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#!/usr/bin/env python
# This is a sample implementation of an editor.
import os
import pygtk
pygtk.require('2.0')
import gtk
import dialogs
BLOCK_SIZE = 2048
RESPONSE_FORWARD = 1
class EditWindow(gtk.Window):
def __init__(self, quit_cb=None):
gtk.Window.__init__(self, gtk.WINDOW_TOPLEVEL)
self.set_size_request(470, 300)
self.connect("delete_event", self.file_exit)
self.quit_cb = quit_cb
self.vbox = gtk.VBox()
self.add(self.vbox)
self.vbox.show()
hdlbox = gtk.HandleBox()
self.vbox.pack_start(hdlbox, expand=False)
hdlbox.show()
self.menubar, self.toolbar = self.create_menu()
hdlbox.add(self.menubar)
self.menubar.show()
self.vbox.pack_start(self.toolbar, expand=False)
self.scrolledwin = gtk.ScrolledWindow()
self.scrolledwin.show()
self.vbox.pack_start(self.scrolledwin)
self.text = gtk.TextView()
self.text.set_editable(True)
self.scrolledwin.add(self.text)
self.text.show()
self.buffer = self.text.get_buffer()
self.dirty = 0
self.file_new()
self.text.grab_focus()
self.clipboard = gtk.Clipboard(selection='CLIPBOARD')
self.dirname = None
self.search_string = None
self.last_search_iter = None
return
def load_file(self, fname):
try:
fd = open(fname)
self.buffer.set_text('')
buf = fd.read(BLOCK_SIZE)
while buf != '':
self.buffer.insert_at_cursor(buf)
buf = fd.read(BLOCK_SIZE)
self.text.queue_draw()
self.set_title(os.path.basename(fname))
self.fname = fname
self.dirname = os.path.dirname(self.fname)
self.buffer.set_modified(False)
self.new = 0
except:
dlg = gtk.MessageDialog(self, gtk.DIALOG_DESTROY_WITH_PARENT,
gtk.MESSAGE_ERROR, gtk.BUTTONS_OK,
"Can't open " + fname)
resp = dlg.run()
dlg.hide()
return
def create_menu(self):
ui_string = """<ui>
<menubar>
<menu name='FileMenu' action='FileMenu'>
<menuitem action='FileNew'/>
<menuitem action='FileOpen'/>
<menuitem action='FileSave'/>
<menuitem action='FileSaveAs'/>
<separator/>
<menuitem action='FileExit'/>
</menu>
<menu name='EditMenu' action='EditMenu'>
<menuitem action='EditCut'/>
<menuitem action='EditCopy'/>
<menuitem action='EditPaste'/>
<menuitem action='EditClear'/>
<separator/>
<menuitem action='EditFind'/>
<menuitem action='EditFindNext'/>
</menu>
<placeholder name='OtherMenus'/>
<menu name='HelpMenu' action='HelpMenu'>
<menuitem action='HelpAbout'/>
</menu>
</menubar>
<toolbar>
<toolitem action='FileNew'/>
<toolitem action='FileOpen'/>
<toolitem action='FileSave'/>
<toolitem action='FileSaveAs'/>
<separator/>
<toolitem action='EditCut'/>
<toolitem action='EditCopy'/>
<toolitem action='EditPaste'/>
<toolitem action='EditClear'/>
</toolbar>
</ui>
"""
actions = [
('FileMenu', None, '_File'),
('FileNew', gtk.STOCK_NEW, None, None, None, self.file_new),
('FileOpen', gtk.STOCK_OPEN, None, None, None, self.file_open),
('FileSave', gtk.STOCK_SAVE, None, None, None, self.file_save),
('FileSaveAs', gtk.STOCK_SAVE_AS, None, None, None,
self.file_saveas),
('FileExit', gtk.STOCK_QUIT, None, None, None, self.file_exit),
('EditMenu', None, '_Edit'),
('EditCut', gtk.STOCK_CUT, None, None, None, self.edit_cut),
('EditCopy', gtk.STOCK_COPY, None, None, None, self.edit_copy),
('EditPaste', gtk.STOCK_PASTE, None, None, None, self.edit_paste),
('EditClear', gtk.STOCK_REMOVE, 'C_lear', None, None,
self.edit_clear),
('EditFind', gtk.STOCK_FIND, None, None, None, self.edit_find),
('EditFindNext', None, 'Find _Next', "F3", None,
self.edit_find_next),
('HelpMenu', gtk.STOCK_HELP),
('HelpAbout', None, 'A_bout', None, None, self.help_about),
]
self.ag = gtk.ActionGroup('edit')
self.ag.add_actions(actions)
self.ui = gtk.UIManager()
self.ui.insert_action_group(self.ag, 0)
self.ui.add_ui_from_string(ui_string)
self.add_accel_group(self.ui.get_accel_group())
return (self.ui.get_widget('/menubar'), self.ui.get_widget('/toolbar'))
def chk_save(self):
if self.buffer.get_modified():
dlg = gtk.Dialog('Unsaved File', self,
gtk.DIALOG_DESTROY_WITH_PARENT,
(gtk.STOCK_YES, gtk.RESPONSE_YES,
gtk.STOCK_NO, gtk.RESPONSE_NO,
gtk.STOCK_CANCEL, gtk.RESPONSE_CANCEL))
lbl = gtk.Label((self.fname or "Untitled")+
" has not been saved\n" +
"Do you want to save it?")
lbl.show()
dlg.vbox.pack_start(lbl)
ret = dlg.run()
dlg.hide()
if ret == gtk.RESPONSE_NO:
return 0
if ret == gtk.RESPONSE_YES:
if self.file_save():
return 0
return 1
return 0
def file_new(self, mi=None):
if self.chk_save(): return
self.buffer.set_text('')
self.buffer.set_modified(False)
self.fname = None
self.set_title("Untitled")
self.new = 1
return
def file_open(self, mi=None):
if self.chk_save(): return
fname = dialogs.OpenFile('Open File', self, self.dirname, self.fname)
if not fname: return
self.load_file(fname)
return
def file_save(self, mi=None):
if self.new:
return self.file_saveas()
ret = False
try:
start, end = self.buffer.get_bounds()
blockend = start.copy()
fd = open(self.fname, "w")
while blockend.forward_chars(BLOCK_SIZE):
buf = self.buffer.get_text(start, blockend)
fd.write(buf)
start = blockend.copy()
buf = self.buffer.get_text(start, blockend)
fd.write(buf)
fd.close()
self.buffer.set_modified(False)
ret = True
except:
dlg = gtk.MessageDialog(self, gtk.DIALOG_DESTROY_WITH_PARENT,
gtk.MESSAGE_ERROR, gtk.BUTTONS_OK,
"Error saving file " + self.fname)
resp = dlg.run()
dlg.hide()
return ret
def file_saveas(self, mi=None):
fname = dialogs.SaveFile('Save File As', self, self.dirname,
self.fname)
if not fname: return False
self.fname = fname
self.dirname = os.path.dirname(self.fname)
self.set_title(os.path.basename(fname))
self.new = 0
return self.file_save()
def file_exit(self, mi=None, event=None):
if self.chk_save(): return True
self.hide()
self.destroy()
if self.quit_cb: self.quit_cb(self)
return False
def edit_cut(self, mi):
self.buffer.cut_clipboard(self.clipboard, True)
return
def edit_copy(self, mi):
self.buffer.copy_clipboard(self.clipboard)
return
def edit_paste(self, mi):
self.buffer.paste_clipboard(self.clipboard, None, True)
return
def edit_clear(self, mi):
self.buffer.delete_selection(True, True)
return
def _search(self, search_string, iter = None):
if iter is None:
start = self.buffer.get_start_iter()
else:
start = iter
i = 0
if search_string:
self.search_string = search_string
res = start.forward_search(search_string, gtk.TEXT_SEARCH_TEXT_ONLY)
if res:
match_start, match_end = res
self.buffer.place_cursor(match_start)
self.buffer.select_range(match_start, match_end)
self.text.scroll_to_iter(match_start, 0.0)
self.last_search_iter = match_end
else:
self.search_string = None
self.last_search_iter = None
def edit_find(self, mi):
def dialog_response_callback(dialog, response_id):
if response_id == gtk.RESPONSE_CLOSE:
dialog.destroy()
return
self._search(search_text.get_text(), self.last_search_iter)
search_text = gtk.Entry()
s = self.buffer.get_selection_bounds()
if len(s) > 0:
search_text.set_text(self.buffer.get_slice(s[0], s[1]))
dialog = gtk.Dialog("Search", self,
gtk.DIALOG_DESTROY_WITH_PARENT,
(gtk.STOCK_FIND, RESPONSE_FORWARD,
gtk.STOCK_CLOSE, gtk.RESPONSE_CLOSE))
dialog.vbox.pack_end(search_text, True, True, 0)
dialog.connect("response", dialog_response_callback)
search_text.show()
search_text.grab_focus()
dialog.show_all()
response_id = dialog.run()
def edit_find_next(self, mi):
self._search(self.search_string, self.last_search_iter)
def help_about(self, mi):
dlg = gtk.MessageDialog(self, gtk.DIALOG_DESTROY_WITH_PARENT,
gtk.MESSAGE_INFO, gtk.BUTTONS_OK,
"Copyright (C)\n"
"1998 James Henstridge\n"
"2004 John Finlay\n"
"This program is covered by the GPL>=2")
dlg.run()
dlg.hide()
return
def edit(fname, mainwin=False):
if mainwin: quit_cb = lambda w: gtk.main_quit()
else: quit_cb = None
w = EditWindow(quit_cb=quit_cb)
w.load_file(fname)
w.show()
w.set_size_request(0,0)
if mainwin: gtk.main()
return
if __name__ == '__main__':
import sys
edit(sys.argv[-1], mainwin=True)
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