bug4811: added elemental2.[core|dom|promise] in an "elemental2" project;

this to enable things such as access to FileList and File from FileUpload input elements

java/com.sap.sse.gwt/META-INF/MANIFEST.MF

@@ -11,7 +11,8 @@ Require-Bundle: com.google.gwt.user;bundle-version="2.9.0";resolution:=optional,
  com.google.gwt.servlet;bundle-version="2.9.0",
  com.sap.sse.common,
  com.sap.sse.filestorage,
- com.sap.sse.security.common
+ com.sap.sse.security.common,
+ elemental2;bundle-version="1.1.0"
 Bundle-ActivationPolicy: lazy
 Web-ContextPath: /gwt-base
 Import-Package: com.sap.sse.security,

java/com.sap.sse.gwt/pom.xml

@@ -16,6 +16,12 @@
       <version>${project.version}</version>
       <classifier>sources</classifier>
     </dependency>
+    <dependency>
+      <groupId>com.sap.sailing</groupId>
+      <artifactId>elemental2</artifactId>
+      <version>1.1.0</version>
+      <classifier>sources</classifier>
+    </dependency>
   </dependencies>
   <build>
     <plugins>

java/com.sap.sse.gwt/src/com/sap/sse/gwt/SSESharedGWT.gwt.xml

@@ -3,6 +3,9 @@
 <module>
   <!-- required module to enable String Messages -->
   <inherits name="com.google.gwt.resources.Resources" />
+  <inherits name="elemental2.core.Core" />
+  <inherits name="elemental2.dom.Dom" />
+  <inherits name="elemental2.promise.Promise" />
   
   <inherits name="com.google.gwt.activity.Activity" />
   <inherits name="com.sap.sse.common.SSECommonSerializers" />

java/com.sap.sse.gwt/src/com/sap/sse/gwt/client/fileupload/FileUploadWithLocalFileContent.java

@@ -0,0 +1,58 @@
+package com.sap.sse.gwt.client.fileupload;
+
+import com.google.gwt.user.client.ui.FileUpload;
+
+import elemental2.core.ArrayBuffer;
+import elemental2.core.Uint8Array;
+import elemental2.dom.File;
+import elemental2.dom.FileList;
+import elemental2.dom.HTMLInputElement;
+import elemental2.promise.Promise;
+
+/**
+ * A GWT component wrapping a {@link FileUpload} form {@code input} element of type {@code file} which grants access to
+ * the contents of the files the user has selected for upload. The {@code input} element of type {@code file} has a
+ * {@code files} property of type {@link FileList}, an array of {@code File} JavaScript objects, each of which having,
+ * e.g., an {@code arrayBuffer()} method that delivers a {@code Promise} resolving with an {@code ArrayBuffer}. See
+ * <a href="https://developer.mozilla.org/en-US/docs/Web/API/Blob/arrayBuffer">here</a>. This wrapper around a
+ * {@link FileUpload} input element grants access to the files currently selected.
+ * <p>
+ * 
+ * This can also be combined with adding a {@code change}
+ * {@link FileUpload#addChangeHandler(com.google.gwt.event.dom.client.ChangeHandler) handler} to the {@link FileUpload}
+ * element which is triggered in particular as the user changes the file selection.
+ * <p>
+ * 
+ * @author Axel Uhl (D043530)
+ *
+ */
+public class FileUploadWithLocalFileContent {
+    private final FileUpload fileUpload;
+
+    public static interface FileContentCallback {
+        void fileContentsRead(byte[] fileContents);
+    }
+    
+    public FileUploadWithLocalFileContent(FileUpload fileUpload) {
+        super();
+        this.fileUpload = fileUpload;
+    }
+    
+    public FileList getFileList() {
+        return getFileUploadAsHtmlInputElement().files;
+    }
+    
+    public void getFileContents(int i, FileContentCallback callback) {
+        final FileList fileList = getFileList();
+        final File file = fileList.item((double) i);
+        final Promise<ArrayBuffer> arrayBufferPromise = file.arrayBuffer();
+        arrayBufferPromise.then(arrayBuffer->{
+            callback.fileContentsRead((byte[]) (Object) new Uint8Array(arrayBuffer));
+            return null;
+        });
+    }
+    
+    private HTMLInputElement getFileUploadAsHtmlInputElement() {
+        return (HTMLInputElement) (Object) fileUpload;
+    }
+}

java/elemental2/.classpath

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry exported="true" kind="lib" path="lib/base-1.0.0.jar"/>
+	<classpathentry exported="true" kind="lib" path="lib/elemental2-core-1.1.0.jar"/>
+	<classpathentry exported="true" kind="lib" path="lib/elemental2-dom-1.1.0.jar"/>
+	<classpathentry exported="true" kind="lib" path="lib/elemental2-promise-1.1.0.jar"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8"/>
+	<classpathentry kind="con" path="org.eclipse.pde.core.requiredPlugins"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

java/elemental2/.project

@@ -0,0 +1,28 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>elemental2</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.ManifestBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.pde.SchemaBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.pde.PluginNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>

java/elemental2/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,8 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8
+org.eclipse.jdt.core.compiler.compliance=1.8
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.release=disabled
+org.eclipse.jdt.core.compiler.source=1.8

java/elemental2/.settings/org.eclipse.pde.core.prefs

@@ -0,0 +1,3 @@
+eclipse.preferences.version=1
+pluginProject.extensions=false
+resolve.requirebundle=false

java/elemental2/META-INF/MANIFEST.MF

@@ -0,0 +1,17 @@
+Manifest-Version: 1.0
+Bundle-ManifestVersion: 2
+Bundle-Name: Elemental2
+Bundle-SymbolicName: elemental2
+Bundle-Version: 1.1.0.qualifier
+Automatic-Module-Name: elemental2
+Bundle-RequiredExecutionEnvironment: JavaSE-1.8
+Bundle-ClassPath: lib/elemental2-core-1.1.0.jar,
+ lib/elemental2-dom-1.1.0.jar,
+ lib/elemental2-promise-1.1.0.jar,
+ .,
+ lib/base-1.0.0.jar
+Export-Package: com.google.gwt.core.client,
+ elemental2.core,
+ elemental2.dom,
+ elemental2.promise,
+ jsinterop.base

java/elemental2/build.properties

@@ -0,0 +1,6 @@
+bin.includes = META-INF/,\
+               .,\
+               lib/elemental2-core-1.1.0.jar,\
+               lib/elemental2-dom-1.1.0.jar,\
+               lib/elemental2-promise-1.1.0.jar,\
+               lib/base-1.0.0.jar

java/elemental2/pom.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+  <parent>
+    <artifactId>root</artifactId>
+    <groupId>com.sap.sailing</groupId>
+    <version>1.0.0-SNAPSHOT</version>
+  </parent>
+  <artifactId>elemental2</artifactId>
+  <version>1.1.0-SNAPSHOT</version>
+  <packaging>eclipse-plugin</packaging>
+</project>

java/pom.xml

@@ -77,6 +77,7 @@
         </property>
       </activation>
       <modules>
+        <module>elemental2</module>
         <module>com.sap.sse</module>
         <module>com.sap.sse.test</module>
         <module>com.sap.sse.landscape.common</module>