Added update check to GUI.

doc/changelog.txt

@@ -4,6 +4,9 @@ Changes:
 - checking: Parse PHP files recursively.
 - gui: Remove reset button from option dialog.
 
+Features:
+- gui: Add update check for newer versions of LinkChecker.
+
 
 6.1 "Christmas Vacation" (released 23.12.2010)
 

linkcheck/gui/__init__.py

@@ -34,7 +34,7 @@ from .urlmodel import UrlItemModel
 from .urlsave import urlsave
 from .settings import Settings
 from .. import configuration, checker, director, add_intern_pattern, \
-    strformat, fileutil
+    strformat, fileutil, updater
 from ..containers import enum
 from .. import url as urlutil
 from ..checker import httpheaders
@@ -233,6 +233,34 @@ to improve %(appname)s even more!
         """Quit application."""
         urlsave(self, self.config, self.model.urls)
 
+    @QtCore.pyqtSlot()
+    def on_actionCheckUpdates_triggered (self):
+        """Display update check result."""
+        title = _('%(app)s update information') % dict(app=configuration.App)
+        # XXX check for update in background thread
+        result, value = updater.check_update()
+        if result:
+            dialog = QtGui.QMessageBox.information
+            if value is None:
+                # no update available: display info
+                text = _('Congratulations: you have the latest version '
+                         '%(app)s installed.')
+                attrs = dict(app=configuration.App)
+            else:
+                # display update link
+                version, url = 'hulla', 'bulla'
+                text = _('A new version %(version)s of %(app)s is '
+                         'available for <a href="%(url)s">download</a>.')
+                attrs = dict(version=version, app=configuration.AppName,
+                             url=url)
+        else:
+            # value is an error message
+            dialog = QtGui.QMessageBox.warning
+            text = _('An error occured while checking for an '
+                     'update of %(app)s: %(error)s.')
+            attrs = dict(error=value, app=configuration.AppName)
+        dialog(self, title, text % attrs)
+
     def start (self):
         """Start a new check."""
         if self.status == Status.idle:

linkcheck/gui/linkchecker_ui_main.py

@@ -2,7 +2,7 @@
 
 # Form implementation generated from reading ui file 'ui/main.ui'
 #
-# Created: Sat Dec 18 08:03:50 2010
+# Created: Tue Jan  4 19:19:45 2011
 #      by: PyQt4 UI code generator 4.7.3
 #
 # WARNING! All changes made in this file will be lost!
@@ -677,12 +677,15 @@ class Ui_MainWindow(object):
         icon8.addPixmap(QtGui.QPixmap(":/icons/exit.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
         self.actionQuit.setIcon(icon8)
         self.actionQuit.setObjectName("actionQuit")
+        self.actionCheckUpdates = QtGui.QAction(MainWindow)
+        self.actionCheckUpdates.setObjectName("actionCheckUpdates")
         self.menuEdit.addAction(self.actionOptions)
         self.menuLinkChecka.addAction(self.actionSave)
         self.menuLinkChecka.addAction(self.actionQuit)
         self.menuHelp.addAction(self.actionAbout)
         self.menuHelp.addAction(self.actionHelp)
         self.menuHelp.addAction(self.actionDebug)
+        self.menuHelp.addAction(self.actionCheckUpdates)
         self.menubar.addAction(self.menuLinkChecka.menuAction())
         self.menubar.addAction(self.menuEdit.menuAction())
         self.menubar.addAction(self.menuHelp.menuAction())
@@ -746,6 +749,7 @@ class Ui_MainWindow(object):
         self.actionSave.setShortcut(_("Ctrl+S"))
         self.actionQuit.setText(_("Quit"))
         self.actionQuit.setShortcut(_("Ctrl+Q"))
+        self.actionCheckUpdates.setText(_("Check for updates"))
 
 from lineedit import LineEdit
 import linkchecker_rc

linkcheck/gui/ui/main.ui

@@ -1292,6 +1292,7 @@
     <addaction name="actionAbout"/>
     <addaction name="actionHelp"/>
     <addaction name="actionDebug"/>
+    <addaction name="actionCheckUpdates"/>
    </widget>
    <addaction name="menuLinkChecka"/>
    <addaction name="menuEdit"/>
@@ -1413,6 +1414,11 @@
     <string>Ctrl+Q</string>
    </property>
   </action>
+  <action name="actionCheckUpdates">
+   <property name="text">
+    <string>Check for updates</string>
+   </property>
+  </action>
  </widget>
  <customwidgets>
   <customwidget>

linkcheck/updater.py

@@ -34,14 +34,15 @@ else:
 
 
 def check_update ():
-    """Return URL of new version, None if there is no update, or
+    """Return new version and URL, None if there is no update, or
     an error message if there was an error."""
-    version, url = get_current_version()
-    print "XXX", version, url
+    version, value = get_current_version()
     if version is None:
-        return False, url
+        # value is an error message
+        return False, value
     if is_newer_version(version):
-        return True, url
+        # value is an URL linking to the update package
+        return True, (version, value)
     return True, None
 
 
@@ -49,7 +50,7 @@ def get_current_version ():
     """Download update info and parse it."""
     info, content = get_content(UPDATE_URL)
     if info is None:
-        None, _('Could not check for updates.')
+        None, _('could not download update information')
     version, url = None, None
     for line in content.splitlines():
         if line.startswith(VERSION_TAG):