From d1f0716fcb72c1ef32b52c12615232af3a09c092 Mon Sep 17 00:00:00 2001
From: Macocian Radu <rmacocian@yahoo.com>
Date: Mon, 23 Dec 2019 22:25:04 +0200
Subject: [PATCH] initial parser working as intended

---
 AWT startup.iml                        |   1 +
 resources/company.xml                  |   4 +
 src/Main.java                          |  44 +++-----
 src/converters/BooleanConverter.java   |   9 ++
 src/converters/ColorConverter.java     |  10 ++
 src/converters/Converter.java          |  31 ++++++
 src/converters/ConverterInterface.java |   5 +
 src/converters/DoubleConverter.java    |   9 ++
 src/converters/FloatConverter.java     |   9 ++
 src/converters/IntegerConverter.java   |   9 ++
 src/converters/StringConverter.java    |   9 ++
 src/{ => guiTree}/Button.java          |   6 +-
 src/{ => guiTree}/CustomFrame.java     |   2 +
 src/{ => guiTree}/Visual.java          |  51 +++++----
 src/{ => guiTree}/Window.java          |  11 +-
 src/parser/XAMLParser.java             | 141 +++++++++++++++++++++++++
 16 files changed, 297 insertions(+), 54 deletions(-)
 create mode 100644 resources/company.xml
 create mode 100644 src/converters/BooleanConverter.java
 create mode 100644 src/converters/ColorConverter.java
 create mode 100644 src/converters/Converter.java
 create mode 100644 src/converters/ConverterInterface.java
 create mode 100644 src/converters/DoubleConverter.java
 create mode 100644 src/converters/FloatConverter.java
 create mode 100644 src/converters/IntegerConverter.java
 create mode 100644 src/converters/StringConverter.java
 rename src/{ => guiTree}/Button.java (78%)
 rename src/{ => guiTree}/CustomFrame.java (96%)
 rename src/{ => guiTree}/Visual.java (85%)
 rename src/{ => guiTree}/Window.java (85%)
 create mode 100644 src/parser/XAMLParser.java

diff --git a/AWT startup.iml b/AWT startup.iml
index c90834f..8433b9d 100644
--- a/AWT startup.iml	
+++ b/AWT startup.iml	
@@ -4,6 +4,7 @@
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
diff --git a/resources/company.xml b/resources/company.xml
new file mode 100644
index 0000000..db75c38
--- /dev/null
+++ b/resources/company.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0"?>
+<Window Visible="true" Size="640, 480" PositionRelativeTo="null">
+    <Button BackgroundColor="#990000"/>
+</Window>
\ No newline at end of file
diff --git a/src/Main.java b/src/Main.java
index 406768d..09fb9ad 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,38 +1,22 @@
+import guiTree.Window;
+import parser.XAMLParser;
+
 import java.awt.event.WindowAdapter;
 import java.awt.event.WindowEvent;
 
 public class Main {
     public static void main(String[] args) {
-        Window win = new Window();
-        win.setVisible(true);
-        win.setSize(640, 480);
-        win.setPositionRelativeTo(null);
-        win.addWindowListener(new WindowAdapter() {
-            @Override
-            public void windowClosing(WindowEvent e) {
-                win.dispose();
-            }
-        });
-
-        Button button = new Button();
-        win.addVisual(button);
-        int x = 20;
-        int y = 20;
-        while(true){
-            if(x > win.getWidth()){
-                x = 0;
-                y+=20;
-            }
-            if(y > win.getHeight()){
-                y = 0;
-            }
-            button.setLocation(x, y);
-            x+=10;
-            try {
-                Thread.sleep(10);
-            } catch (InterruptedException e) {
-                e.printStackTrace();
-            }
+        try{
+            Window window = XAMLParser.parse("company.xml");
+            assert window != null;
+            window.addWindowListener(new WindowAdapter() {
+                @Override
+                public void windowClosing(WindowEvent e) {
+                    window.dispose();
+                }
+            });
+        }catch (Exception e){
+            e.printStackTrace();
         }
     }
 }
diff --git a/src/converters/BooleanConverter.java b/src/converters/BooleanConverter.java
new file mode 100644
index 0000000..dabd8fe
--- /dev/null
+++ b/src/converters/BooleanConverter.java
@@ -0,0 +1,9 @@
+package converters;
+
+public class BooleanConverter implements ConverterInterface<Boolean> {
+
+    @Override
+    public Boolean convert(String content) {
+        return Boolean.valueOf(content);
+    }
+}
diff --git a/src/converters/ColorConverter.java b/src/converters/ColorConverter.java
new file mode 100644
index 0000000..71a7f7c
--- /dev/null
+++ b/src/converters/ColorConverter.java
@@ -0,0 +1,10 @@
+package converters;
+
+import java.awt.*;
+
+public class ColorConverter implements ConverterInterface<Color> {
+    @Override
+    public Color convert(String content) {
+        return Color.decode(content);
+    }
+}
diff --git a/src/converters/Converter.java b/src/converters/Converter.java
new file mode 100644
index 0000000..9a1fe1b
--- /dev/null
+++ b/src/converters/Converter.java
@@ -0,0 +1,31 @@
+package converters;
+
+import com.sun.jdi.InvalidTypeException;
+
+import java.awt.*;
+import java.util.HashMap;
+
+public class Converter {
+    private HashMap<Class<?>, ConverterInterface<?>> converterTable;
+
+    public Converter(){
+        this.converterTable = new HashMap<>();
+        this.converterTable.put(Integer.class, new IntegerConverter());
+        this.converterTable.put(Float.class, new FloatConverter());
+        this.converterTable.put(Double.class, new DoubleConverter());
+        this.converterTable.put(String.class, new StringConverter());
+        this.converterTable.put(Boolean.class, new BooleanConverter());
+        this.converterTable.put(Integer.TYPE, new IntegerConverter());
+        this.converterTable.put(Float.TYPE, new FloatConverter());
+        this.converterTable.put(Double.TYPE, new DoubleConverter());
+        this.converterTable.put(Boolean.TYPE, new BooleanConverter());
+        this.converterTable.put(Color.class, new ColorConverter());
+    }
+
+    public Object objectCreatorFactory (Class<?> type, String content) throws InvalidTypeException {
+        if(this.converterTable.containsKey(type)) {
+            return this.converterTable.get(type).convert(content);
+        }
+        throw new InvalidTypeException();
+    }
+}
diff --git a/src/converters/ConverterInterface.java b/src/converters/ConverterInterface.java
new file mode 100644
index 0000000..6a942d7
--- /dev/null
+++ b/src/converters/ConverterInterface.java
@@ -0,0 +1,5 @@
+package converters;
+
+public interface ConverterInterface<T> {
+    T convert(String content);
+}
diff --git a/src/converters/DoubleConverter.java b/src/converters/DoubleConverter.java
new file mode 100644
index 0000000..c91d8dc
--- /dev/null
+++ b/src/converters/DoubleConverter.java
@@ -0,0 +1,9 @@
+package converters;
+
+public class DoubleConverter implements ConverterInterface<Double>{
+
+    @Override
+    public Double convert(String content) {
+        return Double.parseDouble(content);
+    }
+}
diff --git a/src/converters/FloatConverter.java b/src/converters/FloatConverter.java
new file mode 100644
index 0000000..e3fc97d
--- /dev/null
+++ b/src/converters/FloatConverter.java
@@ -0,0 +1,9 @@
+package converters;
+
+public class FloatConverter implements ConverterInterface<Float> {
+
+    @Override
+    public Float convert(String content) {
+        return Float.parseFloat(content);
+    }
+}
diff --git a/src/converters/IntegerConverter.java b/src/converters/IntegerConverter.java
new file mode 100644
index 0000000..fddefbb
--- /dev/null
+++ b/src/converters/IntegerConverter.java
@@ -0,0 +1,9 @@
+package converters;
+
+public class IntegerConverter implements ConverterInterface<Integer> {
+
+    @Override
+    public Integer convert(String content) {
+        return Integer.parseInt(content);
+    }
+}
diff --git a/src/converters/StringConverter.java b/src/converters/StringConverter.java
new file mode 100644
index 0000000..66a259b
--- /dev/null
+++ b/src/converters/StringConverter.java
@@ -0,0 +1,9 @@
+package converters;
+
+public class StringConverter implements ConverterInterface<String> {
+
+    @Override
+    public String convert(String content) {
+        return content;
+    }
+}
diff --git a/src/Button.java b/src/guiTree/Button.java
similarity index 78%
rename from src/Button.java
rename to src/guiTree/Button.java
index 0d9ea49..434d763 100644
--- a/src/Button.java
+++ b/src/guiTree/Button.java
@@ -1,3 +1,7 @@
+package guiTree;
+
+import guiTree.Visual;
+
 import java.awt.*;
 import java.awt.image.BufferedImage;
 
@@ -12,7 +16,7 @@ public class Button extends Visual {
     public void paint(BufferedImage imageBuffer)
     {
         Graphics g = imageBuffer.getGraphics();
-        g.setColor(Color.BLUE);
+        g.setColor(this.getBackgroundColor());
         g.fillRect(0, 0, getWidth(), getHeight());
     }
 }
diff --git a/src/CustomFrame.java b/src/guiTree/CustomFrame.java
similarity index 96%
rename from src/CustomFrame.java
rename to src/guiTree/CustomFrame.java
index 6a6bfb5..15d1a74 100644
--- a/src/CustomFrame.java
+++ b/src/guiTree/CustomFrame.java
@@ -1,3 +1,5 @@
+package guiTree;
+
 import java.awt.*;
 import java.awt.image.BufferedImage;
 
diff --git a/src/Visual.java b/src/guiTree/Visual.java
similarity index 85%
rename from src/Visual.java
rename to src/guiTree/Visual.java
index 5fac94b..0a1fa53 100644
--- a/src/Visual.java
+++ b/src/guiTree/Visual.java
@@ -1,3 +1,5 @@
+package guiTree;
+
 import java.awt.*;
 import java.awt.image.BufferedImage;
 import java.util.ArrayList;
@@ -16,13 +18,14 @@ public class Visual {
     /*--------------------------------------------------------------------
                         Attributes
     ---------------------------------------------------------------------*/
-    private int width;
-    private int height;
-    private int locationX;
-    private int locationY;
+    private String name;
+    private Integer width;
+    private Integer height;
+    private Integer locationX;
+    private Integer locationY;
     private Color backgroundColor;
     private Color foregroundColor;
-    private Boolean valid;
+    private Boolean active;
 
 
     /*--------------------------------------------------------------------
@@ -33,13 +36,23 @@ public class Visual {
         this.parent = null;
         this.backgroundColor = Color.WHITE;
         this.foregroundColor = Color.BLACK;
-        valid = false;
+
+        this.active = this instanceof Window;
     }
 
 
     /*--------------------------------------------------------------------
                     Attributes Methods
     ---------------------------------------------------------------------*/
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
     public int getWidth()
     {
         return this.width;
@@ -50,13 +63,12 @@ public class Visual {
         return this.height;
     }
 
-    public void setSize(int width, int height){
+    public void setSize(Integer width, Integer height){
         this.width = width;
         this.height = height;
 
         initializeImageBuffer(width, height);
 
-        this.valid = false;
         this.revalidate();
     }
 
@@ -68,10 +80,9 @@ public class Visual {
         return this.locationY;
     }
 
-    public void setLocation(int x, int y){
+    public void setLocation(Integer x, Integer y){
         this.locationX = x;
         this.locationY = y;
-        this.valid = false;
         this.revalidate();
     }
 
@@ -81,7 +92,6 @@ public class Visual {
 
     public void setBackgroundColor(Color backgroundColor) {
         this.backgroundColor = backgroundColor;
-        this.valid = false;
         this.revalidate();
     }
 
@@ -91,7 +101,6 @@ public class Visual {
 
     public void setForegroundColor(Color foregroundColor) {
         this.foregroundColor = foregroundColor;
-        this.valid = false;
         this.revalidate();
     }
 
@@ -101,8 +110,8 @@ public class Visual {
     }
 
     private void calculateInitialLocation(){
-        this.locationX = 200;
-        this.locationY = 200;
+        this.locationX = 20;
+        this.locationY = 50;
     }
 
 
@@ -116,9 +125,9 @@ public class Visual {
         child.calculateInitialLocation();
         child.calculateInitialSize();
         child.imageBuffer = new BufferedImage(child.getWidth(), child.getHeight(), BufferedImage.TYPE_3BYTE_BGR);
-        child.valid = false;
 
-        this.revalidate();
+        child.active = true;
+        child.revalidate();
     }
 
     private void setParent(Visual parent)
@@ -142,16 +151,14 @@ public class Visual {
     }
 
     public void revalidate() {
+        if(!this.active){
+            return;
+        }
         initializeImageBuffer(width, height);
         this.paint(imageBuffer);
         for(Visual v:children){
-            if(!v.valid){
-                v.paint(v.imageBuffer);
-            }
             this.imageBuffer.getGraphics().drawImage(v.imageBuffer, v.locationX, v.locationY, null);
-            v.valid = true;
         }
-        this.valid = true;
         if(!(this instanceof Window)){
             this.parent.revalidate();
         }
@@ -169,7 +176,7 @@ public class Visual {
                             Helper Methods
     ---------------------------------------------------------------------*/
 
-    private void initializeImageBuffer(int width, int height){
+    private void initializeImageBuffer(Integer width, Integer height){
         this.imageBuffer = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
         this.imageBuffer.getGraphics().setColor(backgroundColor);
         this.imageBuffer.getGraphics().fillRect(0, 0, width, height);
diff --git a/src/Window.java b/src/guiTree/Window.java
similarity index 85%
rename from src/Window.java
rename to src/guiTree/Window.java
index fba4f0e..a4e2ddf 100644
--- a/src/Window.java
+++ b/src/guiTree/Window.java
@@ -1,3 +1,7 @@
+package guiTree;
+
+import guiTree.Visual;
+
 import java.awt.*;
 import java.awt.event.WindowListener;
 import java.awt.event.WindowStateListener;
@@ -17,7 +21,7 @@ public class Window extends Visual {
     }
 
     @Override
-    public void setSize(int width, int height)
+    public void setSize(Integer width, Integer height)
     {
         this.frame.setSize(width, height);
         super.setSize(width, height);
@@ -26,6 +30,7 @@ public class Window extends Visual {
 
     public void setFrameImageBuffer(BufferedImage imageBuffer){
         this.frame.setImageBuffer(imageBuffer);
+        this.frame.repaint();
     }
 
     public void setSize(Dimension dimension) {
@@ -55,4 +60,8 @@ public class Window extends Visual {
     public void setPositionRelativeTo(Component c){
         frame.setLocationRelativeTo(c);
     }
+
+    public void setPositionRelativeTo(){
+        frame.setLocationRelativeTo(null);
+    }
 }
diff --git a/src/parser/XAMLParser.java b/src/parser/XAMLParser.java
new file mode 100644
index 0000000..2b5a9b9
--- /dev/null
+++ b/src/parser/XAMLParser.java
@@ -0,0 +1,141 @@
+package parser;
+
+import com.sun.jdi.InvalidTypeException;
+import converters.Converter;
+import guiTree.Visual;
+import guiTree.Window;
+import org.w3c.dom.*;
+
+import javax.xml.parsers.*;
+import java.io.*;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.ArrayList;
+import java.util.List;
+
+public class XAMLParser {
+    private final static String packageName = "guiTree.";
+    private static Converter valueConverter = new Converter();
+
+    private static void setAttributes(Object object, NamedNodeMap attributeList){
+        for(int i = 0; i < attributeList.getLength(); i++){
+            Node attribute = attributeList.item(i);
+            String methodName = "set";
+            methodName = methodName.concat(attribute.getNodeName());
+            List<Object> parameterList = convertStringToPrimitives(object, attribute.getNodeValue(), methodName);
+            Method method = getMethod(object, methodName, parameterList);
+            try {
+                assert method != null;
+                method.invoke(object, parameterList.toArray());
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+    private static Method getMethod(Object object, String methodName, List<Object> parameterList){
+        Method method;
+        Class<?>[] args = new Class[parameterList.size()];
+        for(Object o: parameterList){
+            try {
+                args[parameterList.indexOf(o)] = o.getClass();
+            } catch (NullPointerException e) {
+                System.err.println("Null Pointer Exception: " + methodName + " with parameters + " + parameterList.toString());
+            }
+        }
+        try {
+            method = object.getClass().getMethod(methodName, args);
+            return method;
+        } catch (NoSuchMethodException e) {
+            System.err.println("Method does not exist: " + methodName + " with parameters + " + parameterList.toString());
+            e.printStackTrace();
+        }
+        return null;
+    }
+
+    private static List<Method> getMethodsFromName(Object object, String methodName){
+       Method[] methods = object.getClass().getMethods();
+       List<Method> returnMethods = new ArrayList<>();
+       for(Method method: methods){
+           if(method.getName().equals(methodName)){
+               returnMethods.add(method);
+           }
+       }
+       return returnMethods;
+    }
+
+    public static Window parse(String filepath) throws Exception {
+        Object rootObject;
+        FileInputStream fileIS = new FileInputStream(new File("resources/" + filepath));
+        DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
+        DocumentBuilder builder = builderFactory.newDocumentBuilder();
+        Document xmlDocument = builder.parse(fileIS);
+
+        xmlDocument.normalize();
+
+        Element rootNode = xmlDocument.getDocumentElement();
+
+        rootObject = parseNode(rootNode);
+
+        if(rootObject instanceof Window) {
+            return (Window) rootObject;
+        }
+        return null;
+    }
+
+    private static List<Object> convertStringToPrimitives(Object object, String value, String methodName){
+        List<Object> primitiveAttributes = new ArrayList<>();
+        List<String> values = new ArrayList<>();
+
+        value = value.replaceAll(" ", "");
+        while (value.contains(",")) {
+            values.add(value.substring(0, value.indexOf(',')));
+            value = value.substring(value.indexOf(',') + 1);
+        }
+        values.add(value);
+        List<Method> methods = getMethodsFromName(object, methodName);
+        for(Method method: methods){
+            Class<?>[] types = method.getParameterTypes();
+            for(int i = 0; i < types.length; i++){
+                try{
+                    primitiveAttributes.add(valueConverter.objectCreatorFactory(types[i], values.get(i)));
+                } catch (InvalidTypeException | NumberFormatException e){
+                    primitiveAttributes.clear();
+                    break;
+                }
+            }
+            if(primitiveAttributes.size() == types.length){
+                return primitiveAttributes;
+            }
+        }
+        return null;
+    }
+
+    private static Object parseNode(Node parentNode)throws Exception{
+        Class<?> parentClass = Class.forName(packageName.concat(parentNode.getNodeName()));
+        Object parentObject = parentClass.getDeclaredConstructor().newInstance();
+
+        setAttributes(parentObject, parentNode.getAttributes());
+
+        NodeList childList = parentNode.getChildNodes();
+
+        for(int index = 0; index < childList.getLength(); index++){
+            Node childNode = childList.item(index);
+
+            if(childNode.getNodeType() == Node.ELEMENT_NODE) {
+
+                Object childObject = parseNode(childNode);
+
+                if(parentObject instanceof Visual && childObject instanceof Visual) {
+                    addVisual((Visual) parentObject, (Visual) childObject);
+                }
+                System.out.println("\nCurrent Element :" + childNode.getNodeName());
+            }
+        }
+        return parentObject;
+    }
+
+    private static void addVisual(Visual parentObject, Visual childObject){
+        parentObject.addVisual(childObject);
+    }
+}