add fee rate priority indicator

src/main/java/com/sparrowwallet/sparrow/control/BlockTargetFeeRatesChart.java

@@ -1,5 +1,6 @@
 package com.sparrowwallet.sparrow.control;
 
+import com.sparrowwallet.sparrow.wallet.SendController;
 import javafx.beans.NamedArg;
 import javafx.scene.Node;
 import javafx.scene.chart.Axis;
@@ -27,10 +28,12 @@ public class BlockTargetFeeRatesChart extends LineChart<String, Number> {
 
         for(Iterator<Integer> targetBlocksIter = targetBlocksFeeRates.keySet().iterator(); targetBlocksIter.hasNext(); ) {
             Integer targetBlocks = targetBlocksIter.next();
+            if(SendController.TARGET_BLOCKS_RANGE.contains(targetBlocks)) {
                 String category = targetBlocks + (targetBlocksIter.hasNext() ? "" : "+");
                 XYChart.Data<String, Number> data = new XYChart.Data<>(category, targetBlocksFeeRates.get(targetBlocks));
                 feeRateSeries.getData().add(data);
             }
+        }
 
         if(selectedTargetBlocks != null) {
             select(selectedTargetBlocks);

src/main/java/com/sparrowwallet/sparrow/glyphfont/FontAwesome5.java

@@ -40,6 +40,7 @@ public class FontAwesome5 extends GlyphFont {
         LOCK_OPEN('\uf3c1'),
         PEN_FANCY('\uf5ac'),
         PLUS('\uf067'),
+        PLUS_CIRCLE('\uf055'),
         QRCODE('\uf029'),
         QUESTION_CIRCLE('\uf059'),
         RANDOM('\uf074'),

src/main/java/com/sparrowwallet/sparrow/net/FeeRatesSource.java

@@ -40,6 +40,9 @@ public enum FeeRatesSource {
     };
 
     private static final Logger log = LoggerFactory.getLogger(FeeRatesSource.class);
+    public static final int BLOCKS_IN_HALF_HOUR = 3;
+    public static final int BLOCKS_IN_HOUR = 6;
+    public static final int BLOCKS_IN_TWO_HOURS = 12;
 
     private final String name;
 
@@ -61,16 +64,20 @@ public enum FeeRatesSource {
             Gson gson = new Gson();
             ThreeTierRates threeTierRates = gson.fromJson(reader, ThreeTierRates.class);
             for(Integer blockTarget : defaultblockTargetFeeRates.keySet()) {
-                if(blockTarget < 3) {
+                if(blockTarget < BLOCKS_IN_HALF_HOUR) {
                     blockTargetFeeRates.put(blockTarget, threeTierRates.fastestFee);
-                } else if(blockTarget < 6) {
+                } else if(blockTarget < BLOCKS_IN_HOUR) {
                     blockTargetFeeRates.put(blockTarget, threeTierRates.halfHourFee);
-                } else if(blockTarget <= 10 || defaultblockTargetFeeRates.get(blockTarget) > threeTierRates.hourFee) {
+                } else if(blockTarget < BLOCKS_IN_TWO_HOURS || defaultblockTargetFeeRates.get(blockTarget) > threeTierRates.hourFee) {
                     blockTargetFeeRates.put(blockTarget, threeTierRates.hourFee);
                 } else {
                     blockTargetFeeRates.put(blockTarget, defaultblockTargetFeeRates.get(blockTarget));
                 }
             }
+
+            if(threeTierRates.minimumFee != null) {
+                blockTargetFeeRates.put(Integer.MAX_VALUE, threeTierRates.minimumFee);
+            }
         } catch (Exception e) {
             log.warn("Error retrieving recommended fee rates from " + url, e);
         }
@@ -98,5 +105,6 @@ public enum FeeRatesSource {
         Double fastestFee;
         Double halfHourFee;
         Double hourFee;
+        Double minimumFee;
     }
 }

src/main/java/com/sparrowwallet/sparrow/wallet/SendController.java

@@ -11,9 +11,11 @@ import com.sparrowwallet.sparrow.CurrencyRate;
 import com.sparrowwallet.sparrow.EventManager;
 import com.sparrowwallet.sparrow.control.*;
 import com.sparrowwallet.sparrow.event.*;
+import com.sparrowwallet.sparrow.glyphfont.FontAwesome5;
 import com.sparrowwallet.sparrow.io.Config;
 import com.sparrowwallet.sparrow.net.ExchangeSource;
 import com.sparrowwallet.sparrow.net.ElectrumServer;
+import com.sparrowwallet.sparrow.net.FeeRatesSource;
 import com.sparrowwallet.sparrow.net.MempoolRateSize;
 import javafx.application.Platform;
 import javafx.beans.property.*;
@@ -28,6 +30,7 @@ import javafx.scene.Node;
 import javafx.scene.control.*;
 import javafx.scene.layout.StackPane;
 import javafx.util.StringConverter;
+import org.controlsfx.glyphfont.Glyph;
 import org.controlsfx.validation.ValidationResult;
 import org.controlsfx.validation.ValidationSupport;
 import org.controlsfx.validation.Validator;
@@ -79,6 +82,12 @@ public class SendController extends WalletFormController implements Initializabl
     @FXML
     private CopyableLabel feeRate;
 
+    @FXML
+    private Label feeRatePriority;
+
+    @FXML
+    private Glyph feeRatePriorityGlyph;
+
     @FXML
     private TextField fee;
 
@@ -350,6 +359,8 @@ public class SendController extends WalletFormController implements Initializabl
                 });
             }
         });
+
+        addFeeRangeTrackHighlight(0);
     }
 
     private void initializeTabHeader(int count) {
@@ -558,12 +569,14 @@ public class SendController extends WalletFormController implements Initializabl
         Map<Integer, Double> targetBlocksFeeRates = getTargetBlocksFeeRates();
         int maxTargetBlocks = 1;
         for(Integer targetBlocks : targetBlocksFeeRates.keySet()) {
+            if(TARGET_BLOCKS_RANGE.contains(targetBlocks)) {
                 maxTargetBlocks = Math.max(maxTargetBlocks, targetBlocks);
                 Double candidate = targetBlocksFeeRates.get(targetBlocks);
                 if(Math.round(feeRate) >= Math.round(candidate)) {
                     return targetBlocks;
                 }
             }
+        }
 
         return maxTargetBlocks;
     }
@@ -623,6 +636,45 @@ public class SendController extends WalletFormController implements Initializabl
 
     private void setFeeRate(Double feeRateAmt) {
         feeRate.setText(String.format("%.2f", feeRateAmt) + " sats/vByte");
+        setFeeRatePriority(feeRateAmt);
+    }
+
+    private void setFeeRatePriority(Double feeRateAmt) {
+        Map<Integer, Double> targetBlocksFeeRates = getTargetBlocksFeeRates();
+        Integer targetBlocks = getTargetBlocks(feeRateAmt);
+        if(targetBlocksFeeRates.get(Integer.MAX_VALUE) != null) {
+            Double minFeeRate = targetBlocksFeeRates.get(Integer.MAX_VALUE);
+            if(feeRateAmt <= minFeeRate) {
+                feeRatePriority.setText("Below Minimum");
+                feeRatePriorityGlyph.setStyle("-fx-text-fill: #a0a1a7cc");
+                feeRatePriorityGlyph.setIcon(FontAwesome5.Glyph.EXCLAMATION_CIRCLE);
+                return;
+            }
+
+            Double lowestBlocksRate = targetBlocksFeeRates.get(TARGET_BLOCKS_RANGE.get(TARGET_BLOCKS_RANGE.size() - 1));
+            if(lowestBlocksRate > minFeeRate && feeRateAmt < (minFeeRate + ((lowestBlocksRate - minFeeRate) / 2))) {
+                feeRatePriority.setText("Try Then Replace");
+                feeRatePriorityGlyph.setStyle("-fx-text-fill: #7eb7c9cc");
+                feeRatePriorityGlyph.setIcon(FontAwesome5.Glyph.PLUS_CIRCLE);
+                return;
+            }
+        }
+
+        if(targetBlocks != null) {
+            if(targetBlocks < FeeRatesSource.BLOCKS_IN_HALF_HOUR) {
+                feeRatePriority.setText("High Priority");
+                feeRatePriorityGlyph.setStyle("-fx-text-fill: #c8416499");
+                feeRatePriorityGlyph.setIcon(FontAwesome5.Glyph.CIRCLE);
+            } else if(targetBlocks < FeeRatesSource.BLOCKS_IN_HOUR) {
+                feeRatePriority.setText("Medium Priority");
+                feeRatePriorityGlyph.setStyle("-fx-text-fill: #fba71b99");
+                feeRatePriorityGlyph.setIcon(FontAwesome5.Glyph.CIRCLE);
+            } else {
+                feeRatePriority.setText("Low Priority");
+                feeRatePriorityGlyph.setStyle("-fx-text-fill: #41a9c999");
+                feeRatePriorityGlyph.setIcon(FontAwesome5.Glyph.CIRCLE);
+            }
+        }
     }
 
     private Node getSliderThumb() {
@@ -635,6 +687,47 @@ public class SendController extends WalletFormController implements Initializabl
         }
     }
 
+    private void addFeeRangeTrackHighlight(int count) {
+        Platform.runLater(() -> {
+            Node track = feeRange.lookup(".track");
+            if(track != null) {
+                Map<Integer, Double> targetBlocksFeeRates = getTargetBlocksFeeRates();
+                String highlight = "";
+                if(targetBlocksFeeRates.get(Integer.MAX_VALUE) != null) {
+                    highlight += "#a0a1a766 " + getPercentageOfFeeRange(targetBlocksFeeRates.get(Integer.MAX_VALUE)) + "%, ";
+                }
+                highlight += "#41a9c966 " + getPercentageOfFeeRange(targetBlocksFeeRates, FeeRatesSource.BLOCKS_IN_TWO_HOURS - 1) + "%, ";
+                highlight += "#fba71b66 " + getPercentageOfFeeRange(targetBlocksFeeRates, FeeRatesSource.BLOCKS_IN_HOUR - 1) + "%, ";
+                highlight += "#c8416466 " + getPercentageOfFeeRange(targetBlocksFeeRates, FeeRatesSource.BLOCKS_IN_HALF_HOUR - 1) + "%";
+
+                track.setStyle("-fx-background-color: " +
+                        "-fx-shadow-highlight-color, " +
+                        "linear-gradient(to bottom, derive(-fx-text-box-border, -10%), -fx-text-box-border), " +
+                        "linear-gradient(to bottom, derive(-fx-control-inner-background, -9%), derive(-fx-control-inner-background, 0%), derive(-fx-control-inner-background, -5%), derive(-fx-control-inner-background, -12%)), " +
+                        "linear-gradient(to right, " + highlight + ")");
+            } else if(count < 20) {
+                addFeeRangeTrackHighlight(count+1);
+            }
+        });
+    }
+
+    private int getPercentageOfFeeRange(Map<Integer, Double> targetBlocksFeeRates, Integer minTargetBlocks) {
+        List<Integer> rates = new ArrayList<>(targetBlocksFeeRates.keySet());
+        Collections.reverse(rates);
+        for(Integer targetBlocks : rates) {
+            if(targetBlocks < minTargetBlocks) {
+                return getPercentageOfFeeRange(targetBlocksFeeRates.get(targetBlocks));
+            }
+        }
+
+        return 100;
+    }
+
+    private int getPercentageOfFeeRange(Double feeRate) {
+        double index = Math.log(feeRate) / Math.log(2);
+        return (int)Math.round(index * 10.0);
+    }
+
     private void updateMaxClearButtons(UtxoSelector utxoSelector, UtxoFilter utxoFilter) {
         if(utxoSelector instanceof PresetUtxoSelector) {
             PresetUtxoSelector presetUtxoSelector = (PresetUtxoSelector)utxoSelector;
@@ -811,6 +904,7 @@ public class SendController extends WalletFormController implements Initializabl
         if(targetBlocksField.isVisible()) {
             setFeeRate(event.getTargetBlockFeeRates().get(getTargetBlocks()));
         }
+        addFeeRangeTrackHighlight(0);
     }
 
     @Subscribe

src/main/resources/com/sparrowwallet/sparrow/wallet/send.fxml

@@ -91,6 +91,12 @@
                         </Field>
                         <Field fx:id="feeRateField" text="Rate:">
                             <CopyableLabel fx:id="feeRate" />
+                            <Region HBox.hgrow="ALWAYS" />
+                            <Label fx:id="feeRatePriority" graphicTextGap="5">
+                                <graphic>
+                                    <Glyph fx:id="feeRatePriorityGlyph" fontFamily="Font Awesome 5 Free Solid" fontSize="12" icon="CIRCLE" />
+                                </graphic>
+                            </Label>
                         </Field>
                         <Field text="Fee:">
                             <TextField fx:id="fee" styleClass="amount-field"/>