improve nickname dialog (add text, placeholder), fix > 3 letters check, close dialog with window properly

client/Nickname.ui

@@ -7,33 +7,14 @@
     <x>0</x>
     <y>0</y>
     <width>449</width>
-    <height>85</height>
+    <height>98</height>
    </rect>
   </property>
   <property name="windowTitle">
    <string>Dialog</string>
   </property>
   <layout class="QGridLayout" name="gridLayout">
-   <item row="1" column="0">
-    <widget class="QLineEdit" name="lineEdit"/>
-   </item>
-   <item row="2" column="0">
-    <spacer name="verticalSpacer">
-     <property name="orientation">
-      <enum>Qt::Vertical</enum>
-     </property>
-     <property name="sizeType">
-      <enum>QSizePolicy::Maximum</enum>
-     </property>
-     <property name="sizeHint" stdset="0">
-      <size>
-       <width>20</width>
-       <height>10</height>
-      </size>
-     </property>
-    </spacer>
-   </item>
-   <item row="4" column="0">
+   <item row="6" column="0">
     <widget class="QDialogButtonBox" name="buttonBox">
      <property name="orientation">
       <enum>Qt::Horizontal</enum>
@@ -56,6 +37,36 @@
      </property>
     </spacer>
    </item>
+   <item row="2" column="0">
+    <widget class="QLineEdit" name="lineEdit">
+     <property name="placeholderText">
+      <string>Type your nickname...</string>
+     </property>
+    </widget>
+   </item>
+   <item row="4" column="0">
+    <spacer name="verticalSpacer">
+     <property name="orientation">
+      <enum>Qt::Vertical</enum>
+     </property>
+     <property name="sizeType">
+      <enum>QSizePolicy::Maximum</enum>
+     </property>
+     <property name="sizeHint" stdset="0">
+      <size>
+       <width>20</width>
+       <height>10</height>
+      </size>
+     </property>
+    </spacer>
+   </item>
+   <item row="1" column="0">
+    <widget class="QLabel" name="label">
+     <property name="text">
+      <string>Please choose a nickname with 3 or more characters</string>
+     </property>
+    </widget>
+   </item>
   </layout>
  </widget>
  <resources/>

client/gui.py

@@ -63,13 +63,14 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         super(MainWindow, self).__init__(*args, **kwargs)
         self.setupUi(self)
         self.show()
+        self.closed = False
 
         # Get Nickname
         while True:
-            nicknameDialog = NicknameDialog(self)
-            nicknameDialog.exec_()
-            self.nickname = nicknameDialog.lineEdit.text().strip()
-            if len(self.nickname) > 3:
+            self.nicknameDialog = NicknameDialog(self)
+            self.nicknameDialog.exec_()
+            self.nickname = self.nicknameDialog.lineEdit.text().strip()
+            if len(self.nickname) >= 3 or self.closed:
                 break
 
         # Connect to server
@@ -92,6 +93,12 @@ class MainWindow(QMainWindow, Ui_MainWindow):
 
         self.messages = []
 
+    def closeEvent(self, event):
+        if self.nicknameDialog:
+            self.closed = True
+            self.nicknameDialog.close()
+        event.accept()  # let the window close
+
     def eventFilter(self, obj, event):
         if event.type() == QEvent.KeyPress and obj is self.messageBox:
             if event.key() == Qt.Key_Return and self.messageBox.hasFocus():

client/nickname.py

@@ -1,6 +1,6 @@
 # -*- coding: utf-8 -*-
 
-# Form implementation generated from reading ui file '.\Nickname.ui'
+# Form implementation generated from reading ui file 'Nickname.ui'
 #
 # Created by: PyQt5 UI code generator 5.15.2
 #
@@ -14,21 +14,24 @@ from PyQt5 import QtCore, QtGui, QtWidgets
 class Ui_NicknameDialog(object):
     def setupUi(self, NicknameDialog):
         NicknameDialog.setObjectName("NicknameDialog")
-        NicknameDialog.resize(449, 85)
+        NicknameDialog.resize(449, 98)
         self.gridLayout = QtWidgets.QGridLayout(NicknameDialog)
         self.gridLayout.setObjectName("gridLayout")
-        self.lineEdit = QtWidgets.QLineEdit(NicknameDialog)
-        self.lineEdit.setObjectName("lineEdit")
-        self.gridLayout.addWidget(self.lineEdit, 1, 0, 1, 1)
-        spacerItem = QtWidgets.QSpacerItem(20, 10, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Maximum)
-        self.gridLayout.addItem(spacerItem, 2, 0, 1, 1)
         self.buttonBox = QtWidgets.QDialogButtonBox(NicknameDialog)
         self.buttonBox.setOrientation(QtCore.Qt.Horizontal)
         self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Ok)
         self.buttonBox.setObjectName("buttonBox")
-        self.gridLayout.addWidget(self.buttonBox, 4, 0, 1, 1)
-        spacerItem1 = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
-        self.gridLayout.addItem(spacerItem1, 0, 0, 1, 1)
+        self.gridLayout.addWidget(self.buttonBox, 6, 0, 1, 1)
+        spacerItem = QtWidgets.QSpacerItem(20, 40, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
+        self.gridLayout.addItem(spacerItem, 0, 0, 1, 1)
+        self.lineEdit = QtWidgets.QLineEdit(NicknameDialog)
+        self.lineEdit.setObjectName("lineEdit")
+        self.gridLayout.addWidget(self.lineEdit, 2, 0, 1, 1)
+        spacerItem1 = QtWidgets.QSpacerItem(20, 10, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Maximum)
+        self.gridLayout.addItem(spacerItem1, 4, 0, 1, 1)
+        self.label = QtWidgets.QLabel(NicknameDialog)
+        self.label.setObjectName("label")
+        self.gridLayout.addWidget(self.label, 1, 0, 1, 1)
 
         self.retranslateUi(NicknameDialog)
         self.buttonBox.accepted.connect(NicknameDialog.accept)
@@ -38,3 +41,5 @@ class Ui_NicknameDialog(object):
     def retranslateUi(self, NicknameDialog):
         _translate = QtCore.QCoreApplication.translate
         NicknameDialog.setWindowTitle(_translate("NicknameDialog", "Dialog"))
+        self.lineEdit.setPlaceholderText(_translate("NicknameDialog", "Type your nickname..."))
+        self.label.setText(_translate("NicknameDialog", "Please choose a nickname with 3 or more characters"))