add src/ui folder for both Android and GWT UIs

src/ui/android/.classpath

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+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="src" path="gen"/>
+	<classpathentry kind="con" path="com.android.ide.eclipse.adt.ANDROID_FRAMEWORK"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

src/ui/android/.project

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+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>GF-Android</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

src/ui/android/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+      package="org.grammaticalframework.fridge"
+      android:versionCode="1"
+      android:versionName="1.0">
+    <application android:icon="@drawable/icon" android:label="@string/app_name">
+        <activity android:name=".FridgeMagnets"
+                  android:label="@string/app_name">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+
+    </application>
+    <uses-sdk android:minSdkVersion="2" />
+
+</manifest> 

src/ui/android/default.properties

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+# This file is automatically generated by Android Tools.
+# Do not modify this file -- YOUR CHANGES WILL BE ERASED!
+# 
+# This file must be checked in Version Control Systems.
+# 
+# To customize properties used by the Ant build system use,
+# "build.properties", and override values to adapt the script to your
+# project structure.
+
+# Indicates whether an apk should be generated for each density.
+split.density=false
+# Project target.
+target=android-4

src/ui/android/res/layout/main.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+	android:id="@+id/main_view"
+    android:orientation="vertical"
+    android:layout_width="fill_parent"
+    android:layout_height="fill_parent"
+    android:background="@drawable/brushed_metal"
+    >
+	<se.fnord.android.layout.PredicateLayout
+    	android:id="@+id/magnets_sentence"
+    	android:layout_width="wrap_content" 
+   		android:layout_height="wrap_content"
+   		android:padding="5dip"/>
+
+	<View 
+		android:layout_height="8dip"
+		android:layout_width="fill_parent"
+        android:background="#FF909090"/>
+
+	<se.fnord.android.layout.PredicateLayout
+    	android:id="@+id/magnets_bag"
+    	android:layout_width="fill_parent" 
+    	android:layout_height="wrap_content"
+    	android:padding="5dip"/>
+</LinearLayout>

src/ui/android/res/values/strings.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="hello">Hello World, FridgeMagnets!</string>
+    <string name="app_name">Fridge Magnets</string>
+</resources>

src/ui/android/src/org/grammaticalframework/fridge/FridgeMagnets.java

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+package org.grammaticalframework.fridge;
+
+import java.util.Arrays;
+
+import android.os.*;
+import android.app.*;
+import android.content.*;
+import android.text.*;
+import android.view.*;
+import android.view.inputmethod.*;
+import android.widget.*;
+import android.graphics.*;
+import se.fnord.android.layout.*;
+
+public class FridgeMagnets extends Activity {
+    /** Called when the activity is first created. */
+	String[] words = {"hello","buy","I","you","have","please","where",
+			          "how","go","Gothenburg","London","rakia","wine",
+			          "whisky","man","woman","boy","girl","to"};
+
+	private Controller controller = new Controller();
+	private EditText searchBox = null;
+	
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.main);
+        
+        Arrays.sort(words);
+
+        refreshBagOfWords(null);
+
+        View main = findViewById(R.id.main_view);
+        main.setFocusableInTouchMode(true);
+        main.setOnKeyListener(controller);
+    }
+
+	private void applyMagnetStyles(TextView view) {
+        view.setTextColor(Color.BLACK);
+        view.setBackgroundColor(Color.WHITE);
+        view.setSingleLine(true);
+        view.setPadding(2, 2, 2, 2);
+        view.setClickable(true);
+	}
+	
+	private void refreshBagOfWords(String prefix) {
+        PredicateLayout l = (PredicateLayout) findViewById(R.id.magnets_bag);
+        
+        l.removeAllViews();
+        
+        for (int i = 0; i < words.length; i++) {
+        	if (prefix != null && !words[i].startsWith(prefix))
+        		continue;
+
+        	TextView t = new TextView(this);
+            t.setText(words[i]);
+            t.setOnTouchListener(controller);
+        	applyMagnetStyles(t);
+            l.addView(t, new PredicateLayout.LayoutParams(3, 3));
+        }		
+	}
+
+	private void addWord(String word) {
+		PredicateLayout l = (PredicateLayout) findViewById(R.id.magnets_sentence);
+		
+		TextView t = new TextView(this);
+		t.setText(word);
+		applyMagnetStyles(t);
+		l.addView(t, new PredicateLayout.LayoutParams(3, 3));
+	}
+
+    private void showSearchBox() {
+    	if (searchBox != null)
+    		return;
+    	
+		PredicateLayout l = (PredicateLayout) findViewById(R.id.magnets_sentence);
+
+		EditText edit = new EditText(this);
+		edit.setInputType(InputType.TYPE_CLASS_TEXT |
+		                  InputType.TYPE_TEXT_FLAG_AUTO_COMPLETE);
+		edit.addTextChangedListener(controller);
+		edit.setOnKeyListener(controller);
+		applyMagnetStyles(edit);
+
+		l.addView(edit, new PredicateLayout.LayoutParams(
+								ViewGroup.LayoutParams.WRAP_CONTENT,
+								ViewGroup.LayoutParams.WRAP_CONTENT,
+								3, 3));
+		edit.requestFocus();
+		InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+		imm.showSoftInput(edit, 0);
+		
+		searchBox = edit;
+	}
+
+	private void hideSearchBox() {
+    	if (searchBox == null)
+    		return;
+
+		InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
+		imm.hideSoftInputFromWindow(searchBox.getWindowToken(), 0);
+
+		PredicateLayout l = (PredicateLayout) findViewById(R.id.magnets_sentence);		
+		l.removeView(searchBox);
+
+		refreshBagOfWords(null);
+
+		searchBox = null;
+	}
+
+	private class Controller implements View.OnKeyListener, View.OnTouchListener, TextWatcher {
+    	
+    	@Override
+    	public boolean onKey(View view, int keyCode, KeyEvent event) {
+    		if (event.getAction() == KeyEvent.ACTION_DOWN) {    			
+    			if (searchBox == null && keyCode == KeyEvent.KEYCODE_SEARCH) {
+    				showSearchBox();
+    				return true;
+    			} else if (searchBox != null && keyCode == KeyEvent.KEYCODE_SEARCH) {
+    				hideSearchBox();
+    				return true;
+    			}
+    		}
+        	return false;
+        }
+    		
+    	@Override
+    	public boolean onTouch(View view, MotionEvent event) {
+			if (event.getAction() == MotionEvent.ACTION_UP) {
+				hideSearchBox();
+				addWord(((TextView) view).getText().toString());
+	            return true;
+			}
+            
+    		return false;
+    	}
+
+		@Override
+		public void afterTextChanged(Editable arg0) {
+		}
+
+		@Override
+		public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
+		}
+
+		@Override
+		public void onTextChanged(CharSequence text, int arg1, int arg2, int arg3) {
+			refreshBagOfWords(text.toString());
+		}
+    }
+}

src/ui/android/src/se/fnord/android/layout/PredicateLayout.java

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+package se.fnord.android.layout;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.View;
+import android.view.ViewGroup;
+
+/**
+ * ViewGroup that arranges child views in a similar way to text, with them laid
+ * out one line at a time and "wrapping" to the next line as needed.
+ * 
+ * Code licensed under CC-by-SA
+ *  
+ * @author Henrik Gustafsson
+ * @see http://stackoverflow.com/questions/549451/line-breaking-widget-layout-for-android
+ * @license http://creativecommons.org/licenses/by-sa/2.5/
+ *
+ */
+public class PredicateLayout extends ViewGroup {
+
+    private int line_height;
+
+    public static class LayoutParams extends ViewGroup.LayoutParams {
+        public final int horizontal_spacing;
+        public final int vertical_spacing;
+
+        /**
+         * @param horizontal_spacing Pixels between items, horizontally
+         * @param vertical_spacing Pixels between items, vertically
+         */
+        public LayoutParams(int horizontal_spacing, int vertical_spacing) {
+            this(0, 0, horizontal_spacing, vertical_spacing);
+        }
+
+        /**
+         * @param width 
+         * @param height
+         * @param horizontal_spacing Pixels between items, horizontally
+         * @param vertical_spacing Pixels between items, vertically
+         */
+        public LayoutParams(int width, int height, int horizontal_spacing, int vertical_spacing) {
+            super(width, height);
+            this.horizontal_spacing = horizontal_spacing;
+            this.vertical_spacing = vertical_spacing;     
+        }
+    }
+
+    public PredicateLayout(Context context) {
+        super(context);
+    }
+
+    public PredicateLayout(Context context, AttributeSet attrs){
+        super(context, attrs);
+    }
+
+    @Override
+    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
+        assert(MeasureSpec.getMode(widthMeasureSpec) != MeasureSpec.UNSPECIFIED);
+
+        final int width = MeasureSpec.getSize(widthMeasureSpec) - getPaddingLeft() - getPaddingRight();
+        int height = MeasureSpec.getSize(heightMeasureSpec) - getPaddingTop() - getPaddingBottom();
+        final int count = getChildCount();
+        int line_height = 0;
+
+        int xpos = getPaddingLeft();
+        int ypos = getPaddingTop();
+
+        for (int i = 0; i < count; i++) {
+            final View child = getChildAt(i);
+            if (child.getVisibility() != GONE) {
+                final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+                child.measure(
+                        MeasureSpec.makeMeasureSpec(width, MeasureSpec.AT_MOST),
+                        MeasureSpec.makeMeasureSpec(height, MeasureSpec.AT_MOST));
+
+                final int childw = child.getMeasuredWidth();
+                line_height = Math.max(line_height, child.getMeasuredHeight() + lp.vertical_spacing);
+
+                if (xpos + childw > width) {
+                    xpos = getPaddingLeft();
+                    ypos += line_height;
+                }
+
+                xpos += childw + lp.horizontal_spacing;
+            }
+        }
+        this.line_height = line_height;
+
+        if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.UNSPECIFIED){
+            height = ypos + line_height;
+
+        } else if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.AT_MOST){
+            if (ypos + line_height < height){
+                height = ypos + line_height;
+            }
+        }
+        setMeasuredDimension(width, height);
+    }
+
+    @Override
+    protected ViewGroup.LayoutParams generateDefaultLayoutParams() {
+        return new LayoutParams(1, 1); // default of 1px spacing
+    }
+
+    @Override
+    protected boolean checkLayoutParams(ViewGroup.LayoutParams p) {
+        if (p instanceof LayoutParams)
+            return true;
+        return false;
+    }
+
+    @Override
+    protected void onLayout(boolean changed, int l, int t, int r, int b) {
+        final int count = getChildCount();
+        final int width = r - l;
+        int xpos = getPaddingLeft();
+        int ypos = getPaddingTop();
+
+        for (int i = 0; i < count; i++) {
+            final View child = getChildAt(i);
+            if (child.getVisibility() != GONE) {
+                final int childw = child.getMeasuredWidth();
+                final int childh = child.getMeasuredHeight();
+                final LayoutParams lp = (LayoutParams) child.getLayoutParams();
+                if (xpos + childw > width) {
+                    xpos = getPaddingLeft();
+                    ypos += line_height;
+                }
+                child.layout(xpos, ypos, xpos + childw, ypos + childh);
+                xpos += childw + lp.horizontal_spacing;
+            }
+        }
+    }
+}