Test validator stuff
This commit is contained in:
blitzmann
211
wxthing.py
211
wxthing.py
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# A very simple Drag and Drop Example
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# provided with no warranty whatsoever for any purpose, ever
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# A very simple Drag and Drop Example
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# provided with no warranty whatsoever for any purpose, ever
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# This code creates a Text Control from which Text can be dragged,
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# a Text Control to which Text can be dragged (from the first Text Control or from other applications),
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# and a Text Control to which Files can be dragged from outside this application.
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# While the later two windows can receive data from outside the application, the first window
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# does not appear to be able to provide text to other applications. Please feel free to fix
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# this if you know how, as I think that would be more useful as an example.
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# It is designed to demonstrate the fundamentals of very simple drag-and-drop operations.
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""" This mini-app is designed to demonstrate simple Drag and Drop functioning in wx.Python """
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__author__ = 'David Woods, Wisconsin Center for Education Research <dwoods@wcer.wisc.edu>'
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# Import wx.Python
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import wx
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# Declare GUI Constants
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MENU_FILE_EXIT = wx.NewId()
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DRAG_SOURCE = wx.NewId()
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# Define Text Drop Target class
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class TextDropTarget(wx.TextDropTarget):
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""" This object implements Drop Target functionality for Text """
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def __init__(self, obj):
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""" Initialize the Drop Target, passing in the Object Reference to
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indicate what should receive the dropped text """
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# Initialize the wx.TextDropTarget Object
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wx.TextDropTarget.__init__(self)
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# Store the Object Reference for dropped text
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self.obj = obj
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# Custom class that forces the TextEntryDialog to accept a Validator on the TextCtrl
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class TextEntryValidatedDialog(wx.TextEntryDialog):
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def __init__(self, parent, validator=None, *args, **kargs):
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wx.TextEntryDialog.__init__(self, parent, *args, **kargs)
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self.parent = parent
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def OnDropText(self, x, y, data):
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""" Implement Text Drop """
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# When text is dropped, write it into the object specified
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self.obj.WriteText(data + '\n\n')
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self.txtctrl = self.FindWindowById(3000)
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if validator:
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self.txtctrl.SetValidator(validator())
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# Define File Drop Target class
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class FileDropTarget(wx.FileDropTarget):
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""" This object implements Drop Target functionality for Files """
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def __init__(self, obj):
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""" Initialize the Drop Target, passing in the Object Reference to
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indicate what should receive the dropped files """
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# Initialize the wxFileDropTarget Object
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wx.FileDropTarget.__init__(self)
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# Store the Object Reference for dropped files
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self.obj = obj
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# Define a base Validator class that all other Validators will extend
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class BaseValidator(wx.Validator):
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def __init__(self):
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wx.Validator.__init__(self)
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def OnDropFiles(self, x, y, filenames):
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""" Implement File Drop """
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# For Demo purposes, this function appends a list of the files dropped at the end of the widget's text
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# Move Insertion Point to the end of the widget's text
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self.obj.SetInsertionPointEnd()
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# append a list of the file names dropped
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self.obj.WriteText("%d file(s) dropped at %d, %d:\n" % (len(filenames), x, y))
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for file in filenames:
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self.obj.WriteText(file + '\n')
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self.obj.WriteText('\n')
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def Validate(self, win):
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raise NotImplementedError()
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def TransferToWindow(self):
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return True
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def TransferFromWindow(self):
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return True
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# Define my Custom Validator
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class MyTextValidator(BaseValidator):
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def __init__(self):
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BaseValidator.__init__(self)
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def Clone(self):
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return MyTextValidator()
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def Validate(self, win):
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print("Validating!")
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textCtrl = self.GetWindow()
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text = textCtrl.GetValue().strip()
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try:
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if len(text) == 0:
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raise ValueError("You must supply a value!")
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elif text == "error":
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raise ValueError("Simulate another error!")
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return True
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except ValueError as e:
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wx.MessageBox("{}".format(e), "Error")
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textCtrl.SetFocus()
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return False
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class MyForm(wx.Frame):
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def __init__(self):
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wx.Frame.__init__(self, None, wx.ID_ANY, "List Control Tutorial")
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class MainWindow(wx.Frame):
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""" This window displays the GUI Widgets. """
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def __init__(self,parent,id,title):
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wx.Frame.__init__(self,parent, wx.ID_ANY, title, size = (800,600), style=wx.DEFAULT_FRAME_STYLE|wx.NO_FULL_REPAINT_ON_RESIZE)
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self.SetBackgroundColour(wx.WHITE)
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# Add a panel so it looks the correct on all platforms
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panel = wx.Panel(self, wx.ID_ANY)
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self.index = 0
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# Menu Bar
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# Create a MenuBar
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menuBar = wx.MenuBar()
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# Build a Menu Object to go into the Menu Bar
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menu1 = wx.Menu()
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menu1.Append(MENU_FILE_EXIT, "E&xit", "Quit Application")
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# Place the Menu Item in the Menu Bar
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menuBar.Append(menu1, "&File")
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# Place the Menu Bar on the ap
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self.SetMenuBar(menuBar)
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#Define Events for the Menu Items
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wx.EVT_MENU(self, MENU_FILE_EXIT, self.CloseWindow)
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btn = wx.Button(panel, label="Pop Dialog")
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btn.Bind(wx.EVT_BUTTON, self.pop_dialog)
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# GUI Widgets
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# Define a Text Control from which Text can be dragged for dropping
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# Label the control
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wx.StaticText(self, -1, "Text Drag Source (left-click to select, right-click to drag)", (10, 1))
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# Create a Text Control
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self.text = wx.TextCtrl(self, DRAG_SOURCE, "", pos=(10,15), size=(350,500), style = wx.TE_MULTILINE|wx.HSCROLL)
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# Make this control a Text Drop Target
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# Create a Text Drop Target object
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dt1 = TextDropTarget(self.text)
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# Link the Drop Target Object to the Text Control
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self.text.SetDropTarget(dt1)
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# Put some text in the control as a starting place to have something to copy
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for x in range(20):
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self.text.WriteText("This is line %d of some text to drag.\n" % x)
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# Define Right-Click as start of Drag
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wx.EVT_RIGHT_DOWN(self.text, self.OnDragInit)
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sizer = wx.BoxSizer(wx.VERTICAL)
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sizer.Add(btn, 0, wx.ALL | wx.CENTER, 5)
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panel.SetSizer(sizer)
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# Define a Text Control to recieve Dropped Text
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# Label the control
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wx.StaticText(self, -1, "Text Drop Target", (370, 1))
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# Create a read-only Text Control
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self.text2 = wx.TextCtrl(self, -1, "", pos=(370,15), size=(410,235), style = wx.TE_MULTILINE|wx.HSCROLL|wx.TE_READONLY)
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# Make this control a Text Drop Target
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# Create a Text Drop Target object
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dt2 = TextDropTarget(self.text2)
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# Link the Drop Target Object to the Text Control
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self.text2.SetDropTarget(dt2)
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def pop_dialog(self, event):
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dlg = TextEntryValidatedDialog(self, MyTextValidator,
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"Enter some text here (or \"error\" if you want to simulate a validation failure",
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"Thing")
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dlg.txtctrl.SetInsertionPointEnd()
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dlg.CenterOnParent()
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# Define a Text Control to receive Dropped Files
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# Label the control
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wx.StaticText(self, -1, "File Drop Target (from off application only)", (370, 261))
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# Create a read-only Text Control
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self.text3 = wx.TextCtrl(self, -1, "", pos=(370,275), size=(410,235), style = wx.TE_MULTILINE|wx.HSCROLL|wx.TE_READONLY)
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# Make this control a File Drop Target
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# Create a File Drop Target object
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dt3 = FileDropTarget(self.text3)
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# Link the Drop Target Object to the Text Control
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self.text3.SetDropTarget(dt3)
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# Display the Window
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self.Show(True)
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if dlg.ShowModal() == wx.ID_OK:
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print("Entered Value: "+dlg.txtctrl.GetValue().strip())
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def CloseWindow(self, event):
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""" Close the Window """
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self.Close()
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def OnDragInit(self, event):
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""" Begin a Drag Operation """
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# Create a Text Data Object, which holds the text that is to be dragged
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tdo = wx.TextDataObject(self.text.GetStringSelection())
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# Create a Drop Source Object, which enables the Drag operation
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tds = wx.DropSource(self.text)
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# Associate the Data to be dragged with the Drop Source Object
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tds.SetData(tdo)
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# Initiate the Drag Operation
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tds.DoDragDrop(True)
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class MyApp(wx.App):
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""" Define the Drag and Drop Example Application """
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def OnInit(self):
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""" Initialize the Application """
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# Declare the Main Application Window
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frame = MainWindow(None, -1, "Drag and Drop Example")
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# Show the Application as the top window
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self.SetTopWindow(frame)
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return True
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# Declare the Application and start the Main Loop
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app = MyApp(0)
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app.MainLoop()
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if __name__ == "__main__":
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app = wx.App(False)
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frame = MyForm()
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frame.Show()
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app.MainLoop()
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