Outline of an address book

Author: jeffsilverm

week-09/code/address_book/demo_addr_book.py

@@ -0,0 +1,178 @@
+#!/usr/bin/env python
+
+"""
+Example of the very basic, minimal framework for a wxPython application
+
+This adds a text box and reads the input from it.
+"""
+
+
+import wx
+from address_book_data import AddressBook
+
+class AppLogic(object):
+    """
+    A class to hold the application Application Logic.
+
+    You generally don't want the real logic of the app mixed
+    in with the GUI
+
+    In a real app, this would be a substantial collection of 
+    modules, classes, etc...
+    """
+    def file_open(self, filename):
+        """This method opens an address book file, reads the contents, and
+returns a list of addresses"""
+        global address_book
+        address_book = AddressBook()
+        print "Using file: %s now"%filename
+        address_book.load_from_file(filename)
+
+    def file_save(self):
+        address_book.save_to_file()
+
+class MainForm(wx.Panel):
+    def __init__(self, *args, **kwargs):
+        wx.Panel.__init__(self, *args, **kwargs)
+
+        ## add a button:
+        theButton1 = wx.Button(self, label="Push Me")
+        theButton1.Bind(wx.EVT_BUTTON, self.onButton)
+
+        ## add a static text lable:
+        label1 = wx.StaticText(self, label="Input Box:")
+
+        ## add a text control:
+        self.inTextControl = wx.TextCtrl(self)
+
+        ## add another button:
+        theButton2 = wx.Button(self, label="GetData")
+        theButton2.Bind(wx.EVT_BUTTON, self.onGetData)
+
+        ## add a static text lable:
+        label2 = wx.StaticText(self, label="Output Box:")
+        ## and another text control:
+        self.outTextControl = wx.TextCtrl(self, style=wx.TE_READONLY)
+
+
+        ## do the layout
+        buttonSizer = wx.BoxSizer(wx.VERTICAL)
+        
+        buttonSizer.Add(theButton1, 0, wx.GROW | wx.ALL, 4)
+        buttonSizer.Add(label1, 0, wx.ALIGN_LEFT | wx.TOP, 4)
+        buttonSizer.Add(self.inTextControl, 0, wx.GROW | wx.ALL, 4)
+        buttonSizer.Add((150, 10))
+        buttonSizer.Add(theButton2, 0, wx.GROW | wx.ALL, 4)
+        buttonSizer.Add(label2, 0, wx.ALIGN_LEFT | wx.TOP, 4)
+        buttonSizer.Add(self.outTextControl, 0, wx.GROW | wx.ALL, 4)
+
+        ## need another sizer to get the horizonal placement right:
+        mainSizer = wx.BoxSizer(wx.HORIZONTAL)
+        mainSizer.Add((1,1), 1)    # stretchable space
+        mainSizer.Add(buttonSizer, 0, wx.ALIGN_TOP) # the sizer with the buttons in it
+        mainSizer.Add((1,1), 1)    # stretchable space
+
+        self.SetSizer(mainSizer)
+        
+    def onButton(self, evt=None):
+        print "You pushed one of the buttons!"
+
+    def onGetData(self, evt=None):
+        print "get data button pressed"
+        contents = self.inTextControl.Value
+        print "the contents are:", contents
+
+        self.outTextControl.Value = self.inTextControl.Value
+
+
+class TestFrame(wx.Frame):
+    def __init__(self, app_logic, *args, **kwargs):
+        kwargs.setdefault('title', "Simple test App")
+        wx.Frame.__init__(self, *args, **kwargs)
+
+        self.app_logic = app_logic
+
+        # put the Panel on the frame
+        self.buttonPanel = MainForm(self)
+
+        # Build up the menu bar:
+        menuBar = wx.MenuBar()
+        
+        fileMenu = wx.Menu()
+        openMenuItem = fileMenu.Append(wx.ID_ANY, "&Open", "Open a file" )
+        self.Bind(wx.EVT_MENU, self.onOpen, openMenuItem)
+
+        closeMenuItem = fileMenu.Append(wx.ID_ANY, "&Close", "Close a file" )
+        self.Bind(wx.EVT_MENU, self.onClose, closeMenuItem)
+
+        exitMenuItem = fileMenu.Append(wx.ID_EXIT, "Exit", "Exit the application")
+        self.Bind(wx.EVT_MENU, self.onExit, exitMenuItem)
+        menuBar.Append(fileMenu, "&File")
+        
+        helpMenu = wx.Menu()
+        helpMenuItem = helpMenu.Append(wx.ID_HELP, "Help", "Get help")
+        menuBar.Append(helpMenu, "&Help")
+
+        self.SetMenuBar(menuBar)
+        
+    def onOpen(self, evt=None):
+        """This method opens an existing file"""
+        print "Open a file: "
+        # Create the dialog. In this case the current directory is forced as the starting
+        # directory for the dialog, and no default file name is forced. This can easily
+        # be changed in your program. This is an 'open' dialog, and allows multiple
+        # file selections as well.
+        #
+        # Finally, if the directory is changed in the process of getting files, this
+        # dialog is set up to change the current working directory to the path chosen.
+        dlg = wx.FileDialog(
+            self, message="Choose a file",
+            defaultDir=os.getcwd(), 
+            defaultFile="",
+            wildcard=wildcard,
+            style=wx.OPEN | wx.CHANGE_DIR
+            )
+
+        # Show the dialog and retrieve the user response. If it is the OK response, 
+        # process the data.
+        if dlg.ShowModal() == wx.ID_OK:
+            # This returns a Python list of files that were selected.
+            path = dlg.GetPath()
+            print "I'd be opening file in onOpen ", path
+            self.app_logic.file_open( path )
+        else :
+            print "The file dialog was canceled before anything was selected"
+
+        # Destroy the dialog. Don't do this until you are done with it!
+        # BAD things can happen otherwise!
+        dlg.Destroy()
+
+    def onClose(self, evt=None):
+        print "close menu selected"
+        self.app_logic.file_close()
+
+    def onExit(self, evt=None):
+        print "Exit the program here"
+        print "The event passed to onExit is type ", type(evt),
+        self.Close()
+
+
+class TestApp(wx.App):
+    def OnInit(self):
+        """
+        App initilization goes here -- not much to do, in this case
+        """
+        app_logic = AppLogic()
+        f = TestFrame(app_logic, parent=None)
+        f.Show()
+
+        return True
+
+if __name__ == "__main__":
+
+    app = TestApp(False)
+    ## set up the WIT -- to help debug sizers
+#    import wx.lib.inspection
+#    wx.lib.inspection.InspectionTool().Show()
+    app.MainLoop()
+