WIP - [GTK4] support Clipboard

Author: jonahgraham

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-atk-gtk-4971r4.so

@@ -1,3 +1,3 @@
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-size 39168
+oid sha256:d3e710c0f50693f9912c38324a13b70b0d473fbd5e0c82a14d8799a4844b628e
+size 43408

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-awt-gtk-4971r4.so

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 14112
+oid sha256:83f2ee183e227a072fa1994d35eab37c8d70b18d9ee65abafb62d67f7b9328e8
+size 14408

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-cairo-gtk-4971r4.so

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+size 48096

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-glx-gtk-4971r4.so

@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
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-size 14352
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+size 14496

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-gtk-4971r4.so

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 version https://git-lfs.github.com/spec/v1
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-size 610344
+oid sha256:af39a1153d68fbc8b47114f0d2d47f39263a3e63b4d96c04f1cef01c500b8c98
+size 626888

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-pi3-gtk-4971r4.so

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 version https://git-lfs.github.com/spec/v1
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+size 491560

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-pi4-gtk-4971r4.so

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 version https://git-lfs.github.com/spec/v1
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-size 399904
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+size 437320

binaries/org.eclipse.swt.gtk.linux.x86_64/libswt-webkit-gtk-4971r4.so

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 version https://git-lfs.github.com/spec/v1
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-size 59344
+oid sha256:473ec7b9c8a932279774704b90f8330f7ef389e5ac78691207908916578d057a
+size 59496

bundles/org.eclipse.swt.tools/JNI Generation/org/eclipse/swt/tools/internal/ASTType.java

@@ -148,7 +148,10 @@ public String getTypeSignature2() {
 	if (name.equals("Ljava/lang/String;")) return "jstring";
 	if (name.equals("Ljava/lang/Class;")) return "jclass";
 	if (isArray()) {
-		return getComponentType().getTypeSignature2() + "Array";
+		if (getComponentType().isPrimitive()) {
+			return getComponentType().getTypeSignature2() + "Array";
+		}
+		return "jobjectArray";
 	}
 	return "jobject";
 }

bundles/org.eclipse.swt.tools/JNI Generation/org/eclipse/swt/tools/internal/NativesGenerator.java

@@ -77,9 +77,57 @@ public void generate(JNIClass clazz) {
 	sort(methods);
 	generateNativeMacro(clazz);
 	generateWarningSettings();
+	generateStaticMethods();
 	generateExcludes(methods);
 	generate(methods);
 }
+private void generateStaticMethods() {
+	if (!getOutputName().equals("gtk4")) {
+		return;
+	}
+	
+	outputln("""
+static char **
+getArrayOfStringsUTF(JNIEnv *env, jobjectArray javaArray) {
+    jsize length = (*env)->GetArrayLength(env, javaArray);
+
+    char **cStrings = (char **)malloc((length + 1) * sizeof(char*));
+    if (!cStrings) {
+		return NULL;
+	}
+
+    for (jsize i = 0; i < length; i++) {
+        jstring jstr = (jstring)(*env)->GetObjectArrayElement(env, javaArray, i);
+        if (jstr) {
+	        const char *utfStr = (*env)->GetStringUTFChars(env, jstr, 0);
+	
+	        cStrings[i] = strdup(utfStr);
+	
+	        (*env)->ReleaseStringUTFChars(env, jstr, utfStr);
+	        (*env)->DeleteLocalRef(env, jstr);
+        } else {
+	        cStrings[i] = NULL;
+        }
+    }
+    
+    cStrings[length] = NULL;
+    return cStrings;
+}
+
+static void
+releaseArrayOfStringsUTF(JNIEnv *env, jobjectArray javaArray, char **cStrings) {
+    jsize length = (*env)->GetArrayLength(env, javaArray);
+
+    for (jsize i = 0; i < length; i++) {
+		if (cStrings[i]) {
+			free(cStrings[i]);
+		}
+    }
+    free(cStrings);
+}
+	
+		""");
+}
 
 public void generate(JNIMethod[] methods) {
 	sort(methods);
@@ -299,6 +347,14 @@ boolean generateGetParameter(JNIParameter param, boolean critical, int indent) {
 				output(iStr);
 				output(", NULL)");
 			}
+		} else if (componentType.isType("java.lang.String")) {
+			if (param.getFlag(FLAG_UNICODE)) {
+				throw new Error("not done");
+			}
+			
+			output("getArrayOfStringsUTF(env, arg");
+			output(iStr);
+			output(")");
 		} else {
 			throw new Error("not done");
 		}
@@ -381,6 +437,16 @@ void generateSetParameter(JNIParameter param, boolean critical) {
 				output("0");
 			}
 			output(");");
+		} else if (componentType.isType("java.lang.String")) {
+			if (param.getFlag(FLAG_UNICODE)) {
+				throw new Error("not done");
+			}
+			
+			output("releaseArrayOfStringsUTF(env, arg");
+			output(iStr);
+			output(", lparg");
+			output(iStr);
+			output(");");
 		} else {
 			throw new Error("not done");
 		}
@@ -452,6 +518,12 @@ boolean generateLocalVars(JNIParameter[] params, JNIType returnType) {
 				output(componentType.getTypeSignature2());
 				output(" *lparg" + i);
 				output("=NULL;");
+			} else if (componentType.isType("java.lang.String")) {
+				if (param.getFlag(FLAG_UNICODE)) {
+					output("jchar **lparg" + i + "=NULL");				
+				} else {
+					output("char **lparg" + i+ "=NULL");
+				}
 			} else {
 				throw new Error("not done");
 			}