* missing installation stuff for undo/redo

*  create a first undo gtk entry field: family name in person editor


svn: r15837

po/POTFILES.in

@@ -326,6 +326,9 @@ src/gui/widgets/labels.py
 src/gui/widgets/menutoolbuttonaction.py
 src/gui/widgets/progressdialog.py
 src/gui/widgets/styledtexteditor.py
+src/gui/widgets/undoablebuffer.py
+src/gui/widgets/undoableentry.py
+src/gui/widgets/undoablestyledbuffer.py
 src/gui/widgets/validatedmaskedentry.py
 
 # Simple API

src/glade/catalog/grampswidgets.py

@@ -3,6 +3,9 @@ import gtk
 class ValidatableMaskedEntry(gtk.Entry):
     __gtype_name__ = 'ValidatableMaskedEntry'
 
+class UndoableEntry(gtk.Entry):
+    __gtype_name__ = 'UndoableEntry'
+    
 class StyledTextEditor(gtk.TextView):
     __gtype_name__ = 'StyledTextEditor'
 

src/glade/catalog/grampswidgets.xml

@@ -6,6 +6,10 @@
         name="ValidatableMaskedEntry" 
         title="Validatable Masked Entry"
         generic-name="valid_mask"/>
+    <glade-widget-class 
+        name="UndoableEntry" 
+        title="Undoable Entry"
+        generic-name="undo_entry"/>
     <glade-widget-class 
         name="StyledTextEditor" 
         title="Styled Text Editor"
@@ -13,6 +17,7 @@
   </glade-widget-classes>
   <glade-widget-group name="GrampsWidgets" title="Gramps Widgets">
     <glade-widget-class-ref name="ValidatableMaskedEntry"/>
+    <glade-widget-class-ref name="UndoableEntry"/>
     <glade-widget-class-ref name="StyledTextEditor"/>
   </glade-widget-group>
 </glade-catalog>

src/glade/editperson.glade

@@ -1,6 +1,7 @@
 <?xml version="1.0"?>
 <interface>
   <!-- interface-requires gtk+ 2.12 -->
+  <!-- interface-requires grampswidgets 0.0 -->
   <!-- interface-naming-policy toplevel-contextual -->
   <object class="GtkDialog" id="editperson">
     <property name="has_focus">True</property>
@@ -149,7 +150,7 @@
                   </packing>
                 </child>
                 <child>
-                  <object class="GtkEntry" id="surname">
+                  <object class="UndoableEntry" id="surname">
                     <property name="visible">True</property>
                     <property name="can_focus">True</property>
                     <property name="tooltip_text" translatable="yes">part of a person's name indicating the family to which the person belongs</property>

src/gui/widgets/Makefile.am

@@ -24,6 +24,8 @@ pkgdata_PYTHON = \
 	tageditor.py \
 	toolcomboentry.py \
 	undoablebuffer.py \
+	undoableentry.py \
+	undoablestyledbuffer.py \
 	validatedcomboentry.py \
 	validatedmaskedentry.py \
 	valueaction.py \

src/gui/widgets/__init__.py

@@ -34,6 +34,9 @@ from statusbar import Statusbar
 from styledtextbuffer import *
 from styledtexteditor import *
 from toolcomboentry import *
+from undoablebuffer import *
+from undoableentry import *
+from undoablestyledbuffer import *
 from validatedcomboentry import *
 from validatedmaskedentry import *
 from valueaction import *

src/gui/widgets/styledtextbuffer.py

@@ -20,7 +20,7 @@
 
 # $Id$
 
-"Text buffer subclassed from gtk.TextBuffer handling L{StyledText}."
+"""Text buffer subclassed from gtk.TextBuffer handling L{StyledText}."""
 
 __all__ = ["ALLOWED_STYLES", "MATCH_START", "MATCH_END", "MATCH_FLAVOR",
            "MATCH_STRING", "StyledTextBuffer"]

src/gui/widgets/undoablebuffer.py

@@ -26,6 +26,8 @@
 gtk textbuffer with undo functionality 
 """
 
+__all__ = ["UndoableBuffer"]
+
 # Originally LGLP from:
 # http://bitbucket.org/tiax/gtk-textbuffer-with-undo/
 # Please send bugfixes and comments upstream to Florian

src/gui/widgets/undoableentry.py

@@ -0,0 +1,311 @@
+#
+# Gramps - a GTK+/GNOME based genealogy program
+#
+# Copyright (C) 2010  Benny Malengier
+#
+# based on undoablebuffer Copyright (C) 2009  Florian Heinle
+#
+# This program 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 of the License, or
+# (at your option) any later version.
+#
+# This program 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 this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+# $Id: validatedmaskedentry.py 14091 2010-01-18 04:42:17Z pez4brian $
+
+__all__ = ["UndoableEntry"]
+
+#-------------------------------------------------------------------------
+#
+# Standard python modules
+#
+#-------------------------------------------------------------------------
+from gen.ggettext import gettext as _
+
+import logging
+_LOG = logging.getLogger(".widgets.undoableentry")
+
+#-------------------------------------------------------------------------
+#
+# GTK/Gnome modules
+#
+#-------------------------------------------------------------------------
+import gobject
+import gtk
+
+#-------------------------------------------------------------------------
+#
+# Gramps modules
+#
+#-------------------------------------------------------------------------
+from undoablebuffer import Stack
+
+class UndoableInsertEntry(object):
+    """something that has been inserted into our gtk.editable"""
+    def __init__(self, text, length, position, editable):
+        self.offset = position
+        self.text = str(text)
+        self.length = length
+        if self.length > 1 or self.text in ("\r", "\n", " "):
+            self.mergeable = False
+        else:
+            self.mergeable = True
+
+class UndoableDeleteEntry(object):
+    """something that has been deleted from our textbuffer"""
+    def __init__(self, editable, start, end):
+        self.text = str(editable.get_chars(start, end))
+        self.start = start
+        self.end = end
+        # need to find out if backspace or delete key has been used
+        # so we don't mess up during redo
+        insert = editable.get_position()
+        if insert <= start:
+            self.delete_key_used = True
+        else:
+            self.delete_key_used = False
+        if self.end - self.start > 1 or self.text in ("\r", "\n", " "):
+            self.mergeable = False
+        else:
+            self.mergeable = True
+
+class UndoableEntry(gtk.Entry):
+    """
+    The UndoableEntry is an Entry subclass with additional features.
+
+    Additional features:
+      - Undo and Redo on CTRL-Z/CTRL-SHIFT-Z
+    """
+    __gtype_name__ = 'UndoableEntry'
+    
+    insertclass = UndoableInsertEntry
+    deleteclass = UndoableDeleteEntry
+
+    #how many undo's are remembered
+    undo_stack_size = 50
+
+    def __init__(self):
+        gtk.Entry.__init__(self)
+        self.undo_stack = Stack(self.undo_stack_size)
+        self.redo_stack = []
+        self.not_undoable_action = False
+        self.undo_in_progress = False
+
+        self.connect('insert-text', self._on_insert_text)
+        self.connect('delete-text', self._on_delete_text)
+        self.connect('key-press-event', self._on_key_press_event)
+
+    def set_text(self, text):
+        gtk.Entry.set_text(self, text)
+        self.reset()
+
+    def _on_key_press_event(self, widget, event):
+        """Signal handler.
+        Handle formatting undo/redo key press.
+        
+        """
+        if ((gtk.gdk.keyval_name(event.keyval) == 'Z') and
+            (event.state & gtk.gdk.CONTROL_MASK) and 
+            (event.state & gtk.gdk.SHIFT_MASK)):
+            self.redo()
+            return True
+        elif ((gtk.gdk.keyval_name(event.keyval) == 'z') and
+              (event.state & gtk.gdk.CONTROL_MASK)):
+            self.undo()
+            return True
+
+        return False
+
+    def __empty_redo_stack(self):
+        self.redo_stack = []
+
+    def _on_insert_text(self, editable, text, length, positionptr):
+        def can_be_merged(prev, cur):
+            """see if we can merge multiple inserts here
+
+            will try to merge words or whitespace
+            can't merge if prev and cur are not mergeable in the first place
+            can't merge when user set the input bar somewhere else
+            can't merge across word boundaries"""
+            WHITESPACE = (' ', '\t')
+            if not cur.mergeable or not prev.mergeable:
+                return False
+            elif cur.offset != (prev.offset + prev.length):
+                return False
+            elif cur.text in WHITESPACE and not prev.text in WHITESPACE:
+                return False
+            elif prev.text in WHITESPACE and not cur.text in WHITESPACE:
+                return False
+            return True
+
+        if not self.undo_in_progress:
+            self.__empty_redo_stack()
+        if self.not_undoable_action:
+            return
+        undo_action = self.insertclass(text, length, editable.get_position(), 
+                                       editable)
+        try:
+            prev_insert = self.undo_stack.pop()
+        except IndexError:
+            self.undo_stack.append(undo_action)
+            return
+        if not isinstance(prev_insert, self.insertclass):
+            self.undo_stack.append(prev_insert)
+            self.undo_stack.append(undo_action)
+            return
+        if can_be_merged(prev_insert, undo_action):
+            prev_insert.length += undo_action.length
+            prev_insert.text += undo_action.text
+            self.undo_stack.append(prev_insert)
+        else:
+            self.undo_stack.append(prev_insert)
+            self.undo_stack.append(undo_action)
+
+    def _on_delete_text(self, editable, start, end):
+        def can_be_merged(prev, cur):
+            """see if we can merge multiple deletions here
+
+            will try to merge words or whitespace
+            can't merge if prev and cur are not mergeable in the first place
+            can't merge if delete and backspace key were both used
+            can't merge across word boundaries"""
+
+            WHITESPACE = (' ', '\t')
+            if not cur.mergeable or not prev.mergeable:
+                return False
+            elif prev.delete_key_used != cur.delete_key_used:
+                return False
+            elif prev.start != cur.start and prev.start != cur.end:
+                return False
+            elif cur.text not in WHITESPACE and \
+               prev.text in WHITESPACE:
+                return False
+            elif cur.text in WHITESPACE and \
+               prev.text not in WHITESPACE:
+                return False
+            return True
+
+        if not self.undo_in_progress:
+            self.__empty_redo_stack()
+        if self.not_undoable_action:
+            return
+        undo_action = self.deleteclass(editable, start, end)
+        try:
+            prev_delete = self.undo_stack.pop()
+        except IndexError:
+            self.undo_stack.append(undo_action)
+            return
+        if not isinstance(prev_delete, self.deleteclass):
+            self.undo_stack.append(prev_delete)
+            self.undo_stack.append(undo_action)
+            return
+        if can_be_merged(prev_delete, undo_action):
+            if prev_delete.start == undo_action.start: # delete key used
+                prev_delete.text += undo_action.text
+                prev_delete.end += (undo_action.end - undo_action.start)
+            else: # Backspace used
+                prev_delete.text = "%s%s" % (undo_action.text,
+                                                     prev_delete.text)
+                prev_delete.start = undo_action.start
+            self.undo_stack.append(prev_delete)
+        else:
+            self.undo_stack.append(prev_delete)
+            self.undo_stack.append(undo_action)
+
+    def begin_not_undoable_action(self):
+        """don't record the next actions
+        
+        toggles self.not_undoable_action"""
+        self.not_undoable_action = True        
+
+    def end_not_undoable_action(self):
+        """record next actions
+        
+        toggles self.not_undoable_action"""
+        self.not_undoable_action = False
+    
+    def reset(self):
+        """
+        Resets buffer to initial state.
+        """
+        self.undo_stack = Stack(self.undo_stack_size)
+        self.redo_stack[:] = []
+        self.not_undoable_action = False
+        self.undo_in_progress = False
+
+    def undo(self):
+        """undo inserts or deletions
+
+        undone actions are being moved to redo stack"""
+        if not self.undo_stack:
+            return
+        self.begin_not_undoable_action()
+        self.undo_in_progress = True
+        undo_action = self.undo_stack.pop()
+        self.redo_stack.append(undo_action)
+        if isinstance(undo_action, self.insertclass):
+            self._undo_insert(undo_action)
+        elif isinstance(undo_action, self.deleteclass):
+            self._undo_delete(undo_action)
+        else:
+            self._handle_undo(undo_action)
+        self.end_not_undoable_action()
+        self.undo_in_progress = False
+
+    def _undo_insert(self, undo_action):
+        start = undo_action.offset
+        stop = undo_action.offset + undo_action.length
+        self.delete_text(start, stop)
+        self.set_position(undo_action.offset)
+
+    def _undo_delete(self, undo_action):
+        self.insert_text(undo_action.text, undo_action.start)
+        if undo_action.delete_key_used:
+            self.set_position(undo_action.start)
+        else:
+            self.set_position(undo_action.end)
+
+    def _handle_undo(self, undo_action):
+        raise NotImplementedError
+
+    def redo(self):
+        """redo inserts or deletions
+
+        redone actions are moved to undo stack"""
+        if not self.redo_stack:
+            return
+        self.begin_not_undoable_action()
+        self.undo_in_progress = True
+        redo_action = self.redo_stack.pop()
+        self.undo_stack.append(redo_action)
+        if isinstance(redo_action, self.insertclass):
+            self._redo_insert(redo_action)
+        elif isinstance(redo_action, self.deleteclass):
+            self._redo_delete(redo_action)
+        else:
+            self._handle_redo(redo_action)
+        self.end_not_undoable_action()
+        self.undo_in_progress = False
+
+    def _redo_insert(self, redo_action):
+        self.insert_text(redo_action.text, redo_action.offset)
+        new_cursor_pos = redo_action.offset + redo_action.length
+        self.set_position(new_cursor_pos)
+
+    def _redo_delete(self, redo_action):
+        start = redo_action.start
+        stop = redo_action.end
+        self.delete_text(start, stop)
+        self.set_position(redo_action.start)
+
+    def _handle_redo(self, redo_action):
+        raise NotImplementedError

src/gui/widgets/undoablestyledbuffer.py

@@ -26,9 +26,7 @@
 gtk textbuffer with undo functionality 
 """
 
-# Originally LGLP from:
+__all__ = ["UndoableStyledBuffer"]
-# http://bitbucket.org/tiax/gtk-textbuffer-with-undo/
-# Please send bugfixes and comments upstream to Florian
 
 import gtk