Can delete conversation messages

assets/css/components/conversations/windows.css

@@ -116,3 +116,7 @@
 #conversationsElem .direct-chat-msg.not-last-message-from-user .direct-chat-img {
 	margin-bottom: -5px;
 }
+
+#conversationsElem .direct-chat-msg.open .dropdown-menu {
+	margin-top: -20px;
+}

assets/js/components/conversations/chatWindows.js

@@ -910,6 +910,68 @@ ComunicWeb.components.conversations.chatWindows = {
 			element: textMessage,
 		});
 
+
+		//Add message dropdown menu
+		messageContainer.className += " dropdown";
+
+		var dropdownToggle = createElem2({
+			insertBefore: dateElem,
+			type: "i",
+			class: "hidden"
+		});
+		dropdownToggle.setAttribute("data-toggle", "dropdown");
+
+		var dropdownMenu = createElem2({
+			insertBefore: dateElem,
+			type: "ul",
+			class: "dropdown-menu"
+		});
+		dropdownMenu.setAttribute("role", "menu");
+		
+		messageTargetElem.addEventListener("dblclick", function(){
+			$(dropdownToggle).dropdown("toggle");
+		});
+
+		//Add message options
+		if(userIsPoster){
+
+			//Delete the message
+			var deleteLi = createElem2({
+				type: "li",
+				appendTo: dropdownMenu
+			});
+
+			var deleteLink = createElem2({
+				type: "a",
+				appendTo: deleteLi,
+				innerHTML: "Delete"
+			});
+
+			deleteLink.addEventListener("click", function(){
+				ComunicWeb.common.messages.confirm(
+					"Do you really want to delete this message? The operation can not be reverted!",
+					function(confirm){
+						if(!confirm) return;
+
+						//Hide the message
+						messageTargetElem.style.display = "none";
+
+						//Execute the request
+						ComunicWeb.components.conversations.interface.DeleteSingleMessage(
+							message.ID,
+							function(result){
+								if(!result){
+									messageTargetElem.style.display = "block";
+									notify("Could delete conversation message!", "danger");
+								}
+							}
+						);
+					}
+				)
+			});
+
+		}
+
 		//Return information about the message
 		return {
 			userID: message.ID_user,

assets/js/components/conversations/interface.js

@@ -363,6 +363,27 @@ ComunicWeb.components.conversations.interface = {
 
 	},
 
+	/**
+	 * Intend to delete a single conversation message
+	 * 
+	 * @param {Number} messageID The ID of the message to delete
+	 * @param {(success: Boolean) => any} callback Function to call once the
+	 * conversation message has been deleted
+	 */
+	DeleteSingleMessage: function(messageID, callback){
+		
+		ComunicWeb.common.api.makeAPIrequest(
+			"conversations/deleteMessage",
+			{"messageID": messageID},
+			true,
+			
+			function(result){
+				callback(result.error ? false : true);
+			}
+		);
+
+	},
+
 	/**
 	 * Empty conversations cache
 	 *