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search_toolbar.py

# coding: UTF-8
"""
Copyright (c) 2009 Marian Tietz
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:

1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
"""

import gtk

from .spell_entry import SpellEntry


00034 class SearchBar(gtk.Table):

      __gtype_name__ = "SearchBar"


      @property
      def textview_callback(self): return self._textview_callback
      @textview_callback.setter
      def textview_callback(self, callback):
            self._textview_callback = callback


      @property
      def textview(self):
            if self.textview_callback:
                  return self.textview_callback()
            return self._textview
      @textview.setter
      def textview(self, textview):
            if self.textview_callback:
                  self._textview = self.textview_callback()
            else:
                  self._textview = textview


      @property
      def search_term(self): return self.search_entry.get_text()
      @search_term.setter
      def search_term(self, text): self.search_entry.set_text(text)


      @property
      def autohide(self): return self._autohide
      @autohide.setter
      def autohide(self, value):
            self._autohide = value

            # connect/disconnect the focus-out-event for auto-hiding
            if value:
                  id = self.search_entry.connect(
                              "focus-out-event",
                              self.search_entry_focus_out_cb)
                  self._autohide_sig_id = id
            else:
                  if hasattr(self, "_autohide_sig_id"):
                        self.search_entry.disconnect(self._autohide_sig_id)


      @property
      def default_buttons(self): return self._default_buttons
      @default_buttons.setter
00085       def default_buttons(self, value):
            """ default button behaviour (buttons will be connected
                  to self.search_button_clicked_cb) if value == True
                  Otherwise the handler will be disconnected.
            """
            if value:
                  h1 = self.search_button.connect("clicked",
                              self.search_button_clicked_cb)

                  h2 = self.search_entry.connect("activate",
                              self.search_button_clicked_cb)
                  self._btn_handler_1 = h1
                  self._btn_handler_2 = h2

            else:
                  if hasattr(self, "_btn_handler_1"):
                        self.disconnect(self._btn_handler_1)
                        self.disconnect(self._btn_handler_2)


00105       def __init__(self, textview=None, textview_callback = None, autohide=True, default_buttons=True):
            """
                  textview = TextView to operate on
                  textview_callback = callback wich returns a TextView to operate on
                  autohide = hide on focus loss if enabled (True)
            """

            super(SearchBar,self).__init__(rows=1, columns=2)


            # arange widgets

            self.set_property("row-spacing", 1)

            self.search_entry = SpellEntry()

            self.attach(self.search_entry, 0, 1, 1, 2)
            self.child_set_property(self.search_entry, "y-options", gtk.SHRINK)

            self.search_button = gtk.ToolButton(stock_id = gtk.STOCK_FIND)
            self.attach(self.search_button, 1, 2, 1, 2)

            self.child_set_property(self.search_button,
                                                "y-options",
                                                gtk.SHRINK)
            self.child_set_property(self.search_button,
                                                "x-options",
                                                gtk.SHRINK)

            # setup own properties

            self.last_iter = None
            self.last_result = ""

            self.textview_callback = textview_callback
            self.textview = textview
            self.autohide = autohide

            # connect widget signals

            self.default_buttons = default_buttons


      def search_entry_focus_out_cb(self, entry, event):
            self.hide()


      def search_further(self):
            self.search_button_clicked_cb(None)


      def search_button_clicked_cb(self, button):

            if not self.search_term or not self.textview:
                  return

            if not self.last_iter or self.last_result != self.search_term:
                  self.last_iter = self.textview.get_buffer().get_start_iter()

            result = self.last_iter.forward_search(self.search_term,
                                                            gtk.TEXT_SEARCH_TEXT_ONLY)

            if not result:
                  return

            self.last_iter = result[1]
            self.last_result = self.textview.get_buffer().get_text(*result)

            self.textview.get_buffer().select_range(*result)

            # scroll the textview
            self.textview.scroll_to_iter(result[0], 0.0)


      def grab_focus(self):
            self.search_entry.grab_focus()



def test():
      win = gtk.Window()
      win.resize(400,400)

      vbox = gtk.VBox()
      tv = gtk.TextView()
      tv.get_buffer().set_text(
"""Oh hai!
Das ist ein Test!
Wer hier suchen will der findet das.
Auch doppelte und doppelte Woerter.
""")
      bar = SearchBar(textview_callback=lambda: tv, autohide=False)

      vbox.add(tv)
      vbox.add(bar)
      vbox.child_set_property(bar, "fill", False)
      vbox.child_set_property(bar, "expand", False)

      bar.grab_focus()

      win.add(vbox)
      win.connect("destroy", lambda *x: gtk.main_quit())

      win.show_all()

      gtk.main()


if __name__ == "__main__":
      test()


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