Support custom namespace of components taglib

src/main/groovy/org/graceframework/plugin/components/taglib/ComponentNamespacedTagDispatcher.groovy

@@ -0,0 +1,117 @@
+/*
+ * Copyright 2022-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.graceframework.plugin.components.taglib
+
+import groovy.transform.CompileStatic
+import org.springframework.beans.factory.InitializingBean
+
+import org.grails.taglib.NamespacedTagDispatcher
+import org.grails.taglib.TagLibraryLookup
+import org.grails.taglib.TagLibraryMetaUtils
+import org.grails.taglib.TagOutput
+import org.grails.taglib.encoder.OutputContextLookupHelper
+
+/**
+ * {@link NamespacedTagDispatcher} for Component tag
+ *
+ * @author Michael Yan
+ * @since 0.0.2
+ */
+@CompileStatic
+class ComponentNamespacedTagDispatcher extends GroovyObjectSupport implements NamespacedTagDispatcher, InitializingBean {
+
+    public static final String COMPONENT_NAMESPACE = 'vc'
+    public static final String RENDER_TAG_NAME = 'render'
+
+    private String namespace = COMPONENT_NAMESPACE
+    private TagLibraryLookup lookup
+
+    ComponentNamespacedTagDispatcher() {
+    }
+
+    @Override
+    void afterPropertiesSet() throws Exception {
+        initializeMetaClass()
+    }
+
+    void initializeMetaClass() {
+        ExpandoMetaClass emc = new ExpandoMetaClass(getClass(), false, true)
+        emc.initialize()
+        setMetaClass(emc)
+        registerTagMetaMethods(emc)
+    }
+
+    void registerTagMetaMethods(ExpandoMetaClass emc) {
+        TagLibraryMetaUtils.registerTagMetaMethods(emc, this.lookup, this.namespace)
+    }
+
+    @Override
+    String getNamespace() {
+        this.namespace
+    }
+
+    @Override
+    void setTagLibraryLookup(TagLibraryLookup lookup) {
+        if (!this.lookup) {
+            this.lookup = lookup
+        }
+    }
+
+    @Override
+    def methodMissing(String name, Object args) {
+        ((GroovyObject) getMetaClass()).setProperty(name, { Object[] varArgs ->
+            callRender(argsToAttrs(name, varArgs), filterBodyAttr(varArgs))
+        })
+        callRender(argsToAttrs(name, args), filterBodyAttr(args))
+    }
+
+    private callRender(Map attrs, Object body) {
+        TagOutput.captureTagOutput(lookup, COMPONENT_NAMESPACE, RENDER_TAG_NAME, attrs, body,
+                OutputContextLookupHelper.lookupOutputContext())
+    }
+
+    private Map argsToAttrs(String name, Object args) {
+        Map<String, Object> attr = [:]
+        attr.component = name
+        if (args instanceof Object[]) {
+            Object[] tagArgs = ((Object[]) args)
+            if (tagArgs.length > 0 && tagArgs[0] instanceof Map) {
+                Map<String, Object> modelMap = (Map<String, Object>) tagArgs[0]
+                Object encodeAs = modelMap.remove(TagOutput.ENCODE_AS_ATTRIBUTE_NAME)
+                if (encodeAs != null) {
+                    attr.put(TagOutput.ENCODE_AS_ATTRIBUTE_NAME, encodeAs)
+                }
+                attr.put('model', modelMap)
+            }
+        }
+        attr
+    }
+
+    private Object filterBodyAttr(Object args) {
+        if (args instanceof Object[]) {
+            Object[] tagArgs = ((Object[]) args)
+            if (tagArgs.length > 0) {
+                for (Object arg : tagArgs) {
+                    if (!(arg instanceof Map)) {
+                        return arg
+                    }
+                }
+            }
+        }
+        null
+    }
+
+}

src/main/groovy/org/graceframework/plugin/components/taglib/ComponentTagInvocationContextCustomizer.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2022-2024 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.graceframework.plugin.components.taglib;
+
+import java.util.Map;
+
+import grails.util.CollectionUtils;
+
+import org.grails.taglib.TagInvocationContext;
+import org.grails.taglib.TagInvocationContextCustomizer;
+
+/**
+ * Support custom namespace for Component tag
+ *
+ * @author Michael Yan
+ * @since 0.0.2
+ */
+public class ComponentTagInvocationContextCustomizer implements TagInvocationContextCustomizer {
+
+    @SuppressWarnings("rawtypes")
+    public void customize(TagInvocationContext tagInvocationContext) {
+        if (tagInvocationContext.getNamespace().equals("vc")) {
+            if (!tagInvocationContext.getTagName().equals("render")) {
+                String tmpTagName = tagInvocationContext.getTagName();
+                Map tmpAttrs = tagInvocationContext.getAttrs();
+                Map attrs = CollectionUtils.newMap("model", tmpAttrs, "component", tmpTagName);
+
+                tagInvocationContext.setTagName("render");
+                tagInvocationContext.setAttrs(attrs);
+            }
+        }
+    }
+
+}

src/main/resources/META-INF/grails.factories

@@ -1,2 +1,4 @@
 grails.compiler.traits.TraitInjector=grails.compiler.traits.ComponentTraitInjector,grails.compiler.traits.ControllerComponentTraitInjector
-grails.core.ArtefactHandler=org.graceframework.plugin.components.artefact.ComponentArtefactHandler
+grails.core.ArtefactHandler=org.graceframework.plugin.components.artefact.ComponentArtefactHandler
+org.grails.taglib.TagInvocationContextCustomizer=org.graceframework.plugin.components.taglib.ComponentTagInvocationContextCustomizer
+org.grails.taglib.NamespacedTagDispatcher=org.graceframework.plugin.components.taglib.ComponentNamespacedTagDispatcher