utils/wxPython/lib/filebrowsebutton.py

   1 from wxPython.wx import *
   2 import os
   3
   4 #----------------------------------------------------------------------
   5
   6 class FileBrowseButton(wxPanel):
   7     ''' A control to allow the user to type in a filename
   8     or browse with the standard file dialog to select file
   9
  10     __init__ (
  11         parent, id, pos, size -- passed directly to wxPanel initialisation
  12         style = wxTAB_TRAVERSAL -- passed directly to wxPanel initialisation
  13         labelText -- Text for label to left of text field
  14         buttonText -- Text for button which launches the file dialog
  15         toolTip -- Help text
  16         dialogTitle -- Title used in file dialog
  17         startDirectory -- Default directory for file dialog startup
  18         fileMask -- File mask (glob pattern, such as *.*) to use in file dialog
  19         fileMode -- wxOPEN or wxSAVE, indicates type of file dialog to use
  20         changeCallback -- callback receives all changes in value of control
  21     )
  22     GetValue() -- retrieve current value of text control
  23     SetValue(string) -- set current value of text control
  24     label -- pointer to internal label widget
  25     textControl -- pointer to internal text control
  26     browseButton -- pointer to button
  27     '''
  28     def __init__ (self, parent, id= -1,
  29                   pos = wxDefaultPosition, size = wxDefaultSize,
  30                   style = wxTAB_TRAVERSAL,
  31                   labelText= "File Entry:",
  32                   buttonText= "Browse",
  33                   toolTip= "Type filename or browse computer to choose file",
  34                   # following are the values for a file dialog box
  35                   dialogTitle = "Choose a file",
  36                   startDirectory = ".",
  37                   initialValue = "",
  38                   fileMask = "*.*",
  39                   fileMode = wxOPEN,
  40                   # callback for when value changes (optional)
  41                   changeCallback= None
  42         ):
  43         wxPanel.__init__ (self, parent, id, pos, size, style)
  44         # store variables
  45         self.dialogTitle = dialogTitle
  46         self.startDirectory = startDirectory
  47         self.fileMask = fileMask
  48         self.fileMode = fileMode
  49         self.changeCallback = changeCallback
  50
  51         box = wxBoxSizer(wxHORIZONTAL)
  52         self.label = wxStaticText(self, -1, labelText, style =wxALIGN_RIGHT )
  53         font = self.label.GetFont()
  54         w, h, d, e = self.GetFullTextExtent(labelText, font)
  55         self.label.SetSize(wxSize(w+5, h))
  56         box.Add( self.label, 0, wxCENTER )
  57
  58         ID = wxNewId()
  59         self.textControl = wxTextCtrl(self, ID)
  60         self.textControl.SetToolTipString( toolTip )
  61         box.Add( self.textControl, 1, wxLEFT|wxCENTER, 5)
  62         if changeCallback:
  63             EVT_TEXT(self.textControl, ID, changeCallback)
  64
  65         ID = wxNewId()
  66         self.browseButton = button =wxButton(self, ID, buttonText)
  67         box.Add( button, 0, wxCENTER)
  68         button.SetToolTipString( toolTip )
  69         EVT_BUTTON(button, ID, self.OnBrowse)
  70
  71         # add a border around the whole thing and resize the panel to fit
  72         outsidebox = wxBoxSizer(wxVERTICAL)
  73         outsidebox.Add(box, 1, wxEXPAND|wxALL, 3)
  74         outsidebox.Fit(self)
  75
  76         self.SetAutoLayout(true)
  77         self.SetSizer( outsidebox )
  78         self.Layout()
  79         if size.width != -1 or size.height != -1:
  80             self.SetSize(size)
  81
  82
  83
  84     def OnBrowse (self, event = None):
  85         ''' Going to browse for file... '''
  86         current = self.GetValue ()
  87         directory = os.path.split(current)
  88         if os.path.isdir( current):
  89             directory =current
  90         elif directory and os.path.isdir( directory[0] ):
  91             directory = directory [0]
  92         else:
  93             directory = self.startDirectory
  94         dlg = wxFileDialog(self, self.dialogTitle, directory, current, self.fileMask, self.fileMode)
  95         if dlg.ShowModal() == wxID_OK:
  96             self.SetValue (dlg.GetPath())
  97         dlg.Destroy()
  98         self.textControl.SetFocus()
  99
 100
 101     def GetValue (self):
 102         ''' Convenient access to text control value '''
 103         return self.textControl.GetValue ()
 104
 105
 106     def SetValue (self, value):
 107         ''' Convenient setting of text control value '''
 108         return self.textControl.SetValue (value)
 109
 110     def Enable (self, value):
 111         ''' Convenient enabling/disabling of entire control '''
 112         self.label.Enable (value)
 113         self.textControl.Enable (value)
 114         return self.browseButton.Enable (value)
 115
 116     def GetLabel( self ):
 117         ''' Retrieve the label's current text '''
 118         return self.label.GetLabel()
 119
 120     def SetLabel( self, value ):
 121         ''' Set the label's current text '''
 122         return self.label.SetLabel( value )
 123
 124
 125
 126 #----------------------------------------------------------------------
 127
 128
 129 if __name__ == "__main__":
 130     #from skeletonbuilder import rulesfile
 131     class DemoFrame( wxFrame ):
 132         def __init__(self, parent):
 133             wxFrame.__init__(self, parent, 2400, "File entry with browse", size=(500,100) )
 134             panel = wxPanel (self,-1)
 135             innerbox = wxBoxSizer(wxVERTICAL)
 136             control = FileBrowseButton(panel)
 137             innerbox.Add(  control, 0, wxEXPAND )
 138             control = FileBrowseButton(panel, labelText = "With Callback", style = wxSUNKEN_BORDER  ,changeCallback= self.OnFileNameChanged)
 139             innerbox.Add(  control, 0, wxEXPAND|wxALIGN_BOTTOM )
 140             panel.SetAutoLayout(true)
 141             panel.SetSizer( innerbox )
 142
 143         def OnFileNameChanged (self, event):
 144             print "Filename changed", event.GetString ()
 145
 146         def OnCloseMe(self, event):
 147             self.Close(true)
 148
 149         def OnCloseWindow(self, event):
 150             self.Destroy()
 151
 152     class DemoApp(wxApp):
 153         def OnInit(self):
 154             wxImage_AddHandler(wxJPEGHandler())
 155             wxImage_AddHandler(wxPNGHandler())
 156             wxImage_AddHandler(wxGIFHandler())
 157             frame = DemoFrame(NULL)
 158             #frame = RulesPanel(NULL )
 159             frame.Show(true)
 160             self.SetTopWindow(frame)
 161             return true
 162
 163     def test( ):
 164         app = DemoApp(0)
 165         app.MainLoop()
 166     print 'Creating dialogue'
 167     test( )
 168
 169
 170