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undo and redo with correct style in noteeditor

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svn: r15777
This commit is contained in:
Benny Malengier 2010-08-19 16:10:53 +00:00
parent 5ad5cb17ae
commit 63d5ea6cb6
3 changed files with 123 additions and 18 deletions
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4
src/gui/widgets/styledtextbuffer.py
View File

@ -43,7 +43,7 @@ _LOG = logging.getLogger(".widgets.styledtextbuffer")
#-------------------------------------------------------------------------
import gobject
import gtk
from gui.widgets.undoablebuffer import UndoableBuffer
from gui.widgets.undoablebuffer import UndoableBufferStyled
from pango import WEIGHT_BOLD, STYLE_ITALIC, UNDERLINE_SINGLE
#-------------------------------------------------------------------------
@ -226,7 +226,7 @@ class GtkSpellState(object):
# StyledTextBuffer class
#
#-------------------------------------------------------------------------
class StyledTextBuffer(UndoableBuffer):
class StyledTextBuffer(UndoableBufferStyled):
"""An extended TextBuffer for handling StyledText strings.
StyledTextBuffer is an interface between GRAMPS' L{StyledText} format

22
src/gui/widgets/styledtexteditor.py
View File

@ -73,6 +73,8 @@ FORMAT_TOOLBAR = '''
<toolitem action="%d"/>
<toolitem action="%d"/>
<toolitem action="%d"/>
<toolitem action="Undo"/>
<toolitem action="Redo"/>
<toolitem action="%d"/>
<toolitem action="%d"/>
<toolitem action="%d"/>
@ -171,6 +173,7 @@ class StyledTextEditor(gtk.TextView):
"""Setup initial instance variable values."""
self.textbuffer = StyledTextBuffer()
self.textbuffer.connect('style-changed', self._on_buffer_style_changed)
self.textbuffer.connect('changed', self._on_buffer_changed)
gtk.TextView.__init__(self, self.textbuffer)
self.match = None
@ -480,6 +483,14 @@ class StyledTextEditor(gtk.TextView):
# create the action group and insert all the actions
self.action_group = gtk.ActionGroup('Format')
self.action_group.add_toggle_actions(format_toggle_actions)
self.undo_action = gtk.Action("Undo", _('Undo'), _('Undo'),
gtk.STOCK_UNDO)
self.undo_action.connect('activate', self.undo)
self.redo_action = gtk.Action("Redo", _('Redo'), _('Redo'),
gtk.STOCK_REDO)
self.redo_action.connect('activate', self.redo)
self.action_group.add_action(self.undo_action)
self.action_group.add_action(self.redo_action)
self.action_group.add_actions(format_actions)
self.action_group.add_action(fontface_action)
self.action_group.add_action(fontsize_action)
@ -494,6 +505,8 @@ class StyledTextEditor(gtk.TextView):
# get the toolbar and set it's style
toolbar = uimanager.get_widget('/ToolBar')
toolbar.set_style(gtk.TOOLBAR_ICONS)
self.undo_action.set_sensitive(False)
self.redo_action.set_sensitive(False)
return toolbar
@ -648,6 +661,11 @@ class StyledTextEditor(gtk.TextView):
self.textbuffer.get_iter_at_offset(start),
self.textbuffer.get_iter_at_offset(end+1))
def _on_buffer_changed(self, buffer):
"""synchronize the undo/redo buttons with what is possible"""
self.undo_action.set_sensitive(self.textbuffer.can_undo)
self.redo_action.set_sensitive(self.textbuffer.can_redo)
def _on_buffer_style_changed(self, buffer, changed_styles):
"""Synchronize actions as the format changes at the buffer's cursor."""
for style, style_value in changed_styles.iteritems():
@ -745,10 +763,10 @@ class StyledTextEditor(gtk.TextView):
"""
return self.toolbar
def undo(self):
def undo(self, obj=None):
self.textbuffer.undo()
def redo(self):
def redo(self, obj=None):
self.textbuffer.redo()
def uri_dialog(self, uri, callback):

113
src/gui/widgets/undoablebuffer.py
View File

@ -3,6 +3,7 @@
#
# Copyright (C) 2009 Florian Heinle
# Copyright (C) 2010 Doug Blank <doug.blank@gmail.com>
# Copyright (C) 2010 Benny Malengier
#
# 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
@ -31,12 +32,12 @@ gtk textbuffer with undo functionality
import gtk
from gen.lib.styledtext import StyledText
class UndoableInsert(object):
"""something that has been inserted into our textbuffer"""
def __init__(self, text_iter, text, length):
def __init__(self, text_iter, text, length, text_buffer):
self.offset = text_iter.get_offset()
# FIXME: GRAMPS change: force to use string rather than
# StyledText
self.text = str(text)
self.length = length
if self.length > 1 or self.text in ("\r", "\n", " "):
@ -44,11 +45,15 @@ class UndoableInsert(object):
else:
self.mergeable = True
class UndoableInsertStyled(UndoableInsert):
"""something that has been inserted into our styledtextbuffer"""
def __init__(self, text_iter, text, length, text_buffer):
UndoableInsert.__init__(self, text_iter, text, length, text_buffer)
self.tags = text_buffer.get_text().get_tags()
class UndoableDelete(object):
"""something that has ben deleted from our textbuffer"""
"""something that has been deleted from our textbuffer"""
def __init__(self, text_buffer, start_iter, end_iter):
# FIXME: GRAMPS change: force to use string rather than
# StyledText
self.text = str(text_buffer.get_text(start_iter, end_iter))
self.start = start_iter.get_offset()
self.end = end_iter.get_offset()
@ -64,11 +69,18 @@ class UndoableDelete(object):
else:
self.mergeable = True
class UndoableDeleteStyled(UndoableDelete):
def __init__(self, text_buffer, start_iter, end_iter):
UndoableDelete.__init__(self, text_buffer, start_iter, end_iter)
self.tags = text_buffer.get_text().get_tags()
class UndoableBuffer(gtk.TextBuffer):
"""text buffer with added undo capabilities
designed as a drop-in replacement for gtksourceview,
at least as far as undo is concerned"""
insertclass = UndoableInsert
deleteclass = UndoableDelete
def __init__(self):
"""
@ -113,7 +125,7 @@ class UndoableBuffer(gtk.TextBuffer):
self.redo_stack = []
if self.not_undoable_action:
return
undo_action = UndoableInsert(text_iter, text, length)
undo_action = self.insertclass(text_iter, text, length, textbuffer)
try:
prev_insert = self.undo_stack.pop()
except IndexError:
@ -159,7 +171,7 @@ class UndoableBuffer(gtk.TextBuffer):
self.redo_stack = []
if self.not_undoable_action:
return
undo_action = UndoableDelete(text_buffer, start_iter, end_iter)
undo_action = self.deleteclass(text_buffer, start_iter, end_iter)
try:
prev_delete = self.undo_stack.pop()
except IndexError:
@ -219,15 +231,14 @@ class UndoableBuffer(gtk.TextBuffer):
undo_action.offset + undo_action.length
)
self.delete(start, stop)
self.place_cursor(start)
self.place_cursor(self.get_iter_at_offset(undo_action.offset))
else:
start = self.get_iter_at_offset(undo_action.start)
self.insert(start, undo_action.text)
stop = self.get_iter_at_offset(undo_action.end)
if undo_action.delete_key_used:
self.place_cursor(start)
self.place_cursor(self.get_iter_at_offset(undo_action.start))
else:
self.place_cursor(stop)
self.place_cursor(self.get_iter_at_offset(undo_action.end))
self.end_not_undoable_action()
self.undo_in_progress = False
@ -252,6 +263,82 @@ class UndoableBuffer(gtk.TextBuffer):
start = self.get_iter_at_offset(redo_action.start)
stop = self.get_iter_at_offset(redo_action.end)
self.delete(start, stop)
self.place_cursor(start)
self.place_cursor(self.get_iter_at_offset(redo_action.start))
self.end_not_undoable_action()
self.undo_in_progress = False
class UndoableBufferStyled(UndoableBuffer):
"""text buffer with added undo capabilities for styledtextbuffer
designed as a drop-in replacement for gtksourceview,
at least as far as undo is concerned"""
insertclass = UndoableInsertStyled
deleteclass = UndoableDeleteStyled
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, UndoableInsert):
start = self.get_iter_at_offset(undo_action.offset)
stop = self.get_iter_at_offset(
undo_action.offset + undo_action.length
)
self.delete(start, stop)
#the text is correct again, now we create correct styled text
s_text = StyledText(gtk.TextBuffer.get_text(self,
self.get_start_iter(), self.get_end_iter()), undo_action.tags)
self.set_text(s_text)
self.place_cursor(self.get_iter_at_offset(undo_action.offset))
else:
start = self.get_iter_at_offset(undo_action.start)
self.insert(start, undo_action.text)
#the text is correct again, now we create correct styled text
s_text = StyledText(gtk.TextBuffer.get_text(self,
self.get_start_iter(), self.get_end_iter()), undo_action.tags)
self.set_text(s_text)
if undo_action.delete_key_used:
self.place_cursor(self.get_iter_at_offset(undo_action.start))
else:
self.place_cursor(self.get_iter_at_offset(undo_action.end))
self.end_not_undoable_action()
self.undo_in_progress = False
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, UndoableInsert):
start = self.get_iter_at_offset(redo_action.offset)
self.insert(start, redo_action.text)
#the text is correct again, now we create correct styled text
s_text = StyledText(gtk.TextBuffer.get_text(self,
self.get_start_iter(), self.get_end_iter()), redo_action.tags)
self.set_text(s_text)
new_cursor_pos = self.get_iter_at_offset(
redo_action.offset + redo_action.length
)
self.place_cursor(new_cursor_pos)
else:
start = self.get_iter_at_offset(redo_action.start)
stop = self.get_iter_at_offset(redo_action.end)
self.delete(start, stop)
#the text is correct again, now we create correct styled text
s_text = StyledText(gtk.TextBuffer.get_text(self,
self.get_start_iter(), self.get_end_iter()), redo_action.tags)
self.set_text(s_text)
self.place_cursor(self.get_iter_at_offset(redo_action.start))
self.end_not_undoable_action()
self.undo_in_progress = False