refactor source tree organization, switch to meson

src/api-impl/android/view/ViewGroup.java

@@ -0,0 +1,102 @@
+package android.view;
+
+import android.util.AttributeSet;
+import android.content.Context;
+
+import java.util.ArrayList;
+
+public class ViewGroup extends View implements ViewParent, ViewManager {
+	public int id;
+	public ArrayList<View> children;
+
+	public ViewGroup() {
+		children = new ArrayList<View>();
+	}
+
+	public ViewGroup(Context context) {
+		super(context);
+
+		children = new ArrayList<View>();
+	}
+
+	public ViewGroup(AttributeSet attrs) {
+		super(attrs);
+
+		children = new ArrayList<View>();
+	}
+
+	public ViewGroup(int _id) { // FIXME
+		children = new ArrayList<View>();
+
+		id = _id;
+	}
+
+	public void addView(View child) {
+		addView(child, -1, null);
+	}
+
+	public void addView(View child, int index) {
+		addView(child, index, null);
+	}
+
+	public void addView(View child, LayoutParams params) {
+		addView(child, -1, params);
+	}
+
+	public void addView(View child, int width, int height) {
+		addView(child, new LayoutParams(width, height));
+	}
+
+	public native void addView(View child, int index, LayoutParams params);
+
+    public native void removeView(View view);/* {
+		System.out.println("NOT_IMPLEMENTED: ViewGroup.removeView: Gtk4 doesn't have a generic function for removing a child of GtkView, so you must override this function in the actual widget's class");
+	}*/
+	public native void removeAllViews();/* {
+		System.out.println("NOT_IMPLEMENTED: ViewGroup.removeAllViews: Gtk4 doesn't have a generic function for removing a child of GtkView, so you must override this function in the actual widget's class");
+		new Exception().printStackTrace();
+	}*/
+
+	public View getChildAt(int index) {
+		return children.get(index);
+	}
+
+    public void updateViewLayout(View view, ViewGroup.LayoutParams params) {}
+
+	public LayoutParams generateLayoutParams(AttributeSet attrs) {
+		return new LayoutParams(/*getContext(), attrs*/);
+	}
+
+	public static class LayoutParams {
+		public static final int FILL_PARENT = -1;
+		public static final int MATCH_PARENT = -1;
+		public static final int WRAP_CONTENT = -2;
+
+		public int width = 0;
+		public int height = 0;
+		public float weight = 1;
+		public int gravity = -1;
+
+		public LayoutParams() {
+			//FIXME
+		}
+
+		public LayoutParams(int width, int height) {
+			this.width = width;
+			this.height = height;
+		}
+
+		public LayoutParams(int width, int height, float weight) {
+			this.width = width;
+			this.height = height;
+			this.weight = weight;
+		}
+
+		public void setMargins(int left, int top, int right, int bottom) {}
+
+		/**
+		 * Used to animate layouts.
+		 */
+//		public LayoutAnimationController.AnimationParameters layoutAnimationParameters;
+	}
+}