Add mechanism for synchronously pulling getter block values.

app/src/main/java/com/codigoparallevar/minicards/parts/ProgramakerCustomBlockPart.java

@@ -370,10 +370,10 @@ public class ProgramakerCustomBlockPart implements Part {
         }
     }
 
-    private void runBlockOperation() {
+    private ProgramakerFunctionCallResult runBlockOperation() {
         if (!this.active) {
             Log.w(LogTag, "Trying to run inactive block function=" + this._block.getFunction_name());
-            return;
+            return null;
         }
 
         ProgramakerApi api = this._partGrid.getApi();
@@ -386,6 +386,11 @@ public class ProgramakerCustomBlockPart implements Part {
                 continue;
             }
 
+            Object queriedValue = entry.item2.query(lastValues[index]);
+            if (queriedValue != null) {
+                lastValues[index] = queriedValue;
+            }
+
             if (lastValues[index] == null) {
                 arguments.add(null); // TODO: Get default value from block definition
             }
@@ -398,6 +403,8 @@ public class ProgramakerCustomBlockPart implements Part {
         Log.i(LogTag, "Execution result="+result.getResult());
 
         onExecutionCompleted(result);
+
+        return result;
     }
 
     private void onExecutionCompleted(ProgramakerFunctionCallResult result) {
@@ -621,4 +628,31 @@ public class ProgramakerCustomBlockPart implements Part {
             input.unlink();
         }
     }
+
+    @Override
+    public Object query(Object lastValue) {
+        String blockType = _block.getBlock_type();
+
+        if ((blockType == null) || (!blockType.equals("getter"))) {
+            // Only relevant for getters
+            return null;
+        }
+
+        String token = this.prepareStart();
+
+        if (token != null) {
+            try {
+                _partGrid.update();
+                ProgramakerFunctionCallResult result = runBlockOperation();
+                if (result != null) {
+                    return result.getResult();
+                }
+            }
+            finally {
+                this.freeBlock(token);
+            }
+        }
+
+        return null;
+    }
 }

app/src/main/java/com/codigoparallevar/minicards/parts/buttons/RoundButton.java

@@ -229,6 +229,11 @@ public class RoundButton implements Part {
 
     }
 
+    @Override
+    public Object query(Object lastValue) {
+        return null; // Only pulse output, so no relevant data
+    }
+
     public RoundOutputConnector getPressedOutputConnector(){
         return _pressedOutputConnector;
     }

app/src/main/java/com/codigoparallevar/minicards/parts/connectors/AnyRoundInputConnector.java

@@ -55,6 +55,17 @@ public class AnyRoundInputConnector extends AnyInputConnector {
         }
     }
 
+    public Object query(Object lastValue) {
+        for (Wire linked : _attachments) {
+            Object returned = linked.query(lastValue);
+            if (returned != null) {
+                return returned;
+            }
+        }
+
+        return null;
+    }
+
     @Override
     public int getX() {
         return _xposition;

app/src/main/java/com/codigoparallevar/minicards/parts/connectors/BooleanRoundOutputConnector.java

@@ -83,7 +83,7 @@ public class BooleanRoundOutputConnector implements Drawable, BooleanOutputConne
             }
             _connections.add(resultPoint);
 
-            wire.attachTo(resultPoint);
+            wire.attachTo(resultPoint, this);
             _wires.add(wire);
         }
         else {
@@ -141,7 +141,7 @@ public class BooleanRoundOutputConnector implements Drawable, BooleanOutputConne
         _connections.add(inputConnector);
 
         BooleanWire wire = new BooleanWire(this, _centerX, _centerY);
-        wire.attachTo(inputConnector);
+        wire.attachTo(inputConnector, this);
         _wires.add(wire);
     }
 
@@ -155,4 +155,9 @@ public class BooleanRoundOutputConnector implements Drawable, BooleanOutputConne
             wire.send(signal);
         }
     }
+
+    @Override
+    public Object query(Object lastValue) {
+        return _part.query(lastValue);
+    }
 }

app/src/main/java/com/codigoparallevar/minicards/parts/connectors/RoundOutputConnector.java

@@ -83,7 +83,7 @@ public class RoundOutputConnector implements Drawable, SignalOutputConnector {
             }
             _connections.add(resultPoint);
 
-            wire.attachTo(resultPoint);
+            wire.attachTo(resultPoint, this);
             _wires.add(wire);
         }
         else {
@@ -141,7 +141,7 @@ public class RoundOutputConnector implements Drawable, SignalOutputConnector {
         _connections.add(inputConnector);
 
         SignalWire wire = new SignalWire(this, _centerX, _centerY);
-        wire.attachTo(inputConnector);
+        wire.attachTo(inputConnector, this);
         _wires.add(wire);
     }
 
@@ -156,6 +156,11 @@ public class RoundOutputConnector implements Drawable, SignalOutputConnector {
         }
     }
 
+    @Override
+    public Object query(Object lastValue) {
+        return _part.query(lastValue);
+    }
+
     public float getX() {
         return _centerX;
     }

app/src/main/java/com/codigoparallevar/minicards/parts/connectors/StringRoundOutputConnector.java

@@ -83,7 +83,7 @@ public class StringRoundOutputConnector implements Drawable, StringOutputConnect
             }
             _connections.add(resultPoint);
 
-            wire.attachTo(resultPoint);
+            wire.attachTo(resultPoint, this);
             _wires.add(wire);
         }
         else {
@@ -141,7 +141,7 @@ public class StringRoundOutputConnector implements Drawable, StringOutputConnect
         _connections.add(inputConnector);
 
         StringWire wire = new StringWire(this, _centerX, _centerY);
-        wire.attachTo(inputConnector);
+        wire.attachTo(inputConnector, this);
         _wires.add(wire);
     }
 
@@ -155,4 +155,9 @@ public class StringRoundOutputConnector implements Drawable, StringOutputConnect
             wire.send(signal);
         }
     }
+
+    @Override
+    public Object query(Object lastValue) {
+        return _part.query(lastValue);
+    }
 }

app/src/main/java/com/codigoparallevar/minicards/parts/logic/Ticker.java

@@ -297,6 +297,11 @@ public class Ticker implements Part {
         _thread = null;
     }
 
+    @Override
+    public Object query(Object lastValue) {
+        return null; // No relevant value (maybe time?)
+    }
+
 
     private int getOutputConnectorCenterX() {
         return (_left + _right) / 2;

app/src/main/java/com/codigoparallevar/minicards/parts/logic/Toggle.java

@@ -288,6 +288,11 @@ public class Toggle implements Part {
 
     }
 
+    @Override
+    public Object query(Object lastValue) {
+        return _activated;
+    }
+
     public static Tuple2<Part, List<PartConnection>> deserialize(PartGrid partGrid, JSONObject data) throws JSONException {
         String id = data.getString("id");
         int left = data.getInt("left");

app/src/main/java/com/codigoparallevar/minicards/parts/samples/ColorBox.java

@@ -220,6 +220,11 @@ public class ColorBox implements Part {
 
     }
 
+    @Override
+    public Object query(Object lastValue) {
+        return null;
+    }
+
     public static Part deserialize(PartGrid partGrid, JSONObject data) throws JSONException {
         String id = data.getString("id");
         int left = data.getInt("left");

app/src/main/java/com/codigoparallevar/minicards/parts/samples/Placeholder.java

@@ -154,6 +154,11 @@ public class Placeholder implements Part {
 
     }
 
+    @Override
+    public Object query(Object lastValue) {
+        return null;
+    }
+
     public static Part deserialize(PartGrid partGrid, JSONObject data) throws JSONException {
         String id = data.getString("id");
         int left = data.getInt("left");

app/src/main/java/com/codigoparallevar/minicards/parts/strings/ConvertToString.java

@@ -5,8 +5,6 @@ import android.graphics.Paint;
 import android.graphics.Rect;
 import android.util.Log;
 
-import androidx.annotation.NonNull;
-
 import com.codigoparallevar.minicards.PartInstantiator;
 import com.codigoparallevar.minicards.ScrolledCanvas;
 import com.codigoparallevar.minicards.parts.connectors.AnyRoundInputConnector;
@@ -46,8 +44,6 @@ public class ConvertToString implements Part {
     private int _bottom;
     private List<InputConnector> inputConnectors;
     private AnyInputConnector _toggleInputConnector;
-
-    @NonNull
     private String _lastValue;
 
     private ConvertToString(String id, PartGrid partGrid, int left, int top, int right, int bottom) {
@@ -57,7 +53,7 @@ public class ConvertToString implements Part {
         _top = top;
         _right = right;
         _bottom = bottom;
-        _lastValue = "-";
+        _lastValue = null;
 
         // Input connector
         _toggleInputConnector = new AnyRoundInputConnector(
@@ -121,7 +117,13 @@ public class ConvertToString implements Part {
             Paint textPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
             textPaint.setColor(Color.GREEN);
             textPaint.setTextSize(100);
-            canvas.drawText(_lastValue,
+
+            String value = "-";
+            if (_lastValue != null) {
+                value = _lastValue;
+            }
+
+            canvas.drawText(value,
                     _left + 10,
                     _bottom - 10,
                     textPaint);
@@ -255,7 +257,7 @@ public class ConvertToString implements Part {
             encoded = value.toString();
         }
 
-        if (!_lastValue.equals(encoded)) {
+        if ((_lastValue != null) && !_lastValue.equals(encoded)) {
             _lastValue = encoded;
 
             _stringOutputConnector.send(new StringSignal(encoded));
@@ -297,6 +299,11 @@ public class ConvertToString implements Part {
 
     }
 
+    @Override
+    public Object query(Object lastValue) {
+        return _lastValue;
+    }
+
     public static Tuple2<Part, List<PartConnection>> deserialize(PartGrid partGrid, JSONObject data) throws JSONException {
         String id = data.getString("id");
         int left = data.getInt("left");

app/src/main/java/com/codigoparallevar/minicards/types/Part.java

@@ -32,4 +32,6 @@ public interface Part extends Selectable, Moveable, Drawable {
 
     void resume();
     void pause();
+
+    Object query(Object lastValue);
 }

app/src/main/java/com/codigoparallevar/minicards/types/connectors/Wiring/BooleanWire.java

@@ -1,13 +1,13 @@
 package com.codigoparallevar.minicards.types.connectors.Wiring;
 
 import com.codigoparallevar.minicards.types.Drawable;
-import com.codigoparallevar.minicards.types.Dropper;
 import com.codigoparallevar.minicards.types.Moveable;
 import com.codigoparallevar.minicards.types.connectors.input.BooleanInputConnector;
+import com.codigoparallevar.minicards.types.connectors.output.OutputConnector;
 import com.codigoparallevar.minicards.types.wireData.BooleanSignal;
 
 public class BooleanWire extends Wire<BooleanSignal, BooleanInputConnector> implements Moveable, Drawable {
-    public BooleanWire(Dropper dropper, int xInit, int yInit) {
+    public BooleanWire(OutputConnector dropper, int xInit, int yInit) {
         super(dropper, xInit, yInit);
     }
 

app/src/main/java/com/codigoparallevar/minicards/types/connectors/Wiring/SignalWire.java

@@ -1,13 +1,13 @@
 package com.codigoparallevar.minicards.types.connectors.Wiring;
 
 import com.codigoparallevar.minicards.types.Drawable;
-import com.codigoparallevar.minicards.types.Dropper;
 import com.codigoparallevar.minicards.types.Moveable;
 import com.codigoparallevar.minicards.types.connectors.input.SignalInputConnector;
+import com.codigoparallevar.minicards.types.connectors.output.OutputConnector;
 import com.codigoparallevar.minicards.types.wireData.Signal;
 
 public class SignalWire extends Wire<Signal, SignalInputConnector> implements Moveable, Drawable {
-    public SignalWire(Dropper dropper, int xInit, int yInit) {
+    public SignalWire(OutputConnector dropper, int xInit, int yInit) {
         super(dropper, xInit, yInit);
     }
 

app/src/main/java/com/codigoparallevar/minicards/types/connectors/Wiring/StringWire.java

@@ -1,13 +1,13 @@
 package com.codigoparallevar.minicards.types.connectors.Wiring;
 
 import com.codigoparallevar.minicards.types.Drawable;
-import com.codigoparallevar.minicards.types.Dropper;
 import com.codigoparallevar.minicards.types.Moveable;
 import com.codigoparallevar.minicards.types.connectors.input.StringInputConnector;
+import com.codigoparallevar.minicards.types.connectors.output.OutputConnector;
 import com.codigoparallevar.minicards.types.wireData.StringSignal;
 
 public class StringWire extends Wire<StringSignal, StringInputConnector> implements Moveable, Drawable {
-    public StringWire(Dropper dropper, int xInit, int yInit) {
+    public StringWire(OutputConnector dropper, int xInit, int yInit) {
         super(dropper, xInit, yInit);
     }
 

app/src/main/java/com/codigoparallevar/minicards/types/connectors/Wiring/Wire.java

@@ -9,6 +9,7 @@ import com.codigoparallevar.minicards.types.Drawable;
 import com.codigoparallevar.minicards.types.Dropper;
 import com.codigoparallevar.minicards.types.Moveable;
 import com.codigoparallevar.minicards.types.connectors.input.InputConnector;
+import com.codigoparallevar.minicards.types.connectors.output.OutputConnector;
 import com.codigoparallevar.minicards.types.wireData.WireDataType;
 
 public class Wire<T extends WireDataType, InputConnectorType extends InputConnector<T, InputConnectorType>>
@@ -21,6 +22,7 @@ public class Wire<T extends WireDataType, InputConnectorType extends InputConnec
     private int _yend;
     private final static int _pathRunWay = 100;
     protected InputConnectorType _attachedTo = null;
+    protected OutputConnector _attachedFrom = null;
 
     public Wire(Dropper dropper, int xInit, int yInit) {
         _dropper = dropper;
@@ -74,8 +76,10 @@ public class Wire<T extends WireDataType, InputConnectorType extends InputConnec
         return _yend;
     }
 
-    public void attachTo(InputConnectorType resultPoint) {
+    public void attachTo(InputConnectorType resultPoint, OutputConnector output) {
         _attachedTo = resultPoint;
+        _attachedFrom = output;
+
         _xend = resultPoint.getX();
         _yend = resultPoint.getY();
         resultPoint.getAttachment(this);
@@ -89,4 +93,8 @@ public class Wire<T extends WireDataType, InputConnectorType extends InputConnec
         _attachedTo = null;
         _dropper.unlinkWire(this);
     }
+
+    public Object query(Object lastValue) {
+        return this._attachedFrom.query(lastValue);
+    }
 }

app/src/main/java/com/codigoparallevar/minicards/types/connectors/output/OutputConnector.java

@@ -23,4 +23,6 @@ public interface OutputConnector<T extends WireDataType,
     void connectTo(T1 inputConnector);
 
     void send(T data);
+
+    Object query(Object lastValue);
 }