feat: html intention support

src/main/java/de/marhali/easyi18n/assistance/intention/XmlTranslationIntention.java

@@ -0,0 +1,27 @@
+package de.marhali.easyi18n.assistance.intention;
+
+import com.intellij.openapi.util.TextRange;
+import com.intellij.psi.PsiElement;
+import com.intellij.psi.xml.XmlAttributeValue;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Xml specific translation key intention.
+ * @author adeptius
+ */
+public class XmlTranslationIntention extends AbstractTranslationIntention {
+    @Override
+    protected @Nullable String extractText(@NotNull PsiElement element) {
+        if(!(element.getParent() instanceof XmlAttributeValue)) {
+            return null;
+        }
+
+        return ((XmlAttributeValue) element.getParent()).getValue();
+    }
+
+    @Override
+    @NotNull TextRange convertRange(@NotNull TextRange input) {
+        return new TextRange(input.getStartOffset() + 1, input.getEndOffset() - 1);
+    }
+}

src/main/resources/META-INF/de.marhali.easyi18n-xml.xml

@@ -21,5 +21,8 @@
                 implementationClass="de.marhali.easyi18n.assistance.completion.XmlCompletionContributor"
         />
 
+        <intentionAction>
+            <className>de.marhali.easyi18n.assistance.intention.XmlTranslationIntention</className>
+        </intentionAction>
     </extensions>
 </idea-plugin>