horazontal layout

.classpath

@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
-	<classpathentry kind="src" output="target/messages-2.4.0-SNAPSHOT/WEB-INF/classes" path="src/main/java">
+	<classpathentry kind="src" output="target/messages-2.5.0-SNAPSHOT/WEB-INF/classes" path="src/main/java">
 		<attributes>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry excluding="**" kind="src" output="target/messages-2.4.0-SNAPSHOT/WEB-INF/classes" path="src/main/resources">
+	<classpathentry excluding="**" kind="src" output="target/messages-2.5.0-SNAPSHOT/WEB-INF/classes" path="src/main/resources">
 		<attributes>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
@@ -22,36 +22,19 @@
 			<attribute name="org.eclipse.jst.component.dependency" value="/WEB-INF/lib"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="src" output="target/messages-2.4.0-SNAPSHOT/WEB-INF/classes" path="target/generated-sources/gwt">
+	<classpathentry kind="src" output="target/messages-2.5.0-SNAPSHOT/WEB-INF/classes" path="target/generated-sources/gwt">
 		<attributes>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="com.gwtplugins.gwt.eclipse.core.GWT_CONTAINER/gwt-2.8.1"/>
+	<classpathentry kind="con" path="com.gwtplugins.gwt.eclipse.core.GWT_CONTAINER"/>
 	<classpathentry kind="src" output="target/test-classes" path="src/test/java">
 		<attributes>
+			<attribute name="test" value="true"/>
 			<attribute name="optional" value="true"/>
 			<attribute name="maven.pomderived" value="true"/>
-			<attribute name="test" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="lib" path="/Users/massi/portal/distro/GWT SDK/gwt-2.8.2/gwt-user.jar">
+	<classpathentry kind="output" path="target/messages-2.5.0-SNAPSHOT/WEB-INF/classes"/>
-		<attributes>
-			<attribute name="javadoc_location" value="file:/Users/massi/portal/distro/GWT%20SDK/gwt-2.8.2/doc/javadoc/"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry kind="lib" path="/Users/massi/portal/distro/GWT SDK/gwt-2.8.2/gwt-codeserver.jar">
-		<attributes>
-			<attribute name="javadoc_location" value="file:/Users/massi/portal/distro/GWT%20SDK/gwt-2.8.2/doc/javadoc/"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry kind="lib" path="/Users/massi/portal/distro/GWT SDK/gwt-2.8.2/gwt-dev.jar">
-		<attributes>
-			<attribute name="javadoc_location" value="file:/Users/massi/portal/distro/GWT%20SDK/gwt-2.8.2/doc/javadoc/"/>
-		</attributes>
-	</classpathentry>
-	<classpathentry kind="lib" path="/Users/massi/portal/distro/GWT SDK/gwt-2.8.2/validation-api-1.0.0.GA-sources.jar"/>
-	<classpathentry kind="lib" path="/Users/massi/portal/distro/GWT SDK/gwt-2.8.2/validation-api-1.0.0.GA.jar" sourcepath="/Users/massi/portal/distro/GWT SDK/gwt-2.8.2/validation-api-1.0.0.GA-sources.jar"/>
-	<classpathentry kind="output" path="target/messages-2.4.0-SNAPSHOT/WEB-INF/classes"/>
 </classpath>

.settings/com.gwtplugins.gdt.eclipse.core.prefs

@@ -1,4 +1,5 @@
 eclipse.preferences.version=1
 lastWarOutDir=${webappDirectory}
+launchConfigExternalUrlPrefix=
 warSrcDir=src/main/webapp
 warSrcDirIsOutput=false

.settings/org.eclipse.core.resources.prefs

@@ -1,5 +1,6 @@
 eclipse.preferences.version=1
 encoding//src/main/java=UTF-8
 encoding//src/main/resources=UTF-8
+encoding//src/test/java=UTF-8
 encoding//target/generated-sources/gwt=UTF-8
 encoding/<project>=UTF-8

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

@@ -1,9 +1,112 @@
 eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.annotation.inheritNullAnnotations=disabled
+org.eclipse.jdt.core.compiler.annotation.missingNonNullByDefaultAnnotation=ignore
+org.eclipse.jdt.core.compiler.annotation.nonnull=org.eclipse.jdt.annotation.NonNull
+org.eclipse.jdt.core.compiler.annotation.nonnull.secondary=
+org.eclipse.jdt.core.compiler.annotation.nonnullbydefault=org.eclipse.jdt.annotation.NonNullByDefault
+org.eclipse.jdt.core.compiler.annotation.nonnullbydefault.secondary=
+org.eclipse.jdt.core.compiler.annotation.nullable=org.eclipse.jdt.annotation.Nullable
+org.eclipse.jdt.core.compiler.annotation.nullable.secondary=
+org.eclipse.jdt.core.compiler.annotation.nullanalysis=disabled
 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.APILeak=warning
+org.eclipse.jdt.core.compiler.problem.annotatedTypeArgumentToUnannotated=info
+org.eclipse.jdt.core.compiler.problem.annotationSuperInterface=warning
 org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.autoboxing=ignore
+org.eclipse.jdt.core.compiler.problem.comparingIdentical=warning
+org.eclipse.jdt.core.compiler.problem.deadCode=warning
+org.eclipse.jdt.core.compiler.problem.deprecation=warning
+org.eclipse.jdt.core.compiler.problem.deprecationInDeprecatedCode=disabled
+org.eclipse.jdt.core.compiler.problem.deprecationWhenOverridingDeprecatedMethod=disabled
+org.eclipse.jdt.core.compiler.problem.discouragedReference=warning
+org.eclipse.jdt.core.compiler.problem.emptyStatement=ignore
+org.eclipse.jdt.core.compiler.problem.enablePreviewFeatures=disabled
 org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.problem.explicitlyClosedAutoCloseable=ignore
+org.eclipse.jdt.core.compiler.problem.fallthroughCase=ignore
+org.eclipse.jdt.core.compiler.problem.fatalOptionalError=disabled
+org.eclipse.jdt.core.compiler.problem.fieldHiding=ignore
+org.eclipse.jdt.core.compiler.problem.finalParameterBound=warning
+org.eclipse.jdt.core.compiler.problem.finallyBlockNotCompletingNormally=warning
 org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
+org.eclipse.jdt.core.compiler.problem.hiddenCatchBlock=warning
+org.eclipse.jdt.core.compiler.problem.includeNullInfoFromAsserts=disabled
+org.eclipse.jdt.core.compiler.problem.incompatibleNonInheritedInterfaceMethod=warning
+org.eclipse.jdt.core.compiler.problem.incompleteEnumSwitch=warning
+org.eclipse.jdt.core.compiler.problem.indirectStaticAccess=ignore
+org.eclipse.jdt.core.compiler.problem.localVariableHiding=ignore
+org.eclipse.jdt.core.compiler.problem.methodWithConstructorName=warning
+org.eclipse.jdt.core.compiler.problem.missingDefaultCase=ignore
+org.eclipse.jdt.core.compiler.problem.missingDeprecatedAnnotation=ignore
+org.eclipse.jdt.core.compiler.problem.missingEnumCaseDespiteDefault=disabled
+org.eclipse.jdt.core.compiler.problem.missingHashCodeMethod=ignore
+org.eclipse.jdt.core.compiler.problem.missingOverrideAnnotation=ignore
+org.eclipse.jdt.core.compiler.problem.missingOverrideAnnotationForInterfaceMethodImplementation=enabled
+org.eclipse.jdt.core.compiler.problem.missingSerialVersion=warning
+org.eclipse.jdt.core.compiler.problem.missingSynchronizedOnInheritedMethod=ignore
+org.eclipse.jdt.core.compiler.problem.noEffectAssignment=warning
+org.eclipse.jdt.core.compiler.problem.noImplicitStringConversion=warning
+org.eclipse.jdt.core.compiler.problem.nonExternalizedStringLiteral=ignore
+org.eclipse.jdt.core.compiler.problem.nonnullParameterAnnotationDropped=warning
+org.eclipse.jdt.core.compiler.problem.nonnullTypeVariableFromLegacyInvocation=warning
+org.eclipse.jdt.core.compiler.problem.nullAnnotationInferenceConflict=error
+org.eclipse.jdt.core.compiler.problem.nullReference=warning
+org.eclipse.jdt.core.compiler.problem.nullSpecViolation=error
+org.eclipse.jdt.core.compiler.problem.nullUncheckedConversion=warning
+org.eclipse.jdt.core.compiler.problem.overridingPackageDefaultMethod=warning
+org.eclipse.jdt.core.compiler.problem.parameterAssignment=ignore
+org.eclipse.jdt.core.compiler.problem.pessimisticNullAnalysisForFreeTypeVariables=warning
+org.eclipse.jdt.core.compiler.problem.possibleAccidentalBooleanAssignment=ignore
+org.eclipse.jdt.core.compiler.problem.potentialNullReference=ignore
+org.eclipse.jdt.core.compiler.problem.potentiallyUnclosedCloseable=ignore
+org.eclipse.jdt.core.compiler.problem.rawTypeReference=warning
+org.eclipse.jdt.core.compiler.problem.redundantNullAnnotation=warning
+org.eclipse.jdt.core.compiler.problem.redundantNullCheck=ignore
+org.eclipse.jdt.core.compiler.problem.redundantSpecificationOfTypeArguments=ignore
+org.eclipse.jdt.core.compiler.problem.redundantSuperinterface=ignore
+org.eclipse.jdt.core.compiler.problem.reportMethodCanBePotentiallyStatic=ignore
+org.eclipse.jdt.core.compiler.problem.reportMethodCanBeStatic=ignore
+org.eclipse.jdt.core.compiler.problem.reportPreviewFeatures=ignore
+org.eclipse.jdt.core.compiler.problem.specialParameterHidingField=disabled
+org.eclipse.jdt.core.compiler.problem.staticAccessReceiver=warning
+org.eclipse.jdt.core.compiler.problem.suppressOptionalErrors=disabled
+org.eclipse.jdt.core.compiler.problem.suppressWarnings=enabled
+org.eclipse.jdt.core.compiler.problem.suppressWarningsNotFullyAnalysed=info
+org.eclipse.jdt.core.compiler.problem.syntacticNullAnalysisForFields=disabled
+org.eclipse.jdt.core.compiler.problem.syntheticAccessEmulation=ignore
+org.eclipse.jdt.core.compiler.problem.terminalDeprecation=warning
+org.eclipse.jdt.core.compiler.problem.typeParameterHiding=warning
+org.eclipse.jdt.core.compiler.problem.unavoidableGenericTypeProblems=enabled
+org.eclipse.jdt.core.compiler.problem.uncheckedTypeOperation=warning
+org.eclipse.jdt.core.compiler.problem.unclosedCloseable=warning
+org.eclipse.jdt.core.compiler.problem.undocumentedEmptyBlock=ignore
+org.eclipse.jdt.core.compiler.problem.unhandledWarningToken=warning
+org.eclipse.jdt.core.compiler.problem.unlikelyCollectionMethodArgumentType=warning
+org.eclipse.jdt.core.compiler.problem.unlikelyCollectionMethodArgumentTypeStrict=disabled
+org.eclipse.jdt.core.compiler.problem.unlikelyEqualsArgumentType=info
+org.eclipse.jdt.core.compiler.problem.unnecessaryElse=ignore
+org.eclipse.jdt.core.compiler.problem.unnecessaryTypeCheck=ignore
+org.eclipse.jdt.core.compiler.problem.unqualifiedFieldAccess=ignore
+org.eclipse.jdt.core.compiler.problem.unstableAutoModuleName=warning
+org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownException=ignore
+org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionExemptExceptionAndThrowable=enabled
+org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionIncludeDocCommentReference=enabled
+org.eclipse.jdt.core.compiler.problem.unusedDeclaredThrownExceptionWhenOverriding=disabled
+org.eclipse.jdt.core.compiler.problem.unusedExceptionParameter=ignore
+org.eclipse.jdt.core.compiler.problem.unusedImport=warning
+org.eclipse.jdt.core.compiler.problem.unusedLabel=warning
+org.eclipse.jdt.core.compiler.problem.unusedLocal=warning
+org.eclipse.jdt.core.compiler.problem.unusedObjectAllocation=ignore
+org.eclipse.jdt.core.compiler.problem.unusedParameter=ignore
+org.eclipse.jdt.core.compiler.problem.unusedParameterIncludeDocCommentReference=enabled
+org.eclipse.jdt.core.compiler.problem.unusedParameterWhenImplementingAbstract=disabled
+org.eclipse.jdt.core.compiler.problem.unusedParameterWhenOverridingConcrete=disabled
+org.eclipse.jdt.core.compiler.problem.unusedPrivateMember=warning
+org.eclipse.jdt.core.compiler.problem.unusedTypeParameter=ignore
+org.eclipse.jdt.core.compiler.problem.unusedWarningToken=warning
+org.eclipse.jdt.core.compiler.problem.varargsArgumentNeedCast=warning
 org.eclipse.jdt.core.compiler.release=disabled
 org.eclipse.jdt.core.compiler.source=1.8

.settings/org.eclipse.wst.common.component

@@ -1,11 +1,31 @@
 <?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.5.0">
-    <wb-module deploy-name="messages">
+            
+    
+    <wb-module deploy-name="messages-2.5.0-SNAPSHOT">
+                        
+        
         <wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/>
+                        
+        
         <wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/>
+                        
+        
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/>
+                        
+        
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
+                        
+        
         <wb-resource deploy-path="/WEB-INF/classes" source-path="/target/generated-sources/gwt"/>
+                        
+        
         <property name="java-output-path" value="/message-conversations/target/message-conversations-0.0.1-SNAPSHOT/WEB-INF/classes"/>
+                        
+        
         <property name="context-root" value="messages"/>
+                    
+    
     </wb-module>
+        
+
 </project-modules>

pom.xml

@@ -160,6 +160,11 @@
 			<groupId>com.github.gwtmaterialdesign</groupId>
 			<artifactId>gwt-material-addins</artifactId>
 			<version>${gwt-material.version}</version>
+		</dependency>
+		<dependency>
+            <groupId>com.github.gwtmaterialdesign</groupId>
+            <artifactId>gwt-material-table</artifactId>
+            <version>${gwt-material.version}</version>
         </dependency>
 		<dependency>
 			<groupId>org.gcube.portal</groupId>
@@ -195,11 +200,12 @@
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-log4j12</artifactId>
+			<version>1.7.5</version>
 		</dependency>
 		<dependency>
 			<groupId>org.slf4j</groupId>
 			<artifactId>slf4j-api</artifactId>
-			<scope>provided</scope>
+			<version>1.7.5</version>
 		</dependency>
 		<dependency>
 			<groupId>junit</groupId>

src/main/java/org/gcube/portets/user/message_conversations/client/MessageService.java

@@ -4,6 +4,7 @@ import java.util.ArrayList;
 
 import org.gcube.portets.user.message_conversations.shared.ConvMessage;
 import org.gcube.portets.user.message_conversations.shared.CurrUserAndPortalUsersWrapper;
+import org.gcube.portets.user.message_conversations.shared.MessagesWindow;
 import org.gcube.portets.user.message_conversations.shared.WSUser;
 
 import com.google.gwt.user.client.rpc.RemoteService;
@@ -13,6 +14,7 @@ import com.google.gwt.user.client.rpc.RemoteService;
  */
 public interface MessageService extends RemoteService {
 
+  MessagesWindow getMessagesWindows(boolean sent, int limit, int offset);
   ArrayList<ConvMessage> getMessages(boolean sent);
   ConvMessage getMessageById(String messageId, boolean sent);
   CurrUserAndPortalUsersWrapper getWorkspaceUsers();

src/main/java/org/gcube/portets/user/message_conversations/client/autocomplete/MaterialAutoComplete.java

@@ -1,18 +1,49 @@
 package org.gcube.portets.user.message_conversations.client.autocomplete;
 
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+
 import com.google.gwt.dom.client.Document;
-import com.google.gwt.event.dom.client.*;
+import com.google.gwt.event.dom.client.BlurEvent;
-import com.google.gwt.event.logical.shared.*;
+import com.google.gwt.event.dom.client.BlurHandler;
+import com.google.gwt.event.dom.client.ClickEvent;
+import com.google.gwt.event.dom.client.FocusEvent;
+import com.google.gwt.event.dom.client.FocusHandler;
+import com.google.gwt.event.dom.client.KeyCodes;
+import com.google.gwt.event.dom.client.KeyUpHandler;
+import com.google.gwt.event.logical.shared.HasSelectionHandlers;
+import com.google.gwt.event.logical.shared.SelectionEvent;
+import com.google.gwt.event.logical.shared.SelectionHandler;
+import com.google.gwt.event.logical.shared.ValueChangeEvent;
+import com.google.gwt.event.logical.shared.ValueChangeHandler;
 import com.google.gwt.event.shared.HandlerRegistration;
 import com.google.gwt.user.client.DOM;
-import com.google.gwt.user.client.ui.*;
+import com.google.gwt.user.client.ui.FlowPanel;
+import com.google.gwt.user.client.ui.SuggestBox;
+import com.google.gwt.user.client.ui.SuggestOracle;
 import com.google.gwt.user.client.ui.SuggestOracle.Suggestion;
+import com.google.gwt.user.client.ui.TextBox;
+import com.google.gwt.user.client.ui.Widget;
+
 import gwt.material.design.addins.client.MaterialAddins;
 import gwt.material.design.addins.client.autocomplete.constants.AutocompleteType;
 import gwt.material.design.addins.client.base.constants.AddinsCssName;
 import gwt.material.design.client.MaterialDesignBase;
-import gwt.material.design.client.base.*;
+import gwt.material.design.client.base.AbstractValueWidget;
-import gwt.material.design.client.base.mixin.*;
+import gwt.material.design.client.base.HasPlaceholder;
+import gwt.material.design.client.base.HasProgress;
+import gwt.material.design.client.base.HasReadOnly;
+import gwt.material.design.client.base.HasType;
+import gwt.material.design.client.base.MaterialWidget;
+import gwt.material.design.client.base.mixin.CssTypeMixin;
+import gwt.material.design.client.base.mixin.FocusableMixin;
+import gwt.material.design.client.base.mixin.ProgressMixin;
+import gwt.material.design.client.base.mixin.ReadOnlyMixin;
 import gwt.material.design.client.constants.CssName;
 import gwt.material.design.client.constants.IconType;
 import gwt.material.design.client.constants.ProgressType;
@@ -23,9 +54,6 @@ import gwt.material.design.client.ui.html.Label;
 import gwt.material.design.client.ui.html.ListItem;
 import gwt.material.design.client.ui.html.UnorderedList;
 
-import java.util.*;
-import java.util.Map.Entry;
-
 /**
  *
  * @author kevzlou7979
@@ -62,7 +90,6 @@ public class MaterialAutoComplete extends AbstractValueWidget<List<? extends Sug
     private boolean directInputAllowed = true;
     private MaterialChipProvider chipProvider = new DefaultMaterialChipProvider();
 
-    private final ErrorMixin<AbstractValueWidget, MaterialLabel> errorMixin = new ErrorMixin<>(this, errorLabel, list, placeholderLabel);
    
     private FocusableMixin<MaterialWidget> focusableMixin;
     private ReadOnlyMixin<MaterialAutoComplete, TextBox> readOnlyMixin;
@@ -684,10 +711,6 @@ public class MaterialAutoComplete extends AbstractValueWidget<List<? extends Sug
         itemBox.setEnabled(enabled);
     }
 
-    @Override
-    public ErrorMixin<AbstractValueWidget, MaterialLabel> getErrorMixin() {
-        return errorMixin;
-    }
    
     public Label getPlaceholderLabel() {
         return placeholderLabel;

src/main/java/org/gcube/portets/user/message_conversations/client/ui/ApplicationView.java

@@ -12,7 +12,12 @@ import org.gcube.portets.user.message_conversations.client.ui.resources.Messages
 import org.gcube.portets.user.message_conversations.shared.ConvMessage;
 import org.gcube.portets.user.message_conversations.shared.MessageUserModel;
 
+import com.github.gwtbootstrap.client.ui.IconCell;
+import com.github.gwtbootstrap.client.ui.constants.IconSize;
+import com.google.gwt.cell.client.CheckboxCell;
+import com.google.gwt.cell.client.TextCell;
 import com.google.gwt.core.client.GWT;
+import com.google.gwt.dom.client.Style.Unit;
 
 /*
  * #%L
@@ -38,9 +43,16 @@ import com.google.gwt.core.client.GWT;
 import com.google.gwt.event.dom.client.ClickEvent;
 import com.google.gwt.event.logical.shared.ResizeEvent;
 import com.google.gwt.event.logical.shared.ResizeHandler;
+import com.google.gwt.safehtml.shared.SafeHtmlUtils;
 import com.google.gwt.uibinder.client.UiBinder;
 import com.google.gwt.uibinder.client.UiField;
 import com.google.gwt.uibinder.client.UiHandler;
+import com.google.gwt.user.cellview.client.CellTable;
+import com.google.gwt.user.cellview.client.Column;
+import com.google.gwt.user.cellview.client.RowStyles;
+import com.google.gwt.user.cellview.client.ColumnSortEvent.ListHandler;
+import com.google.gwt.user.cellview.client.HasKeyboardPagingPolicy.KeyboardPagingPolicy;
+import com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy.KeyboardSelectionPolicy;
 import com.google.gwt.user.client.Window;
 import com.google.gwt.user.client.rpc.AsyncCallback;
 import com.google.gwt.user.client.rpc.ServiceDefTarget;
@@ -50,19 +62,22 @@ import com.google.gwt.user.client.ui.HTMLPanel;
 import com.google.gwt.user.client.ui.RootPanel;
 import com.google.gwt.user.client.ui.ScrollPanel;
 import com.google.gwt.user.client.ui.Widget;
+import com.google.gwt.view.client.DefaultSelectionEventManager;
+import com.google.gwt.view.client.MultiSelectionModel;
+import com.google.gwt.view.client.SelectionModel;
 
 import gwt.material.design.client.constants.IconType;
 import gwt.material.design.client.constants.Position;
+import gwt.material.design.client.data.DataSource;
 import gwt.material.design.client.ui.MaterialAnchorButton;
 import gwt.material.design.client.ui.MaterialBadge;
-import gwt.material.design.client.ui.MaterialCollection;
 import gwt.material.design.client.ui.MaterialFAB;
 import gwt.material.design.client.ui.MaterialLink;
 import gwt.material.design.client.ui.MaterialProgress;
-import gwt.material.design.client.ui.MaterialRow;
 import gwt.material.design.client.ui.MaterialToast;
 import gwt.material.design.client.ui.animate.MaterialAnimation;
 import gwt.material.design.client.ui.animate.Transition;
+
 /**
  * @author Massimiliano Assante, CNR-ISTI
  */
@@ -83,20 +98,28 @@ public class ApplicationView extends Composite {
 
 
 	@UiField ScrollPanel scrollerPanel;
-	@UiField MaterialRow rightPanel;
+	//@UiField MaterialRow rightPanel;
 	@UiField HTMLPanel htmlPanel;
 	@UiField MaterialFAB FAB;
 	@UiField MaterialLink menu, newMessage, switcher;
 	@UiField MaterialAnchorButton replyAll, reply, forward;
-	@UiField MaterialCollection messagesCollection;
+	@UiField MaterialProgress messageLoader;
-	@UiField MaterialProgress messageLoader, messagesLoader;
 	@UiField MaterialBadge badge;
+	@UiField ShowMorePagerPanel pagerPanel;
+
+	CellTable<ConvMessage> sentCellList;
+
+	MessageProvider mp;
+
+	DataSource<ConvMessage> dataSource = new MessageDataSource(false, convService);
+	//InfiniteScrollView scrollView = new InfiniteScrollView(dataSource);
 
 	private ConvMessage currentSelected;
 	private DisplayMessage displayMessage;
 	private WriteMessage newMessageDisplay;
 	private boolean isSendTo = false;
 
+	
 	public ApplicationView(String... sendToUserNames) {
 		initWidget(uiBinder.createAndBindUi(this));
 		((ServiceDefTarget) convService).setServiceEntryPoint(Utils.getServiceEntryPoint());
@@ -125,16 +148,96 @@ public class ApplicationView extends Composite {
 			isSendTo = true;
 			messageLoader.setVisible(false);
 		}
+
+		GWT.log("application initialized");
+
+		sentCellList = new  CellTable<ConvMessage>(ConvMessage.KEY_PROVIDER);
+		sentCellList.setPageSize(100);
+		sentCellList.setKeyboardPagingPolicy(KeyboardPagingPolicy.INCREASE_RANGE);
+		sentCellList.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.BOUND_TO_SELECTION);
+		sentCellList.setWidth("100%", false);
+		
+		
+		
 		readUserMessages(false, isSendTo);	
 
 	}
 
+	
+	/**
+	   * Add the columns to the table.
+	   */
+	  private void initTableColumns(CellTable<ConvMessage> cellTable
+	      ,final SelectionModel<ConvMessage> selectionModel /*,
+	      ListHandler<ConvMessage> sortHandler*/) {
+	    // Checkbox column. This table will uses a checkbox column for selection.
+	    // Alternatively, you can call cellTable.setSelectionEnabled(true) to enable
+	    // mouse selection.
+	    
+		cellTable.setRowStyles(new RowStyles<ConvMessage>() {
+			
+			@Override
+			public String getStyleNames(ConvMessage row, int rowIndex) {
+				if (row.isRead())
+					return "{style.read}";
+				else  return "";
+			}
+		});  
+		Column<ConvMessage, Boolean> checkColumn = new Column<ConvMessage, Boolean>(
+	        new CheckboxCell(true, false)) {
+	      @Override
+	      public Boolean getValue(ConvMessage object) {
+	        // Get the value from the selection model.
+	        return selectionModel.isSelected(object);
+	    	//return false;
+	      }
+	    };
+	    cellTable.addColumn(checkColumn, SafeHtmlUtils.fromSafeConstant("</br>"));
+	    cellTable.setColumnWidth(checkColumn, 80, Unit.PX);
+
+	    // From.
+	    Column<ConvMessage, String> fromColumn = new Column<ConvMessage, String>(
+	        new TextCell()) {
+	      @Override
+	      public String getValue(ConvMessage object) {
+	        return object.getOwner().getFullName();
+	      }
+	    };
+	    
+	    cellTable.addColumn(fromColumn, "From");
+	    cellTable.setColumnWidth(fromColumn, 40, Unit.PCT);
+
+	    // Subject.
+	    Column<ConvMessage, String> subjectColumn = new Column<ConvMessage, String>(
+	        new TextCell()) {
+	      @Override
+	      public String getValue(ConvMessage object) {
+	        return object.getSubject();
+	      }
+	    };
+	    cellTable.addColumn(subjectColumn, "Subject");
+	    cellTable.setColumnWidth(subjectColumn, 200, Unit.PCT);
+	    
+	    // date.
+	    Column<ConvMessage, String> dateColumn = new Column<ConvMessage, String>(
+	        new TextCell()) {
+	      @Override
+	      public String getValue(ConvMessage object) {
+	        return Utils.getFormatteDate(object.getDate());
+	      }
+	    };
+	    cellTable.addColumn(dateColumn, "Date");
+	    cellTable.setColumnWidth(subjectColumn, 20, Unit.PCT);
+	    
+	  }
+	    	
+
 	/**
 	 * 
 	 * @param sent
-	 */
+	 *
+	 **/
 	public void readUserMessages(final boolean sent, boolean isSendTo) {
-		messagesLoader.setVisible(true);
 		convService.getMessages(sent, new AsyncCallback<ArrayList<ConvMessage>>() {
 			@Override
 			public void onFailure(Throwable arg0) {
@@ -144,53 +247,35 @@ public class ApplicationView extends Composite {
 			@Override
 			public void onSuccess(ArrayList<ConvMessage> messages) {
 				if (messages != null) {
-					showMessages(messages, sent);
+					totalMessages = messages.size();
-					if (!isSendTo) {
+					mp = new MessageProvider(messages);
-						if (messages.size() > 0)
+					mp.addDataDisplay(sentCellList);
-							readUserMessage(messages.get(0).getId(), sent);
+					
-						else {
+					// Add a selection model so we can select cells.
-							writeWelcomeMessage();
+				    final SelectionModel<ConvMessage> selectionModel = new MultiSelectionModel<ConvMessage>(ConvMessage.KEY_PROVIDER);
+				    sentCellList.setSelectionModel(selectionModel,
+				        DefaultSelectionEventManager.<ConvMessage> createCheckboxManager());
+
+					
+					initTableColumns(sentCellList, selectionModel);
+					
+					pagerPanel.setDisplay(sentCellList);
+					pagerPanel.setIncrementSize(50);
 					messageLoader.setVisible(false);
-						}
+					readUserMessage(mp.getDataProvider().getList().get(0).getId(), sent);
-					}
 				} else {
 					showErrorOccurred();
 				}
 			}
 		});
 	}	
+
 	private void showErrorOccurred() {
-		messagesCollection.clear();
+		//messagesCollection.clear();
-		messagesLoader.setVisible(false);
 		messageLoader.setVisible(false);
 		hideSidePanel();
 		writeErrorMessage();
 	}
-	/**
-	 * 
-	 * @param messages
-	 * @param sent
-	 */
-	public void showMessages(ArrayList<ConvMessage> messages, boolean sent) {
-		messagesCollection.clear();
-		messagesLoader.setVisible(false);
-		messagesCollection.setVisible(true);
-		int scrollerHeight = Window.getClientHeight() - 100;
-		scrollerPanel.setHeight(scrollerHeight+"px"); 
-		for (ConvMessage convMessage : messages) {
-			messagesCollection.add(new MessageItem(convMessage, messagesCollection, this, sent));
-			if (! (sent || convMessage.isRead()))
-				unreadMessages++;
-			totalMessages++;
-		}
-		if (messages.size() > 0) {
-			MessageItem first = (MessageItem) messagesCollection.getChildrenList().get(0);
-			first.setSelected(true);
-		} else {
-
-		}
-		updateBadge(sent);
-	}
 	/**
 	 * 
 	 * @param sent 
@@ -321,7 +406,7 @@ public class ApplicationView extends Composite {
 	private void displayNewOrReplyMessage() {
 		WRITING_MESSAGE = true;
 		FAB.setVisible(false);
-		messagesCollection.clearActive();
+		//messagesCollection.clearActive();
 		scrollerPanel.clear();
 		scrollerPanel.add(newMessageDisplay);
 		newMessageDisplay.setFocusOnUsersInput();
@@ -382,7 +467,6 @@ public class ApplicationView extends Composite {
 		displayMessage.getMainPanel().setGrid("l8 m12 s12");
 		newMessageDisplay.getMainPanel().setLeft(350);
 		newMessageDisplay.getMainPanel().setGrid("l8 m12 s12");
-		rightPanel.setLeft(0);
 		toggle = ! toggle;
 	}
 
@@ -392,7 +476,6 @@ public class ApplicationView extends Composite {
 		newMessageDisplay.getMainPanel().setLeft(0);
 		newMessageDisplay.getMainPanel().setGrid("l12 s12 m12");
 
-		rightPanel.setLeft(-350);
 		toggle = ! toggle;
 	}
 
@@ -409,9 +492,9 @@ public class ApplicationView extends Composite {
 		FAB.setVisible(false);
 		displayMessage.showMessage(welcomeMessage);
 		welcomeMessage.setContent(MessagesResources.WELCOME_MESSAGE.substring(0, 102)+ " ...");
-		MessageItem item = new MessageItem(welcomeMessage, messagesCollection, this, false);
+		MessageItem item = new MessageItem(welcomeMessage, false);
-		item.hideMessageMenu();
+		//item.hideMessageMenu();
-		messagesCollection.add(item);
+		//messagesCollection.add(item);
 		totalMessages++;
 		updateBadge(false);
 	}
@@ -425,9 +508,9 @@ public class ApplicationView extends Composite {
 		FAB.setVisible(false);
 		displayMessage.showMessage(welcomeMessage);
 		welcomeMessage.setContent(MessagesResources.ERROR_MESSAGE.substring(0, 102)+ " ...");
-		MessageItem item = new MessageItem(welcomeMessage, messagesCollection, this, false);
+		MessageItem item = new MessageItem(welcomeMessage, false);
-		item.hideMessageMenu();
+		//item.hideMessageMenu();
-		messagesCollection.add(item);
+		//messagesCollection.add(item);
 		totalMessages++;
 		updateBadge(false);
 	}

src/main/java/org/gcube/portets/user/message_conversations/client/ui/ApplicationView.ui.xml

@@ -1,7 +1,9 @@
 <ui:UiBinder xmlns:ui='urn:ui:com.google.gwt.uibinder'
-	xmlns:g='urn:import:com.google.gwt.user.client.ui' xmlns:m="urn:import:gwt.material.design.client.ui"
+	xmlns:g='urn:import:com.google.gwt.user.client.ui'
+	xmlns:m="urn:import:gwt.material.design.client.ui"
 	xmlns:ma="urn:import:gwt.material.design.addins.client"
-	xmlns:mc="urn:import:org.gcube.portets.user.message_conversations.client.autocomplete">
+	xmlns:mc="urn:import:org.gcube.portets.user.message_conversations.client.autocomplete"
+	xmlns:s="urn:import:org.gcube.portets.user.message_conversations.client.ui">
 
 	<ui:style>
 	.animation {
@@ -21,14 +23,17 @@
 	}
 	
 	.marginTop {
-		margin-top: 0px;
+		margin-top: 60px;
-		min-height: 850px;
 	}
 	
 	.overflowXHidden {
 		overflow-x: hidden !important; /* needed in windows */
 	}
 	
+	.read {
+		font-weight: bold; font-style: italic;
+	}
+	
 	.modalTitle {
 		font-size: 2em;
 	}
@@ -38,63 +43,61 @@
 		padding: 50px;
 	}
 	</ui:style>
-	<g:HTMLPanel ui:field="htmlPanel">
+	<g:HTMLPanel ui:field="htmlPanel" >
 		<!-- TOP BAR -->
-		<m:MaterialHeader ui:field="header">
+			<m:MaterialNavBar ui:field="navBar"
-			<m:MaterialNavBar ui:field="navBar" layoutPosition="FIXED"
+				layoutPosition="RELATIVE" addStyleNames="{style.topBar}" height="60"
-				addStyleNames="{style.topBar}" height="60" backgroundColor="WHITE">
+				backgroundColor="WHITE">
-				<m:MaterialNavSection float="LEFT" showOn="SHOW_ON_MED_DOWN">
+				<m:MaterialNavSection float="LEFT"
-					<m:MaterialLink iconType="MENU" iconColor="LIGHT_BLUE_DARKEN_2"
+					showOn="SHOW_ON_MED_DOWN">
-						paddingLeft="25" waves="DEFAULT" ui:field="menu" hideOn="HIDE_ON_MED_DOWN" />
+					<m:MaterialLink iconType="MENU"
-					<m:MaterialLink iconType="INBOX" textColor="LIGHT_BLUE_DARKEN_2"
+						iconColor="LIGHT_BLUE_DARKEN_2" paddingLeft="25" waves="DEFAULT"
-						ui:field="switcher" waves="DEFAULT" paddingLeft="25">
+						ui:field="menu" hideOn="HIDE_ON_MED_DOWN" />
-						<m:MaterialBadge text="22 unread" backgroundColor="LIGHT_BLUE_DARKEN_2"
+					<m:MaterialLink iconType="INBOX"
-							textColor="WHITE" circle="false" ui:field="badge" visible="false"
+						textColor="LIGHT_BLUE_DARKEN_2" ui:field="switcher"
+						waves="DEFAULT" paddingLeft="25">
+						<m:MaterialBadge text="22 unread"
+							backgroundColor="LIGHT_BLUE_DARKEN_2" textColor="WHITE"
+							circle="false" ui:field="badge" visible="false"
 							hideOn="HIDE_ON_MED_DOWN" />
 					</m:MaterialLink>
 					<m:MaterialLink ui:field="newMessage" text="New"
-						showOn="SHOW_ON_MED_DOWN" iconType="MESSAGE" textColor="LIGHT_BLUE_DARKEN_2"
+						showOn="SHOW_ON_MED_DOWN" iconType="MESSAGE"
-						waves="LIGHT" />
+						textColor="LIGHT_BLUE_DARKEN_2" waves="LIGHT" />
 				</m:MaterialNavSection>
 			</m:MaterialNavBar>
-		</m:MaterialHeader>
-
 		
+		<div height='100%'>
 			
 			<!-- SIDE PANEL -->
-		<m:MaterialRow ui:field="rightPanel" overflow="AUTO"
+			<s:ShowMorePagerPanel ui:field='pagerPanel' addStyleNames="{style.overflowXHidden}" height="300px" />
-			depth="995" grid="l3 m3 s12" padding="0" backgroundColor="WHITE"
+			
-			height="100%" layoutPosition="FIXED" top="60" left="0" width="350px"
-			addStyleNames="{style.animation} {style.borderRight}">
-			<m:MaterialProgress type="INDETERMINATE" ui:field="messagesLoader"
-				color="BLUE" />
-			<m:MaterialCollection ui:field="messagesCollection"
-				addStyleNames="{style.marginTop}" visible="false">
-			</m:MaterialCollection>
-		</m:MaterialRow>
 
 			<!-- MAIN WINDOW -->
-		<m:MaterialContainer fontSize="0.8em">
+			<m:MaterialContainer>
-			<m:MaterialRow layoutPosition="RELATIVE" grid="l8 s12 m12"
+				<m:MaterialRow fontSize="0.8em">
-				top="65">
 					<m:MaterialProgress type="INDETERMINATE"
 						ui:field="messageLoader" color="TEAL" />
-				<g:ScrollPanel height="600px" ui:field="scrollerPanel"
+					<g:ScrollPanel  ui:field="scrollerPanel"
 						addStyleNames="{style.overflowXHidden}"></g:ScrollPanel>
 				</m:MaterialRow>
 			</m:MaterialContainer>
 		
+		</div>
 		<!-- FAB -->
 		<m:MaterialFAB ui:field="FAB">
-			<m:MaterialButton type="FLOATING" backgroundColor="RED"
+			<m:MaterialButton type="FLOATING"
-				iconType="REPLY" size="LARGE" />
+				backgroundColor="RED" iconType="REPLY" size="LARGE" />
 			<m:MaterialFABList>
 				<m:MaterialAnchorButton type="FLOATING"
-					waves="LIGHT" backgroundColor="BLUE" ui:field="forward" iconType="FORWARD" />
+					waves="LIGHT" backgroundColor="BLUE" ui:field="forward"
+					iconType="FORWARD" />
 				<m:MaterialAnchorButton type="FLOATING"
-					waves="LIGHT" backgroundColor="AMBER" ui:field="replyAll" iconType="REPLY_ALL" />
+					waves="LIGHT" backgroundColor="AMBER" ui:field="replyAll"
+					iconType="REPLY_ALL" />
 				<m:MaterialAnchorButton type="FLOATING"
-					waves="LIGHT" backgroundColor="TEAL" ui:field="reply" iconType="REPLY" />
+					waves="LIGHT" backgroundColor="TEAL" ui:field="reply"
+					iconType="REPLY" />
 			</m:MaterialFABList>
 		</m:MaterialFAB>
 	</g:HTMLPanel>

src/main/java/org/gcube/portets/user/message_conversations/client/ui/MessageDataSource.java

@@ -0,0 +1,58 @@
+package org.gcube.portets.user.message_conversations.client.ui;
+
+import org.gcube.portets.user.message_conversations.client.MessageServiceAsync;
+import org.gcube.portets.user.message_conversations.shared.ConvMessage;
+import org.gcube.portets.user.message_conversations.shared.MessagesWindow;
+
+import com.google.gwt.core.client.GWT;
+import com.google.gwt.user.client.rpc.AsyncCallback;
+
+import gwt.material.design.client.data.DataSource;
+import gwt.material.design.client.data.loader.LoadCallback;
+import gwt.material.design.client.data.loader.LoadConfig;
+import gwt.material.design.client.data.loader.LoadResult;
+
+
+public class MessageDataSource implements DataSource<ConvMessage> {
+
+	private MessageServiceAsync convService;
+	private boolean sent;
+	
+	public MessageDataSource(boolean sent, MessageServiceAsync convService) {
+		this.convService = convService;
+		this.sent= sent;
+	}
+	
+	
+	
+	@Override
+	public void load(LoadConfig<ConvMessage> loadConfig, LoadCallback<ConvMessage> callback) {
+				
+		convService.getMessagesWindows(this.sent, loadConfig.getOffset(), loadConfig.getLimit(),
+                new AsyncCallback<MessagesWindow>() {
+                    @Override
+                    public void onSuccess(MessagesWindow messages) {
+                        callback.onSuccess(new LoadResult<>(messages.getMessages(), loadConfig.getOffset(), messages.getTotal()));
+                    }
+
+                    @Override
+                    public void onFailure(Throwable throwable) {
+                        GWT.log("Getting people async call failed.", throwable);
+                        callback.onFailure(throwable);
+                    }
+                });
+	}
+
+
+
+
+
+
+
+	@Override
+	public boolean useRemoteSort() {
+		// TODO Auto-generated method stub
+		return false;
+	}
+
+}

src/main/java/org/gcube/portets/user/message_conversations/client/ui/MessageItem.java

@@ -23,7 +23,6 @@ import com.google.gwt.user.client.ui.Composite;
 import com.google.gwt.user.client.ui.Widget;
 
 import gwt.material.design.client.constants.Color;
-import gwt.material.design.client.ui.MaterialCollection;
 import gwt.material.design.client.ui.MaterialCollectionItem;
 import gwt.material.design.client.ui.MaterialDropDown;
 import gwt.material.design.client.ui.MaterialIcon;
@@ -43,8 +42,6 @@ public class MessageItem extends Composite  {
 
 	private boolean deleteClicked = true;
 
-	private ApplicationView ap;
-	private MaterialCollection parentCollection;
 	private ConvMessage myMessage;
 	private boolean sent;
 
@@ -64,13 +61,12 @@ public class MessageItem extends Composite  {
 	MessagesResources images = GWT.create(MessagesResources.class);
 
 
-	public MessageItem(final ConvMessage m, MaterialCollection parentCollection, ApplicationView ap, boolean sent) {
+	public MessageItem(final ConvMessage m, boolean sent) {
 		initWidget(uiBinder.createAndBindUi(this));
 		item.getElement().getStyle().setCursor(Cursor.POINTER);
 		this.sent = sent;
 		this.myMessage = m;
-		this.ap = ap;
+		//this.parentCollection = parentCollection;
-		this.parentCollection = parentCollection;
 		if (m.hasAttachments())
 			attachmentsIcon.setVisibility(Visibility.VISIBLE);
 		if (!sent && !m.isRead())
@@ -128,7 +124,7 @@ public class MessageItem extends Composite  {
 				event.stopPropagation();
 			}
 		});
-
+/*
 		deleteButton.addClickHandler(new ClickHandler() {	
 			@Override
 			public void onClick(ClickEvent event) {
@@ -145,26 +141,14 @@ public class MessageItem extends Composite  {
 				new MaterialToast(()->{doDelete(m.getSubject());}, link).toast("Deleting Message ("+m.getSubject()+")");
 				item.setVisible(false);
 			}
-		});
+		}); */
 		dd.getElement().getStyle().setWidth(300, Unit.PX);
 		String activator = "activate"+Random.nextInt();
 		dd.setActivator(activator);
 		messageActionIcon.setActivates(activator);
 	}
 
-
+/*
-	@UiHandler("setUnreadButton")
-	void onSetUnread(ClickEvent e) {
-		e.stopPropagation();
-		if (myMessage.isRead()) {
-			ap.setMessageUnread(myMessage, this.sent);
-			myMessage.setRead(false);
-			item.addStyleName("unread-message");
-		} else {
-			Window.alert("Message is marked as unread already.");
-		}
-	}
-
 	private void doDelete(String subject) {
 		if (deleteClicked) {
 			ap.deleteMessage(myMessage, this.sent);
@@ -172,6 +156,7 @@ public class MessageItem extends Composite  {
 		else
 			deleteClicked = true;
 	}
+*/
 	
 	public void setSelected(boolean active) {
 		item.setBackgroundColor(Color.WHITE);
@@ -180,22 +165,14 @@ public class MessageItem extends Composite  {
 		myMessage.setRead(true);
 	}
 
+/*	
 	@UiHandler("item")
 	void onClickedMessage(ClickEvent e) {
 		checkHideSideBarOnMobile();
-		parentCollection.clearActive();
+		//parentCollection.clearActive();
 		ap.readUserMessage(myMessage.getId(), this.sent);
 		setSelected(true);
 		myMessage.setRead(true);
 	}
-
+*/
-	private void checkHideSideBarOnMobile() {
-		if (Utils.isMobile())
-			ap.hideSidePanel();
-	}
-
-	public void hideMessageMenu() {
-		messageActionIcon.setVisible(false);
-	}
-
 }

src/main/java/org/gcube/portets/user/message_conversations/client/ui/MessageProvider.java

@@ -0,0 +1,79 @@
+package org.gcube.portets.user.message_conversations.client.ui;
+
+import java.util.List;
+
+import org.gcube.portets.user.message_conversations.shared.ConvMessage;
+
+import com.google.gwt.view.client.HasData;
+import com.google.gwt.view.client.ListDataProvider;
+
+/**
+ * The data source for contact information used in the sample.
+ */
+public class MessageProvider {
+
+  /**
+   * The singleton instance of the database.
+   
+  private static MessageProvider instance;
+
+  
+   * Get the singleton instance of the contact database.
+   * 
+   * @return the singleton instance
+   
+  public static MessageProvider get() {
+    if (instance == null) {
+      instance = new MessageProvider();
+    }
+    return instance;
+  } */
+
+  /**
+   * The provider that holds the list of contacts in the database.
+   */
+  private ListDataProvider<ConvMessage> dataProvider = new ListDataProvider<ConvMessage>();
+
+ 
+  public MessageProvider(List<ConvMessage> messages) {
+	  List<ConvMessage> contacts = dataProvider.getList();
+	  contacts.addAll(messages);
+  }
+
+  /**
+   * Add a new contact.
+   * 
+   * @param contact the contact to add.
+   */
+  public void addMessage(ConvMessage message) {
+    List<ConvMessage> contacts = dataProvider.getList();
+    // Remove the contact first so we don't add a duplicate.
+    contacts.remove(message);
+    contacts.add(message);
+  }
+
+  /**
+   * Add a display to the database. The current range of interest of the display
+   * will be populated with data.
+   * 
+   * @param display a {@Link HasData}.
+   */
+  public void addDataDisplay(HasData<ConvMessage> display) {
+    dataProvider.addDataDisplay(display);
+  }
+
+
+  public ListDataProvider<ConvMessage> getDataProvider() {
+    return dataProvider;
+  }
+
+ 
+  /**
+   * Refresh all displays.
+   */
+  public void refreshDisplays() {
+    dataProvider.refresh();
+  }
+
+
+}

src/main/java/org/gcube/portets/user/message_conversations/client/ui/ShowMorePagerPanel.java

@@ -0,0 +1,105 @@
+package org.gcube.portets.user.message_conversations.client.ui;
+
+import com.google.gwt.core.client.GWT;
+import com.google.gwt.event.dom.client.ScrollEvent;
+import com.google.gwt.event.dom.client.ScrollHandler;
+import com.google.gwt.user.cellview.client.AbstractPager;
+import com.google.gwt.user.client.ui.ScrollPanel;
+import com.google.gwt.user.client.ui.Widget;
+import com.google.gwt.view.client.HasRows;
+
+/**
+ * A scrolling pager that automatically increases the range every time the
+ * scroll bar reaches the bottom.
+ */
+public class ShowMorePagerPanel extends AbstractPager {
+
+  /**
+   * The default increment size.
+   */
+  private static final int DEFAULT_INCREMENT = 20;
+
+  /**
+   * The increment size.
+   */
+  private int incrementSize = DEFAULT_INCREMENT;
+
+  /**
+   * The last scroll position.
+   */
+  private int lastScrollPos = 0;
+
+  /**
+   * The scrollable panel.
+   */
+  private final ScrollPanel scrollable = new ScrollPanel();
+
+  /**
+   * Construct a new {@link ShowMorePagerPanel}.
+   */
+  public ShowMorePagerPanel() {
+    initWidget(scrollable);
+
+    // Do not let the scrollable take tab focus.
+    scrollable.getElement().setTabIndex(-1);
+
+    // Handle scroll events.
+    scrollable.addScrollHandler(new ScrollHandler() {
+      public void onScroll(ScrollEvent event) {
+        // If scrolling up, ignore the event.
+        int oldScrollPos = lastScrollPos;
+        lastScrollPos = scrollable.getVerticalScrollPosition();
+        if (oldScrollPos >= lastScrollPos) {
+          return;
+        }
+
+        HasRows display = getDisplay();
+        if (display == null) {
+          return;
+        }
+        int maxScrollTop = scrollable.getWidget().getOffsetHeight()
+            - scrollable.getOffsetHeight();
+        if (lastScrollPos >= maxScrollTop) {
+          // We are near the end, so increase the page size.
+          int newPageSize = Math.min(
+              display.getVisibleRange().getLength() + incrementSize,
+              display.getRowCount());
+          display.setVisibleRange(0, newPageSize);
+        }
+      }
+    });
+  }
+
+  /**
+   * Get the number of rows by which the range is increased when the scrollbar
+   * reaches the bottom.
+   *
+   * @return the increment size
+   */
+  public int getIncrementSize() {
+    return incrementSize;
+  }
+
+  @Override
+  public void setDisplay(HasRows display) {
+    assert display instanceof Widget : "display must extend Widget";
+    scrollable.setWidget((Widget) display);
+    super.setDisplay(display);
+  }
+
+  /**
+   * Set the number of rows by which the range is increased when the scrollbar
+   * reaches the bottom.
+   *
+   * @param incrementSize the incremental number of rows
+   */
+  public void setIncrementSize(int incrementSize) {
+	  GWT.log("increment of "+ incrementSize);
+	  this.incrementSize = incrementSize;
+  }
+
+  @Override
+  protected void onRangeOrRowCountChanged() {
+	  GWT.log("range changed ...");
+  }
+}

src/main/java/org/gcube/portets/user/message_conversations/client/ui/WriteMessage.ui.xml

@@ -23,12 +23,12 @@
 		layoutPosition="RELATIVE" marginBottom="0" grid="l8 m12 s12"
 		paddingLeft="10" paddingRight="60" marginLeft="5" marginTop="-5"
 		addStyleNames="{style.animation} message-metadata" left="350">
-		<m:MaterialModalFooter textAlign="RIGHT">
+		<m:MaterialFooter textAlign="RIGHT">
 			<m:MaterialButton ui:field="btnCloseModal" text="Cancel"
 				type="FLAT" textColor="BLACK" waves="DEFAULT"/>
 			<m:MaterialButton text="Send" type="FLAT" textColor="WHITE"
 				backgroundColor="BLUE" waves="DEFAULT" ui:field="btnSendModal" />
-		</m:MaterialModalFooter>
+		</m:MaterialFooter>
 		<m:MaterialPanel ui:field="sendingLoader" visible="false"
 			addStyleNames="{style.alignCenter}">
 			<m:MaterialLabel text="Sending message ..."

src/main/java/org/gcube/portets/user/message_conversations/server/ConvServiceImpl.java

@@ -27,6 +27,7 @@ import org.gcube.portets.user.message_conversations.shared.ConvMessage;
 import org.gcube.portets.user.message_conversations.shared.CurrUserAndPortalUsersWrapper;
 import org.gcube.portets.user.message_conversations.shared.FileModel;
 import org.gcube.portets.user.message_conversations.shared.MessageUserModel;
+import org.gcube.portets.user.message_conversations.shared.MessagesWindow;
 import org.gcube.portets.user.message_conversations.shared.WSUser;
 import org.gcube.vomanagement.usermanagement.GroupManager;
 import org.gcube.vomanagement.usermanagement.UserManager;
@@ -54,10 +55,22 @@ public class ConvServiceImpl extends RemoteServiceServlet implements MessageServ
 	private PortalContext pContext;
 	private UserManager um;
 
+
 	public void init() {
 		um =  new LiferayUserManager();
 		pContext = PortalContext.getConfiguration();
+		
 	}
+	
+	
+	@Override
+	public MessagesWindow getMessagesWindows(boolean sent, int limit, int offset) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+
+
 	/**
 	 * 
 	 * @return true if you're running into the portal, false if in development
@@ -66,8 +79,7 @@ public class ConvServiceImpl extends RemoteServiceServlet implements MessageServ
 		try {
 			UserLocalServiceUtil.getService();
 			return true;
-		} 
+		}catch (com.liferay.portal.kernel.bean.BeanLocatorException ex) {			
-		catch (com.liferay.portal.kernel.bean.BeanLocatorException ex) {			
 			_log.trace("Development Mode ON");
 			return false;
 		}			

src/main/java/org/gcube/portets/user/message_conversations/server/FakeConvServiceImpl.java

@@ -0,0 +1,162 @@
+package org.gcube.portets.user.message_conversations.server;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.gcube.portets.user.message_conversations.client.MessageService;
+import org.gcube.portets.user.message_conversations.shared.ConvMessage;
+import org.gcube.portets.user.message_conversations.shared.CurrUserAndPortalUsersWrapper;
+import org.gcube.portets.user.message_conversations.shared.MessageUserModel;
+import org.gcube.portets.user.message_conversations.shared.MessagesWindow;
+import org.gcube.portets.user.message_conversations.shared.WSUser;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.google.gwt.user.server.rpc.RemoteServiceServlet;
+
+public class FakeConvServiceImpl extends RemoteServiceServlet implements MessageService{
+
+	/**
+	 * 
+	 */
+	private static final long serialVersionUID = 7437932085896191683L;
+	private static final Logger _log = LoggerFactory.getLogger(FakeConvServiceImpl.class);
+	
+	
+	ArrayList<ConvMessage> receivedMessages;
+	ArrayList<ConvMessage> sentMessages;
+	
+	Map<String,ConvMessage> receivedMessagesMap = new HashMap<>();
+	Map<String,ConvMessage> sentMessagesMap = new HashMap<>();
+	
+	
+	final int messageReceivedNumberToTest = 1000;
+	final int messageSentNumberToTest = 200;
+	
+	public void init() {
+		Calendar cal = Calendar.getInstance();
+		MessageUserModel mu = new MessageUserModel("andrea.rossi");
+		
+		List<MessageUserModel> recipients = Arrays.asList(new MessageUserModel("lucio.lelii"));
+		
+		String prefix ="received";
+		receivedMessages = new ArrayList<>();
+		for (int i =0; i<3000; i++) {
+			String id = "id-"+prefix+i;
+			ConvMessage msg= new ConvMessage(id, prefix+i, mu, recipients, new Date(cal.getTimeInMillis()), prefix+i, false, false);
+			receivedMessages.add(msg);
+			receivedMessagesMap.put(id, msg);
+		}
+		
+		prefix ="sent";
+		sentMessages = new ArrayList<>();
+		for (int i =0; i<3000; i++) {
+			String id = "id-"+prefix+i;
+			ConvMessage msg= new ConvMessage(id, prefix+i, mu, recipients,  new Date(cal.getTimeInMillis()), prefix+i, false, false);
+			sentMessages.add(msg);
+			sentMessagesMap.put(id, msg);
+		}
+		
+		
+		
+	}
+	
+	
+	@Override
+	public ArrayList<ConvMessage> getMessages(boolean sent) {
+		if (sent) {
+			_log.info("sent messages call with sent {}",sent);
+			return new ArrayList<>(sentMessages.subList(0, messageSentNumberToTest));
+		}
+		else {
+			_log.info("received messages call with sent {}",sent);
+			return new ArrayList<>(receivedMessages.subList(0, messageReceivedNumberToTest));
+		}
+	}
+
+	@Override
+	public ConvMessage getMessageById(String messageId, boolean sent) {
+		_log.info("get messageById called with id {} and sent {}", messageId,sent );
+		
+		ConvMessage msg;
+		if (sent)
+			msg = sentMessagesMap.get(messageId);
+		else msg = receivedMessagesMap.get(messageId);
+		msg.setRead(true);
+		return msg;
+	}
+
+	@Override
+	public CurrUserAndPortalUsersWrapper getWorkspaceUsers() {
+		_log.debug("trying to get WorkspaceUsers ..");
+		WSUser currUser = new WSUser("andrea.rossi", "andrea.rossi", "Andrea Rossi", "m.assante@gmail.com");
+		ArrayList<WSUser> portalUsers = new ArrayList<WSUser>();
+		
+		for (int i = 0; i < 10; i++) {
+			portalUsers.add(new WSUser(""+i, "username"+i, "userGetFullname()"+i, "user.getEmail()"+i));
+		}				
+	
+		CurrUserAndPortalUsersWrapper toReturn = new CurrUserAndPortalUsersWrapper(currUser, portalUsers);
+		return toReturn;
+	}
+
+	@Override
+	public ArrayList<WSUser> getUsersInfo(String[] usernames) {
+		return new ArrayList<>(Arrays.asList(new WSUser("andrea.rossi", "andrea.rossi", "Andrea Rossi", "m.assante@gmail.com")));
+	}
+
+	@Override
+	public ArrayList<WSUser> searchUsers(String keyword) {
+		return new ArrayList<>(Arrays.asList(new WSUser("andrea.rossi", "andrea.rossi", "Andrea Rossi", "m.assante@gmail.com"))); 
+	
+	}
+
+	@Override
+	public boolean sendToById(ArrayList<String> recipientIds, ArrayList<String> listAttachmentsId, String subject,
+			String body) {
+		_log.info("email sent");
+		return true;
+	}
+
+	@Override
+	public boolean deleteMessageById(String messageId, boolean sent) {
+		_log.info("message deleted");
+		return true;
+	}
+
+	@Override
+	public String getAttachmentDownloadURL(String itemId) {
+		return "www.google.it";
+	}
+
+	@Override
+	public boolean saveAttachmentToWorkspaceFolder(String itemId, String destinationFolderId) {
+		_log.info("attachment saved");
+		return true;
+	}
+
+	@Override
+	public boolean markMessageUnread(String messageId, boolean sent) {
+		_log.info("message marked");
+		return true;
+	}
+
+
+	@Override
+	public MessagesWindow getMessagesWindows(boolean sent, int limit, int offset) {
+		_log.info("get Message Window called limit {} offset {}", limit, offset);
+		if (sent) {
+			List<ConvMessage> messages = sentMessages.subList(0, messageSentNumberToTest);
+			return new MessagesWindow(messages.size(), new ArrayList<>(messages.subList(offset, offset+limit)));
+		} else {
+			List<ConvMessage> messages = receivedMessages.subList(0, messageReceivedNumberToTest);
+			return new MessagesWindow(messages.size(), new ArrayList<>(messages.subList(offset, offset+limit)));
+		}
+	}
+
+}

src/main/java/org/gcube/portets/user/message_conversations/shared/ConvMessage.java

@@ -5,6 +5,7 @@ import java.util.Date;
 import java.util.List;
 
 import com.google.gwt.user.client.rpc.IsSerializable;
+import com.google.gwt.view.client.ProvidesKey;
 
 
 public class ConvMessage implements IsSerializable{
@@ -18,6 +19,14 @@ public class ConvMessage implements IsSerializable{
 	private ArrayList<FileModel> attachments;
 	private boolean hasAttachments;
 
+
+	public static final ProvidesKey<ConvMessage> KEY_PROVIDER = new ProvidesKey<ConvMessage>() {
+		@Override
+		public Object getKey(ConvMessage item) {
+			return item == null ? null : item.getId();
+		}
+	};
+
 	public ConvMessage() {
 		super();
 	}
@@ -157,8 +166,30 @@ public class ConvMessage implements IsSerializable{
 	}
 
 
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((id == null) ? 0 : id.hashCode());
+		return result;
+	}
 
 
-	
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		ConvMessage other = (ConvMessage) obj;
+		if (id == null) {
+			if (other.id != null)
+				return false;
+		} else if (!id.equals(other.id))
+			return false;
+		return true;
+	}
 
 }

src/main/java/org/gcube/portets/user/message_conversations/shared/MessagesWindow.java

@@ -0,0 +1,28 @@
+package org.gcube.portets.user.message_conversations.shared;
+
+import java.util.ArrayList;
+
+import com.google.gwt.user.client.rpc.IsSerializable;
+
+public class MessagesWindow implements IsSerializable {
+
+	private int total;
+	private ArrayList<ConvMessage> messages;
+
+	public MessagesWindow() {
+		super();
+	}
+	
+	public MessagesWindow(int total, ArrayList<ConvMessage> messages) {
+		super();
+		this.total = total;
+		this.messages = messages;
+	}
+	public int getTotal() {
+		return total;
+	}
+	public ArrayList<ConvMessage> getMessages() {
+		return messages;
+	}
+	
+}

src/main/resources/clientlog4j.properties

@@ -18,4 +18,4 @@ log4j.logger.org.gcube.contentmanager=WARN
 log4j.logger.org.gcube.resources.discovery=WARN
 log4j.logger.com.liferay.portal.kernel.bean.PortalBeanLocatorUtil=OFF
 log4j.logger.com.liferay.portal.kernel.log.Jdk14LogImpl=OFF
-log4j.logger.org.eclipse.jetty=ERROR
+log4j.logger.org.eclipse.jetty=INFO

src/main/resources/org/gcube/portets/user/message_conversations/MessageConversations.gwt.xml

@@ -3,6 +3,7 @@
 	<!-- Inherit the core Web Toolkit stuff. -->
 	<inherits name='com.google.gwt.user.User' />
 
+	<inherits name="com.google.gwt.logging.Logging" />
 	<!-- Inherit the default GWT style sheet. You can change -->
 	<!-- the theme of your GWT application by uncommenting -->
 	<!-- any one of the following lines. -->

src/main/webapp/WEB-INF/web.xml

@@ -7,7 +7,8 @@
 	<!-- Servlets -->
 	<servlet>
 		<servlet-name>convServlet</servlet-name>
-		<servlet-class>org.gcube.portets.user.message_conversations.server.ConvServiceImpl</servlet-class>
+		<servlet-class>org.gcube.portets.user.message_conversations.server.FakeConvServiceImpl</servlet-class>
+		
 	</servlet>
 
 	<servlet-mapping>
@@ -20,7 +21,7 @@
 		<servlet-class>com.liferay.portal.kernel.servlet.PortalDelegateServlet</servlet-class>
 		<init-param>
 			<param-name>servlet-class</param-name>
-			<param-value>org.gcube.portets.user.message_conversations.server.ConvServiceImpl</param-value>
+			<param-value>org.gcube.portets.user.message_conversations.server.FakeConvServiceImpl</param-value>
 		</init-param>
 		<init-param>
 			<param-name>sub-context</param-name>