[core] Expose mbgl::style::Light::setProperty

Works the same way as mbgl::style::set{Paint,Layout}Property functions.

4 files changed, 204 insertions, 0 deletions

diff --git a/include/mbgl/style/light.hpp b/include/mbgl/style/light.hpp
index 0b65df9f1b..21a05cf4c8 100644
--- a/include/mbgl/style/light.hpp
+++ b/include/mbgl/style/light.hpp
@@ -2,6 +2,7 @@
 
 #pragma once
 
+#include <mbgl/style/conversion.hpp>
 #include <mbgl/style/property_value.hpp>
 #include <mbgl/style/transition_options.hpp>
 #include <mbgl/style/types.hpp>
@@ -17,6 +18,9 @@ public:
     Light();
     ~Light();
 
+    // Dynamic properties
+    optional<conversion::Error> setProperty(const std::string& name, const conversion::Convertible& value);
+
     static LightAnchorType getDefaultAnchor();
     PropertyValue<LightAnchorType> getAnchor() const;
     void setAnchor(PropertyValue<LightAnchorType>);
diff --git a/include/mbgl/style/light.hpp.ejs b/include/mbgl/style/light.hpp.ejs
index adc5b651e3..c3001d982b 100644
--- a/include/mbgl/style/light.hpp.ejs
+++ b/include/mbgl/style/light.hpp.ejs
@@ -5,6 +5,7 @@
 
 #pragma once
 
+#include <mbgl/style/conversion.hpp>
 #include <mbgl/style/property_value.hpp>
 #include <mbgl/style/transition_options.hpp>
 #include <mbgl/style/types.hpp>
@@ -20,6 +21,9 @@ public:
     Light();
     ~Light();
 
+    // Dynamic properties
+    optional<conversion::Error> setProperty(const std::string& name, const conversion::Convertible& value);
+
 <% for (const property of properties) { -%>
     static <%- evaluatedType(property) %> getDefault<%- camelize(property.name) %>();
     <%- propertyValueType(property) %> get<%- camelize(property.name) %>() const;
diff --git a/src/mbgl/style/light.cpp b/src/mbgl/style/light.cpp
index a88cc02bd7..cc8897acee 100644
--- a/src/mbgl/style/light.cpp
+++ b/src/mbgl/style/light.cpp
@@ -3,6 +3,13 @@
 #include <mbgl/style/light.hpp>
 #include <mbgl/style/light_impl.hpp>
 #include <mbgl/style/light_observer.hpp>
+#include <mbgl/style/conversion/light.hpp>
+#include <mbgl/style/conversion/property_value.hpp>
+#include <mbgl/style/conversion/transition_options.hpp>
+#include <mbgl/style/conversion/json.hpp>
+#include <mbgl/style/conversion_impl.hpp>
+
+#include <mapbox/eternal.hpp>
 
 namespace mbgl {
 namespace style {
@@ -24,6 +31,118 @@ Mutable<Light::Impl> Light::mutableImpl() const {
     return makeMutable<Impl>(*impl);
 }
 
+using namespace conversion;
+
+optional<Error> Light::setProperty(const std::string& name, const Convertible& value) {
+    enum class Property : uint8_t {
+        Anchor,
+        Color,
+        Intensity,
+        Position,
+        AnchorTransition,
+        ColorTransition,
+        IntensityTransition,
+        PositionTransition,
+    };
+
+    MAPBOX_ETERNAL_CONSTEXPR const auto properties = mapbox::eternal::hash_map<mapbox::eternal::string, uint8_t>({
+        { "anchor", static_cast<uint8_t>(Property::Anchor) },
+        { "color", static_cast<uint8_t>(Property::Color) },
+        { "intensity", static_cast<uint8_t>(Property::Intensity) },
+        { "position", static_cast<uint8_t>(Property::Position) },
+        { "anchor-transition", static_cast<uint8_t>(Property::AnchorTransition) },
+        { "color-transition", static_cast<uint8_t>(Property::ColorTransition) },
+        { "intensity-transition", static_cast<uint8_t>(Property::IntensityTransition) },
+        { "position-transition", static_cast<uint8_t>(Property::PositionTransition) }
+    });
+
+    const auto it = properties.find(name.c_str());
+    if (it == properties.end()) {
+        return Error { "light doesn't support this property" };
+    }
+
+    auto property = static_cast<Property>(it->second);
+
+        
+    if (property == Property::Anchor) {
+        Error error;
+        optional<PropertyValue<LightAnchorType>> typedValue = convert<PropertyValue<LightAnchorType>>(value, error, false, false);
+        if (!typedValue) {
+            return error;
+        }
+        
+        setAnchor(*typedValue);
+        return nullopt;
+        
+    }
+    
+    if (property == Property::Color) {
+        Error error;
+        optional<PropertyValue<Color>> typedValue = convert<PropertyValue<Color>>(value, error, false, false);
+        if (!typedValue) {
+            return error;
+        }
+        
+        setColor(*typedValue);
+        return nullopt;
+        
+    }
+    
+    if (property == Property::Intensity) {
+        Error error;
+        optional<PropertyValue<float>> typedValue = convert<PropertyValue<float>>(value, error, false, false);
+        if (!typedValue) {
+            return error;
+        }
+        
+        setIntensity(*typedValue);
+        return nullopt;
+        
+    }
+    
+    if (property == Property::Position) {
+        Error error;
+        optional<PropertyValue<Position>> typedValue = convert<PropertyValue<Position>>(value, error, false, false);
+        if (!typedValue) {
+            return error;
+        }
+        
+        setPosition(*typedValue);
+        return nullopt;
+        
+    }
+    
+
+    Error error;
+    optional<TransitionOptions> transition = convert<TransitionOptions>(value, error);
+    if (!transition) {
+        return error;
+    }
+    
+    if (property == Property::AnchorTransition) {
+        setAnchorTransition(*transition);
+        return nullopt;
+    }
+    
+    if (property == Property::ColorTransition) {
+        setColorTransition(*transition);
+        return nullopt;
+    }
+    
+    if (property == Property::IntensityTransition) {
+        setIntensityTransition(*transition);
+        return nullopt;
+    }
+    
+    if (property == Property::PositionTransition) {
+        setPositionTransition(*transition);
+        return nullopt;
+    }
+    
+
+    return Error { "light doesn't support this property" };
+}
+
 LightAnchorType Light::getDefaultAnchor() {
     return LightAnchor::defaultValue();
 }
diff --git a/src/mbgl/style/light.cpp.ejs b/src/mbgl/style/light.cpp.ejs
index 45241c60fd..93e487f7a8 100644
--- a/src/mbgl/style/light.cpp.ejs
+++ b/src/mbgl/style/light.cpp.ejs
@@ -6,6 +6,13 @@
 #include <mbgl/style/light.hpp>
 #include <mbgl/style/light_impl.hpp>
 #include <mbgl/style/light_observer.hpp>
+#include <mbgl/style/conversion/light.hpp>
+#include <mbgl/style/conversion/property_value.hpp>
+#include <mbgl/style/conversion/transition_options.hpp>
+#include <mbgl/style/conversion/json.hpp>
+#include <mbgl/style/conversion_impl.hpp>
+
+#include <mapbox/eternal.hpp>
 
 namespace mbgl {
 namespace style {
@@ -27,6 +34,76 @@ Mutable<Light::Impl> Light::mutableImpl() const {
     return makeMutable<Impl>(*impl);
 }
 
+using namespace conversion;
+
+optional<Error> Light::setProperty(const std::string& name, const Convertible& value) {
+    enum class Property : uint8_t {
+<% for (const property of properties) { -%>
+        <%- camelize(property.name) %>,
+<% } -%>
+<% for (const property of properties) { -%>
+        <%- camelize(property.name) %>Transition,
+<% } -%>
+    };
+
+    MAPBOX_ETERNAL_CONSTEXPR const auto properties = mapbox::eternal::hash_map<mapbox::eternal::string, uint8_t>({
+        <%- properties.map(p => `{ "${p.name}", static_cast<uint8_t>(Property::${camelize(p.name)}) }`).join(',\n        ') %>,
+        <%- properties.map(p => `{ "${p.name}-transition", static_cast<uint8_t>(Property::${camelize(p.name)}Transition) }`).join(',\n        ') %>
+    });
+
+    const auto it = properties.find(name.c_str());
+    if (it == properties.end()) {
+        return Error { "light doesn't support this property" };
+    }
+
+    auto property = static_cast<Property>(it->second);
+
+    <%
+        const conversions = {};
+        for (const property of properties) {
+            const dataDriven = property['property-type'] === 'data-driven' || property['property-type'] === 'cross-faded-data-driven';
+            const convertTokens = property.name === 'icon-image' || property.name === 'text-field';
+            const conversion = `optional<${propertyValueType(property)}> typedValue = convert<${propertyValueType(property)}>(value, error, ${dataDriven}, ${convertTokens})`;
+            conversions[conversion] = conversions[conversion] || [];
+            conversions[conversion].push(property);
+        }
+    -%>
+    <% for (const key in conversions) {
+        const properties = conversions[key];
+    %>
+    if (<%- properties.map(p => `property == Property::${camelize(p.name)}`).join(' || ') %>) {
+        Error error;
+        <%- key %>;
+        if (!typedValue) {
+            return error;
+        }
+        <% if (properties.length == 1) { %>
+        set<%- camelize(properties[0].name) %>(*typedValue);
+        return nullopt;
+        <% } else for (const property of properties) { %>
+        if (property == Property::<%- camelize(property.name) %>) {
+            set<%- camelize(property.name) %>(*typedValue);
+            return nullopt;
+        }
+        <% } %>
+    }
+    <% } %>
+
+    Error error;
+    optional<TransitionOptions> transition = convert<TransitionOptions>(value, error);
+    if (!transition) {
+        return error;
+    }
+    <% for (const property of properties) { %>
+    if (property == Property::<%- camelize(property.name) %>Transition) {
+        set<%- camelize(property.name) %>Transition(*transition);
+        return nullopt;
+    }
+    <% } %>
+
+    return Error { "light doesn't support this property" };
+}
+
 <% for (const property of properties) { -%>
 <%- evaluatedType(property) %> Light::getDefault<%- camelize(property.name) %>() {
     return Light<%- camelize(property.name) %>::defaultValue();