E5Gui/E5TextSpinBox.py

changeset 372
237c3fe739f5
child 791
9ec2ac20e54e
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/E5Gui/E5TextSpinBox.py	Mon Jun 28 20:00:21 2010 +0200
@@ -0,0 +1,78 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2010 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+from PyQt4.QtGui import QSpinBox
+
+class E5TextSpinBox(QSpinBox):
+    """
+    Class implementing a spinbox with textual entries.
+    """
+    def __init__(self, parent = None):
+        """
+        Constructor
+        
+        @param parent reference to the parent widget (QWidget)
+        """
+        QSpinBox.__init__(self, parent)
+        
+        self.__items = []
+        
+        self.setMinimum(0)
+        self.setMaximum(0)
+    
+    def addItem(self, txt, data = None):
+        """
+        Public method to add an item with item data.
+        
+        @param txt text to be shown (string)
+        @param data associated data
+        """
+        self.__items.append((txt, data))
+        self.setMaximum(len(self.__items) - 1)
+    
+    def itemData(self, index):
+        """
+        Public method to retrieve the data associated with an item.
+        
+        @param index index of the item (integer)
+        @return associated data
+        """
+        try:
+            return self.__items[index][1]
+        except IndexError:
+            return None
+    
+    def currentIndex(self):
+        """
+        Public method to retrieve the current index.
+        
+        @return current index (integer)
+        """
+        return self.value()
+    
+    def textFromValue(self, value):
+        """
+        Protected method to convert a value to text.
+        
+        @param value value to be converted (integer)
+        @return text for the given value (string)
+        """
+        try:
+            return self.__items[value][0]
+        except IndexError:
+            return ""
+    
+    def valueFromText(self, txt):
+        """
+        Protected method to convert a text to a value.
+        
+        @param txt text to be converted (string)
+        @return value for the given text (integer)
+        """
+        for index in range(len(self.__items)):
+            if self.__items[index][0] == txt:
+                return index
+        
+        return self.minimum()

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