[gnue] r7500 - in trunk/gnue-forms/src/uidrivers/curses: . widgets

[johannes]

Author: johannes
Date: 2005-04-28 10:14:58 -0500 (Thu, 28 Apr 2005)
New Revision: 7500

Added:
   trunk/gnue-forms/src/uidrivers/curses/dialogs.py
Modified:
   trunk/gnue-forms/src/uidrivers/curses/UIdriver.py
   trunk/gnue-forms/src/uidrivers/curses/widgets/entry.py
Log:
Added lookup dialog to dropdowns (currently using Ctrl-W)


Modified: trunk/gnue-forms/src/uidrivers/curses/UIdriver.py
===================================================================
--- trunk/gnue-forms/src/uidrivers/curses/UIdriver.py   2005-04-28 11:17:58 UTC 
(rev 7499)
+++ trunk/gnue-forms/src/uidrivers/curses/UIdriver.py   2005-04-28 15:14:58 UTC 
(rev 7500)
@@ -29,6 +29,7 @@
 from gnue.common.datasources import GLoginHandler
 from gnue.forms.GFKeyMapper import vk, KeyMapper
 from gnue.forms.uidrivers._base.UIdriver import GFUserInterfaceBase
+from gnue.forms.uidrivers.curses import dialogs
 
 # =============================================================================
 # User interface object
@@ -76,9 +77,15 @@
     self.attr ['warnmsg']     = curses.color_pair (9) + curses.A_BOLD
     self.attr ['errormsg']    = curses.color_pair (9) + curses.A_BOLD \
                                                         + curses.A_BLINK
+    self.attr ['window 1']    = curses.color_pair (5)
 
     self.__currentForm = None
 
+    # TODO: Add a concept of 'lookups' to the GF* layer (like canCOMMIT, ...)
+    #       Meanwhile we're using Ctrl-W (hardcoded)
+    self.lookupKey = 23
+
+
   # ---------------------------------------------------------------------------
   # Initialize user interface
   # ---------------------------------------------------------------------------
@@ -301,7 +308,36 @@
     gDebug (2, "Detail : %s" % detail)
     self.showMessage (message, kind = 'Error')
 
+
   # ---------------------------------------------------------------------------
+  # Select one of the given options
+  # ---------------------------------------------------------------------------
+
+  def getOption (self, title, options):
+    """
+    Create a dialog box for selecting one of the given options
+    @param title: title for the dialog box
+    @param options: dictionary to select a value from
+
+    @return: the selected option (dict-value) or None if cancelled
+    """
+
+    if self.__currentForm:
+      (left, top, right, bottom) = self.__currentForm.getCanvas ()
+    else:
+      (right, bottom) = self.__screen.getmaxyx ()
+      left = top = 0
+
+    dialog = dialogs.OptionsDialog (title, options, self.attr, self.lookupKey,
+                                    left, top, right, bottom)
+    try:
+      return dialog.run ()
+
+    finally:
+      self.__screen.refresh ()
+
+
+  # ---------------------------------------------------------------------------
   # Ask for login info
   # ---------------------------------------------------------------------------
 

Added: trunk/gnue-forms/src/uidrivers/curses/dialogs.py
===================================================================
--- trunk/gnue-forms/src/uidrivers/curses/dialogs.py    2005-04-28 11:17:58 UTC 
(rev 7499)
+++ trunk/gnue-forms/src/uidrivers/curses/dialogs.py    2005-04-28 15:14:58 UTC 
(rev 7500)
@@ -0,0 +1,192 @@
+# Short line describing the purpose of this file
+#
+# Copyright 2001-2005 Free Software Foundation
+#
+# This file is part of GNU Enterprise
+#
+# GNU Enterprise is free software; you can redistribute it
+# and/or modify it under the terms of the GNU General Public
+# License as published by the Free Software Foundation; either
+# version 2, or (at your option) any later version.
+#
+# GNU Enterprise is distributed in the hope that it will be
+# useful, but WITHOUT ANY WARRANTY; without even the implied
+# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+# PURPOSE. See the GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public
+# License along with program; see the file COPYING. If not,
+# write to the Free Software Foundation, Inc., 59 Temple Place
+# - Suite 330, Boston, MA 02111-1307, USA.
+#
+# $Id$
+
+import curses
+
+# =============================================================================
+# Dialog box for selection an option from a given options dictionary
+# =============================================================================
+
+class OptionsDialog:
+
+  # ---------------------------------------------------------------------------
+  # Constructor
+  # ---------------------------------------------------------------------------
+
+  def __init__ (self, title, options, attrs, quit = None, left = 0, top = 0,
+      right = 80, bottom = 24):
+    
+    curses.noecho ()
+    curses.cbreak ()
+
+    try:
+      self.__oldcursor = curses.curs_set (0)
+    except:
+      self.__oldcursor = 1
+
+    self.__data = ["%s" % item for item in options.values ()]
+    self.__data.sort ()
+
+    maxString = max ([len (item) for item in self.__data])
+
+    width  = min (right - left, max ((maxString + 4), len (title) + 4))
+    height = min (bottom - top, len (options) + 4)
+    left   = max (left, (right - left - width) / 2)
+    top    = max (top, (bottom - top - height) / 2)
+
+    width  = min (left + width, right) - left
+    height = min (top + height, bottom) - top
+
+    self.__window = curses.newwin (height, width, top, left)
+    self.__window.keypad (1)
+    self.__window.box ()
+
+    self.__normal  = attrs.get ('window 1', attrs ['background'])
+    self.__reverse = attrs ['focusentry']
+    self.__quit    = quit
+
+
+    self.__dwidth = width - 4
+    self.__window.bkgd (' ', self.__normal)
+    self.__window.addstr (1, 2, title.center (self.__dwidth))
+    self.__window.hline (2, 1, curses.ACS_HLINE, width - 2)
+
+    self.__offset = 0
+    self.__index  = 0
+    self.__pIndex = 1
+    self.__page   = height - 4
+
+    self.__refresh ()
+
+
+  # ---------------------------------------------------------------------------
+  # Start the selection
+  # ---------------------------------------------------------------------------
+
+  def run (self):
+    """
+    Start the selection dialog.
+
+    @return: selected item or None if canceled
+    """
+
+    self.__window.refresh ()
+
+    try:
+      while 1:
+        key = self.__window.getch ()
+
+        if key == 27 or key == self.__quit:
+          return None
+
+        elif key == curses.KEY_UP:
+          self.__move (-1)
+
+        elif key == curses.KEY_DOWN:
+          self.__move (+1)
+
+        elif key == 10:
+          return self.__data [self.__index]
+
+    finally:
+      try:
+        curses.curs_set (self.__oldcursor)
+      except:
+        pass
+
+
+  # ---------------------------------------------------------------------------
+  # Move the selection in a given direction
+  # ---------------------------------------------------------------------------
+
+  def __move (self, direction):
+
+    self.__pIndex += direction
+    self.__index  += direction
+
+    if self.__pIndex > self.__page:
+      if self.__index < len (self.__data):
+        self.__offset += direction
+
+    elif self.__pIndex < 1:
+      self.__offset = max (0, self.__offset - 1)
+
+    # Make sure to stay in bounds
+    self.__index = max (0, self.__index)
+    self.__index = min (len (self.__data) - 1, self.__index)
+
+    self.__pIndex = max (1, self.__pIndex)
+    self.__pIndex = min (self.__page, self.__pIndex)
+
+    self.__refresh ()
+
+
+  # ---------------------------------------------------------------------------
+  # Refresh the dialog's window
+  # ---------------------------------------------------------------------------
+
+  def __refresh (self):
+
+    lines = self.__data [self.__offset:self.__offset + self.__page]
+    for (line, value) in enumerate (lines):
+      text = " %s " % value.ljust (self.__dwidth) [:self.__dwidth]
+      if line == self.__pIndex - 1:
+        attr = self.__reverse
+      else:
+        attr = self.__normal
+
+      self.__window.addnstr (3 + line, 1, text, self.__dwidth + 2, attr)
+
+    self.__window.move (3 + self.__pIndex - 1, 1)
+
+
+# =============================================================================
+# Module self test
+# =============================================================================
+
+if __name__ == '__main__':
+  curses.initscr ()
+  curses.raw ()
+  curses.start_color ()
+
+  curses.init_pair (3, curses.COLOR_BLACK, curses.COLOR_CYAN)
+  curses.init_pair (4, curses.COLOR_BLUE, curses.COLOR_WHITE)
+  curses.init_pair (5, curses.COLOR_WHITE, curses.COLOR_RED)
+
+  attrs = {'background': curses.color_pair (4),
+           'focusentry': curses.color_pair (5),
+           'window 1': curses.color_pair (3)}
+
+  opts = {'foo': 'Foobar', 'baz': 'Barbaz and the Gang!',
+          2: 'something', 3: 'quite', 4: 'interesting stuff', 5: 'hey ho',
+          7: 'number 7'}
+
+  opts = {1:1, 2:2, 3:3, 4:4, 5:5, 6:6, 7:7, 8:8, 9:9, 10:10, 11:11, 12:12,
+  13:13, 14:14, 15:15, 16:16, 17:17, 18:18, 19:19, 20:20}
+  d = OptionsDialog ('Foos', opts, attrs, quit = 23, top = 2, bottom = 22)
+  r = d.run ()
+
+
+  curses.endwin ()
+
+  print "RESULT:", r


Property changes on: trunk/gnue-forms/src/uidrivers/curses/dialogs.py
___________________________________________________________________
Name: svn:keywords
   + Id

Modified: trunk/gnue-forms/src/uidrivers/curses/widgets/entry.py
===================================================================
--- trunk/gnue-forms/src/uidrivers/curses/widgets/entry.py      2005-04-28 
11:17:58 UTC (rev 7499)
+++ trunk/gnue-forms/src/uidrivers/curses/widgets/entry.py      2005-04-28 
15:14:58 UTC (rev 7500)
@@ -50,6 +50,9 @@
     self.__selection = {}
     self.__enabled   = {}
 
+    if self.__style in ['dropdown', 'listbox']:
+      self.__allowedValues = event.object._field._allowedValues
+
     if self.__style == 'checkbox':
       self._setCursor (1, 0)
 
@@ -164,6 +167,21 @@
 
     self._setText (index, text, attr, self.__selection [index])
 
+
+  # ---------------------------------------------------------------------------
+  # handle keypress
+  # ---------------------------------------------------------------------------
+
+  def _keypress (self, key):
+
+    if self.__style == 'dropdown' and key == chr (self._uiDriver.lookupKey):
+      res = self._uiDriver.getOption (u_("Select option"), 
self.__allowedValues)
+      if res is not None:
+        self._request ('REPLACEVALUE', text = res)
+    else:
+      UIHelper._keypress (self, key)
+
+
 # =============================================================================
 # Configuration data
 # =============================================================================