Automatically fetch new messages.

ComunicMessages.pro

@@ -30,7 +30,8 @@ SOURCES += \
     data/newconversationmessage.cpp \
     helpers/conversationhelper.cpp \
     data/conversationmessage.cpp \
-    widgets/conversationmessagewidget.cpp
+    widgets/conversationmessagewidget.cpp \
+    data/conversationmessageslist.cpp
 
 HEADERS += \
     helpers/accounthelper.h \
@@ -62,7 +63,8 @@ HEADERS += \
     data/newconversationmessage.h \
     helpers/conversationhelper.h \
     data/conversationmessage.h \
-    widgets/conversationmessagewidget.h
+    widgets/conversationmessagewidget.h \
+    data/conversationmessageslist.h
 
 FORMS += \
     widgets/loginwidget.ui \

config.h

@@ -33,5 +33,6 @@
  * Conversations information
  */
 #define CONVERSATION_MESSAGE_MIN_LENGTH 3
+#define CONVERSATION_MESSAGES_REFRESH_INTERVAL 1000
 
 #endif // CONFIG_H

data/conversationmessageslist.cpp

@@ -0,0 +1,16 @@
+#include "conversationmessageslist.h"
+
+ConversationMessagesList::ConversationMessagesList()
+{
+
+}
+
+int ConversationMessagesList::getLastMessageID()
+{
+
+    //Return -1 by default if there is not any message in the conversation
+    if(count() == 0)
+        return -1;
+
+    return at(count() -1).iD();
+}

data/conversationmessageslist.h

@@ -0,0 +1,28 @@
+/**
+ * Conversations messages list container
+ *
+ * @author Pierre HUBERT
+ */
+
+#ifndef CONVERSATIONMESSAGESLIST_H
+#define CONVERSATIONMESSAGESLIST_H
+
+#include <QList>
+
+#include "conversationmessage.h"
+
+class ConversationMessagesList : public QList<ConversationMessage>
+{
+public:
+    ConversationMessagesList();
+
+    /**
+     * Get the ID of the oldest message of
+     * the conversation
+     *
+     * @return The ID of the message / -1 in case of failure
+     */
+    int getLastMessageID();
+};
+
+#endif // CONVERSATIONMESSAGESLIST_H

widgets/conversationwidget.cpp

@@ -1,5 +1,6 @@
 #include <QMessageBox>
 #include <algorithm>
+#include <QTimer>
 
 #include "conversationwidget.h"
 #include "ui_conversationwidget.h"
@@ -27,13 +28,16 @@ ConversationWidget::ConversationWidget(const Conversation &conversation, const U
     connect(mConversationHelper, &ConversationHelper::sendMessageCallback, this, &ConversationWidget::sendMessageCallback);
     connect(mConversationHelper, &ConversationHelper::getMessagesCallback, this, &ConversationWidget::getMessagesCallback);
 
-    //Get the latest message of the conversation
-    mConversationHelper->getMessages(conversation.iD());
+    //Initialize refresh timeout
+    mTimer = new QTimer(this);
+    connect(mTimer, &QTimer::timeout, this, &ConversationWidget::refreshTimeout);
+    emit refreshTimeout();
 }
 
 ConversationWidget::~ConversationWidget()
 {
     delete ui;
+    delete mTimer;
 }
 
 void ConversationWidget::sendMessage()
@@ -63,8 +67,19 @@ void ConversationWidget::sendMessage()
     mConversationHelper->sendMessage(newMessage);
 }
 
+void ConversationWidget::refreshTimeout()
+{
+    mTimer->stop();
+
+    //Get the latest message of the conversation
+    mConversationHelper->getMessages(mConversation.iD(), mMessages.getLastMessageID());
+}
+
 void ConversationWidget::getMessagesCallback(bool success, QList<ConversationMessage> list)
 {
+    //Restart counter
+    mTimer->start(CONVERSATION_MESSAGES_REFRESH_INTERVAL);
+
     if(!success){
         QMessageBox::warning(this, tr("Error while getting messages list"), tr("Could not refresh messages list!"));
         return;

widgets/conversationwidget.h

@@ -14,6 +14,7 @@
 #include "../data/conversation.h"
 #include "../data/userslist.h"
 #include "../data/conversationmessage.h"
+#include "../data/conversationmessageslist.h"
 
 namespace Ui {
 class ConversationWidget;
@@ -40,6 +41,12 @@ public slots:
 
 private slots:
 
+    /**
+     * This slot is called at regular interval in order to
+     * update regulary the list of messages
+     */
+    void refreshTimeout();
+
     /**
      * Method called once we have got the list of messages
      *
@@ -72,10 +79,11 @@ private:
 
     //Private fields
     Ui::ConversationWidget *ui;
+    QTimer *mTimer;
     ConversationHelper *mConversationHelper;
     Conversation mConversation;
     UsersList mUsersList;
-    QList<ConversationMessage> mMessages;
+    ConversationMessagesList mMessages;
 };
 
 #endif // CONVERSATIONWIDGET_H