Rename TextInputManager to TextInputManagerWin32 (#23905)

The current text input manager is win32-specific due to its use of
IMM32. For UWP, we'll need a TSF implementation. Once that happens we'll
want to extract out a TextInputManager interface and add a separate UWP
implementation of this class.

Author: cbracken

ci/licenses_golden/licenses_flutter

@@ -1497,8 +1497,8 @@ FILE: ../../../flutter/shell/platform/windows/task_runner_win32.cc
 FILE: ../../../flutter/shell/platform/windows/task_runner_win32.h
 FILE: ../../../flutter/shell/platform/windows/task_runner_winuwp.cc
 FILE: ../../../flutter/shell/platform/windows/task_runner_winuwp.h
-FILE: ../../../flutter/shell/platform/windows/text_input_manager.cc
-FILE: ../../../flutter/shell/platform/windows/text_input_manager.h
+FILE: ../../../flutter/shell/platform/windows/text_input_manager_win32.cc
+FILE: ../../../flutter/shell/platform/windows/text_input_manager_win32.h
 FILE: ../../../flutter/shell/platform/windows/text_input_plugin.cc
 FILE: ../../../flutter/shell/platform/windows/text_input_plugin.h
 FILE: ../../../flutter/shell/platform/windows/text_input_plugin_delegate.h

shell/platform/windows/BUILD.gn

@@ -68,8 +68,6 @@ source_set("flutter_windows_source") {
     "string_conversion.h",
     "system_utils.h",
     "task_runner.h",
-    "text_input_manager.cc",
-    "text_input_manager.h",
     "text_input_plugin.cc",
     "text_input_plugin.h",
     "window_binding_handler.h",
@@ -95,6 +93,8 @@ source_set("flutter_windows_source") {
       "system_utils_win32.cc",
       "task_runner_win32.cc",
       "task_runner_win32.h",
+      "text_input_manager_win32.cc",
+      "text_input_manager_win32.h",
       "win32_dpi_utils.cc",
       "win32_dpi_utils.h",
       "win32_flutter_window.cc",

…l/platform/windows/text_input_manager.cc …form/windows/text_input_manager_win32.ccshell/platform/windows/text_input_manager.cc renamed to shell/platform/windows/text_input_manager_win32.cc shell/platform/windows/text_input_manager.cc renamed to shell/platform/windows/text_input_manager_win32.cc

@@ -6,19 +6,19 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "flutter/shell/platform/windows/text_input_manager.h"
+#include "flutter/shell/platform/windows/text_input_manager_win32.h"
 
 #include <imm.h>
 
 #include <memory>
 
 namespace flutter {
 
-void TextInputManager::SetWindowHandle(HWND window_handle) {
+void TextInputManagerWin32::SetWindowHandle(HWND window_handle) {
   window_handle_ = window_handle;
 }
 
-void TextInputManager::CreateImeWindow() {
+void TextInputManagerWin32::CreateImeWindow() {
   if (window_handle_ == nullptr) {
     return;
   }
@@ -35,7 +35,7 @@ void TextInputManager::CreateImeWindow() {
   UpdateImeWindow();
 }
 
-void TextInputManager::DestroyImeWindow() {
+void TextInputManagerWin32::DestroyImeWindow() {
   if (window_handle_ == nullptr) {
     return;
   }
@@ -47,7 +47,7 @@ void TextInputManager::DestroyImeWindow() {
   ime_active_ = false;
 }
 
-void TextInputManager::UpdateImeWindow() {
+void TextInputManagerWin32::UpdateImeWindow() {
   if (window_handle_ == nullptr) {
     return;
   }
@@ -59,7 +59,7 @@ void TextInputManager::UpdateImeWindow() {
   }
 }
 
-void TextInputManager::UpdateCaretRect(const Rect& rect) {
+void TextInputManagerWin32::UpdateCaretRect(const Rect& rect) {
   caret_rect_ = rect;
 
   if (window_handle_ == nullptr) {
@@ -74,7 +74,7 @@ void TextInputManager::UpdateCaretRect(const Rect& rect) {
   }
 }
 
-long TextInputManager::GetComposingCursorPosition() const {
+long TextInputManagerWin32::GetComposingCursorPosition() const {
   if (window_handle_ == nullptr) {
     return false;
   }
@@ -90,15 +90,16 @@ long TextInputManager::GetComposingCursorPosition() const {
   return -1;
 }
 
-std::optional<std::u16string> TextInputManager::GetComposingString() const {
+std::optional<std::u16string> TextInputManagerWin32::GetComposingString()
+    const {
   return GetString(GCS_COMPSTR);
 }
 
-std::optional<std::u16string> TextInputManager::GetResultString() const {
+std::optional<std::u16string> TextInputManagerWin32::GetResultString() const {
   return GetString(GCS_RESULTSTR);
 }
 
-std::optional<std::u16string> TextInputManager::GetString(int type) const {
+std::optional<std::u16string> TextInputManagerWin32::GetString(int type) const {
   if (window_handle_ == nullptr || !ime_active_) {
     return std::nullopt;
   }
@@ -121,7 +122,7 @@ std::optional<std::u16string> TextInputManager::GetString(int type) const {
   return std::nullopt;
 }
 
-void TextInputManager::MoveImeWindow(HIMC imm_context) {
+void TextInputManagerWin32::MoveImeWindow(HIMC imm_context) {
   if (GetFocus() != window_handle_ || !ime_active_) {
     return;
   }

…ll/platform/windows/text_input_manager.h …tform/windows/text_input_manager_win32.hshell/platform/windows/text_input_manager.h renamed to shell/platform/windows/text_input_manager_win32.h shell/platform/windows/text_input_manager.h renamed to shell/platform/windows/text_input_manager_win32.h

@@ -25,13 +25,13 @@ namespace flutter {
 // This implementation wraps the Win32 IMM32 APIs and provides a mechanism for
 // creating and positioning the IME window, a system caret, and the candidates
 // list as well as for accessing composing and results string contents.
-class TextInputManager {
+class TextInputManagerWin32 {
  public:
-  TextInputManager() noexcept = default;
-  ~TextInputManager() = default;
+  TextInputManagerWin32() noexcept = default;
+  ~TextInputManagerWin32() = default;
 
-  TextInputManager(const TextInputManager&) = delete;
-  TextInputManager& operator=(const TextInputManager&) = delete;
+  TextInputManagerWin32(const TextInputManagerWin32&) = delete;
+  TextInputManagerWin32& operator=(const TextInputManagerWin32&) = delete;
 
   // Sets the window handle with which the IME is associated.
   void SetWindowHandle(HWND window_handle);

shell/platform/windows/win32_window.h

@@ -11,7 +11,7 @@
 #include <memory>
 #include <string>
 
-#include "flutter/shell/platform/windows/text_input_manager.h"
+#include "flutter/shell/platform/windows/text_input_manager_win32.h"
 
 namespace flutter {
 
@@ -183,7 +183,7 @@ class Win32Window {
   int keycode_for_char_message_ = 0;
 
  protected:
-  TextInputManager text_input_manager_;
+  TextInputManagerWin32 text_input_manager_;
 };
 
 }  // namespace flutter