Outlet and Render components.

TODO.md

@@ -22,12 +22,17 @@ For example:
     - fp
 - [ ] Remove gradle plugins and whatnot until we actually build the whole framework
 
-## 0.1.2
+## 0.1.3
+- [ ] refactor tools/gradle start scripts to use dist instead of custom bin script
+  - [ ] have custom bin/* scripts which point to dist(s) for convenience
 - [ ] di bug: @Singleton toSelf() causes stack overflow
-- [ ] `Outlet` component for rendering children like so:
+
+## 0.1.2
+- [x] `Outlet` component for rendering children like so:
 ```
 <Outlet children={children} />
 ```
+- [x] `Render` component
 - [x] `data-` attributes need to function correctly (really any attribute with hyphen).
 
 ## 0.1.1

web-view-components/src/main/groovy/groowt/view/component/web/DefaultWebViewComponentScope.groovy

@@ -14,6 +14,8 @@ class DefaultWebViewComponentScope extends DefaultComponentScope implements WebV
             addWithAttr(DefaultCase)
             addWithAttr(Each)
             addWithAttr(Echo)
+            addWithAttr(Outlet)
+            addWithAttr(Render)
             addWithAttr(Switch)
             addWithAttr(WhenNotEmpty)
             addWithAttr(WhenNotNull)

web-view-components/src/main/groovy/groowt/view/component/web/lib/Outlet.groovy

@@ -0,0 +1,22 @@
+package groowt.view.component.web.lib
+
+import groowt.view.View
+import groowt.view.component.runtime.DefaultComponentWriter
+
+class Outlet extends DelegatingWebViewComponent {
+
+    private final List givenChildren
+
+    Outlet(Map attr) {
+        givenChildren = attr.children ?: []
+    }
+
+    @Override
+    protected View getDelegate() {
+        return { Writer w ->
+            def cw = new DefaultComponentWriter(w, context.renderContext, context)
+            givenChildren.each { cw << it }
+        }
+    }
+
+}

web-view-components/src/main/groovy/groowt/view/component/web/lib/Render.groovy

@@ -0,0 +1,28 @@
+package groowt.view.component.web.lib
+
+import groowt.view.View
+
+class Render extends DelegatingWebViewComponent {
+
+    private final Object item
+
+    Render(Map attr) {
+        item = Objects.requireNonNull(attr.item, "<Render> attribute 'item' must not be null.")
+    }
+
+    @Override
+    protected View getDelegate() {
+        return { Writer w ->
+            if (item.respondsTo('renderTo', [Writer] as Class[])) {
+                item.renderTo(w)
+            } else if (item.respondsTo('render')) {
+                w << item.render()
+            } else {
+                throw new IllegalArgumentException(
+                        '<Render> must use an item which responds to either renderTo(Writer) or render().'
+                )
+            }
+        }
+    }
+
+}

web-view-components/src/test/groovy/groowt/view/component/web/lib/OutletTests.groovy

@@ -0,0 +1,17 @@
+package groowt.view.component.web.lib
+
+import org.junit.jupiter.api.Test
+
+class OutletTests extends AbstractWebViewComponentTests {
+
+    @Test
+    void smokeScreen() {
+        doTest('<Outlet />', '')
+    }
+
+    @Test
+    void withChildren() {
+        doTest('<Echo items={[0, 1, 2]}><Outlet children={items} /></Echo>', '012')
+    }
+
+}

web-view-components/src/test/groovy/groowt/view/component/web/lib/RenderTests.groovy

@@ -0,0 +1,47 @@
+package groowt.view.component.web.lib
+
+import org.junit.jupiter.api.Test
+
+class RenderTests extends AbstractWebViewComponentTests {
+
+    static final class RenderToExample {
+
+        void renderTo(Writer w) {
+            w << 'Hello, World!'
+        }
+
+    }
+
+    static final class RenderExample {
+
+        String render() {
+            'Hello, World!'
+        }
+
+    }
+
+    @Test
+    void renderToExample() {
+        doTest('''
+                ---
+                package groowt.view.component.web.lib
+                ---
+                <Render item={new RenderTests.RenderToExample()} />
+                '''.stripIndent().trim(),
+                'Hello, World!'
+        )
+    }
+
+    @Test
+    void renderExample() {
+        doTest('''
+                ---
+                package groowt.view.component.web.lib
+                ---
+                <Render item={new RenderTests.RenderExample()} />
+                '''.stripIndent().trim(),
+                'Hello, World!'
+        )
+    }
+
+}