2 files changed, 355 insertions, 0 deletions
diff --git a/src/common/android/applets/software_keyboard.cpp b/src/common/android/applets/software_keyboard.cpp
new file mode 100644
index 000000000..477e62b16
--- /dev/null
+++ b/src/common/android/applets/software_keyboard.cpp
@@ -0,0 +1,277 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include <map>
+#include <thread>
+
+#include <jni.h>
+
+#include "common/android/android_common.h"
+#include "common/android/applets/software_keyboard.h"
+#include "common/android/id_cache.h"
+#include "common/logging/log.h"
+#include "common/string_util.h"
+#include "core/core.h"
+
+static jclass s_software_keyboard_class;
+static jclass s_keyboard_config_class;
+static jclass s_keyboard_data_class;
+static jmethodID s_swkbd_execute_normal;
+static jmethodID s_swkbd_execute_inline;
+
+namespace Common::Android::SoftwareKeyboard {
+
+static jobject ToJKeyboardParams(const Core::Frontend::KeyboardInitializeParameters& config) {
+    JNIEnv* env = GetEnvForThread();
+    jobject object = env->AllocObject(s_keyboard_config_class);
+
+    env->SetObjectField(object,
+                        env->GetFieldID(s_keyboard_config_class, "ok_text", "Ljava/lang/String;"),
+                        ToJString(env, config.ok_text));
+    env->SetObjectField(
+        object, env->GetFieldID(s_keyboard_config_class, "header_text", "Ljava/lang/String;"),
+        ToJString(env, config.header_text));
+    env->SetObjectField(object,
+                        env->GetFieldID(s_keyboard_config_class, "sub_text", "Ljava/lang/String;"),
+                        ToJString(env, config.sub_text));
+    env->SetObjectField(
+        object, env->GetFieldID(s_keyboard_config_class, "guide_text", "Ljava/lang/String;"),
+        ToJString(env, config.guide_text));
+    env->SetObjectField(
+        object, env->GetFieldID(s_keyboard_config_class, "initial_text", "Ljava/lang/String;"),
+        ToJString(env, config.initial_text));
+    env->SetShortField(object,
+                       env->GetFieldID(s_keyboard_config_class, "left_optional_symbol_key", "S"),
+                       static_cast<jshort>(config.left_optional_symbol_key));
+    env->SetShortField(object,
+                       env->GetFieldID(s_keyboard_config_class, "right_optional_symbol_key", "S"),
+                       static_cast<jshort>(config.right_optional_symbol_key));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "max_text_length", "I"),
+                     static_cast<jint>(config.max_text_length));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "min_text_length", "I"),
+                     static_cast<jint>(config.min_text_length));
+    env->SetIntField(object,
+                     env->GetFieldID(s_keyboard_config_class, "initial_cursor_position", "I"),
+                     static_cast<jint>(config.initial_cursor_position));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "type", "I"),
+                     static_cast<jint>(config.type));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "password_mode", "I"),
+                     static_cast<jint>(config.password_mode));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "text_draw_type", "I"),
+                     static_cast<jint>(config.text_draw_type));
+    env->SetIntField(object, env->GetFieldID(s_keyboard_config_class, "key_disable_flags", "I"),
+                     static_cast<jint>(config.key_disable_flags.raw));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "use_blur_background", "Z"),
+                         static_cast<jboolean>(config.use_blur_background));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "enable_backspace_button", "Z"),
+                         static_cast<jboolean>(config.enable_backspace_button));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "enable_return_button", "Z"),
+                         static_cast<jboolean>(config.enable_return_button));
+    env->SetBooleanField(object,
+                         env->GetFieldID(s_keyboard_config_class, "disable_cancel_button", "Z"),
+                         static_cast<jboolean>(config.disable_cancel_button));
+
+    return object;
+}
+
+AndroidKeyboard::ResultData AndroidKeyboard::ResultData::CreateFromFrontend(jobject object) {
+    JNIEnv* env = GetEnvForThread();
+    const jstring string = reinterpret_cast<jstring>(env->GetObjectField(
+        object, env->GetFieldID(s_keyboard_data_class, "text", "Ljava/lang/String;")));
+    return ResultData{GetJString(env, string),
+                      static_cast<Service::AM::Frontend::SwkbdResult>(env->GetIntField(
+                          object, env->GetFieldID(s_keyboard_data_class, "result", "I")))};
+}
+
+AndroidKeyboard::~AndroidKeyboard() = default;
+
+void AndroidKeyboard::InitializeKeyboard(
+    bool is_inline, Core::Frontend::KeyboardInitializeParameters initialize_parameters,
+    SubmitNormalCallback submit_normal_callback_, SubmitInlineCallback submit_inline_callback_) {
+    if (is_inline) {
+        LOG_WARNING(
+            Frontend,
+            "(STUBBED) called, backend requested to initialize the inline software keyboard.");
+
+        submit_inline_callback = std::move(submit_inline_callback_);
+    } else {
+        LOG_WARNING(
+            Frontend,
+            "(STUBBED) called, backend requested to initialize the normal software keyboard.");
+
+        submit_normal_callback = std::move(submit_normal_callback_);
+    }
+
+    parameters = std::move(initialize_parameters);
+
+    LOG_INFO(Frontend,
+             "\nKeyboardInitializeParameters:"
+             "\nok_text={}"
+             "\nheader_text={}"
+             "\nsub_text={}"
+             "\nguide_text={}"
+             "\ninitial_text={}"
+             "\nmax_text_length={}"
+             "\nmin_text_length={}"
+             "\ninitial_cursor_position={}"
+             "\ntype={}"
+             "\npassword_mode={}"
+             "\ntext_draw_type={}"
+             "\nkey_disable_flags={}"
+             "\nuse_blur_background={}"
+             "\nenable_backspace_button={}"
+             "\nenable_return_button={}"
+             "\ndisable_cancel_button={}",
+             Common::UTF16ToUTF8(parameters.ok_text), Common::UTF16ToUTF8(parameters.header_text),
+             Common::UTF16ToUTF8(parameters.sub_text), Common::UTF16ToUTF8(parameters.guide_text),
+             Common::UTF16ToUTF8(parameters.initial_text), parameters.max_text_length,
+             parameters.min_text_length, parameters.initial_cursor_position, parameters.type,
+             parameters.password_mode, parameters.text_draw_type, parameters.key_disable_flags.raw,
+             parameters.use_blur_background, parameters.enable_backspace_button,
+             parameters.enable_return_button, parameters.disable_cancel_button);
+}
+
+void AndroidKeyboard::ShowNormalKeyboard() const {
+    LOG_DEBUG(Frontend, "called, backend requested to show the normal software keyboard.");
+
+    ResultData data{};
+
+    // Pivot to a new thread, as we cannot call GetEnvForThread() from a Fiber.
+    std::thread([&] {
+        data = ResultData::CreateFromFrontend(GetEnvForThread()->CallStaticObjectMethod(
+            s_software_keyboard_class, s_swkbd_execute_normal, ToJKeyboardParams(parameters)));
+    }).join();
+
+    SubmitNormalText(data);
+}
+
+void AndroidKeyboard::ShowTextCheckDialog(
+    Service::AM::Frontend::SwkbdTextCheckResult text_check_result,
+    std::u16string text_check_message) const {
+    LOG_WARNING(Frontend, "(STUBBED) called, backend requested to show the text check dialog.");
+}
+
+void AndroidKeyboard::ShowInlineKeyboard(
+    Core::Frontend::InlineAppearParameters appear_parameters) const {
+    LOG_WARNING(Frontend,
+                "(STUBBED) called, backend requested to show the inline software keyboard.");
+
+    LOG_INFO(Frontend,
+             "\nInlineAppearParameters:"
+             "\nmax_text_length={}"
+             "\nmin_text_length={}"
+             "\nkey_top_scale_x={}"
+             "\nkey_top_scale_y={}"
+             "\nkey_top_translate_x={}"
+             "\nkey_top_translate_y={}"
+             "\ntype={}"
+             "\nkey_disable_flags={}"
+             "\nkey_top_as_floating={}"
+             "\nenable_backspace_button={}"
+             "\nenable_return_button={}"
+             "\ndisable_cancel_button={}",
+             appear_parameters.max_text_length, appear_parameters.min_text_length,
+             appear_parameters.key_top_scale_x, appear_parameters.key_top_scale_y,
+             appear_parameters.key_top_translate_x, appear_parameters.key_top_translate_y,
+             appear_parameters.type, appear_parameters.key_disable_flags.raw,
+             appear_parameters.key_top_as_floating, appear_parameters.enable_backspace_button,
+             appear_parameters.enable_return_button, appear_parameters.disable_cancel_button);
+
+    // Pivot to a new thread, as we cannot call GetEnvForThread() from a Fiber.
+    m_is_inline_active = true;
+    std::thread([&] {
+        GetEnvForThread()->CallStaticVoidMethod(s_software_keyboard_class, s_swkbd_execute_inline,
+                                                ToJKeyboardParams(parameters));
+    }).join();
+}
+
+void AndroidKeyboard::HideInlineKeyboard() const {
+    LOG_WARNING(Frontend,
+                "(STUBBED) called, backend requested to hide the inline software keyboard.");
+}
+
+void AndroidKeyboard::InlineTextChanged(
+    Core::Frontend::InlineTextParameters text_parameters) const {
+    LOG_WARNING(Frontend,
+                "(STUBBED) called, backend requested to change the inline keyboard text.");
+
+    LOG_INFO(Frontend,
+             "\nInlineTextParameters:"
+             "\ninput_text={}"
+             "\ncursor_position={}",
+             Common::UTF16ToUTF8(text_parameters.input_text), text_parameters.cursor_position);
+
+    submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::ChangedString,
+                           text_parameters.input_text, text_parameters.cursor_position);
+}
+
+void AndroidKeyboard::ExitKeyboard() const {
+    LOG_WARNING(Frontend, "(STUBBED) called, backend requested to exit the software keyboard.");
+}
+
+void AndroidKeyboard::SubmitInlineKeyboardText(std::u16string submitted_text) {
+    if (!m_is_inline_active) {
+        return;
+    }
+
+    m_current_text += submitted_text;
+
+    submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::ChangedString, m_current_text,
+                           static_cast<int>(m_current_text.size()));
+}
+
+void AndroidKeyboard::SubmitInlineKeyboardInput(int key_code) {
+    static constexpr int KEYCODE_BACK = 4;
+    static constexpr int KEYCODE_ENTER = 66;
+    static constexpr int KEYCODE_DEL = 67;
+
+    if (!m_is_inline_active) {
+        return;
+    }
+
+    switch (key_code) {
+    case KEYCODE_BACK:
+    case KEYCODE_ENTER:
+        m_is_inline_active = false;
+        submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::DecidedEnter, m_current_text,
+                               static_cast<s32>(m_current_text.size()));
+        break;
+    case KEYCODE_DEL:
+        m_current_text.pop_back();
+        submit_inline_callback(Service::AM::Frontend::SwkbdReplyType::ChangedString, m_current_text,
+                               static_cast<int>(m_current_text.size()));
+        break;
+    }
+}
+
+void AndroidKeyboard::SubmitNormalText(const ResultData& data) const {
+    submit_normal_callback(data.result, Common::UTF8ToUTF16(data.text), true);
+}
+
+void InitJNI(JNIEnv* env) {
+    s_software_keyboard_class = reinterpret_cast<jclass>(
+        env->NewGlobalRef(env->FindClass("org/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard")));
+    s_keyboard_config_class = reinterpret_cast<jclass>(env->NewGlobalRef(
+        env->FindClass("org/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardConfig")));
+    s_keyboard_data_class = reinterpret_cast<jclass>(env->NewGlobalRef(
+        env->FindClass("org/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardData")));
+
+    s_swkbd_execute_normal = env->GetStaticMethodID(
+        s_software_keyboard_class, "executeNormal",
+        "(Lorg/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardConfig;)Lorg/yuzu/yuzu_emu/"
+        "applets/keyboard/SoftwareKeyboard$KeyboardData;");
+    s_swkbd_execute_inline = env->GetStaticMethodID(
+        s_software_keyboard_class, "executeInline",
+        "(Lorg/yuzu/yuzu_emu/applets/keyboard/SoftwareKeyboard$KeyboardConfig;)V");
+}
+
+void CleanupJNI(JNIEnv* env) {
+    env->DeleteGlobalRef(s_software_keyboard_class);
+    env->DeleteGlobalRef(s_keyboard_config_class);
+    env->DeleteGlobalRef(s_keyboard_data_class);
+}
+
+} // namespace Common::Android::SoftwareKeyboard
diff --git a/src/common/android/applets/software_keyboard.h b/src/common/android/applets/software_keyboard.h
new file mode 100644
index 000000000..9fd09d27c
--- /dev/null
+++ b/src/common/android/applets/software_keyboard.h
@@ -0,0 +1,78 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <jni.h>
+
+#include "core/frontend/applets/software_keyboard.h"
+
+namespace Common::Android::SoftwareKeyboard {
+
+class AndroidKeyboard final : public Core::Frontend::SoftwareKeyboardApplet {
+public:
+    ~AndroidKeyboard() override;
+
+    void Close() const override {
+        ExitKeyboard();
+    }
+
+    void InitializeKeyboard(bool is_inline,
+                            Core::Frontend::KeyboardInitializeParameters initialize_parameters,
+                            SubmitNormalCallback submit_normal_callback_,
+                            SubmitInlineCallback submit_inline_callback_) override;
+
+    void ShowNormalKeyboard() const override;
+
+    void ShowTextCheckDialog(Service::AM::Frontend::SwkbdTextCheckResult text_check_result,
+                             std::u16string text_check_message) const override;
+
+    void ShowInlineKeyboard(
+        Core::Frontend::InlineAppearParameters appear_parameters) const override;
+
+    void HideInlineKeyboard() const override;
+
+    void InlineTextChanged(Core::Frontend::InlineTextParameters text_parameters) const override;
+
+    void ExitKeyboard() const override;
+
+    void SubmitInlineKeyboardText(std::u16string submitted_text);
+
+    void SubmitInlineKeyboardInput(int key_code);
+
+private:
+    struct ResultData {
+        static ResultData CreateFromFrontend(jobject object);
+
+        std::string text;
+        Service::AM::Frontend::SwkbdResult result{};
+    };
+
+    void SubmitNormalText(const ResultData& result) const;
+
+    Core::Frontend::KeyboardInitializeParameters parameters{};
+
+    mutable SubmitNormalCallback submit_normal_callback;
+    mutable SubmitInlineCallback submit_inline_callback;
+
+private:
+    mutable bool m_is_inline_active{};
+    std::u16string m_current_text;
+};
+
+// Should be called in JNI_Load
+void InitJNI(JNIEnv* env);
+
+// Should be called in JNI_Unload
+void CleanupJNI(JNIEnv* env);
+
+} // namespace Common::Android::SoftwareKeyboard
+
+// Native function calls
+extern "C" {
+JNIEXPORT jobject JNICALL Java_org_citra_citra_1emu_applets_SoftwareKeyboard_ValidateFilters(
+    JNIEnv* env, jclass clazz, jstring text);
+
+JNIEXPORT jobject JNICALL Java_org_citra_citra_1emu_applets_SoftwareKeyboard_ValidateInput(
+    JNIEnv* env, jclass clazz, jstring text);
+}