Android virtual keyboard respecting LineEdit max length.

13 files changed, 31 insertions, 18 deletions

diff --git a/core/os/os.cpp b/core/os/os.cpp
index 81dea159a6..1ed9484208 100644
--- a/core/os/os.cpp
+++ b/core/os/os.cpp
@@ -221,7 +221,7 @@ bool OS::has_virtual_keyboard() const {
 	return false;
 }
 
-void OS::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect) {
+void OS::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect, int p_max_input_length) {
 }
 
 void OS::hide_virtual_keyboard() {
diff --git a/core/os/os.h b/core/os/os.h
index 714c4e3f09..69f8f8f134 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -380,7 +380,7 @@ public:
 	};
 
 	virtual bool has_virtual_keyboard() const;
-	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2());
+	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), int p_max_input_length = -1);
 	virtual void hide_virtual_keyboard();
 
 	// returns height of the currently shown virtual keyboard (0 if keyboard is hidden)
diff --git a/platform/android/java/lib/src/org/godotengine/godot/GodotIO.java b/platform/android/java/lib/src/org/godotengine/godot/GodotIO.java
index 271d508a4d..68ce40ba10 100644
--- a/platform/android/java/lib/src/org/godotengine/godot/GodotIO.java
+++ b/platform/android/java/lib/src/org/godotengine/godot/GodotIO.java
@@ -491,9 +491,9 @@ public class GodotIO {
 		return (int)(metrics.density * 160f);
 	}
 
-	public void showKeyboard(String p_existing_text) {
+	public void showKeyboard(String p_existing_text, int p_max_input_length) {
 		if (edit != null)
-			edit.showKeyboard(p_existing_text);
+			edit.showKeyboard(p_existing_text, p_max_input_length);
 
 		//InputMethodManager inputMgr = (InputMethodManager)activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 		//inputMgr.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
diff --git a/platform/android/java/lib/src/org/godotengine/godot/input/GodotEditText.java b/platform/android/java/lib/src/org/godotengine/godot/input/GodotEditText.java
index 0d5521dd87..44998aa6c0 100644
--- a/platform/android/java/lib/src/org/godotengine/godot/input/GodotEditText.java
+++ b/platform/android/java/lib/src/org/godotengine/godot/input/GodotEditText.java
@@ -32,6 +32,7 @@ package org.godotengine.godot.input;
 import android.content.Context;
 import android.os.Handler;
 import android.os.Message;
+import android.text.InputFilter;
 import android.util.AttributeSet;
 import android.view.KeyEvent;
 import android.view.inputmethod.EditorInfo;
@@ -104,6 +105,7 @@ public class GodotEditText extends EditText {
 					edit.append(text);
 					edit.mInputWrapper.setOriginText(text);
 					edit.addTextChangedListener(edit.mInputWrapper);
+					setMaxInputLength(edit, msg.arg1);
 					final InputMethodManager imm = (InputMethodManager)mView.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
 					imm.showSoftInput(edit, 0);
 				}
@@ -120,6 +122,16 @@ public class GodotEditText extends EditText {
 		}
 	}
 
+	private void setMaxInputLength(EditText p_edit_text, int p_max_input_length) {
+		if (p_max_input_length >= 0) {
+			InputFilter[] filters = new InputFilter[1];
+			filters[0] = new InputFilter.LengthFilter(p_max_input_length);
+			p_edit_text.setFilters(filters);
+		} else {
+			p_edit_text.setFilters(new InputFilter[] {});
+		}
+	}
+
 	// ===========================================================
 	// Getter & Setter
 	// ===========================================================
@@ -149,12 +161,13 @@ public class GodotEditText extends EditText {
 	// ===========================================================
 	// Methods
 	// ===========================================================
-	public void showKeyboard(String p_existing_text) {
+	public void showKeyboard(String p_existing_text, int p_max_input_length) {
 		this.mOriginText = p_existing_text;
 
 		final Message msg = new Message();
 		msg.what = HANDLER_OPEN_IME_KEYBOARD;
 		msg.obj = this;
+		msg.arg1 = p_max_input_length;
 		sHandler.sendMessage(msg);
 	}
 
diff --git a/platform/android/java_godot_io_wrapper.cpp b/platform/android/java_godot_io_wrapper.cpp
index 671d1072ea..8d075f8e97 100644
--- a/platform/android/java_godot_io_wrapper.cpp
+++ b/platform/android/java_godot_io_wrapper.cpp
@@ -53,7 +53,7 @@ GodotIOJavaWrapper::GodotIOJavaWrapper(JNIEnv *p_env, jobject p_godot_io_instanc
 		_get_model = p_env->GetMethodID(cls, "getModel", "()Ljava/lang/String;");
 		_get_screen_DPI = p_env->GetMethodID(cls, "getScreenDPI", "()I");
 		_get_unique_id = p_env->GetMethodID(cls, "getUniqueID", "()Ljava/lang/String;");
-		_show_keyboard = p_env->GetMethodID(cls, "showKeyboard", "(Ljava/lang/String;)V");
+		_show_keyboard = p_env->GetMethodID(cls, "showKeyboard", "(Ljava/lang/String;I)V");
 		_hide_keyboard = p_env->GetMethodID(cls, "hideKeyboard", "()V");
 		_set_screen_orientation = p_env->GetMethodID(cls, "setScreenOrientation", "(I)V");
 		_get_system_dir = p_env->GetMethodID(cls, "getSystemDir", "(I)Ljava/lang/String;");
@@ -135,11 +135,11 @@ bool GodotIOJavaWrapper::has_vk() {
 	return (_show_keyboard != 0) && (_hide_keyboard != 0);
 }
 
-void GodotIOJavaWrapper::show_vk(const String &p_existing) {
+void GodotIOJavaWrapper::show_vk(const String &p_existing, int p_max_input_length) {
 	if (_show_keyboard) {
 		JNIEnv *env = ThreadAndroid::get_env();
 		jstring jStr = env->NewStringUTF(p_existing.utf8().get_data());
-		env->CallVoidMethod(godot_io_instance, _show_keyboard, jStr);
+		env->CallVoidMethod(godot_io_instance, _show_keyboard, jStr, p_max_input_length);
 	}
 }
 
diff --git a/platform/android/java_godot_io_wrapper.h b/platform/android/java_godot_io_wrapper.h
index 9fa6f2e469..7dfed52187 100644
--- a/platform/android/java_godot_io_wrapper.h
+++ b/platform/android/java_godot_io_wrapper.h
@@ -73,7 +73,7 @@ public:
 	int get_screen_dpi();
 	String get_unique_id();
 	bool has_vk();
-	void show_vk(const String &p_existing);
+	void show_vk(const String &p_existing, int p_max_input_length);
 	void hide_vk();
 	int get_vk_height();
 	void set_vk_height(int p_height);
diff --git a/platform/android/os_android.cpp b/platform/android/os_android.cpp
index bbea5e3699..44c5b5d6b4 100644
--- a/platform/android/os_android.cpp
+++ b/platform/android/os_android.cpp
@@ -559,10 +559,10 @@ int OS_Android::get_virtual_keyboard_height() const {
 	// return 0;
 }
 
-void OS_Android::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect) {
+void OS_Android::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect, int p_max_input_length) {
 
 	if (godot_io_java->has_vk()) {
-		godot_io_java->show_vk(p_existing_text);
+		godot_io_java->show_vk(p_existing_text, p_max_input_length);
 	} else {
 
 		ERR_PRINT("Virtual keyboard not available");
diff --git a/platform/android/os_android.h b/platform/android/os_android.h
index 1cf64a2e84..c2f9a0992f 100644
--- a/platform/android/os_android.h
+++ b/platform/android/os_android.h
@@ -158,7 +158,7 @@ public:
 	virtual bool has_touchscreen_ui_hint() const;
 
 	virtual bool has_virtual_keyboard() const;
-	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2());
+	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), int p_max_input_length = -1);
 	virtual void hide_virtual_keyboard();
 	virtual int get_virtual_keyboard_height() const;
 
diff --git a/platform/iphone/os_iphone.cpp b/platform/iphone/os_iphone.cpp
index 3e5ab7b886..7a699f9b50 100644
--- a/platform/iphone/os_iphone.cpp
+++ b/platform/iphone/os_iphone.cpp
@@ -482,7 +482,7 @@ extern Error _shell_open(String p_uri);
 extern void _set_keep_screen_on(bool p_enabled);
 extern void _vibrate();
 
-void OSIPhone::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect) {
+void OSIPhone::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect, int p_max_input_length) {
 	_show_keyboard(p_existing_text);
 };
 
diff --git a/platform/iphone/os_iphone.h b/platform/iphone/os_iphone.h
index 4668471aa9..d2d96181f5 100644
--- a/platform/iphone/os_iphone.h
+++ b/platform/iphone/os_iphone.h
@@ -165,7 +165,7 @@ public:
 	virtual bool can_draw() const;
 
 	virtual bool has_virtual_keyboard() const;
-	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2());
+	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), int p_max_input_length = -1);
 	virtual void hide_virtual_keyboard();
 	virtual int get_virtual_keyboard_height() const;
 
diff --git a/platform/uwp/os_uwp.cpp b/platform/uwp/os_uwp.cpp
index aec5da316b..d5047b53ab 100644
--- a/platform/uwp/os_uwp.cpp
+++ b/platform/uwp/os_uwp.cpp
@@ -801,7 +801,7 @@ bool OS_UWP::has_virtual_keyboard() const {
 	return UIViewSettings::GetForCurrentView()->UserInteractionMode == UserInteractionMode::Touch;
 }
 
-void OS_UWP::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect) {
+void OS_UWP::show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect, int p_max_input_length) {
 
 	InputPane ^ pane = InputPane::GetForCurrentView();
 	pane->TryShow();
diff --git a/platform/uwp/os_uwp.h b/platform/uwp/os_uwp.h
index edc63bd637..4f1668581e 100644
--- a/platform/uwp/os_uwp.h
+++ b/platform/uwp/os_uwp.h
@@ -239,7 +239,7 @@ public:
 	virtual bool has_touchscreen_ui_hint() const;
 
 	virtual bool has_virtual_keyboard() const;
-	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2());
+	virtual void show_virtual_keyboard(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), int p_max_input_length = -1);
 	virtual void hide_virtual_keyboard();
 
 	virtual Error open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path = false);
diff --git a/scene/gui/line_edit.cpp b/scene/gui/line_edit.cpp
index 0f3328dac5..7afc3b0d00 100644
--- a/scene/gui/line_edit.cpp
+++ b/scene/gui/line_edit.cpp
@@ -128,7 +128,7 @@ void LineEdit::_gui_input(Ref<InputEvent> p_event) {
 			selection.doubleclick = false;
 
 			if (OS::get_singleton()->has_virtual_keyboard())
-				OS::get_singleton()->show_virtual_keyboard(text, get_global_rect());
+				OS::get_singleton()->show_virtual_keyboard(text, get_global_rect(), max_length);
 		}
 
 		update();
@@ -913,7 +913,7 @@ void LineEdit::_notification(int p_what) {
 			OS::get_singleton()->set_ime_position(get_global_position() + cursor_pos);
 
 			if (OS::get_singleton()->has_virtual_keyboard())
-				OS::get_singleton()->show_virtual_keyboard(text, get_global_rect());
+				OS::get_singleton()->show_virtual_keyboard(text, get_global_rect(), max_length);
 
 		} break;
 		case NOTIFICATION_FOCUS_EXIT: {