From 22b3834caa5fe3ae91cf957124a3f1ad1d165cee Mon Sep 17 00:00:00 2001
From: Jesse Bounds <jesse@rebounds.net>
Date: Wed, 4 Jan 2017 07:35:25 -0800
Subject: [ios, macos] Add support for data-driven property functions

---
 platform/darwin/src/MGLLineStyleLayer.mm | 98 +++++++++++++++++++++++---------
 1 file changed, 70 insertions(+), 28 deletions(-)

(limited to 'platform/darwin/src/MGLLineStyleLayer.mm')

diff --git a/platform/darwin/src/MGLLineStyleLayer.mm b/platform/darwin/src/MGLLineStyleLayer.mm
index 73ffa9a5ae..6f1d2ee249 100644
--- a/platform/darwin/src/MGLLineStyleLayer.mm
+++ b/platform/darwin/src/MGLLineStyleLayer.mm
@@ -150,7 +150,10 @@ namespace mbgl {
 - (MGLStyleValue<NSValue *> *)lineCap {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineCap() ?: self.rawLayer->getDefaultLineCap();
+    auto propertyValue = self.rawLayer->getLineCap();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<mbgl::style::LineCapType, NSValue *, mbgl::style::LineCapType, MGLLineCap>().toEnumStyleValue(self.rawLayer->getDefaultLineCap());
+    }
     return MGLStyleValueTransformer<mbgl::style::LineCapType, NSValue *, mbgl::style::LineCapType, MGLLineCap>().toEnumStyleValue(propertyValue);
 }
 
@@ -164,35 +167,44 @@ namespace mbgl {
 - (MGLStyleValue<NSValue *> *)lineJoin {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineJoin() ?: self.rawLayer->getDefaultLineJoin();
+    auto propertyValue = self.rawLayer->getLineJoin();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<mbgl::style::LineJoinType, NSValue *, mbgl::style::LineJoinType, MGLLineJoin>().toEnumStyleValue(self.rawLayer->getDefaultLineJoin());
+    }
     return MGLStyleValueTransformer<mbgl::style::LineJoinType, NSValue *, mbgl::style::LineJoinType, MGLLineJoin>().toEnumStyleValue(propertyValue);
 }
 
 - (void)setLineMiterLimit:(MGLStyleValue<NSNumber *> *)lineMiterLimit {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(lineMiterLimit);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toInterpolatablePropertyValue(lineMiterLimit);
     self.rawLayer->setLineMiterLimit(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)lineMiterLimit {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineMiterLimit() ?: self.rawLayer->getDefaultLineMiterLimit();
+    auto propertyValue = self.rawLayer->getLineMiterLimit();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(self.rawLayer->getDefaultLineMiterLimit());
+    }
     return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
 }
 
 - (void)setLineRoundLimit:(MGLStyleValue<NSNumber *> *)lineRoundLimit {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(lineRoundLimit);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toInterpolatablePropertyValue(lineRoundLimit);
     self.rawLayer->setLineRoundLimit(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)lineRoundLimit {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineRoundLimit() ?: self.rawLayer->getDefaultLineRoundLimit();
+    auto propertyValue = self.rawLayer->getLineRoundLimit();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(self.rawLayer->getDefaultLineRoundLimit());
+    }
     return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
 }
 
@@ -201,29 +213,35 @@ namespace mbgl {
 - (void)setLineBlur:(MGLStyleValue<NSNumber *> *)lineBlur {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(lineBlur);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenPropertyValue(lineBlur);
     self.rawLayer->setLineBlur(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)lineBlur {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineBlur() ?: self.rawLayer->getDefaultLineBlur();
-    return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
+    auto propertyValue = self.rawLayer->getLineBlur();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(self.rawLayer->getDefaultLineBlur());
+    }
+    return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(propertyValue);
 }
 
 - (void)setLineColor:(MGLStyleValue<MGLColor *> *)lineColor {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toPropertyValue(lineColor);
+    auto mbglValue = MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toDataDrivenPropertyValue(lineColor);
     self.rawLayer->setLineColor(mbglValue);
 }
 
 - (MGLStyleValue<MGLColor *> *)lineColor {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineColor() ?: self.rawLayer->getDefaultLineColor();
-    return MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toStyleValue(propertyValue);
+    auto propertyValue = self.rawLayer->getLineColor();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toDataDrivenStyleValue(self.rawLayer->getDefaultLineColor());
+    }
+    return MGLStyleValueTransformer<mbgl::Color, MGLColor *>().toDataDrivenStyleValue(propertyValue);
 }
 
 - (void)setLineDashPattern:(MGLStyleValue<NSArray<NSNumber *> *> *)lineDashPattern {
@@ -236,7 +254,10 @@ namespace mbgl {
 - (MGLStyleValue<NSArray<NSNumber *> *> *)lineDashPattern {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineDasharray() ?: self.rawLayer->getDefaultLineDasharray();
+    auto propertyValue = self.rawLayer->getLineDasharray();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<std::vector<float>, NSArray<NSNumber *> *, float>().toStyleValue(self.rawLayer->getDefaultLineDasharray());
+    }
     return MGLStyleValueTransformer<std::vector<float>, NSArray<NSNumber *> *, float>().toStyleValue(propertyValue);
 }
 
@@ -250,43 +271,52 @@ namespace mbgl {
 - (void)setLineGapWidth:(MGLStyleValue<NSNumber *> *)lineGapWidth {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(lineGapWidth);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenPropertyValue(lineGapWidth);
     self.rawLayer->setLineGapWidth(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)lineGapWidth {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineGapWidth() ?: self.rawLayer->getDefaultLineGapWidth();
-    return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
+    auto propertyValue = self.rawLayer->getLineGapWidth();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(self.rawLayer->getDefaultLineGapWidth());
+    }
+    return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(propertyValue);
 }
 
 - (void)setLineOffset:(MGLStyleValue<NSNumber *> *)lineOffset {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(lineOffset);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenPropertyValue(lineOffset);
     self.rawLayer->setLineOffset(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)lineOffset {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineOffset() ?: self.rawLayer->getDefaultLineOffset();
-    return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
+    auto propertyValue = self.rawLayer->getLineOffset();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(self.rawLayer->getDefaultLineOffset());
+    }
+    return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(propertyValue);
 }
 
 - (void)setLineOpacity:(MGLStyleValue<NSNumber *> *)lineOpacity {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(lineOpacity);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenPropertyValue(lineOpacity);
     self.rawLayer->setLineOpacity(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)lineOpacity {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineOpacity() ?: self.rawLayer->getDefaultLineOpacity();
-    return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
+    auto propertyValue = self.rawLayer->getLineOpacity();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(self.rawLayer->getDefaultLineOpacity());
+    }
+    return MGLStyleValueTransformer<float, NSNumber *>().toDataDrivenStyleValue(propertyValue);
 }
 
 - (void)setLinePattern:(MGLStyleValue<NSString *> *)linePattern {
@@ -299,21 +329,27 @@ namespace mbgl {
 - (MGLStyleValue<NSString *> *)linePattern {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLinePattern() ?: self.rawLayer->getDefaultLinePattern();
+    auto propertyValue = self.rawLayer->getLinePattern();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<std::string, NSString *>().toStyleValue(self.rawLayer->getDefaultLinePattern());
+    }
     return MGLStyleValueTransformer<std::string, NSString *>().toStyleValue(propertyValue);
 }
 
 - (void)setLineTranslation:(MGLStyleValue<NSValue *> *)lineTranslation {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<std::array<float, 2>, NSValue *>().toPropertyValue(lineTranslation);
+    auto mbglValue = MGLStyleValueTransformer<std::array<float, 2>, NSValue *>().toInterpolatablePropertyValue(lineTranslation);
     self.rawLayer->setLineTranslate(mbglValue);
 }
 
 - (MGLStyleValue<NSValue *> *)lineTranslation {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineTranslate() ?: self.rawLayer->getDefaultLineTranslate();
+    auto propertyValue = self.rawLayer->getLineTranslate();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<std::array<float, 2>, NSValue *>().toStyleValue(self.rawLayer->getDefaultLineTranslate());
+    }
     return MGLStyleValueTransformer<std::array<float, 2>, NSValue *>().toStyleValue(propertyValue);
 }
 
@@ -334,7 +370,10 @@ namespace mbgl {
 - (MGLStyleValue<NSValue *> *)lineTranslationAnchor {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineTranslateAnchor() ?: self.rawLayer->getDefaultLineTranslateAnchor();
+    auto propertyValue = self.rawLayer->getLineTranslateAnchor();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<mbgl::style::TranslateAnchorType, NSValue *, mbgl::style::TranslateAnchorType, MGLLineTranslationAnchor>().toEnumStyleValue(self.rawLayer->getDefaultLineTranslateAnchor());
+    }
     return MGLStyleValueTransformer<mbgl::style::TranslateAnchorType, NSValue *, mbgl::style::TranslateAnchorType, MGLLineTranslationAnchor>().toEnumStyleValue(propertyValue);
 }
 
@@ -348,14 +387,17 @@ namespace mbgl {
 - (void)setLineWidth:(MGLStyleValue<NSNumber *> *)lineWidth {
     MGLAssertStyleLayerIsValid();
 
-    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toPropertyValue(lineWidth);
+    auto mbglValue = MGLStyleValueTransformer<float, NSNumber *>().toInterpolatablePropertyValue(lineWidth);
     self.rawLayer->setLineWidth(mbglValue);
 }
 
 - (MGLStyleValue<NSNumber *> *)lineWidth {
     MGLAssertStyleLayerIsValid();
 
-    auto propertyValue = self.rawLayer->getLineWidth() ?: self.rawLayer->getDefaultLineWidth();
+    auto propertyValue = self.rawLayer->getLineWidth();
+    if (propertyValue.isUndefined()) {
+        return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(self.rawLayer->getDefaultLineWidth());
+    }
     return MGLStyleValueTransformer<float, NSNumber *>().toStyleValue(propertyValue);
 }
 
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