Alert in version informations when a new version is available

res/ui/about.ui

@@ -24,6 +24,9 @@
        <property name="alignment">
         <set>Qt::AlignCenter</set>
        </property>
+       <property name="openExternalLinks">
+        <bool>true</bool>
+       </property>
       </widget>
      </item>
      <item>

res/ui/homescreen.ui

@@ -7,7 +7,7 @@
     <x>0</x>
     <y>0</y>
     <width>400</width>
-    <height>301</height>
+    <height>325</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -20,7 +20,11 @@
    <string>Form</string>
   </property>
   <property name="styleSheet">
-   <string notr="true">QToolButton {
+   <string notr="true">QLabel {
+	qproperty-alignment: AlignCenter;
+}
+
+QToolButton {
     font-size: 14pt;
     font-weight: bold;
 }</string>
@@ -42,11 +46,14 @@
    <item>
     <widget class="QLabel" name="label_welcome">
      <property name="text">
-      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p align=&quot;center&quot;&gt;&lt;span style=&quot; font-size:xx-large; font-weight:600;&quot;&gt;Welcome to Cutecoin !&lt;/span&gt;&lt;/p&gt;&lt;p&gt;Would you like to...&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
+      <string>&lt;html&gt;&lt;head/&gt;&lt;body&gt;&lt;p&gt;TestText&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;</string>
      </property>
      <property name="textFormat">
       <enum>Qt::RichText</enum>
      </property>
+     <property name="openExternalLinks">
+      <bool>true</bool>
+     </property>
     </widget>
    </item>
    <item>

src/cutecoin/core/app.py

@@ -9,6 +9,8 @@ import logging
 import json
 import tarfile
 import shutil
+import requests
+import datetime
 
 from PyQt5.QtCore import QObject, pyqtSignal
 
@@ -319,3 +321,22 @@ class Application(QObject):
         data = {'default_account': self.default_account,
                 'local_accounts': self.jsonify_accounts()}
         return data
+
+    def latest_version(self):
+        version = (True, __version__)
+        releases = requests.get("https://api.github.com/repos/ucoin-io/cutecoin/releases")
+        latest = None
+        for r in releases.json():
+            if not latest:
+                latest = r
+            else:
+                latest_date = datetime.datetime.strptime(latest['published_at'], "%Y-%m-%dT%H:%M:%SZ")
+                date = datetime.datetime.strptime(r['published_at'], "%Y-%m-%dT%H:%M:%SZ")
+                if latest_date < date:
+                    latest = r
+        latest_version = tuple(latest["tag_name"].split("."))
+        version = (__version__ == latest_version,
+                   latest_version,
+                   latest["html_url"])
+        logging.debug("Found version : {0}".format(latest_version))
+        return version

src/cutecoin/gui/homescreen.py

@@ -6,6 +6,7 @@ Created on 31 janv. 2015
 
 from PyQt5.QtWidgets import QWidget
 from ..gen_resources.homescreen_uic import Ui_HomeScreenWidget
+from ..__init__ import __version__
 
 
 class HomeScreenWidget(QWidget, Ui_HomeScreenWidget):
@@ -13,9 +14,27 @@ class HomeScreenWidget(QWidget, Ui_HomeScreenWidget):
     classdocs
     """
 
-    def __init__(self):
+    def __init__(self, app):
         """
         Constructor
         """
         super().__init__()
         self.setupUi(self)
+
+        latest = app.latest_version()
+        version_info = ""
+        version_url = ""
+        if not latest[0]:
+            version_info = "Please get the latest release {version}" \
+                            .format(version='.'.join(latest[1]))
+            version_url = latest[2]
+
+        self.label_welcome.setText(
+            """
+            <h1>Welcome to Cutecoin {version}</h1>
+            <h2>{version_info}</h2>
+            <h3><a href={version_url}>Download link</a></h3>
+            <p>Would you like to...</p>
+            """.format(version=__version__,
+                       version_info=version_info,
+                       version_url=version_url))

src/cutecoin/gui/mainwindow.py

@@ -102,7 +102,7 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         self.loader.connection_error.connect(self.display_error)
         self.loader_thread.started.connect(self.loader.load)
 
-        self.homescreen = HomeScreenWidget()
+        self.homescreen = HomeScreenWidget(self.app)
         self.centralWidget().layout().addWidget(self.homescreen)
         self.homescreen.button_new.clicked.connect(self.open_add_account_dialog)
         self.homescreen.button_import.clicked.connect(self.import_account)
@@ -172,7 +172,8 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         self.status_label.setText("Loading account {0}".format(account_name))
         self.loader.set_account_name(account_name)
         self.loader_thread.start(QThread.LowPriority)
-        self.homescreen.setEnabled(False)
+        self.homescreen.button_new.setEnabled(False)
+        self.homescreen.button_import.setEnabled(False)
 
     def open_transfer_money_dialog(self):
         dialog = TransferMoneyDialog(self.app.current_account,
@@ -207,12 +208,27 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         aboutDialog = QDialog(self)
         aboutUi = Ui_AboutPopup()
         aboutUi.setupUi(aboutDialog)
+
+        latest = self.app.latest_version()
+        version_info = ""
+        version_url = ""
+        if not latest[0]:
+            version_info = "Latest release : {version}" \
+                            .format(version='.'.join(latest[1]))
+            version_url = latest[2]
+
+        new_version_text = """
+            <p><b>{version_info}</b></p>
+            <p><a href={version_url}>Download link</a></p>
+            """.format(version_info=version_info,
+                       version_url=version_url)
         text = """
         <h1>Cutecoin</h1>
 
         <p>Python/Qt uCoin client</p>
 
         <p>Version : {:}</p>
+        {new_version_text}
 
         <p>License : MIT</p>
 
@@ -221,7 +237,8 @@ class MainWindow(QMainWindow, Ui_MainWindow):
         <p>inso</p>
         <p>vit</p>
         <p>canercandan</p>
-        """.format(__version__)
+        """.format(__version__,
+                   new_version_text=new_version_text)
         aboutUi.label.setText(text)
         aboutDialog.show()