vChewing;
-using namespace OpenVanilla;
 
 static const int kUserOverrideModelCapacity = 500;
 static const double kObservedOverrideHalflife = 5400.0;  // 1.5 hr.
@@ -72,7 +66,7 @@ static void LTLoadLanguageModelFile(NSString *filenameWithoutExtension, vChewing
         NSLog(@"User Data Folder N/A.");
         return NO;
     }
-    if (![self checkIfFileExist:[self cnsDataPath]]) {
+    if (![self ensureFileExists:[self cnsDataPath]]) {
         NSLog(@"Extracted CNS Data Not Found.");
         return NO;
     }
@@ -122,7 +116,7 @@ static void LTLoadLanguageModelFile(NSString *filenameWithoutExtension, vChewing
     return YES;
 }
 
-+ (BOOL)checkIfFileExist:(NSString *)filePath
++ (BOOL)ensureFileExists:(NSString *)filePath
 {
     if (![[NSFileManager defaultManager] fileExistsAtPath:filePath]) {
         BOOL result = [[@"" dataUsingEncoding:NSUTF8StringEncoding] writeToFile:filePath atomically:YES];
@@ -139,22 +133,22 @@ static void LTLoadLanguageModelFile(NSString *filenameWithoutExtension, vChewing
     if (![self checkIfUserDataFolderExists]) {
         return NO;
     }
-    if (![self checkIfFileExist:[self userPhrasesDataPath:kBopomofoModeIdentifierCHT]]) {
+    if (![self ensureFileExists:[self userPhrasesDataPath:kBopomofoModeIdentifierCHT]]) {
         return NO;
     }
-    if (![self checkIfFileExist:[self excludedPhrasesDataPath:kBopomofoModeIdentifierCHT]]) {
+    if (![self ensureFileExists:[self excludedPhrasesDataPath:kBopomofoModeIdentifierCHT]]) {
         return NO;
     }
-    if (![self checkIfFileExist:[self phraseReplacementDataPath:kBopomofoModeIdentifierCHT]]) {
+    if (![self ensureFileExists:[self phraseReplacementDataPath:kBopomofoModeIdentifierCHT]]) {
         return NO;
     }
-	if (![self checkIfFileExist:[self userPhrasesDataPath:kBopomofoModeIdentifierCHS]]) {
+	if (![self ensureFileExists:[self userPhrasesDataPath:kBopomofoModeIdentifierCHS]]) {
 		return NO;
 	}
-	if (![self checkIfFileExist:[self excludedPhrasesDataPath:kBopomofoModeIdentifierCHS]]) {
+	if (![self ensureFileExists:[self excludedPhrasesDataPath:kBopomofoModeIdentifierCHS]]) {
 		return NO;
 	}
-	if (![self checkIfFileExist:[self phraseReplacementDataPath:kBopomofoModeIdentifierCHS]]) {
+	if (![self ensureFileExists:[self phraseReplacementDataPath:kBopomofoModeIdentifierCHS]]) {
 		return NO;
 	}
 	return YES;
@@ -188,7 +182,7 @@ static void LTLoadLanguageModelFile(NSString *filenameWithoutExtension, vChewing
 + (NSString *)dataFolderPath
 {
     NSArray *paths = NSSearchPathForDirectoriesInDomains(NSApplicationSupportDirectory, NSUserDirectory, YES);
-    NSString *appSupportPath = [paths objectAtIndex:0];
+	NSString *appSupportPath = paths[0];
     NSString *userDictPath = [appSupportPath stringByAppendingPathComponent:@"vChewing"];
     return userDictPath;
 }

Source/en.lproj/Localizable.strings

@@ -21,9 +21,9 @@
 "Unable to create the user phrase file." = "Unable to create the user phrase file.";
 "Please check the permission of at \"%@\"." = "Please check the permission of at \"%@\".";
 "Edit Excluded Phrases" = "Edit Excluded Phrases…";
-"Use Half-Width Punctuations" = "Use Half-Width Punctuations";
+"Half-Width Punctuation Mode" = "Half-Width Punctuation Mode";
 "\"%@\" length must ≥ 2 for a user phrase." = "\"%@\" length must ≥ 2 for a user phrase.";
-"\"%@\" length too long for a user phrase." = "\"%@\" length too long for a user phrase.";
+"\"%@\" length should ≤ %d for a user phrase." = "\"%@\" length should ≤ %d for a user phrase.";
 "\"%@\" selected. ENTER to add user phrase." = "\"%@\" selected. ENTER to add user phrase.";
 "Edit Phrase Replacement Table" = "Edit Phrase Replacement Table…";
 "Use Phrase Replacement" = "Use Phrase Replacement";

Source/ja.lproj/Localizable.strings

@@ -21,9 +21,9 @@
 "Unable to create the user phrase file." = "ユーザー辞書ファイルの作成は失敗しました。";
 "Please check the permission of at \"%@\"." = "「%@」に書き出す権限は不足らしい。";
 "Edit Excluded Phrases" = "辞書条目排除表を編集…";
-"Use Half-Width Punctuations" = "半角句読機能を起用";
+"Half-Width Punctuation Mode" = "半角句読モード";
 "\"%@\" length must ≥ 2 for a user phrase." = "「%@」もう１つ文字のお選びを。";
-"\"%@\" length too long for a user phrase." = "「%@」文字数過剰で登録不可。";
+"\"%@\" length should ≤ %d for a user phrase." = "「%@」文字数過剰で登録不可、%d 文字以内にして下さい。";
 "\"%@\" selected. ENTER to add user phrase." = "「%@」を ENTER で辞書に登録。";
 "Edit Phrase Replacement Table" = "言葉置換表を編集…";
 "Use Phrase Replacement" = "言葉置換機能";

Source/zh-Hans.lproj/Localizable.strings

@@ -21,9 +21,9 @@
 "Unable to create the user phrase file." = "无法创建自订语汇档案。";
 "Please check the permission of at \"%@\"." = "请检查此处的存取权限：\"%@\".";
 "Edit Excluded Phrases" = "编辑要滤除的语汇…";
-"Use Half-Width Punctuations" = "啟用半角標點輸出";
+"Half-Width Punctuation Mode" = "半角标点模式";
 "\"%@\" length must ≥ 2 for a user phrase." = "「%@」字数不足以自订语汇。";
-"\"%@\" length too long for a user phrase." = "「%@」字数太长、无法自订。";
+"\"%@\" length should ≤ %d for a user phrase." = "「%@」字数超过 %d、无法自订。";
 "\"%@\" selected. ENTER to add user phrase." = "「%@」敲 Enter 添入自订语汇。";
 "Edit Phrase Replacement Table" = "编辑语汇置换表…";
 "Use Phrase Replacement" = "使用语汇置换";

Source/zh-Hant.lproj/Localizable.strings

@@ -21,9 +21,9 @@
 "Unable to create the user phrase file." = "無法創建自訂語彙檔案。";
 "Please check the permission of at \"%@\"." = "請檢查此處的存取權限：\"%@\".";
 "Edit Excluded Phrases" = "編輯要濾除的語彙…";
-"Use Half-Width Punctuations" = "啟用半形標點輸出";
+"Half-Width Punctuation Mode" = "半形標點模式";
 "\"%@\" length must ≥ 2 for a user phrase." = "「%@」字數不足以自訂語彙。";
-"\"%@\" length too long for a user phrase." = "「%@」字數太長、無法自訂。";
+"\"%@\" length should ≤ %d for a user phrase." = "「%@」字數超過 %d、無法自訂。";
 "\"%@\" selected. ENTER to add user phrase." = "「%@」敲 Enter 添入自訂語彙。";
 "Edit Phrase Replacement Table" = "編輯語彙置換表…";
 "Use Phrase Replacement" = "使用語彙置換";

vChewing.xcodeproj/project.pbxproj

@@ -23,12 +23,14 @@
 		5B810D9F27A3A5E50032C1A9 /* LMConsolidator.mm in Sources */ = {isa = PBXBuildFile; fileRef = 5B810D9D27A3A5E50032C1A9 /* LMConsolidator.mm */; };
 		5B9DD0A927A7950D00ED335A /* FSEventStreamHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5B9DD0A827A7950D00ED335A /* FSEventStreamHelper.swift */; };
 		5BC2D2882793B434002C0BEC /* KeyValueBlobReader.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5BC2D2862793B434002C0BEC /* KeyValueBlobReader.cpp */; };
-		5BC2D28B2793B8FB002C0BEC /* EmacsKeyHelper.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BC2D28A2793B8FB002C0BEC /* EmacsKeyHelper.swift */; };
 		5BC2D28D2793B98F002C0BEC /* PreferencesModule.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BC2D28C2793B98F002C0BEC /* PreferencesModule.swift */; };
 		5BC3EE1B278FC48C00F5E44C /* VerticalCandidateController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BC3EE18278FC48C00F5E44C /* VerticalCandidateController.swift */; };
 		5BC3EE1C278FC48C00F5E44C /* VTCandidateController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BC3EE19278FC48C00F5E44C /* VTCandidateController.swift */; };
 		5BC3EE1D278FC48C00F5E44C /* HorizontalCandidateController.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BC3EE1A278FC48C00F5E44C /* HorizontalCandidateController.swift */; };
 		5BC3FB83278492DE0022E99A /* data-chs.txt in Resources */ = {isa = PBXBuildFile; fileRef = 5BC3FB82278492DE0022E99A /* data-chs.txt */; };
+		5BC772AA27A5A1E800CA8391 /* InputState.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BC772A927A5A1E800CA8391 /* InputState.swift */; };
+		5BC772AC27A5A31200CA8391 /* KeyHandlerInput.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BC772AB27A5A31200CA8391 /* KeyHandlerInput.swift */; };
+		5BC772B027A5B3AB00CA8391 /* KeyHandler.mm in Sources */ = {isa = PBXBuildFile; fileRef = 5BC772AD27A5A31B00CA8391 /* KeyHandler.mm */; };
 		5BD0D19427940E9D0008F48E /* Fart.aif in Resources */ = {isa = PBXBuildFile; fileRef = 5BD0D19327940E9D0008F48E /* Fart.aif */; };
 		5BD0D19A27943D390008F48E /* clsSFX.swift in Sources */ = {isa = PBXBuildFile; fileRef = 5BD0D19927943D390008F48E /* clsSFX.swift */; };
 		5BD0D19F279454F60008F48E /* Beep.aif in Resources */ = {isa = PBXBuildFile; fileRef = 5BD0D19E279454F60008F48E /* Beep.aif */; };
@@ -129,7 +131,6 @@
 		5BA923AC2791B7C20001323A /* vChewingInstaller-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = "vChewingInstaller-Bridging-Header.h"; sourceTree = "<group>"; };
 		5BC2D2842793B434002C0BEC /* KeyValueBlobReader.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = KeyValueBlobReader.h; sourceTree = "<group>"; };
 		5BC2D2862793B434002C0BEC /* KeyValueBlobReader.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = KeyValueBlobReader.cpp; sourceTree = "<group>"; };
-		5BC2D28A2793B8FB002C0BEC /* EmacsKeyHelper.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = EmacsKeyHelper.swift; sourceTree = "<group>"; };
 		5BC2D28C2793B98F002C0BEC /* PreferencesModule.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PreferencesModule.swift; sourceTree = "<group>"; };
 		5BC3EE18278FC48C00F5E44C /* VerticalCandidateController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = VerticalCandidateController.swift; sourceTree = "<group>"; };
 		5BC3EE19278FC48C00F5E44C /* VTCandidateController.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = VTCandidateController.swift; sourceTree = "<group>"; };
@@ -144,6 +145,10 @@
 		5BC4BC5B2796E6A90023BBD5 /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = Source/ja.lproj/InfoPlist.strings; sourceTree = "<group>"; };
 		5BC4BC5C2796E6A90023BBD5 /* ja */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = ja; path = Source/ja.lproj/Localizable.strings; sourceTree = "<group>"; };
 		5BC4BC5E2796F5C40023BBD5 /* en */ = {isa = PBXFileReference; lastKnownFileType = text.plist.strings; name = en; path = Source/en.lproj/preferences.strings; sourceTree = "<group>"; };
+		5BC772A927A5A1E800CA8391 /* InputState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = InputState.swift; sourceTree = "<group>"; };
+		5BC772AB27A5A31200CA8391 /* KeyHandlerInput.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = KeyHandlerInput.swift; sourceTree = "<group>"; };
+		5BC772AD27A5A31B00CA8391 /* KeyHandler.mm */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.objcpp; path = KeyHandler.mm; sourceTree = "<group>"; };
+		5BC772AE27A5A31B00CA8391 /* KeyHandler.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = KeyHandler.h; sourceTree = "<group>"; };
 		5BD0D19327940E9D0008F48E /* Fart.aif */ = {isa = PBXFileReference; lastKnownFileType = file; path = Fart.aif; sourceTree = "<group>"; };
 		5BD0D19927943D390008F48E /* clsSFX.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = clsSFX.swift; sourceTree = "<group>"; };
 		5BD0D19E279454F60008F48E /* Beep.aif */ = {isa = PBXFileReference; lastKnownFileType = file; path = Beep.aif; sourceTree = "<group>"; };
@@ -271,21 +276,17 @@
 			path = LanguageModel;
 			sourceTree = "<group>";
 		};
-		5BC2D2832793B434002C0BEC /* vChewing */ = {
+		5BC2D2832793B434002C0BEC /* ControllerModules */ = {
 			isa = PBXGroup;
 			children = (
+				5BC772AE27A5A31B00CA8391 /* KeyHandler.h */,
+				5BC772AD27A5A31B00CA8391 /* KeyHandler.mm */,
+				5BC772AB27A5A31200CA8391 /* KeyHandlerInput.swift */,
 				5BC2D2842793B434002C0BEC /* KeyValueBlobReader.h */,
 				5BC2D2862793B434002C0BEC /* KeyValueBlobReader.cpp */,
+				5BC772A927A5A1E800CA8391 /* InputState.swift */,
 			);
-			path = vChewing;
+			path = ControllerModules;
-			sourceTree = "<group>";
-		};
-		5BC2D2892793B8DB002C0BEC /* Keyboard */ = {
-			isa = PBXGroup;
-			children = (
-				5BC2D28A2793B8FB002C0BEC /* EmacsKeyHelper.swift */,
-			);
-			path = Keyboard;
 			sourceTree = "<group>";
 		};
 		5BD0D19827943D270008F48E /* SFX */ = {
@@ -452,8 +453,7 @@
 			isa = PBXGroup;
 			children = (
 				5BD0D19827943D270008F48E /* SFX */,
-				5BC2D2892793B8DB002C0BEC /* Keyboard */,
+				5BC2D2832793B434002C0BEC /* ControllerModules */,
-				5BC2D2832793B434002C0BEC /* vChewing */,
 				5BA8DAFE27928120009C9FFF /* LanguageModel */,
 				6A0D4F1315FC0EB100ABF4B3 /* Gramambular */,
 			);
@@ -711,7 +711,7 @@
 			buildActionMask = 2147483647;
 			files = (
 				5BDF2CFE2791BE4400838ADB /* InputSourceHelper.swift in Sources */,
-				5BC2D28B2793B8FB002C0BEC /* EmacsKeyHelper.swift in Sources */,
+				5BC772AC27A5A31200CA8391 /* KeyHandlerInput.swift in Sources */,
 				5BDD25F5279D6CFE00AA18F8 /* AWFileHash.m in Sources */,
 				5BDD25F8279D6D1200AA18F8 /* zip.m in Sources */,
 				5BD0D19A27943D390008F48E /* clsSFX.swift in Sources */,
@@ -727,6 +727,7 @@
 				5BE798A42792E58A00337FF9 /* TooltipController.swift in Sources */,
 				5BDD25F6279D6D0200AA18F8 /* SSZipArchive.m in Sources */,
 				5BDF2D062791DFF200838ADB /* AppDelegate.swift in Sources */,
+				5BC772B027A5B3AB00CA8391 /* KeyHandler.mm in Sources */,
 				5BC3EE1B278FC48C00F5E44C /* VerticalCandidateController.swift in Sources */,
 				5B42B64027876FDC00BB9B9F /* UserOverrideModel.mm in Sources */,
 				5BDD25F7279D6D1200AA18F8 /* unzip.m in Sources */,
@@ -743,6 +744,7 @@
 				5BC3EE1C278FC48C00F5E44C /* VTCandidateController.swift in Sources */,
 				5BDF2D032791C71200838ADB /* NonModalAlertWindowController.swift in Sources */,
 				5BC3EE1D278FC48C00F5E44C /* HorizontalCandidateController.swift in Sources */,
+				5BC772AA27A5A1E800CA8391 /* InputState.swift in Sources */,
 				5BDD25FD279D6D6300AA18F8 /* CNSLM.mm in Sources */,
 			);
 			runOnlyForDeploymentPostprocessing = 0;